CN212027881U - Tunnel gas grading control system - Google Patents
Tunnel gas grading control system Download PDFInfo
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- CN212027881U CN212027881U CN202020371083.6U CN202020371083U CN212027881U CN 212027881 U CN212027881 U CN 212027881U CN 202020371083 U CN202020371083 U CN 202020371083U CN 212027881 U CN212027881 U CN 212027881U
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Abstract
The utility model discloses a tunnel gas classification control system, including the tunnel in gas observing and controlling unit and the remote monitoring room display element, the tunnel in gas observing and controlling unit includes first controller and first wireless communication module, the input termination of first controller has button input module and gas concentration detection module, the output termination of first controller has first fan speed regulator, second fan speed regulator, on-the-spot alarm module and on-the-spot display module, the output termination of first fan speed regulator has the forced draught blower, the output termination of second fan speed regulator has the air exhauster; the remote monitoring room display unit comprises a second controller and a second wireless communication module, and the output end of the second controller is connected with a remote alarm module and a remote display module. The utility model discloses system simple structure, reasonable in design, it is convenient to realize, can effectively use in middle-size and small-size tunnel, carries out hierarchical control according to the difference of gas concentration in the tunnel, improves production safety, excellent in use effect, convenient to popularize and use.
Description
Technical Field
The utility model belongs to the technical field of the coal mine safety, concretely relates to tunnel gas grading control system.
Background
In the process of tunnel and mine excavation, gas among the cracks of a section with high gas content can be released due to disturbance on the stratum. The gas is a harmful gas mainly containing methane, and is colorless, tasteless, odorless and hard to detect. The gas concentration in the tunnel is too high, so that the oxygen concentration in the air is reduced, and an oxygen-poor asphyxia accident occurs; when the gas concentration exceeds a certain range, explosion hazards can be generated. Therefore, the gas content must be strictly controlled in the construction process of tunnels and mines.
At present, some large tunnel gas control systems are put into production and application in China, but a product which is really suitable for small and medium tunnels and mines is not available, a coal mine production safety monitoring system is introduced from the beginning of eighties in China, the coal mine production safety monitoring system goes through the processes of direct introduction, digestion and absorption, imitation matching and autonomous development, but most of the products are designed for large tunnels and mines, and the products have some problems to be solved, such as: firstly, the cost is high, the most basic configuration of the system is too large, and the operating cost is high; secondly, the control mode is single, and most ventilators cannot automatically adjust the wind speed according to the gas concentration in the mine; the system is complex to install and maintain and inconvenient to operate; and fourthly, the system must depend on professional maintenance teams and has higher requirements on personnel skills.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, provide a tunnel gas hierarchical control system, its system structure is simple, reasonable in design, and it is convenient to realize, can effectively use in middle-size and small-size tunnel, carries out hierarchical control according to the difference of gas concentration in the tunnel, improves production safety, excellent in use effect, convenient to popularize and use.
In order to solve the technical problem, the utility model discloses a technical scheme is: a tunnel gas classification control system comprises a tunnel gas measurement and control unit and a remote monitoring room display unit, wherein the tunnel gas measurement and control unit comprises a first controller and a first wireless communication module connected with the first controller, the input end of the first controller is connected with a key input module and a gas concentration detection module used for detecting the gas concentration in a tunnel, the output end of the first controller is connected with a first fan speed regulator, a second fan speed regulator, a field alarm module and a field display module, the output end of the first fan speed regulator is connected with a blower, and the output end of the second fan speed regulator is connected with an exhaust fan; the remote monitoring room display unit comprises a second controller and a second wireless communication module which is connected with the second controller and is in wireless connection and communication with the first wireless communication module, and the output end of the second controller is connected with a remote alarm module and a remote display module.
The input end of the first controller is connected with a first rotating speed sensor for detecting the rotating speed of the air feeder and a second rotating speed sensor for detecting the rotating speed of the exhaust fan.
In the tunnel gas grading control system, the input end of the first controller is connected with the positioning module.
In the tunnel gas grading control system, the first controller and the second controller are both embedded controllers.
The tunnel gas grading control system is characterized in that the gas concentration detection module comprises a plurality of methane sensors arranged at a plurality of detection points in the tunnel.
In the tunnel gas grading control system, the field alarm module and the remote alarm module both comprise audible and visual alarms.
In the tunnel gas grading control system, the field display module and the remote display module both comprise LED display screens.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses system structure is simple, reasonable in design, and it is convenient to realize.
2. The utility model sets a first warning value and a second warning value of the gas concentration in the tunnel through the key input module, when the gas concentration in the tunnel is lower than the first warning value, the blower blows the fresh air outside the tunnel into the tunnel, and the tunnel ventilation is kept; when the concentration of the gas in the tunnel is higher than a first warning value, the blower blows fresh air outside the tunnel into the tunnel, the exhaust fan extracts the gas in the tunnel, and the blower and the exhaust fan work simultaneously, so that the concentration of the gas in the tunnel is quickly and effectively reduced; when the gas concentration in the tunnel is higher than the second warning value, the air feeder stops working, the oxygen content in the tunnel is prevented from being improved, the gas in the tunnel is extracted by the exhaust fan, different gas grading controls are carried out according to the first warning value and the second warning value, the using effect is good, the possibility of tunnel gas explosion is reduced, and therefore production safety is ensured.
3. The utility model discloses a orientation module mark position to give first controller with position signal transmission, first controller sends position signal to the second controller through wireless communication module, makes things convenient for the position in tunnel in time to confirm by the staff of remote monitoring room, thereby in time takes effective measure.
4. The utility model discloses a scene alarm module and remote alarm module report to the police, and when the gas concentration in the tunnel was higher than first alert value or was higher than second alert value, scene alarm module and remote alarm module reported to the police, and the staff who reminds staff in the tunnel and the staff of remote monitoring room notice tunnel internal environment safety.
5. The utility model discloses can effectively use in middle-size and small-size tunnel, carry out hierarchical control according to the difference of gas concentration in the tunnel, improve production safety, excellent in use effect, convenient to popularize and use.
To sum up, the utility model discloses system simple structure, reasonable in design, it is convenient to realize, can effectively use in middle-size and small-size tunnel, carries out hierarchical control according to the difference of gas concentration in the tunnel, improves production safety, excellent in use effect, convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic block diagram of the system of the present invention.
Description of reference numerals:
1 — a first controller; 2-a first wireless communication module; 3-a key input module;
4, a gas concentration detection module; 5-a first fan speed regulator; 6-second fan speed controller;
7-a field alarm module; 8, a field display module; 9-a blower;
10-an exhaust fan; 11-a second controller; 12-a second wireless communication module;
13-remote alarm module; 14-a remote display module; 15 — a first rotational speed sensor;
16-a second rotational speed sensor; and 17, positioning the module.
Detailed Description
As shown in fig. 1, the utility model discloses a tunnel gas classification control system, gas observes and controls unit and remote monitoring room display unit in including the tunnel, the gas observes and controls unit in the tunnel includes first controller 1 and the first wireless communication module 2 that connects with first controller 1, the input termination of first controller 1 has button input module 3 and is used for detecting the gas concentration detection module 4 of gas concentration in the tunnel, the output termination of first controller 1 has first fan speed regulator 5, second fan speed regulator 6, on-the-spot alarm module 7 and on-the-spot display module 8, the output termination of first fan speed regulator 5 has forced draught blower 9, the output termination of second fan speed regulator 6 has air exhauster 10; the remote monitoring room display unit comprises a second controller 11 and a second wireless communication module 12 which is connected with the second controller 11 and is in wireless connection and communication with the first wireless communication module 2, and the output end of the second controller 11 is connected with a remote alarm module 13 and a remote display module 14.
In specific implementation, a first warning value and a second warning value of the gas concentration in the tunnel are set through the key input module 3, and the first warning value and the second warning value are stored in the first controller 1; the blower 9 is arranged outside the tunnel and used for sending fresh air outside the tunnel into the tunnel; the exhaust fan 10 is arranged in the tunnel to exhaust gas in the tunnel.
The utility model discloses a tunnel gas hierarchical control system, the input termination of first controller 1 has first speed sensor 15 that is used for detecting the forced draught blower 9 rotational speed and is used for detecting the second speed sensor 16 of 10 rotational speeds of air exhauster.
In specific implementation, the first rotation speed sensor 15 is used for detecting the rotation speed of the blower 9 in real time, and when the rotation speed value of the blower 9 detected by the first rotation speed sensor 15 is different from a rotation speed set value of the blower 9 preset in the first controller 1 according to the size and ventilation condition of the tunnel, the rotation speed of the blower 9 is adjusted by the first fan speed controller 5; the second rotation speed sensor 16 is used for detecting the rotation speed of the exhaust fan 10 in real time, and when the rotation speed value of the exhaust fan 10 detected by the second rotation speed sensor 16 is different from the rotation speed set value of the exhaust fan 10 preset in the first controller 1 according to the size of the tunnel and the ventilation condition, the rotation speed of the exhaust fan 10 is adjusted by the second fan speed controller 6.
The utility model discloses a tunnel gas hierarchical control system, the input termination of first controller 1 has orientation module 17.
In specific implementation, the positioning module 17 is used for realizing rapid positioning of the position in the tunnel where the gas concentration exceeds the standard in the remote monitoring room.
In this embodiment, the first controller 1 and the second controller 11 are both embedded controllers.
In this embodiment, the gas concentration detection module 4 includes a methane sensor disposed at a plurality of detection points in the tunnel.
In this embodiment, the on-site alarm module 7 and the remote alarm module 13 both include an audible and visual alarm.
During specific implementation, when the gas concentration in the tunnel is higher than a first warning value or a second warning value, the field alarm module 7 and the remote alarm module 13 alarm to remind workers in the tunnel and workers in the remote monitoring room to pay attention to the environmental safety in the tunnel.
In this embodiment, the on-site display module 8 and the remote display module 14 both include LED display screens.
During specific implementation, the real-time detection value, the first warning value and the second warning value of the gas concentration value in the tunnel are displayed through the field display module 8 and the remote display module 14, so that workers in the tunnel and workers in a remote monitoring room can conveniently and visually know the gas concentration in the tunnel.
When the utility model is used for hierarchical control, the staff sets a first warning value and a second warning value through the key input module 3 and stores the first warning value and the second warning value in the first controller 1, and the gas concentration detection module 4 detects the gas concentration in the tunnel in real time and transmits a gas concentration detection value to the first controller 1;
when the gas concentration detection value is smaller than a first warning value, the tunnel is considered to be in a safe state at the moment, and only the ventilation of the tunnel needs to be ensured, the first controller 1 drives the air feeder 9 to work through the first fan speed regulator 5, so that fresh air outside the tunnel is blown into the tunnel, the ventilation of the tunnel is maintained, and the fresh air is provided for workers in the tunnel;
when the gas concentration detection value is larger than a first warning value, the tunnel is considered to be in a dangerous state at the moment, but the gas concentration is not enough to cause explosion, the first controller 1 gives an alarm through the field alarm module 7 to remind workers in the tunnel to pay attention to work safety, meanwhile, the first controller 1 drives the blower 9 to work through the first fan speed regulator 5 to blow fresh air outside the tunnel into the tunnel, the first controller 1 drives the exhaust fan 10 to work through the second fan speed regulator 6 to exhaust gas in the tunnel, the gas in the tunnel is exhausted while being fed into the fresh air to dilute the gas concentration in the tunnel, and the gas concentration in the tunnel is quickly and effectively reduced under the condition of double pipes;
when the gas concentration detection value is greater than the second warning value, the gas concentration in the tunnel is considered to be prone to gas explosion at the moment, in order to prevent the air feeder 9 from blowing fresh air outside the tunnel into the tunnel, oxygen is brought to the tunnel, the oxygen content in the tunnel is improved, the possibility of gas explosion is improved, therefore the air feeder 9 does not work any more, the first controller 1 drives the exhaust fan 10 to work through the second fan speed regulator 6, the gas in the tunnel is extracted, meanwhile, the first controller 1 gives an alarm through the field alarm module 7, and workers in the tunnel are reminded of paying attention to work safety.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (7)
1. The utility model provides a hierarchical control system of tunnel gas which characterized in that: the tunnel gas measurement and control unit comprises a tunnel gas measurement and control unit and a remote monitoring room display unit, wherein the tunnel gas measurement and control unit comprises a first controller (1) and a first wireless communication module (2) connected with the first controller (1), the input end of the first controller (1) is connected with a key input module (3) and a gas concentration detection module (4) used for detecting the gas concentration in the tunnel, the output end of the first controller (1) is connected with a first fan speed regulator (5), a second fan speed regulator (6), a field alarm module (7) and a field display module (8), the output end of the first fan speed regulator (5) is connected with a blower (9), and the output end of the second fan speed regulator (6) is connected with an exhaust fan (10); the remote monitoring room display unit comprises a second controller (11) and a second wireless communication module (12) which is connected with the second controller (11) and is in wireless connection and communication with the first wireless communication module (2), and the output end of the second controller (11) is connected with a remote alarm module (13) and a remote display module (14).
2. The hierarchical control system of tunnel gas according to claim 1, characterized in that: the input termination of first controller (1) has first rotational speed sensor (15) and second rotational speed sensor (16) that are used for detecting air feeder (9) rotational speed and are used for detecting air exhauster (10) rotational speed.
3. The hierarchical control system of tunnel gas according to claim 1, characterized in that: the input end of the first controller (1) is connected with a positioning module (17).
4. The hierarchical control system of tunnel gas according to claim 1, characterized in that: the first controller (1) and the second controller (11) are both embedded controllers.
5. The hierarchical control system of tunnel gas according to claim 1, characterized in that: the gas concentration detection module (4) comprises a methane sensor arranged at a plurality of detection points in the tunnel.
6. The hierarchical control system of tunnel gas according to claim 1, characterized in that: and the field alarm module (7) and the remote alarm module (13) both comprise audible and visual alarms.
7. The hierarchical control system of tunnel gas according to claim 1, characterized in that: the on-site display module (8) and the remote display module (14) both comprise LED display screens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020371083.6U CN212027881U (en) | 2020-03-21 | 2020-03-21 | Tunnel gas grading control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020371083.6U CN212027881U (en) | 2020-03-21 | 2020-03-21 | Tunnel gas grading control system |
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| Publication Number | Publication Date |
|---|---|
| CN212027881U true CN212027881U (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020371083.6U Expired - Fee Related CN212027881U (en) | 2020-03-21 | 2020-03-21 | Tunnel gas grading control system |
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| CN (1) | CN212027881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567627A (en) * | 2021-07-23 | 2021-10-29 | 湖南致力工程科技有限公司 | Gas explosion-proof detector for underground operation and use method thereof |
-
2020
- 2020-03-21 CN CN202020371083.6U patent/CN212027881U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567627A (en) * | 2021-07-23 | 2021-10-29 | 湖南致力工程科技有限公司 | Gas explosion-proof detector for underground operation and use method thereof |
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Granted publication date: 20201127 |