CN2491921Y - Flammable, harm gas leakage self-discharging warner - Google Patents
Flammable, harm gas leakage self-discharging warner Download PDFInfo
- Publication number
- CN2491921Y CN2491921Y CN 01243950 CN01243950U CN2491921Y CN 2491921 Y CN2491921 Y CN 2491921Y CN 01243950 CN01243950 CN 01243950 CN 01243950 U CN01243950 U CN 01243950U CN 2491921 Y CN2491921 Y CN 2491921Y
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- CN
- China
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- bridge rectifier
- rectifier circuit
- gas sensor
- flammable
- resistance
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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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- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model provides a flammable nocuous gas leaking automatic discharging annunciator and belongs to a safety device, which comprises a gas sensor MQ connected on a fan-out of a bridge rectification circuit which is connected behind a T secondary coil of a transformer, the gas sensor is connected with a controllable silicon VS by an audion BG, a relay winding J is connected on the controllable silicon, a relay normal open contact J-1 connected in series and a buzzer HTD are arranged on the fan-out of the bridge rectification circuit, a relay normal open contact J-2 connected in series and a discharging fan generator M are connected with the commercial power. The utility model has the advantages of simple structure, reliable property, high sensitive performance, low producing cost, easy producing, automatic alarming, automatic opening of the discharging fan for discharging the flammable nocuous gas, and good security.
Description
Technical field
The utility model provides a kind of safety feature, especially a kind of warning discharger of flammable, harmful gas.
Background technology
Along with the raising of people's living standard, city and rural area adopt inflammable gass such as liquid gas, coal gas, rock gas to act as a fuel more and more.Inflammable gas has made things convenient for people's life, has reduced air pollution, but use also causes the generation of fire and poisoning easily because of leakage.In addition, in the winter time, the most of family of northern China solves the heating problem with coal furnace.Because door and window sealing in winter better, the gas poisoning phenomenon happens occasionally.Some warning devices are arranged now, but complex structure, the production cost height, sensitivity is also lower.
Summary of the invention
The purpose of this utility model provides a kind of flammable, poisonous gas leakage from arranging alarm, to improve the security of using.
The utility model is to realize like this, flammable, poisonous gas leakage is arranged alarm certainly, it has on the bridge rectifier circuit output terminal after gas sensor is connected on transformer T secondary coil, gas sensor also links to each other with controllable silicon through triode, relay coil is connected on the controllable silicon, relay normally open contact after the series connection, hummer are connected on the bridge rectifier circuit output terminal, and another normally opened contact of the relay after the series connection, vent fan motor are connected on the civil power.
Adopt flammable, the poisonous gas leakage of said structure to arrange alarm certainly, compared with prior art, simple in structure, reliable operation, highly sensitive, production cost is low, easy to manufacture, capable of automatic alarm and open vent fan automatically, flammable, harmful gas are discharged outdoor, the family that is very suitable for using flammable, harmful gas, coal heating uses.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with description of drawings concrete structure of the present utility model and principle of work.
As shown in drawings, flammable, the poisonous gas leakage of the utility model are arranged alarm certainly, arrange on the alarm transformer T secondary coil two ends and diode D certainly described
1, D
2, D
3, D
4The input end of the bridge rectifier circuit of forming links to each other, and the A pin of the output terminal one termination gas sensor MQ of bridge rectifier circuit, the other end are through resistance R
1Connect the B pin of gas sensor MQ, heater coil bipod H, the H of gas sensor MQ are connected on bridge rectifier circuit output terminal two ends, and the base stage of triode BG is connected on B pin and the resistance R of gas sensor MQ
1Between, the collector of triode BG is through resistance R
2Connect bridge rectifier circuit one end, emitter respectively through resistance R
4Connect the control utmost point of controllable silicon VS, through resistance R
2Connect the other end of bridge rectifier circuit, controllable silicon VS after the series connection, relay coil J are connected on bridge rectifier circuit output terminal two ends, relay normally open contact J-1 after the series connection, hummer HTD are connected on bridge rectifier circuit output terminal two ends, and the relay normally open contact J-2 after the series connection, vent fan motor M are connected on the transformer T primary coil.
