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Device for detecting leaking performance of gas meter motor valve

A gas meter and performance technology, which is applied in the direction of measuring the rate of increase and deceleration of the fluid, using liquid/vacuum degree to measure the liquid tightness, etc., can solve the problems of wasting time and affecting efficiency, and achieve convenient use, simple control and good structure simple effect

Inactive Publication Date: 2011-05-25
ZHEJIANG UNIV
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Problems solved by technology

This operation wastes time and affects efficiency

Method used

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  • Device for detecting leaking performance of gas meter motor valve
  • Device for detecting leaking performance of gas meter motor valve
  • Device for detecting leaking performance of gas meter motor valve

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with drawings and embodiments.

[0012] Such as figure 1 , figure 2 As shown, the present invention comprises a mass flow sensor 1, a gas storage tank 4, a three-way solenoid valve 5, two two-way solenoid valves 8, 10 and a gas meter pressing device 16; the lower end of the gas meter upper casing 12 is placed on a silica gel pad 15. A gas meter pressing device 16 is installed on the air inlet and the gas outlet at the upper end of the gas meter upper casing 12 . The gas outlet of the first two-way solenoid valve 8 communicates with the negative pressure gas source joint 9, and the air inlet of the first two-way solenoid valve 8 connects with the gas meter upper casing through the gas outlet joint 11 and the gas meter pressing device 16. The gas outlet on the upper end of 12 is connected; the gas inlet of the second two-way solenoid valve 10 is connected to the atmosphere, and the gas outlet of the s...

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Abstract

The invention discloses a device for detecting leaking performance of a gas meter motor valve. A gas meter upper shell is arranged on a silica gel pad; the upper end of the gas meter upper shell is provided with a gas meter compressing device; a gas outlet of a first two-way electromagnetic valve is communicated with a negative-pressure gas source joint, and a gas inlet of the first two-way electromagnetic valve is communicated with a gas outlet at the upper end of the gas meter upper shell through the gas meter compressing device; a gas inlet of a second two-way electromagnetic valve is communicated with the atmosphere; one path of gas outlets of the second two-way electromagnetic valve is communicated with a gas inlet of a mass flow sensor, and the other path of the gas outlets of the second two-way electromagnetic valve is communicated with a gas inlet of a three-way electromagnetic valve; a gas outlet of the mass flow sensor is connected with the other gas inlet of the three-way electromagnetic valve and a gas storage tank respectively; and a gas outlet of the three-way electromagnetic valve is communicated with a gas inlet at the upper end of the gas meter upper shell througha gas inlet of the gas meter compressing device. The device has the advantages of simple structure, safety, reliability and simple control, and can detect the leaking properties of the gas meter upper shell and the gas meter motor valve respectively.

Description

technical field [0001] The invention relates to a gas leakage detection device, in particular to a device for detecting the leakage performance of a motor valve of a gas meter. Background technique [0002] At present, whether it is the national appraisal standard or in actual production, the gas meter performance detection is performed separately by two processes, the casing leakage detection and the motor valve leakage detection, and both detections use positive pressure. It is easy to cause deformation of the shell. The inspection of the shell is the whole machine inspection, that is, the leakage of the upper and lower shells is tested after the installation is completed. If a leak is detected, it needs to be disassembled and reassembled. This operation wastes time and affects efficiency. For the detection of the leakage of the motor valve, the positive pressure water detection device is currently used, which requires the operator to hold the positive pressure air sourc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/28
Inventor 赵亮邵彩云刁常堃
Owner ZHEJIANG UNIV
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