CN219958343U - Leakage alarm circuit of household gas alarm - Google Patents
Leakage alarm circuit of household gas alarm Download PDFInfo
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- CN219958343U CN219958343U CN202321278633.XU CN202321278633U CN219958343U CN 219958343 U CN219958343 U CN 219958343U CN 202321278633 U CN202321278633 U CN 202321278633U CN 219958343 U CN219958343 U CN 219958343U
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- 230000005670 electromagnetic radiation Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 115
- 238000010586 diagram Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- RAOIDOHSFRTOEL-UHFFFAOYSA-N tetrahydrothiophene Chemical compound C1CCSC1 RAOIDOHSFRTOEL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a leakage alarm circuit of a household gas alarm, which comprises a first passive normally open sub-circuit, a second passive normally open sub-circuit, a first path of output terminal, a second path of output terminal and a three-pin plug, wherein the first passive normally open sub-circuit is connected with the three-pin plug through the first path of output terminal so as to send a normally closed signal when the working state of the household gas alarm is normal, and the second path of output terminal is connected with the three-pin plug through the second path of output terminal so as to send a passive normally closed signal when the working state of the household gas alarm is alarmed. The state of the household gas alarm is transmitted to the gas meter through the two paths of passive normally open sub-circuit output signals, so that the gas meter can effectively obtain the current state of the household gas alarm, and the interference of electromagnetic radiation can be reduced while the complexity and cost of software are reduced.
Description
Technical Field
The utility model relates to the technical field of gas safety, in particular to a leakage alarm circuit of a household gas alarm.
Background
The gas safety is related to thousands of households and is closely related to the life and property safety of people. But the accidents caused by irregular gas consumption or ageing and leakage of pipelines are also endlessly layered at present, and even have hidden rising trend. The kitchen household gas has the pungent smell although the tetrahydrothiophene odorizing agent is added, once the gas leaks and gathers, the user finds out that the secondary disaster of the gas is easy to be caused.
When the combustible gas in the industrial environment and the daily living environment (such as a kitchen using natural gas) leaks, the household gas alarm can send out an audible and visual alarm signal when detecting that the concentration of the combustible gas reaches the alarm value set by the alarm, and simultaneously control the electromagnetic valve connected with the audible and visual alarm to be closed, and the electromagnetic valve is closed to cut off the gas pipeline after being closed, so that the occurrence of malignant events such as explosion caused by continuous leakage of the gas is effectively avoided, and safety measures such as personnel evacuation, forced air exhaust, equipment shutdown and the like are reminded to take.
In the prior art, when the gas alarm detects gas leakage alarm, a driving signal is output to the gas meter, so that a valve in the gas meter is closed. Because the traditional gas alarm only simply outputs a driving signal to the internal valve of the gas meter, the internal valve is closed. The gas meter itself cannot obtain the current state of the gas alarm. If the state of the household gas alarm needs to be known, a communication interface needs to be added between the two. This not only increases the complexity and cost of the software, but also the communication is susceptible to interference from various electromagnetic radiations.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a leakage alarm circuit of a household gas alarm, which is used for conveying the state of the household gas alarm to a gas meter through two paths of relay passive output signals.
The aim of the utility model is achieved by the following technical scheme:
in a first aspect, the utility model provides a leakage alarm circuit of a household gas alarm, which comprises a first passive normally open sub-circuit, a second passive normally open sub-circuit, a first path of output terminal, a second path of output terminal and a three-pin plug, wherein the first passive normally open sub-circuit is connected with the three-pin plug through the first path of output terminal so as to send a normally closed signal when the working state of the household gas alarm is normal, and the second path of output terminal is connected with the three-pin plug through the second path of output terminal so as to send a passive normally closed signal when the working state of the household gas alarm is alarm;
the first passive normally open sub-circuit comprises a first diode, a first relay, a first switch, a first triode, a first resistor and a second resistor, wherein an OUT1 end is connected with one end of the second resistor through a base electrode of the first resistor and the first triode, an emitting electrode of the first triode is connected with the other end of the second resistor and grounded, a collecting electrode of the first triode is respectively connected with an anode of the first diode and one end of the first relay, a cathode of the first diode is connected with the other end of the first relay, and the first relay controls the first switch to send a normally closed signal to the three-pin plug through the first output terminal when being closed to a first position;
the second passive normally open sub-circuit comprises a second diode, a second relay, a second switch, a second triode, a third resistor and a fourth resistor, an OUT2 end is connected with the base electrode of the second triode and one end of the fourth resistor through the third resistor, an emitting electrode of the second triode is connected with the other end of the fourth resistor and grounded, a collecting electrode of the second triode is respectively connected with an anode of the second diode and one end of the second relay, a cathode of the second diode is connected with the other end of the second relay, and the second relay controls the second switch to send passive normally closed signals to the three-pin plug through a second output terminal when being closed to a second position.
In one possible implementation manner, the first wire output by the first path of output terminal is connected with one pin of the three-pin plug, and the second wire is connected with two pins of the three-pin plug;
and a third wire output by the second path of output terminal is connected with the third pin of the three-pin plug, and a fourth wire is connected with one pin of the three-pin plug.
In one possible implementation manner, the first line output by the first path of output terminal is shorted with the fourth line output by the second path of output terminal.
In one possible implementation, the first relay controls the first switch to close to a first position to output a normally open signal, and the second relay controls the second switch to close to the first position to output a passive normally open signal when the household gas alarm is powered down or fails.
In one possible implementation, when the home gas alarm is in a normal working state, the second relay controls the second switch to be closed to the first position to output a passive normally open signal.
In one possible implementation, the first relay controls the first switch to be closed to the second position to output a passive normally open signal when the household gas alarm is in an operating state for alarming.
In a second aspect, the utility model provides a leakage alarm device for a household gas alarm, which is characterized by comprising a household gas alarm and a gas meter connected with the household gas alarm, wherein the household gas alarm comprises a leakage alarm circuit for the household gas alarm.
The above-mentioned main scheme of the utility model and its various further alternatives can be freely combined to form multiple schemes, which are all the schemes that the utility model can adopt and claim; and the utility model can be freely combined between the (non-conflicting choices) choices and between the choices and other choices. Various combinations will be apparent to those skilled in the art from a review of the present disclosure, and are not intended to be exhaustive or all of the present disclosure.
The utility model discloses a leakage alarm circuit of a household gas alarm, which comprises a first passive normally open sub-circuit, a second passive normally open sub-circuit, a first path of output terminal, a second path of output terminal and a three-pin plug, wherein the first passive normally open sub-circuit is connected with the three-pin plug through the first path of output terminal so as to send a normally closed signal when the working state of the household gas alarm is normal, and the second path of output terminal is connected with the three-pin plug through the second path of output terminal so as to send a passive normally closed signal when the working state of the household gas alarm is alarmed. The state of the household gas alarm is transmitted to the gas meter through the two paths of passive normally open sub-circuit output signals, so that the gas meter can effectively obtain the current state of the household gas alarm, and the interference of electromagnetic radiation can be reduced while the complexity and cost of software are reduced.
Drawings
Fig. 1 shows a schematic diagram of a leakage alarm circuit of a household gas alarm according to an embodiment of the utility model.
Fig. 2 shows a block diagram of the connection of a household gas alarm leak alarm device.
Icon: a first output terminal F1; a second path output terminal F2; a three-pin plug S1; a first switch K1; a second switch K2; a first relay J1; a second relay J2; a first diode D1; a second diode D2; a first triode Q1; a second triode Q2; a first resistor R1; a second resistor R2; a third resistor R3; and a fourth resistor R4.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the prior art, when the gas alarm detects gas leakage alarm, a driving signal is output to the gas meter, so that a valve in the gas meter is closed. Because the traditional gas alarm only simply outputs a driving signal to the internal valve of the gas meter, the internal valve is closed. The gas meter itself cannot obtain the current state of the gas alarm. If the state of the household gas alarm needs to be known, a communication interface needs to be added between the two. This not only increases the complexity and cost of the software, but also the communication is susceptible to interference from various electromagnetic radiations.
Therefore, in order to solve the above-mentioned problems, the present utility model proposes a leakage alarm circuit for a household gas alarm, which is located in the household gas alarm and connected to a gas meter to realize interconnection between the household gas alarm and the gas meter, and the state of the household gas alarm is transmitted to the gas meter through two passive normally open sub-circuit output signals, so that the gas meter can effectively obtain the current state of the household gas alarm, and the interference of electromagnetic radiation can be reduced while the complexity and cost of software are reduced, and the details will be described below.
Referring to fig. 1, fig. 1 shows a leakage alarm circuit of a household gas alarm provided by the embodiment of the utility model, where the circuit includes a first passive normally open sub-circuit, a second passive normally open sub-circuit, a first path of output terminal F1, a second path of output terminal F2 and a three-pin plug S1, the first passive normally open sub-circuit is connected with the three-pin plug S1 through the first path of output terminal F1 so as to send a normally closed signal when the household gas alarm is in a normal working state, and the second path of output terminal F2 is connected with the three-pin plug S1 through the second path of output terminal F2 so as to send a passive normally closed signal when the household gas alarm is in a working state.
The first passive normally open sub-circuit comprises a first diode D1, a first relay J1, a first switch K1, a first triode Q1, a first resistor R1 and a second resistor R2, wherein the OUT1 end is connected with the base electrode of the first triode Q1 and one end of the second resistor R2 through the first resistor R1, the emitter electrode of the first triode Q1 is connected with the other end of the second resistor R2 and grounded, the collector electrode of the first triode Q1 is respectively connected with the anode of the first diode D1 and one end of the first relay J1, the cathode of the first diode D1 is connected with the other end of the first relay J1, and the first relay J1 controls the first switch K1 to be closed to a first position, and sends a normally closed signal to the three-pin plug S1 through a first output terminal F1.
The second passive normally open sub-circuit comprises a second diode D2, a second relay J2, a second switch K2, a second triode Q2, a third resistor R3 and a fourth resistor R4, wherein the OUT2 end is connected with the base electrode of the second triode Q2 and one end of the fourth resistor R4 through the third resistor R3, the emitter electrode of the second triode Q2 is connected with the other end of the fourth resistor R4 and grounded, the collector electrode of the second triode Q2 is respectively connected with the anode of the second diode D2 and one end of the second relay J2, the cathode of the second diode D2 is connected with the other end of the second relay J2, and the second relay J2 controls the second switch K2 to be closed to a second position and sends a passive normally closed signal to the three-pin plug S1 through a second output terminal F2.
When the household gas alarm is powered down or fails, the first relay J1 controls the first switch K1 to be closed to a first position to output a normally open signal, and the second relay J2 controls the second switch K2 to be closed to the first position to output a passive normally open signal.
When the working state of the household gas alarm is normal, the second relay J2 controls the second switch K2 to be closed to the first position, and a passive normally open signal is output.
When the working state of the household gas alarm alarms, the first relay J1 controls the first switch K1 to be closed to the second position, and a passive normally open signal is output.
The household gas alarm mainly comprises three states: normal, alarm, and power down or failure, and the home gas alarms need to feed back these three different conditions to the gas meter, and different signals must be sent. When the household gas alarm is normally electrified and works normally, the first relay J1 controls the first switch K1 to be closed to a first position, a normally closed signal is sent to the three-pin plug S1 through the first output terminal F1, the second relay J2 controls the second switch K2 to be closed to the first position and outputs a passive normally open signal, and the gas alarm is normally electrified and works normally for the gas meter.
When the household gas alarm is powered down or fails, at the moment, the household gas alarm can control the first switch K1 to be closed to a first position through the first relay J1 to output a normally open signal, and the second relay J2 controls the second switch K2 to be closed to the first position to output a passive normally open signal due to power failure or detection of abnormality of the household gas alarm, so that the abnormal state of the household gas alarm when the household gas alarm is powered down or fails is transmitted to the gas meter.
When the household gas alarm detects that gas leakage exceeds concentration alarm, the household gas alarm can control the first switch K1 to be closed to the second position through the first relay J1 to output a passive normally open signal, the second relay J2 controls the second switch K2 to be closed to the second position and sends the passive normally closed signal, and the alarm state of the household gas alarm is transmitted to the gas meter through the second path output terminal F2 to be sent to the three-pin plug S1.
The first line output by the first path output terminal F1 is connected with one pin of the three-pin plug S1, and the second line is connected with two pins of the three-pin plug S1;
the third wire output by the second path output terminal F2 is connected with the third pin of the three-pin plug S1, and the fourth wire is connected with one pin of the three-pin plug S1.
The first line output by the first path of output terminal F1 is short-circuited with the fourth line output by the second path of output terminal F2.
The output line of the first output terminal F1 is a first line and a second line, the output line of the second output terminal F2 is a third line and a fourth line, and the connection mode with the three-pin plug S1 is as follows: the first wire is connected with one pin of the three-pin plug S1, the second wire is connected with two pins of the three-pin plug S1, the third wire is connected with three pins of the three-pin plug S1, the fourth wire is connected with one pin of the three-pin plug S1, and the fourth wire is output by the first wire and the second output terminal F2.
In addition, the utility model provides leakage alarm equipment of the household gas alarm, which comprises the household gas alarm and a gas meter connected with the household gas alarm, wherein the household gas alarm comprises a leakage alarm circuit of the household gas alarm. Referring to fig. 2, fig. 2 shows a connection block diagram of a household gas alarm leakage alarm device. The household gas alarm is connected with a power supply, starts working by using alternating current and is connected with a gas meter. The electromagnetic valve is arranged in the gas meter, the gas meter determines the closing of the gas pipeline by controlling the closing of the electromagnetic valve, and the gas valve resends the gas to the gas cooker or the water heater for users to use.
Compared with the prior art, the embodiment of the utility model has the following beneficial effects:
first, through increasing two way relay output signals, with domestic gas alarm's operating condition conveying for the gas table, the signal of conveying is passive switching value signal, reduces the interference of outside electromagnetism.
And secondly, the plagiarism can be prevented through the arranged output line and the three-pin plug, the interconnection between the household gas alarm and the gas meter is simplified, the communication and the communication protocol between the household gas alarm and the gas meter are not required to be increased, and the complexity of a circuit is reduced.
In summary, the leakage alarm circuit of the household gas alarm disclosed by the utility model comprises a first passive normally open sub-circuit, a second passive normally open sub-circuit, a first path of output terminal, a second path of output terminal and a three-pin plug, wherein the first passive normally open sub-circuit is connected with the three-pin plug through the first path of output terminal so as to send a normally closed signal when the working state of the household gas alarm is normal, and the second path of output terminal is connected with the three-pin plug through the second path of output terminal so as to send a passive normally closed signal when the working state of the household gas alarm is alarmed. The state of the household gas alarm is transmitted to the gas meter through the two paths of passive normally open sub-circuit output signals, so that the gas meter can effectively obtain the current state of the household gas alarm, the software complexity and the cost are reduced, and the interference of electromagnetic radiation is reduced at the same time
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. The leakage alarm circuit of the household gas alarm is characterized by comprising a first passive normally open sub-circuit, a second passive normally open sub-circuit, a first path of output terminal, a second path of output terminal and a three-pin plug, wherein the first passive normally open sub-circuit is connected with the three-pin plug through the first path of output terminal so as to send a normally closed signal when the working state of the household gas alarm is normal, and the second path of output terminal is connected with the three-pin plug through the second path of output terminal so as to send a passive normally closed signal when the working state of the household gas alarm is alarm;
the first passive normally open sub-circuit comprises a first diode, a first relay, a first switch, a first triode, a first resistor and a second resistor, wherein an OUT1 end is connected with one end of the second resistor through a base electrode of the first resistor and the first triode, an emitting electrode of the first triode is connected with the other end of the second resistor and grounded, a collecting electrode of the first triode is respectively connected with an anode of the first diode and one end of the first relay, a cathode of the first diode is connected with the other end of the first relay, and the first relay controls the first switch to send a normally closed signal to the three-pin plug through the first output terminal when being closed to a first position;
the second passive normally open sub-circuit comprises a second diode, a second relay, a second switch, a second triode, a third resistor and a fourth resistor, an OUT2 end is connected with the base electrode of the second triode and one end of the fourth resistor through the third resistor, an emitting electrode of the second triode is connected with the other end of the fourth resistor and grounded, a collecting electrode of the second triode is respectively connected with an anode of the second diode and one end of the second relay, a cathode of the second diode is connected with the other end of the second relay, and the second relay controls the second switch to send passive normally closed signals to the three-pin plug through a second output terminal when being closed to a second position.
2. The leakage alarm circuit of a household gas alarm as claimed in claim 1, wherein a first wire output from said first output terminal is connected to a pin of said three-pin plug, and a second wire is connected to a second pin of said three-pin plug;
and a third wire output by the second path of output terminal is connected with the third pin of the three-pin plug, and a fourth wire is connected with one pin of the three-pin plug.
3. The leakage alarm circuit of a household gas alarm as claimed in claim 2, wherein the first line outputted from the first output terminal is short-circuited with the fourth line outputted from the second output terminal.
4. The household gas alarm leakage warning circuit as recited in claim 1, wherein said first relay controls said first switch to close to a first position and outputs a normally open signal, and said second relay controls said second switch to close to a first position and outputs a passive normally open signal when the household gas alarm is powered down or fails.
5. The leakage alarm circuit of claim 1, wherein the second relay controls the second switch to be closed to the first position and outputs a passive normally open signal when the home gas alarm is in a normal operation.
6. The leakage alarm circuit of claim 1, wherein the first relay controls the first switch to close to a second position and outputs a passive normally open signal when the household gas alarm is in an operational state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321278633.XU CN219958343U (en) | 2023-05-24 | 2023-05-24 | Leakage alarm circuit of household gas alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321278633.XU CN219958343U (en) | 2023-05-24 | 2023-05-24 | Leakage alarm circuit of household gas alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219958343U true CN219958343U (en) | 2023-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321278633.XU Active CN219958343U (en) | 2023-05-24 | 2023-05-24 | Leakage alarm circuit of household gas alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219958343U (en) |
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2023
- 2023-05-24 CN CN202321278633.XU patent/CN219958343U/en active Active
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