From arranging on the alarm, heater coil bipod H, the H of gas sensor MQ are through light emitting diode D described
5Be connected on bridge rectifier circuit output terminal two ends.This is a kind of whether alarm of row certainly of normal function of monitoring gas sensor work that has.
With reference to the accompanying drawings, transformer T primary coil is connected on the civil power, and the dc pulse voltage that obtains about 9V behind transformation, bridge rectifier provides power supply for the circuit of back.In the room concentration of gas just often, the resistance between the A pin of gas sensor MQ and heater coil bipod H, the H is very big, triode BG ends, the circuit of gas sensor back is not worked.When in the room flammable, when poisonous gas leakage reaches finite concentration, the A pin of gas sensor MQ and the resistance decreasing between the heater coil bipod, BG obtains the base voltage conducting, the control utmost point of controllable silicon VS obtains trigger voltage and the conducting that is triggered, relay coil J gets electric, makes relay normally open contact J-1, J-2 closure.The J-1 closure makes the hummer HTD warning of sounding.The J-2 closure makes the vent fan motor M get electric (the vent fan motor is connected on the civil power), and vent fan work will contain indoor gas flammable, harmful gas and discharge outdoor.When indoor flammable, when toxic gas is reduced to finite concentration, it is big that resistance between gas sensor A pin and the heater coil becomes again, BG ends, the silicon controlled control utmost point can not get controlling voltage, when arrived the zero point of pulse direct current, controllable silicon ended, relay coil J dead electricity, J-1, J-2 disconnect, and the circuit of gas sensor back quits work.
Light emitting diode D
5When gas sensor heater coil operate as normal, light.When heater coil blows, extinguish, remind the user in time to repair this and arrange alarm certainly.
This arranges alarm certainly should be installed in room air circulation place.
Claims (2)
1, flammable, poisonous gas leakage is arranged alarm certainly, it is characterized in that, arranges on the alarm transformer T secondary coil two ends and diode D certainly described
1, D
2, D
3, D
4The input end of the bridge rectifier circuit of forming links to each other, and the A pin of the output terminal one termination gas sensor MQ of bridge rectifier circuit, the other end are through resistance R
1Connect the B pin of gas sensor MQ, heater coil bipod H, the H of gas sensor MQ are connected on bridge rectifier circuit output terminal two ends, and the base stage of triode BG is connected on B pin and the resistance R of gas sensor MQ
1Between, the collector of triode BG is through resistance R
2Connect bridge rectifier circuit one end, emitter respectively through resistance R
4Connect the control utmost point of controllable silicon VS, through resistance R
2Connect the other end of bridge rectifier circuit, controllable silicon VS after the series connection, relay coil J are connected on bridge rectifier circuit output terminal two ends, relay normally open contact J-1 after the series connection, hummer HTD are connected on bridge rectifier circuit output terminal two ends, and the relay normally open contact J-2 after the series connection, vent fan motor M are connected on the transformer T primary coil.
2, flammable, poisonous gas leakage as claimed in claim 1 is characterized in that from arranging alarm, and from arranging on the alarm, heater coil bipod H, the H of gas sensor MQ are through light emitting diode D described
5Be connected on bridge rectifier circuit output terminal two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01243950 CN2491921Y (en) | 2001-07-15 | 2001-07-15 | Flammable, harm gas leakage self-discharging warner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01243950 CN2491921Y (en) | 2001-07-15 | 2001-07-15 | Flammable, harm gas leakage self-discharging warner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2491921Y true CN2491921Y (en) | 2002-05-15 |
Family
ID=33655465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01243950 Expired - Fee Related CN2491921Y (en) | 2001-07-15 | 2001-07-15 | Flammable, harm gas leakage self-discharging warner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2491921Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590289A (en) * | 2012-02-27 | 2012-07-18 | 上海恩尼克思工业仪器有限公司 | Catalytic combustion type gas sensor |
-
2001
- 2001-07-15 CN CN 01243950 patent/CN2491921Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590289A (en) * | 2012-02-27 | 2012-07-18 | 上海恩尼克思工业仪器有限公司 | Catalytic combustion type gas sensor |
| CN102590289B (en) * | 2012-02-27 | 2014-05-14 | 上海恩尼克思工业仪器有限公司 | Catalytic combustion type gas sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |