Low temperature valve performance measuring system based on computer data acquiring
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A technology of data acquisition and testing system, which is applied in the testing of machine/structural components, liquid tightness measurement using liquid/vacuum degree, measuring device, etc. Discontinuity and other problems, to achieve the effect of facilitating unified storage and management, improving work efficiency, and ensuring personnel safety
Active Publication Date: 2009-09-23
BAOYI GROUP
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In the past, the method of directly fixing the valve on the bottom plate of the low-temperature test tank had disadvantages such as discontinuous test process, low test work efficiency, and large consumption of liquid nitrogen.
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[0010] The low-temperature valve performance test system based on computer data collection has a low-temperature test tank 1. The low-temperature test tank 1 is fixed with a mounting base 4 and an electromagnet 5. The low-temperature test tank 1 also has an upstream method connected with the cryogenic valve 2 to be tested The flange end cover 3 and the downstream flange end cover 6 connected to the cryogenic valve 2 to be tested. The upstream flange end cover 3 is sequentially connected with the gas coil 35, the safety valve 27, the upstream pressure sensor 28, and the upstream pipeline stop valve 29 , Upstream quick connector 30, drain valve 31, pressure reducing valve 32, helium cylinder stop valve 33, helium cylinder 34; downstream flange end cap 6 is connected to downstream pressure sensor 23, downstream pipeline stop valve 22, downstream rapid Connector 21, shut-off valve 19, shut-off valve 15, hose 18, water tank 16, measuring cylinder 17, the other end of shut-off valve 19 ...
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Abstract
The invention discloses a low-temperature valve performance testing system based on computer data collection. It includes low temperature test tank, low temperature valve to be tested, flange end cover, mounting base, electromagnet, liquid level sensor, self-pressurized liquid nitrogen storage tank, mechanical pump, measuring cylinder method flow test system, flow meter, pressure sensor, pressure Signal processors, thermocouples, temperature signal processors, computer data acquisition systems, safety valves, vent valves, pressure reducing valves, helium cylinders, gas coils, etc. The invention realizes centralized storage, display and printing, etc., and also realizes automatic control of the self-pressurization system of the liquid nitrogen storage tank, and improves the work efficiency, timeliness, accuracy and safety of the test. The electromagnet can be fixed by electrification, which improves the flexibility and economy of the whole operation process.
Description
Technical field [0001] The invention relates to a cryogenic valve performance test system based on computer data collection. Background technique [0002] With the development of cryogenic technology, cryogenic fluids have been more and more widely used. For example, liquid nitrogen is widely used in industrial production, scientific research and even civil use. Liquid hydrogen and liquid oxygen as rocket propellants show significant advantages in the field of national defense . In addition, with the rapid increase in energy consumption in recent years, many countries, including China, have already or are considering adopting a large amount of natural gas as one of the main energy sources. In order to improve the long-distance transportation efficiency of natural gas, it needs to be liquefied and transported to Place of use. In all aspects of using cryogenic liquid, cryogenic valve is one of the indispensable parts. However, because this type of valve works in a low temperature z...
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