CN2570562Y

CN2570562Y - Safety gas valve

Info

Publication number: CN2570562Y
Application number: CN 02236812
Authority: CN
Inventors: 舒国平
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-29
Filing date: 2002-05-29
Publication date: 2003-09-03
Anticipated expiration: 2012-05-29

Abstract

The utility model discloses a safety gas valve. The utility model is characterized in that a permanent magnet is arranged in a valve cover; a gas nozzle is arranged on the valve cover; the utility model uses pressure and magnetic force to control the functions of the opening, the closing, the depressurization and the pressure regulation of the valve; The utility model has the advantages of small size, simple structure and low cost; under the linkage of a gas pressure controller, safety is high, and operation is convenient.

Description

Safe gas valve

The utility model relates to a kind of safe gas valve.

As everyone knows, because the distinctive physicochemical property of combustion gas (comprising natural gas, artificial coal gas and liquefied petroleum gas (LPG)) is easy to cause poisoning, blast and fire during leakage, caused great harm and loss for people's lives and properties.And existing general reduction valve has only the effect of decompression, pressure regulation, does not have the function of recloser, and each break-make source of the gas all will be operated artificially.In a single day because people's forgetful property and idea of leaving things to chance are not often in time closed source of the gas after use, will stay hidden danger to safety like this, and gas leakage occurs, just very easily cause various gas accidentses, lack safety guarantee.A kind of reduction valve is arranged in addition, is on the basis of original reduction valve, increases the valve of an independent switch combustion gas, and this valve is controlled by mechanical wind-up timer, arrive set the required time after valve closing.The shortcoming of this kind valve is that timer and valve are connected as a single entity, and so just makes operation very inconvenient.Particularly concerning bottled combustion gas user, for consideration to the kitchen cleaning, general all gas cylinder is placed below the platen of kitchen cabinet, even also load onto the cabinet door, can't accurately set the required time in use, and because it is a mechanical type, just in case can not in time send corresponding alarm signal when gas leakage occurring, therefore throttle down all can't reach the requirement of gas safe rapidly.Also having some reduction valve with solenoid-operated switch, is before the valve of original reduction valve or behind the valve, electromagnetic valve of independent increase.Volume is big, complex structure reaches the shortcomings such as requirement of explosion proof height to electromagnet but the gas valve of this kind structure exists.

The purpose of the utility model is: provide enough air pressures of a kind of energy and magnetic force to combine and control, make the mechanism of decompressor in the existing reduction valve have the safe gas valve of switch and decompression, voltage regulation function simultaneously, this gas valve is realized closely controlling automatically by gas pressure regulator, can when timing end or gas leakage, promptly make gas lockout valve, send corresponding acoustooptic alarm signal simultaneously.

In order to reach above-mentioned purpose, the technical solution of the utility model is:

1, blocks the spiracle on the valve gap of existing gas valve and the adjusting mouth on top;

2, a valve is set on valve gap, the one end is connected with gas pressure regulator by tracheae;

3, a permanent magnet is set in valve gap.

Described valve can form with the disposable casting of valve gap, and effect is by valve pressurized air to be injected into air cavity in the valve gap, reaches the purpose of opening valve and decompression, pressure regulation.

Described permanent magnet places the interior centre of valve gap, utilizes its magnetic force to reach the purpose of throttle down.

Described gas pressure regulator is to be lumped together also by electronic equipment and air bag group to produce compressed-air actuated device.

Above-mentioned safe gas valve, owing to utilized the magnetic force and the action of air pressure of permanent magnet, make original mechanism of only playing decompression have the function of switch, pressure regulation simultaneously, has the advantage that volume is little, simple in structure, cost is low, under the interlock of gas pressure regulator, can send corresponding acoustooptic alarm signal simultaneously regularly finishing or automatic-closing valve during gas leakage.Make Security higher, also convenient in the operation.

Below in conjunction with drawings and embodiments the utility model is further described.

Fig. 1 is the combination block diagram of the utility model safe gas valve;

Fig. 2 is the cross-sectional schematic of gas valve of the present utility model.

In Fig. 1, air pressure unit U and timer T, air-sensitive warning circuit S form gas pressure regulator.Air pressure unit U is connected with gas valve W by tracheae.Before the use, the valve of gas valve W is in closed condition, when needs use, timer T is set at the required time, at this moment, air pressure unit U work also produces certain pressurized air, is transported to by tracheae that air cavity makes gas valve W have combustion gas to output to on the gas utensil valve open in the valve gap of gas valve W.When timing end or gas leakage, air-sensitive warning circuit S sends corresponding acoustooptic alarm signal rapidly, and simultaneously, the air pressure that air pressure unit U removes air cavity in the valve gap also makes valve closing under the magnetic force of permanent magnet.

