CN110164097A - Poisonous gas leakage detection circuit in a kind of chemical industry preparation process - Google Patents
Poisonous gas leakage detection circuit in a kind of chemical industry preparation process Download PDFInfo
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- CN110164097A CN110164097A CN201810271381.5A CN201810271381A CN110164097A CN 110164097 A CN110164097 A CN 110164097A CN 201810271381 A CN201810271381 A CN 201810271381A CN 110164097 A CN110164097 A CN 110164097A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
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- Engineering & Computer Science (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The present invention discloses poisonous gas leakage detection circuit in a kind of chemical industry preparation process, including power-switching circuit, detection circuit and control circuit and warning circuit；It is characterized in that, the power-switching circuit includes diode D2-D7, three terminal regulator IC1 and resistance R10, the detection circuit includes gas sensor A, triode VT1, resistance R4, the control circuit includes chip IC 2, triode VT2, resistance R8 and relay J, and described include circuit includes triode VT2, chip IC 2 and loudspeaker B.Poisonous gas leakage detection circuit uses MQ-6 type gas sensor as detecting element in chemical industry preparation process of the present invention, it is insensitive to gases such as flue gas, fogs, therefore false triggering probability is low, and when having detected the leakage of combustible hazardous gas, on the one hand alarm is issued, open blower simultaneously and the pernicious gas of leakage be discharged to indoor, harm caused by greatly reducing because of poisonous gas leakage, thus circuit have the advantages that structure simply, high sensitivity and vdiverse in function.
Description
Technical field
The present invention relates to a kind of detection technique, poisonous gas leakage detection circuit in specifically a kind of chemical industry preparation process.
Background technique
Flammable or pernicious gas may be generated in some special chemical production process, such as has carbon monoxide, methane
With hydrogen etc.；Once these harmful gas concentrations are more than certain limit, will be easy in forming explosive mixture in air,
Biggish security risk is generated, inside especially closed workshop, air flow amount is smaller, it is therefore desirable to raw to this kind of chemical industry
The gas produced in workshop is measured in real time control.
Summary of the invention
Poisonous gas leakage in chemical industry preparation process simple, vdiverse in function that the purpose of the present invention is to provide a kind of structures
Detection circuit, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
Poisonous gas leakage detection circuit in a kind of chemical industry preparation process, including power-switching circuit, detection circuit and control electricity
Road and warning circuit；It is characterized in that, the power-switching circuit includes diode D2-D7, three terminal regulator IC1 and resistance
R10, the detection circuit include gas sensor A, triode VT1, resistance R4, and the control circuit includes chip IC 2, three poles
Pipe VT2, resistance R8 and relay J, described include circuit includes triode VT2, chip IC 2 and loudspeaker B,
The pin 1 of one end connection capacitor C1 and three terminal regulator IC1 of the resistance R10, the other end of resistance R10 connect two poles
The cathode of the cathode of pipe D2, the cathode of diode D3 and diode D4, diode D2 anode connection three-phase alternating current U phase and
The cathode of diode D5, the V phase of the anode connection three-phase alternating current of diode D3 and the cathode of diode D6, the sun of diode D4
The W phase of pole connection three-phase alternating current and the cathode of diode D7, the other end of the connection of the pin 2 capacitor C1 of three terminal regulator IC1,
Resistance R5, the cathode of diode D1, the emitter of triode VT1, relay J, the anode of diode D5, diode D6 sun
Pole, the anode of diode D7, blower M, the foot 6 of gas sensor A and chip IC 2 pin 8, the pin 3 of three terminal regulator IC1
The pin 16 of resistance R1, resistance R2, resistance R3, the contact J-1 of relay J, loudspeaker B and chip IC 2 are connected, resistance R1's is another
End connects the foot 2 of the foot 1 of gas sensor A, gas sensor A, and the other end connection blower M's of the contact J-1 of relay J is another
One end, the foot 5 of the other end connection gas sensor A of resistance R2, the foot 4 of the connection of the foot 3 gas sensor A of gas sensor A,
The collector of the other end of resistance R4 and resistance R5, the base stage of the other end connecting triode VT1 of resistance R4, triode VT1 connects
The other end of connecting resistance R3 and the pin 12 of chip IC 2, the pin 11 of chip IC 2 connect resistance R6, and the pin 9 of chip IC 2 connects
Capacitor C2 is met, the pin 10 of chip IC 2 connects resistance R7, and the pin 7 of chip IC 2 connects resistance R9, and the other end of resistance R9 connects
Connecing the anode of diode D1, the pin 5 of chip IC 2 connects resistance R8, the base stage of the other end connecting triode VT1 of resistance R8,
The other end of the collector connection loudspeaker B of triode VT1, the other end of the emitter connection relay J of triode VT1.
As a preferred solution of the present invention: the model 7805 of the three terminal regulator IC1, the model of the chip IC 2
For CD4060.
As a preferred solution of the present invention: the relay J is normally opened contact relay.
As a preferred solution of the present invention: the model MQ-6 of the gas sensor A.
Compared with prior art, the beneficial effects of the present invention are: poisonous gas leakage is examined in chemical industry preparation process of the present invention
Slowdown monitoring circuit uses MQ-6 type gas sensor as detecting element, insensitive to gases such as flue gas, fogs, therefore false triggering probability
It is low, and when having detected the leakage of combustible hazardous gas, alarm is on the one hand issued, while opening blower for leakage
Pernicious gas discharge is indoor, harm caused by greatly reducing because of poisonous gas leakage, therefore circuit has structure simple, clever
Sensitivity height and advantage vdiverse in function.
Detailed description of the invention
Fig. 1 is the circuit diagram of poisonous gas leakage detection circuit in chemical industry preparation process.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, poisonous gas leakage detection circuit in a kind of chemical industry preparation process, including power-switching circuit, inspection
Slowdown monitoring circuit and control circuit and warning circuit；It is characterized in that, the power-switching circuit includes diode D2-D7, three ends are steady
Depressor IC1 and resistance R10, the detection circuit include gas sensor A, triode VT1, resistance R4, the control circuit packet
Include chip IC 2, triode VT2, resistance R8 and relay J, described include circuit includes triode VT2, chip IC 2 and loudspeaker B,
The pin 1 of one end connection capacitor C1 and three terminal regulator IC1 of the resistance R10, the other end of resistance R10 connect two poles
The cathode of the cathode of pipe D2, the cathode of diode D3 and diode D4, diode D2 anode connection three-phase alternating current U phase and
The cathode of diode D5, the V phase of the anode connection three-phase alternating current of diode D3 and the cathode of diode D6, the sun of diode D4
The W phase of pole connection three-phase alternating current and the cathode of diode D7, the other end of the connection of the pin 2 capacitor C1 of three terminal regulator IC1,
Resistance R5, the cathode of diode D1, the emitter of triode VT1, relay J, the anode of diode D5, diode D6 sun
Pole, the anode of diode D7, blower M, the foot 6 of gas sensor A and chip IC 2 pin 8, the pin 3 of three terminal regulator IC1
The pin 16 of resistance R1, resistance R2, resistance R3, the contact J-1 of relay J, loudspeaker B and chip IC 2 are connected, resistance R1's is another
End connects the foot 2 of the foot 1 of gas sensor A, gas sensor A, and the other end connection blower M's of the contact J-1 of relay J is another
One end, the foot 5 of the other end connection gas sensor A of resistance R2, the foot 4 of the connection of the foot 3 gas sensor A of gas sensor A,
The collector of the other end of resistance R4 and resistance R5, the base stage of the other end connecting triode VT1 of resistance R4, triode VT1 connects
The other end of connecting resistance R3 and the pin 12 of chip IC 2, the pin 11 of chip IC 2 connect resistance R6, and the pin 9 of chip IC 2 connects
Capacitor C2 is met, the pin 10 of chip IC 2 connects resistance R7, and the pin 7 of chip IC 2 connects resistance R9, and the other end of resistance R9 connects
Connecing the anode of diode D1, the pin 5 of chip IC 2 connects resistance R8, the base stage of the other end connecting triode VT1 of resistance R8,
The other end of the collector connection loudspeaker B of triode VT1, the other end of the emitter connection relay J of triode VT1.
The model 7805 of three terminal regulator IC1, the model CD4060 of the chip IC 2.Relay J is normally opened contact
Relay.The model MQ-6 of gas sensor A.
The working principle of the invention is: the commercial power of 380V is defeated after the three-phase rectifier that diode D2-D7 is formed
DC voltage out, this DC voltage are depressured by resistance R10, give detection electricity after capacitor C1 filtering and 7805 three terminal regulator pressure stabilizings
Road and warning circuit power supply, under normal circumstances, gas sensor A can't detect pernicious gas, and warning circuit does not work, triode
VT2 is disconnected, and loudspeaker B and relay J do not work, so that blower M does not work, when there is pernicious gas leakage situation, quick biography
Sensor A detects pernicious gas information, and dependent sensor A is connected, triode VT1 work once electrified, and chip IC 2 obtains triggering alarm signal
Number, trigger signal, driving triode VT2 conducting, so that loudspeaker B and light-emitting diodes are exported from the pin 5 and pin 7 of chip IC 2
Pipe D1 issues sound-light alarm, while relay J is connected, and normally opened electric shock J-1 is attracted, so that blower M work once electrified.
Poisonous gas leakage detection circuit uses MQ-6 type gas sensor as detection in chemical industry preparation process of the present invention
Element, it is insensitive to gases such as flue gas, fogs, therefore false triggering probability is low, and is detecting the leakage of combustible hazardous gas
When, alarm is on the one hand issued, while opening blower and interior is discharged in the pernicious gas of leakage, greatly reduced because having
Harm caused by evil gas leakage, thus circuit have the advantages that structure simply, high sensitivity and vdiverse in function.
Claims (4)
1. poisonous gas leakage detection circuit in a kind of chemical industry preparation process, including power-switching circuit, detection circuit and control
Circuit and warning circuit；It is characterized in that, the power-switching circuit includes diode D2-D7, three terminal regulator IC1 and resistance
R10, the detection circuit include gas sensor A, triode VT1, resistance R4, and the control circuit includes chip IC 2, three poles
Pipe VT2, resistance R8 and relay J, described include circuit includes triode VT2, chip IC 2 and loudspeaker B,
The pin 1 of one end connection capacitor C1 and three terminal regulator IC1 of the resistance R10, the other end of resistance R10 connect two poles
The cathode of the cathode of pipe D2, the cathode of diode D3 and diode D4, diode D2 anode connection three-phase alternating current U phase and
The cathode of diode D5, the V phase of the anode connection three-phase alternating current of diode D3 and the cathode of diode D6, the sun of diode D4
The W phase of pole connection three-phase alternating current and the cathode of diode D7, the other end of the connection of the pin 2 capacitor C1 of three terminal regulator IC1,
Resistance R5, the cathode of diode D1, the emitter of triode VT1, relay J, the anode of diode D5, diode D6 sun
Pole, the anode of diode D7, blower M, the foot 6 of gas sensor A and chip IC 2 pin 8, the pin 3 of three terminal regulator IC1
The pin 16 of resistance R1, resistance R2, resistance R3, the contact J-1 of relay J, loudspeaker B and chip IC 2 are connected, resistance R1's is another
End connects the foot 2 of the foot 1 of gas sensor A, gas sensor A, and the other end connection blower M's of the contact J-1 of relay J is another
One end, the foot 5 of the other end connection gas sensor A of resistance R2, the foot 4 of the connection of the foot 3 gas sensor A of gas sensor A,
The collector of the other end of resistance R4 and resistance R5, the base stage of the other end connecting triode VT1 of resistance R4, triode VT1 connects
The other end of connecting resistance R3 and the pin 12 of chip IC 2, the pin 11 of chip IC 2 connect resistance R6, and the pin 9 of chip IC 2 connects
Capacitor C2 is met, the pin 10 of chip IC 2 connects resistance R7, and the pin 7 of chip IC 2 connects resistance R9, and the other end of resistance R9 connects
Connecing the anode of diode D1, the pin 5 of chip IC 2 connects resistance R8, the base stage of the other end connecting triode VT1 of resistance R8,
The other end of the collector connection loudspeaker B of triode VT1, the other end of the emitter connection relay J of triode VT1.
2. poisonous gas leakage detection circuit in a kind of chemical industry preparation process according to claim 1, which is characterized in that institute
State the model 7805 of three terminal regulator IC1, the model CD4060 of the chip IC 2.
3. poisonous gas leakage detection circuit in a kind of chemical industry preparation process according to claim 1, which is characterized in that institute
Stating relay J is normally opened contact relay.
4. poisonous gas leakage detection circuit in a kind of chemical industry preparation process according to claim 1, which is characterized in that institute
State the model MQ-6 of gas sensor A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271381.5A CN110164097A (en) | 2018-03-29 | 2018-03-29 | Poisonous gas leakage detection circuit in a kind of chemical industry preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271381.5A CN110164097A (en) | 2018-03-29 | 2018-03-29 | Poisonous gas leakage detection circuit in a kind of chemical industry preparation process |
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| Publication Number | Publication Date |
|---|---|
| CN110164097A true CN110164097A (en) | 2019-08-23 |
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ID=67636355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810271381.5A Pending CN110164097A (en) | 2018-03-29 | 2018-03-29 | Poisonous gas leakage detection circuit in a kind of chemical industry preparation process |
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Citations (10)
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|---|---|---|---|---|
| CN86104376A (en) * | 1986-06-19 | 1987-12-30 | 衡阳半导体厂 | Fully automated controller |
| CN2146392Y (en) * | 1992-12-10 | 1993-11-17 | 陈元臣 | Brightening device for vehicle lamp |
| CN1410214A (en) * | 2001-09-25 | 2003-04-16 | 哈尔滨工业大学 | No secondary commutating D.C. resistance welding machine and its control method |
| CN201994841U (en) * | 2011-03-21 | 2011-09-28 | 深圳市禾望电气有限公司 | Frequency converter |
| CN204759102U (en) * | 2015-08-07 | 2015-11-11 | 陈筱景 | Smoke ventilator control circuit |
| CN204856841U (en) * | 2015-07-06 | 2015-12-09 | 南安日科电子有限公司 | Gas leakage protects warning circuit |
| CN206018284U (en) * | 2016-07-02 | 2017-03-15 | 青岛埃维燃气有限公司 | A kind of natural gas leaking automatic detection and intelligence control system |
| CN206021516U (en) * | 2016-08-23 | 2017-03-15 | 贺军生 | A kind of gas leak detects alarm |
| CN107749149A (en) * | 2017-11-01 | 2018-03-02 | 镇江市诺邦环保科技有限公司 | A kind of detection alarm for being used for flammable toxic gas in environment |
| CN207117489U (en) * | 2017-08-29 | 2018-03-16 | 浙江新富凌电气股份有限公司 | A kind of engraving machine special converter |
-
2018
- 2018-03-29 CN CN201810271381.5A patent/CN110164097A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86104376A (en) * | 1986-06-19 | 1987-12-30 | 衡阳半导体厂 | Fully automated controller |
| CN2146392Y (en) * | 1992-12-10 | 1993-11-17 | 陈元臣 | Brightening device for vehicle lamp |
| CN1410214A (en) * | 2001-09-25 | 2003-04-16 | 哈尔滨工业大学 | No secondary commutating D.C. resistance welding machine and its control method |
| CN201994841U (en) * | 2011-03-21 | 2011-09-28 | 深圳市禾望电气有限公司 | Frequency converter |
| CN204856841U (en) * | 2015-07-06 | 2015-12-09 | 南安日科电子有限公司 | Gas leakage protects warning circuit |
| CN204759102U (en) * | 2015-08-07 | 2015-11-11 | 陈筱景 | Smoke ventilator control circuit |
| CN206018284U (en) * | 2016-07-02 | 2017-03-15 | 青岛埃维燃气有限公司 | A kind of natural gas leaking automatic detection and intelligence control system |
| CN206021516U (en) * | 2016-08-23 | 2017-03-15 | 贺军生 | A kind of gas leak detects alarm |
| CN207117489U (en) * | 2017-08-29 | 2018-03-16 | 浙江新富凌电气股份有限公司 | A kind of engraving machine special converter |
| CN107749149A (en) * | 2017-11-01 | 2018-03-02 | 镇江市诺邦环保科技有限公司 | A kind of detection alarm for being used for flammable toxic gas in environment |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190823 |
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| RJ01 | Rejection of invention patent application after publication |