CN201434128Y

CN201434128Y - Self-supporting gas safety valve

Info

Publication number: CN201434128Y
Application number: CN2009201095395U
Authority: CN
Inventors: 张清海; 董民超
Original assignee: BEIJING BORIMING ENERGY SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: SHANDONG BRIGHTMAN ENERGY TECHNOLOGY CO., LTD.
Priority date: 2009-07-01
Filing date: 2009-07-01
Publication date: 2010-03-31
Anticipated expiration: 2019-07-01

Abstract

A self-supporting gas safety device belongs to the field of gas valve manufacture and comprises a large clamping spring, a temperature-sensing device, a push rod, a connection sleeve, a return spring,a small clamping spring, an O-shaped ring, an inner connection sleeve, a gasket, a press buckle, a handle, steel balls, an outer connection sleeve, a sealing spring, a connecting rod, a valve body, agas guide hole and the like, wherein the press buckle is mounted at the upper part of the handle; the temperature-sensing device is mounted at the center of the handle; the push rod is mounted at thecenter of the lower end of the temperature-sensing device; and the outer part of the lower part of the handle is connected with the projecting part of the outer connection sleeve in a sliding manner.When the ambient temperature rises up to the expansion temperature of a thermal bulb, the thermal bulb expands to push downwards the push rod and the connection sleeve together, the return spring isretracted under the pressure of the connection sleeve, meanwhile, the steel balls clamped between the outer connection sleeve and the handle move towards the interior of the handle, the sealing springstretches, the handle and the connecting rod move downwards under the tensile force of the sealing spring at the same time, and then the gasket is driven by the connecting rod to seal the gas guide hole to cut off the gas supply.

Description

The self-erecting type safety valves for gas

Affiliated technical field:

The utility model relates to a kind of gas combustion apparatus, especially can have under the situation of high temperature abnormality, need not the self-erecting type safety valves for gas that power supply can cut off fuel gas supply voluntarily, and it belongs to the manufacturing of gas valve.

Technical background:

Combustion gas comprises rock gas, coal gas and liquefied petroleum gas (LPG) etc., it is the novel energy that develops over past ten years, the a large amount of use of combustion gas is the performance of social progress and urban modernization, it has reduced the degree of municipal pollution widely, also bring great convenience and efficient to people, but meanwhile also many disasters have been caused to society, harm that gas leakage causes and day sharp increase, the loss that the harm that causes because of the combustion gas leakage causes to people's lives and properties is an immeasurable problem, it is compared with the fire that fire coal takes place, and has emergentness more, and is dangerous more because of being difficult for discovering.In recent years at this type of problem, many enterprises have released and much have been used to the gas leakage and the Fire alarm installation of reporting to the police, really played certain effect, but this class warning device in the market, great majority can only be reported to the police and can not further be got rid of hidden danger, there is the product of some imports can close combustion gas in the while of reporting to the police, but be difficult to popularize because of price is higher eventually, the utility model provides a kind of power supply that need not, when the gas-fired equipment ambient temperature raises unusually, can cut off the device of fuel gas supply automatically.

Summary of the invention:

The purpose of this utility model provides a kind of easy for installation, use simple self-erecting type safety valves for gas, when gas-fired equipment surrounding environment generation abnormal high temperature, can not cut off fuel gas supply voluntarily and avoid bigger disaster, prevent to endanger the automatic blow off valve that spreads by electric power.

For reaching the purpose of this utility model, the technological scheme that the utility model uses is that the self-erecting type safety valves for gas generally is made up of jump ring, snap-fastener, handle, push rod, connecting sleeve, Returnning spring, connecting rod etc.It is characterized in that: snap-fastener is equipped with on the top at handle, temperature sensing device is equipped with in central authorities at handle, the upper end of temperature sensing device links to each other with the bottom of snap-fastener, push rod is equipped with in the central authorities of the lower end of temperature sensing device, the bottom of push rod links to each other with the center upper portion of connecting rod, lower central at connecting sleeve is equipped with Returnning spring, the lower end of Returnning spring links to each other with the central authorities of the bottom of handle, around the handle bottom, have some apertures, steel ball is equipped with in inside at aperture, steel ball can move in the aperture of handle bottom freely, steel ball one end that is contained in the aperture of handle bottom links to each other with the connecting sleeve that is contained in handle, at its lower end central authorities, the outer connecting sleeve projection of the other end and handle outer links to each other, the outside of handle bottom and outside the projection of connecting sleeve be slidingly connected, make handle be free to move up and down freely in the connecting sleeve outside, the upper-end surface of the lower end of connecting sleeve projection and Packing spring links to each other outside, Packing spring is installed in the inside of the outside outer connecting sleeve upper end of handle, at its lower end, the lower end of the projection of upper end and outer connecting sleeve links to each other, the end of the outside of the bottom of lower end and handle is along linking to each other, central authorities in the handle bottom link to each other with connecting rod, interior connecting sleeve is equipped with in the bottom of the lower end of connecting sleeve outside, the central interior of interior connecting sleeve is passed through by connecting rod, in the outside of connecting rod and the inside of interior connecting sleeve the o type circle that seals usefulness is housed, at the sealing gasket that is equipped with of the bottom of connecting rod, the periphery of the bottom of outer connecting sleeve links to each other with screw socket with valve body.

Temperature sensing device in the self-erecting type safety valves for gas can use thermometer bulb, memory alloy or other temperature sensing material, can use so long as the material of deformation takes place under the effect of temperature, and its effect is identical.

The beneficial effects of the utility model are detecting under the unusual situation about raising of indoor fuel gas equipment ambient temperature, need not power supply and cut off combustion gas automatically by external force, and are simple in structure.

Description of drawings

Fig. 1: side of the present utility model is cutd open schematic diagram

Among the figure: 1 big jump ring, 2 thermometer bulbs, 3 push rods, 4 connecting sleeves, 5 Returnning springs, 6 little jump rings, 7O type circle, 8 interior connecting sleeves, 9 sealing gaskets, 10 snap-fasteners, 11 handles, 12 steel balls, 13 outer connecting sleeves, 14 Packing springs, 15 connecting rods, 16 valve bodies, 17 gas ports.

Embodiment

At first connecting rod (15) greatly head-up is contained in handle (11) inside holes, make its microcephaly be exposed at the outside, cavity of handle (11) bottom, then Returnning spring (5) is put into handle (11) inside, the top that is connected with the top of connecting rod (15), its underpart is put in the bottom draw-in groove of the inner connecting sleeve (4) of handle (11), the push rod (3) of thermometer bulb (2) is put into the push rod (3) that handle (11) inside makes thermometer bulb (2) bottom down to be inserted in the draw-in groove on connecting sleeve (4) top, the draw-in groove of snap-fastener (10) is buckled in the top of thermometer bulb (2) down, then big jump ring (1) is stuck in the inner draw-in groove of snap-fastener (10) upper handle (11), steel ball (12) is placed in the outside cavity of handle (11), outer connecting sleeve (13) is enclosed within the bottom of handle (11), Packing spring (14) is contained in the outside that connects the inner handle (11) of overcoat (13), little jump ring (6) is stuck in the draw-in groove in handle (11) outside below the Packing spring (14), O type circle (7) is contained in the joint of interior connecting sleeve (8) and outer connecting sleeve (13), interior connecting sleeve (8) and outer connecting sleeve (13) corresponding position are spun firmly, sealing gasket (9) is enclosed within on the connecting rod (15) that is exposed at below the interior connecting sleeve (8), at last the corresponding position of outer connecting sleeve (13) with valve body (16) is spun firmly.So far the self-erecting type safety valves for gas that can be controlled by temperature is all assembled and is finished.

During use, at first suction port is connected by correct direction with the air outlet, simultaneously bat-handle switch is mentioned, sealing gasket (9) makes valve be in aeration status away from gas port (17), thermometer bulb (13) expands push rod (3) and connecting sleeve (4) is pushed away downwards together when ambient temperature rises the expansion temperature that reaches thermometer bulb (2), the pressure that Returnning spring (5) is subjected to connecting sleeve (4) shrinks, the steel ball (12) that is stuck in simultaneously between outer connecting sleeve (13) and the handle (11) sidles in handle (11), Packing spring stretches (14), the pulling force that handle (11) connecting rod (15) is subjected to Packing spring (14) walks downward simultaneously, sealing gasket (9) under the drive of connecting rod (15) with gas port (17) thus shut and reach the purpose of blocking airflow.Facts have proved that the temperature that this kind method is produced can control automatic-closing valve, reliable operation not only, and also cheap.

Claims

1, the self-erecting type safety valves for gas is characterized in that: snap-fastener is equipped with on the top at handle, temperature sensing device is equipped with in central authorities at handle, the upper end of temperature sensing device links to each other with the bottom of snap-fastener, push rod is equipped with in the central authorities of the lower end of temperature sensing device, the bottom of push rod links to each other with the center upper portion of connecting rod, lower central at connecting sleeve is equipped with Returnning spring, the lower end of Returnning spring links to each other with the central authorities of the bottom of handle, around the handle bottom, have some apertures, steel ball is equipped with in inside at aperture, steel ball can move in the aperture of handle bottom freely, steel ball one end that is contained in the aperture of handle bottom links to each other with the connecting sleeve that is contained in handle, at its lower end central authorities, the outer connecting sleeve projection of the other end and handle outer links to each other, the outside of handle bottom and outside the projection of connecting sleeve be slidingly connected, make handle be free to move up and down freely in the connecting sleeve outside, the upper-end surface of the lower end of connecting sleeve projection and Packing spring links to each other outside, Packing spring is installed in the inside of the outside outer connecting sleeve upper end of handle, at its lower end, the lower end of the projection of upper end and outer connecting sleeve links to each other, the end of the outside of the bottom of lower end and handle is along linking to each other, central authorities in the handle bottom link to each other with connecting rod, interior connecting sleeve is equipped with in the bottom of the lower end of connecting sleeve outside, the central interior of interior connecting sleeve is passed through by connecting rod, in the outside of connecting rod and the inside of interior connecting sleeve the o type circle that seals usefulness is housed, at the sealing gasket that is equipped with of the bottom of connecting rod, the periphery of the bottom of outer connecting sleeve links to each other with screw socket with valve body.

2, self-erecting type safety valves for gas according to claim 1 is characterized in that: the memory alloy as temperature sensing device can be thermometer bulb, bimetallic strip.