China Shenzhen Wofly Technology Co., Ltd. Company News

  1 Domestic and foreign development present situation Pipeline CO2 transport has been applied abroad, with about 6,000 km of CO2 pipelines in the world, with a total capacity of more than 150 Mt/a. Most of the CO2 pipelines are located in North America, while others are in Canada, Norway and Turkey. The majority of long-distance, large-scale CO2 pipelines abroad use supercritical transport technology. The development of CO2 pipeline transmission technology in China is relatively late, and there is no mature long-distance transmission pipeline yet. These pipelines are internal oilfield gathering and transmission pipelines, and are not considered CO2 pipelines in the real sense.       2 Key technologies for CO2 transport pipeline design 2.1 Requirements for gas source components To control the gas components entering the transmission pipeline, the following factors are mainly considered: (1) to meet the demand for gas quality in the target market, such as for EOR oil recovery, the main requirement is to meet the requirements of mixed-phase oil drive. ②To meet the requirements of safe pipeline transmission, mainly to control the content of toxic gases such as H2S and corrosive gases, in addition to strictly controlling the water dew point to ensure that no free water precipitates during the pipeline transmission. (3) Comply with national and local laws and regulations on environmental protection; (4) On the basis of meeting the first three requirements, reduce the cost of gas treatment upstream as much as possible.     2.2 Selection and control of transport phase state In order to ensure the safety and reduce the operating cost of CO2 pipeline, it is necessary to control the pipeline medium to maintain a stable phase state during the transmission process. In order to ensure the safety and reduce the operating cost of CO2 pipelines, it is necessary to first control the pipeline medium to maintain a stable phase state during the transmission process, so the gas phase transmission or supercritical state transmission is generally chosen. If gas-phase transport is used, the pressure should not exceed 4.8 MPa to avoid pressure variations between 4.8 and 8.8 MPa and the formation of two-phase flow. Obviously, for large volume and long distance CO2 pipelines, it is more advantageous to use supercritical transmission considering engineering investment and operation cost. 2.3 Routing and area hierarchy In the selection of CO2 pipeline routing, in addition to conforming to local government planning, avoiding environmentally sensitive points, cultural relic protection zones, geological disaster areas, overlapping mine areas and other areas, we should also focus on the relative location of the pipeline and the surrounding villages, towns, industrial and mining enterprises, key animal protection zones, including wind direction, terrain, ventilation, etc. While selecting the routing, we should analyze the high consequence areas of the pipeline, and at the same time take corresponding protection and early warning measures. When choosing the route, it is recommended to use satellite remote sensing data for terrain inundation analysis, so as to determine the high consequence area of the pipeline. 2.4 Principles of valve chamber design In order to control the amount of leakage when the pipeline rupture accident occurs and to facilitate pipeline maintenance, a line cut-off valve chamber is generally set at some distance on the pipeline. The valve chamber spacing will lead to a large amount of pipe storage between the valve chamber and a large amo   2.6 Special requirements for equipment and materials (1) Sealing performance of equipment and valves. (2) Lubricant. (3) Pipe stop cracking performance.  

  1. Laboratory gas types ed in laboratories with precision instruments, experimental gases (chlorine gas) and gas, compressed air, etc. used in the experimental gas (chlorine gas) and auxiliary experiments in the laboratory, compressed air, etc. High -pure gases are mainly gas (nitrogen, carbon dioxide), inert gas (grillets, sorbe), flammable gas (hydrogen, acetylene), and help gas (oxygen), etc. Laboratory gas is mainly provided by gas cylinders. Individual gases can be provided by gas generators. Commonly used bonds to distinguish and sign: oxygen cylinders (sky blue black), hydrogen cylinders (dark green red words), nitrogen cylinders (black yellow characters), compressed air cylinders (black white), acetylene bottle (white red) carbon dioxide bottle ( Green and white), cylinders (gray green), cylinder cylinders (brown).       2. Laboratory gas supply method The laboratory gas supply system can be divided into decentralized gas supply and concentrated gas supply according to its supply method 2.1.Diversified gas supply is to place gas cylinders or gas generators in each instrument analysis room, close to the instrumental gas point, convenient use, saving gas, and less investment; Use explosion -proof gas cylinder cabinets, and to be alarm and exhaust function. Alarm is divided into combustible gas alarm and non -combustible gas alarm. The gas cylinder cabinet should have a gas cylinder safety prompt sign, and the gas cylinder safety fixed device. 2.2. Concentrated gas supply is a variety of gas cylinders that need to be used by various experimental analysis instruments, all of which are placed in independent gas cylinders outside the laboratory for centralized management. Various types of gases are transported in the form of pipelines between gas cylinders and according to different experiments according to different experiments. The gas use of the instrument is transported to different experimental instruments in each laboratory. The entire system includes the pressure control part of the gas source set pressure (convergence row), the gas pipeline (EP -level stainless steel pipe), the secondary pressure regulating diversion part (function column), and the terminal part (connector, cut -off valve) connected to the instrument. The entire system requires good gas tightness, high cleanliness, durability, and safety and reliability, which can meet the requirements of experimental instruments for continuous use of various types of gases. Gas pressure and traffic are adjusted throughout the entire process to meet the requirements of different experimental conditions. Concentrated gas supply can realize the centralized management of gas sources, stay away from the laboratory to ensure the safety of the experiments; however, the gas supply pipeline leads to waste gas, and the gas source will be opened or closed to the gas cylinder, which is no   3. Safety specifications between gas cylinders and gas cylinders 3.1. The gas cylinder should be dedicated to the bottle, and other types of gas cannot be modified at will. 3.2. The gas cylinder room is strictly forbidden to be close to fire sources, heat sources, and corrosive environments. 3.3. The gas cylinder room is not allowed to use explosion -proof switches and lamps, and bright fires are prohibited around. 3.4. The gas cylinder room should have ventilation equipment to keep it cool. At the top of the gas cylinder room, there should be leakage holes to prevent the gathering of hydrogen. 3.5. The empty bottle and the solid bottle are placed. The flammable and explosive cylinder of the gas cylinder should be isolated from the gas cylinder. 3.6. The attachments such as the bottle valve, the receiving screw and the pressure decompression valve are intact, and the dangerous situations such as leakage, sliding wire, and acupuncture pins are generally not mixed. 3.7. When the gas cylinder must be stored upright when storing and use, when the working location is not fixed and moving frequently, it should be fixed on a special hand -to -hand car to prevent dumping. It is strictly forbidden to use it. 3.8. The gas cylinder is strictly prohibited from the fire source, thermal source and electrical equipment, and the distance from the light fire is not less than 10m. When used at the same time, the oxygen cylinder and acetylene gas cylinder cannot be placed together 3.9. The empty bottle after use should be moved to the empty bottle storage area, and the label of the empty bottle should be prohibited. 3.10. The gas in the gas cylinder should not be used, and a certain amount of residual pressure must be maintained. 3.11. The gas cylinder must be tested on a regular basis. The test cycle of the use of oxygen cylinders and acetylene gas cylinders must not be used. The testing cycle of liquefied petroleum cylinders is 3 years, and the testing cycle of the cylinder and nitrogen cylinder is 5 years. 3.12. The cylinder sho   4. Gas pipeline design specification 4.1. Yiming, hydrogen, oxygen and gas pipelines, and various gas pipelines in the laboratory. When the pipeline shaft and pipeline technology layer is equipped with hydrogen, oxygen, and gas pipelines, there should be ventilation measures of 1 ~ 3 times/h. 4.2. The general laboratory designed according to the standard unit combination, various gas pipelines should also be designed according to the standard unit combination. 4.3. The gas pipes of the laboratory wall or floor should be laid in the embedded sleeve, and the pipe section in the sleeve should not have welds. Non -combustible materials are used between the pipeline and the sleeve. 4.4. The end of the hydrogen and oxygen pipelines should be set up on the highest point. The empty tube should be above 2m above the layer and should be located in the lightning protection zone. Sample points and blowouts should also be provided on the hydrogen pipeline. The position of the empty pipe, sampling port and blowing mouth should meet the requirements of gas blowing and replacement in the pipeline. 4.5. Hydrogen and oxygen pipelines should have a ground -to -electrical grounding device. The grounding and cross -connection measures with grounding requirements shall be implemented in accordance with relevant national regulations.   5. Pipeline layout requirements 5.1. The pipelines that transport dry gases should be installed horizontally. The pipelines that transport the humid gas should be not less than 0.3%of the slope, and the slope is to the condenser liquid collector. 5.2. Oxygen pipelines and other gas pipelines can be laid in the same frame, and the distance between the distance must not be less than 0.25m. Oxygen pipeline should be above other gas pipelines except the oxygen pipeline. 5.3. When the hydrogen pipeline and its abundant gas pipeline are laid in parallel, the spacing should not be less than 0.50m; when the intersection is laid, the spacing should not be less than 0.25m. When laying layers, the hydrogen pipeline should be above. Indoor hydrogen pipes should not be laid in the ditch or buried directly. Do not pass a room that is not applicable. 5.4. Gas pipes must not be laid with cables and store lines. 5.5.Gas pipes should be seamless steel pipes. Gas with a purity of gas is greater than or equal to 99.99%of the gas pipelines, stainless steel pipes, copper pipes or seamless steel pipes. 5.6. Gas pipes should be seamless steel pipes. Gas with a purity of gas is greater than or equal to 99.99%of the gas pipelines, stainless steel pipes, copper pipes or seamless steel pipes. 5.7. The connection section of the pipeline and the equipment should be metal pipes. If it is a non -metal hose, polytrafluoroethylene tubes and polyvinyl chloride tubes should be adopted, and latex tubes shall not be used. 5.8. The connection section of the pipeline and the equipment should be metal pipes. If it is a non -metal hose, polytrafluoroethylene tubes and polyvinyl chloride tubes should be adopted, and latex tubes shall not be used. 5.9. Materials of valves and attachments: Copper materials must not be used for hydrogen and gas pipelines. Other gas pipelines can be made of copper, carbon steel and forged cast iron. The attachments and instruments used in hydrogen and oxygen pipelines must be a special product of the medium, which must not b

  1. Corrosion 1.1 Wet corrosion For example, HCL and CL2 can easily corrode the cylinder when there is water. The introduction of water may be derived from the customer's use. It is not closed by the valve. It may also have similar corrosion in NH3, SO2, and H2S. Even dry hydrogen chloride and chlorine gas cannot be stored in aluminum alloy gas cylinders at high concentrations. 1.2 Stress corrosion When Co, CO2, and H2O coexist, carbon steel cylinders are easily corroded. Therefore, when preparing standard gases containing CO and CO2, the gas cylinder must be dried, and the raw material gas must also use high purity gases or no moisture -free gas.       2. Dangerous compounds 2.1 Acetylene and copper -containing copper alloy reaction to generate metal organic compounds. 2.2 Single halogen -based hydrocarbons CH3CL, C2H5CL, CH3BR, etc. cannot be installed in aluminum alloy cylinders. They will slowly form a metal organic halide with aluminum and explode when they encounter water. If the gas cylinder contains moisture, the prepared standard gas can be detected in the standard gas. 3. The explosion reaction causes the explosion reaction due to the incompatibility of the gas and valve sealing materials or pipeline materials. If the oxidized gases cannot choose a valve with combustible sealing materials. This is easy to be ignored when standard gas preparation. This includes how to calculate the oxidation of standard gas    

  1.Conditions and Preparations for Testing Pressur 1.1 The construction of the pipeline system is completed, and it meets the design requirements and specifications. 1.2 The welding work is completed after the mixing rack and the pipe rack are installed. The ray detection has fully reached the design specifications and passed the inspection. The welds and other inspection areas that should be tested are not painted and insulated. 1.3 The test pressure gauge has been verified, and the accuracy is 1.5 levels. The full -scale value of the table should be 1.5 to 2 times the measured to the maximum pressure. 1.4 Before the test, you cannot participate in the test system, equipment and accessories, and add a white paint label with a white paint label with a blind plate. 1.5 Water should be used for cleaning water, and the content of chloride in the water must not exceed 25 × 10-6 (25ppm). 1.6 Temporary pipeline reinforcement for tests should be confirmed and reliable after inspection. 1.7 Check whether all valves on the pipeline are open, whether the pads are added, and stop the valve core of the valve core, and then reset until it is blown.   2.Process Pipeline Test Pressure Process 2.1. Pipeline test pressure is 1.5 times the design pressure. 2.2. When the pipeline and equipment are tested as a system, the test pressure of the pipeline is equal to or less than the test pressure of the device. Essence 2.3. When water injection of the system, the air should be exhausted. The air emission point should be at the highest point of the pipeline and add the exhaust valve. 2.4. Pipelines with large positions should be measured into the test pressure of the test medium. The test pressure of the liquid pipeline should be subject to the highest point pressure, but the lowest point of the minimum point must not exceed the tolerance of the pipeline composition. 2.5. When test pressure, the boost should be performed slowly. After the test pressure is reached, the pressure pressure should be 10 minutes. With no leakage, no deformatio

  In order to improve work efficiency and safety production, a single air supply of a single gas supply of a single gas supply is concentrated, and a plurality of gases are placed (high-pressure steel bottles, low temperature Duva cans, etc.) to achieve centralized gas supply. Generally installed in separate buildings or plant adjacent. Gas manifold is suitable for enterprises with large gas consumption, whose principle is to input bottle gas through the cartridge and hose to the main pipe, under reduced pressure, adjustment, and transfer to the use of the construction site through the pipeline, which is widely used in the hospital , Chemical, welding, electronic and research units. Let's introduce the safe use and maintenance of gas bus bar.       1.Open: The cut -off valve before the pressure reduction should be opened slowly to prevent suddenly opening, due to the high pressure shock that the pressure decompression device fails. The pressure gauge pointed out the pressure, and then clockwise rotating the decompressor to adjust the screw and the low pressure gauge to point out the required output pressure, turn on the low pressure valve, and supply the gas to the working point. 2. When installing, pay attention to the cleaning of the connection part to prevent the debris from entering the decompressor. 3. The leakage of the connection part is generally due to insufficient thread tightening, or the cushion is damaged. 4. Stop the gas supply, just adjust the screw with a full loosening decompression device. After the low pressure meter is zero, then turn off the deadline valve, so that the decompressor will not be pressured for a long time. 5. The high -voltage cavity of the decompression device is equipped with a safety valve. When the pressure exceeds the use value, the exhaust is automatically turned on, and the pressure drops to the use value to close it by itself. Do not pull the safety valve. 6. The phenomenon of discovering that the decompression is damaged or leaked, or the pressure of the low pressure gauge continues to rise, and the pressure gauge cannot return to zero. It should be repaired in time. 7. Do not install gas flowing in places with corrosive media. 8. Gas flowing flow must not be inflated in the air cylinder. 9. The flow stream should be used in accordance with regulations, not mixed to avoid danger. 10. Oxygen convergence is strictly forbidden to contact oil to avoid burning and fire.

