Accelerated failure experimental method for gas pressure regulator and experimental device thereof

Abstract

The invention provides an accelerated failure experimental method for a gas pressure regulator and an experimental device used by the experimental method. Through the method of monitoring pressure change of experimental medium on a side of an outlet of the measured gas pressure regulator placed in an environment with preset temperature, the measured gas pressure regulator is driven to carry out start and stop motion according to a control mode until the set experiment number is achieved or the measured gas pressure fails, so the experiment aim of measuring to accelerate failure of the measured gas pressure regulator is achieved. The control mode has two kinds: one kind is that the start and stop of the measured gas pressure regulator are controlled according to preset and fixed time intervals, and the other kind is that the start and the stop of the measured gas pressure regulator are controlled with the requirements of maximum experimental pressure and the minimum experimental pressure are met. The accelerated failure experimental method for the gas pressure regulator and the experimental device used by the experimental method can be based on the number of fixed cycling and reciprocating experiments to compare weakening of static indexes of characteristics of the gas pressure regulator, and can also be based on set index limits to compare the number of fixed cycling and reciprocating experiments. According to experimental data and relevant researches, assessment on operational reliability and life prediction of the gas pressure regulator can be achieved.

Description

Technical field: [0001] The invention belongs to the field of city gas, and relates to an accelerated failure test method and test device of a gas pressure regulator. Background technique: [0002] The gas pressure regulating device is an important network hub in the gas supply system and an important node device that controls the safety of the gas supply in the urban transmission and distribution pipeline network. For this reason, in addition to strengthening maintenance, people pay more attention to the safety and reliability prediction research of product equipment, and the service life prediction is one of the focuses. [0003] The so-called life prediction is to give a relatively clear judgment on the safe operation time or failure expectation of the equipment through the research of the accelerated failure test method and the correlation theory of the equipment. At present, there is still a technical gap in the life prediction of gas pressure regulators in my country....

AI Technical Summary

Problems solved by technology

The technical defect of this test is that the reliability of the mechanical transmission of the actuator of the gas pressure regulator at normal temperature has been assessed, but it is not enough to characterize the reliability of the actual operation of the gas pressure regulator under different gas media and different extreme operating temperatures sex

The technical defect of this test is that the static accelerated aging test of corrosion resistance to gas medium is carried out on the weak parts of the gas pressure regulator which are safe to operate, but it is not enough to characterize the non-metallic parts under the stress condition of operating pressure. The actual operating reliability under different extreme operating temperatures cannot represent the operating reliability of the whole gas pressure regulating equipment

Of course, the superheated medium aging test method is also proposed in the relevant industry standards, but its defect is that it can only characterize the static corrosion resistance aging performance of a non-metallic component material of gas equipment, and it is still not enough to explain the reliability of the part under operating conditions. It is impossible to explain the service life of the safe and reliable operation of the overall equipment

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