CN220819945U - Intrinsic safety type gas concentration sensor - Google Patents
Intrinsic safety type gas concentration sensor Download PDFInfo
- Publication number
- CN220819945U CN220819945U CN202321269102.4U CN202321269102U CN220819945U CN 220819945 U CN220819945 U CN 220819945U CN 202321269102 U CN202321269102 U CN 202321269102U CN 220819945 U CN220819945 U CN 220819945U
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- Prior art keywords
- shell
- probe
- air chamber
- circuit board
- transmitter
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- 239000000523 sample Substances 0.000 claims abstract description 80
- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 33
- 239000003245 coal Substances 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model provides an intrinsic safety type gas concentration sensor, which comprises a shell, a probe provided with a plug seat, a display arranged on the shell, a circuit board which is arranged in the shell and used for master control and comprises a master control chip, a buzzer arranged on the shell and used for alarming, an aviation plug used for externally connecting a power supply with the circuit board and externally communicating with the circuit board, a transmitter air chamber fixedly arranged below the shell, a probe protective cover detachably connected with the middle part of the lower side of the transmitter air chamber, and a plug connector which is sealed and extends out of the transmitter air chamber, wherein the probe is inserted and electrically connected with the plug connector of the circuit board in the transmitter air chamber through the plug seat of the probe; the display, the buzzer and the aviation plug are all electrically connected with the circuit board, and the main control chip is used for determining the type of the probe by inspecting the ID code of the current probe. According to the utility model, through the structural design that the probe is easy to detach and replaceable, the gas concentration sensor layout and operation and maintenance costs of enterprises can be greatly reduced.
Description
Technical Field
The utility model relates to the technical field of sensors, in particular to an intrinsic safety type gas concentration sensor.
Background
As is well known, in order to ensure safety in coal mines, particularly underground coal mines, a large number of sensors for detecting the concentration of carbon monoxide, carbon dioxide, methane, hydrogen sulfide, oxygen and the like are required to be arranged, various intrinsic safety type gas concentration sensors for coal mines at present mainly comprise a shell, a probe fixedly arranged on the shell and used for detecting corresponding gas, a circuit board fixedly arranged in the shell, a display device fixedly arranged on the shell and used for displaying detection data and the like, the probe, the shell and the circuit board are of fixed mounting structures which cannot be detached destructively, once the probe fails or is damaged in the use process, the whole gas sensor is scrapped, the whole gas sensor needs to be replaced, the shell, the circuit board, the display and the like which are not damaged are scrapped together, and the layout and operation costs of the gas concentration sensors for coal mines are high due to the large number of various gas sensors for coal mines. Therefore, the development of the gas concentration sensor which has stronger applicability and can reduce the cost and enhance the efficiency of the coal mine is a technical problem which needs to be solved in the industry.
Disclosure of utility model
The purpose of the utility model is that: in order to solve the problems in the prior art, the intrinsic safety type gas concentration sensor is provided, wherein the intrinsic safety type gas concentration sensor can be conveniently replaced by the same type of probe or different types of probes when the probes fail or fail, so that the layout and operation cost of the gas concentration sensor of enterprises such as coal mines is greatly reduced.
The technical scheme of the utility model is as follows: the utility model relates to an intrinsic safety type gas concentration sensor, which comprises a shell, a probe, a display, a circuit board, an aviation plug, an external power supply and an aviation plug, wherein the probe is used for detecting the gas concentration in the environment and is provided with a plug seat: the probe is inserted and electrically connected with the plugging head of the circuit board in the air chamber of the transmitter through the plugging seat of the probe, and the middle lower part of the probe is positioned in the hollow part of the probe protective cover.
The further scheme is as follows: the intrinsic safety type gas concentration sensor further comprises a buzzer which is arranged on the shell and used for alarming, and the buzzer is electrically connected with the circuit board.
