CN2359548Y

CN2359548Y - Automatic closed valve with alarm when gas leakage

Info

Publication number: CN2359548Y
Application number: CN 99234438
Authority: CN
Inventors: 高东旗; 宋福根
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-12
Filing date: 1999-03-12
Publication date: 2000-01-19
Anticipated expiration: 2009-03-12

Abstract

The utility model relates to an automatic closed valve with an alarm when gas leaks, which is composed of a valve seat 1 and a valve body 5, wherein, a closed magnetic circuit which is compose of a supporting frame 10, an electromagnetic coil 6, magnetic steel 6, a limiting block 7 and armature iron 11 is arranged in the valve body 5. A spring 3 is positioned between a fixed plate 12 and a pressure pad 16. After gas leaks, automatic acoustic and optical alarm can be realized, and a gas source can be closed through time delay. As long as accidents are eliminated, a lifting button 8 can be carried to be conducted with a gas path again.

Description

The gas leakage alarm self closing stop valve

The utility model relates to a kind of capable of automatic alarm and valve of closing automatically when being used for gas leakage.

Use facility such as gas range, the gas water-heater etc. of combustion gas leakage accident to occur through regular meeting.For example flame is gone out by wind or the interior liquid spill of pot is put situations such as flame, pneumatic tube aging cracking, valve are tight, gas meter leakage out by water, can cause combustion gas to leak.Gently then cause trouble or facility is keeped in repair, changes to the user, heavy then be easy to initiation fire accident and personal injury.So the gas leakage problem is the task of top priority that needs solution.At present, existing gas leakage alarm device on the market, though it can in time remind the user to handle as early as possible, this is a kind of passive practice, can not control from source of the gas.The like product of Korea S is to drive the ball valve half-twist and close source of the gas, complex structure, bulky after being slowed down by an actuating motor.And the self closing stop valve flow of Germany is too little, and valve pressure is also little, and is higher to the bleed pressure stability requirement, and inapplicable bleed pressure changes air supply system greatly.The self closing stop valve flow of Japan is big, oppositely withstand voltage also high, but electromagnetic valve structure has big defective, and whole electromagnet and coil all are positioned in the middle of the combustion gas, and structure is more complicated, cost is also high.

The purpose of this utility model is exactly in order to solve the described deficiency of background technique, and a kind of simple in structure, superior performance is provided, and is capable of automatic alarm and close the device of source of the gas automatically when the concentration of leaking combustion gas reaches certain value.

The purpose of this utility model reaches by following technical solution:

This gas leakage alarm self closing stop valve comprises valve body, valve seat, barrier film is between valve body and valve seat, electromagnetic coil and magnet steel in the valve body are fixed on the support, and the two ends of armature are connected with shadoof respectively and connecting rod, pressure pad are connected as a single entity by connecting rod and armature, and spring is between pressure pad and fixed plate.Barrier film cooperates with the pressure pad clamping.Connecting rod and pressure pad are the ball pivot clamping.The alarm of this gas leakage alarm comprises a shell, buzzer P and tutorial light L, in warning circuit, by integrated package G ₂, G ₃And resistance R ₅, capacitor C ₂Constituted and passed through output voltage U ₀Make the delay circuit of electromagnetic coil deferred action.

Fig. 1: structural representation of the present utility model.

Fig. 2: warning circuit schematic diagram.

Now in conjunction with the accompanying drawings the utility model is done a detailed description.

As shown in Figure 1, this device mainly is made of valve seat 1 and valve body 5 two-part, and is divided into two independently cavitys by barrier film 2.Wherein, be provided with suction port A, air outlet B and valve C in valve seat 1, the three constitutes an air-flow path.Then be provided with a support 10 in valve body 5, electromagnetic coil 6, magnet steel 4, armature 11, limiting stopper 7 all are positioned at support 10, and constitute the electromagnetic valve structure with closed magnetic conductive loop.The two ends of armature 11 are connected with shadoof 9 and the connecting rod 13 that band is carried button 8 respectively, and pressure pad 16 is fixed on again on the connecting rod 13.The bottom of support 10 has a fixed plate 12, and spring 3 is installed between fixed plate 12 and the pressure pad 16.Limiting stopper 7 is fixing with support 10, and shadoof 9 passes limiting stopper 7 fixedlys connected with armature 11.Said magnet steel 4 is made for permanent-magnet material, has higher magnetic intensity, and lead 15 penetrates valve body 5 by interface 14 and is connected with electromagnetic coil 6.Said barrier film 2 is by making as flexible materials such as rubber, and its periphery is crimped between valve body 5 and the valve seat 1, realizes sealing fully.The middle part of barrier film 2 is close on the pressure pad 16, and corresponding with valve C, and its diameter is greater than the diameter of valve C.

Alarm circuit schematic diagram shown in Fig. 2, the filament of gas transducer G are following in working order, and temperature raises when meeting inflammable gas, and internal resistance descends, and makes triode thyrister VT ₁The dividing potential drop of base stage on potentiometer VR changes and conducting, the relay J action.By integrated package G ₂, G ₃And resistance R ₅, capacitor C ₂The monostable circuit of forming enters temporary stable state.Simultaneously, by integrated package G ₇, G ₈, G ₉The multi-vibrator of forming gets electric, makes signaling lamp L ₂Send with light, acoustic alarm signal frequently, till the relay J dead electricity with buzzer P.As integrated package G ₂, G ₃The monostable circuit of forming, is not removed if report to the police, then by integrated package G when coming back to stable state yet through time-delay ₅, G ₆Second monostable circuit of forming begins to enter temporary stable state, triode VT ₂Conducting, output voltage U ₀Be added to electromagnetic coil 6 two ends, solenoid valve is an auto-closing.

This valve has been made of the solenoid valve of closed magnetic conductive loop support 10, limiting stopper 7, armature 11, magnet steel 4.Generally, valve is in open mode, and the magnetic field suction armature 11 of magnet steel 4 is in limiting stopper 7 places and since this moment magnet steel 4 magnetic force greater than the elastic force of spring 3, spring 3 is in compressive state always, and the connecting rod 13 pulling pressure pads 16 and the barrier film 2 that are connected with armature 11 stop at the dead point, top.When if air supply system leakage occurs and reaches the concentration of regulation, sensor G promptly moves and makes warning circuit start the concurrent visual alarm of speaking, and gives electromagnetic coil 6 energisings behind the time-delay certain hour.At this moment, electromagnetic coil 6 produce one with the opposite magnetic field of magnet steel 6 directions, this magnetic field cancellation or weaken the magnetic force of magnet steel 4 greatly, and make synthetic magnetic force less than spring 3 power, armature 11 is promptly pulled to the below by spring force, and compress barrier film 2 on the valve C of valve seat 1 by connecting rod 13 and pressure pad 16, realize closing automatically the function of source of the gas.In case armature 11 is in the dead center position, below, though electromagnetic coil 6 outages, since the effect of spring 3 at this moment, the suction that makes progress that downward elastic force produces greater than magnet steel 6, and valve is in closed condition always.Have only manual pull-up to carry button 8, by shadoof 9 pulling armature 11 upwards, this valve just can reopen air feed.

The utility model has overcome the deficiency that exists in the background technology, uses Solenoid Valve Technology, and design is closed Reason, simple in structure, energy automatic delay function source of the gas after the warning, dependable performance, the unit of being applicable to, family Use in the multiple air supply systems such as natural gas, liquefied petroleum gas, artificial coal gas in the front yard.

Claims

1, a kind of gas leakage alarm self closing stop valve, comprise valve body (5), valve seat (1), barrier film (2) is positioned between valve body (5) and the valve seat (1), it is characterized in that electromagnetic coil (6) and magnet steel (4) in the valve body (5) are fixed on the support (10), the two ends of armature (11) are connected with shadoof (9) respectively and connecting rod (13), pressure pad (16) are connected as a single entity by connecting rod (13) and armature (11), and spring (3) is positioned between pressure pad (16) and the fixed plate (12).

2, self closing stop valve as claimed in claim 1 is characterized in that barrier film (2) cooperates with pressure pad (16) clamping.

3, self closing stop valve as claimed in claim 1 is characterized in that connecting rod (13) and pressure pad (16) are the ball pivot clamping.

4, the supporting alarm of the described self closing stop valve of a kind of and claim 1, it comprises a shell, buzzer P and tutorial light L, it is characterized in that in warning circuit, by integrated package G ₂, G ₃And resistance R ₅, capacitor C ₂Constituted and passed through output voltage U ₀Make the delay circuit of electromagnetic coil (6) deferred action.