Detection system and test method suitable for pressure regulator in front of gas indoor meter

Abstract

A detection system suitable for a pressure regulator in front of a gas indoor meter comprises a gas supply system, an experiment gas conveying pipeline, a control pipeline, a telescopic clamp system,an industrial personal computer, a primary pressure control device and a secondary pressure control device. The telescopic clamp system comprises an exhaust ball valve, a telescopic pipe, a tested pressure regulator and a flow controller which are connected in sequence. The primary pressure control device comprises a primary pressure regulating electric proportional pressure regulating valve and aprimary main body throttling device; the secondary pressure control device comprises a secondary pressure regulating electric proportional pressure regulating valve, a secondary main body throttlingdevice and a bypass pipeline; the industrial personal computer is connected with the primary pressure regulating proportional regulating valve and the secondary proportional regulating valve through an analog quantity output module and a data / signal transmission line, so analog signal transmission is achieved, and the regulating valves are controlled according to the analog quantity so as to control output air pressure signals. The system is large in flow regulation range, high in pressure control precision, small in minimum flow, convenient to install and capable of integrating air supply, pressure regulation and display.

Description

technical field [0001] The invention relates to the field of gas indoor meter pre-pressure regulators, in particular to a detection system and test method suitable for gas indoor meter pre-pressure regulators. Background technique [0002] With the rapid development of the population in large and medium-sized cities in China, residential buildings are gradually developing into high-rise buildings, and the additional gas pressure caused by the elevation difference of the risers of high-rise buildings may easily cause insufficient or excessive gas supply pressure in the user's room. For traditional civilian stoves and water heaters, the air supply pressure at the front end should be in the range of 1000-3000Pa. If it exceeds this range, it will lead to unstable combustion, reduced thermal efficiency, and serious safety hazards. Therefore, all indoor pressure regulation schemes have been adopted by the majority of gas companies, and indoor pre-meter pressure regulators have bec...

AI Technical Summary

Problems solved by technology

During the test, with the opening or closing of the downstream valve, the pressure at the front end of the pressure regulator under test is often not guaranteed

Therefore, higher requirements are put forward for the pressure control system of the gas supply; in addition, the test system needs to be suitable for different types of pre-meter pressure regulators, and the experimental conditions are complex, requiring the test system to have a large flow adjustment range, high precision, and small minimum flow ; At the same time, due to the different types and sizes of the interface of the pre-meter voltage regulator, the test system should be easy to disassemble and assemble the voltage regulator under test.

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