CN2833357Y - Gas safety device - Google Patents
Gas safety device Download PDFInfo
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- CN2833357Y CN2833357Y CN 200520039041 CN200520039041U CN2833357Y CN 2833357 Y CN2833357 Y CN 2833357Y CN 200520039041 CN200520039041 CN 200520039041 CN 200520039041 U CN200520039041 U CN 200520039041U CN 2833357 Y CN2833357 Y CN 2833357Y
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Abstract
The utility model discloses a combustion gas safety device, which comprises an electrical source, an electrical source adjusting circuit, a sensor testing circuit, a comparative oscillating circuit, a comparative delay circuit, an acoustic-optic driving part and an actuating mechanism, wherein the actuating mechanism is connected with a gas inlet valve in a combustion gas passage. The utility model is characterized in that the utility model also comprises a closing circuit and a closing and actuating reset circuit; an input end of the closing circuit is respectively connected with an output end of the electrical source and an output end of the comparative oscillating circuit; an input end of the closing and actuating reset circuit is connected with an output end of the closing circuit. The utility model has the advantages that the utility model can send out acoustic-optic alarm and automatically close the gas inlet valve simultaneously, continuous combustion gas leakage is stopped and the gas inlet valve is opened quickly by the reset circuit after the malfunction is cancelled.
Description
Technical field
The utility model belongs to the combustion gas protective device.
Background technology
It is existing a lot of that protective device is revealed in combustion gas on the market, though all have the automatic sound-light alarm system to some extent, can not be in sound and light alarm the automatic self-closing gas valve, therefore, when the unmanned state occurring, still do not have substantial role.
Summary of the invention
The utility model technical issues that need to address are to provide a kind of gas safety device, can be in sound and light alarm the automatic self-closing gas valve.
The technical solution of the utility model is as follows: comprise power supply, offer other each functional modules;
Power supply regulator circuit offers the sensor detection circuit suitable current;
Sensor detection circuit transfers detected gas concentration to the signal of telecommunication by gas sensor;
Relatively oscillating circuit compares the detected gas concentration signal of telecommunication and standard threshold values, and changes oscillator signal into;
Relatively delay circuit compares detected oscillator signal and time delayed signal, the untrue signal when suppressing starting state;
The acousto-optic drive part is carried out sound and light alarm according to the signal of telecommunication;
Executing agency links to each other with intake valve in the fuel gas path;
It is characterized in that also comprising shut-off circuit, connect the output of oscillating circuit, when oscillator signal proceeds to setting value, start, and the output shutdown signal;
Close and carry out and reset circuit, receive the shutdown signal of shut-off circuit output, drive executing agency, start corresponding actions, and after fault is eliminated, the alarm closed condition can be transformed into reset condition.
The beneficial effects of the utility model are, owing to increased shut-off circuit and closed executive circuit, thereby when sending sound and light alarm, can close intake valve automatically, prevent the continuation of combustion gas to reveal, and reset circuit can be opened air intake valve fast after the fault cancellation.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model;
Fig. 2 is a circuit diagram of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
As Fig. 1, gas safety device described in the utility model comprises power supply, power supply regulator circuit, sensor detection circuit, comparison oscillating circuit, comparison delay circuit, acousto-optic drive part and executing agency, also comprises shut-off circuit and closes execution and reset circuit.Power supply can offer the suitable voltage of sensing detection circuit through power supply regulator circuit.Power supply is also directly for relatively delay circuit, comparison oscillating circuit, acousto-optic drive circuit and shut-off circuit provide operating voltage.The sensing detection circuit can detect gas concentration by gas sensor, and transfer it to signal of telecommunication and export the comparison oscillating circuit to, relatively oscillating circuit compares this signal of telecommunication and standard threshold values, change oscillator signal then into and export acousto-optic drive circuit and shut-off circuit to, and relatively delay circuit compares detected oscillator signal and time delayed signal, untrue signal during with the inhibition starting state, when this moment, if oscillator signal reached the warning value of setting, carry out sound and light alarm, and what be connected with shut-off circuit closes executive circuit after receiving the output signal of shut-off circuit, by the executing agency that links to each other with intake valve, cut off fuel gas path automatically.Because of Fig. 1 should belong to gas circuit for electrical schematic diagram executing agency, and air path part belongs to mature technology, so do not draw in the drawings.
As Fig. 2, power supply regulator circuit, sensor detection circuit, comparison oscillating circuit, comparison delay circuit, acousto-optic drive part, shut-off circuit and closing carry out and reset circuit respectively by numeral 1,2,3,4,5,6,7 indications.
