China Shenzhen Wofly Technology Co., Ltd. Company News

                                 How Does A Pressure Regulator Work?   There are a surprisingly large number of options on the market when it comes to choosing pressure regulators. But the truth is that every type of pressure regulator has a unique capability, and as a result, serves a unique purpose in every application. At Wofly, we want all of our clients to become more knowledgeable about the various sorts of regulators that are out there and how to choose the one that would meet their needs the best.     Different Pressure Regulator Types   Regulators for Pressure in Stainless Steel   A single stage pressure regulator known as pressure reducing is made to accept a greater inlet pressure (P1) and lower it to a lower controlled exit pressure (P2).   A back pressure regulator, sometimes known as a "overflow" regulator, is made to keep the inlet pressure (P1) constant while providing end users with a controlled and reliable line pressure.   A dual-stage pressure regulator called Cylinder Pressure is made to accept a higher inlet pressure (P1) and reduce it to a lower controlled exit pressure (P2). To provide a higher level of control accuracy as the gas cylinder depletes, these are frequently put on gas cylinders or bottles.     Specialty Regulators: These are regulators that use any of the aforementioned principles but are created for specific applications, such as miniature or compact versions for small spaces, dome-loaded designs for pneumatic pilot air operation, high pressure designs for up to 6,000PSIG control, high flow designs for up to 3.00 Cv, high temperature designs for up to +230°C, crossover manifolds for automatic cylinder bottle switching, and more.     How a Pressure Regulator Works     When media enters the device through the intake port of one of our popular R11 Series single stage pressure lowering regulators, it is held bubble-tight underneath the poppet in the seat area, as seen by the red area in the animation. The regulated release of outlet pressure is then achieved by winding down on the hand knob, which forces the diaphragm down onto the poppet (manually activating the diaphragm), as depicted by the blue area in the animation.

Composition of Ferrule Connector     AFK ferrule type pipe connector is composed of four parts: front ferrule, Back ferrule, ferrule nut and connector body. Advanced design and strict quality ensure that the pipe connector is completely sealed under correct installation.     Operating Principle of Ferrule Connector   When assembling the ferrule joint, the front ferrule is pushed into the joint body and ferrule to form the main seal, and then the ferrule is hinged inward to form a strong grip on the ferrule. The geometry of the rear ferrule is conducive to the generation of advanced engineering hinge clamp action, which can transform the axial movement into the radial extrusion of the ferrule, requiring only a small assembly torque during operation.   Features of AFK Ferrule Connector   1.Active load and double ferrule design 2.Easy and correct installation 3.The torque will not be transmitted to the ferrule during installation 4.Fully compatible   Features of Double Ferrules   The double ferrule separates the sealing function from the gripping function of the ferrule, and each ferrule is optimized for its corresponding function.   The front ferrule is used to form a seal:   1. Sealing with connector body 2. Seal the outer diameter of the ferrule.   When the nut is rotated, the rear ferrule will:   1. Push the front ferrule axially 2. Apply an effective clamping sleeve along the radial direction for gripping

The components of the diaphragm valve are as follows:   Valve cover   The valve cover serves as the top cover and is bolted to the valve body. It protects the compressor, valve stem, diaphragm and other non wetting parts of the diaphragm valve.   valve body   The valve body is a component directly connected with the pipe through which the fluid passes. The flow area in the valve body depends on the type of diaphragm valve.   The valve body and bonnet are made of solid, rigid and corrosion resistant materials. Diaphragm   The diaphragm is made of a highly elastic polymer disc that moves downward to contact the bottom of the valve body to restrict or obstruct the passage of fluid. If fluid flow is to be increased or the valve is to be fully opened, the diaphragm will rise. The fluid flows below the diaphragm. However, due to the material and structure of the diaphragm, this assembly limits the operating temperature and pressure of the valve. It must also be replaced regularly, because its mechanical properties will decrease during use.   The diaphragm isolates the non wetted parts (compressor, valve stem and actuator) from the flow medium. Therefore, solid and viscous fluids are unlikely to interfere with the diaphragm valve operating mechanism. This also protects non wetted parts from corrosion. On the contrary, the fluid in the pipeline will not be contaminated by the lubricant used to operate the valve.

