CN204315042U - A kind of natural gas detection alarm system - Google Patents
A kind of natural gas detection alarm system Download PDFInfo
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- CN204315042U CN204315042U CN201420708293.4U CN201420708293U CN204315042U CN 204315042 U CN204315042 U CN 204315042U CN 201420708293 U CN201420708293 U CN 201420708293U CN 204315042 U CN204315042 U CN 204315042U
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Abstract
The utility model discloses a kind of natural gas detection alarm system, it is characterized in that: by gas sensor (5), light emitting diode VL, hummer (8), exhaust fan (1), transformer T, the current rectifying and wave filtering circuit (2) be connected with transformer T secondary, the protection circuit (3) be connected with current rectifying and wave filtering circuit (2) output terminal, the testing circuit (4) be connected with protection circuit (3), the bistable trigger-action circuit (6) be connected with testing circuit (4), the multi-resonant oscillating circuit (7) be connected with bistable trigger-action circuit (6), and the relay K composition be arranged in bistable trigger-action circuit (6), described gas sensor (5) is connected with testing circuit (4), light emitting diode VL is all connected with the output terminal of multi-resonant oscillating circuit (7) with hummer (8), and exhaust fan (1) is serially connected with after connecting with the normally opened contact K1 of relay K between the former limit of transformer T.The utility model can avoid system to report by mistake when switching on power, and reduces the loss brought because misreport of system is alert, can also be changed the sensitivity of gas sensor simultaneously, thus make system be applicable to different environment by the resistance of adjustment potentiometer.
Description
Technical field
The utility model relates to a kind of detection system, specifically refers to a kind of natural gas detection alarm system.
Background technology
The popularization and improvement of the combustion gas production efficiency of people, quality of life.But in the process using combustion gas, the gas explosion caused because of the reason such as gas leakage, waste gas, the mishap such as poisoning happen occasionally, and bring serious threat to the safety of life and property of people.Therefore, the most important thing that combustion gas is the work of combustion gas competent authorities is always used safely.Gas sensor can effectively detect gas to be checked in the environment there is situation, it, by interface circuit composition detection alarm system, can be reported to the police timely when there is gas leakage, avoiding the generation of mishap.
In existing detection alarm system, because gas sensor is when just switching on power, even if be in fresh air, its potential electrode also can export the voltage of certain amplitude, thus triggering alarm system, cause erroneous judgement to bring unnecessary trouble to people.How to solve the problem, make detection be more accurately that people are badly in need of solving.
Utility model content
The purpose of this utility model is to overcome current gas sensor there will be false alarm defect when just switching on power, provide a kind of and can improve accuracy of detection, avoid reporting by mistake natural gas detection alarm system.
The purpose of this utility model is achieved through the following technical solutions: a kind of natural gas detection alarm system; by gas sensor; light emitting diode VL; hummer; exhaust fan; transformer T; the current rectifying and wave filtering circuit be connected with transformer T secondary; the protection circuit be connected with rectification filter circuit output end; the testing circuit be connected with protection circuit; the bistable trigger-action circuit be connected with testing circuit, the multi-resonant oscillating circuit be connected with bistable trigger-action circuit, and be arranged on the relay K composition in bistable trigger-action circuit.Described gas sensor is connected with testing circuit, and light emitting diode VL and hummer are all connected with the output terminal of multi-resonant oscillating circuit, and exhaust fan is serially connected with after connecting with the normally opened contact K1 of relay K between the former limit of transformer T.
Further, described current rectifying and wave filtering circuit is made up of diode bridge rectifier U and electric capacity C9.Diode bridge rectifier U is serially connected with between the secondary of transformer T, and electric capacity C9 is serially connected with between two output terminals of diode bridge rectifier U.
Further, described protection circuit is by resistance R16, and resistance R17, resistance R18, electric capacity C6, electric capacity C7, electric capacity C8 and thyristor D2 form.Thyristor D2 and electric capacity C9 is in parallel, and resistance R16 and electric capacity C7 is in parallel, and one is jointly held and is connected with the P pole of thyristor D2 after resistance R17, and another is jointly held and is then connected with the negative pole of electric capacity C6; The positive pole of electric capacity C6 is connected with the control pole of thyristor D2 after resistance R18, negative pole is then connected with the N pole of thyristor D2, and one end of electric capacity C8 is connected with the control pole of thyristor D2, the other end is connected with the N pole of thyristor D2; The positive pole of described electric capacity C7 is connected with testing circuit, and positive pole, the negative pole of electric capacity C6 are all connected with testing circuit.