Shut-off circuit 6 comprises importation and output, the importation is made up of R23, V12, C9, R24, R25 and C10, the output connecting resistance R23 of comparator IC3 in the oscillating circuit, resistance R 23, diode V12, resistance R 25 and capacitor C 10 are connected successively, capacitor C 10 is ground connection again, resistance R 23 is formed buffer circuit with diode V12, stops to close the anti-stream of the signal of telecommunication and the interference oscillatory circuit.Draw parallel resistor R24 and capacitor C 9 respectively from the tie point of diode V12 negative pole and R25, the equal ground connection of the other end of resistance R 24 and capacitor C 9, C9 and R24 form filter circuit, the signal of telecommunication " impurity " is closed in elimination, R25 and C10 makeup time coefficient circuit, here be controlled at about 10 seconds, promptly shutdown signal works after 10 seconds, in order to avoid accidental a little combustion gas causes warning and just closes gas check valve.Output partly is made up of comparator IC2, C12, R29, V14, R26, V13, R22.The comparator positive input terminal links to each other with the threshold values that is composed in series by R22 and R26; negative input end connects the tie point of capacitor C 10 and resistance R 25; triode V14 grounded emitter; colelctor electrode connects to close and carries out and reset circuit; base stage is connected with resistance R 29, capacitor C 12 and the output of comparator IC2 successively; the tie point of anodal connecting resistance R29 of diode V13 and capacitor C 12, V14 shields to triode.The signal of telecommunication by oscillating circuit output, as mentioned above, in the C10 of this circuit, carry out " filling long-pending ", when this signal of telecommunication reached certain value, comparator IC2 is " counter-rotating " immediately, and the 7. pin of IC2 is electronegative potential, C12 is charged, thereby make the V14 conducting, (this moment also by R22 force IC2 5. the foot valve value descend 50%, make the shut-off circuit work more stable).After the V14 conducting, close current is finished the function of shut-off circuit by resistance R 27 starting relay JO adhesives.
Closing execution and reset circuit 7 is made up of capacitor C 11, resistance R 27, relay J 0, plug and socket JP1 and JP2, button AN, capacitor C 14, C15, microswitch KW1, KW2, motor M OTOR, wherein JP1, JP2 are three pin attachment plug and sockets, both couple together, but shut-off circuit is carried out and reset circuit is in conducting state with closing; When the V14 of shut-off circuit conducting, but resistance R 27, capacitor C 11 starting relay JO adhesives, and close current played metering function.C14, C15 are series in two groups of wire loops of motor M OTOR, the electric current of power supply output by JP1, JP2 1., 3. pin, microswitch KW1 (this moment, microswitch KW1 closed) transfer to motor, work to drive executing agency.Gas check valve is closed in executing agency, cuts off combustion gas, reaches security purpose.The function of the part that resets is finished by button AN, JP1, JP2, microswitch KW2, motor M OTOR, and after shut-off circuit was carried out, KW1 threw off, and KW2 promptly closes.In the time of need resetting, pin button AN, source current is by button AN, JP1, JP2, KW2, and motor M OTOR makes backward rotation, can open gas valve, recovers the gaseity of opening of burnt gas valve.
Sensor detection circuit 2 of the present utility model also includes sensor fault and detects indicating circuit, form by sensor MO-KR, comparator IC4, R30, R31, R32, RD1, R13, LED3, resistance R 30, R31 and semifixed resistor RD1 are composed in series a branch road, and MO-KR and resistance R 32 are composed in series another branch road, article two, branch road parallel connection, one end ground connection, the tie point of resistance R 30, R31 and resistance R 32 are connected to the positive-negative input end of comparator IC4 respectively, and the output of comparator, resistance R 13 and LED 3 are connected successively.When sensor damaged or lost efficacy, the current potential on the R32 just descended, when this current potential is lower than current potential on the R31,14 pin of comparator IC4 promptly are high potential, cause yellow indicator lamp LED3 flicker luminous, indication sensor damages or lost efficacy, and needs in time to change, and guarantees safety.
Claims (4)
1. a gas safety device comprises power supply, power supply regulator circuit, sensor detection circuit, comparison oscillating circuit, comparison delay circuit, acousto-optic drive part, executing agency, and executing agency links to each other with intake valve in the fuel gas path; It is characterized in that: also comprise shut-off circuit and close execution and reset circuit; The input of described shut-off circuit connects the output of power supply respectively and compares the output of oscillating circuit; Close the output of the input connection closed circuit of execution and reset circuit.
