CN204087442U - A kind of gas leak detector that can automatically close - Google Patents
A kind of gas leak detector that can automatically close Download PDFInfo
- Publication number
- CN204087442U CN204087442U CN201420384077.9U CN201420384077U CN204087442U CN 204087442 U CN204087442 U CN 204087442U CN 201420384077 U CN201420384077 U CN 201420384077U CN 204087442 U CN204087442 U CN 204087442U
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- CN
- China
- Prior art keywords
- gas leak
- controller
- leak detector
- cut out
- waveform generator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Emergency Alarm Devices (AREA)
Abstract
The utility model discloses a kind of gas leak detector that can automatically close, relate to alarm field.It comprises sensor (1), amplifier (2), comparer (3), controller (4), waveform generator (6), loudspeaker (7), relay (8) and solenoid valve (9), the temperature transition of gas range flame becomes analog current signal to amplify through described amplifier (2) by described sensor (1), compare through described comparer (3) and nominal voltage signal, described controller (4) is given again by the signal transmission after relatively, described controller (4) carries out judging that rear generation alerting signal exports waveform generator (6) and relay (8) respectively to, described waveform generator (6) produces square-wave signal to described loudspeaker (7), described loudspeaker (7) sounding, described relay (8) is connected, thus coal gas is closed in described solenoid valve (9) work.This gas leak detector can automatically cut out coal gas, effectively prevent gas leak, is mainly used in family and prevents gas leak.
Description
Technical field
The utility model relates to alarm field, particularly a kind of gas leak detector that can automatically close.
Background technology
Now, coal gas user gets more and more, and potential safety hazard also just increases.If gas stove or gas range are when heating up water or boil other liquid foods, because boiling water or liquid spill or wind makes its stove fire extinguish, but a lot of people is due to carelessness, forget and use coal gas, or leave because of busy, now coal gas can escape in a large number and easily cause fire, blast, or the generation of the security incident such as gas poisoning.
Therefore, be necessary to provide a kind of gas leak detector that can automatically close to overcome above-mentioned defect.
Utility model content
For above-mentioned prior art, the technical problems to be solved in the utility model is to provide one and automatically can closes coal gas, effectively prevent gas leak, minimizing accident from occurring, cheap, stable performance, highly sensitive, the safe and reliable gas leak detector that can automatically close.
In order to solve the problems of the technologies described above, the utility model provides a kind of gas leak detector that can automatically close, and it comprises sensor, amplifier, comparer, controller, waveform generator, loudspeaker, relay and solenoid valve; The temperature transition of gas range flame becomes analog current signal to amplify through described amplifier by described sensor, compare through described comparer and nominal voltage signal, described controller is given again by the signal transmission after relatively, described controller carries out judging that rear generation alerting signal exports waveform generator and relay respectively to, described waveform generator produces square-wave signal makes described loudspeaker give the alarm, and described relay connects and makes described electromagnetic valve work cut out coal gas.
Further improvement of the utility model is, described sensor adopts temperature sensor, is specially armoured thermocouple.
Further improvement of the utility model is, described amplifier and comparer share LM324 four-operational amplifier.
Further improvement of the utility model is, described controller adopts analog switch, is specially CD4066 tetra-reversible controller.
Further improvement of the utility model is, described waveform generator adopts NE555 time-base integrated circuit.
Further improvement of the utility model is, the described gas leak detector that can automatically cut out also comprises indicator light circuit, described indicator light circuit comprises LED light emitting diode DS, resistance R5, the negative electrode of described LED light emitting diode DS is connected to the pin 3 of described controller, the anode of described LED light emitting diode DS is connected to one end of described resistance R5, and the other end of described resistance R5 is connected to power end VCC, the pin 8 of controller, pin 14 simultaneously.
Compared to prior art, the utility model adopts sensor to become analog current signal to amplify through described amplifier the temperature transition of gas range flame, compare through described comparer and nominal voltage signal, described controller is given again by the signal transmission after relatively, produce alerting signal after described controller judges, thus described loudspeaker is given the alarm, described electromagnetic valve work closes coal gas, effectively can prevent gas leak like this, minimizing accident occurs.
Accompanying drawing explanation
Fig. 1 is principle assumption diagram of the present utility model;
Fig. 2 is circuit diagram of the present utility model.
In figure, each component names is as follows:
1-sensor;
2-amplifier;
3-comparer;
4-controller;
41-analog switch one
42-analog switch two
43-analog switch three
44-analog switch four
5-indicator light circuit;
6-waveform generator;
7-loudspeaker;
8-relay;
9-solenoid valve.
Embodiment
Illustrate below in conjunction with accompanying drawing and embodiment further illustrates the utility model, element numbers similar in accompanying drawing represents similar element.