As a national key industry, the semiconductor industry is booming. In the production process of semiconductor products, only by ensuring the stability of packaging quality, can the final yield and reliability of integrated circuits be guaranteed. In order to ensure the quality of packaging, in addition to the need for advanced production lines, both the R&D and production of chips and the packaging of parts are inseparable from a safe and reliable electronic special gas system. As a high-tech enterprise integrating technical consultation, overall planning, system design, selected equipment, prefabricated components, project site installation and construction, overall system testing, maintenance and other engineering technical services and supporting products, Wofei Technology can provide customers with: electronic special gas system, laboratory gas circuit system, industrial centralized gas supply system, bulk gas (liquid) system Gas application engineering of high purity gas and special process gas secondary piping system, chemical delivery system, pure water system, etc. Wofei Technology has excellent design and manufacturing experience in gas pipeline engineering valves, so its brand reputation, products and services have been highly praised.   Special gas system is used to ensure the safe use of special gas. Because the gas properties of special gases can meet the process needs of the industry, they are widely used in semiconductor, electronics, liquid crystal, photovoltaic and solar cell industries, and are crucial in the production process of the semiconductor industry. However, most of the special gases are dangerous gases, such as SiH4, NF3, etc. Therefore, ensuring the safe use of special gas is the significance of the existence of special gas system. The special gas system is generally composed of special gas equipment, special gas pipeline and terminal, and the special gas holder is the core equipment of the special gas system.   The full-automatic gas holder of Wofei Technology takes PLC as the control main body, cooperates with the touch screen for system display and setting, and matches with different panel designs to meet the needs of the solar energy and semiconductor industry. It also has the advantages of simple operation, high control software compatibility, high system stability, and full alarm recording function. The special gas holder can support network or wiring for signal output. The control system of the gas cylinder cabinet can output all the states, Including operation status alarm information, pressure value during gas supply, etc., which can be uploaded to the central control through the network or hardware. The gas holder control system (hydrogen control system) can be operated and controlled remotely by means of network to increase the convenience and safety of operation. The special gas system project is an important and dangerous project, and the special gas holder is the core equipment related to most of its functions. The special gas system project without the special gas holder is incomplete. In order to help customers solve the problems of convenient operation and safety in the production process that are difficult to merge, Wofei Technology has made comprehensive efforts from product quality to business planning, gradually broken through the difficulties, achieved aggregation of high-quality services, provided one-stop service solutions that meet different application scenarios and are suitable for differentiation, and boosted the growth of enterprise productivity. As a leader in the industry, Wofei Technology is well aware of the importance of enterprises to improve their scientific and technological strength, so it is not stingy about the cost of technology investment. For a long time, Wofei Technology has deeply understood the market demand, taken technological innovation as a strong support, cultivated the industry, constantly innovated and upgraded technology and process, and used high-quality products and innovative technology to adapt to the gradually developing market demand for new technologies. In the era of rapid development of the industry, higher product quality is an important factor for enterprises to enhance their core competitiveness. Wofei Technology also truly recognizes that quality is the cornerstone of enterprise survival and safety is the guarantee of company development. Wofei Technology is dedicated to professional, responsible and honest, and aspires to become a leading high-end intelligent gas transmission system integrator in the high-purity gas industry.

Pipeline transportation is one of the five major logistics transportation modes in modern times. It has the outstanding characteristics of large transportation volume, continuity, rapidity, economy, safety, reliability, stability, low investment, small land occupation, low cost, and automatic control. Since the 12th Five Year Plan, under the multiple backgrounds of global response to climate change, upgrading of China's air pollution control, and increasing pressure on energy security due to the rapid increase of China's external dependence on oil and natural gas, China has proposed to implement an energy revolution. Its main purpose is to reduce the growth rate of total fossil energy consumption and gradually increase the proportion of renewable energy. Among them, hydrogen has attracted much attention. Hydrogen energy, as a new energy with zero carbon and high efficiency, has increasingly prominent application value in the world energy transformation. According to the medium and long-term plan for the development of the hydrogen energy industry (2021-2035), China's hydrogen energy industry chain will make great progress, including the steady construction of the hydrogen energy storage and transportation system.       According to the transportation distance of hydrogen, the requirements of hydrogen use and the distribution of users, high-pressure hydrogen can be transported through hydrogen pipes and long tube trailers. For occasions with large transportation volume and long distance, pipeline transportation is a more efficient way. Wofei technology, which has focused on gas pipeline engineering for more than ten years, attaches importance to the technical mode of obtaining hydrogen sources through diverse scenarios, and has carried out project exploration in green hydrogen and other fields, and constantly made solid steps. In terms of the supply of hydrogen energy, the company has the advantages of high safety, high efficiency and high reliability. It can provide high-standard hydrogen storage and transportation systems. On the premise of ensuring safety, it ensures quality, quantity and supply. It is committed to building an industrial system for hydrogen energy preparation, purification, storage and transportation, and hydrogen energy supply, and to building an integrated hydrogen pipeline engineering system of "hydrogen storage, hydrogen transportation and hydrogenation".       During the implementation of the whole hydrogen pipeline system project, especially during the installation of key process systems and core precision equipment, Wofei technology has always maintained control over safety, quality, progress and cost, and continuously paid attention to pipeline connection, pipeline installation, pipeline spacing, pipeline welding, pipeline lightning protection, anti-corrosion, anti-static, pipeline venting and other safety issues, It plays an important role in the success of the project.     It can be predicted that with the development of hydrogen energy, the demand for hydrogen pipeline system is expected to increase significantly in the next few decades. According to the blue book on infrastructure development of China's hydrogen energy industry, by 2030, China's hydrogen pipeline will reach 3000 kilometers. Wofei technology pays high attention to this, makes layout in advance, and captures business opportunities. It will continue to give full play to its accumulated experience in the hydrogen energy industry, consolidate and improve its research strength and scientific research level in the field of pipeline transportation in the hydrogen energy and other new energy fields, and offer wisdom and suggestions for promoting China's energy transformation and green and low-carbon development.