2. gas safety device as claimed in claim 1, it is characterized in that: described shut-off circuit comprises importation and output, the importation is made up of resistance (R23), diode (V12), electric capacity (C9), resistance (R24), resistance (R25) and electric capacity (C10), the output connecting resistance (R23) of the comparator in the oscillating circuit (IC3), resistance (R23), diode (V12), resistance (R25) and electric capacity (C10) are connected successively, electric capacity (C10) is ground connection again, and resistance (R23) is formed buffer circuit with diode (V12); Draw parallel resistor (R24) and electric capacity (C9) respectively from the tie point of diode (V12) negative pole and resistance (R25), the equal ground connection of the other end of resistance (R24) and electric capacity (C9), electric capacity (C9) and resistance (R24) are formed filter circuit, (R25) and (C10) the makeup time coefficient circuit; Output is partly by comparator (IC2), electric capacity (C12), resistance (R29), triode (V14), resistance (R26), diode (V13), resistance (R22) is formed, the comparator positive input terminal with link to each other with the threshold values that resistance (R26) is composed in series by resistance (R22), negative input end connects the tie point of electric capacity (C10) and resistance (R25), triode (V14) grounded collector, emitter stage connects to close and carries out and reset circuit, base stage successively with resistance (R29), electric capacity (C12) is connected with the output of comparator (IC2), the tie point of anodal connecting resistance of diode (V13) (R29) and electric capacity (C12).
3. gas safety device as claimed in claim 1 is characterized in that: described closing carried out and reset circuit comprises electric capacity (C11), resistance (R27), relay (J0), a pair of plugs and sockets (JP1, JP2), button (AN), electric capacity (C14), electric capacity (C15), microswitch (KW1, KW2) and motor; After electric capacity (C11) and resistance (R27) parallel connection, a termination power UDD, the coil-end of another relay termination (J0), the output of another termination shut-off circuit of relay (J0) coil; 1 pin of plug (JP1) connects power supply secondary coil one end, and 2 pin connect button (AN), and 3 pin are succeeded the normally opened contact of electrical equipment (J0), and the normally-closed contact of relay (J0) is connected with button (AN), and the armature contact 1 of relay (J0) connects the other end of power supply secondary coil; Electric capacity (C14), electric capacity (C15) are series in the electric motor loop, electric capacity (C14) negative terminal connects microswitch (KW2), electric capacity (C15) negative terminal connects microswitch (KW1), the line mid point of electric capacity (C14) and microswitch (KW2) connects a coil of motor, the line mid point of electric capacity (C15) and microswitch (KW1) connects another coil of motor, 1 pin of socket (JP2) connects the motor parallel coil-end, and 2 pin connect microswitch (KW2), and 3 pin connect microswitch (KW1).
4. gas safety device as claimed in claim 1, it is characterized in that: described sensor detection circuit also includes sensor fault and detects indicating circuit, this circuit is by sensor, comparator (IC4), resistance (R30), resistance (R31), resistance (R32), semifixed resistor (RD1), resistance (R13), light emitting diode (LED3) is formed, resistance (R30), resistance (R31) and resistance (RD1) are composed in series a branch road, and sensor and resistance (R32) are composed in series another branch road, article two, branch road parallel connection, one end ground connection, resistance (R30), the tie point of resistance (R31) and resistance (R32) cause the positive-negative input end of comparator (IC4), the output of comparator respectively, resistance (R13) and light emitting diode are connected successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520039041 CN2833357Y (en) | 2005-01-17 | 2005-01-17 | Gas safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520039041 CN2833357Y (en) | 2005-01-17 | 2005-01-17 | Gas safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2833357Y true CN2833357Y (en) | 2006-11-01 |
Family
ID=37197670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520039041 Expired - Fee Related CN2833357Y (en) | 2005-01-17 | 2005-01-17 | Gas safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2833357Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769542A (en) * | 2008-12-31 | 2010-07-07 | 大焜电子股份有限公司 | Quick stove fire energy-saving mode and device |
| CN103900124A (en) * | 2014-04-04 | 2014-07-02 | 广东美的厨房电器制造有限公司 | Gas leakage protection device, gas stove and gas leakage protection method |
| CN109509328A (en) * | 2018-12-28 | 2019-03-22 | 武汉工程大学 | A kind of combustion gas closing alarm set |
-
2005
- 2005-01-17 CN CN 200520039041 patent/CN2833357Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769542A (en) * | 2008-12-31 | 2010-07-07 | 大焜电子股份有限公司 | Quick stove fire energy-saving mode and device |
| CN103900124A (en) * | 2014-04-04 | 2014-07-02 | 广东美的厨房电器制造有限公司 | Gas leakage protection device, gas stove and gas leakage protection method |
| CN103900124B (en) * | 2014-04-04 | 2016-08-31 | 广东美的厨房电器制造有限公司 | Gas leakage protector, gas-cooker and gas leakage guard method |
| CN109509328A (en) * | 2018-12-28 | 2019-03-22 | 武汉工程大学 | A kind of combustion gas closing alarm set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061101 Termination date: 20100219 |