Inspect the appearance of the pipeline and confirm that all pipelines:
1) The construction shall be arranged according to the design, and the gas type shall be marked.
2) All materials used shall comply with the regulations.
3) The welding of the pipeline shall comply with the specifications, and the angle shall be free from misalignment, inclination and distortion.
4) No dirt remains in the pipeline.
5) The pipeline is free of defects such as depression and crack.
Pressure maintaining test:
1) Open the end valves of all gas lines.
2) Close the end valve of the gas pipeline to be tested.
3) Charge the gas pipeline to be tested with N2 to a certain pressure, observe for five minutes, and observe whether the pressure gauge drops.
4) If the pressure gauge does not drop, it means that the pipeline connection is correct. If there is no drop, open the end valve of the gas pipeline to be tested to judge whether the pressure gauge will drop to zero. If it drops to zero, it means that the pressure gauge is OK.
Pipeline pressure test and air tightness test:
1) Use 0.1 μ Pressure test the nitrogen filtered by M filter.
2) The design values of the required pressure and pressurization time during pressure test shall be based on the design conditions.
3) After the pipeline is filled with gas at the specified pressure, check all connected and welded parts, detect the leakage with leakage liquid, maintain a certain pressure in the pipe and make records.
4) Record any anomalies found.
5) Record the relevant data read by the pressure gauge in use.
6) After completing the pressure test, start the air tightness test.
DEAR air separation has 20 years of experience in manufacturing air separation equipment and nearly 10 years of experience in operation and maintenance of air separation equipment, and has accumulated mature and perfect standard and standard processes for overall operation and maintenance of air separation equipment.
The company has a number of patented technologies, of which two ultra-low pressure discharge and energy-saving patents belong to the domestic leading level, which can reduce the energy consumption of air separation equipment by 5% - 15% and save operation costs.
DEAR air separation spends a lot of money to build an intelligent production workshop to ensure that the product quality is close to zero defects, improve the accuracy of air separation equipment and shorten the scheduled cycle.
Scientific and technological innovation + management innovation initiated the reform of the air separation industry model, and developed a remote intelligent monitoring system with the help of Internet technology. Realize the functions of remote control, automatic data collection and analysis, and achieve early detection and early warning of equipment faults.
As an excellent representative of private enterprises in air separation field, DEAR air separation advocates open up, cooperation and win-win cooperation, innovates and expands industrial value with customers and partners, forms healthy and benign industrial ecosystem, and actively assumes social responsibilities. It supports and participates in the formulation of industry standards, promotes the healthy development of industries, and follows closely the Internet plus, deep integration and effective penetration. Promote the development of industrial intelligence.
