CN2596036Y

CN2596036Y - High pressure shutoff valve used for gas combustion

Info

Publication number: CN2596036Y
Application number: CN 02292128
Authority: CN
Inventors: 李键; 王正木; 刘国庆
Original assignee: Shenyang Liming Aero Engine Group Co Ltd
Current assignee: Shenyang Liming Aero Engine Group Co Ltd
Priority date: 2002-12-27
Filing date: 2002-12-27
Publication date: 2003-12-31
Anticipated expiration: 2012-12-27

Abstract

The utility model relates to a high pressure stop valve used for a combustion engine, which is suitable for stopping the high pressure of the combustion engine. The valve comprises an end cap, a sealed gasket, a valve core, a spring, a valve seat and a valve body, wherein, the cap is connected with the valve body as a whole via screw threads, and the sealed gasket is arranged for sealing the cap and the valve body. The valve seat with a medium discharge hole is fixed in the valve body, and the valve seat is provided with a hole for positioning a valve core hole and a lug boss for stopping the valve core. A slide fit is formed between the valve core and the valve body, and a spring is arranged between the valve core and the valve seat. The high pressure stop valve has the advantages of simple structure, low cost, favorable sealing performance, no leakage, reliable operation and stable pressure.

Description

A kind ofly fire the high-pressure stop valve that machine is used

Technical field

The utility model belongs to a kind of high-pressure stop valve that the combustion machine is used.

Background technique

The general high-pressure stop valve that adopts of the high-pressure system of gas turbine, complex structure is easily revealed shortcomings such as pressure transient.

The model utility content

The purpose of this utility model is in order to solve the technical problem of present existence, a kind of combustion machine high-pressure stop valve to be provided.

High-pressure stop valve of the present utility model is by end cap, sealing gasket, spool, spring, valve seat and valve body are formed, end cap is integral by being threaded with valve body, seal with sealing gasket in the middle of it, the valve seat that has the media discharge hole is fixed on lower end in the valve body, spool is arranged in the valve body, insert in the valve seat orifice spool lower end, and all for being slidingly matched, valve seat is provided with the spool bore that spool is played the role of positioning and the boss of stop spool, be provided with spring in the middle of spool and the valve seat, high-pressure stop valve is connected with using parts by the outside thread on the end cap, be connected with discharging place of medium by the screw thread on the valve body, enter the pressure chamber of spool and end cap formation by the import on the end cap when working medium, and on the profile on the top of spool, produce certain active force, when active force during less than the reaction force of spring, spool remains static, radial hole and media discharge mouth valve seat on of working medium by spool bottom enters outlet and emits, when pressure medium rises to predetermined pressure, spring is compressed, spool moves down, the radial hole of spool bottom enters the spool chamber of valve seat, radial hole is blocked, therefore working medium is cut off, and when spool moves to the valve seat stop position, spring will can not be compressed again, to prevent spring failure, discharge when being implemented in medium low pressure, close discharge orifice during high pressure, the function that stops to discharge.

High-pressure stop valve of the present utility model has following advantage:

1, simple in structure, low cost of manufacture;

2, good seal is not revealed, reliable operation, pressure stability.

Description of drawings

Accompanying drawing is the utility model structural representation.

Among the figure: 1 end cap, 2 sealing gaskets, 3 spools, 4 springs, 5 valve seats, 6 valve bodies.

Embodiment

This stop valve is by end cap 1, sealing gasket 2, spool 3, spring 4, valve seat 5 and valve body 6 are formed, concrete working procedure is as follows: constitute pressure chamber when working medium enters spool 3 by the import on the end cap 1 with end cap 1, and on the profile on the top of spool 3, produce certain active force, when this active force during less than the reaction force of spring 4, spool 3 remains static, working medium enters and emits by the radial hole of spool 3 bottoms and the media discharge mouth on the valve seat 5, when pressure medium increases to predetermined pressure, spring 4 is compressed, spool 3 moves down, the radial hole of spool 3 bottoms enters the spool chamber of valve seat 5 at this moment, and radial hole is blocked, and working medium is cut off, pressure raises, produce high pressure, when spool 3 moves to valve seat 5 stop positions, spring 4 will can not be compressed again, to prevent spring failure, discharge when being implemented in medium low pressure, close discharge orifice during high pressure, the function that stops to discharge.

Claims

1, a kind ofly fires the high-pressure stop valve that machine is used, comprise end cap, sealing gasket, spool, spring, valve seat and valve body, it is characterized in that end cap is integral by being threaded with valve body, seal with sealing gasket in the middle of it, the valve seat that has the media discharge hole is fixed on lower end in the valve body, and spool is arranged in the valve body, and insert in the valve seat orifice spool lower end, and all, be provided with spring in the middle of spool and the valve seat for being slidingly matched.

2, high-pressure stop valve as claimed in claim 1 is characterized by and is that described valve seat is provided with the spool bore that spool is played the role of positioning and the boss of stop spool.

3, high-pressure stop valve as claimed in claim 1 is characterized in that described sealing gasket makes for the red copper material.