Maintenance-free high-pressure-difference gas-phase medium valve system

A high pressure difference, maintenance-free technology, applied in the direction of valve details, valve devices, valve housing structure, etc., can solve the problems of steam leakage, valve and pipe wall damage, etc., to reduce the medium flow rate, ensure stable operation, and avoid erosion Effect

Pending Publication Date: 2021-07-23
YICHUAN TECH CHENGDU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a maintenance-free high-pressure differential gas-phase medium valve system to solve the erosion of the valve and pipeline by the flowing medium during the start-stop process of the valve, avoid damage to the valve and pipe wall, and steam leakage

Method used

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  • Maintenance-free high-pressure-difference gas-phase medium valve system
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  • Maintenance-free high-pressure-difference gas-phase medium valve system

Examples

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Embodiment 1

[0019] See Figure 1 ~ 3 One-free high-pressure differential gas phase medium valve system, including high pressure difference valve 1, Raval tube 2, and shrink tube 3, characterized in that one end of the high pressure difference valve is fixedly mounted to mount the Lavar tube 2, the pull The Wal Tube 2 is fixedly mounted from one end of the high pressure difference valve 1, wherein the high pressure difference valve 1, the Lavar tube 2 and the shrink tube 3 are connected by the flange.

[0020] Depend on figure 2 It can be seen that the Lavar tube 2 is composed of a shrinkage section, a Raval tube balance section, a Raval tube diffusion section, and a Raval tube outlet, by calculating the determination of the Dalvar inlet diameter D. 1 , Inlet length L 1 , Throat diameter D 0 , Export diameter D 2 , Shrink angle θ 1 , Diffusion angle θ 2 , Balancing tube length L 0 And Raval outlet length L 2 .

[0021] Depend on image 3 It can be seen that the shrink tube 3 is composed of a shr...

Embodiment 2

[0024] Example 2, based on the above-described Embodiment 1, the various components of this design can be adjusted, thereby applies to high temperature high pressure differential gas phase media valves under different conditions of industrial production units.

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Abstract

The invention discloses a maintenance-free high-pressure-difference gas-phase medium valve system. The system comprises a high-pressure-difference valve, a Laval pipe and a shrinkage pipe and is characterized in that the Laval pipe is fixedly installed at one end of the high-pressure-difference valve, the shrinkage pipe is fixedly installed at the end, away from the high-pressure-difference valve, of the Laval pipe, the high-pressure-difference valve is a gas-phase medium drainage emptying valve and is a gas-phase medium valve, the gas-phase medium valve is particularly a high-pressure-difference valve with the drainage emptying function, the Laval pipe is composed of a Laval inlet section, a Laval shrinkage section, a Laval balance section, a Laval diffusion section and a Laval outlet section, and the shrinkage pipe is composed of a shrinkage pipe inlet section, a shrinkage pipe shrinkage section and a shrinkage pipe outlet section. The maintenance-free high-pressure-difference gas-phase medium valve system is simple and practical, the maintenance period is shortened, the cost is reduced, and stable operation of a power plant is guaranteed.

Description

Technical field [0001] The present invention is mainly directed to the technical field of high-temperature high pressure steam valve in thermal power plants, in particular, a maintenance-free high-pressure differential gas phase medium valve system. Background technique [0002] In the thermal power plant crew, many high-temperature high pressure valves are used, such as an emergency hydrophobic emptying valve, because the valve exit is emission, resulting in a large pressure difference in the valve, the valve is started after the high-pressure steam, so in the valve Open the instant, the medium flow rate is very large, resulting in a huge impact, and the high-speed fluid will quickly rinse the sealing surface, even decormed the valve body, resulting in a valve leak or valve newspaper. The leakage high temperature and high pressure medium will threaten on-site personnel and equipment, which will bring great security hazards to the operation of the unit, and the valve maintenance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L23/024F16L55/02F16K27/06
CPCF16K27/067F16L23/024F16L55/02
Inventor 黄霄霖洁田杰董玉泉
Owner YICHUAN TECH CHENGDU CO LTD
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