CN2591458Y - Gaseous fuel leakage alarming cut-off device - Google Patents

Abstract

The utility model discloses a gas-leakage alarm and cut-off device. The structure is simple, the control is flexible and convenient, the utility model can be provided with electricity and can be provided without electricity, and the adaptability is strong. When the stove fire is extinguished, or the set time is achieved, the utility model is automatically closed, and the gas source is cut off, which is safe. The utility model is composed of a valve assembly and a thermal sensing electromagnetic control assembly. The utility model is characterized in that the valve assembly comprises a valve body 6; an inner cavity of the valve body is divided into a gas inlet cavity 9 and a gas outlet cavity 17 by a sealing gas valve 8; the gas outlet cavity 17 is communicated with the gas inlet cavity 9; the interior of the gas inlet cavity 9 is sealed with a sensor 10 which is connected with a heat sensitive head; the upper end of the interior of the gas outlet cavity 17 is provided with a buffer 19; the upper end of the valve body is connected with a sealing cover; a centre hole of the sealing cover is provided with a compressed body 3; one end of the compression rod is a supporting point; a middle contact point of the compressed rod 2 is connected with the upper end surface of the compressed body. The utility model is provided with a timing alarm device, and the timing alarm device normally performs the function no matter whether the electricity is provided or not. When the gas is not used, the flexible pipe on the back of the gas meter and the gas range all have no gas, and thus the utility model safely uses gas. The utility model is suitable for the safe use of various new stoves and old stoves, gas pipelines and liquefied gas storage tanks.

Description

The gas leakage alarm shearing device

Affiliated field

But the utility model relates to the shearing device of gas anti-leak, specifically is used for the shearing device of gas appliance.

Background technology

At present, that installs and uses on the combustible gas pipeline prevents that the safety valve and the warning device that leak are of a great variety, but in use has many unsatisfactory hidden danger.Just see on its structure, all have many problems as the reliability of mechanism, electric property and security.A kind of is to utilize the torsion drive spool of torsion spring to rotate the ball valve of realizing valve-off, in the use because the required torsion of general ball valve is all very big, ball valve easily gets rusty and causes rust dead simultaneously, be difficult to finish with torsion spring, and the time of using is longer slightly, the torsion of torsion spring reduces to influence valve-off gradually, thereby reduces the reliability and the security of valve.Another kind be on the said structure basis improved do not utilize torsion spring safety valve, though its structure has improvement, but when motor drive mechanism is closed, coil must be switched on for a long time, coil and electromagnet just must be done very greatly and easy burn-out like this, thereby can not guarantee to use safely in the fuel gas pipeline.Except that last two kinds of examples, occurred also in the recent period that structure is identical therewith, but the safety valve of the electromagnet horizontally set of control section, this electromagnet can reduced volume, but because magnet must horizontally set, thereby cumulative volume does not reduce, and the electromagnet of horizontally set is under the long term of spring force, easily make electromagnet and its coil contact position produce pit, when coil obtains an electric pulse, can not reliably electromagnet be pulled out, will influence accurately warning like this and dangerous situation occurs.In a word, the above-mentioned prior art that provides, and the most of combustible gas leakage alarm self-closing devices that use at present all need adopt electricity to control the magnet control part, if temporary interruption or circuit break down etc., said apparatus is with ineffective.Therefore, the technology that this class electricity consumption is controlled exists the scope of application restricted, and limitation is arranged.

Technical scheme

The purpose of this utility model is to disclose a kind of gas leakage alarm shearing device.Improve at the problem that prior art exists, the design provide a kind of simple in structure, control flexible, there is electric power or not all can, and timing means is arranged, and adaptability is strong, the cooking stove fray-out of flame, perhaps setting-up time one arrives, just can close automatically, cut off source of the gas, safe and reliable combustible gas leakage automatic alarm shearing device.

The utility model is achieved by following manner:

The utility model is made up of valve module and thermal sensing electromagnetic control assembly, it is characterized in that: described valve module comprises a valve body 6 that has air inlet and gas outlet, the outlet chamber 17 that valve body 6 inner chambers are divided into inlet chamber 9 and are communicated with it by sealing air valve 8, sensor 10 of encapsulation in inlet chamber 9, sensor 10 and the induction reinforcement line both positive and negative polarity 14 that is installed on the thermal head 24 at burner place, 15 join, the feeler lever top of sensor 10 is to sealing air valve 8 lower surfaces, the feeler lever of sensor 10 is equipped with the back-moving spring 16 that feeler lever and sealing air valve are separated outward, buffer 19 is equipped with in 17 upper ends in outlet chamber, a tee T push rod 7 is installed in the buffer 19 central concave holes, the extension bar of push rod reaches sealing air valve 8 upper surfaces, a buffer spring 18 and 5 respectively are housed in the upper surface of push rod and the buffer outer groove, at seal cover of valve body upper end crimping, the seal cover centre bore is equipped with compression body 3, compression body 3 through sealing gasket 4 can promote buffer 19 move down and open the sealing air valve 8, compression spring 21 is housed between compression body 3 and the seal cover, a constrictor 2, with an end is the strong point, and its arm of force intermediate contact is crimped on the compression body upper surface.

The utility model preferred plan is: the arm of force end points at constrictor 2 is connected with backguy 11, and backguy 11 is connected with the arbor 13 of micro machine 12, and micro machine 12 is installed in the same box body 1 with the shearing device valve body; Be serially connected with timer 25 between the positive pole of sensor 10 and the thermal head 24 anodal lines; A transformation rectification circuit 22, its output connect current reversal circuit 27 and delay circuit 23 respectively, and the delay circuit positive and negative terminal is connected with the positive and negative terminal of sensor 10 respectively, and the positive and negative terminal reversal connection of current reversal circuit 27 is to the negative anode of sensor.Two signal ends and the sensor two ends of an alarm 26 join.

Description of drawings

Fig. 1 is the utility model example structure figure:

Fig. 2 is the utility model embodiment electrical schematic diagram.

Embodiment

Accompanying drawings, gas leakage alarm shearing device comprise reports to the police and cuts off two big funtion parts, and wherein cut-off parts comprises that valve body 6 and interior spool part and thermal sensing Electromagnetic Control thereof are partly and the compression running part of valve body 6 upper ends.The upper and lower outlet chamber 17 that is divided into inlet chamber 9 and is communicated with by sealing air valve 8 of valve body 6 inner chambers with it, be respectively equipped with spool part and thermal sensing Electromagnetic Control part in outlet chamber 17 and the inlet chamber 9, and valve body 6 is installed in the box body 1 that has micro machine 12 by screw, as shown in Figure 1, the spool part can be controlled the push rod 7 of opening sealing air valve 8 by buffer 19 in the outlet chamber 17 that is arranged at valve body 6 and front end thereof, the buffer spring 5 and 18 that is provided with respectively inside and outside the buffer 19.Wherein buffer 19 upper surfaces and interior buffer spring 5 thereof withstand on the sealing gasket 4 of compression running part.The compression running part is made up of the sealing gasket 4 of compression body 3 and the constrictor 2 that is provided with respectively up and down and compression spring 21 and compression body 3 lower ends, as shown in the figure; Thermal sensing Electromagnetic Control partial design adopts the thermocouple of thermo-sensitive material manufacturing and the sensor 10 of magnetic valve and electromagnet formation thereof, induction reinforcement line both positive and negative polarity 14 and 15 in this sensor 10 is connected on and is installed on gas-cooker burning and is heated on the thermocouple both positive and negative polarity of suitable position, and the magnetic valve end socket of sensor 10 promptly seals in the inlet chamber 9 that air valve 8 then is installed on valve body 6.The Alerts Off part, as shown in Figure 2.External 220V alternating current is the 12V direct current through transformation rectification 220V transformation, output signal under the inductance effect, produce current reversal circuit 27 through midget relay, reach sensor 10, make the field supply break-in, under back-moving spring 16 effects, push sealing air valve 8 open simultaneously, close source of the gas.During each the energising, 12V direct current after transformation, under delay circuit 23 effects, keep 12 seconds time delayed signals, at this moment light gas-cooker flame, thermal head 24 is heated, conduct to sensor 10 along induction reinforcement line both positive and negative polarity 14 and 15 and produce electromagnetic force, hold sealing air valve 8, keep normally catching fire user mode.When flame-out, thermal head 24 loses thermal source, and temperature progressively reduces, and sensor 10 thermoelectric inductions are also along with termination, and when thermal head 24 is lower than 60 when spending, sensor 10 loses electromagnetic force, pushes sealing air valve 8 open simultaneously under yellow 16 effects of the bullet that resets and closes source of the gas.And the two ends of timer 25 form the loop with sensor 10 and thermocouple 24 respectively, and limiting time one is to then forming short circuit, and sealing air valve 8 loses electromagnetic force, and homing under yellow 16 effects of the bullet that resets is closed source of the gas simultaneously.