  Whenever the integrated circuit is manufactured, the industry will mostly speak the wafer, lightning machine and other equipment. However, in the field of chip manufacturing, there is a region that is often easy to neglect, but it is a gas.   The reason why electronic gases is especially critical, and it is inseparable from it during chip manufacturing. A silicon wafer has a few processes such as photolithography, film, etching, cleaning, injection, etc. after polishing treatment and a series of strict screenings, and nearly a thousand steps can eventually become a chip. During this process, almost every link is less inclined. The package generated from a single chip to the last device is also inseparable from the electronic gas. The electronic gas involved in the manufacture of semiconductor devices has very stringent requirements in purity and precision. Once a particular impurity exceeds the standard, it may directly lead to the serious defects of the product, even because of the diffusion of unqualified gases, the entire production line is contaminated or scrapped. Therefore, it can be seen that the quality of the electronic gas directly affects the performance of the semiconductor device, and also forms a high technical barrier for gas suppliers. Throughout the past, some of the high pure gases, rare gas and mixed gases needed by the electronic manufacturing industry need to rely on imports, and Woy Fei Technology Wofly breaks this situation in innovation. In the service electronics manufacturing industry, companies have experienced experienced experience, always applied to special gases and bulk gases in the electronic semiconductor field as key R & D directions, and can supply all kinds of high-purity high-purity gases in many well-known electronic manufacturers around the world. Including nitrogen, hydrogen, oxygen, argon, helium, etc., ensuring the quality of electronic gas supply in the production of semiconductor devices.     Under the premise of system security, air supply, continuous and uninterrupted, the company strictly ensures the quality and reliability of the gas, including the pressure, dew, impurities, granularity, flow rate, etc., each step. Strict technical parameters requirement and quality control measures to ensure stable product quality during transportation and use, avoid secondary pollution. In addition, the company can provide one-stop overall solution for the electronic manufacturing industry to meet the needs of various process links. At the same time, rich industry service experience and efficient implementation, so that the company can fully meet the demanding air needs of the electronic manufacturing industry, shorten the supply cycle, reduce cost, and improve supply stability. With the increasing increase in China's overall film wafers in recent years, the original wafer factory capacity expansion and technology upgrade, electronic gas ushered in a new round of growth opportunities and challenges. Therefore, Wo Fei Technology actively responds to the challenges of the chip technology leap on gas quality. With its rich application experience, leading process level and reliable supply, actively support the development of the industry, and join hands with many domestic and foreign leading integrated circuits. Manufacturing enterprises jointly explore the key meaning of electronic gas supply, to help the quality supply of electronic gas required in electronic equipment development environments, and fully promote the progress of the semiconductor industry, empower "China Core" Strategy.  

Wofly focuses on Market Opportunity of Gas Pipeline Valve Industry, Starting Domestic Replacement Strategy.   After the era of the post, the global economy began to enter the steady recovery phase. The continuous and stable growth of the total global economic volume has driven the development of gas application industries such as oil and gas, semiconductor, and chemicals, causing gas valve parts to achieve faster development, the market is active. After the manufacturing enterprise and multi-party joint efforts and independent innovation, my country's gas valve-related manufacturing enterprises have achieved breakthrough progress, and some domestications have replaced imports, but also break the foreign monopoly, driving the industry transformation and upgrading and technology progress.   As leading gas suppliers, Wofly Technology has superior design and manufacturing experience in gas pipeline engineering valve, Brand reputation, product and service agreement, and a number of products realize localization.   WCOS11Series Automatic Changeover Manifold, WV4 Series low pressure manual/pneumatic diaphragm valve, WV8series low pressure/pneumatic diaphragm valve, WV8Hseries high pressure manual/pneumatic diaphragm valve, WV4 series high pressure manual/pneumatic etc. The WV4 series low-pressure manual / pneumatic diaphragm valve achieves more durable, corrosion, response speed, and long life. The valve member is sealed with a metal to provide no leakage service in vacuum to high pressure; the internal volume is small, fully purged. All-in-wrapped valve seat design, superior anti-expansion and anti-pollution capability; Nickel cobalt alloy film Tablet, with higher durability and corrosion resistance; helium test leakage rate

Main composition and function of binary mixed biber equipment - Wofly Dual gas mixer. Multi-smart gas free equipment fully automatic gas preparation devices Main components and functions of binary hybrid ratiker equipment. Main composition and function of binary mixed biber equipment - Wo Fei Dual gas mixer.   1. Gas flow meter: It is the control mechanism of this system, and its actions are directly active. It is a key component of a mixed ratio. 2. Regulated pressure reduction control valve: control pressure and flow, main regulator components of mixed gas pressure. 3. Analyzer: It is the detection mechanism of this device, showing the percentage content in the matching gas. (External) 4. Switching valve: Controlled the penetration of the gas, stop the device operation. 4.1 Gas flow meter: It is the control mechanism of this system, and its actions are directly active. It is a key component of a mixed ratio. 4.2Regulated pressure reduction control valve: control pressure and flow, main regulator components of mixed gas pressure. 4.3 Analyzer: It is the detection mechanism of this device, showing the percentage content in the matching gas. (External) 4.4 Switching valve: Controlled the penetration of the gas, stop the device operation. 4.5 Pressure sensor: detect mixture pressure, and match the valve adjustment pressure, pressure upper and lower limit parameters confirm 4.6 Mixing tank: mixed gas mixing tank, mix all the gas uniform. 4.7 Touch screen: Display real-time flow, gas supply parameters, alarm parameters, etc. 4.7 Electrical portfolio: Control the operating equipment, intuitive display workflow, working status. Multi-intelligent gas supply equipment fully automatic airfront device 2 yuan package mixed gas supply equipment composition and system design Multivariate smart gas free equipment fully automatic airway equipment 2 yuan package mixing gas supply unit     The raw material gas is provided in the form of high pressure gas cylinders, and the pressure reduction is pressing to the corresponding entry, the connection is completed, and the equipment intake valve is opened after detecting without leakage. After the system is confirmed, the pressure is started after the pressure is correct, and the pressure of the pressure-reducing regulator valve directly passes through the pressure gauge, and intuitively displays the pressure. When the steel bottle gas is less than the pressure required for the gas, an acoustic warning, a combustible gas pipelines set a single-to-valve to avoid harm to other gas undervoltosis, thereby operating stabilization, and the pressure is constant.

  WOFLY has more than 10 years of experience in manufacturing air boxes, gas cabinets, gas manifolds, and gas panels for various industrial applications. By cooperating with the diversified companies in all walks of life, we found that "box" and "gas cabinets" these two terms can be interchangeable.   From the initial design phase to manufacturing and delivery, our experienced engineers and supply chain experts will directly cooperate with customers and materials suppliers. The gas box includes not only the gas itself, but also includes a control device and a metal plate to protect the gas panel and the surrounding environment. There is also space in the air cabinet and a cylinder. The gas tank protects people from potentially harmful gases. We take all precautions to ensure that the gas tank is manufactured according to the precise specifications of manufacturing operations while ensuring that materials and components suitable for each gas characteristic.   With the advancement of various industries such as medical equipment, semiconductors and alternative energy sources, the demand for high quality and complete gas delivery systems is increasing. The gas box can provide a centralized position of the cylinder and regulator for your team because the pipe pushes the gas to the output position of the plurality of workstations. There is a concentrated gas system that allows you to better control gas output, rate and pressure. We can provide you with gas delivery systems while ensuring that the entire system is designed, designed, assembles and tested by our team. After receiving, the air box can be installed.   The gas panel is based on customer order specifications and design. With internal engineering and design capabilities, we help our customers determine the correct gas panel type based on the tasks they want, and then build the valve, regulator, pipe, control device, etc. you need. The gas plate can be mounted in the gas tank or can also be independent of the gas tank / gas cylinder. Gasboard is a relatively simple     Gas cabinet safety In order to solve the problem of gas cabinet safety, it also provides a centralized delivery system, the gas cabinet and the gas cabinet can provide an effective way to deliver the appropriate amount of gas to each workstation. In addition, the implementation of these systems can make it easier to perform gas cylinders to reduce interference between production workshops and reduce the amount of cylinders that occupy space. Here are some of the features you can choose to use in the gas cabinet, as well as the safest gas delivery component type:   1. Corrosive gas can make other materials or destroy when contacting or present. These gases also stimulate and damage the skin, eyes, lungs or mucosa. If any inorganic material or water in the OEM's working environment may penetrate the gas cabinet, the gas delivery system should be equipped with a hydrophobic valve and a check valve to prevent water and other materials from being sucked into any corrosive gas cylinder. gas. In addition, manufacturers should develop security policies, requiring workers to wear protective clothing and equipment while replacing cylinders and set up eye-catching and bathing stations.   2.Toxicity and toxic gases can be unviovive, flammable, oxidized, reactive and high pressure. Their toxicity will be based on a particular gas. A problem that needs to be solved is designed using one of the gas cabinets in which the gas is designed is to replace the potential leakage of toxic gases during the replacement of the cylinder. Whenever the worker is laid in the pipe, it may leak into the room when the worker opens the cylinder valve. The purge valve system designed in the gas cabinet can remove toxic gases in the pipe manifold. You can use an inert gas purge line.   3.The oxidant gas has combustion capabilities, but it is not burn like a typical flammable gas. In addition to O2 gas, this type of gas can replace the oxygen present in the room. Therefore, the manufacturer should keep all flammable materials away from the gas cylinder. The gas delivery system is completely closed, with a small repair panel, and people can enter against the valve. Oxidative gas uses a specially designed regulator and has a label, which is written to the O2 gas service and cleaned.     4.The temperature of the low temperature gas can reach the boiling point of the negative 130 degrees. This extreme cold will significantly degrade many materials to make them brittle and increase their possibility of rupture under high pressure. Blocking in the line can also cause temperature fluctuations, and the temperature rise will cause the pipe to accumulate due to pressure accumulation. When designing the gas cabinet for these gases, the safety barrier valve and exhaust pipe are good choices.   5. flammable gases are often used in the semiconductor industry. These gases can spontaneously explode or fire without any material. Some of the fireless gases can also release a large amount of thermal energy. When designing the gas cabinet for these gas, the manufacturer must adopt a preventive measures as the flammable gases. This includes a deflation valve, a vents, and a flashfirer for conveying the system.

  High-pure stainless steel pipes are used in the application areas: high purity and ultra-high purity gases, flammable and explosive gases, poisonous gases such as special gas pipeline systems, secondary pilot, and other gas equipment.   In the process of stainless steel smelting materials, about 200 g of gas can be absorbed per ton. The stainless steel is processed, not only the surface is adhesive, but also a certain amount of gas is also affected in its metal lattice. When there is air flow in the pipeline, this part of the gas resides in the metal will re-enter the airflow, and pollute the pure gas. When the intractive gas flow is discontinuous, the pipe is adsorbed under pressure to form the gas, and the gas is stopped by the gas stream, and the gas adsorbed by the tube has formed a step-down analysis, and the parsed gas is also used as impurities into the pure gas in the pipe. At the same time, adsorption, analyze, so that the surface of the pipe also produces a certain powder, which is also a purified gas in the tube. This feature of the pipe is critical, in order to ensure the purity of the gas delivered, not only requires a very high smoothness of the inner surface, but also high wear resistant characteristics. High pure gas pipe technology is an important part of the high-purity gas supply system. It is a key technique that can be sent to high purity gas to the gas supply to the gas point. The so-called high purity air pipe technology includes systematic Correct design, pipe fittings and accessories, construction installation and test testing. In particular, some of these gases such as SiH4 self-combustion, as long as one leaks will react vigorously with oxygen in the air, start combustion; and ASH3's vicinity, any micro leaks may cause the harm of people's life, that is Because these obvious hazards, the requirements for system design security are particularly high. When the gas is strong in corrosion, it is necessary to use the corrosion-resistant stainless steel tube. Otherwise, the pipe will produce      The connection of high flow of high traffic, high-purity gas transmission pipeline is in principle, in principle, welding, requiring pipes, and tissue does not change during welding. When the carbon containing too high is welded, the gas permeation of the welded portion such that the internal and external gas is penetrated, destroying the purity, dryness and cleanliness of the delivery gas, resulting in all the efforts of our efforts. In summary, for high purity gas and special gas delivery pipes, a high-purity stainless steel pipe for special treatment is required to make high purity pipe systems (including pipes, tubers, valves, VMB, VMP) in high purity gas distribution. It has a vital mission.    

  All high purity, high purity in the clean nitrogen pipe is required to be delivered to the instrument (POU) through the pipeline. In order to achieve the quality requirements of the instrument, in the case of gas outlet indicators, it is necessary to pay more attention to the pipe system, material selection and construction quality. In addition to the accuracy of the gas or purification equipment, it is largely affected by many factors of the pipeline system. Therefore, the selection of pipes should abide by the relevant industry principles, and indicate the pipeline material.     The material of the clean nitrogen pipeline is selected according to the needs of the use, and the 316L BA is commonly used in contact with the chip but does not participate in the process reactive. The surface roughness in the tube is a standard for measuring the quality of pipe. The lower the roughness, the particle carrying possibilities are greatly reduced. Clean nitrogen pipelines can absorb about 200 g of gas per ton during the stainless steel smelting material. The stainless steel is processed, not only the surface is adhesive, but also a certain amount of gas is also affected in its metal lattice. When there is air flow in the pipeline, this part of the gas resides in the metal will re-enter the airflow, and pollute the pure gas. When the intractive flow of the tube is not continuous flow. When the pipe is adsorbed under pressure, the gas is adsorbed, the gas is stopped, and the gas adsorbed by the pipe has formed a step-down analysis, and the parsed gas is also used as impurities into the pure gas in the pipe. At the same time, adsorption, analyze, so that the surface of the pipe also produces a certain powder, which is also a purified gas in the tube. This feature of clean gas pipeline is critical, in order to ensure the purity of the gas delivered, not only require a very high smoothness of the inner surface, but also high wear resistant characteristics.     When the gas is strong in corrosion, it is necessary to use the corrosion-resistant stainless steel pipe. Otherwise, the pipe of clean gas pipeline will generate corrosion spots due to corrosion, and there will be large metal stripping or even perforation, and thereby pollution Pure gas with a pure gas.

  1.Features of the laboratory air supply system:   1.1 Features: The laboratory requires a constant carrier gas flow, high gas purity, and provides a gas for analyzing equipment for the laboratory to provide quantities and stable gas. 1.2 Economic: Building a concentrated gas cylinder can save limited laboratory space, do not need to cut off when replacing the cylinder to ensure continuous supply of the gas. Users only manage fewer cylinders, pay less steel bottle rent, because all used points used in the same gas come from the same gas source. Such a supply method will ultimately reduce transportation, reducing the amount of retarding gas in the air bottle of gas company, as well as good cylinders management. 1.3 usage: Centralized pipe supply system can place gas outlets in use, such a more reasonable design workplace. 1.4 security: to ensure its storage and use of security. Safeguards the analysis tester from being infringed by the toxic and harmful gases in the experiment.   2. Hazard of laboratory gas   2.1 Some gases have flammable, explosive, toxic, strong corrosion, etc., once they leak, may cause harm to staff and instrument equipment.   2.2. A variety of gases are used in the same environment. If there are two gases that have strong chemical reactions such as combustion or explosions, they may cause injury to staff and instrument equipment. 2.3 Most of gas cylinders are up to 15MPa, namely 150 kg / cm2, if the air bottle decompression device is out of the decompression device, it is possible to eject some parts, and its energy has fatal injury to the human body or equipment. .   3.Conditions and preparations for craft pipe test pressure   The pipeline system is completed and compliant with the design requirements and regulations. The branch, the hanger and the pipe rack are finished, and the ray flaw detection has completely reached the design specifications, and the part of the test, weld and other should be tested is not painted and incubated. The test pressure gauge has been verified, the accuracy is set to 1.5, and the full scale value of the table should be 1.5 to 2 times the maximum pressure measured. Before the test, the test system, equipment and attachments will not be involved in the test system, and the position of the blind board is used to apply the white lacquer lacquered mark and record. The test water should be used with clean water, and the chloride ion content in the water must not exceed 25 × 10-6 (25 ppm). The temporary pipeline for the test is reinforced, and the safety and reliability should be checked. Check if all valves on the pipe are on the open state, whether the spacers are added, and the retracting valve core is to be removed, and after the purge can be reset.