CN202403306U - Electronic combustible gas leakage automatic detection and protection device - Google Patents
Electronic combustible gas leakage automatic detection and protection device Download PDFInfo
- Publication number
- CN202403306U CN202403306U CN2011205463317U CN201120546331U CN202403306U CN 202403306 U CN202403306 U CN 202403306U CN 2011205463317 U CN2011205463317 U CN 2011205463317U CN 201120546331 U CN201120546331 U CN 201120546331U CN 202403306 U CN202403306 U CN 202403306U
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- protection device
- electronic
- combustible gas
- gas
- gas leakage
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Abstract
The utility model relates to a combustible gas detection and protection device, in particular to an electronic combustible gas leakage automatic detection and protection device. The technical scheme is that the electronic combustible gas leakage automatic detection and protection device is mainly composed of a casing, connectors, a detection circuit, a gas sensitive probe, an alarming horn, an exhaust fan and an electromagnetic valve. The detection circuit is arranged in a cavity of the casing, a plurality of wires led out from the detection circuit are connected to the exhaust fan and the electromagnetic valve through the connectors, and the gas sensitive probe and the alarming horn are arranged at the position of an opening on the side face of the casing. Compared with market products, the electronic combustible gas leakage automatic detection and protection device has the advantages of being simple in circuit and low in cost, adopting a power switch, being reliable in circuit operation, high in sensitivity, capable of detecting various combustible gases and smog, and serving as a fire alarm.
Description
Technical field
The utility model relates to a kind of fuel gas and detects protective device, and particularly a kind of electronic type fuel gas is revealed and detected protective device automatically.
Background technology
The comprehensive regulation is a how indispensable or scarce behave of correct handling economic construction and social stability of the new period.Domestic gas safety also is the important ring in the comprehensive improvement work.For deeply carrying out higher level's gist of a document of " about constantly improving the domestic gas security management mechanism "; Guarantee the worker-family safety of life and property; Annual constituent parts all strengthens inspection; Sign " domestic gas safe handling liability statement " with resident family, that has improved the crew uses the gas awareness of safety, makes domestic gas safety the alarm sounds continuously all the time.And serve as theme with " three stop ", stop gas appliance and gas explosion accident, the generation of stopping combustion gas poisoning and death by accident.
Summary of the invention
The purpose of the utility model is exactly the above-mentioned defective that exists to prior art; Provide a kind of electronic type fuel gas to reveal and detect protective device automatically; Can reveal volatile combustible gases such as fuel gas such as methane, butane and ethanol, gasoline and can detect protection, stop the generation of explosion accident.
Its technical scheme is: mainly be made up of shell, connector, testing circuit, gas-sensing probe, alarming horn, exhaust fan and magnetic valve; Described testing circuit is arranged on shell inner cavity; Testing circuit is drawn multiple conducting wires and is connected to exhaust fan and magnetic valve through connector, and gas-sensing probe and alarming horn are placed on the lateral opening place of shell.
The front panel of above-mentioned shell is provided with power switch, warning light emitting diode and fuse.
The beneficial effect of the utility model is: compare with the commercially available prod: circuit is simple, cost is low; Because of adopting power switch, circuit working is reliable, highly sensitive; Can detect multiple fuel gas, but also Smoke Detection, as fire-alarm.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model;
Accompanying drawing 2 is circuit diagrams of the utility model;
Among the last figure: shell 1, connector 2, testing circuit, gas-sensing probe QM-N5, alarming horn SP, power switch S, warning LED, fuse RD, transformer T, bridge heap QL, switch S 1, S2; Magnetic valve DF, exhaust fan M, DC voltage-stabilizing integrated package AN7805, capacitor C 1, C2, C3, potentiometer RW, relay K M, integrated power switch TWH8778, time-base integrated circuit NE555, SR FA.
The specific embodiment
With reference to accompanying drawing 1; The utility model mainly is made up of shell 1, connector 2, testing circuit, gas-sensing probe QM-N5, alarming horn SP, exhaust fan and magnetic valve; Put testing circuit in the sizeable shell 1 into, draw 4 leads and be connected to exhaust fan and magnetic valve through connector 2.Be placed on the lateral opening place of shell 1 to gas-sensing probe QM-N5 and alarming horn SP, and add Air Filter.Power switch S, warning LED, fuse RD are fixed on the front panel of shell 1 and get final product.
