CN2349429Y

CN2349429Y - Leakage-proof alarm device for gas valve

Info

Publication number: CN2349429Y
Application number: CN 98221552
Authority: CN
Inventors: 梁炳耀; 孙四通; 梁炳健
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-19
Filing date: 1998-06-19
Publication date: 1999-11-17
Anticipated expiration: 2008-06-19

Abstract

The utility model relates to a leakage prevention alarm device for gas valves, belonging to a gas alarm device. The utility model is composed of a casing, a power supply, an alarm control circuit, and sensors. The sensors are composed of a temperature sensor and a displacement sensor. The temperature sensor is fixed on the flame zone of a range and is a bimetallic strip structure. The temperature sensor normally opens. The displacement sensor is fixed on a switch screw handle of a gas valve and is a mercury switch or reed switch structure. The utility model can prompt the user to close the gas valve in time, having the advanced prevention effect on gas leakage. The utility model can be used on gas ranges in families, restaurants, dining rooms, etc., having the advantages low cost, long service life, and high safety.

Description

Gas valve anti-leak reminiscences

The utility model relates to gas valve anti-leak reminiscences, belongs to the electronic gas alarm.A kind of gas valve that prevents in occasions such as family, restaurant, dining room of more clearly saying so leaks the gas valve anti-leak reminiscences of combustion gas.

The fuel gas alarm in past is made of gas sensitive element, power supply, caution control circuit and casing mostly.Gas sensitive element is a kind of gas security.When gas leakage, gas sensitive element reaches the caution control circuit with this signal, makes it to send sound, light is reported to the police, and can start ventilating fan simultaneously to discharge the combustion gas of leaking, to guarantee safety.But existing fuel gas alarm exists obviously not enough:

(1), passivity.Having only coal gas to leak could report to the police, and can not stop the generation of leaking in advance.

(2), fragility.Device is short working life, generally only is 1 year.

(3), the price height, the public is difficult to accept.

(4), technical sophistication.

(5), sensitivity is low, the impression time is long, have only leak and air in the concentration of toxic gas acquired a certain degree and just can send alarm signal.

(6), power consumption is big, the cost of use height.

The purpose of this utility model, just be to overcome above-mentioned shortcoming and defect, a kind of leakage that can initiatively prevent coal gas is provided, prevents trouble before it happens, long service life, price is low, is easy to the public accepts to popularize, and technology is comparatively simple and reliable, and power consumption is little, the gas valve anti-leak reminiscences that usage charges are cheap.

In order to achieve the above object, the utility model by casing, be installed in power supply in the casing with the caution control circuit, constitute with the sensor that links to each other of caution control circuit.Sensor has two, and polyphone is also contacted with power supply and caution control circuit more each other.A sensor is bimetallic temperature sensor or other temperature transducer.Another is a displacement transducer.Displacement transducer is fixed on the switch of gas valve with on the swing handle, and the angle displacement transducer in the time of can be with the turning handle switch valve is the electric switch signal.Temperature transducer is fixed in the flame area of gas cooker.When gas cooker was lighted work, flame made it the bimetallic strip heating to a lateral bending song, and normally-closed contact just disconnects.

Displacement transducer can be made up of shell and the mercury switch that is fixed in the shell.Mercury switch be the contact open in usual and with caution control circuit polyphone.Have elongated slot on the shell, so as to embedding and being fixed on the swing handle.Casing and the shell body formula that unites two into one, power supply and caution control circuit also are installed in the shell (that is casing).When valve closing, mercury switch disconnects.When turn swing handle 90 degree were opened valve, combustion gas entered gas cooker, and swing handle drive shell and mercury switch revolve and turn 90 degrees simultaneously, produce an angular displacement.Mercury switch is become uprightly by accumbency, and mercury becomes closed state with two contact short circuits.

Displacement transducer also can be by shell, be installed in the small magnet in the shell, the dry reed-pipe that has normally opened contact that is installed in the casing constitutes.Have on the shell so as to being fixed on the elongated slot on the swing handle.Casing is fixed on the fuel gas pipeline, and its position is positioned at when swing handle is threaded to the valve opening position, and the small magnet in the shell just can trigger dry reed-pipe, makes the normally opened contact closure.Dry reed-pipe and caution control circuit polyphone.

The caution control circuit is made of delay circuit and buzzer alarm circuit.

The utility model has adopted displacement sensor technology, temperature sensor technology, alarm technique etc. technically.Displacement transducer is used for measuring the switch of gas valve, and whether temperature transducer is used for measuring kitchen range in running order, logical relation between the two be " with ".Its know-why is as follows:

When valve closing, displacement transducer does not have relative displacement, does not have signal, can not trigger the work of caution control circuit.At this moment, though temperature transducer has signal, but can not trigger the work of caution control circuit separately.

When valve open, produce displacement, trigger delay circuit simultaneously.After the time-delay, displacement transducer sends signal, and at this moment have two kinds of possibilities: (1) fiery kitchen range is in closed condition, and temperature transducer sends starting signal, triggers the caution control circuit simultaneously with displacement signal, reminds the user to open fiery kitchen range or throttle down; (2) fiery kitchen range is in the state of lighting, and temperature transducer can not send signal, though produced displacement signal, the caution control circuit can not be triggered.

When fiery kitchen range when lighting recovering state to closed condition, temperature transducer sends signal, at this moment also exist two kinds may: (1) valve is closed, and displacement transducer can not send signal, and the caution control circuit can not be triggered; (2) valve is not closed, and displacement transducer sends signal, with temperature transducer common trigger caution control circuit, sounds a buzzer, and reminds the user to close main valve.Delay circuit can avoid valve once opening buzzing.

The utility model gas sensitive element that working life is not short, price is high, thus cost reduced, prolonged the life-span, reduced power consumption simultaneously.

Task of the present utility model comes to this and finishes.

The utlity model has following advantage and effect:

(1), to preventing that gas leakage has the effect of leading prevention.Promptly in time remind user's throttle down, prevent trouble before it happens, but not wait until when coal gas has leaked and report to the police again.

(2), cost is low, safe and reliable, long service life.Life-span has prolonged 4～10 times more in the past.

(3), stopped the following contingent leakage of pipeline of Gas Company's main valve.

(4), power consumption is few, cost of use is low.

The utility model can be widely used in the gas range and piped gas in family, restaurant, the dining room.

Below in conjunction with embodiment and accompanying drawing the utility model is done further explanation.

Fig. 1 is the utility model embodiment 1 a structural representation.

Fig. 2 is embodiment 2 a structural representation.

Fig. 3 is embodiment 1 and embodiment's 2 circuit theory diagrams.

Illustrated in figures 1 and 2, embodiment 1 and embodiment 2 are made of casing 1, power supply 2, caution control circuit 3, bimetallic temperature sensor 4 and displacement transducer.Temperature transducer 4 is fixed in the flame area of gas cooker 5.Embodiment illustrated in fig. 11 displacement transducer is made up of shell 7, mercury switch 8.Having elongated slot 9 on the shell 7 is fixed on the swing handle 10 of valve 11 so as to setting-in.Casing 1 and shell 7 bodyization that united two into one.The position of swing handle 10 and shell 7 when dotted line represents that valve 11 is opened among the figure.The contact of mercury switch 8 is short circuit.Embodiment illustrated in fig. 22 displacement transducer is made of shell 7, small magnet 6, the dry reed-pipe 13 that is installed in the casing 1.Have on the shell 7 on the swing handle 10 that elongated slot 9 is inlaid in valve 11.Casing 1 is fixed on the fuel gas pipeline 12, just can trigger dry reed-pipe 13 with small magnet 6.

Shown in Figure 3, embodiment 1 and embodiment 2 are made of power supply 2, temperature transducer 4, displacement transducer 14, the caution control circuit 3 be made up of delay circuit 15 and buzzer alarm circuit 16.Buzzer alarm circuit 16 by buzzer 17 and MX-01 type sound intergrated circuit 18 form.

Embodiment 1 and embodiment 2 can prevent gas leakage, prolong 5 times working life more in the past.Cost is low, and power consumption is economized, and can extensively should have on piped gas, gas range.

Claims

1, a kind of gas valve anti-leak reminiscences, it by casing, be installed in power supply in the casing with the caution control circuit, constituted with the sensor that links to each other of caution control circuit, it is characterized in that said sensor has two, be connected in again behind the polyphone each other in power supply and the caution control circuit, one is bimetallic temperature sensor or other temperature transducer, its two for the switch that is fixed on gas valve with on the swing handle and the angle displacement transducer can be with the turning handle switch valve time be the displacement transducer of electric switch signal, temperature transducer is fixed in the flame area of gas cooker.

2, according to the described gas valve anti-leak of claim 1 reminiscences, it is characterized in that said displacement transducer is made up of shell and the mercury switch that is fixed in the shell, mercury switch be the contact open in usual and with caution control circuit polyphone, have on the shell so as to being fixed on the elongated slot on the swing handle, casing and the shell body that unites two into one, power supply and caution control circuit also are installed in shell that is the casing.

3, according to the described gas valve anti-leak of claim 1 reminiscences, it is characterized in that said displacement transducer by shell, be installed in the small magnet in the shell, the dry reed-pipe that has normally opened contact that is installed in the casing constitutes, have on the shell so as to being fixed on the elongated slot on the swing handle, casing is fixed on when swing handle is threaded to the enable possition small magnet in the shell and just can triggers on the fuel gas pipeline of normally opened contact of dry reed-pipe, dry reed-pipe and caution control circuit polyphone.

4, according to claim 1 or 2 described gas valve anti-leak reminiscences, it is characterized in that said caution control circuit is made of delay circuit and buzzer alarm circuit, buzzer alarm circuit by buzzer and sound intergrated circuit form.

5, according to the described gas valve anti-leak of claim 3 reminiscences, it is characterized in that said caution control circuit is made of delay circuit and buzzer alarm circuit, buzzer alarm circuit by buzzer and sound intergrated circuit form.