In the process of designing a laboratory, gas pipelines are usually involved. General laboratory gas mainly consists of non combustible gas (nitrogen, carbon dioxide), inert gas, combustible gas, highly toxic gas and combustion supporting gas. Therefore, in the process of designing the laboratory, it is necessary to consider the installation of the gas circuit, design and select appropriate clean gas pipes and gas valves according to the site environment and the requirements of different gases, and meet the needs of the laboratory for gas safety, purity and cleanliness. However, with the rapid development of the industry, due to the lack of unified technical requirements on key contents and key standards of laboratory gas transmission and other equipment systems, problems such as a wide variety of equipment and facilities, and the mismatch between the performance of special modules and equipment pipeline valves have gradually become prominent. There is a temporary lack of unified and accurate guidance on scheme design, technology implementation, test evaluation and actual deployment, which has a great impact on later use and maintenance. As a high-tech enterprise engaged in gas application system engineering, Wofei technology has long provided a full range of laboratory gas pipeline gas supply systems, providing one-stop complete services from overall planning, professional design, material selection, professional installation, system delivery, technical consultation, etc., to meet the gas use requirements and safety of different experiments. Advanced equipment and hardware, pragmatic design, installation and maintenance teams, and rich project experience make the company highly trusted and recognized by partners in semiconductor, integrated circuit, flat panel display, optoelectronics, new materials, new energy, optical fiber, fine chemicals, biomedicine, various laboratories and other industries.   The gas pipeline system in the laboratory adopts the centralized gas supply equipment of the busbar. It has the functions of manual, semi-automatic and full-automatic switching for double bottles (multi bottles). It is equipped with a low-pressure alarm device to monitor the gas pressure in real time, monitor the concentration, alarm and exhaust air, so as to ensure the normal gas demand of customers and the safety of life and property. Moreover, through the gas supply control system, the gas in the cylinder can be fully used, the residual gas can be reduced, and the gas consumption cost can be reduced. In addition, Wofei technology cooperates with the construction party to design the scheme according to the laboratory environment. As we all know, the gas supply of pipelines and pipelines is intricate and complex. In order to avoid mistakes and leaks, the company's designers marked the intersection and control valve of each gas path on the drawings. Through field investigation, they carried out comprehensive and systematic investigation and analysis to provide detailed and reliable data for the gas path design. At the same time, in the construction of the gas station, the management mode of gas cylinder room is used to improve the safety of the gas station. Stainless steel control panel is used for gas source control, and stainless steel series valves, connectors and other products are used for pipeline connection in the transmission process. In the future, Wofei technology will continue to promote the large-scale development of the laboratory gas circuit industry based on its own technology and practical experience, cooperate with ecological partners, provide technical support for the implementation of the gas transportation system in various industries, and help the healthy development of industrial safety.

  Single stage and double stage gas pressure regulating valve When using gas product cylinders, there are many useful devices to ensure that the process is as safe as possible. If you are trying to reduce the cylinder pressure to the appropriate working level of special instruments and operating equipment, the pressure reducing and regulating valve is the safest way. There are two types of regulators used for such tasks - single-stage and double stage. Wofei technology will explain the details of single-stage and two-stage gas regulators for you.   Single stage voltage regulator All pressure regulating valves are designed to more safely reduce the cylinder pressure and deliver it to the use level of operating equipment and instruments. When a single-stage gas regulator is in use, you can reduce the cylinder pressure to the delivery and outlet pressure in one step. This type of regulator tends to change slightly with the change of delivery pressure as the cylinder pressure decreases during use. Because of this special detail, if a constant outlet pressure is not required, it is better to use a single-stage regulator. If you have someone else to monitor and readjust the pressure, or on equipment that allows stable inlet pressure, you can also use one.     Two stage regulator The two-stage regulator is designed to combine two regulators into one. The first stage can reduce the inlet pressure to an intermediate setting and is not adjustable. However, the second stage is adjustable and reduces the intermediate pressure to the final delivery pressure. One of the main advantages of using a two-stage regulator is that it can maintain a stable delivery pressure, thus avoiding the need for regular adjustment. This is possible because there is only a small change in the inlet pressure in the second stage. If you need gas supply, analytical instruments and other equipment that need to continuously deliver pressure, you will need a two-stage regulator.   Gas regulator safety Another key information about single-stage and two-stage gas regulators is how to use them safely. Some of these elements are basic, such as ensuring that safety glasses are worn when installing and operating such gas processing equipment. If the regulator is pressurized or running, do not attempt to reposition or remove the regulator. There are concerns about contamination and dangerous mixing, which is why you should assign each regulator to only one gas device. Marking which regulator is used with which gas is one way to ensure this. You should never use a gas regulator as a stop valve. Ensure that the gas flow is always closed at the actual source after use.  

The semiconductor industry is a huge global industry, which continues to grow every year, which means that the demand for high-purity gases will increase accordingly. Having a reliable supply of high-purity gas is essential for semiconductor manufacturing, especially in advanced technologies such as smart phones and autonomous vehicle. The process of producing integrated circuits is very complex, requiring more than 30 different gases at all stages, which makes the range of gases used one of the most widely used in any industry. Gas is an important part of semiconductor manufacturing, because it can produce chemical reactions required to shape the electrical characteristics of semiconductors. Due to its complexity, the gas used at each stage of the manufacturing process needs to be accurate and accurate to correctly configure the semiconductor. With the continuous development of the semiconductor industry, the gases used in the process are also developing. Some of the core gases used include nitrogen, oxygen, argon and hydrogen. We will discuss their roles in the manufacturing process in depth. Nitrogen Due to its availability and inertness, nitrogen is the core gas used in each step of the semiconductor manufacturing process, but its main use is in the purging stage. At this stage, nitrogen is used to flush each channel and pipe network to remove any oxygen in the machines and tools, so as to protect them from other gases that may contaminate the process. In addition, most semiconductor factories are equipped with nitrogen generators on site due to the large use of nitrogen in the whole process. More importantly, with the production of high-tech smartphones and other technologies, it is imperative to keep the cost low while trying to meet the high demand. You can say that nitrogen keeps tools, spaces and pipes away from any potential moisture, chemical contaminants and particles. It is an essential gas, which is used throughout the process from the beginning to the end, which is no wonder why they install generators on site.   Oxygen As you know, oxygen is an oxidant, so it is essential to produce a deposition reaction. It is used to grow silicon oxide layers for various elements in the process, such as diffusion masks. When oxygen is used for semiconductor manufacturing, the gas must be ultra-high purity to prevent any impurity from affecting the production and performance of the device. During the etching process, oxygen is also used to remove any additional material waste generated. It can also be used to make any etching pattern permanent. Finally, oxygen also helps to neutralize reactive gases through oxidation reactions that may change product quality. Therefore, like nitrogen, oxygen also helps to ensure that no pollution occurs.   Argon Argon is mainly used for the deposition and etching process in the ultraviolet lithography laser, and is used to make the smallest pattern on the semiconductor chip. During the manufacturing of the required silicon wafer, argon gas is used to protect the silicon crystal formed on the wafer from any potential reaction with oxygen and nitrogen during the high-temperature growth process. Because argon is also a very inert gas, it is used to provide a non reactive environment for metal sputtering deposition. Sometimes the reactivity of nitrogen is too strong, which will lead to the formation of metal nitrides. In addition, liquid argon is used with tools to clean the smallest and most fragile chips.   Hydrogen The use of hydrogen in semiconductor manufacturing may increase due to higher demand. Especially in the photolithography stage, hydrogen is used to react with chemical tin to produce tin hydride. Tin hydride is required so as not to accumulate on expensive optical elements. It is used for epitaxial deposition of silicon and silicon germanium in the deposition process, and also for surface preparation by annealing process. Hydrogen is used to create a new oxide layer to modify the existing thin film. This process occurs in high-pressure and high-temperature environments, which means that the control of flow rate, temperature and pressure is very important. In addition, hydrogen is also used in the doping stage to help control decomposition, because the gas used in this process is highly toxic. So many that they need to be stored in a device that can prevent leakage. Diborane is also a chemical used in the doping process, but due to thermal instability, it will slowly decompose, so hydrogen is needed to help stabilize it.   Semiconductors in daily life Semiconductors are used in all kinds of daily equipment, such as computers, smartphones, televisions, and also in advanced technologies, such as medical equipment, military systems and many other applications. They are part of our daily life and we don't notice them because they exist in the devices we use every day. Without semiconductors, we will not be able to do many things. With the development of semiconductor technology, they will become more reliable, intelligent and compact. From communication, transportation and entertainment, these are only a small part of what semiconductors have done for us. They will power future technology and innovation, enabling us to do things we have never imagined.

