Safety valve calibration device

Abstract

The invention relates to the field of calibration equipment and discloses a safety valve calibration device comprising a connecting device and an air supply device and comprising a ninth cut-off control valve communicating with the connecting device; a pressure detecting device connected with the connecting device; a first pipeline for communicating the air supply device with the ninth cut-off control valve; a liquid storage cylinder; a first curved pipe disposed at the side portion of the liquid storage cylinder; a second curved pipe disposed at the side portion of the liquid storage cylinder; a second pipeline for communicating the other end of the first curved pipe with the air supply device; and a third pipeline for communicating the other end of the second curved pipe with the ninth cut-off control valve. The safety valve calibration device simultaneously verify the set pressure and the sealing performance of a safety valve, is simple in connection with the safety valve, and can be efficiently connected with the safety valve, thereby improving the verification efficiency of the safety valve. When verifying the sealing performance, the safety valve calibration device converts the air leakage of the safety valve into the water level change of the liquid storage cylinder so that the air leakage of the safety valve is easy to measure or observe and that a verification result is accurate.

Description

technical field [0001] The invention relates to the field of calibration equipment, in particular to a safety valve calibration equipment. Background technique [0002] Safety valve is an extremely important safety pressure relief device on boilers, pressure vessels and pressure pipelines. It acts as an automatic pressure relief protection when pressure-bearing equipment or systems are overpressured. The quality and performance of its products directly affect the safe operation of pressure-bearing equipment. . In order to ensure the quality and safety of the safety valve, the national safety technical specification "Safety Valve Safety Technology Supervision Regulations" mandatoryly stipulates that the safety valve shall be calibrated once a year during the use of the safety valve. The content of the calibration includes: set pressure and sealing performance. [0003] At present, the main method for testing the sealing performance is: after completing the set pressure verif...

AI Technical Summary

Problems solved by technology

This will inevitably lead to greater human influence factors: good eyesight, counting is more accurate, and eyesight is poor, counting error is larger; secondly, the whole process cannot be recorded and traced;

[0010] 2. The technical requirements for installing the discharge port of the safety valve are high, and the process is time-consuming; figure 2 It can be seen that not only the safety valve discharge port 102 needs to be assembled and sealed, but also the valve 100 body equipment should also be considered sealed; therefore, the working process is complicated and the work efficiency is low; every time a safety valve is checked, a bunch of valves must be reinstalled on it. Devices or parts, the calibration efficiency is low, especially in the case of multiple safety valves to be calibrated

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