The utility model is to adopt the import thermo-sensitive material, through science valve design body structure etc., utilize the sensing effect of conversion rationally of mechanical energy, heat energy and electromagnetic energy, augment secondary by magnetic force again and strengthen galvanomagnetic-effect and produce enough active forces and finish valve closes and cut off overall process.In the practical application, present technique is arranged on combustion gas downbeam pipeline endoporus with end socket.Therefore, air pressure is big more close tight more, no matter there is electric power or not all can realize round-the-clock source of the gas insurance, as long as gas combustion range flameout is then less than cutting off source of the gas in 12 seconds automatically.At this moment, though the opening conduits main valve, perhaps kitchen range valve opening, perhaps flexible pipe comes off, and gas pipeline is in closed state all the time, does not have spillage risk fully.When using combustion gas, the source of the gas control sealing air valve 8 of opening this gas leakage alarm shearing device by the external force effect could normal ignition.Otherwise combustion gas just can not flow to cooking stove, and this has just thoroughly eliminated the gas leak poisoning from source of the gas, even the hidden danger of blast on fire.In addition, present technique also is provided with timer 25 at suitable position, and as shown in Figure 2, the user can set up the time on their own according to wish, and the time one extinguishes to stove then, closes source of the gas simultaneously automatically.The utility model is not only applicable to all and adopts natural gas, liquefied petroleum gas and piped gas to do the user and the unit of the energy, and is applicable to the new and old cooking stove of family expenses of existing Any shape, needn't change, and can install and use.

The concrete course of work of the present utility model is: when acting on normal pressure one on the constrictor 2 electricity being arranged by micro machine 12 work, arbor 13 rotates, do not affect backguy 11 by external force when having electricity, dual mode all can produce the normal pressure that acts on the constrictor 2 and be passed to compression body 3 drive buffer springs 5, thereby drive push rod 7 and back down sealing air valve 8, form inlet chamber 9 and outlet chamber 17 unimpeded states.Cooking stove igniting this moment is positioned at the other thermal head 24 of bocca and is heated, and is transformed into enough electromagnetic force along reinforcement line both positive and negative polarity 14 and 15 conduction sensitization sensors 10 and holds sealing air valve 8, keeps combustion gas to be in normal operating condition.When combustion gas was flame-out, sealing air valve 8 set back under sensor 10 ineffective power and back-moving spring 16 effects, and cut-out source of the gas, cooking stove stop working.

The utility model is compared with existing technology, have simple in structure, easy to install, Dependable performance, the life-span is long, price is low, timing means is arranged, and no matter there is electric power or not can both be normal Play a role, when without combustion gas, the flexible pipe behind the gas meter and gas-cooker be none some combustion gas all, Thereby guarantee safe and reliable suitable combustion gas, be fit to various new and old cooking stove, gas pipeline and liquefaction The safe handling of gas tank, the characteristics such as extensive market.

Claims (6)

1. a gas leakage alarm shearing device is made up of valve module and thermal sensing electromagnetic control assembly, it is characterized in that:

Described valve component comprises a valve body (6) that has air inlet and gas outlet, the outlet chamber (17) that valve body (6) inner chamber is divided into inlet chamber (9) and is communicated with it by sealing air valve (8), an encapsulation sensor (10) in inlet chamber (9), sensor (10) and the induction reinforcement line both positive and negative polarity (14) that is installed on the thermal head (24) at burner place, (15) join, the feeler lever top of sensor (10) is to sealing air valve (8) lower surface, the feeler lever of sensor (10) is equipped with the back-moving spring (16) that feeler lever and sealing air valve are separated outward, buffer (19) is equipped with in (17) upper end in outlet chamber, a tee T push rod (7) is installed in the central concave hole of buffer (19), the extension bar of push rod reaches sealing air valve (8) upper surface, a buffer spring (18) and (5) respectively are housed in the upper surface of push rod and the buffer outer groove, at seal cover of valve body upper end crimping, the seal cover centre bore is equipped with compression body (3), compression body (3) through sealing gasket (4) can promote buffer (19) move down and open the sealing air valve (8), compression spring (21) is housed between compression body (8) and the seal cover, a constrictor (2), with an end is the strong point, and its arm of force intermediate contact is crimped on the compression body upper surface.

2. gas leakage alarm shearing device according to claim 1 is characterized in that: the arm of force end points at constrictor (2) is connected with backguy (11).

3. gas leakage alarm shearing device according to claim 1 is characterized in that: described backguy (11) is connected with the arbor (13) of micro machine (12), and micro machine (12) is installed in the same box body (1) with the shearing device valve body;

4. gas leakage alarm shearing device according to claim 1 is characterized in that: be serially connected with timer (25) between the positive pole of sensor (10) and the anodal line of thermal head (24);

5. gas leakage alarm shearing device according to claim 1, it is characterized in that: a transformation rectification circuit (22), its output connects current reversal circuit (27) and delay circuit (23) respectively, the delay circuit positive and negative terminal is connected with the positive and negative terminal of sensor (10) respectively, and the positive and negative terminal reversal connection of current reversal circuit (27) is to the negative anode of sensor.

6. gas leakage alarm shearing device according to claim 1 is characterized in that: two signal ends and the sensor two ends of an alarm (26) join.

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