Hook up enables the machine to achieve the desired function by connecting to transmit utilities. Hook up is to connect the utilities (such as water, electricity, gas, chemicals, etc.) provided by the factory to the machine and its accessories through the reserved utilities connection point (port or stick) through pipelines cable. These utilities are used by the machine to meet the process requirements it is paid. After the machine is used, the recyclable water or waste (such as waste water, waste gas, etc.) generated by the machine is connected to the reserved contact of the system through the pipeline, and then transmitted to the plant recovery system or waste gas treatment system. The hookup project mainly includes: CAD, move in, core drill, seismic, vacuum, gas, chemical D.I, PCW, CW, express, electric, drain   GAS HOOK-UP Basic understanding of professional knowledge In semiconductor plants, the so-called hook up of gas pipeline is called "sp1hook up" in terms of buckgas (general gases such as CDA, GN2, pN2, PO2, Phe, par, H2, etc.), and the takeoff point from the outlet point of the gas storage tank of the gas supply source to the sub mainpiping through the mainpiping is called "sp1hook up", which is from the takeoff outlet point to the inlet point of the machine (tool) or equipment, Called secondary configuration (sp2hook up). For specialtygas (special gas such as corrosive, toxic, flammable, heating gas, etc.), its gas supply source is gascabinet. From the g/c outlet point to the primary inlet point of VMB (valve main box.) or VMP (valve main panel) is called sp1hook up, and from the secondary outlet point of VMB or VMP stick to the machine inlet point is called sp2 hook.

  The main components and functions of the binary mixture proportioner equipment of the fully automatic standard gas preparation device of the diversified intelligent gas distribution equipment.     1. Gas flow meter: It is the control mechanism of this system, and its action is directly controlled by the executive structure. It is the key component of mixing and proportioning. 2. Pressure stabilization and pressure reduction control valve: control pressure and flow, mixture pressure main pressure stabilization components。 3. Analyzer: It is the testing mechanism of this equipment and displays the percentage content in the proportioning gas. (External) 4. Switching valve: control the gas on/off and stop the operation of the equipment. 5. pressure sensor: detect the pressure of the gas mixture, and with the valve to adjust the pressure, the upper and lower pressure limit parameters to confirm 6. Mixing tank: Mixing tank of mixed gas, mix each way of gas evenly. 7. Touch screen: display real-time process, gas distribution parameters, alarm parameters, etc. 8. Electrical combination: control and operate the equipment, visually display the work flow and working status. Multi-intelligent gas distribution equipment fully automatic standard gas preparation device 2 elements package mixed gas distribution equipment composition and system design Multi-intelligent gas distribution equipment fully automatic standard gas preparation device 2 elements encapsulated mixed gas distribution equipment gas supply unit       The raw material gas is provided in the form of high-pressure cylinders, and the gas is sent to the corresponding entrance after decompression. When the cylinder gas is less than the pressure range required for gas distribution, sound and light warning will be issued, and the combustible gas pipeline is equipped with a one-way valve to avoid hazards caused by other gases under pressure, so as to ensure the stable operation of proportioning equipment and constant pressure to a large extent. The above is the working principle and technical characteristics of the gas mixer introduced by Wolfly. We hope that we can provide you with a reference.     深圳沃飞科技有限公司是一家专 门从事气体应用系统工程：电子特气系统、实验室气路系统、工业集中供气系统、大宗气体（液体）系统、高纯气体及特种工艺气体二次配管系统、化学品输送系统、纯水系统提供从技术咨询、整体规划、系统设计、选定设备、预制组件、项目现场安装建设、整体系统检测、维护保养等全套工程技术服务和配套产品于一体的高新技术企业。 工程项目覆盖半导体、集成电路、平板显示、光电、汽车、新能源、纳 米、光纤、微电子、石油化工、生物医药、各类实验室、研究所、标准检测等高科技行业；为客户提供高纯介质输送系统全套解决方案；逐步成为行业先进的整体系统供应商。 公司拥有奥飞克（AFK®）品牌，产品畅销于国内及海外26个国家，并代理德国WITT(威特)、美国布劳宁、Atlascopco、韩国MKP质量流量计等品牌。沃飞科技主要销售的产品有工业气体减压器、半导体减压器、调压阀、隔膜阀、波纹管阀、不锈钢阀门、卡套接头、VCR接头、不锈钢管、高压软管、阻火器、止回阀、过滤器、仪器仪表、气体探测器、分析仪器、纯化器、气体配比器、低温阀类、供气汇流排、BSGS、GC、GR、VDB/P、VMB/P、SCRUBBER等各种气体相关设备和配件；为了追求更好品质并给客户提供更高更安 全的技术，严格按照ISO9001标准执行各项管理。气体报警器：http://www.szwofei.com

  Automatic gas mixing and proportioning device hydrogen-argon gas mixer oxygen-argon mixing and proportioning cabinet hydrogen-nitrogen mixing equipment using imported mass flow controller controller gas volume flow for binary mixing and proportioning, while equipped with hydrogen analyzer online monitoring of the single or multi-gas concentration of mixed gases to ensure the proportion of the ratio, the proportion of mixed gases in the hydrogen analyzer analysis of the ZUI range can be set at will, simple, convenient and intuitive adjustment.   Automatic gas mixing proportioner hydrogen-argon gas mixer oxygen-argon mixing proportioner hydrogen-nitrogen gas mixing equipment welding gas mixture, gas shielded welding, is a new welding process developed on the basis of the widespread use of manual arc welding and submerged arc automatic welding. At present, the welding shielding gas mixture commonly used in industry can be roughly divided into three categories: binary mixture, ternary mixture and quadratic mixture. Binary mixtures that are often used are Ar-He, Ar-H2, Ar-O2, Ar-CO2, CO2, O2, N2, H2, etc.; ternary mixtures are Ar-He-CO2, Ar-He-N2, N2, Ar-He-O2, Ar-O2, CO, etc.; quaternary mixtures are used less and are mainly formulated from Ar, He, H2, O2, N2, CO2, etc. The ratio of the components of each type of gas mixture can be changed and combined, mainly by the welding process, welding material welding model and other factors to decide. Generally speaking, the higher the requirements for the quality of the welding seam, the higher the requirements for the purity of the unit gases used to prepare the gas mixture. In Europe and America, the purity of Ar, H2, N2 and other gases used for gas mixture is 99.999%, He is 99.996%, CO2 is 99.99%, and moisture is usually regarded as harmful substance, and H20＜10mg/m3 is required. fully automatic gas mixture distribution device is widely used in galvanizing line industry, float glass and other industries that need large volume of gas mixture. Automatic gas mixing and proportioner hydrogen-argon gas mixer oxygen-argon mixing and proportioning cabinet hydrogen-nitrogen mixing equipment control mode. It adopts famous brand programmer and touch screen control, which can display the information of proportioning process, proportioning ratio, working pressure and alarm parameters in real time, so that the operation becomes easy and clear. The control adopts the program controller and mass flow controller to do communication control, which ensures the accuracy of the proportioning, and the equipment is equipped with manu     Automatic gas mixing and proportioner hydrogen-argon gas mixer oxygen-argon mixing and proportioning cabinet hydrogen-nitrogen mixing equipment equipment main components and functions.   1.Mass flow controller:it is the control mechanism of this system, and its action is directly controlled by the actuator. It is the key component of hydrogen and nitrogen gas mixing and proportioning.   2.Hydrogen divider: it is the detection mechanism of this equipment (small flow meter is the flow controller of hydrogen divider), which displays the percentage content of hydrogen in the proportioning gas and converts the percentage content of hydrogen into 4-20mA current signal.   3.Intelligent display regulator (Allegra): it is the controller of the equipment, which compares the current signal of the hydrogen divider with the set value, and the calculation result is converted into the 4-20mA current signal needed by the actuator. The intelligent display regulator has a mixture gas concentration alarm output.   4.Mixing tank (304):mixing and proportioning hydrogen and nitrogen and doing small buffer role.   5. Proportional flow meter:the use of mixed proportional gas real-time flow rate is displayed. 