Multifunctional safety valve verification device

Abstract

The invention discloses a multifunctional safety valve verification device which includes: a safety valve verification test unit, a measurement and control unit, and a safety protection unit. The safety valve verification test unit comprises a high-pressure needle-valve, a gas tank, a manual pressure-regulating valve, a high pressure filter, a proportional pressure-reducing valve, an electrical proportional valve, a first solenoid valve, a second solenoid valve, a normally closed pneumatic control ball valve, a normal open pneumatic control ball valve, and a safety verification station. The safety verification station is used for installing the safety valve to be tested. The measurement and control unit comprises a controller, a pressure sensor, a flow meter, and a displacement sensor. The safety protection unit is used for automatic pressure release in an experiment process. The multifunctional safety valve verification device can carry out multiple tests such as a set-pressure deviation test, a sealing test, a discharge pressure test, an on-off differential pressure test, an open height test, and a displacement and displacement coefficient test. The automation degree is high. The function is comprehensive. The multifunctional safety valve verification device is safe and reliable. The maintenance is convenient. The operation is simple, and the test counting is accurate.

Description

technical field [0001] The invention relates to the technical field of valve testing, in particular to a multifunctional safety valve calibration device. Background technique [0002] The traditional calibration test of the safety valve with a nominal diameter ≤ 10mm is carried out according to the national safety valve standard (GB / T 12243-2005 spring direct load safety valve). For the set pressure and sealing test, the valve needs to be immersed in water for operation and testing , which is extremely inconvenient, especially the opening height test requires the use of extremely complicated tooling for testing, and the safety risk is relatively large. However, according to the query patents, the current semi-automatic or automatic safety valve calibration bench basically only has the function of setting pressure calibration test, and the function is single. Contents of the invention [0003] Aiming at the existing problems or improvement needs, the present invention prov...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the existing problems or improvement needs, the present invention provides a multi-functional safety valve calibration device, which is suitable for setting pressure deviation test, sealing test, discharge pressure test, opening and closing pressure test, etc. Differential test, opening height test, displacement and displacement coefficient test, etc.

Images