Described testing circuit is made up of delay circuit and comparator circuit.Described delay circuit comprises operation amplifier chip A1, triode VT3, resistance R14, resistance R15, electric capacity C5.The base stage of triode VT3 is connected with the OUT pin of operation amplifier chip A1 after resistance R14, and collector is connected with comparator circuit, and emitter is connected with the negative pole of electric capacity C6; One end of resistance R15 is connected with the positive pole of comparator circuit with electric capacity C7 respectively, and the other end is connected with the negative pole of electric capacity C6 after electric capacity C5; The VCC pin of described operation amplifier chip A1 is connected with the tie point of comparator circuit with resistance R15, and its IN1 pin is connected with the positive pole of electric capacity C6, and IN2 pin is connected with the tie point of resistance R15 with electric capacity C5, GND pin ground connection.
Described comparator circuit is by resistance R, and resistance R1, resistance R2, resistance R3, potentiometer R4, resistance R5, electric capacity C1 and operation amplifier chip A2 form.One end of resistance R3 is connected with bistable trigger-action circuit after resistance R through potentiometer R4, the other end be connected with bistable trigger-action circuit with the VCC pin of operation amplifier chip A1 respectively, between the negative pole that resistance R5 is serially connected with operation amplifier chip A2 and output stage, the positive pole of described operation amplifier chip A2 is connected with the sliding end of potentiometer R4, negative pole is connected with the VCC pin of operation amplifier chip A1 after gas sensor through resistance R2, output stage is connected with bistable trigger-action circuit, one end of resistance R1 is connected with the tie point of gas sensor with resistance R2, the other end is connected with bistable trigger-action circuit with resistance R, the positive pole of electric capacity C1 is connected with the tie point of gas sensor with resistance R3, other end ground connection, the negative pole of described operation amplifier chip A2 is also connected with the collector of triode VT3.
Described bistable trigger-action circuit comprises resistance R6, resistance R7, resistance R8, resistance R9, triode VT1, triode VT2, diode D1, relay K; Diode D1 and relay K are in parallel, and one is jointly held and is connected with multi-resonant oscillating circuit with the positive pole of electric capacity C1 respectively, and another is jointly held and is connected with the collector of triode VT2; The base stage of described triode VT2 is connected with the collector of triode VT1 after resistance R8, and emitter is connected with the emitter of triode VT1; The base stage of triode VT1 is connected with multi-resonant oscillating circuit with the output stage of dual operational amplifier A2 respectively, and collector is connected with the positive pole of electric capacity C1 after resistance R6, and emitter is connected with the base stage of triode VT2 after resistance R9 through resistance R7; The tie point of resistance R7 and resistance R9 is connected with the tie point of resistance R1 and resistance R and multi-resonant oscillating circuit respectively.
Described multi-resonant oscillating circuit is by the chip U1 that vibrates, one end is connected with the N pole of diode D1, the resistance R10 that the other end is connected with the tie point of resistance R9 with resistance R7 after electric capacity C2 through resistance R11, one end is connected with the RE pin of vibration chip U1, the resistance R12 that the other end is connected with the base stage of triode VT1, one end is connected with the VCC pin of vibration chip U1, the resistance R13 of other end ground connection after light emitting diode VL, one end is connected with the OUT pin of vibration chip U1, the electric capacity C4 that the other end is connected with the negative pole of electric capacity C2 after hummer, and one end is connected with the CONT pin of vibration chip U1, the electric capacity C3 that the other end is connected with the negative pole of electric capacity C2 forms, the described VCC pin of vibration chip U1 is connected with the N pole of diode D1, and its THRES pin is all connected with the tie point of electric capacity C2 with resistance R11 with TRIG pin, and DISCH pin is connected with the tie point of resistance R11 with resistance R10, GND pin ground connection.
The utility model comparatively prior art is compared, and has the following advantages and beneficial effect:
(1) the utility model is compared with prior art provided with delay circuit in its testing circuit, avoiding system to report by mistake when switching on power by the effect of delay circuit, reducing the loss brought because misreport of system is alert.