6.Pressure controller:there is an alarm output for nitrogen pressure, and close the hydrogen import, to ensure that the working point hydrogen concentration will not exceed the standard. Automatic gas mixing proportioner hydrogen-argon gas mixer oxygen-argon mixing proportioning cabinet hydrogen-nitrogen mixing equipment process flow.   Process steps and control methods 1.Adopt imported mass flow controller to control the volume flow of gas for mixing and proportioning of binary or ternary gases, to ensure the reliability of equipment operation and proportioning stability while working with high precision. (Ternary gas with the corresponding standard gas to do the same proportion of calibration, the actual measurement of gas display data as a basis for comparison data detection or online monitoring of the online chromatograph fine-tuning mass flow meter equipment parameters, so that the most / final mixing ratio within 0.1%, the specific data to the resolution of the chromatograph or gas analyzer as a benchmark) 2. Control mode: PLC of famous brand and touch screen control are adopted to display the information of proportioning process, proportioning ratio, working pressure and alarm parameters in real time, so that the operation becomes easy and clear. The control adopts PLC and mass flow controller to do communication control to ensure the accuracy of the proportioning, and the equipment is equipped with manual operation display instrument, which can manually adjust the proportioning ratio. The above is the introduction of Wofei Technology about how to use the gas mixture proportioning cabinet correctly. I hope it can provide reference for you.   深圳沃飞科技有限公司是一家专门从事气体应用系统工程：电子特气系统、实验室气路系统、工业集中供气系统、大宗气体（液体）系统、高纯气体及特种工艺气体二次配管系统、化学品输送系统、纯水系统提供从技术咨询、整体规划、系统设计、选定设备、预制组件、项目现场安装建设、整体系统检测、维护保养等全套工程技术服务和配套产品于一体的高新技术企业。 工程项目覆盖半导体、集成电路、平板显示、光电、汽车、新能源、纳 米、光纤、微电子、石油化工、生物医药、各类实验室、研究所、标准检测等高科技行业；为客户提供高纯介质输送系统全套解决方案；逐步成为行业先进的整体系统供应商。 公司拥有奥飞克（AFK®）品牌，产品畅销于国内及海外26个国家，并代理德国WITT(威特)、美国布劳宁、Atlascopco、韩国MKP质量流量计等品牌。沃飞科技主要销售的产品有工业气体减压器、半导体减压器、调压阀、隔膜阀、波纹管阀、不锈钢阀门、卡套接头、VCR接头、不锈钢管、高压软管、阻火器、止回阀、过滤器、仪器仪表、气体探测器、分析仪器、纯化器、气体配比器、低温阀类、供气汇流排、BSGS、GC、GR、VDB/P、VMB/P、SCRUBBER等各种气体相关设备和配件；为了追求更好品质并给客户提供更高更安 全的技术，严格按照ISO9001标准执行各项管理。气体配比器：http://www.szwofei.com

  High-purity gas piping technology is an important part of high-purity gas supply system, which is the key technology to deliver the required high-purity gas to the point of use and still maintain the qualified quality; High-purity gas piping technology includes the correct design of the system, the selection of fittings and accessories, construction and installation, and testing. In recent years, the increasingly strict requirements on the purity and impurity content of high-purity gases in the production of microelectronics products represented by large-scale integrated circuits have made the piping technology of high-purity gases increasingly concerned and emphasized. The following is a brief overview of high-purity gas piping from material selection of construction, as well as acceptance and daily management.   Types of common gases Classification of common gases in the electronics industry： Common gases（Bulk gas）: hydrogen (H2), nitrogen (N2), oxygen (O2), argon (A2), etc. Specialty gases are SiH4 ,PH3 ,B2H6 ,A8H3 ,CL ,HCL ,CF4 ,NH3, POCL3, SIH2CL2 SIHCL3 ,NH3, BCL3 ,SIF4 ,CLF3 ,CO ,C2F6, N2O ,F2, HF ,HBR SF6 ...... etc. The types of special gases can generally be classified as corrosive gas, toxic gas, flammable gas, combustible gas, inert gas, etc. The commonly used semiconductor gases are generally classified as follows. (i) Corrosive / toxic gas: HCl , BF3, WF6, HBr , SiH2Cl2, NH3, PH3, Cl2, BCl3 ...etc. (ii) Flammability gas: H2, CH4, SiH4, PH3, AsH3, SiH2Cl2, B2H6, CH2F2, CH3F, CO...etc. (iii) combustibility gas: O2, Cl2, N2O, NF3 ... etc. (iv) Inert gas: N2, CF4, C2F6, C4F8, SF6, CO2, Ne, Kr, He...etc. Many semiconductor gases are harmful to human body. In particular, some of these gases, such as SiH4 spontaneous combustion, as long as a leak will react violently with the oxygen in the air and begin to burn; and AsH3 highly toxic, any slight leakage may cause the risk of human life, it is because of these obvious dangers, so the requirements for the safety of the system design is particularly high.   