CN100447465C - Pre-warning type bistable gas safety device - Google Patents
Pre-warning type bistable gas safety device Download PDFInfo
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- CN100447465C CN100447465C CNB2005101378831A CN200510137883A CN100447465C CN 100447465 C CN100447465 C CN 100447465C CN B2005101378831 A CNB2005101378831 A CN B2005101378831A CN 200510137883 A CN200510137883 A CN 200510137883A CN 100447465 C CN100447465 C CN 100447465C
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Abstract
The present invention relates to an early warning bistable gas safety device which belongs to household gas safety early warning devices. The present invention aims to prevent gas leakage for double protection in advance and afterwards. The early warning bistable gas safety device comprises an electromagnetic valve mechanism and an alarm mechanism, wherein the electromagnetic valve mechanism comprises a pipeline air pressure detector, an electronic timer and an electromagnetic valve; the electromagnetic valve comprises a central shaft rod, an electromagnetic coil, a casing, a curve end cap and a sealing ring; the alarm mechanism comprises a +6V direct current stabilized voltage power circuit, an air ingredient monitoring circuit, a warning reason indicating circuit, a subsequent delayed output circuit and a buzzer; the +6V direct current stabilized voltage power circuit comprises a transformer, a circuit rectifier and a wave filtering capacitor; the air ingredient monitoring circuit comprises a normal temperature fuel gas sensor, an integrated operational amplifier, resistors, a potential device, a diode and a capacitor; the warning reason indicating circuit comprises a light emitting diode and a triode; the subsequent delayed output circuit comprises resistors, a capacitor, an integrated operational amplifier, a diode and a solid state relay.
Description
Technical field
The present invention relates to a kind of domestic gas safety early warning device.
Background technique:
The modal working method of existing fuel gas alarm is to send sound and light signal after the air composition changes monitoring, drive actuating devices such as ventilation fan or solenoid valve simultaneously, be used for reducing in the air combustable gas concentration and cut off fuel gas source to guarantee user's personal safety as well as the property safety.Its deficiency is that alarm just may be taked action after the gas leakage accident takes place, and along with the increase of service time, the gas-sensing probe aging speed in the air composition monitoring component is fast, if untimely replacing can cause monitoring component wrong report, fail to report.In addition, fatigue aging takes place in seal ring on the used solenoid valve of alarm easily, makes that solenoid valve bad sealing and working life are limited, is a kind of potential safety hazard, the personal safety as well as the property safety that seriously threatens the combustion gas user.
Summary of the invention:
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of have the prevention gas leakage in advance, the pre-warning type bistable gas safety device of double protection functions afterwards.
The present invention includes electromagnetic valve mechanism and alarm mechanism, electromagnetic valve mechanism comprises pipeline air pressure detector, electronic timer and solenoid valve; Solenoid valve comprises central shaft, electromagnetic coil, housing, bend end cap and seal ring; Pipeline air pressure detector is installed in the air-inlet cavity of solenoid valve, and electronic timer is arranged near the central shaft of solenoid valve; On the solenoid valve housing that cooperates with central shaft, seal ring is installed; Alarm mechanism comprises DC-stabilized circuit, air composition observation circuit, warning reason indicating circuit, follow-up time-delay output circuit and buzzer; DC-stabilized circuit comprises transformer, circuit rectifier and filter capacitor; Air composition observation circuit comprises normal temperature type combustible gas sensor and integrated operational amplifier IC2, resistance R 1-R10, potentiometer RX, diode D1-D2, capacitor C3; The warning reason indicating circuit comprises light emitting diode and triode; Follow-up time-delay output circuit comprises resistance R 11-R14, capacitor C4, integrated operational amplifier IC2, diode D6, solid-state relay; Alarm mechanism is connected by power line, lowpressure alarm signal line, overtime alarm signal line and the pulse signal-line that drives solenoid valve with electromagnetic valve mechanism; Divider resistance R12 and R13 are connected into bleeder circuit, and the charging delay circuit that resistance R 11, capacitor C4 are connected into all is connected on IC2 on the integrated operational amplifier, at the diode D6 of the two ends of resistance R 11 reverse parallel connection as the discharge bypass; On one of the solid-state relay output termination power line, another output termination solenoid valve electromagnetic coil, follow-up time-delay output circuit and buzzer are in parallel, and connect the two ends of power supply after being in series with emitter-collector electrode of diode D5, triode Q3 then; The normal temperature type combustible gas sensor is connected the two ends of power supply with load resistance R1 series connection back, be connected on the integrated operational amplifier IC2 through current-limiting resistance R2 again; Follow-up time-delay output circuit and buzzer are together in parallel and are connected the back of warning reason indicating circuit.
