CN2374927Y - Novel combustible gas leakage alarm - Google Patents
Novel combustible gas leakage alarm Download PDFInfo
- Publication number
- CN2374927Y CN2374927Y CN 98233210 CN98233210U CN2374927Y CN 2374927 Y CN2374927 Y CN 2374927Y CN 98233210 CN98233210 CN 98233210 CN 98233210 U CN98233210 U CN 98233210U CN 2374927 Y CN2374927 Y CN 2374927Y
- Authority
- CN
- China
- Prior art keywords
- gas sensor
- sensor
- gas
- combustible gas
- control module
- 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
Links
- 230000035945 sensitivity Effects 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000012806 monitoring device Methods 0.000 claims description 6
- 230000035939 shock Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000001755 vocal effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 58
- 239000000428 dust Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 208000005374 Poisoning Diseases 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Emergency Alarm Devices (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a monitoring combustible gas leaks and monitors whether its sensor normally works and the good and bad electronic alarm of performance simultaneously, comprises gas sensor, the control unit, vocal ware, luminescent device, power, casing. When the combustible gas leaks or the sensitivity of the gas sensor exceeds the standard and the sensor fails, different acousto-optic alarm signals can be sent out. The gas sensor is inserted in its tube seat and placed outside the machine shell, so that it is convenient for replacement.
Description
The utility model is that a kind of inflammable gas of monitoring leaks and monitor simultaneously the whether electronic alarm of operate as normal and performance quality of its sensor, when combustible gas take place to leak or gas sensor sensitivity exceeds standard, during sensor failure, can send different sound and light alarm signals.Form by gas sensor, control module, acoustical generator, luminescent device, power supply, casing.
Development along with society, the range of application of inflammable gas such as rock gas, liquefied petroleum gas (LPG) more and more widely, they not have the singularity of pollution because it acts as a fuel except being widely used in family, factories and miness, with instead of gasoline, diesel oil and as the power fuel of motor vehicles.
Yet owing to do not take inflammable gas leakage alarm (control) or warning reasons such as (control) malfunctioning, the generation that causes a large amount of personnel's poisonings and pernicious explosive incident because of the inflammable gas leakage is all arranged in the world every year, especially along with the inflammable gas being the appearance of motor vehicles of power and the inexorable trend that finally will extensively carry out thereof, the probability that above-mentioned malignant event takes place has increased greatly.So it is imperative to design a kind of safe and reliable inflammable gas leakage alarm.
Gas sensor is the core parts of this electronic alarm, but because of gas sensor usually is in long-term uninterrupted energising duty, in its life-span very short (being about some months to a year for its life-span of burning type gas sensor), the surface of gas sensor is subject to the absorption of foreign matters such as dust and its sensitivity is reduced greatly even can't operate as normal in addition.As seen, guarantee that gas sensor is in prerequisite and the key that normal operating conditions is whole combustible gas leakage alarm operate as normal all the time.
Conventional leaking gases alarm, as " Chinese patent ": gas leak detector (there is following defective in notification number=CN-2061716V):
1. do not have the transducer sensitivity automated watch-keeping facility, when dust and other impurities is adsorbed on sensor surface, its sensitivity will reduce greatly, even can't operate as normal, cause alarm malfunctioning.
2. gas sensor is fixed on casing inside by welding manner, and when gas sensor lost efficacy, the user is emat sensor more, causes complete machine to scrap.
3. press switch by series resistor on the gas sensor filament and hand and realize " self-checking function ", real-time is poor, simultaneously because of institute's crosstalk resistance is in "on" position for a long time, its resistance fluctuation is bigger, causes the electric current shakiness that flows through filament to make the transducer sensitivity instability and the lost of life.
4. do not have links such as anti-noise cancellation circuit and protecting against shock circuit, make its usable range only be confined to some static relatively places such as family, factories and miness, being difficult to be applied in the combustible gas is on the motor vehicles of power.
The purpose of this utility model: adopt Closed loop Control that gas sensor is monitored in real time, in case gas sensor occurs unusual, just capable of automatic alarm, adopt the version of gas sensor and control module split simultaneously, be convenient to the replacing of failure sensor.It is a kind of safe, reliable, broad-spectrum Fuel Gas Leak Alarm
The utility model is except that having the function of traditional alert device to the combustible gas leakage alarm, its novelty at first is to have set up in the control module gas sensor sensitivity monitoring device, this monitoring device, form by photoelectrical coupler and peripheral circuit thereof, it is monitoring the sensitivity situation of gas sensor constantly, when foreign matters such as dust are adsorbed on sensor surface, can in time send the sound and light alarm signal when causing sensitivity to exceed standard, owing to being plugged on its base and through connecting lead, this gas sensor places outside the casing simultaneously, the user receives transducer sensitivity and exceeds standard after the alerting signal, with gas sensor old under the hand-lifting, after plugging backup sensors, complete machine just is in normal monitor state again.
The utility model has also been set up gas sensor apparatus for monitoring working state and anti-noise cancellation circuit and protecting against shock circuit in control module.The gas sensor working state detection device is made up of two diodes and the peripheral circuit thereof that are serially connected on the gas sensor filament, is monitoring the duty of sensor automatically.Because the forward drop of two diodes remains on about 1.4 volts, can guarantee that the filament current of sensor is stable, thereby reduce the fluctuation of its sensitivity and prolonged its life-span.Owing to increased noise control and protecting against shock circuit, reduced external electromagnetic interference greatly, and this utility model be can be applicable to the combustible gas is on the motor vehicles of power.
Accompanying drawing is for implementing a kind of schematic circuit of the present utility model.
Below with reference to accompanying drawing invention is described in further detail:
In the accompanying drawings, gas sensor sensitivity monitoring device is by photoelectrical coupler E1 (transmitter), E2 (receiver), transistor V4, diode V9, resistance R 8, R9, R10, R11, compositions such as light emitting diode H3 and audible alarm unit.Photoelectrical coupler is fixed on the both sides of gas sensor by a spill machinery mount.During normal condition, the special-purpose aperture (about φ 2) that the light that E1 sends can pass on the gas sensor guard shines on the E2, make E2 be in conducting state, V4, V9, V10, V11 are in cut-off state, and direct current hummer B does not pipe, light emitting diode H3 is not luminous; When foreign matters such as dust were adsorbed on gas sensor guard surface, the light that E1 sends can't arrive E2, makes E2 be in cut-off state, and V4, V9, V10, V11 are in conducting state, and direct current hummer B sends and pipes, light emitting diode H3 sends light signal.
The gas sensor apparatus for monitoring working state is by diode V12, V13, V8, transistor V5, V6, resistance R 12, R13, R14, R15, capacitor C 4, compositions such as light emitting diode H2 and audible alarm unit are during gas sensor operate as normal (being to have electric current to pass through on the filament), V12, V13 conducting, make V5 be in conducting state, V6, V8, V10, V11 are in cut-off state, and direct current hummer B does not pipe, light emitting diode H2 is not luminous; When gas sensor abnormal work (be on the filament no current by), V12, V13 end, and make V5 be in cut-off state, and V6, V8, V10, V11 are in conducting state, and direct current hummer B sends and pipes, light emitting diode H2 sends light signal.
The combustible gas monitoring means is by gas sensor A, sensor base, transistor V3, diode V2, V7, Sheffer stroke gate 4Y1,4Y2,4Y3, resistance R 3, RP, R4, R5, R6, R7, capacitor C 3, light emitting diode H1, compositions such as audible alarm unit are when no combustible gas leaks, 1 pin and the resistance between 3 pin of gas sensor are very big, make V3 be in cut-off state, V7, V10, V11 are in cut-off state, and V direct current hummer B does not pipe, light emitting diode H1 luminous signal not.When gas leakage, 1 pin of gas sensor and the resistance between 3 pin sharply reduce, and V3 is in conducting state, makes V7, V10, V11 be in conducting state, and direct current hummer B sends and pipes, light emitting diode H1 sends light signal.
The audible alarm unit is by direct current acoustical generator B, transistor V10, V11, compositions such as resistance R 16, R17, R18, R19, R20; C1, R1 are anti-noise cancellation circuit, and R2, C2 are the protecting against shock circuit.
Main annexation: control module (except E1, the E2), acoustical generator, luminescent device are welded on the same printed circuit board (PCB) and are fixed in the casing, gas sensor is plugged on its socket, socket is connected with circuit board in the casing by lead and another set of plug, seat, E1, E2 are fixed on the both sides of gas sensor by a spill machinery mount.
Debugging step:
1. the combustible gas monitoring means in the debugging control unit at first: (as QR-112) inserts its base with gas sensor, put into the airbag of the combustible gas (as rock gas) that contains finite concentration (as 0.2%) together, regulator potentiometer RP makes H1 luminous, and the audible alarm unit sends the sound simultaneously;
2. debugging gas sensor sensitivity monitoring device: block aperture on the gas sensor guard with a thin rod, at this moment photoelectric receiving tube E2 should end, and causes the V4 conducting to make the luminous warning of H3, and while V9 conducting makes the audible alarm unit send the sound;
3. debugging gas sensor apparatus for monitoring working state: with gas sensor under the hand-lifting, at this moment V12, V13 end, and cause that V5 ends, the V6 conducting, the luminous warning of H2, and V8 conducting simultaneously makes the audible alarm unit send the sound;
4. other circuit debugging: this utility model is contained on the motor vehicles, starts motor vehicles, utility model is answered operate as normal.
Claims (3)
1. monitor inflammable gas and leak and can monitor simultaneously the whether electronic alarm of operate as normal and performance quality of its sensor for one kind, form by gas sensor, control module, acoustical generator, luminescent device, power supply, casing, it is characterized in that having set up in the described control module gas sensor sensitivity monitoring device, described gas sensor is plugged on its base and through connecting lead and places outside the casing.
2. electronic alarm according to claim 1 is characterized in that having set up in the described control module gas sensor apparatus for monitoring working state and anti-noise cancellation circuit and protecting against shock circuit.
3. according to claim 1 and 2 described electronic alarms, it is characterized in that described gas sensor sensitivity monitoring device is made up of photoelectrical coupler and peripheral circuit thereof, described gas sensor apparatus for monitoring working state is made up of two diodes and the peripheral circuit thereof that are serially connected on the gas sensor filament.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98233210 CN2374927Y (en) | 1998-12-03 | 1998-12-03 | Novel combustible gas leakage alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98233210 CN2374927Y (en) | 1998-12-03 | 1998-12-03 | Novel combustible gas leakage alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2374927Y true CN2374927Y (en) | 2000-04-19 |
Family
ID=33982000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98233210 Expired - Fee Related CN2374927Y (en) | 1998-12-03 | 1998-12-03 | Novel combustible gas leakage alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2374927Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426334C (en) * | 2001-09-17 | 2008-10-15 | 理研计器株式会社 | portable gas alarm |
| CN103425119A (en) * | 2012-05-23 | 2013-12-04 | 株式会社堀场制作所 | Test system, device management apparatus and vehicle performance test system |
-
1998
- 1998-12-03 CN CN 98233210 patent/CN2374927Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100426334C (en) * | 2001-09-17 | 2008-10-15 | 理研计器株式会社 | portable gas alarm |
| CN103425119A (en) * | 2012-05-23 | 2013-12-04 | 株式会社堀场制作所 | Test system, device management apparatus and vehicle performance test system |
| CN103425119B (en) * | 2012-05-23 | 2018-10-19 | 株式会社堀场制作所 | Test system, equipment management device and vehicle performance test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |