CN2501128Y - Combustible gas alarm - Google Patents
Combustible gas alarm Download PDFInfo
- Publication number
- CN2501128Y CN2501128Y CN 01261036 CN01261036U CN2501128Y CN 2501128 Y CN2501128 Y CN 2501128Y CN 01261036 CN01261036 CN 01261036 CN 01261036 U CN01261036 U CN 01261036U CN 2501128 Y CN2501128 Y CN 2501128Y
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- China
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- comparer
- percussion instrument
- alarm
- chinese percussion
- output terminal
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- Expired - Fee Related
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Abstract
The utility model relates to a combustible gas alarm, comprising a sensor, a comparator, an exhaust device, a signal responder and an air supply cutting off control device. The input terminal of the comparator is electrically connected with the output terminal of the sensor; three signals are sent out by the output terminal of the comparator, with one signal supplying for the exhaust device, one supplying for the signal responder, and the other for the air supply cutting off control device. Three grade alarm device can be provided by the utility model, the exhaust device is started with the first grade alarm, an audio alarming is started with the second grade alarm and the power supply is cut off with the third grade alarm to avoid the damage of personnel and property. The device is also provided with a UPS direct current stabilized supply, and a real-time monitoring of all weather can be performed, so as to prevent the defects caused by power cutting, absence of personnel or failure in hearing the alarm in sleep, therefore fundamentally putting an end to the hidden trouble of safety accident.
Description
Technical field
The utility model relates to alarm, particularly gas alarm.
Background technology
Along with the raising of China's living standards of the people, coal gas and rock gas have been popularized in increasing city and rural area.The use of coal gas and rock gas has come great convenience to people's lives.Yet in case the accident of meeting accident causes pipe leakage, inflammable gass such as carbon monoxide, artificial coal gas, rock gas will form injury to human body because of concentration over-standard, even accidents such as initiation fire, blast.Therefore, be badly in need of the alarm of a kind of dependable performance of development, stop the hidden danger that accident takes place.
Summary of the invention
The purpose of this utility model provides a kind of sensitivity reliable flammable gas alarm in addressing the above problem, and it has three grades of warning functions, can cut off source of the gas automatically, stops the hidden danger that accident takes place.
The purpose of this utility model is achieved in that a kind of flammable gas alarm, include power supply, sensor, news Chinese percussion instrument, it is characterized in that: it mainly cuts off control device by stabilized voltage supply, sensor, comparer, air exhausting device, news Chinese percussion instrument, source of the gas and constitutes, the input end of described comparer is electrically connected with the output terminal of sensor, the output terminal of comparer is exported three road signals, one the road supplies with air exhausting device, and the news Chinese percussion instrument is supplied with on another road, the one road supplies with source of the gas cut-out control device again.
Described comparer has three, and one of them comparer is exported one road signal and supplied with air exhausting device, and another comparer is exported one road signal and supplied with the news Chinese percussion instrument; Another comparer output two paths of signals is supplied with source of the gas respectively and is cut off control device Homeway.com Chinese percussion instrument; The in-phase input end of each comparer all is connected with sensor, the inverting input of each comparer is connected to the reference voltage of different threshold values, wherein provide the threshold voltage of comparer of electric signal lower to air exhausting device, provide the threshold values of comparer of electric signal higher to the news Chinese percussion instrument, cutting off control device to source of the gas provides the threshold values of comparer of electric signal the highest.
Described comparer is a voltage comparator, and described news Chinese percussion instrument is a voice guard, and it is controllable silicon interlock electromagnetic valve structure that described source of the gas cuts off control device, and described power supply is the on line type UPS D.C. regulated power supply.
The output terminal of described voltage comparator is connected to the current amplifier that triode constitutes.
The primary structure of described stabilized voltage supply is: by the former edge joint external power of transformer B, the secondary of B meets rectifier bridge D, the positive potential output terminal of rectifier bridge D is divided into duplex feeding, one the tunnel provides charging current through controllable silicon T1 to battery E, another road is through the pin 4 of regulator block 7805 to ic chip 1,8 power supplies, the input voltage of the pin 2 of IC1 is provided by the dividing potential drop of variable resistor PR2, pin 6 input voltages of IC1 are provided by the dividing potential drop of variable resistor PR1, described variable resistor PR1 and PR2 just are being connected across rectifier bridge D, between the negative potential output terminal, be serially connected with regulator block 2950 on the discharge loop of described battery E; The output terminal of described sensor is connected with the in-phase input end of voltage comparator V2, V3, V4, the anti-in-phase input end of V2, V3, V4 connects positive source through resistance respectively, the output signal of voltage comparator V2 is supplied with the gate pole of controllable silicon T3 after triode BG4 amplifies, the output signal of voltage comparator V3 is supplied with news Chinese percussion instrument FM after triode BG2 amplifies; The output signal one tunnel of voltage comparator V4 is supplied with news Chinese percussion instrument FM after triode BG5 amplifies, the gate pole of controllable silicon T2 is given on another road after triode BG3 amplifies, described controllable silicon T3 is serially connected on the current supply circuit of air exhausting device, and described controllable silicon T2 is serially connected on the current supply circuit of solenoid valve KV.
Described sensor is the carbon monoxide transducer of MQ312 model, and the model of described ic chip 1 is 555, and the model of described voltage comparator V2, V3, V4 is 324.
Of the present utility model have a following actively useful effect:
This alarm is made up of combustible gas sensor electronic control circuit, on line type UPSs etc. such as coal gas, rock gases.Alarm is according to the different concentration of detected inflammable gas, and type of alarm is different.When coal gas, rock gas had slight distributing to report to the police in air, type of alarm was discharged gas outdoor for the starting air exhausting device; After concentration strengthens, the warning reminding of sounding people's attention; As distributing of concentration when bigger, may damage before the concentration that maybe will reach capacity automatic start-up control device human body, cut off source of the gas, strengthen the alarm sound of alarm simultaneously, avoid causing the infringement of personnel, property.This device also is furnished with UPS D.C. regulated power supply power supply, round-the-clock real-time monitoring, thereby avoid because of have a power failure, unmanned or sleepingly can't hear the shortcoming that chimes of doom causes, fundamentally stopped the hidden danger that has an accident.
Description of drawings
Fig. 1 is an external form synoptic diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model;
Fig. 3 is the embodiment of Fig. 2;
Specific embodiment
Please refer to that each label is among Fig. 1, the figure: the 1st, electric power incoming line, the 2nd, power safety, the 3rd, relay indicating light, the 4th, alarm lamp, the 5th, the news Chinese percussion instrument for example uses hummer, the 6th, air intake opening, the 7th, manual air discharge cook, the 8th, reset switch, the 9th, exhaust socket, the 10th removes the solenoid valve lead.
Please refer to Fig. 2, flammable gas alarm of the present utility model, it mainly cuts off control device by sensor, comparer, air exhausting device, news Chinese percussion instrument, source of the gas and constitutes, the input end of described comparer is electrically connected with the output terminal of sensor, the output terminal of comparer is exported three road signals, one the road supplies with air exhausting device, and the news Chinese percussion instrument is supplied with on another road, the one road supplies with source of the gas cut-out control device again.
Please refer to Fig. 3, in preferable embodiment, comparer has three, one of them comparer V2 exports one road signal and supply with the gate pole that is serially connected in the controllable silicon T3 on the air exhausting device loop after triode BG4 amplifies, controllable silicon T3 is equivalent to the switch of air exhausting device, another comparer V3 exports one road signal and amplifies supply news Chinese percussion instrument through triode BG2, the news Chinese percussion instrument can use voice guard FM, and another comparer V4 output two paths of signals is supplied with source of the gas respectively and cut off control device Homeway.com Chinese percussion instrument FM after triode BG3, BG5 amplify.It is controllable silicon T2 interlock solenoid valve KV structure that source of the gas cuts off control device, this solenoid valve KV is installed on the supply air line, the in-phase input end of each comparer V2, V3, V4 is that the carbon monoxide transducer of MQ312 is connected with model all, the inverting input of each comparer V2, V3, V4 is connected to the reference voltage of different threshold values, wherein provide the threshold voltage of comparer V2 of electric signal lower to air exhausting device, provide the threshold values of comparer V3 of electric signal higher to news Chinese percussion instrument FM, the threshold values that cuts off the comparer V4 that control device provides electric signal to source of the gas is the highest.Like this according to sensor MQ312 output signal by weak crescendo, each comparer V2, V3, V4 move successively, realize three grades of warning functions.
This alarm adopts the alternating current 220V power supply, when external power has a power failure or other reason can not normal power supply the time, and the inner UPS D.C. regulated power supply of starting automatically, confess+6V to be to keep every function of alarm.The electricity that exchanges confession is divided into two-way, the pulsating current that a kind of battery E of giving charges, and another road is that UPS itself is required, and when 6 pin current potentials of ic chip 1 are higher than 4.2,3 pin of IC1 will become electronegative potential, and circuit will be closed controllable silicon T1, stop battery E is charged; When the 2 pin current potentials of IC1 are lower than 2.8V, 3 pin of IC1 will become noble potential, continue to give battery E charging, and battery E both end voltage remains between the 7.2V-5.8 like this, and this circuit adopts low pressure reduction mu balanced circuit 2950, makes alarm be in normal working voltage all the time.
Before coming into operation for the first time, alarm on assembly line, MQ312 is carried out wearing out in 24 hours-48 hours earlier.When the user uses, at first form chronotron (5 minutes), MQ312 is cleaned to guarantee its operate as normal by comparer V1; Wherein, variable resistance PR3 is for adjusting warning sensitivity;
Under the situation of slight gas leakage, the effect of comparer V2 starting air exhausting device or smoke exhaust ventilator.When continuing gas leakage, the comparer V3 caution of sounding is about the 60-70 decibel.Continue gas leakage and reach when soon endangering personal safety, comparer V4 plays moving electromagnetic valve KV, closes source of the gas, strengthened the electric current of news Chinese percussion instrument FM simultaneously, made FM send strong audible alarm, greatly about about the 80-90 decibel, up to people's processing drain-source that is on the scene, operate as normal resets.
The alarm using method:
1. energized, pilot lamp is bright, and alarm enters duty after five minutes.
2. red light LED2 is bright when indoor inflammable gas concentration reaches the warning of I level, starts air exhausting device simultaneously automatically, gets rid of the inflammable gas of indoor leakage; If indoor inflammable gas concentration still continues to strengthen, when reaching II level warning concentration, news Chinese percussion instrument FM sends alarm call, when inflammable gas continues to strengthen, when reaching III level warning concentration, cuts off source of the gas automatically and causes danger avoiding.
Claims (6)
1. flammable gas alarm, include power supply, sensor, news Chinese percussion instrument, it is characterized in that: it mainly cuts off control device by stabilized voltage supply, sensor, comparer, air exhausting device, news Chinese percussion instrument, source of the gas and constitutes, the input end of described comparer is electrically connected with the output terminal of sensor, the output terminal of comparer is exported three road signals, one the road supplies with air exhausting device, and the news Chinese percussion instrument is supplied with on another road, the one road supplies with source of the gas cut-out control device again.
2. flammable gas alarm as claimed in claim 1 is characterized in that: described comparer has three, and one of them comparer is exported one road signal and supplied with air exhausting device, and another comparer is exported one road signal and supplied with the news Chinese percussion instrument; Another comparer output two paths of signals is supplied with source of the gas respectively and is cut off control device Homeway.com Chinese percussion instrument; The in-phase input end of each comparer all is connected with sensor, the inverting input of each comparer is connected to the reference voltage of different threshold values, wherein provide the threshold voltage of comparer of electric signal lower to air exhausting device, provide the threshold values of comparer of electric signal higher to the news Chinese percussion instrument, cutting off control device to source of the gas provides the threshold values of comparer of electric signal the highest.
3. flammable gas alarm as claimed in claim 1, it is characterized in that: described comparer is a voltage comparator, described news Chinese percussion instrument is a voice guard, and it is controllable silicon interlock electromagnetic valve structure that described source of the gas cuts off control device, and described power supply is the on line type UPS D.C. regulated power supply.
4. flammable gas alarm as claimed in claim 3 is characterized in that: the output terminal of described voltage comparator is connected to the current amplifier that triode constitutes.
5. flammable gas alarm as claimed in claim 2, it is characterized in that: the primary structure of described stabilized voltage supply is: by the former edge joint external power of transformer B, the secondary of B meets rectifier bridge D, the positive potential output terminal of rectifier bridge D is divided into duplex feeding, one the tunnel provides charging current through controllable silicon T1 to battery E, another road is through the pin 4 of regulator block 7805 to ic chip 1,8 power supplies, the input voltage of the pin 2 of IC1 is provided by the dividing potential drop of variable resistor PR2, pin 6 input voltages of IC1 are provided by the dividing potential drop of variable resistor PR1, described variable resistor PR1 and PR2 just are being connected across rectifier bridge D, between the negative potential output terminal, be serially connected with regulator block 2950 on the discharge loop of described battery E; The output terminal of described sensor is connected with the in-phase input end of voltage comparator V2, V3, V4, the anti-in-phase input end of V2, V3, V4 connects positive source through resistance respectively, the output signal of voltage comparator V2 is supplied with the gate pole of controllable silicon T3 after triode BG4 amplifies, the output signal of voltage comparator V3 is supplied with news Chinese percussion instrument FM after triode BG2 amplifies; The output signal one tunnel of voltage comparator V4 is supplied with news Chinese percussion instrument FM after triode BG5 amplifies, the gate pole of controllable silicon T2 is given on another road after triode BG3 amplifies, described controllable silicon T3 is serially connected on the current supply circuit of air exhausting device, and described controllable silicon T2 is serially connected on the current supply circuit of solenoid valve KV.
6. flammable gas alarm as claimed in claim 5 is characterized in that: described sensor is the carbon monoxide transducer of MQ312 model, and the model of described ic chip 1 is 555, and the model of described voltage comparator V2, V3, V4 is 324.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01261036 CN2501128Y (en) | 2001-09-07 | 2001-09-07 | Combustible gas alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01261036 CN2501128Y (en) | 2001-09-07 | 2001-09-07 | Combustible gas alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2501128Y true CN2501128Y (en) | 2002-07-17 |
Family
ID=33669057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01261036 Expired - Fee Related CN2501128Y (en) | 2001-09-07 | 2001-09-07 | Combustible gas alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2501128Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494443A (en) * | 2014-12-11 | 2015-04-08 | 重庆凯瑞燃气汽车有限公司 | Intelligent vehicle gas safety control device and control method |
-
2001
- 2001-09-07 CN CN 01261036 patent/CN2501128Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104494443A (en) * | 2014-12-11 | 2015-04-08 | 重庆凯瑞燃气汽车有限公司 | Intelligent vehicle gas safety control device and control method |
| CN104494443B (en) * | 2014-12-11 | 2017-02-01 | 重庆凯瑞燃气汽车有限公司 | Intelligent vehicle gas safety control device and control method |
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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 |