Fig. 2 shows the cross-sectional schematic of gas valve W.Dotted line is the internals of prior art reduction valve with the bottom among the figure, and arrow is depicted as the direction of flowing through of combustion gas, and intake valve port 3 is arranged on bubble-tight housing, air outlet 8.Its working principle is roughly: metal platen 6 original pressure spring (in order to avoid obscuring, original pressure spring is not shown among the figure〉the elastic force effect under intake valve port 3 is opened fully, high-pressure gas enters in the relief chamber 5 after intake valve port 3 current limlitings.When the air pressure in the relief chamber 5 during greater than the elastic force of former pressure spring, force sealing air film 7 upwards to be heaved, drive the A end pull-up of catch bar 2 simultaneously with pressure regulation bar 4, the B end then moves down, intake resistance is strengthened, air inflow reduces, and causes the pressure in the relief chamber 5 also to reduce, when the pressure in the relief chamber 5 during less than the pressure of former pressure spring, metal platen 6, sealing air film 7 drive catch bars 2 move down the A end of pressure regulation bar 4, the B end then moves up, and intake resistance reduces, and air inflow is strengthened, the result, pressure in the relief chamber 5 strengthens again, reaches balance until the elastic force with former pressure spring, makes and is exported the stable combustion gas of low pressure in the relief chamber 5.

The above part of dotted line is the main member of gas valve W of the present utility model among Fig. 2.Center fixed has permanent magnet 14,13rd in valve gap 10, positioning seat, and the 12nd, retaining spring, 11 is the valve of valve gap.

The working procedure of gas valve W is: before the use, because air pressure unit U do not work, do not have pressure in the air cavity 9 of valve gap 10, slug 15 is close together with the bottom surface of positioning seat 13 under the magnetic attraction of permanent magnet 14, and at this moment, intake valve port 3 is in closed condition.When needs use combustion gas, pressurized air is input in the air cavity 9 of valve gap 10 by valve 11, sealing air film 7 is under the air pressure effect, force slug 15 to break away from the magnetic force of permanent magnet 14, driving catch bar 2 simultaneously moves down the A of pressure regulation bar 4 end, then the B end moves up, and intake valve port 3 is opened.At this moment, high-pressure gas enters in the relief chamber 5 after intake valve port 3 current limlitings, and air inflow barometric pressure more is big more.When the pressure in the relief chamber 5 during greater than the pressure in the air cavity 9, force sealing air film 7 upwards to be heaved, drive the A end pull-up of catch bar 2 simultaneously with pressure regulation bar 4, the B end then moves down, the air inflow of intake valve port 3 is reduced, and air inflow is more little, and the pressure in the relief chamber 5 is also more little; When the pressure in the relief chamber 5 during less than the pressure in the air cavity 9, forcing sealing air film 7 to drive catch bar 2 again again moves down the A of pressure regulation bar 4 end, then the B end moves up again, air inflow is increased, pressure in the relief chamber 5 increases again, and so forth, make the pressure in the relief chamber 5 reach balance, have stable low-pressure fuel gas to export in the relief chamber 5 with pressure in the air cavity 9.

When timing end or gas leakage, gas pressure regulator can send the acoustooptic alarm signal rapidly, and the pressure in the releasing air cavity 9, simultaneously, the sealing air film is moved up, and drive the A end pull-up of catch bar 2 with pressure regulation bar 4, then the B end is closed intake valve port 3 downwards, does not have combustion gas output in the relief chamber 5.

Claims

1, a kind of safe gas valve, comprise by gas pressure regulator and gas valve and forming, it is characterized in that: comprise timer T, air-sensitive warning circuit S and air pressure unit U and interconnect by the valve on tracheae and the valve gap at interior gas pressure regulator, center fixed has a permanent magnet in the valve gap.

2, according to the safe gas valve of claim 1, it is characterized in that: valve is fastened on the top of valve gap, and pressurized air enters the valve gap inner chamber through valve can be with valve open.

3, according to the safe gas valve of claim 1 or 2, it is characterized in that: permanent magnet will seal slug on the air film by magnetic force and pick up and make valve closing.