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Nuclear power station check valve testing device and test method

A technology of test device and check valve, which is applied in the direction of measuring the increase and decrease rate of the fluid, using liquid/vacuum degree to measure the liquid tightness, etc., can solve the problems of damage, increase of test cost, increase of equipment, etc., and reduce the reading error, reduce equipment damage and personal injury, and the effect of simple test work

Active Publication Date: 2017-09-19
中广核工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in view of the prior art, the low-pressure safety injection pump needs to be artificially activated for the check valve sealing test, which increases the risk of equipment damage and personal injury during the test, and a large number of high-precision instruments need to be installed on site It leads to problems such as increased test costs, and provides a nuclear power plant safety injection pipeline check valve test device and test method without starting the low-pressure safety injection pump, which has higher test efficiency and lower cost.

Method used

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  • Nuclear power station check valve testing device and test method
  • Nuclear power station check valve testing device and test method
  • Nuclear power station check valve testing device and test method

Examples

Experimental program
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Effect test

Embodiment 1

[0052] figure 1 It is a schematic connection diagram of the check valve test device, such as figure 1 As shown, the check valve test device includes:

[0053] The upstream pipeline 101 is used to connect the safety injection system 100;

[0054] a downstream pipeline 102 for connecting to the reactor coolant system 500;

[0055] The first check valve 10, connected between the upstream pipeline 101 and the downstream pipeline 102, also includes:

[0056] The high-pressure introduction component is connected between the primary circuit waste heat discharge system 700 and the downstream pipeline 102 of the first check valve 10, and is used to introduce the pressure of the primary circuit waste heat discharge system from high pressure and reduce the high pressure to the first The test pressure of a check valve 10 is delivered to said first check valve 10;

[0057] The pressure detecting member 130 is connected to the upstream pipeline 101 or the downstream pipeline 102 of the ...

Embodiment 2

[0091] The invention also provides a test method for the check valve of the nuclear power plant, which is used for the test of the sealing performance of the check valve of the safety injection pipeline of the nuclear power plant.

[0092] It should be noted that the check valve test can be divided into two basic methods, one is to pressurize the downstream of the check valve, isolate the upstream after pressure relief, and use a pressure gauge to monitor the rate of rise of the upstream pressure; After the downstream of the valve is pressurized, it is isolated, and the upstream is depressurized, and the downstream pressure drop rate is monitored with a pressure gauge.

[0093] combine figure 1 As shown, the following is a detailed description of the sealing test method for increasing the pressure at the downstream of the first check valve 10, and isolating after upstream pressure relief, using the pressure detection assembly 130 to detect whether the upstream pressure increases...

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Abstract

The invention provides a nuclear power station check valve testing device which is used for a safety injection line check valve seal test, and the device comprises an upstream line, a downstream line, a high pressure introduction component and a pressure detecting piece. The invention also comprises a nuclear power station check valve test method, the pressure of a circuit residual heat removal system is introduced to a check valve line through the high pressure introduction component, the purpose of realizing check valve line pressure introduction without turning on a low pressure safety injection pump is achieved, and the test risk is greatly reduced; the pressure detecting piece is utilized to replace the instrument in the prior art, a high pressure instrument hose is adopted to connect with a pressure meter, the mounting position of the pressure meter is more flexible, so that the readability of the instrument is improved, and the reading error is reduced.

Description

technical field [0001] The invention relates to the technical field of sealing performance test of a check valve of a safety injection pipeline of a pressurized water reactor nuclear power plant, in particular to a test device and a test method applied to a test of the tightness of a check valve of a safety injection pipeline of a pressurized water reactor nuclear power plant. Background technique [0002] Safety injection system (referred to as RIS) and reactor cooling system (also known as primary circuit, referred to as RCP) are the key systems of the nuclear island. Safety injection system for remediation to ensure the safe operation of nuclear power plant reactors. [0003] The safety injection pipeline of nuclear power plant is designed with a series of non-return valves to form the isolation boundary of the primary circuit. stop valve. The good sealing of the check valve of the safety injection pipeline is an important guarantee for maintaining the integrity of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/28
CPCG01M3/28
Inventor 王江洪韩立杰翟巴菁王昭强王磊谭海波闫明晶朱增培姚孟琦廖彤彤詹华斌
Owner 中广核工程有限公司
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