CN108825307A - Monitoring system is used in a kind of protection of safety of coal mines - Google Patents
Monitoring system is used in a kind of protection of safety of coal mines Download PDFInfo
- Publication number
- CN108825307A CN108825307A CN201810754028.2A CN201810754028A CN108825307A CN 108825307 A CN108825307 A CN 108825307A CN 201810754028 A CN201810754028 A CN 201810754028A CN 108825307 A CN108825307 A CN 108825307A
- Authority
- CN
- China
- Prior art keywords
- shell
- fixedly connected
- detection probe
- chip microcontroller
- safety
- 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.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 57
- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 239000000523 sample Substances 0.000 claims abstract description 44
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 239000002341 toxic gas Substances 0.000 abstract description 11
- 230000036541 health Effects 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 238000005065 mining Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of safety of coal mines protection monitoring systems, including shell, the right side of the shell is fixedly connected sequentially from top to bottom Carbon Monoxide Detection probe, CH_4 detection probe and sulfur dioxide detection probe, the positive top of shell is fixedly connected with digital display, the shell front and bottom for being located at digital display is fixedly connected with warning light, the front of the shell and bottom for being located at warning light is fixedly connected with loudspeaker.The cooperation that the present invention passes through setting shell, Carbon Monoxide Detection probe, CH_4 detection probe, sulfur dioxide detection probe, digital display, loudspeaker, start button, warning light, second partition, battery and single-chip microcontroller, solves traditional safety of coal mines protective device, do not have the function of detection toxic gas, after producing toxic gas inside coal mine, the problem of coal mine working personnel tend not to discover in time, are damaged so as to cause coal mine working personnel's health.
Description
Technical field
The present invention relates to safety of coal mines safeguard technical field, monitoring system is used in specially a kind of safety of coal mines protection.
Background technique
Coal mine is the mankind in the region of the mining area exploitation coal resources rich in coal, is generally divided into underground mine and outdoor coal
Mine, being typically chosen to underground digging tunnel digging coal mine is underground mine, and coal is solid fuel, is the one of kaustobilite
Kind, the presence of the dangerous gas such as carbon monoxide, biogas, in the behind of modern society's fast development, coal are frequently accompanied by coal seam
The contribution of mining industry can not be substituted, the superiority of price, and the scale of exploitation makes coal industry affect the hair of entire society
Exhibition, but in process of coal mining, the frequent generation of coal mining accident, and existing safety of coal mines protective device, do not have
After detecting toxic gas, the function of timely warning reminding staff is being filled with for a long time so as to cause coal miner
It under the working environment of poisonous gas, works, so as to cause coal mine working, human life is on the hazard safely, for this purpose, we mention
Monitoring system is used in a kind of safety of coal mines protection out.
Summary of the invention
The purpose of the present invention is to provide a kind of safety of coal mines protection monitoring system, having inside real-time detection coal mine is
It is no to contain toxic gas, after detecting toxic gas, in time the advantages of prompting coal mine working personnel, solve traditional coal mine peace
Full protection device does not have the function of detection toxic gas, after toxic gas is produced inside coal mine, coal mine working personnel
The problem of tending not to discover in time, being damaged so as to cause coal mine working personnel's health.
To achieve the above object, the present invention provides the following technical solutions：A kind of safety of coal mines protection monitoring system, including
Shell, the right side of the shell is fixedly connected sequentially from top to bottom Carbon Monoxide Detection probe, CH_4 detection probe and dioxy
Change sulphur detection probe, the positive top of shell is fixedly connected with digital display, and the shell is positive and is located at digital aobvious
Show that the bottom of device is fixedly connected with warning light, the front of the shell and bottom for being located at warning light is fixedly connected with loudspeaker, institute
It states and is fixedly connected with start button on the left of shell, the bottom of the housing cavity is fixedly connected with battery, the shell
Inner cavity and it is located at the top of battery and is fixedly connected with second partition, the inner cavity of the shell and the right side being located at the top of second partition
Side is fixedly connected with single-chip microcontroller, the output of the Carbon Monoxide Detection probe, CH_4 detection probe and sulfur dioxide detection probe
End is unidirectionally electrically connected with the input terminal of single-chip microcontroller, and the output end of the battery and the input terminal of single-chip microcontroller unidirectionally electrically connect
Connect, the output end of the start button and the input terminal of single-chip microcontroller are unidirectionally electrically connected, the output end of the single-chip microcontroller respectively with
The input terminal of digital display, loudspeaker and warning light is unidirectionally electrically connected.
Preferably, the surface activity of the loudspeaker is connected with cover sheet, the two sides of the case top and bottom
Two sides are fixedly connected to mounting blocks, and the surface of the mounting blocks offers threaded hole.
Preferably, the inner cavity of the shell and be located at single-chip microcontroller at the top of be fixedly connected with first partition, the shell
Inner cavity and be located at first partition at the top of be fixedly connected with backup power source, the input of the output end and single-chip microcontroller of the backup power source
End is unidirectional to be electrically connected.
Preferably, the bottom on the left of the shell offers heat release hole, the left side of the shell and is located at start button
Top is fixedly connected with Emergency Light button, and headlamp is fixedly connected at the top of the shell, the Emergency Light button
The input terminal of output end and single-chip microcontroller is unidirectionally electrically connected, and the output end of the single-chip microcontroller and the input terminal of headlamp are unidirectionally electrical
Connection.
Preferably, the model MS2200 of the Carbon Monoxide Detection probe, the model of the CH_4 detection probe
MC113, the model CLE-0421-400 of the sulfur dioxide detection probe, the model LX- of the digital display
12864B11, the model QA-2101F of the loudspeaker, the model AT89C52 of the single-chip microcontroller.
Compared with prior art, beneficial effects of the present invention are as follows：
1, the present invention by setting shell, Carbon Monoxide Detection probe, CH_4 detection probe, sulfur dioxide detection probe,
The cooperation of digital display, loudspeaker, start button, warning light, second partition, battery and single-chip microcontroller solves traditional
Safety of coal mines protective device does not have the function of detection toxic gas, after toxic gas is produced inside coal mine, coalman
The problem of tending not to discover in time as personnel, being damaged so as to cause coal mine working personnel's health.
2, the present invention plays the role of protecting loudspeaker, prevents loudspeaker by coalman by being provided with cover sheet
Make to damage after personnel accidentally collide, it, can not be in time to coal mine so as to cause when the device detects pernicious gas
Staff and the problem of alarm, by being provided with mounting blocks and threaded hole, facilitates the installation and removal of the device, by setting
Backup power source has been set, the case where using the time, avoid the occurrence of not enough power supply of the device is enhanced, by being provided with heat release hole,
The heat dissipation effect of the device is enhanced, by being provided with Emergency Light button and headlamp, when being in an emergency, coalman
The device can be dismantled by making personnel, then start headlamp by Emergency Light button, to play the role of illumination.
Detailed description of the invention
Fig. 1 is front view of the present invention；
Fig. 2 is schematic diagram of internal structure of the present invention；
Fig. 3 is present system schematic diagram.
