CN203626497U - Natural gas leakage ventilation control device - Google Patents
Natural gas leakage ventilation control device Download PDFInfo
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- CN203626497U CN203626497U CN201320888902.4U CN201320888902U CN203626497U CN 203626497 U CN203626497 U CN 203626497U CN 201320888902 U CN201320888902 U CN 201320888902U CN 203626497 U CN203626497 U CN 203626497U
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Abstract
The utility model discloses a natural gas leakage ventilation control device, relating to the field of fuel gas safety and aiming to solve the problem that ventilation cannot be performed in time in case of household natural gas leakage. The natural gas leakage ventilation control device comprises an exhaust window which is an inwardly-opened side-hung window. The device further comprises a gas acquisition circuit, a comparison circuit, an amplifying circuit, a direct current motor driver, a direct current motor and an executing mechanism, and the executing mechanism comprises a fixing component, a telescopic mechanism and a shaft coupling. In case of natural gas leakage, the gas acquisition circuit is used for acquiring a natural gas signal and outputting voltage to the comparison circuit, the comparison circuit outputs high level when the output voltage is greater than set voltage, power is supplied to the direct current motor driver after the high level is amplified by the amplifying circuit, the direct current motor driver is used for driving the direct current motor to work, and the direct current motor is used for driving the executing mechanism to open the exhaust window, thus leaked natural gas is exhausted into the outdoor air in time. The natural gas leakage ventilation control device is applied to ventilation in case of natural gas leakage.
Description
Technical field
The utility model relates to gas safe field.
Background technology
Current most family is used natural gas as domestic gas.Natural gas leaking is one of danger larger on family life impact.In family, the natural gas reports to the police machine is all installed at present, so that at natural gas leaking alarm, so that user processes in time, is avoided blasting.But above-mentioned situation is only applicable to family people's situation.In family no one's situation, even if triggered alarm after natural gas leaking, user can not find in time, and wait for other people hidden danger of finding to eliminate danger in time, if can ventilate in time after natural gas leaking, the natural gas of leakage is discharged, will greatly reduce the possibility of blast.Therefore, invent a kind of ventilation installation, can the ventilation of windowing in time after natural gas leaking have been detected.
Utility model content
The utility model is the problem that cannot ventilate in time when solving family's natural gas leaking.A kind of natural gas leaking ventilation controller is now provided.
Natural gas leaking ventilation controller, this device comprises exhausting window, and exhausting window adopts inner-opening type casement window, and this device also comprises gas collecting circuit, comparison circuit, amplifying circuit, DC motor driver, direct current generator and executing agency;
Executing agency comprises fixed part, telescoping mechanism and shaft coupling;
The output of gas collecting circuit connects the input of comparison circuit, the output of comparison circuit connects the input of amplifying circuit, the output of amplifying circuit connects the input of DC motor driver, the control end of DC motor driver connects the input of direct current generator, the output shaft of direct current generator connects the driving shaft of telescoping mechanism by connecting shaft coupling, the other end of telescoping mechanism is hinged by the movable end of fixed part and exhausting window.
Described gas collecting circuit adopts MQ-7 type gas sensor to realize.
Described comparison circuit adopts LM311 integrated circuit to realize, the inverting input of LM311 connects the output of gas collecting circuit, the normal phase input end of LM311 connects reference voltage U0, the output of LM311 connects one end of the first resistance R 1, and the other end of the first resistance R 1 is the output of circuit as a comparison.
Described amplifying circuit comprises triode, the first electric capacity, the second electric capacity, the second resistance R 2 and the 3rd resistance R 3, one end of the first electric capacity connects second one end of resistance R 2 and the base stage of triode simultaneously, the emitter stage of described triode connects the power supply ground of DC power supply, and the colelctor electrode of described triode connects one end of the 3rd resistance R 3 and one end of the second electric capacity simultaneously; The other end of the other end of the second resistance R 2 and the 3rd resistance R 3 is connected the anodal VCC of DC power supply simultaneously; The other end of the first electric capacity is as the input of amplifying circuit, and the other end of the second electric capacity is as the output of amplifying circuit.
Described DC motor driver adopts L298 drive circuit.
Described direct current generator adopts DC micro-motor.
Described fixed part is made up of two connectors, and the movable end of one of them connector and exhausting window is hinged, and another connector is connected with the other end of telescoping mechanism, adopts buckle structure to connect between two connectors.
Natural gas leaking ventilation controller described in the utility model, adopt gas collecting circuit, comparison circuit, amplifying circuit, DC motor driver, direct current generator and executing agency, in the time of natural gas leaking, gas collecting circuit gathers cng signal, and then output voltage, setting voltage comparison in described voltage and comparison circuit, in the time that voltage is greater than setting voltage, comparison circuit output high level, this high level through amplifying circuit amplify after for powering to DC motor driver, DC motor driver work, then DC motor driver drives direct current generator work, direct current generator drives executing agency to open exhausting window again, the natural gas of revealing is drained in outdoor air in time, family no one in time, also can ventilate in time.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the natural gas leaking ventilation controller described in the specific embodiment one;
Fig. 2 is the schematic diagram of gas collecting circuit in the utility model;
Fig. 3 is the circuit diagram of comparison circuit in the utility model;
Fig. 4 is the circuit diagram of amplifying circuit in the utility model.
The specific embodiment
The specific embodiment one: illustrate present embodiment referring to figs. 1 through Fig. 4, natural gas leaking ventilation controller described in present embodiment, this device comprises exhausting window, exhausting window adopts inner-opening type casement window, and this device also comprises gas collecting circuit 1, comparison circuit 2, amplifying circuit 3, DC motor driver 4, direct current generator 5 and executing agency 6;
Executing agency 6 comprises fixed part 7, telescoping mechanism 8 and shaft coupling 9;
The output of gas collecting circuit 1 connects the input of comparison circuit 2, the output of comparison circuit 2 connects the input of amplifying circuit 3, the output of amplifying circuit 3 connects the input of DC motor driver 4, the control end of DC motor driver 4 connects the input of direct current generator 5, the output shaft of direct current generator 5 connects the driving shaft of telescoping mechanism 8 by connecting shaft coupling 9, the other end of telescoping mechanism 8 is hinged with the movable end of exhausting window by fixed part 7.
The course of work: in the time that imflammable gas concentration does not exceed standard, the output voltage of sensor is less than setting voltage, thus make the end of oppisite phase output low level of the voltage comparator in comparison circuit, and DC motor driver is not worked.
In the time of imflammable gas concentration over-standard, the output voltage of sensor is larger than setting voltage, thereby make the in-phase end output high level of the voltage comparator in comparison circuit, carry out signal amplification through amplifying circuit, make this voltage can drive DC motor driver, DC motor driver work, thus drive direct current generator, direct current generator drives executing agency's action again, and executing agency opens exhausting window.
The specific embodiment two: present embodiment is that the natural gas leaking ventilation controller described in the specific embodiment one is described further, in present embodiment,
Described gas collecting circuit 1 adopts MQ-7 type gas sensor to realize.
In this design, adopt coal gas, natural gas gas sensor, select resistance sensor in this programme, sensor model number is selected MQ-7.Fig. 2 is the structure chart of MQ-7 type gas sensor, wherein, the test voltage that need to apply when VC is this working sensor, the heating voltage that need to apply when VH is this working sensor, load resistance when RL is this working sensor, VRL is the output voltage of this sensor, and the analog voltage range of MQ-7 type gas sensor output is 0V～5V.
The specific embodiment three: present embodiment is that the natural gas leaking ventilation controller described in the specific embodiment one is described further, in present embodiment,
Described comparison circuit 2 adopts LM311 integrated circuit to realize, the inverting input of LM311 connects the output of gas collecting circuit 1, the normal phase input end of LM311 connects reference voltage U0, the output of LM311 connects one end of the first resistance R 1, and the other end of the first resistance R 1 is the output of circuit 2 as a comparison.
Be the circuit diagram of LM311 as shown in Figure 3, U0 represents setting voltage, and setting voltage value is 3.5V.R1 is the resistance of comparison circuit, the output that U1 is comparison circuit.
The specific embodiment four: present embodiment is that the natural gas leaking ventilation controller described in the specific embodiment one is described further, in present embodiment,
Described amplifying circuit 3 comprises triode, the first capacitor C 1, the second capacitor C 2, the second resistance R 2 and the 3rd resistance R 3, one end of the first capacitor C 1 connects second one end of resistance R 2 and the base stage of triode simultaneously, the emitter stage of described triode connects the power supply ground of DC power supply, and the colelctor electrode of described triode connects one end of the 3rd resistance R 3 and one end of the second capacitor C 2 simultaneously; The other end of the other end of the second resistance R 2 and the 3rd resistance R 3 is connected the anodal VCC of DC power supply simultaneously; The other end of the first capacitor C 1 is as the input of amplifying circuit 3, and the other end of the second capacitor C 2 is as the output of amplifying circuit 3.
Be illustrated in figure 4 the circuit diagram of amplifying circuit 9013.Adopt 9013 multiplication factors between 40～100.
The specific embodiment five: present embodiment is that the natural gas leaking ventilation controller described in the specific embodiment one is described further, in present embodiment,
Described DC motor driver 4 adopts L298 drive circuit.
L298 drive circuit is used for driving direct current generator, and this L298 drive circuit can be realized the rotating of direct current generator, and this part technology is relatively ripe, repeats no more here.
The specific embodiment six: present embodiment is that the natural gas leaking ventilation controller described in the specific embodiment one is described further, in present embodiment, described direct current generator 5 adopts DC micro-motor.
The specific embodiment seven: present embodiment is that the natural gas leaking ventilation controller described in the specific embodiment one is described further, in present embodiment,
Described fixed part 7 is made up of two connectors, and the movable end of one of them connector and exhausting window is hinged, and another connector is connected with the other end of telescoping mechanism 8, adopts buckle structure to connect between two connectors.
The fixed part 7 that present embodiment limits is convenient to dismounting, in application process, under the state of windowing, this fixed part 7 can be taken apart.In the time closing window, this fixed part 7 is connected, Connection Card buckle structure, window is not opened from the outside, can play antitheft effect.
Claims (6)
1. natural gas leaking ventilation controller, this device comprises exhausting window, exhausting window adopts inner-opening type casement window, it is characterized in that, this device also comprises gas collecting circuit (1), comparison circuit (2), amplifying circuit (3), DC motor driver (4), direct current generator (5) and executing agency (6);
Executing agency (6) comprises fixed part (7), telescoping mechanism (8) and shaft coupling (9);
The output of gas collecting circuit (1) connects the input of comparison circuit (2), the output of comparison circuit (2) connects the input of amplifying circuit (3), the output of amplifying circuit (3) connects the input of DC motor driver (4), the control end of DC motor driver (4) connects the input of direct current generator (5), the output shaft of direct current generator (5) connects the driving shaft of telescoping mechanism (8) by connecting shaft coupling (9), the other end of telescoping mechanism (8) is hinged with the movable end of exhausting window by fixed part (7).
2. natural gas leaking ventilation controller according to claim 1, is characterized in that, described gas collecting circuit (1) adopts MQ-7 type gas sensor to realize.
3. natural gas leaking ventilation controller according to claim 1, it is characterized in that, described comparison circuit (2) adopts LM311 integrated circuit to realize, the inverting input of LM311 connects the output of gas collecting circuit (1), the normal phase input end of LM311 connects reference voltage U0, the output of LM311 connects one end of the first resistance R 1, and the other end of the first resistance R 1 is the output of circuit (2) as a comparison.
4. natural gas leaking ventilation controller according to claim 1, it is characterized in that, described amplifying circuit (3) comprises triode, the first electric capacity (C1), the second electric capacity (C2), the second resistance R 2 and the 3rd resistance R 3, one end of the first electric capacity (C1) connects second one end of resistance R 2 and the base stage of triode simultaneously, the emitter stage of described triode connects the power supply ground of DC power supply, and the colelctor electrode of described triode connects one end of the 3rd resistance R 3 and one end of the second electric capacity (C2) simultaneously; The other end of the other end of the second resistance R 2 and the 3rd resistance R 3 is connected the anodal VCC of DC power supply simultaneously; The other end of the first electric capacity (C1) is as the input of amplifying circuit (3), and the other end of the second electric capacity (C2) is as the output of amplifying circuit (3).
5. natural gas leaking ventilation controller according to claim 1, is characterized in that, described DC motor driver (4) adopts L298 drive circuit.
6. natural gas leaking ventilation controller according to claim 1, it is characterized in that, described fixed part (7) is made up of two connectors, the movable end of one of them connector and exhausting window is hinged, another connector is connected with the other end of telescoping mechanism (8), adopts buckle structure to connect between two connectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888902.4U CN203626497U (en) | 2013-12-31 | 2013-12-31 | Natural gas leakage ventilation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320888902.4U CN203626497U (en) | 2013-12-31 | 2013-12-31 | Natural gas leakage ventilation control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203626497U true CN203626497U (en) | 2014-06-04 |
Family
ID=50812987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320888902.4U Expired - Fee Related CN203626497U (en) | 2013-12-31 | 2013-12-31 | Natural gas leakage ventilation control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203626497U (en) |
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2013
- 2013-12-31 CN CN201320888902.4U patent/CN203626497U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20211231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |