Running water prevention device in disassembling self-sealing check valve and operation method thereof

An operation method and self-sealing technology, which is applied in the direction of pipes/pipe joints/fittings, mechanical equipment, pipe components, etc., can solve the problems of site pollution, operator radiation contamination, water leakage, etc., and achieve safe and reliable use and fast recovery. The effect of installing and solving the problem of running water

Pending Publication Date: 2019-01-15
JIANGSU NUCLEAR POWER CORP
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to address the deficiencies of the above-mentioned prior art, to provide a self-sealing check valve anti-running device and its operation method when it is unloaded, which is used to solve the phenomenon of water run-out when the self-sealing check valve is disassembled and maintained in a nuclear power plant, causing the site Technical aspects of contamination or risk of radioactive contamination of operators

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Running water prevention device in disassembling self-sealing check valve and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The technology of the present invention is further described below:

[0027] Such as figure 1 As shown, a self-sealing check valve anti-running device when unloading, including:

[0028] A self-sealing check valve anti-running device when unloading, comprising: snap ring A1, snap ring B2, limit bolt support arm 3, limit jacking bolt 4, fastening bolt A5 and fastening bolt B6; The snap ring A1 and the snap ring B2 are tightly connected by the fastening bolt A5 and the fastening bolt B6; the limit bolt support arm 3 is connected with the snap ring A1; the limit jacking bolt 4 is installed in the limit bolt support arm 3 .

[0029] Both the clasp A1 and the clasp B2 are of semicircular structure.

[0030] Both ends of the snap ring A1 and the snap ring B2 are provided with threaded through holes.

[0031] The inner diameters of the snap ring A1 and the snap ring B2 are the same and match the diameter of the valve body of the self-sealing check valve.

[0032] The limit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of mechanical assembly and particularly relates to a running water prevention device in disassembling a self-sealing check valve and an operation method thereof. The device comprises a clamping ring A, a clamping ring B, a limit bolt support arm, a limit tightening bolt, a fastening Bolt A and a fastening bolt B. The clamping ring A and the clamping ring B are fastened and connected by the fastening bolt A and the fastening bolt B. The limit bolt support arm is connected to the clamping ring A, and the limit tightening bolt is installed in the limitbolt support arm. According to the invention, the problem of running water in disassembling the self-sealing check valve of a nuclear power plant can be effectively solved, time and labor are saved,the problem of running water caused by a condition that a large number of mediums in the valve flow out in disassembling the self-sealing check valve of the nuclear power plant and maintenance personnel have no countermeasures is eliminated, and the risk of site pollution or the body surface contamination of personnel and the influence of continuous running water on system safety are reduced.

Description

technical field [0001] The invention belongs to the technical field of mechanical assembly, and in particular relates to a water-running prevention device and an operation method thereof when a self-sealing check valve is unloaded. Background technique [0002] Check valves are also called check valves, one-way valves, reverse flow valves, and back pressure valves. The check valve is used in the pipeline system. It is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline. It belongs to an automatic valve. media release. Check valves are also used on lines that supply auxiliary systems where the pressure may rise above system pressure. [0003] When the self-sealing check valve of a nuclear power plant is disassembled, there may be residual media in the system, or the problem of loose isolation boundaries, resulting in a continuous flow of residual media. These media are either radioactive or connected to the primary circuit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/10
CPCF16L55/10
Inventor 孙传福芮守龙孙永平姜华黄磊孙旭朱友学胡银龙郭光亮顾柏晓
Owner JIANGSU NUCLEAR POWER CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap