CN207008838U - A kind of gas leakage detecting device - Google Patents
A kind of gas leakage detecting device Download PDFInfo
- Publication number
- CN207008838U CN207008838U CN201720911131.4U CN201720911131U CN207008838U CN 207008838 U CN207008838 U CN 207008838U CN 201720911131 U CN201720911131 U CN 201720911131U CN 207008838 U CN207008838 U CN 207008838U
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- CN
- China
- Prior art keywords
- amplifier
- gas sensor
- electric capacity
- gas
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of gas leakage detecting device, it is made up of first resistor to the 4th resistance, the first electric capacity, the second electric capacity, the first amplifier, the second amplifier, gas sensor, potentiometer, triode, loudspeaker and battery, work as Combustible Gas Leak, when the combustable gas concentration of interior is exceeded limit value, when gas sensor output voltage is higher than the conversion voltage of the first amplifier, the multivibrator work of first amplifier and the second amplifier composition, from the second amplifier outputting oscillation signal.The signal promotes loudspeaker to send alarm after triode amplifies.The resistance value of potentiometer is adjusted, for adjusting the detection sensitivity of gas sensor.Compared with prior art, the utility model is using dual amplifier composition multivibrator, the effective signal for amplifying gas sensor, meanwhile gas sensor can adjust detection sensitivity, the detection sensitivity of gas leakage is improved, so as to improve safety coefficient, there is the value of popularization and application.
Description
Technical field
It the utility model is related to a kind of safety device, more particularly to a kind of gas leakage detecting device.
Background technology
Combustion gas is the general name of gaseous fuel, and it can burn and release heat, is used for city dweller and industrial enterprise.Combustion gas
Species it is a lot, mainly have natural gas, manufactured gas, manufactured fuel gas, liquefied petroleum gas and biogas, coal gas.In the prior art, indoor fuel gas
Leakage is not easy to be noticeable, and causes potential safety hazard, and Fuel Gas Leak Alarm species of the prior art is various, and function respectively has quality,
In order to improve safety coefficient, it is necessary to constantly improve and innovate.
Utility model content
The purpose of this utility model is that to solve the above problems and provides a kind of gas leakage detecting device.
The utility model is achieved through the following technical solutions above-mentioned purpose：
The utility model is by first resistor to the 4th resistance, the first electric capacity, the second electric capacity, the first amplifier, the second amplification
Device, gas sensor, potentiometer, triode, loudspeaker and battery composition, the positive pole of battery simultaneously the colelctor electrode with triode,
The cathode power supply end of second amplifier, the negative pole of voltage-stabiliser tube, the first end of the first electric capacity, the first end of potentiometer, potentiometer
Sliding end connects with the first end of gas sensor, the negative pole of battery simultaneously the first end with loudspeaker, gas sensor it is negative
Pole power end, the second end of the first electric capacity, the positive pole of voltage-stabiliser tube connect with the first end of first resistor, the second end of first resistor
It is connected with the first end of heater strip in gas sensor, the second end of heater strip and the second end of potentiometer connect in gas sensor
Connect, the second end of gas sensor links with the positive signal end of the first amplifier, the negative signal end of the first amplifier and the
The first end connection of two resistance, the second end of second resistance connect with the first end of 3rd resistor and the first end of the second electric capacity simultaneously
Connect, the output end of the first amplifier is connected with the negative signal end of the second amplifier, the positive signal end of the second amplifier and the
The second end connection of three resistance, the output end of the second amplifier simultaneously with the second end of the second electric capacity and the first end of the 4th resistance
Connection, the second end of the 4th resistance and the base stage of triode connect, and the emitter stage of triode and the second end of loudspeaker connect.
The beneficial effects of the utility model are：
The utility model is a kind of gas leakage detecting device, and compared with prior art, the utility model is using double amplifications
Device forms multivibrator, effectively amplifies the signal of gas sensor, meanwhile, it is sensitive that gas sensor can adjust detection
Degree, the detection sensitivity of gas leakage is improved, so as to improve safety coefficient, there is the value of popularization and application.
Brief description of the drawings
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1：The utility model is by first resistor R1 to the 4th resistance R4, the first electric capacity C1, the second electric capacity C2,
One amplifier IC1, the second amplifier IC2, gas sensor Q, potentiometer RP, triode VT, loudspeaker Y and battery E compositions, electricity
Pond E positive pole simultaneously with triode VT colelctor electrode, the second amplifier IC2 cathode power supply end, voltage-stabiliser tube DW negative pole, first
Electric capacity C1 first end, potentiometer RP first end, potentiometer RP sliding end connect with gas sensor Q first end, electricity
Pond E the negative pole first end with loudspeaker Y, gas sensor Q negative electricity source, the first electric capacity C1 the second end, steady simultaneously
Pressure pipe DW positive pole connects with first resistor R1 first end, first resistor R1 the second end and heater strip in gas sensor Q
First end connection, the second end of heater strip is connected with potentiometer RP the second end in gas sensor Q, gas sensor Q's
Second end and the first amplifier IC1 positive signal end link, and the first amplifier IC1 negative signal end is with second resistance R2's
First end connects, and second resistance R2 the second end connects with 3rd resistor R3 first end and the second electric capacity C2 first end simultaneously
Connect, the first amplifier IC1 output end is connected with the second amplifier IC2 negative signal end, the second amplifier IC2 positive pole letter
Number end is connected with 3rd resistor R3 the second end, the second amplifier IC2 output end simultaneously with the second electric capacity C2 the second end and
4th resistance R4 first end connection, the 4th resistance R4 the second end are connected with triode VT base stage, triode VT transmitting
Pole is connected with loudspeaker Y the second end.
Operation principle of the present utility model is as follows：
When interior (is less than limit value) without imflammable gas or combustable gas concentration in allowed band, gas sensor
Resistance is larger between both ends, and the first amplifier IC1 output end output voltage is relatively low, and multivibrator does not work, in loudspeaker Y
Voiceless sound.When imflammable gas (coal gas or natural gas) leaks, and the combustable gas concentration of interior is exceeded limit value, gas passes
Sensor Q output voltages be higher than the first amplifier IC1 conversion voltage when, the first amplifier IC1 and the second amplifier IC2 composition
Multivibrator works, from the second amplifier IC2 outputting oscillation signals.The signal promotes loudspeaker Y after triode VT amplifications
Send alarm.Potentiometer RP resistance value is adjusted, for adjusting gas sensor Q detection sensitivity.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (1)
- A kind of 1. gas leakage detecting device, it is characterised in that：By first resistor to the 4th resistance, the first electric capacity, the second electric capacity, First amplifier, the second amplifier, gas sensor, potentiometer, triode, loudspeaker and battery composition, the positive pole of battery are same When and the colelctor electrode of triode, the cathode power supply end of the second amplifier, the negative pole of voltage-stabiliser tube, the first end of the first electric capacity, current potential The first end of device, the sliding end of potentiometer connect with the first end of gas sensor, the negative pole of battery simultaneously with loudspeaker the One end, the negative electricity source of gas sensor, the second end of the first electric capacity, the first end of the positive pole of voltage-stabiliser tube and first resistor connect Connect, the second end of first resistor is connected with the first end of heater strip in gas sensor, the second of heater strip in gas sensor End is connected with the second end of potentiometer, and the second end of gas sensor links with the positive signal end of the first amplifier, and first puts The negative signal end of big device and the first end of second resistance connect, the second end of second resistance while the first end with 3rd resistor Connected with the first end of the second electric capacity, the output end of the first amplifier is connected with the negative signal end of the second amplifier, and second puts The positive signal end of big device and the second end of 3rd resistor connect, the output end of the second amplifier while second with the second electric capacity End connect with the first end of the 4th resistance, the base stage connection of the second end of the 4th resistance and triode, the emitter stage of triode and The second end connection of loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720911131.4U CN207008838U (en) | 2017-07-26 | 2017-07-26 | A kind of gas leakage detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720911131.4U CN207008838U (en) | 2017-07-26 | 2017-07-26 | A kind of gas leakage detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207008838U true CN207008838U (en) | 2018-02-13 |
Family
ID=61457406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720911131.4U Expired - Fee Related CN207008838U (en) | 2017-07-26 | 2017-07-26 | A kind of gas leakage detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207008838U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107274638A (en) * | 2017-07-26 | 2017-10-20 | 广东工业大学 | A kind of gas leakage detecting device |
-
2017
- 2017-07-26 CN CN201720911131.4U patent/CN207008838U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107274638A (en) * | 2017-07-26 | 2017-10-20 | 广东工业大学 | A kind of gas leakage detecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180213 Termination date: 20180726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |