Nuclear energy safety pressure relief valve and position indicator device

A pressure relief valve and indicator technology, applied in the direction of valve device, valve operation/release device, valve details, etc., can solve the problem of high cost of use, the main body of the pilot safety pressure relief valve cannot directly display the valve open and close state Problems such as the location of the valve stem achieve the effects of low cost, simple and convenient assembly, and increased reliability

Pending Publication Date: 2020-05-05
SICHUAN SUNNY SEAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The body of the pilot-operated safety relief valve cannot directly display the current opening and closing status of the valve and the position of the valve stem, so a position indicator must be used to detect the displacement of the valve stem. The current valve position indicators all rely on imports, and their use higher cost

Method used

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  • Nuclear energy safety pressure relief valve and position indicator device
  • Nuclear energy safety pressure relief valve and position indicator device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a nuclear energy safety pressure relief valve position indicator device includes a housing 10. A sliding chamber 4 with an open end is arranged inside the housing 10. A guide rod 2 is arranged in the sliding chamber 4. Between the sliding chamber 4 and the guide rod 2 An elastic member 6 is provided, and a differential inductive displacement sensor is provided at the opening end of the casing 10 away from the sliding chamber 4. In this embodiment, the elastic member 6 is a spring, and one end of the spring is connected to the inner wall of the sliding chamber 4, and the other end is connected to the guide rod 2 , when the valve stem 17 in the safety valve moves, it will drive the guide rod 2 to move. At this time, the differential inductive displacement sensor will detect the signal of the movement of the guide rod 2, and then judge whether the safety valve is opened.

[0036] When in use, one end of the guide rod 2 protrudes out of the housing ...

Embodiment 2

[0044] Such as figure 2 As shown, a nuclear energy safety pressure relief valve includes Embodiment 1, and also includes a safety valve body. The safety valve body includes a housing 16 and a valve stem 17 arranged in the housing 16. The valve stem 17 is provided with an inclined surface 18. , the inclined surface 18 is set at an acute angle with the central axis of the valve stem 17, and a through hole 19 is arranged on one side of the housing 16. The housing 10 is located at the opening end of the sliding chamber 4 and connected in the through hole 19, and the guide rod 2 is located outside the sliding chamber 4. One end is in conflict with the inclined surface 18 .

[0045] When in use, a through hole 19 is opened on the housing 16 along the axial direction perpendicular to the valve stem 17, and then the end of the housing 10 is inserted into the through hole 19 and the locking thread 3 is matched with the inner wall of the through hole 19. The guide rod 2 positioned in ...

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Abstract

The invention relates to a nuclear energy safety pressure relief valve and position indicator device. The nuclear energy safety pressure relief valve and position indicator device comprises an outer shell; a sliding cavity with an opening in one end is formed in the outer shell; a guide rod is arranged in the sliding cavity; an elastic piece for making the guide rod have kinematic potential to theoutside of the sliding cavity all the time is arranged between the sliding cavity and the guide rod; a differential inductive displacement sensor used for detecting whether the guide rod moves or notis arranged at the position, deviating from the opening end of the sliding cavity, of the outer shell; and the nuclear energy safety pressure relief valve and position indicator device can ensure that the displacement and the position of a valve rod of a safety pressure relief valve can be monitored precisely in time, has the advantages of high reliability and low cost, and is easy and convenientto repair by directly taking down the outer shell for repairing during late repair and maintenance.

Description

technical field [0001] The invention relates to the technical field of nuclear power safety pressure relief valves, in particular to a nuclear power safety pressure relief valve and a position indicator device. Background technique [0002] Pilot-operated safety pressure relief valve is one of the important equipment of PWR nuclear power plant. As the safety guarantee of the primary circuit system under accident conditions, it directly affects the reliability and safety of nuclear power plant operation. When the pressure in the system rises and exceeds the safety When the valve is set at the set value, the safety valve will automatically open, and the system medium will be discharged through the main valve part to prevent the system from continuing to increase the pressure; when the pressure drops to the reseating pressure, it will be automatically closed in time to ensure the continuous safe operation of the system. The function of the main valve is to realize the discharge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K37/00F16K31/06
CPCF16K31/0675F16K37/0041
Inventor 奉明忠刘伟郑孝珠杜茂吴希曦邹六平王全亚林永嘉陈侃帅雨忠
Owner SICHUAN SUNNY SEAL
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