Volume determining method for safety valve type test container

A technology for determining the method and safety valve, which is applied in the direction of volume measuring instruments/methods, container/cavity capacity measurement, instruments, etc., can solve the problems such as there is no method for determining the volume of the safety valve type test container, and achieve high reliability and obtain way simple effect

Inactive Publication Date: 2019-02-01
SHENZHEN INST OF SPECIAL EQUIP INSPECTION & TEST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no method for determining the volume of the safety valve type test container in the relevant safety technical specifications and standards.

Method used

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  • Volume determining method for safety valve type test container

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Embodiment Construction

[0041] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0042] Such as figure 1 As shown, the arrangement structure of the safety valve type test device in a preferred embodiment of the present invention is as follows:

[0043] The power generation device 1 is connected to the power source storage device 2 through pipelines, the power source storage device 2 is connected to the test container 3 through pipelines, the safety valve 4 to be tested is installed on the test container 3, and the power generation device 1 is connected to the power source storage device 2. The gas is injected into the test container 3. A regulating valve 5 is provided on the pipeline between the power source storage device 2 and the test container 3. After the pressure in the test container 3 reach...

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Abstract

The invention relates to a volume determining method for a safety valve type test container. A safety valve to be tested is arranged on a test container such that the safety valve to be tested automatically opens after a pressure in the test container reaches a specific value. The volume determining method for the test container comprises the following steps of: setting a mass of air discharged from the safety valve to be tested to be m3 within a discharge time T, setting a mass of air discharged into air to be m within the discharge time T, and m3 = m; wherein m3 = G x T, G is a displacementof the safety valve to be tested; m = r x V3, r is a density of air in a free state, V3 is a volume of gas in the test container after the gas is discharged into the air; obtaining the volume V of thetest container according to an ideal gas state equation and a law of conservation of mass. According to the volume determining method for the safety valve type test container, using the ideal gas state equation and the law of conservation of mass, the volume of the test container can be obtained, by combining data of pressures before and after the discharge, the temperature in the test containerand the like, and it is ensured that the test container meets the minimum volume required for the test of the safety valve to be tested.

Description

technical field [0001] The invention relates to the field of type testing of safety valves, more specifically, to a method for determining the volume of a test container for type testing of safety valves. Background technique [0002] The safety valve is a safety accessory of special equipment. According to the requirements of the national special equipment safety technical specification, the safety valve should undergo a "safety valve type test" before being manufactured by the manufacturer, and it can only be produced and used after passing the type test. [0003] The process of safety valve type test is generally: generating power device - power source storage device - type test test vessel. The power generation device injects the gas stored in the power source storage device into the test container. The test container is provided with a safety valve to be tested. When the pressure in the test container exceeds the take-off pressure of the safety valve to be tested, the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F17/00
CPCG01F17/00
Inventor 孙琦谢青延
Owner SHENZHEN INST OF SPECIAL EQUIP INSPECTION & TEST
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