(2) be provided with potentiometer in comparator circuit of the present utility model, the sensitivity of gas sensor can be changed by the resistance adjusting potentiometer, thus make system be applicable to different environment.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
As shown in Figure 1; natural gas detection alarm system of the present utility model; by gas sensor 5; light emitting diode VL; hummer 8; exhaust fan 1; transformer T; the current rectifying and wave filtering circuit 2 be connected with transformer T secondary; the protection circuit 3 be connected with current rectifying and wave filtering circuit 2 output terminal, the testing circuit 4 be connected with protection circuit 3, the bistable trigger-action circuit 6 be connected with testing circuit 4; the multi-resonant oscillating circuit 7 be connected with bistable trigger-action circuit 6, and be arranged on the relay K composition in bistable trigger-action circuit 6.Described gas sensor 5 is connected with testing circuit 4, and light emitting diode VL is all connected with the output terminal of multi-resonant oscillating circuit 7 with hummer 8, and exhaust fan 1 is serially connected with after connecting with the normally opened contact K1 of relay K between the former limit of transformer T.In order to better realize the utility model, described gas sensor 5 is preferably QM-N5.
Further, transformer T exports to current rectifying and wave filtering circuit 2 after the line voltage of 220V is carried out transformation.Described current rectifying and wave filtering circuit 2 is made up of diode bridge rectifier U and electric capacity C9.By diode bridge rectifier U, the alternating current that transformer T exports is become direct current, then after carrying out filtering by electric capacity C9, become smooth-going direct current output.During connection, diode bridge rectifier U is serially connected with between the secondary of transformer T, and electric capacity C9 is serially connected with between two output terminals of diode bridge rectifier U, and the two ends of electric capacity C9 are also connected with protection circuit.
In order to prevent city's electro-mechanical wave, or during overtension, damage being caused to system, in system, being provided with protection circuit 3.Described protection circuit 3 is by resistance R16, and resistance R17, resistance R18, electric capacity C6, electric capacity C7, electric capacity C8 and thyristor D2 form.Thyristor D2 and electric capacity C9 is in parallel, and resistance R16 and electric capacity C7 is in parallel, and one is jointly held and is connected with the P pole of thyristor D2 after resistance R17, and another is jointly held and is then connected with the negative pole of electric capacity C6; The positive pole of electric capacity C6 is connected with the control pole of thyristor D2 after resistance R18, negative pole is then connected with the N pole of thyristor D2, and one end of electric capacity C8 is connected with the control pole of thyristor D2, the other end is connected with the N pole of thyristor D2; The positive pole of described electric capacity C7 is connected with testing circuit 4, and positive pole, the negative pole of electric capacity C6 are all connected with testing circuit 4.
Testing circuit 4 is emphasis place of the present utility model, and its inside is divided into delay circuit and comparator circuit.Described delay circuit is by operation amplifier chip A1, triode VT3, the resistance R14 that one end is connected with the base stage of triode VT3, the other end is connected with the OUT pin of operation amplifier chip A1, the resistance R15 that one end is connected with the positive pole of electric capacity C7 with the VCC pin of operation amplifier chip A1 respectively, the other end is connected with the negative pole of electric capacity C6 with the emitter of triode VT3 respectively after electric capacity C5 forms.The collector of described triode VT3 is connected with comparator circuit.The VCC pin of operation amplifier chip A1 is connected with comparator circuit, and its IN1 pin is connected with the positive pole of electric capacity C6, and IN2 pin is connected with the tie point of resistance R15 with electric capacity C5, GND pin ground connection.The situation of false alarm can not be there is when system just being switched on power by the effect of delay circuit.
Described comparator circuit is by resistance R, and resistance R1, resistance R2, resistance R3, potentiometer R4, resistance R5, electric capacity C1 and operation amplifier chip A2 form.Wherein operation amplifier chip A2, resistance R3, potentiometer R4, resistance R form comparer.During connection, one end of resistance R3 is connected with bistable trigger-action circuit 6 after resistance R through potentiometer R4, the other end be connected with bistable trigger-action circuit with the VCC pin of operation amplifier chip A1 respectively, between the negative pole that resistance R5 is serially connected with operation amplifier chip A2 and output stage, the positive pole of described operation amplifier chip A2 is connected with the sliding end of potentiometer R4, negative pole is connected with the VCC pin of operation amplifier chip A1 after gas sensor 5 through resistance R2, output stage is connected with bistable trigger-action circuit 6, one end of resistance R1 is connected with the tie point of gas sensor 5 with resistance R2, the other end is connected with bistable trigger-action circuit 6 with resistance R, the positive pole of electric capacity C1 is connected with the tie point of gas sensor 5 with resistance R3, other end ground connection, the negative pole of described operation amplifier chip A2 is also connected with the collector of triode VT3.Described operation amplifier chip A2 and operation amplifier chip A1 forms dual operational amplifier.