In figure：1 shell, 2 Carbon Monoxide Detections probe, 3 CH_4 detections probe, 4 sulfur dioxide detection probes, 5 numbers are aobvious
Show device, 6 loudspeakers, 7 cover sheets, 8 start buttons, 9 Emergency Light buttons, 10 warning lights, 11 mounting blocks, 12 threaded holes, 13
Headlamp, 14 first partitions, 15 second partitions, 16 batteries, 17 heat release holes, 18 backup power sources, 19 single-chip microcontrollers.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, the bottom of a kind of safety of coal mines protection monitoring system, including shell 1,1 left side of shell opens up
There is a heat release hole 17, the left side of the shell 1 and top for being located at start button 8 is fixedly connected with Emergency Light button 9, the top of shell 1
Portion is fixedly connected with headlamp 13, and the output end of Emergency Light button 9 is unidirectionally electrically connected with the input terminal of single-chip microcontroller 19, monolithic
The output end of machine 19 and the input terminal of headlamp 13 are unidirectionally electrically connected, and by being provided with heat release hole 17, enhance the device
Heat dissipation effect, by being provided with Emergency Light button 9 and headlamp 13, when being in an emergency, coal mine working personnel can be incited somebody to action
The device is dismantled, and then starts headlamp 13 by Emergency Light button 9, thus play the role of illumination, the right side of shell 1
Side is fixedly connected sequentially from top to bottom Carbon Monoxide Detection probe 2, CH_4 detection probe 3 and sulfur dioxide detection probe 4, shell
The positive top of body 1 is fixedly connected with digital display 5, and the positive and bottom positioned at digital display 5 of shell 1 is fixedly connected with
Warning light 10, the front of shell 1 and the bottom for being located at warning light 10 are fixedly connected with loudspeaker 6, the surface activity connection of loudspeaker 6
There is cover sheet 7, the two sides at 1 top of shell and the two sides of bottom are fixedly connected to mounting blocks 11, and the surface of mounting blocks 11 is opened
Play the role of protecting loudspeaker 6, prevent loudspeaker 6 by coalman by being provided with cover sheet 7 equipped with threaded hole 12
Make to damage after personnel accidentally collide, it, can not be in time to coal mine so as to cause when the device detects pernicious gas
Staff and the problem of alarm, by being provided with mounting blocks 11 and threaded hole 12, facilitates the installation and removal of the device, shell
The left side of body 1 is fixedly connected with start button 8, and the bottom of 1 inner cavity of shell is fixedly connected with battery 16, the inner cavity of shell 1 and
Second partition 15, the inner cavity of shell 1 and the right side for being located at 15 top of second partition are fixedly connected with positioned at the top of battery 16
It is fixedly connected with single-chip microcontroller 19, the inner cavity of the shell 1 and top for being located at single-chip microcontroller 19 is fixedly connected with first partition 14, shell 1
Inner cavity and be located at the top of first partition 14 and be fixedly connected with backup power source 18, the output end and single-chip microcontroller 19 of backup power source 18
Input terminal be unidirectionally electrically connected, by be provided with backup power source 18, enhance the device use the time, avoid the occurrence of electricity
Insufficient situation, the output end of Carbon Monoxide Detection probe 2, CH_4 detection probe 3 and sulfur dioxide detection probe 4 is and monolithic
The input terminal of machine 19 is unidirectionally electrically connected, and the output end of battery 16 is unidirectionally electrically connected with the input terminal of single-chip microcontroller 19, starting
The output end of button 8 and the input terminal of single-chip microcontroller 19 are unidirectionally electrically connected, the output end of single-chip microcontroller 19 respectively with digital display
5, the input terminal of loudspeaker 6 and warning light 10 is unidirectionally electrically connected, the model MS2200 of Carbon Monoxide Detection probe 2, methane
The model MC113 of detection probe 3, the model CLE-0421-400 of sulfur dioxide detection probe 4, the type of digital display 5
Number be LX-12864B11, the model QA-2101F of loudspeaker 6, the model AT89C52 of single-chip microcontroller 19.
In use, playing the work of carbon monoxide content inside detection coal mine by being provided with Carbon Monoxide Detection probe 2
With by playing the role of detecting methane content inside coal mine, by being provided with titanium dioxide provided with CH_4 detection probe 3
Sulphur detection probe 4 plays the role of detecting coal mine inner silica sulfur content, by being provided with digital display 5, play
The effect for showing these monitoring data facilitates coal mine working personnel intuitively to view detection data, when each detection probe is examined
When measuring that harmful gas concentration is higher in coal mine, single-chip microcontroller 19 will control loudspeaker 6, carry out loudspeaking to coal mine working personnel and mention
It wakes up, so that coal mine working personnel be facilitated to take appropriate measures in time, personal safety is avoided to be damaged, by being provided with starting
Button 8 facilitates coal mine working personnel to start the device, by being provided with battery 16, plays the role of power supply, passes through setting
Warning light 10, when the device operates normally, warning light 10 carries out light prompting, informs that the staff device is normally transported
Row.
In summary：Safety of coal mines protection monitoring system is examined by shell 1, Carbon Monoxide Detection probe 2, methane
Probing head 3, sulfur dioxide detection probe 4, digital display 5, loudspeaker 6, start button 8, warning light 10, second partition 15,
The cooperation of battery 16 and single-chip microcontroller 19 solves traditional safety of coal mines protective device, does not have detection toxic gas
Function, after toxic gas is produced inside coal mine, coal mine working personnel tend not to discover in time, so as to cause coal mine working
The problem of personnel's health is damaged.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of safety of coal mines protection monitoring system, including shell (1), it is characterised in that：The right side of the shell (1) is from upper
Being fixedly connected sequentially under has Carbon Monoxide Detection probe (2), CH_4 detection probe (3) and sulfur dioxide detection probe (4), institute
It states shell (1) positive top to be fixedly connected with digital display (5), the shell (1) is positive and is located at digital display (5)
Bottom be fixedly connected with warning light (10), the front of the shell (1) and the bottom for being located at warning light (10) is fixedly connected and raises
Sound device (6) is fixedly connected with start button (8) on the left of the shell (1), and the bottom of shell (1) inner cavity is fixedly connected
Have battery (16), the inner cavity of the shell (1) and be located at battery (16) at the top of be fixedly connected with second partition (15), institute
It states the inner cavity of shell (1) and the right side being located at the top of second partition (15) is fixedly connected with single-chip microcontroller (19), the carbon monoxide
Input of the output end of detection probe (2), CH_4 detection probe (3) and sulfur dioxide detection probe (4) with single-chip microcontroller (19)
End is unidirectional to be electrically connected, and the input terminal of the output end and single-chip microcontroller (19) of the battery (16) is unidirectionally electrically connected, described to open
The input terminal of the output end and single-chip microcontroller (19) of dynamic button (8) is unidirectionally electrically connected, the output end difference of the single-chip microcontroller (19)
It is unidirectionally electrically connected with the input terminal of digital display (5), loudspeaker (6) and warning light (10).
2. a kind of safety of coal mines protection monitoring system according to claim 1, it is characterised in that：The loudspeaker (6)
Surface activity be connected with cover sheet (7), the two sides of two sides and bottom at the top of the shell (1) are fixedly connected to installation
The surface of block (11), the mounting blocks (11) offers threaded hole (12).
3. a kind of safety of coal mines protection monitoring system according to claim 1, it is characterised in that：The shell (1)
Inner cavity and be located at single-chip microcontroller (19) at the top of be fixedly connected with first partition (14), the inner cavity of the shell (1) and be located at first
It is fixedly connected at the top of partition (14) backup power source (18), the output end of the backup power source (18) is defeated with single-chip microcontroller (19)
Enter the unidirectional electric connection in end.
4. a kind of safety of coal mines protection monitoring system according to claim 1, it is characterised in that：The shell (1) is left
The bottom of side offers heat release hole (17), and the left side of the shell (1) and being located at the top of start button (8) is fixedly connected with tight
Anxious lighting button (9) is fixedly connected with headlamp (13) at the top of the shell (1), the output of the Emergency Light button (9)
It holds and is unidirectionally electrically connected with the input terminal of single-chip microcontroller (19), the output end of the single-chip microcontroller (19) and the input terminal of headlamp (13)
It is unidirectional to be electrically connected.
5. a kind of safety of coal mines protection monitoring system according to claim 1, it is characterised in that：The carbon monoxide inspection
The model MS2200 of probing head (2), the model MC113 of the CH_4 detection probe (3), the sulfur dioxide detection probe
(4) model CLE-0421-400, the model LX-12864B11 of the digital display (5), the loudspeaker (6)
Model QA-2101F, the model AT89C52 of the single-chip microcontroller (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810754028.2A CN108825307A (en) | 2018-07-10 | 2018-07-10 | Monitoring system is used in a kind of protection of safety of coal mines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810754028.2A CN108825307A (en) | 2018-07-10 | 2018-07-10 | Monitoring system is used in a kind of protection of safety of coal mines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108825307A true CN108825307A (en) | 2018-11-16 |
Family
ID=64136854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810754028.2A Pending CN108825307A (en) | 2018-07-10 | 2018-07-10 | Monitoring system is used in a kind of protection of safety of coal mines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108825307A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788680A (en) * | 2019-01-16 | 2019-05-21 | 浙江柏烙尼电子有限公司 | A kind of multifunctional communication cabinet |
| CN110118856A (en) * | 2019-05-17 | 2019-08-13 | 重庆德旭企业管理有限公司 | A kind of environmental protection CH_4 detection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201628706U (en) * | 2010-01-28 | 2010-11-10 | 南京北路自动化系统有限责任公司 | Four-gas detection device based on wireless fidelity |
| US20110309931A1 (en) * | 2010-06-21 | 2011-12-22 | Rose Mark D | Low-power wirelessly-linked rfid tracking system |
| CN105444022A (en) * | 2014-09-29 | 2016-03-30 | 固安翌光科技有限公司 | Lighting device for coal mine |
| CN106640198A (en) * | 2016-12-28 | 2017-05-10 | 河南工业和信息化职业学院 | Coal mine underground roadway ventilation alarm device |
| CN206684907U (en) * | 2017-04-08 | 2017-11-28 | 楠江集团有限公司 | A kind of CH_4 detection warning device |
| CN107479441A (en) * | 2017-08-22 | 2017-12-15 | 武汉理工大学 | Intelligent management system for coal mine production safety |
-
2018
- 2018-07-10 CN CN201810754028.2A patent/CN108825307A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201628706U (en) * | 2010-01-28 | 2010-11-10 | 南京北路自动化系统有限责任公司 | Four-gas detection device based on wireless fidelity |
| US20110309931A1 (en) * | 2010-06-21 | 2011-12-22 | Rose Mark D | Low-power wirelessly-linked rfid tracking system |
| CN105444022A (en) * | 2014-09-29 | 2016-03-30 | 固安翌光科技有限公司 | Lighting device for coal mine |
| CN106640198A (en) * | 2016-12-28 | 2017-05-10 | 河南工业和信息化职业学院 | Coal mine underground roadway ventilation alarm device |
| CN206684907U (en) * | 2017-04-08 | 2017-11-28 | 楠江集团有限公司 | A kind of CH_4 detection warning device |
| CN107479441A (en) * | 2017-08-22 | 2017-12-15 | 武汉理工大学 | Intelligent management system for coal mine production safety |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109788680A (en) * | 2019-01-16 | 2019-05-21 | 浙江柏烙尼电子有限公司 | A kind of multifunctional communication cabinet |
| CN110118856A (en) * | 2019-05-17 | 2019-08-13 | 重庆德旭企业管理有限公司 | A kind of environmental protection CH_4 detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202740662U (en) | Centralized control type firefighting emergency system | |
| CN204540967U (en) | For the crash helmet of environmental information monitoring | |
| CN108825307A (en) | Monitoring system is used in a kind of protection of safety of coal mines | |
| CN207922021U (en) | A kind of emergent bulkhead lamp | |
| CN207934578U (en) | A kind of electric power safety rail conveniently installed and used | |
| CN204187301U (en) | The mine lamp of a kind of gas management and early warning | |
| CN204026180U (en) | A kind of intelligent mine lamp with call function | |
| CN206684907U (en) | A kind of CH_4 detection warning device | |
| CN202015431U (en) | Integrated fire protection evacuation indicating system | |
| CN205025503U (en) | Methane detection alarm casing with waterproof jube | |
| CN207541766U (en) | A kind of combustible gas probe | |
| CN206729298U (en) | A kind of Gas Outburst prior-warning device | |
| CN208687576U (en) | A kind of Explosion-proof miner's lamp of alarming for coal mine | |
| CN211371941U (en) | Natural gas line leaks alarm device | |
| CN203369436U (en) | Gas monitoring and alarming safety helmet | |
| CN107701237A (en) | A kind of multi-functional cap lamp | |
| CN207351884U (en) | Methane transducer | |
| CN204754963U (en) | Methane monitoring devices in pit | |
| CN205624664U (en) | Novel multi -functional miner's lamp cap | |
| CN207067119U (en) | Convenient fixed gas density pre-warning detector | |
| CN207611026U (en) | A kind of mining methane sensor | |
| CN211556841U (en) | Novel electric power protection cuts off device | |
| CN217238902U (en) | Automatic power-off protection device for gas detection | |
| CN206145469U (en) | Novel multi -functional miner's lamp | |
| CN212214414U (en) | Electric bus battery fire extinguishing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181116 |