CN2763657Y

CN2763657Y - Gas emergency cut off valve

Info

Publication number: CN2763657Y
Application number: CN 200420086802
Authority: CN
Inventors: 孙成蒙
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-27
Filing date: 2004-07-27
Publication date: 2006-03-08
Anticipated expiration: 2014-07-27

Abstract

The utility model discloses a gas emergency cutoff valve device. A holder (5) is arranged at the upper end of a valve body (4), and a built-in thermal sensing element (8) is adjusted depending on screws (7). The lower end of the valve body (4) is connected with a valve cap (2), and a spring (1) and a valve core (3) are arranged in the valve body (4). The top end of the valve core (3) is in contact with the thermal sensing element (8), and the lower end of the valve core is supported by the compression spring (1). An O-shaped silicone rubber seal ring (6) of a guide rod outer sleeve of the valve core (3) is in contact with an inner cavity of the valve body (4). When the environment temperature is above the temperature set by the thermal sensing element (8), the thermal sensing element (8) automatically breaks, the spring (1) rapidly pushes the valve core (3), and the valve is closed. The cutoff valve is especially suitable for automatically cutting off burning gas under the condition of emergency situations, such as open flame generated in civil families, etc., and the safe purpose can be achieved.

Description

The gas emergency cut-off valve

Technical field the utility model cut-off valve, especially in civilian family room naked light takes place, the valving of the combustion gas emergency cut-off that uses under the combustion gas ambient temperature abnormal temperature rise situation is a kind of device about in particular cases allowing combustion gas cut off.

Background technique is present, the switch of known civilian family burning coal gas, rock gas, liquid gas, entirely with manually-operated gate is installed, the manual manual operation switch, run into special circumstances, the naked light burning takes place on every side, manually can't cut off source of the gas near operated valve, tend to leakage burning, strengthen bigger loss because of combustion gas.

Summary of the invention the utility model has overcome deficiency of the prior art, provides a kind of and need not manual operation entirely with the induction ambient temperature, and full automatic close cuts off source of the gas, and fire-resistant burning, the gas emergency cut-off valve that does not leak.

The utility model adopts following technical proposal:

The utility model mainly is made up of valve body, spool, valve gap, spring, retainer, thermal sensible element etc.The retainer lower end connects valve body, internal fixation thermal sensible element; Valve body lower end is connected with valve gap, and built-in spring and spool, spool run through the valve body center, and the upper end contacts with thermal sensible element, and the lower end is supported by spring; Spool guide rod overcoat O type silicone rubber O-ring contacts with body cavity; During use, valve body two ends NPT sealing thread is connected with pipeline, utilizes retainer screw adjusted thermal sensible element, promote spool, compression lower end spring causes valve core sealed cover to break away from valve body sealing surface, valve opening.When urgent, rise to the thermal sensible element set temperature value because of ambient temperature is undesired, thermal sensible element breaks voluntarily, pushes back spool under the reaction force of pressure spring rapidly, makes its sealing surface and valve body sealing surface be in contact with one another valve closing.Because of valve body sealing surface and the little tapering of valve core sealed cover employing all steel metal, the large size contact is fitted mutually and is sealed.Valve closing is after high temperature is burnt, and contained spring is ineffective, and its sealing pair still can keep tightly fitting not breaking away from, and does not leak.

Since adopt such scheme, the no filler of whole cut-off valve sealing, and valve body, valve gap are once assembled sealing, close the no leakage point in back; When urgent, with the induced environment temperature, need not manual operation entirely, cut off source of the gas voluntarily, high temperature is burnt and is not leaked good sealing effect.

Appended drawings is a kind of canonical schema of structure of the present utility model

Among the figure: pressure spring 1 valve gap 2 spools 3 valve bodies 4 retainers 5 silicone rubber O-rings 6 adjusting screw 7 thermal sensible elements 8

Below in conjunction with accompanying drawing the utility model is further described

Embodiment retainer 5 is installed on valve body 4 upper ends, and interior dress thermal sensible element 8 is regulated by screw 7; Valve body 4 lower ends are connected with valve gap 2, interior dress pressure spring 1 and spool 3; Spool 3 runs through valve body 4 centers, and the top contacts with thermal sensible element 8, and the pressured spring 1 that contracts in lower end supports; Spool 3 guide rod overcoat O type silicone rubber O-rings 6 contact with valve body 4 inner chambers.During use, valve body 4 two ends NPT sealing threads are connected with pipeline, utilize screw 7 to regulate thermal sensible element 8 and promote spool 3, compression lower end supported spring 1 causes spool 3 sealing surfaces to separate with valve body 4 sealing surfaces.Valve opening.When urgent, ambient temperature is undesired when rising to thermal sensible element 8 and establishing temperature value, and thermal sensible element 8 breaks voluntarily, promotes spool 3 under the reaction force of pressure spring 1 rapidly, makes its sealing surface and valve body 4 sealing surfaces be in contact with one another applying, valve closing.

Claims

1, the gas emergency cut-off valve is made up of valve body (4), valve gap (2), spool (3), spring (1), retainer (5), thermal sensible element (8) etc., it is characterized in that retainer (5) is installed on valve body (4) upper end, interior dress thermal sensible element (8); Valve body (4) lower end is connected with valve gap (2), interior dress pressure spring (1) and spool (3); Spool guide rod overcoat O type silicone rubber O-ring (6) contacts with valve body (4) inner chamber.

2, gas emergency cut-off valve as claimed in claim 1 is characterized in that the interior thermal sensible element of described retainer (5) (8), adopts screw (7) to regulate, and promotes spool (3), compression spool (3) lower end supported spring (1).

3, gas emergency cut-off valve as claimed in claim 1 is characterized in that thermal sensible element (8) breaks voluntarily when ambient temperature abnormal temperature rise during to thermal sensible element (8) set temperature value, and lower end spring (1) pushes back spool (3).

4, gas emergency cut-off valve as claimed in claim 1 is characterized in that the described locking sealing of cutting out, and sealing pair is to adopt the little tapering of all steel metal, and large size is fitted and contacted.