Low-temperature safety valve testing device

A test device and safety valve technology, which is used in measuring devices, mechanical valve testing, fluid tightness testing, etc., can solve problems such as difficult safety valves, achieve good test temperature, expand test temperature range, and wide applicability.

Pending Publication Date: 2020-09-15
福建中石特种阀门制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a low-temperature safety valve test device to solve the problems that the existing low-temperature safety valve test device is difficult to provide a test environment with both low temperature and high pressure for the safety valve.

Method used

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Embodiment Construction

[0035] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0036] refer to figure 1 , figure 2 , a low-temperature safety valve test device, including a test container 1, a temperature control layer 2 and an insulation layer 3, the test container 1 is used to accommodate a test medium. The above-mentioned temperature control layer 2 is set outside the above-mentioned test container 1 , and the heat preservation layer 3 is set outside the temperature control layer 2 , and the heat insulation layer 3 is used for heat insulation of the temperature control layer 2 . The low temperature safety valve test device is a tank-shaped structure with three layers of tanks set in sequence. The three layers of tanks are set in sequence from the inside to the outside of the above-mentioned test container 1, the above-mentioned temperature control layer 2 and the above-mentioned insulation layer 3. The pot-like structure can b...

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Abstract

The invention relates to a low-temperature safety valve test device. The device comprises a test container, a temperature control layer and a thermal insulation layer. The test container is used for accommodating a test medium; the test container is provided with a test medium inlet and a sample piece interface, the test medium inlet is used for inputting the test medium into the test container, the sample piece interface is connected with the interior of the test container, and the sample piece interface is used for connecting a tested safety valve; and the temperature control layer sleeves outside the test container, the heat preservation layer sleeves outside the temperature control layer, and the heat preservation layer is used for heat insulation and heat preservation of the temperature control layer. And a temperature control cavity is formed between the temperature control layer and the test container, the temperature control cavity is used for accommodating a temperature control medium, and the temperature control medium is used for regulating and controlling the temperature of the test medium through heat exchange between the temperature control medium and the test medium.In the invention, a test environment with both low-temperature and high-pressure requirements can be applied to the sample piece interface, and the testing device capable of meeting higher detectionstandards and detection requirements is provided.

Description

technical field [0001] The invention relates to a valve detection device, in particular to a low temperature safety valve test device. Background technique [0002] The safety valve test generally has two requirements. First, pressurize the safety valve in a low temperature environment. When the pressure reaches the set pressure of the safety valve, the safety valve will take off and start to release the pressure. Record the entire pressure change process with time: Second, in a low temperature environment, pressurize the safety valve to the sealing test pressure, and measure the average leakage during the pressure holding time. [0003] However, the liquid nitrogen self-evaporation pressurization method provided by the GB / T 29026-2012 standard has certain limitations, specifically: [0004] The physical characteristics of nitrogen, the critical temperature is 126K (-147°C), the critical pressure is 3.4MPa, and the temperature of liquid nitrogen at standard atmospheric pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/003G01M3/28
CPCG01M3/2876G01M13/003
Inventor 陈华凯陈华生陈其龙
Owner 福建中石特种阀门制造有限公司
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