CN210371297U - Locking device for local fan supply of coal mine gas - Google Patents
Locking device for local fan supply of coal mine gas Download PDFInfo
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- CN210371297U CN210371297U CN201921465691.7U CN201921465691U CN210371297U CN 210371297 U CN210371297 U CN 210371297U CN 201921465691 U CN201921465691 U CN 201921465691U CN 210371297 U CN210371297 U CN 210371297U
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Abstract
The utility model discloses a local fan blocking device that supplies of colliery gas, the device includes: the system comprises a monitoring substation, a power-off controller and a local fan control loop, wherein the output end of the monitoring substation is connected with the signal input end of the power-off controller; the output end of the power-off controller is connected in series with a control loop of the local fan and is connected in series with a start button of the local fan. Use the embodiment of the utility model provides an in inserting the output of outage controller into the control circuit of local confession fan, even after the local confession fan of tunnelling working face stops wind, and when the gas concentration of this working face exceeded 3%, tunnelling working face staff still can not start the local confession fan, consequently, has reduced the potential safety hazard of mine.
Description
Technical Field
The utility model relates to a control circuit, more specifically relates to local fan blocking device that supplies of colliery gas.
Background
In the coal mine production process, gas is one of the biggest threats to the safety production of the coal mine. Therefore, it is necessary to discharge the gas from the mine, but the organization of how to discharge the gas during the discharge process is a problem.
At present, local air supply fans, local fans for short, are generally used for forced ventilation. Typically, a local fan is used for each work surface to provide fresh air, which is blown out of the work surface to be discharged into the return air shaft after entering the work surface. In coal mine production, the requirement in coal mine safety production regulations is that when the gas concentration of a certain tunneling working face is higher than 3% due to the fact that coal and gas are protruded specially, a local fan is stopped, and meanwhile locking is carried out, so that manual starting is avoided. In the existing locking device, a circuit breaking controller is connected into a control loop of a local fan starting button, and when a sensor detects that the situation occurs, the control loop is disconnected. And then performing targeted treatment until the gas concentration of the tunneling working face is reduced to a safe level.
However, the inventor finds that although the control circuit of the start button is disconnected, the local fan cannot be started, but the start button is still in the control circuit of the local fan, so that a tunneling face worker may press the local fan button to start the local fan, and further gas is discharged, and if people work in a return air channel, or fire or explosion hazards occur due to the occurrence of electric sparks. Therefore, in the prior art, the workers may start the local supply fan to discharge gas at will, and the mine is further caused to have the potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a colliery gas local fan blocking device that supplies is provided to reduce the potential safety hazard in the mine.
The utility model discloses a solve above-mentioned technical problem through following technical scheme:
the utility model provides a local fan blocking device that supplies of colliery gas, the device includes: a monitoring substation, a power-off controller, and a local fan control loop, wherein,
the output end of the monitoring substation is connected with the signal input end of the power-off controller;
the output end of the power-off controller is connected in series with a control loop of the local fan and is connected in series with a start button of the local fan.
Optionally, a control relay is further disposed in the monitoring substation, and two terminals of an output end of the control relay are correspondingly connected to two terminals of an input end of the power-off controller, respectively.
Optionally, the monitoring substation is a KJ218X type monitoring substation.
Optionally, the power-off controller is a KDC-0.5/660 power-off controller.
Optionally, one terminal of the local fan control loop is connected to one terminal of the output end of the power-off controller;
one terminal of the local fan control loop is connected in series to one end of the starting button;
the other end of the start button is connected to the other terminal of the output of the power-down controller.
Compared with the prior art, the utility model has the following advantages:
use the embodiment of the utility model provides an in inserting the output of outage controller into the control circuit of local confession fan, even after the local confession fan of tunnelling working face stops wind, and when the gas concentration of this working face was higher than 3%, tunnelling working face staff still can not start local confession fan, consequently, has reduced the potential safety hazard of mine.
Drawings
Fig. 1 is a locking device for a local air supply fan of coal mine gas provided by an embodiment of the utility model.
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
Fig. 1 is that the embodiment of the utility model provides a local fan blocking device that supplies of colliery gas, as shown in fig. 1, the device includes: a KJ218X model monitoring substation, a KDC-0.5/660 model power-off controller, and a local fan control loop, wherein,
a control relay 10 is arranged in the monitoring substation, a negative output terminal 101 of an output end of the control relay is connected with a negative wiring terminal 201 of the power-off controller 20, and a positive output terminal 102 of the output end of the control relay is connected with a positive wiring terminal 202 of the power-off controller 20;
the output end of the power-off controller 20 is a normally closed contact K, and one end 203 of the normally closed contact K is connected with one end of a local fan starting button 30; the other end of the local fan activation button 30 is connected to a terminal 302, and the other end 204 of the normally closed contact K is connected to a terminal 301 of the local fan.
A local fan, i.e., a local fan, and a power supply for the local fan are connected between the terminal 301 and the terminal 302.
Use the embodiment of the utility model provides a time, when the gas concentration of tunnelling working face is normal, normally closed electric shock K is in the on-state, and the control relay 10 output control signal of control substation makes outage controller 20 switch-on, and then has accessed start button 30 to local fan control circuit, and the working face personnel can realize opening of local fan through operating start button and stop the operation.
However, when the gas concentration of the driving face is greater than 3%, a control signal can be output through the relay 10, after the power-off controller 20 receives an electric signal output by the control relay 10, the normally-closed electric shock K is cut off, and then the control loop of the local fan is cut off, so that the open circuit between the terminal 203 and the terminal 204 is realized, and further the starting button 30 and the local fan control loop are cut off, even if a working face person operates the starting button 30, the local fan cannot be started, at this time, even if the working face person presses the starting button, the local fan cannot be started, the possibility of unorganized and unscrupulous gas blowing and exhausting is avoided, the potential safety hazard is eliminated, and the safety coefficient of a mine is improved.
The embodiment of the utility model provides a control circuit switch-on start button through the start button of local confession fan to make local confession fan carry out the air feed operation. It should be noted that it is prior art that the monitoring substation switches on the start button through the control loop of the start button of the local supply fan, which is not shown in fig. 1.
It is emphasized that the control loop of the local supply fan and the control loop of the start button are two loops, wherein the control loop of the local supply fan is used for starting or closing the local supply fan; control loop of the start button the user activates or deactivates the start button.
By utilizing the mine safety monitoring system, on the basis of the control content of wind power locking and gas power locking, the combined logic control is added on the system software, meanwhile, the system monitoring substation chip is upgraded, the installation power-off control is realized by controlling the local fan switch starting circuit, and the methane wind power locking function is realized.
When the gas concentration of the tunneling working face is reduced to be below 3% after treatment, the monitoring substation sends a signal to the control relay 10, so that the normally closed electric shock K is closed, and the function of the starting button 30 can be recovered.
The embodiment of the utility model provides an adopt normally closed contact directly to concatenate with local fan switch start button, rather than concatenating with the on-off control circuit. This method is most desirable after ground testing, i.e., to disable the activation button of the switch. Therefore, the wiring avoids the phenomenon that local fan switches stop working and even stop wind and exceed the limit when the monitoring equipment and the control circuit are in fault.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. The utility model provides a local fan blocking device that supplies of colliery gas which characterized in that, the device includes: a monitoring substation, a power-off controller, and a local fan control loop, wherein,
the output end of the monitoring substation is connected with the signal input end of the power-off controller;
the output end of the power-off controller is connected in series with a control loop of the local fan and is connected in series with a start button of the local fan.
2. The coal mine gas local fan locking device as claimed in claim 1, wherein a control relay is further provided in the monitoring substation, and two terminals of an output end of the control relay are correspondingly connected with two terminals of an input end of the power-off controller respectively.
3. The coal mine gas local fan locking device as claimed in claim 1, wherein the monitoring substation is a KJ218X type monitoring substation.
4. The coal mine gas local fan locking device as claimed in claim 1, wherein the power-off controller is a KDC-0.5/660 type power-off controller.
5. The coal mine gas local fan locking device as claimed in claim 1, wherein a terminal of the local fan control loop is connected to a terminal of the power-off controller output terminal;
one terminal of the local fan control loop is connected in series to one end of the starting button;
the other end of the start button is connected to the other terminal of the output of the power-down controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921465691.7U CN210371297U (en) | 2019-09-04 | 2019-09-04 | Locking device for local fan supply of coal mine gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921465691.7U CN210371297U (en) | 2019-09-04 | 2019-09-04 | Locking device for local fan supply of coal mine gas |
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| CN210371297U true CN210371297U (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921465691.7U Active CN210371297U (en) | 2019-09-04 | 2019-09-04 | Locking device for local fan supply of coal mine gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608184A (en) * | 2019-09-04 | 2019-12-24 | 淮南矿业(集团)有限责任公司 | Locking device for local fan supply of coal mine gas |
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2019
- 2019-09-04 CN CN201921465691.7U patent/CN210371297U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608184A (en) * | 2019-09-04 | 2019-12-24 | 淮南矿业(集团)有限责任公司 | Locking device for local fan supply of coal mine gas |
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