Described bistable trigger-action circuit 6 comprises resistance R6, resistance R7, resistance R8, resistance R9, triode VT1, triode VT2, diode D1, relay K.During connection, diode D1 and relay K are in parallel, and one is jointly held and is connected with multi-resonant oscillating circuit 7 with the positive pole of electric capacity C1 respectively, and another is jointly held and is connected with the collector of triode VT2; The base stage of described triode VT2 is connected with the collector of triode VT1 after resistance R8, and emitter is connected with the emitter of triode VT1; The base stage of triode VT1 is connected with multi-resonant oscillating circuit 7 with the output stage of dual operational amplifier A2 respectively, and collector is connected with the positive pole of electric capacity C1 after resistance R6, and emitter is connected with the base stage of triode VT2 after resistance R9 through resistance R7; The tie point of resistance R7 and resistance R9 is connected with the tie point of resistance R1 and resistance R and multi-resonant oscillating circuit 7 respectively.Make its normally opened contact close as trigger relay K, exhaust fan 1 works outside sky combustion discharge chamber.
When natural gas occurs to reveal, in order to the people near alerting signal notice also can be sent while exhaust fan 1 works, in system, be provided with multi-resonant oscillating circuit 7.Described multi-resonant oscillating circuit 7 is by vibration chip U1, one end is connected with the N pole of diode D1, the resistance R10 that the other end is connected with the tie point of resistance R9 with resistance R7 after electric capacity C2 through resistance R11, one end is connected with the RE pin of vibration chip U1, the resistance R12 that the other end is connected with the base stage of triode VT1, one end is connected with the VCC pin of vibration chip U1, the resistance R13 of other end ground connection after light emitting diode VL, one end is connected with the OUT pin of vibration chip U1, the electric capacity C4 that the other end is connected with the negative pole of electric capacity C2 after hummer 8, and one end is connected with the CONT pin of vibration chip U1, the electric capacity C3 that the other end is connected with the negative pole of electric capacity C2 forms, the described VCC pin of vibration chip U1 is connected with the N pole of diode D1, and its THRES pin is all connected with the tie point of electric capacity C2 with resistance R11 with TRIG pin, and DISCH pin is connected with the tie point of resistance R11 with resistance R10, GND pin ground connection.
During work, when gas sensor 5 has detected that natural gas is revealed, its resistance has reduced rapidly, and the voltage of resistance R1 increases.When voltage reaches the upper voltage limit of the comparer be made up of operation amplifier chip A2, resistance R3, potentiometer R4, resistance R, the output stage of operation amplifier chip A2 exports high level, turn-on transistor VT1 and triode VT2, thus trigger relay K makes its normally opened contact K1 close, exhaust fan 1 works outside the natural gas discharge chamber revealed.Meanwhile, another road electric current then flows to multi-resonant oscillating circuit 7 through resistance R12, and multi-resonant oscillating circuit 7 starts starting of oscillation and drives hummer 8 to send alerting signal, and light emitting diode VL lights simultaneously, notifies that people check natural gas pipe.
Gas sensor 5, when just switching on power, also can export certain amplitude voltage cause misreport of system alert even if be in its potential electrode in fresh air.Owing to being provided with delay circuit in system, when just switching on power, electric capacity C5 both end voltage can not be suddenlyd change, the OUT pin of operation amplifier chip A1 exports high level, turn-on transistor VT3, make the negative pole shorted to earth of operation amplifier chip A2, now system can not produce erroneous judgement action.When electric capacity C5 charges, when voltage rises to 2/3 supply voltage gradually, the OUT pin output low level of operation amplifier chip A1, triode VT3 ends, thus removes the blockade to operation amplifier chip A2 negative pole, for next step normal monitoring, alarming is prepared.
As mentioned above, just well the utility model can be realized.