With reference to accompanying drawing 2, the circuit working principle of the utility model is
:Close switch S1, alternating current 220V power supply are added to the former limit of transformer T, induce at its secondary and exchange 12V low pressure, become direct current through bridge heap QL rectification, filter capacitor C1 filtering, and this direct-current power supply subsequent conditioning circuit uses.It is anodal that DC voltage-stabilizing integrated package AN7805 input 1 pin meets filter capacitor C1, and it carries out voltage stabilizing to the DC voltage that rectification goes out, and the 5V burning voltage of 3 pin output is supplied with the filament F1F2 of gas-sensing probe QM-N5, and filament is carried out preheating.For guaranteeing the filament working stability, so it is carried out burning voltage with DC voltage-stabilizing integrated package AN7805.
When combustible gas leakage; The gas-sensing probe QM-N5 resistance of the good holding state of preheating descends; Second measure utmost point B1B2 and connect voltage on the potentiometer RW raise rapidly (the first measurement utmost point A1A2 connects the filter capacitor positive pole) at it; Make integrated power switch TWH8778 triggering and conducting, its relay K M that output connect gets electronic work: 4 pairs of normal opened contacts are closed simultaneously.First couple of normal opened contact KM1-1 is closed, and relay is realized self-sustaining; Second couple of normal opened contact KM1-2 is closed, connects the warning circuit driving alarming horn SP that is made up of time-base integrated circuit NE555 and sends the sound, and LED is lighted simultaneously, reminds the Field Force to have combustion gas to reveal, and need take the precautionary measures; The 3rd couple of normal opened contact KM1-3 is closed, connects power of electromagnetic valve, and source of the gas is closed in the magnetic valve action; The 4th couple of normal opened contact KM1-4 is closed, connects exhaust fan, discharges toxic gas outdoor.After the whole emptyings of toxic gas, click SR FA, circuit reset, relay K M returns, and gets into stand-by state again, waits for gas leakage action once more.Potentiometer RW is used to adjust this Device Testing sensitivity.Switch S 2 is the exhaust fan hand switch, and it and automatic switch KM1-4 and connecing can be used at any time, to keep indoor air clean.
Claims (2)
1. an electronic type fuel gas is revealed and is detected protective device automatically; It is characterized in that: mainly form by shell, connector, testing circuit, gas-sensing probe, alarming horn, exhaust fan and magnetic valve; Described testing circuit is arranged on shell inner cavity; Testing circuit is drawn multiple conducting wires and is connected to exhaust fan and magnetic valve through connector, and gas-sensing probe and alarming horn are placed on the lateral opening place of shell.
2. electronic type fuel gas according to claim 1 is revealed and is detected protective device automatically, and it is characterized in that: the front panel of described shell is provided with power switch, warning light emitting diode and fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205463317U CN202403306U (en) | 2011-12-23 | 2011-12-23 | Electronic combustible gas leakage automatic detection and protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205463317U CN202403306U (en) | 2011-12-23 | 2011-12-23 | Electronic combustible gas leakage automatic detection and protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202403306U true CN202403306U (en) | 2012-08-29 |
Family
ID=46700950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205463317U Expired - Fee Related CN202403306U (en) | 2011-12-23 | 2011-12-23 | Electronic combustible gas leakage automatic detection and protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202403306U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103927844A (en) * | 2014-03-27 | 2014-07-16 | 韦翔鹏 | Fire alarm circuit |
| CN106023536A (en) * | 2016-08-12 | 2016-10-12 | 安徽中杰信息科技有限公司 | Hazardous chemical substance gas leakage detection device |
-
2011
- 2011-12-23 CN CN2011205463317U patent/CN202403306U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103927844A (en) * | 2014-03-27 | 2014-07-16 | 韦翔鹏 | Fire alarm circuit |
| CN106023536A (en) * | 2016-08-12 | 2016-10-12 | 安徽中杰信息科技有限公司 | Hazardous chemical substance gas leakage detection device |
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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: 20120829 Termination date: 20121223 |