CN202916227U - Methane and oxygen double-parameter alarm - Google Patents
Methane and oxygen double-parameter alarm Download PDFInfo
- Publication number
- CN202916227U CN202916227U CN 201220641180 CN201220641180U CN202916227U CN 202916227 U CN202916227 U CN 202916227U CN 201220641180 CN201220641180 CN 201220641180 CN 201220641180 U CN201220641180 U CN 201220641180U CN 202916227 U CN202916227 U CN 202916227U
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- methane
- housing
- oxygen
- case
- circuit board
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Abstract
The utility model discloses a methane and oxygen double-parameter alarm for continuously monitoring concentrations of methane and oxygen in the working environment with flammable and combustible inflammable gas mixture in a coal mine. According to the methane and oxygen double-parameter alarm, an electrochemical oxygen sensor (1) is arranged at the upper end on the left side in a case (16), and is connected with a ventilated window composed of a filter screen and a rotary cover (17); a digital display (2) is arranged at the upper part in the middle of the case (16); a mask touch switch (15) is arranged on the lower surface at the front part of the case (16); a circuit board (13) is arranged at the upper part inside the case (16); and moreover, a buzzer (9) and a thermocatalytic methane sensor (10) are arranged at the upper end on the right side in the case (16) respectively, and are connected with the circuit board. As the thermocatalytic methane sensor and the electrochemical oxygen sensor are adopted for the alarm, intelligent control, four-digit LED display and dual purposes of one machine are realized, detection speed is high, detection accuracy is high, and working efficiency is greatly improved.
Description
Technical field: the utility model relates to the concentration of continuous monitoring methane and oxygen in a kind of working environment that is widely used in existing under the coal mine inflammable and explosive inflammable gas potpourri, and carries out the methane oxygen two parameter alarms that sound and light alarm uses when transfiniting.
Background technology: at present; CO gas detects the detector tube that uses; mostly be the pipe in both sides isolate with separation layer and protective seam; can only detect the gas that generally contains petroleum gas; sensitivity is not high; detection speed is slow, can not remove interference, and oil vapour is felt simply helpless especially to the mensuration of CO gas when especially getting angry under the coal mine.
The utility model content: the utility model device has overcome the drawback of former methane and oxygen warning existence, a kind of employing thermocatalysis methane transducer and electrochemical oxygen sensor are provided, the embedded microcontroller Based Intelligent Control, dual-use, detection speed is fast, the high methane oxygen two parameter alarms that use of detected value accuracy.The purpose of this utility model is achieved through the following technical solutions: its electrochemical oxygen sensor 1 is arranged on housing 16 left inside upper ends, and be connected screen pack and be connected the transom 18 that forms with spiral cover and connect, digital display screen 2 is arranged on middle part on the housing 16, facial mask touch-switch 15 be arranged on housing 16 front below, circuit board 13 is arranged on the housing 16 inner, hummer 9 and thermocatalysis methane transducer 10 are separately positioned on housing 16 upper right the inners, and are connected connection with circuit board.
The beneficial effects of the utility model are: owing to adopt thermocatalysis methane transducer and electrochemical oxygen sensor, the embedded microcontroller Based Intelligent Control, four LED show, dual-use, detection speed is fast, and the detected value accuracy is high.Instrument adopts the film touch-switch, good seal performance, accurately and reliably.And volume is little, lightweight, simple to operation, easy to maintenance, thereby has greatly improved work efficiency.
Description of drawings: Fig. 1 is front view of the present utility model
Fig. 2 is that the A-A of Fig. 1 is to view
Embodiment: as shown in Figure 1 and Figure 2, its electrochemical oxygen sensor 1 is arranged on housing 16 left inside upper ends, and be connected screen pack and be connected the transom 18 that forms with spiral cover and connect, digital display screen 2 is arranged on middle part on the housing 16, facial mask touch-switch 15 be arranged on housing 16 front below, circuit board 13 is arranged on the housing 16 inner, and hummer 9 and thermocatalysis methane transducer 10 are separately positioned on housing 16 upper right the inners, and is connected connection with circuit board.
As shown in Figure 1 and Figure 2, described housing 16 interior middle parts arrange barrier 7, and electric battery 5 is movably arranged on 16 times inside of housing and barrier 7 lower ends, and battery cover board 14 is movably arranged on housing 16 posterior ends, and charging screw 6 is arranged on housing 16 lower bottom part two ends.
As shown in Figure 1 and Figure 2, the right-hand member both sides arrange respectively methane and demarcate valve 11 and warning diode 12 on the described housing 16.
As shown in Figure 1 and Figure 2,16 upper of described housings arrange respectively facial mask socket 3, supply socket 4 and socket 8.
Principle of work of the present utility model: when instrument places the environment that has methane gas, methane gas enters air chamber by the transom window of instrument, sensor (carrier catalyst element) surface in the air chamber produces flameless burning, its resistance increases, the Wheatstone bridge out of trim output voltage signal that carrier catalyst element and resistance form, the size of voltage signal is directly proportional with methane concentration.Signal A/D converter in the input single-chip microcomputer after linear amplifier amplifies is converted to digital signal, processes through microprocessor data, demonstrates methane concentration by charactron, and after the concentration of methane surpassed the alarm set point of setting, instrument sent the sound and light alarm signal.When instrument is used for measuring airborne oxygen, electrochemical sensor with diffusion way directly with environment in gas reaction, the voltage signal of generation linear change.Signal A/D converter in the input single-chip microcomputer after linear amplifier amplifies is converted to digital signal, processes through microprocessor data, demonstrates oxygen concentration by charactron, be lower than the alarm set point of setting when oxygen concentration after, instrument sends the sound and light alarm signal.When the concentration of methane and oxygen surpassed simultaneously or is lower than the safety value of setting, instrument sent sound, visual alarm, and the value of reading of Alternation Display methane and oxygen.Instrument has anti-high concentration methane impact function, when instrument detected extraneous methane concentration in continuous 30 seconds more than or equal to 4.00% the time, automatically cuts off power supply and the warning of catalysis element.Instrument has battery undervoltage and reports to the police and automatic shut-off function.
Use of the present utility model and method of operating are: alarm should be full of first electricity before going into the well and using on the ground.
1) start and shutdown: press on ﹠ off switch under off-mode, the instrument start enters the methane detected state.Under open state, press on ﹠ off switch, the instrument shutdown.
2) methane/oxygen shows switching: can switch between methane and oxygen by shift key.
3) displaying time, cell voltage: press the voltage key, then instrument elder generation displaying time shows cell voltage.
Claims (4)
1. methane oxygen two parameter alarms, it is characterized in that electrochemical oxygen sensor (1) is arranged on the left inside upper end of housing (16), and be connected screen pack and be connected 17 with spiral cover) transom (18) that forms connects, digital display screen (2) is arranged on the upper middle part of housing (16), facial mask touch-switch (15) be arranged on housing (16) front below, it is upper inner that circuit board (13) is arranged on housing (16), hummer (9) and thermocatalysis methane transducer (10) are separately positioned on the upper right the inner of housing (16), and are connected 13 with circuit board) connect.
2. methane oxygen two parameter alarms according to claim 1, it is characterized in that the middle part arranges barrier (7) in the described housing (16), electric battery (5) is movably arranged on inner under the housing (16) and barrier (7) lower end, battery cover board (14) is movably arranged on housing (16) posterior end, and charging screw (6) is arranged on housing (16) lower bottom part two ends.
3. methane oxygen two parameter alarms according to claim 1 is characterized in that the upper right-hand member both sides of described housing (16) arrange respectively methane and demarcate valve (11) and warning diode (12).
4. methane oxygen two parameter alarms according to claim 1 is characterized in that upper of described housing (16) arranges respectively facial mask socket (3), supply socket (4) and socket (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641180 CN202916227U (en) | 2012-11-16 | 2012-11-16 | Methane and oxygen double-parameter alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220641180 CN202916227U (en) | 2012-11-16 | 2012-11-16 | Methane and oxygen double-parameter alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202916227U true CN202916227U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220641180 Expired - Fee Related CN202916227U (en) | 2012-11-16 | 2012-11-16 | Methane and oxygen double-parameter alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202916227U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393212A (en) * | 2014-12-11 | 2015-03-04 | 哈尔滨东方报警设备开发有限公司 | Conveniently-replaced battery for portable gas detector |
| CN104406639A (en) * | 2014-12-26 | 2015-03-11 | 镇江中煤电子有限公司 | Coal mine underground multi-gas detection device and method thereof |
| CN105203712A (en) * | 2015-10-09 | 2015-12-30 | 扬中市南方矿用电器有限公司 | Multi-parameter sensor for GD5 coal mine |
| CN109030738A (en) * | 2018-07-27 | 2018-12-18 | 扬中市南方矿用电器有限公司 | A kind of hydrogen sulfide analyzer and its adjustment method |
| CN112578074A (en) * | 2019-09-30 | 2021-03-30 | 罗斯蒙特公司 | Combustion analyzer with simultaneous measurement of carbon monoxide and methane |
-
2012
- 2012-11-16 CN CN 201220641180 patent/CN202916227U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393212A (en) * | 2014-12-11 | 2015-03-04 | 哈尔滨东方报警设备开发有限公司 | Conveniently-replaced battery for portable gas detector |
| CN104406639A (en) * | 2014-12-26 | 2015-03-11 | 镇江中煤电子有限公司 | Coal mine underground multi-gas detection device and method thereof |
| CN105203712A (en) * | 2015-10-09 | 2015-12-30 | 扬中市南方矿用电器有限公司 | Multi-parameter sensor for GD5 coal mine |
| CN109030738A (en) * | 2018-07-27 | 2018-12-18 | 扬中市南方矿用电器有限公司 | A kind of hydrogen sulfide analyzer and its adjustment method |
| CN112578074A (en) * | 2019-09-30 | 2021-03-30 | 罗斯蒙特公司 | Combustion analyzer with simultaneous measurement of carbon monoxide and methane |
| CN112578074B (en) * | 2019-09-30 | 2022-11-22 | 罗斯蒙特公司 | Combustion analyzer with simultaneous measurement of carbon monoxide and methane |
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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: 20130501 Termination date: 20141116 |
|
| EXPY | Termination of patent right or utility model |