Integrated operational amplifier IC2 adopts 14 pin integrated operational amplifier LM324; Divider resistance R12 and R13 are connected into bleeder circuit, be connected on the 3rd pin of integrated operational amplifier IC2, the charging delay circuit that resistance R 11, capacitor C4 are connected into is connected on the 2nd pin of integrated operational amplifier IC2, the output signal of the 1st pin of integrated operational amplifier IC2 links to each other with an input end of solid-state relay behind protective resistance R14, and another input end is connected on the 0V line; The normal temperature type combustible gas sensor is connected the two ends of power supply with load resistance R1 series connection back, be connected to the 5th pin of integrated operational amplifier IC2 again through current-limiting resistance R2; Pipeline air pressure detector, electronic timer and the in-house working power of alarm have+6V power supply electric wire and 0V power supply electric wire; The 4th pin of integrated operational amplifier IC2 is connected on power supply+6V supply lines, and the 11st pin is connected on the 0V supply lines.
Two seal rings are installed on the solenoid valve housing that cooperates with central shaft.Employing+the 6V of alarm mechanism DC-stabilized circuit; The model of normal temperature type combustible gas sensor is TP-1.1A; The model of solid-state relay is D3P-052.The 220V electric main obtains behind+6V DC-stabilized circuit+and the voltage of 6V is connected to air composition observation circuit as power supply.
Solenoid valve is taked the electronic set mode of hand reset, and electromagnetic valve mechanism obtains the needed power supply of its work from alarm mechanism.The damping double sealing structure of two seal ring formation can reduce the frictional force of single seal ring, increase the total frictional force on all seal rings and the central shaft, prolong seal ring working life, and make present position when central shaft is stable to remain on electricly, and keep the state of good seal.
Pipeline air pressure detector is monitored in the pipeline combustion gas air pressure in real time with respect to atmospheric pressure.Just think when setting numerical value and stop the supple of gas or steam in the pipeline when pressure difference value is lower than, sensor sends voltage signal notice alarm, voltage signal is by current-limiting resistance and diode in the alarm mechanism, the base potential of electronic switch (triode) is raise, open electronic switch, by lumination of light emitting diode carry out warning reason prompting, buzzer sound warnings, follow-up delay circuit send certain time length+6V pulse electrical signal driving solenoid valve shuts pipeline.Thereby realize the advanced early warning function of gas leakage.
Utilize combustible gas sensor to monitor the concentration of inflammable gas in the indoor air in real time, when combustable gas concentration reaches predetermined value in the air, the output voltage of alarm mechanism hollow pneumatolytic part observation circuit electric bridge changes the output voltage of output+6V after the over-voltage comparator computing.Voltage signal is by current-limiting resistance and diode in the alarm mechanism, the base potential of electronic switch (triode) is raise, open electronic switch, by lumination of light emitting diode carry out warning reason prompting, buzzer sound warnings, follow-up delay circuit send certain time length+6V pulse electrical signal driving solenoid valve shuts source of the gas.Can prevent to cause the accident because of gas leakage.
Electronic timer is used for monitoring the time that pipeline is ventilated, and is bringing into use the time span that sets before the combustion gas when duration of ventilation surpasses the user, and it is unusual just to think that situation takes place.Electronic timer provides+the 6V signal, and alarm begins to report to the police.
The present invention can with the supporting use of existing family expenses burning appliance.During use electromagnetic valve mechanism is installed on the pipeline behind the gas meter, electromagnetic valve mechanism is responsible for giving alarm mechanism with detected pipeline air pressure signal, electronic timer signal feed back, and receives the pulse action signal that sends from alarm mechanism.The present invention has the advanced early warning function of gas leakage, because unforeseen former thereby cause under the situation of gas leakage, adopt afterwards report to the police, processing mode, farthest guarantee user's personal safety as well as the property safety.Adopt bistable formula structure, prolong the working life of solenoid valve greatly, improve the reliability of solenoid valve.
Description of drawings
Fig. 1 is the structural representation of electromagnetic valve mechanism of the present invention.
Fig. 2 is the circuit theory diagrams of alarm of the present invention mechanism.
Among Fig. 1: 1. solenoid valve suction port, 2. solenoid valve central shaft, 3. electromagnetic coil, 4. pipeline air pressure detector, 5. solenoid valve housing, 6. bend end cap, 7. seal ring, 8. electronic timer, 9. solenoid valve air outlet, 10. bend port, 11. seal rings.
Embodiment
+ 6V DC-stabilized circuit is made up of transformer B, circuit rectifier D, filter capacitor C1 and C2, three terminal regulator IC1.Air composition observation circuit includes normal temperature type combustible gas sensor QM and 14 pin integrated operational amplifier LM324 (IC2), resistance R 1-R10, potentiometer Rx, diode D1-D2, diode D8, capacitor C3.Form the core that the air composition detects.The warning reason indicating circuit includes light emitting diode D3-D5 and triode Q1-Q3.Follow-up time-delay output circuit and buzzer are used for sounding and report to the police and for solenoid valve sends pulse drive signal, mainly be made up of resistance R 11-R14, capacitor C4, IC2, diode D6, buzzer DS1, solid-state relay JDQ.The model of normal temperature type combustible gas sensor is TP-1.1A.Three terminal regulator IC1 model is 7806.
The solenoid valve suction port 1 at solenoid valve housing 5 two ends, air outlet 9 are internal thread interface, or other forms of interface, connect so that join between solenoid valve and output tube.The signal of inflammable gas content overproof provides hypotony prompting, overtime prompting and acousto-optic emergency alarm simultaneously respectively in timeout signal that hypotony signal that alarm mechanism reception pipeline air pressure detector is sent here and electronic timer are sent here and the detected air of the gas sensing member in the alarm.
Three toggle switches of electronic timer panel indicate " 15 minutes ", " 25 minutes ", " 40 minutes " respectively, and are provided with two toggle switches of " beginning ", " stopping " two positions.Use integration circuit as timing unit in the time circuit.The user is provided with time span by three toggle switch electronic timers before use in advance, dials two-position switch then to " beginning " position, the work that picks up counting of whole electronic timer circuit.The time of opening combustion gas as the user reaches Preset Time length, then the output voltage of integration circuit is higher than the reference voltage of voltage comparator end of oppisite phase, the voltage comparator output terminal sends voltage signal, this signal is by current-limiting resistance and diode in the alarm mechanism, and the base potential of electronic switch (triode) is raise, open electronic switch, by lumination of light emitting diode carry out warning reason prompting, buzzer sound warnings, follow-up delay circuit send certain time length+6V pulse electrical signal driving solenoid valve shuts source of the gas.
The 220VAC civil power through transformer B, rectifier bridge D, filter capacitor C1, IC1, filter capacitor C2, after obtain+DC electrical source of 6V.With IC2 is main first voltage comparator of forming, the bleeder circuit that divider resistance R12 and R13 are connected into inputs to the 2nd pin that signal that the 3rd pin, the resistance R 11 of IC2 and charging delay circuit that capacitor C4 is connected into generate inputs to IC2 with the voltage signal that generates, and at the two ends of R11 reverse parallel connection diode D6 as the discharge bypass diode.The output signal of the 1st pin of IC2 is linked to each other with the input end of solid-state relay JDQ behind protective resistance R14, and another input end is connected on the 0V line.Output termination+6V the power supply of solid-state relay JDQ, another output termination solenoid valve electromagnetic coil 3.Thereby drive output is common to be constituted the pulse signal that being used to when warning takes place drive the certain time length of solenoid valve and sends circuit.This circuit and buzzer DS1 are in parallel, and connect after emitter-collector electrode of back in parallel and diode D5 triode Q3 is in series+two ends of 6V power supply.Diode D7, R0 are in series afterwards and the electromagnetic coil reverse parallel connection of solenoid valve.
Normal temperature type combustible gas sensor QM is the critical piece of monitoring indoor gas composition, be connected in after load resistance R1 connects+two ends of 6V power supply, and its output signal is connected to the 5th pin of IC2 through current-limiting resistance R2.By being parallel to both ends of power after divider resistance R4, R5, the potentiometer Rx series connection, forming reference voltage generating circuit provides reference voltage for voltage comparator, and its output is received the 6th pin of IC2.R6 is series at and constitutes the hysteresis voltage comparator between the 5th pin of IC2 and the 6th pin.The 4th pin of IC2 is connected on power supply+6V line, and the 11st pin is connected on the 0V supply lines.Form R C charging delay circuit by R7, C3 the signal that generates is inputed to the 10th pin of IC2, divider resistance R8 connects with R9 and the voltage that obtains is exported to after the dividing potential drop the 9th pin of IC2, and Series Sheet is to the diode D1 of conducting between the 8th pin of IC2 and the 5th pin.At the two ends of R8 reverse parallel connection diode D2.Light emitting diode D4 connects with emitter-collector electrode of Q2, light emitting diode D3 connects with emitter-collector electrode of Q1, more than the series circuit formed of two branch roads and D5-Q3 be in parallel.The 7th pin of IC2 is connected with the base stage of triode Q3 through protective resistance R10, diode D8.
Pipeline air pressure detector circuit is made up of two toggle switch K1, IC3, resistance R 15-R27, potentiometer Rx1-Rx2, gas sensor CGQ, diode D9.Whole pipeline air pressure detector circuit with+6V pressure-wire and 0V power supply electric wire as power supply.K1 is the switch whether whole pressure monitoring circuit connects power supply.CGQ is the CYX030A pressure transducer of gas pressure in the monitoring pipeline.The 1st pin to the 3 pin and the 5th pin to the 10 pin by R15-R22 and Rx1, IC3 are formed " the instrument amplification circuit " with 100 times of left and right sides enlarging functions.The 4th pin of IC3 is connected on power supply+6V line, and the 11st pin is connected on the 0V power supply electric wire.The output terminal of the input termination CGQ of instrument amplification circuit.The output terminal of instrument amplification circuit is connected to the 12nd pin of IC3 through protective resistance R23.After divider resistance R24, Rx2, the R25 series connection, the signal that obtains is inputed to the 13rd pin of IC3.The resistance R 26 of connecting between the 12nd pin of IC3 and the 14th pin constitutes the hysteresis voltage comparators.14 pin of IC3 are connected to the base stage of Q2 with after R27, D9 connect.The solid-state relay model is D3P-052.IC3 is 14 pin integrated operational amplifier LM324.
Electronic timer circuit includes two toggle switch K2, three toggle switch K3, IC4, diode D10, resistance R 28-R35, potentiometer Rx4-Rx6 and capacitor C5.Electronic timer with+6V pressure-wire and 0V power supply electric wire as power supply.K switch 2 is toggle switches of two conductings, K switch 3 be can three conductings toggle switch.The position of K2 is whether whole electronic timer circuit connects power supply, and when being allocated to the another one position to whole electronic timer circuit outage, and the electric charge on capacitor C5 the two poles of the earth given zero clearing by current-limiting resistance R35.The the 1st to 3 pin by R28, R29, capacitor C5, IC4 constitutes integration circuit.The 1st pin of IC4 links to each other with the 5th pin.Connect by divider resistance R30, Rx6, divider resistance R31, Rx5 series connection, in parallel with the back that is in series, three groups of contacts of three toggle switch K3 respectively after divider resistance R32, the Rx4 series connection, back in parallel and divider resistance R33 back and the 0V electric wire formation bleeder circuit that links of powering that is in series.The voltage signal of bleeder circuit output is exported to the 6th pin with IC4 as the reference voltage signal.The 7th pin of IC4 through with current-limiting resistance R34, D10 the series connection after be connected with the base stage of Q1.IC4 is 14 pin integrated operational amplifier LM324.
Claims (6)
1. a pre-warning type bistable gas safety device is characterized in that including electromagnetic valve mechanism and alarm mechanism, and electromagnetic valve mechanism comprises pipeline air pressure detector, electronic timer and solenoid valve; Solenoid valve comprises central shaft, electromagnetic coil, housing, bend end cap and seal ring; Pipeline air pressure detector is installed in the air-inlet cavity of solenoid valve, and electronic timer is arranged near the central shaft of solenoid valve; On the solenoid valve housing that cooperates with central shaft, seal ring is installed; Alarm mechanism comprises DC-stabilized circuit, air composition observation circuit, warning reason indicating circuit, follow-up time-delay output circuit and buzzer; DC-stabilized circuit comprises transformer, circuit rectifier and filter capacitor; Air composition observation circuit comprises normal temperature type combustible gas sensor and integrated operational amplifier IC2, resistance R 1-R10, potentiometer RX, diode D1-D2, capacitor C3; The warning reason indicating circuit comprises light emitting diode and triode; Follow-up time-delay output circuit comprises resistance R 11-R14, capacitor C4, integrated operational amplifier IC2, diode D6, solid-state relay; Alarm mechanism is connected by power line, lowpressure alarm signal line, overtime alarm signal line and the pulse signal-line that drives solenoid valve with electromagnetic valve mechanism; Divider resistance R12 and R13 are connected into bleeder circuit, and the charging delay circuit that resistance R 11, capacitor C4 are connected into all is connected on the integrated operational amplifier IC2, at the diode D6 of the two ends of resistance R 11 reverse parallel connection as the discharge bypass; On the output termination power line of solid-state relay, another output termination solenoid valve electromagnetic coil; Follow-up time-delay output circuit and buzzer are in parallel, and connect the two ends of power supply after being in series with emitter-collector electrode of diode D5, triode Q3 then; The normal temperature type combustible gas sensor is connected the two ends of power supply with load resistance R1 series connection back, be connected on the integrated operational amplifier IC2 through current-limiting resistance R2 again; Follow-up time-delay output circuit and buzzer are together in parallel and are connected the back of warning reason indicating circuit.
2. pre-warning type bistable gas safety device as claimed in claim 1 is characterized in that integrated operational amplifier IC2 adopts 14 pin integrated operational amplifier LM324; Divider resistance R12 and R13 are connected into bleeder circuit, be connected on the 3rd pin of integrated operational amplifier IC2, the charging delay circuit that resistance R 11, capacitor C4 are connected into is connected on the 2nd pin of integrated operational amplifier IC2, the output signal of the 1st pin of integrated operational amplifier IC2 links to each other with an input end of solid-state relay behind protective resistance R14, and another input end is connected on the 0V line; The normal temperature type combustible gas sensor is connected the two ends of power supply with load resistance R1 series connection back, be connected to the 5th pin of integrated operational amplifier IC2 again through current-limiting resistance R2; Pipeline air pressure detector, electronic timer and the in-house working power of alarm have+6V power supply electric wire and 0V power supply electric wire; The 4th pin of integrated operational amplifier IC2 is connected on power supply+6V supply lines, and the 11st pin is connected on the 0V supply lines.
3. pre-warning type bistable gas safety device as claimed in claim 1 or 2 is characterized in that being equipped with two seal rings on the solenoid valve housing that cooperates with central shaft.
4. pre-warning type bistable gas safety device as claimed in claim 1 or 2, the model that it is characterized in that the normal temperature type combustible gas sensor is TP-1.1A.
5. pre-warning type bistable gas safety device as claimed in claim 1 or 2, the model that it is characterized in that solid-state relay is D3P-052.
6. pre-warning type bistable gas safety device as claimed in claim 1 or 2 is characterized in that the employing+6V of alarm mechanism DC-stabilized circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101378831A CN100447465C (en) | 2005-12-28 | 2005-12-28 | Pre-warning type bistable gas safety device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101378831A CN100447465C (en) | 2005-12-28 | 2005-12-28 | Pre-warning type bistable gas safety device |
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| Publication Number | Publication Date |
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| CN1804446A CN1804446A (en) | 2006-07-19 |
| CN100447465C true CN100447465C (en) | 2008-12-31 |
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| CNB2005101378831A Expired - Fee Related CN100447465C (en) | 2005-12-28 | 2005-12-28 | Pre-warning type bistable gas safety device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242886A (en) * | 2014-09-23 | 2014-12-24 | 苏州市艾能达电子科技有限公司 | Anti-explosion time delay switch for safety voltage |
| CN105736712B (en) * | 2016-05-04 | 2017-11-14 | 四川海力智能科技股份有限公司 | Stop the supple of gas or steam mechanical self-locking motor valve for gas meter |
| CN105782462A (en) * | 2016-05-04 | 2016-07-20 | 四川海力智能科技股份有限公司 | Gas-stopping gas meter self-locking electric machinery valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5261268A (en) * | 1991-03-14 | 1993-11-16 | Agency Of Industrial Science & Technology, Ministry Of International Trade & Industry | Gas leak detection system |
| JPH08271296A (en) * | 1995-03-31 | 1996-10-18 | Tokyo Gas Co Ltd | Detecting equipment of gas leakage |
| CN2358328Y (en) * | 1998-01-20 | 2000-01-12 | 华南理工大学 | Safety valve for pipeline gas |
| CN2383164Y (en) * | 1999-07-13 | 2000-06-14 | 张杰龙 | Safety automatic monitor for gas leakage |
| CN2442332Y (en) * | 2000-08-04 | 2001-08-08 | 谌冠卿 | Gas leakage automatic protector for gas equipment |
| CN2450728Y (en) * | 2000-08-31 | 2001-09-26 | 陈荣松 | Gas safety protection (protector) alarm device |
| CN2605619Y (en) * | 2003-02-19 | 2004-03-03 | 高伟 | Combustible gas automatic monitoring alarm |
-
2005
- 2005-12-28 CN CNB2005101378831A patent/CN100447465C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5261268A (en) * | 1991-03-14 | 1993-11-16 | Agency Of Industrial Science & Technology, Ministry Of International Trade & Industry | Gas leak detection system |
| JPH08271296A (en) * | 1995-03-31 | 1996-10-18 | Tokyo Gas Co Ltd | Detecting equipment of gas leakage |
| CN2358328Y (en) * | 1998-01-20 | 2000-01-12 | 华南理工大学 | Safety valve for pipeline gas |
| CN2383164Y (en) * | 1999-07-13 | 2000-06-14 | 张杰龙 | Safety automatic monitor for gas leakage |
| CN2442332Y (en) * | 2000-08-04 | 2001-08-08 | 谌冠卿 | Gas leakage automatic protector for gas equipment |
| CN2450728Y (en) * | 2000-08-31 | 2001-09-26 | 陈荣松 | Gas safety protection (protector) alarm device |
| CN2605619Y (en) * | 2003-02-19 | 2004-03-03 | 高伟 | Combustible gas automatic monitoring alarm |
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| CN1804446A (en) | 2006-07-19 |
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