As shown in Figure 1, the gas leak detector that can automatically cut out of the present utility model, it comprises sensor 1, amplifier 2, comparer 3, controller 4, waveform generator 6, loudspeaker 7, relay 8 and solenoid valve 9.Described controller 4 comprises analog switch 1, analog switch 2 42, analog switch 3 43 and analog switch 4 44.
Particularly, described sensor 1 adopts temperature sensor, is specially armoured thermocouple.Described amplifier 2 and comparer 3 share LM324 four-operational amplifier.Described controller 4 adopts analog switch, is specially CD4066 tetra-reversible controller.Described waveform generator 6 adopts NE555 time-base integrated circuit.
Preferably, the gas leak detector that can automatically cut out of the present utility model also comprises indicator light circuit 5, and it comprises LED light emitting diode DS, resistance R5.
Particularly, as shown in Figure 2, the gas leak detector that can automatically cut out of the present utility model comprises armoured thermocouple, LM324 four-operational amplifier U1, CD4066 tetra-reversible controller U2, NE555 time-base integrated circuit, LED light emitting diode DS, loudspeaker LS1, relay 8, solenoid valve 9, power supply BAT1, power supply BAT2, resistance R0 to R7, electric capacity C2, electric capacity C3, electric capacity C7, switch S 1, switch S 2, switch S 3, the pin 2 of described armoured thermocouple is connected to ground, the pin 1 of described armoured thermocouple is connected to one end of resistance R0, the other end of described resistance R0 is connected to one end of resistance R2 and the pin 2 of LM324 four-operational amplifier U1 simultaneously, the other end of described resistance R2 is connected to pin 1 and the pin 9 of described LM324 four-operational amplifier U1 simultaneously, one end of described resistance R1 is connected to the pin 3 of described LM324 four-operational amplifier U1, the other end of described resistance R1 is connected to the pin 11 of described LM324 four-operational amplifier U1 simultaneously, ground end, one end of resistance R4, the other end of described resistance R4 is connected to the pin 10 of described LM324 four-operational amplifier U1 simultaneously, one end of resistance R3, the other end of described resistance R3 is connected to the pin 4 of described LM324 four-operational amplifier U1 simultaneously, power end VCC, the pin 8 of described LM324 four-operational amplifier U1 is connected to the pin 5 of described CD4066 tetra-reversible controller U2 simultaneously, pin 6, pin 12, the pin 4 of described CD4066 tetra-reversible controller U2, pin 7 is held with being connected to, the pin 10 of described CD4066 tetra-reversible controller U2 is connected to power end VCC, the negative electrode of described LED light emitting diode DS is connected to the pin 3 of described CD4066 tetra-reversible controller U2, the anode of described LED light emitting diode DS is connected to one end of described resistance R5, the other end of described resistance R5 is connected to power end VCC simultaneously, the pin 8 of described CD4066 tetra-reversible controller U2, pin 14, the pin 11 of described CD4066 tetra-reversible controller U2 is connected to the pin 5 of described relay 8, the pin 4 of described relay 8 is held with being connected to, the pin 3 of described relay 8 is connected to one end of described switch S 3, the other end of described switch S 3 is connected to the positive terminal of described power supply BAT2, the negative pole end of described power supply BAT2 is connected to the negative pole end of described solenoid valve 9, the positive terminal of described solenoid valve 9 is connected to the pin 2 of described relay 8, the pin 9 of described CD4066 tetra-reversible controller U2 is connected to one end of described switch S 2, the other end of described switch S 2 is connected to the pin 4 of NE555 time-base integrated circuit simultaneously, pin 8, one end of resistance R6, the other end of described resistance R6 is connected to the pin 7 of described NE555 time-base integrated circuit simultaneously, one end of resistance R7, the other end of described resistance R7 is connected to the pin 2 of described NE555 time-base integrated circuit simultaneously, pin 6, one end of electric capacity C2, the other end of described electric capacity C2 is connected to the pin 1 of described NE555 time-base integrated circuit simultaneously, ground end, one end of electric capacity C3, one end of loudspeaker LS1, the other end of described electric capacity C3 is connected to the pin 5 of described NE555 time-base integrated circuit, one end of described loudspeaker LS1 is connected to one end of described electric capacity C7, the other end of described electric capacity C7 is connected to the pin 3 of described NE555 time-base integrated circuit, the negative pole end of described power supply BAT1 is connected to one end of described switch S 1, the other end of described switch S 1 is connected to ground, the positive terminal of described power supply BAT1 is connected to power end VCC.
Principle of work of the present utility model utilizes described sensor 1 temperature transition of gas range flame to be become analog current signal to amplify through described amplifier 2, compare with nominal voltage signal through described comparer 3, described controller 4 is given again by the signal transmission after relatively, described controller 4 carries out judging that rear generation alerting signal exports waveform generator 6 and relay 8 respectively to, described waveform generator 6 produces square-wave signal makes described loudspeaker 7 give the alarm, and described relay 8 connects and makes the work of described solenoid valve 9 cut out coal gas.
As shown in Figure 2, first determine that the switch S 3 of the gas leak detector that can automatically close of the present utility model is closed, then gas range coal fire is opened, then power switch S1 is opened, loudspeaker switch S2 closes, and now LED light emitting diode DS is bright, proves that power switch is opened.Afterwards armoured thermocouple probe is reached in gas burner, after general tens seconds, LED light emitting diode DS has gone out, the voltage difference produced up to 20mV is now described, the analog switch 1 of all controllers 4, analog switch 2 42, analog switch 3 43 and analog switch 4 44 are all closed, so time can be by, loudspeaker 7 and solenoid valve 9 switch opens.If just by solenoid valve 9 switch opens before LED light emitting diode DS does not also go out, so solenoid valve can obtain voltage and work, thus makes coal gas also can close under normal conditions.
After people leaves, if coal fire is when heating up water or boil other liquid foods, because boiling water or liquid escape or wind makes its coal fire extinguish, now coal fire sudden temperature drop, add coal gas and continue outer spray, make armoured thermocouple pop one's head in cool very soon, electric potential difference reduces gradually, through amplification ratio comparatively after, export high level, DS is bright for LED light emitting diode, and loudspeaker 7 is reported to the police, and simultaneously solenoid valve 9 is energized and cuts out rapidly by coal gas.
The utility model adopts sensor 1 temperature transition of gas range flame to be become analog current signal to amplify through described amplifier 2, compare with nominal voltage signal through described comparer 3, described controller 4 is given again by the signal transmission after relatively, alerting signal is produced after described controller 4 judges, thus described loudspeaker 7 is given the alarm, described solenoid valve 9 works and cuts out coal gas, effectively can prevent gas leak like this, and minimizing accident occurs.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (6)
1. the gas leak detector can automatically cut out, is characterized in that: comprise sensor (1), amplifier (2), comparer (3), controller (4), waveform generator (6), loudspeaker (7), relay (8) and solenoid valve (9), the temperature transition of gas range flame becomes analog current signal to amplify through described amplifier (2) by described sensor (1), compare through described comparer (3) and nominal voltage signal, described controller (4) is given again by the signal transmission after relatively, described controller (4) carries out judging that rear generation alerting signal exports waveform generator (6) and relay (8) respectively to, described waveform generator (6) produces square-wave signal makes described loudspeaker (7) give the alarm, described relay (8) connects and makes described solenoid valve (9) work cut out coal gas.
2. the gas leak detector that can automatically cut out according to claim 1, is characterized in that: described sensor (1) adopts temperature sensor, is specially armoured thermocouple.
3. the gas leak detector that can automatically cut out according to claim 1, is characterized in that: described amplifier (2) and comparer (3) share LM324 four-operational amplifier.
4. the gas leak detector that can automatically cut out according to claim 1, is characterized in that: described controller (4) adopts analog switch, is specially CD4066 tetra-reversible controller.
5. the gas leak detector that can automatically cut out according to claim 1, is characterized in that: described waveform generator (6) adopts NE555 time-base integrated circuit.
6. the gas leak detector that can automatically close according to any one of claim 1 to 5, it is characterized in that: the described gas leak detector that can automatically cut out also comprises indicator light circuit (5), described indicator light circuit (5) comprises LED light emitting diode DS, resistance R5, the negative electrode of described LED light emitting diode DS is connected to the pin 3 of described controller (4), the anode of described LED light emitting diode DS is connected to one end of described resistance R5, and the other end of described resistance R5 is connected to power end VCC, the pin 8 of controller (4), pin 14 simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384077.9U CN204087442U (en) | 2014-07-13 | 2014-07-13 | A kind of gas leak detector that can automatically close |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384077.9U CN204087442U (en) | 2014-07-13 | 2014-07-13 | A kind of gas leak detector that can automatically close |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204087442U true CN204087442U (en) | 2015-01-07 |
Family
ID=52180125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420384077.9U Expired - Fee Related CN204087442U (en) | 2014-07-13 | 2014-07-13 | A kind of gas leak detector that can automatically close |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204087442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036371A (en) * | 2018-01-31 | 2018-05-15 | 佛山市云米电器科技有限公司 | A kind of kitchen range and flame determination methods using thermocouple monitoring flame status |
-
2014
- 2014-07-13 CN CN201420384077.9U patent/CN204087442U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036371A (en) * | 2018-01-31 | 2018-05-15 | 佛山市云米电器科技有限公司 | A kind of kitchen range and flame determination methods using thermocouple monitoring flame status |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150713 |
|
| EXPY | Termination of patent right or utility model |