CN214007195U - Series local ventilator locking device - Google Patents
Series local ventilator locking device Download PDFInfo
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- CN214007195U CN214007195U CN202022458760.0U CN202022458760U CN214007195U CN 214007195 U CN214007195 U CN 214007195U CN 202022458760 U CN202022458760 U CN 202022458760U CN 214007195 U CN214007195 U CN 214007195U
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Abstract
The utility model relates to a locking device of a series local ventilator, which comprises a first gas sensor, a second gas sensor, a first power-off instrument, a second power-off instrument, a first safety monitoring substation and a second safety monitoring substation; the first gas sensor and the second gas sensor are respectively arranged at the front end of the local ventilator, and the first power failure instrument, the second power failure instrument, the first safety monitoring substation and the second safety monitoring substation are all arranged in a substation where a superior power supply of the local ventilator is located. The utility model discloses in, any one safety monitoring equipment relevant with control does not drop into normal operating, breaks down or before the fan methane sensor can not cut off and block two return circuits auxiliary ventilating fan power simultaneously and lead to unplanned unusual outage when taking place the mistake outage. The safety stability of the locking system of the underground local ventilator is greatly improved while the functional requirements of the safety monitoring system are met.
Description
Technical Field
The utility model relates to a coal mine safety technical field, concretely relates to series connection auxiliary ventilating fan blocking device.
Background
The gas overrun becomes a high-risk event of a modern coal mine accident, and serious loss is easily caused by improper treatment. The direct reason that the gas overrun accident of the tunneling working face of a certain mine happens is that the methane sensor under the mine gives a false alarm, the reading value reaches the outage value, and the system cuts off the double-loop power supply of the local ventilator of the tunneling working face controlled by the methane sensor, so that the local ventilator of the tunneling working face stops running, and further the methane gas concentration of the tunneling working face is continuously accumulated and rises to 3.95% in a short time. The methane sensor false alarm leads to the expansion accident of the gas overrun of the tunneling working face. If the emergency response is not timely, the site disposal is not proper, the accident is likely to be further expanded, and the gas explosion accident is caused.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned prior art exists, the utility model provides a series connection auxiliary ventilating fan blocking device for ventilation auxiliary ventilating fan safety monitoring system locking function's under the mine tandem state realization.
The utility model provides a technical scheme that its technical problem adopted is: constructing a locking device of a series local ventilator, which comprises a first gas sensor, a second gas sensor, a first power-off instrument, a second power-off instrument, a first safety monitoring substation and a second safety monitoring substation; the system comprises a local ventilator, a first gas sensor, a second gas sensor, a first power-off instrument, a second power-off instrument, a first safety monitoring substation and a second safety monitoring substation, wherein the first gas sensor and the second gas sensor are respectively arranged at the front end of the local ventilator;
the system comprises a first safety monitoring substation, a second safety monitoring substation, a first power-off instrument, a local ventilator upper-level power supply and a low-voltage feed switch, wherein the first gas sensor is connected to the input end of the first safety monitoring substation; one end of the second outage instrument is connected to the output end of the second safety monitoring substation, and the other end of the second outage instrument is connected with a low-voltage feed switch of a corresponding ventilator power supply in a substation where a local ventilator superior power supply is located; the first outage instrument and the second outage instrument realize the outage of the local ventilator by controlling the disconnection of a low-voltage feed switch of a corresponding ventilator power supply in a substation where a superior power supply of the local ventilator is located.
Wherein the first gas sensor and the second gas sensor are both methane sensors.
Wherein, first gas sensor and second gas sensor all set up in the local fan windward side 5m within range.
Wherein, first outage appearance and second outage appearance set up in the auxiliary ventilating fan distribution point.
Compared with the prior art, the locking device of the series local ventilator comprises a first gas sensor, a second gas sensor, a first power-off instrument, a second power-off instrument, a first safety monitoring substation and a second safety monitoring substation; the first gas sensor and the second gas sensor are respectively arranged at the front end of the local ventilator, and the first power failure instrument, the second power failure instrument, the first safety monitoring substation and the second safety monitoring substation are all arranged in a substation where a superior power supply of the local ventilator is located. The utility model discloses in, any one safety monitoring equipment relevant with control does not drop into normal operating, breaks down or before the fan methane sensor can not cut off and block two return circuits auxiliary ventilating fan power simultaneously and lead to unplanned unusual outage when taking place the mistake outage. The safety stability of the locking system of the underground local ventilator is greatly improved while the functional requirements of the safety monitoring system are met.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic structural diagram of a locking device of a series local ventilator provided by the present invention.
Fig. 2 is a schematic diagram of the practical application of the locking device of the series local ventilator provided by the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the utility model provides a locking device for a series local ventilator, which comprises a first gas sensor 1, a second gas sensor 2, a first power cut-off instrument 3, a second power cut-off instrument 4, a first safety monitoring substation 5 and a second safety monitoring substation 6; the system comprises a local ventilator 10, a first gas sensor 1, a second gas sensor 2, a first power-off instrument 3, a second power-off instrument 4, a first safety monitoring substation 5 and a second safety monitoring substation 6, wherein the first gas sensor 1 and the second gas sensor 2 are respectively arranged at the front end of the local ventilator, and the first power-off instrument, the second power-off instrument, the first safety monitoring substation and the second safety monitoring substation are all arranged in a substation where a high-level power supply 11 of the local ventilator is located;
the system comprises a first gas sensor 1, a second gas sensor 2, a first safety monitoring substation 5, a first power-off instrument 3, a local ventilator upper-level power supply and a low-voltage feed switch, wherein the first gas sensor 1 is connected to the input end of the first safety monitoring substation 5; one end of the second outage instrument 4 is connected to the output end of the second safety monitoring substation 6, and the other end of the second outage instrument is connected with a low-voltage feed switch of a corresponding ventilator power supply in a substation where a local ventilator superior power supply is located; the first power cut-off instrument 3 and the second power cut-off instrument 4 are used for controlling the low-voltage feed switch of the corresponding ventilator power supply in the substation where the upper-level power supply of the local ventilator is located to be switched off, so that the power failure of the local ventilator is realized.
Wherein, the first gas sensor 1 and the second gas sensor 2 are both methane sensors.
Wherein, the first gas sensor 1 and the second gas sensor 2 are both arranged in the range of 5m on the windward side of the local ventilator 10.
Wherein, the first outage appearance 3 and the second outage appearance 4 set up in the auxiliary ventilating fan 10 power distribution point.
The utility model relates to a gas sensor, outage appearance and safety monitoring substation are conventional equipment in the pit, and gas sensor is methane sensor, sets up in the 5m within range of the last wind side of ventilation blower 10 for the methane concentration in the gas of response place position, and real-time gas concentration data transmission who responds to it sends the safety monitoring substation of its connection. The safety monitoring substation receives the gas concentration data of methane sensor transmission to judge, when judging that real-time gas concentration exceeds standard, sends the outage instruction to the outage appearance that its output is connected, and this outage appearance is connected the low pressure feed switch of local fan 10 in the electric substation simultaneously to be the ventilation blower 10 outage, thereby avoid the gas to pass through ventilation blower 10 diffusion, cause the gas to reveal, lead to poisoning or explosion.
Specifically, in practical applications, as shown in fig. 2, two methane sensors (WS 1 and WS2, respectively) are installed in front of the ventilator 10 and are disposed within 5m of the upstream side of the local ventilator, and two power cut-off devices (WB 1 and WB2, respectively) are additionally installed and are disposed at the power distribution point of the ventilator 10. According to the requirement of gas electric locking, when the WS1 reading reaches a power-off value, a signal is sent to the first safety monitoring substation 5, the first safety monitoring substation 5 sends a power-off signal to the WB1, the WB1 cuts off the power supply of the main local fan and locks the main local fan, and the power-off locking principle of the auxiliary local fan is the same as the power-off locking principle; according to the requirement of a fault locking function, when any one piece of equipment participating in control is not put into normal operation or fails, a corresponding loop power supply of the local ventilator is cut off and locked; when the concentration of methane in front of the fan is out of limit, readings of WS1 and WS2 of the two fans reach power-off values, and WB1 and WB2 cut off the low-voltage feed switch power supply of the local fans of the two loops and lock the local fans at the same time.
In the existing ventilator locking scheme, a methane sensor is arranged in front of a ventilator and is arranged in the range of 5m on the upstream side of a local ventilator, and a power failure instrument is additionally arranged and is arranged at a fan power distribution point. According to the requirements of gas electric locking, when the reading of the sensor reaches a power-off value or any one of the methane sensor, the power-off instrument and the monitoring substation is not put into normal operation, the power-off instrument cuts off the power supply of the two-loop local ventilator and locks the two-loop local ventilator. Compare in former series connection ventilation auxiliary ventilating fan shutting scheme, the utility model discloses under the prerequisite that satisfies system function requirement, greatly promoted the safety and stability nature of local ventilating fan shutting system in the pit.
Compared with the prior art, the locking device of the series local ventilator comprises a first gas sensor, a second gas sensor, a first power-off instrument, a second power-off instrument, a first safety monitoring substation and a second safety monitoring substation; the first gas sensor and the second gas sensor are respectively arranged at the front end of the local ventilator, and the first power failure instrument, the second power failure instrument, the first safety monitoring substation and the second safety monitoring substation are all arranged in a substation where a superior power supply of the local ventilator is located. The utility model discloses in, any one safety monitoring equipment relevant with control does not drop into normal operating, breaks down or before the fan methane sensor can not cut off and block two return circuits auxiliary ventilating fan power simultaneously and lead to unplanned unusual outage when taking place the mistake outage. The safety stability of the locking system of the underground local ventilator is greatly improved while the functional requirements of the safety monitoring system are met.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (4)
1. A tandem ventilator lockout device comprising: the system comprises a first gas sensor, a second gas sensor, a first power-off instrument, a second power-off instrument, a first safety monitoring substation and a second safety monitoring substation; the system comprises a local ventilator, a first gas sensor, a second gas sensor, a first power-off instrument, a second power-off instrument, a first safety monitoring substation and a second safety monitoring substation, wherein the first gas sensor and the second gas sensor are respectively arranged at the front end of the local ventilator;
the system comprises a first gas sensor, a second gas sensor, a first power-off instrument, a local ventilator upper-level power supply and a low-voltage feed switch, wherein the first gas sensor is connected to the input end of a first safety monitoring substation, the second gas sensor is connected to the input end of a second safety monitoring substation, one end of the first power-off instrument is connected to the output end of the first safety monitoring substation, and the other end of the first power-off instrument is connected to the low-voltage feed switch of the corresponding ventilator power supply in; one end of the second outage instrument is connected to the output end of the second safety monitoring substation, and the other end of the second outage instrument is connected with a low-voltage feed switch of a corresponding ventilator power supply in a substation where the upper-level power supply of the local ventilator is located; and the first power cut-off instrument and the second power cut-off instrument realize the power failure of the local ventilator by controlling the disconnection of a low-voltage feed switch of a corresponding ventilator power supply in a substation where the superior power supply of the local ventilator is positioned.
2. The in-line local ventilator lockout device of claim 1 wherein the first and second gas sensors are each methane sensors.
3. The in-line ventilator lockout device of claim 1 wherein the first and second gas sensors are each disposed within 5m of an upwind side of the ventilator.
4. The in-line ventilator lockout device of claim 1 wherein the first and second power disconnects are disposed at the ventilator power distribution point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022458760.0U CN214007195U (en) | 2020-10-30 | 2020-10-30 | Series local ventilator locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022458760.0U CN214007195U (en) | 2020-10-30 | 2020-10-30 | Series local ventilator locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214007195U true CN214007195U (en) | 2021-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022458760.0U Active CN214007195U (en) | 2020-10-30 | 2020-10-30 | Series local ventilator locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214007195U (en) |
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2020
- 2020-10-30 CN CN202022458760.0U patent/CN214007195U/en active Active
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