The further scheme is as follows: the shell is a hollow square box-shaped structural member, and mounting holes are respectively formed in the lower side and the right side of the shell; the air chamber of the transmitter is a hollow special-shaped structural member, the middle parts of the upper side and the lower side of the air chamber of the transmitter are respectively provided with a mounting hole, the air chamber of the transmitter is fixedly connected with the upper side of the shell through the upper side of the air chamber of the transmitter, the upper side mounting holes of the air chamber of the transmitter are matched with the lower side mounting holes of the shell, and the plug connector of the circuit board is sealed and extends out of the air chamber of the transmitter after passing through the lower side mounting holes of the shell and the upper side mounting holes of the air chamber of the transmitter.
The further scheme is as follows: the lower side mounting hole of the transmitter air chamber is circular, and the inner wall of the lower side mounting hole is provided with internal threads for connection; the probe protective cover is a hollow structural member which is integrally cylindrical; the outer periphery of the upper end of the probe protective cover is provided with external threads matched with internal threads in a mounting hole at the lower side of the transmitter air chamber; the probe protective cover is detachably connected with the lower side mounting hole of the transmitter air chamber in a threaded fit manner.
The further scheme is as follows: the aviation plug is fixedly arranged in the right side mounting hole of the shell in a sealing way, and two power terminals for externally connecting a circuit board with a power supply and two communication terminals for externally communicating the circuit board in use are arranged in the aviation plug.
The further scheme is as follows: the shell is provided with an arc-shaped protection curtain which is integrated with or fixedly connected with the shell above the right side mounting hole.
The further scheme is as follows: the probe is internally provided with corresponding ID codes according to different detected gas types; the circuit board is provided with a main control chip, ID codes of different probes are arranged in the main control chip, and after the probes are installed or replaced, the main control chip and the probes communicate with each other to inspect the ID codes of the probes so as to determine the type of the current probes.
The further scheme is as follows: the display is a liquid crystal display screen, a touch screen or a digital display.
The further scheme is as follows: the intrinsic safety type gas concentration sensor further comprises a handle fixedly arranged at the upper end of the shell.
The utility model has the positive effects that: according to the utility model, through the integral structure, particularly the structural design that the probe is easy to assemble and disassemble, in the use process, if the probe fails or breaks down, the failed probe can be conveniently replaced by the probe of the same type or by the probe of different types according to use requirements, the circuit board can automatically identify the replaced probe type, and other parts of the intrinsic safety type gas concentration sensor except the probe are not required to be replaced, so that the gas concentration sensor is scrapped as a whole once the probe fails or breaks down in the prior art, and the arrangement and operation cost of the gas concentration sensor of enterprises such as coal mines can be greatly reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is a right side view of FIG. 1, partially schematic cross-section of the housing;
FIG. 4 is a schematic view of a partial explosion configuration at the transmitter plenum of FIG. 1.
The reference numerals in the above figures are as follows:
a housing 1, a protective curtain 1-1; a transmitter air chamber 2 and a probe protective cover 3; a probe 4, a socket 4-1; a circuit board 5, a plug 51; a display 6; an aviation plug 7; a buzzer 8; a handle 9.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description.
Example 1
Referring to fig. 1 to 4, the intrinsic safety type gas concentration sensor of the present embodiment mainly comprises a housing 1, a transmitter air chamber 2, a probe cover 3, a probe 4, a circuit board 5, a display 6, an aviation plug 7, a buzzer 8 and a handle 9.
The shell 1 is a hollow square box-shaped structural member, and mounting holes are respectively arranged below and on the right side of the shell 1. Preferably, the casing 1 is provided with an arc-shaped protective curtain 1-1 integrally or fixedly connected with the casing 1 above a mounting hole provided at the right side thereof.
The transmitter air chamber 2 is a hollow special-shaped structural member, the middle parts of the upper side and the lower side of the transmitter air chamber 2 are respectively provided with a mounting hole, the lower side mounting hole of the transmitter air chamber 2 is circular, and the inner wall of the lower side mounting hole is provided with internal threads for connection. The upper side of the transmitter air chamber 2 is fixedly connected with the lower side of the shell 1, and the upper side mounting hole of the transmitter air chamber 2 is matched with the lower side mounting hole of the shell 1.
The probe protective cover 3 is a hollow structural member which is integrally cylindrical; the upper end periphery of the probe protective cover 3 is provided with external threads matched with internal threads in the lower side mounting hole of the transmitter air chamber 2.
The probe 4 is a commercially available part, and the probe 4 is used for detecting the corresponding gas concentration in the environment, for example, the probe 4 may be a probe used for detecting the concentration of carbon monoxide, carbon dioxide, methane, hydrogen sulfide or oxygen, etc. The upper end of the probe 4 is provided with a socket 4-1 for electric connection, the external structures of the various probes 4 are the same, and each different probe 4 is internally provided with a corresponding set ID code, for example, the ID code of a carbon monoxide gas probe is set to 1, the ID code of a carbon dioxide gas probe is set to 2, and the ID code of a methane gas probe is set to 3 … ….
The circuit board 5 is fixedly arranged in the shell 1, a main control chip is arranged on the circuit board 5, ID codes of various gas probes are arranged in the main control chip, and in the embodiment, the main control chip preferably adopts a singlechip with the model of C8051F 021; a plug connector 51 electrically connected with the main control chip is arranged in the middle of the lower side of the circuit board 5; the plug connector 51 of the circuit board 5 extends out of the transmitter air chamber 2 after passing through the lower mounting hole of the shell 1 and the upper mounting hole of the transmitter air chamber 2 in a sealing manner; the probe 4 is inserted into the plug connector of the circuit board 5 through the plug connector 4-1 at the upper end of the probe 4, so that the probe 4 is electrically connected with the main control chip on the circuit board 5. The probe protective cover 3 is in threaded connection with the internal thread in the lower side mounting hole of the transmitter air chamber 2 through the external thread at the upper end of the probe protective cover, and the middle lower part of the probe 4 is positioned in the hollow part of the probe protective cover 3.
The display 6 is used for displaying relevant information such as detection and state; the display 6 is fixedly arranged on the front end face of the housing 1. The display 6 may be a liquid crystal display, a touch screen, or a digital display. The display 6 is electrically connected with the main control chip on the circuit board 5.
The aviation plug 7 is fixedly arranged in a sealing manner in a right side mounting hole of the shell 1. Two power terminals and two communication terminals are arranged in the aviation plug 7, the two power terminals are used for externally connecting a power supply to the circuit board 5, and the two communication terminals are used for communicating the circuit board 5 (specifically a main control chip) with the arranged external equipment during use.
The buzzer 8 is fixedly arranged on the front end face of the shell 1, and the buzzer 8 is electrically connected with the main control chip on the circuit board 5. The buzzer 8 is used for detecting data abnormality and alarming when the sensor fails; the buzzer 8 is preferably provided to facilitate the operation and maintenance personnel to find out that the gas concentration sensor is malfunctioning.
The handle 9 is fixedly arranged at the upper end of the shell 1, and the handle 9 is used for hanging during convenient carrying and installation. The handle 9 is preferably provided.
After the intrinsic safety type gas concentration sensor is powered on in use, a main control chip on the circuit board 5 starts to patrol the ID code of the probe 4 from the built-in ID code 1 through a UART issuing command until patrol is successful (i.e. the probe 4 is patrol to answer), the main control chip on the circuit board 5 can determine the type of the currently installed and working probe 4, then the main control chip on the circuit board 5 passes through the probe 4, receives detection data of the corresponding gas concentration uploaded by the probe 4, and sends a display 6 for real-time display after processing.
If the currently used probe 4 fails or fails, the buzzer 8 gives an alarm, a worker only needs to unscrew the probe protective cover 3, pull out the failed or failed probe 4, then, according to actual needs, a new similar or different type of probe 4 can be replaced, the sensor repeats the inspection operation until handshake is successful again, and then normal work is started again.
From the foregoing, it can be seen that, since the other circuit components are basically in the intrinsic safe sealed state, only the probe 4 is in the unsealed state, so the probe 4 is the most vulnerable circuit component in the severe use environment of the coal mine, and by adopting the intrinsic safe gas concentration sensor with the structure of the embodiment, the probe 4 can be conveniently replaced, all other components of the intrinsic safe gas concentration sensor can be reused, and the whole gas sensor is scrapped as soon as the probe fails or is damaged in the prior art, thereby greatly reducing the layout and operation cost of the gas concentration sensor for enterprises such as the coal mine.
The above embodiments are illustrative of the specific embodiments of the present utility model, and not restrictive, and various changes and modifications may be made by those skilled in the relevant art without departing from the spirit and scope of the utility model, and all such equivalent technical solutions are intended to be included in the scope of the utility model.
Claims (8)
1. The utility model provides an intrinsic safety type gas concentration sensor, includes the shell for detect the gaseous concentration in the environment and be equipped with the probe of bayonet socket, locate be used for data display's display on the shell, locate the circuit board that is used for the master control in the shell, locate and be used for on the shell circuit board external power source and the aviation plug of external communication connection, display and aviation plug all are connected its characterized in that with the circuit board electricity: the probe is inserted and electrically connected with the plug connector of the circuit board by the plug connector of the circuit board in the transmitter air chamber, and the middle lower part of the probe is positioned in the hollow part of the probe protective cover.
2. The intrinsic safety type gas concentration sensor according to claim 1, wherein: the alarm device also comprises a buzzer which is arranged on the shell and used for alarming, and the buzzer is electrically connected with the circuit board.
3. The intrinsic safety type gas concentration sensor according to claim 1, wherein: the shell is a hollow square box-shaped structural member, and mounting holes are respectively formed in the lower side and the right side of the shell; the air chamber of the transmitter is a hollow special-shaped structural member, the middle parts of the upper side and the lower side of the air chamber of the transmitter are respectively provided with a mounting hole, the air chamber of the transmitter is fixedly connected with the upper side of the shell through the upper side of the air chamber of the transmitter, the upper mounting holes of the air chamber of the transmitter are matched with the lower mounting holes of the shell, and the plug connector of the circuit board is sealed and extends out of the air chamber of the transmitter after passing through the lower mounting holes of the shell and the upper mounting holes of the air chamber of the transmitter.
4. The intrinsic safety type gas concentration sensor according to claim 3, wherein: the lower side mounting hole of the transmitter air chamber is circular, and the inner wall of the lower side mounting hole is provided with internal threads for connection; the probe protective cover is a hollow structural member which is integrally cylindrical; the outer periphery of the upper end of the probe protective cover is provided with external threads matched with internal threads in a mounting hole at the lower side of the transmitter air chamber; the probe protective cover is detachably connected with the lower side mounting hole of the transmitter air chamber in a threaded fit manner.
5. The intrinsic safety type gas concentration sensor according to claim 3, wherein: the aviation plug is fixedly arranged in the right side mounting hole of the shell in a sealing mode, and two power terminals for externally connecting a circuit board with a power supply and two communication terminals for externally communicating the circuit board in use are arranged in the aviation plug.
6. The intrinsic safety type gas concentration sensor according to claim 3, wherein: the shell is provided with an arc-shaped protection curtain which is integrated with or fixedly connected with the shell above the right side mounting hole.
7. The intrinsic safety type gas concentration sensor according to claim 1, wherein: the display is a liquid crystal display screen, a touch screen or a digital display.
8. The intrinsic safety type gas concentration sensor according to any one of claims 1 to 7, wherein: the lifting handle is fixedly arranged at the upper end of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321269102.4U CN220819945U (en) | 2023-05-23 | 2023-05-23 | Intrinsic safety type gas concentration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321269102.4U CN220819945U (en) | 2023-05-23 | 2023-05-23 | Intrinsic safety type gas concentration sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220819945U true CN220819945U (en) | 2024-04-19 |
Family
ID=90677055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321269102.4U Active CN220819945U (en) | 2023-05-23 | 2023-05-23 | Intrinsic safety type gas concentration sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220819945U (en) |
-
2023
- 2023-05-23 CN CN202321269102.4U patent/CN220819945U/en active Active
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