Claims (6)
1. a natural gas detection alarm system, it is characterized in that: by gas sensor (5), light emitting diode VL, hummer (8), exhaust fan (1), transformer T, the current rectifying and wave filtering circuit (2) be connected with transformer T secondary, the protection circuit (3) be connected with current rectifying and wave filtering circuit (2) output terminal, the testing circuit (4) be connected with protection circuit (3), the bistable trigger-action circuit (6) be connected with testing circuit (4), the multi-resonant oscillating circuit (7) be connected with bistable trigger-action circuit (6), and the relay K composition be arranged in bistable trigger-action circuit (6), described gas sensor (5) is connected with testing circuit (4), light emitting diode VL is all connected with the output terminal of multi-resonant oscillating circuit (7) with hummer (8), and exhaust fan (1) is serially connected with after connecting with the normally opened contact K1 of relay K between the former limit of transformer T.
2. a kind of natural gas detection alarm system according to claim 1, is characterized in that: described current rectifying and wave filtering circuit (2) is made up of diode bridge rectifier U and electric capacity C9; Diode bridge rectifier U is serially connected with between the secondary of transformer T, and electric capacity C9 is serially connected with between two output terminals of diode bridge rectifier U.
3. a kind of natural gas detection alarm system according to claim 2, is characterized in that: described protection circuit (3) is by resistance R16, and resistance R17, resistance R18, electric capacity C6, electric capacity C7, electric capacity C8 and thyristor D2 form; Thyristor D2 and electric capacity C9 is in parallel, and resistance R16 and electric capacity C7 is in parallel, and one is jointly held and is connected with the P pole of thyristor D2 after resistance R17, and another is jointly held and is then connected with the negative pole of electric capacity C6; The positive pole of electric capacity C6 is connected with the control pole of thyristor D2 after resistance R18, negative pole is then connected with the N pole of thyristor D2, and one end of electric capacity C8 is connected with the control pole of thyristor D2, the other end is connected with the N pole of thyristor D2; The positive pole of described electric capacity C7 is connected with testing circuit (4), and positive pole, the negative pole of electric capacity C6 are all connected with testing circuit (4).
4. a kind of natural gas detection alarm system according to claim 3, is characterized in that: described testing circuit (4) is made up of delay circuit and comparator circuit; Described delay circuit comprises operation amplifier chip A1, triode VT3, resistance R14, resistance R15, electric capacity C5; The base stage of triode VT3 is connected with the OUT pin of operation amplifier chip A1 after resistance R14, and collector is connected with comparator circuit, and emitter is connected with the negative pole of electric capacity C6; One end of resistance R15 is connected with the positive pole of comparator circuit with electric capacity C7 respectively, and the other end is connected with the negative pole of electric capacity C6 after electric capacity C5; The VCC pin of described operation amplifier chip A1 is connected with the tie point of comparator circuit with resistance R15, and its IN1 pin is connected with the positive pole of electric capacity C6, and IN2 pin is connected with the tie point of resistance R15 with electric capacity C5, GND pin ground connection;
Described comparator circuit is by resistance R, and resistance R1, resistance R2, resistance R3, potentiometer R4, resistance R5, electric capacity C1 and operation amplifier chip A2 form; One end of resistance R3 is connected with bistable trigger-action circuit (6) after resistance R through potentiometer R4, the other end is connected with bistable trigger-action circuit with the VCC pin of operation amplifier chip A1 respectively, between the negative pole that resistance R5 is serially connected with operation amplifier chip A2 and output stage; The positive pole of described operation amplifier chip A2 is connected with the sliding end of potentiometer R4, its negative pole is connected with the VCC pin of operation amplifier chip A1 after gas sensor (5) through resistance R2, and its output stage is connected with bistable trigger-action circuit (6); One end of resistance R1 is connected with the tie point of resistance R2 with gas sensor (5), the other end is connected with bistable trigger-action circuit (6) with resistance R, the positive pole of electric capacity C1 is connected with the tie point of resistance R3 with gas sensor (5), other end ground connection, and the negative pole of described operation amplifier chip A2 is also connected with the collector of triode VT3.
5. a kind of natural gas detection alarm system according to claim 4, is characterized in that: described bistable trigger-action circuit (6) comprises resistance R6, resistance R7, resistance R8, resistance R9, triode VT1, triode VT2, diode D1; Diode D1 and relay K are in parallel, and one is jointly held and is connected with multi-resonant oscillating circuit (7) with the positive pole of electric capacity C1 respectively, and another is jointly held and is connected with the collector of triode VT2; The base stage of described triode VT2 is connected with the collector of triode VT1 after resistance R8, and emitter is connected with the emitter of triode VT1; The base stage of triode VT1 is connected with multi-resonant oscillating circuit (7) with the output stage of dual operational amplifier A2 respectively, collector is connected with the positive pole of electric capacity C1 after resistance R6, and emitter is connected with the base stage of triode VT2 after resistance R9 through resistance R7; The tie point of resistance R7 and resistance R9 is connected with the tie point of resistance R1 and resistance R and multi-resonant oscillating circuit (7) respectively.
6. a kind of natural gas detection alarm system according to claim 5, it is characterized in that: described multi-resonant oscillating circuit (7) is by vibration chip U1, one end is connected with the N pole of diode D1, the resistance R10 that the other end is connected with the tie point of resistance R9 with resistance R7 after electric capacity C2 through resistance R11, one end is connected with the RE pin of vibration chip U1, the resistance R12 that the other end is connected with the base stage of triode VT1, one end is connected with the VCC pin of vibration chip U1, the resistance R13 of other end ground connection after light emitting diode VL, one end is connected with the OUT pin of vibration chip U1, the electric capacity C4 that the other end is connected with the negative pole of electric capacity C2 after hummer (8), and one end is connected with the CONT pin of vibration chip U1, the electric capacity C3 that the other end is connected with the negative pole of electric capacity C2 forms, the described VCC pin of vibration chip U1 is connected with the N pole of diode D1, and its THRES pin is all connected with the tie point of electric capacity C2 with resistance R11 with TRIG pin, and DISCH pin is connected with the tie point of resistance R11 with resistance R10, GND pin ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708293.4U CN204315042U (en) | 2014-11-22 | 2014-11-22 | A kind of natural gas detection alarm system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708293.4U CN204315042U (en) | 2014-11-22 | 2014-11-22 | A kind of natural gas detection alarm system |
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| CN204315042U true CN204315042U (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420708293.4U Expired - Fee Related CN204315042U (en) | 2014-11-22 | 2014-11-22 | A kind of natural gas detection alarm system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952217A (en) * | 2014-11-22 | 2015-09-30 | 成都颉盛科技有限公司 | High-sensitivity gas detection and alarm system based on phase-sensitive detection circuit |
| CN106710155A (en) * | 2017-02-10 | 2017-05-24 | 吉安市井开区吉军科技有限公司 | Combustible gas leakage alarm circuit |
| CN108240556A (en) * | 2016-12-26 | 2018-07-03 | 天津市科瑞燃气设备有限公司 | A kind of gas leakage processing unit |
-
2014
- 2014-11-22 CN CN201420708293.4U patent/CN204315042U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104952217A (en) * | 2014-11-22 | 2015-09-30 | 成都颉盛科技有限公司 | High-sensitivity gas detection and alarm system based on phase-sensitive detection circuit |
| CN108240556A (en) * | 2016-12-26 | 2018-07-03 | 天津市科瑞燃气设备有限公司 | A kind of gas leakage processing unit |
| CN106710155A (en) * | 2017-02-10 | 2017-05-24 | 吉安市井开区吉军科技有限公司 | Combustible gas leakage alarm circuit |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Super joint energy technology (Beijing) Co., Ltd. Assignor: Magnificent (Beijing) the energy-conservation Science and Technology Ltd. of middle energy generation Contract record no.: 2015990000603 Denomination of utility model: Natural gas detecting and alarming system Granted publication date: 20150506 License type: Exclusive License Record date: 20150714 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Super joint energy technology (Beijing) Co., Ltd. Assignor: Magnificent (Beijing) the energy-conservation Science and Technology Ltd. of middle energy generation Contract record no.: 2015990000603 Date of cancellation: 20151203 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160503 Address after: 100000 room 113, No. 0707, Haidian District, Beijing, Zhichun Road Patentee after: Super joint energy technology (Beijing) Co., Ltd. Address before: 100176 Beijing City, Daxing District economic and Technological Development Zone Branch 13 Street No. 18 Building No. 26 hospital room 311 Patentee before: Magnificent (Beijing) the energy-conservation Science and Technology Ltd. of middle energy generation |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20161122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |