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| Add Time： | 2016-08-21 16:52:37 |
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Summary
In our thirty years of research and development and production of pressure based on the pump, we produce a series of pressure pump can better meet the user. Convenience,
The utility model has the advantages of labor saving, good sealing and easy maintenance.
As the indispensable auxiliary equipment for pressure measurement, the pressure seal is the most important index of the pressure generating device. The pressure generating device of our factory is in the leading position of the same kind of products in the aspects of sealing, making the pressure of the light and micro regulating performance. In particular, we consider the problem that the micro pressure is affected by the temperature, and we have made a good solution for the steady pressure reduction process of the high pressure gauge.
The utility model relates to a pressure testing system composed of a piston and a pressure calibrator. In the effective stroke of the piston, the system pressure does not change. The pressure testing system composed of digital pressure gauge and pressure gauge is a closed and non - dynamic balance system. In the process of compression, compression due to reasons, need to absorb the energy of molecular, molecular gap decreases slowly, so the pressure is not immediately stable (pressure drop, system instability), need to wait for the pressure will be stable for a period of time. In the process of reducing pressure, due to the expansion of the reasons, the molecules need to release energy, the molecular gap increases, so the pressure will not be immediately stable (pressure rise, the system is not stable), need to wait for a period of time to stabilize the pressure.
The above phenomenon, but the physical process is different, the phenomenon in the liquid pressure pump and digital pressure calibrator composed of the system is particularly evident.
The main requirements of national standards for sealing test:
The pressure gauge shall be started after 10 minutes of compression, and the leakage of the pressure gauge shall not exceed the full range of 5 minutes within the range of 5% minutes.
The main requirements of the national verification regulation for sealing test:
The pressure gauge shall be started after 5 minutes of compression, and the leakage of the pressure gauge shall not exceed the full range of 5 minutes within the range of 4% minutes.