Application scope of gases As an important basic raw material of modern industry, gas products are widely used, and a large number of common gases or special gases are used in metallurgy, steel, petroleum, chemical industry, machinery, electronics, glass, ceramics, building materials, construction, food processing, medicine and medical sectors. The application of gas has an important impact on the high technology of these fields in particular, and is its indispensable raw material gas or process gas. Only with the needs and promotion of various new industrial sectors and modern science and technology, the gas industry products can be developed by leaps and bounds in terms of variety, quality and quantity. Gas application in microelectronics and semiconductor industry The use of gas has always played an important role in the semiconductor process, especially the semiconductor process has been widely used in various industries, from the traditional ULSI, TFT-LCD to the current micro-electro-mechanical (MEMS) industry, all of which use the so-called semiconductor process as the manufacturing process of products. The purity of the gas has a decisive impact on the performance of components and product yields, and the safety of the gas supply is related to the health of personnel and the safety of plant operations. The significance of high-purity piping in high-purity gas transport In the process of stainless steel melting and making material, about 200g of gas can be absorbed per ton. After the processing of stainless steel, not only its surface sticky with various contaminants, but also in its metal lattice also absorbed a certain amount of gas. When there is airflow through the pipeline, the metal absorbs this part of the gas will re-enter the airflow, polluting the pure gas. When the airflow in the tube is discontinuous flow, the tube adsorbs the gas under pressure, and when the airflow stops passing, the gas adsorbed by the tube forms a pressure drop to resolve, and the resolved gas also enters the pure gas in the   General concept of clean technology for transmission and distribution pipelines Highly pure and clean gas body transmission with piping means that there are certain requirements or controls for three aspects of the gas to be transported. Gas purity: The content of impurity atmosphere in the gGas purity: The content of impurity atmosphere in the gas, usually expressed as a percentage of gas purity, such as 99.9999%, also expressed as the volume ratio of impurity atmosphere content ppm, ppb, ppt. Dryness: the amount of trace moisture in the gas, or the amount called wetness, usually expressed in terms of dew point, such as atmospheric pressure dew point -70. C. Cleanliness: the number of contaminant particles contained in the gas, particle size of µm, how many particles/M3 to express, for compressed air, usually also expressed in terms of how many mg/m3 of unavoidable solid residues, which covers the oil content. Pollutant size classification: pollutant particles, mainly refers to pipeline scouring, wear, corrosion generated by metal particles, atmospheric soot particles, as well as microorganisms, phages and moisture-containing gas condensation droplets, etc., according to the size of its particle size is divided into a) Large particles - particle size above 5μm b) Particle - material diameter between 0.1μm-5μm c) Ultra-micro particles - particle size less than 0.1μm. In order to enhance the application of this technology, to be able to perceptual understanding of particle size and μm units, a set of specific particle status is provided for reference   The following is a comparison of specific particles Name /Particle size (µm) Name /Particle size (µm) Name/ Particle size µm Virus 0.003-0.0 Aerosol 0.03-1 Aerosolized microdroplet 1-12 Nuclear fuel 0.01-0.1 Paint 0.1-6 Fly ash 1-200 Carbon black 0.01-0.3 Milk powder 0.1-10 Pesticide 5-10 Resin 0.01-1 Bacteria 0.3-30 Cement dust 5-100 Cigarette smoke 0.01-1 Sand dust 0.5-5 Pollen 10-15 Silicone 0.02-0.1 Pesticide 0.5-10 Human hair 50-120 Crystallized salt 0.03-0.5 Concentrated sulfur dust 1-11 Sea sand 100-1200