CN210317377U - Switching device of underground local ventilator of coal mine - Google Patents
Switching device of underground local ventilator of coal mine Download PDFInfo
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- CN210317377U CN210317377U CN201921270565.6U CN201921270565U CN210317377U CN 210317377 U CN210317377 U CN 210317377U CN 201921270565 U CN201921270565 U CN 201921270565U CN 210317377 U CN210317377 U CN 210317377U
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- starter
- relay
- local ventilator
- special
- fan
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Abstract
The utility model relates to a colliery is switching device of auxiliary ventilating fan in pit belongs to the colliery and leads to and prevent electromechanical technical field. The technical scheme is as follows: the rectifier comprises a relay, a capacitor, a rectifier bridge, a voltage stabilizing module, a diode and the like; the input end (13) is connected with a normally open auxiliary contact (24) of a special local ventilator starter (17); the output end (14) is connected with a remote starting terminal (25) of the standby local ventilator starter (18) after being sequentially connected by a normally open contact (102) of the first relay and a normally closed contact (121) of the third relay. The utility model has the advantages that: the special local fan starter is matched with the spare local fan starter, the switching between the special fan and the spare fan is realized, the problems of automatic starting and the like after the power of the special fan and the spare fan is cut off simultaneously and the spare fan is powered on are solved, potential safety hazards are avoided, and the safety production of a coal mine is effectively guaranteed.
Description
Technical Field
The utility model relates to a colliery is switching device of auxiliary ventilating fan in pit belongs to the colliery and leads to and prevent electromechanical technical field.
Background
The local ventilator is a mode commonly adopted by local ventilation in a coal mine, and according to the regulation of coal mine safety regulations, all mine local ventilators except a low-gas mine need to realize double fans and double power supplies, a set of special fans operating for a long time, and a set of standby fans, so that the automatic starting of the standby fans is realized when the special fans are powered off or stop operating due to faults. When the special local ventilator and the spare local ventilator starter are powered on again, the special local ventilator and the spare local ventilator cannot be automatically started. Although the existing local ventilator starters (including a special local ventilator starter and a standby local ventilator starter with the same structure and function) can realize the functions, most of the existing local ventilator starters are in a single-chip microcomputer control mode, not only are the local ventilator starters expensive in manufacturing cost and difficult to repair after being damaged (the local ventilator starters are difficult to repair by coal mine enterprises), but also the existing local ventilator starters mostly do not have switching functions and cannot realize switching.
Disclosure of Invention
The utility model aims at providing a colliery is auxiliary ventilating fan's auto-change over device in pit, by the relay, electric capacity, the rectifier bridge, voltage stabilizing module and diode etc. are constituteed, not only the cost is cheap and the maintenance is convenient, and the device is small and exquisite, simple to operate, install in auxiliary ventilating fan starter, with auxiliary ventilating fan starter cooperation, realize special fan and standby fan's switching, and solved special fan and standby fan and have a power failure the back simultaneously, the automatic start scheduling problem after the standby fan comes the electricity, eliminate hidden danger, effectively ensure the safety in colliery, solve the above-mentioned problem that exists among the background art.
The technical scheme of the utility model is that: a switching device of a coal mine underground local ventilator comprises a fuse, a rectifier bridge, a light emitting diode, a diode II, a diode III, a resistor, a capacitor I, a capacitor II, a capacitor III, a relay I, a relay II, a relay III, a normally open contact of the relay II, a normally open contact of the relay I, a normally closed contact of the relay III, an input end, an output end, a power end and a voltage stabilizer, wherein the power end, the fuse, the rectifier bridge, the light emitting diode, the resistor, the capacitor I, the capacitor II, the diode II and the voltage stabilizer are sequentially connected to form a 12V direct current power circuit, and the power end is connected with a power supply inside a special local ventilator starter or a standby local; the relay I and the capacitor III are connected in parallel and then are connected in series with a normally open contact of the relay II to form a delay release circuit; a normally open contact of the relay I and a normally closed contact of the relay III are connected to form a standby fan control link; the second relay, the third relay and the third diode are connected in parallel and then connected with the input end to form a special fan control link, the standby fan control link and the special fan control link are connected in parallel to form a fan control link, and the 12V direct-current power supply circuit and the fan control link are connected in parallel; the voltage stabilizer is arranged between the first capacitor and the second capacitor; the input end is connected with a normally open auxiliary contact of the special local ventilator starter; the output end of the auxiliary local ventilator starter is connected with a remote starting terminal of the spare local ventilator starter;
the special local ventilator starter is connected with a special local ventilator starter power supply, and the standby local ventilator starter is connected with a standby local ventilator starter power supply; the special local ventilator starter is connected with the special fan, and the standby local ventilator starter is connected with the standby fan.
The voltage stabilizer is a commercially available product, and the integrated voltage stabilizing module with the model of 7812 inputs 15-35V of direct current voltage and outputs 12V of direct current voltage.
The power supply inside the special local ventilator starter or the standby local ventilator starter connected with the power supply end is a 15-35V power supply inside the special local ventilator starter or the standby local ventilator starter.
The utility model discloses the setting is between special auxiliary ventilating fan starter and reserve auxiliary ventilating fan starter, the utility model discloses a special auxiliary ventilating fan starter is connected to output and power end, and reserve auxiliary ventilating fan starter is connected to the output.
The special local ventilator starter and the standby local ventilator starter are starters with the same structure and function, are all commercial products, are mine explosion-proof and safe intrinsic starters commonly used in coal mine systems, and are known in the prior art. A normally open auxiliary contact is arranged on the special local fan starter and is used for monitoring whether the fan operates or not; the standby local ventilator starter is provided with a remote starting terminal for controlling the standby fan; the technical contents are all common general knowledge in the field.
The utility model has the advantages that: the device is small and exquisite and convenient to install, is matched with an existing special local ventilator starter and a standby local ventilator starter, realizes switching between the special fan and the standby fan, solves the problems of automatic starting and the like of the special fan and the standby fan after power failure simultaneously, avoids potential safety hazards and effectively ensures safety production of coal mines. The utility model discloses only need ten devices such as three relay, three electric capacity and rectifier bridge to constitute, not only the cost is cheap but also the maintenance is repaired conveniently, satisfies safety in production and the requirement of "coal mine safety regulation".
Drawings
FIG. 1 is a circuit diagram of the present invention;
FIG. 2 is a diagram of the field electrical connection of the present invention;
in the figure: the remote starting circuit comprises a fuse 1, a rectifier bridge 2, a light emitting diode 3, a diode II 4, a diode III 5, a resistor 6, a capacitor I7, a capacitor II 8, a capacitor III 9, a relay I10, a relay II 11, a relay III 12, a normally open contact 112 of the relay II, a normally open contact 102 of the relay I, a normally closed contact 121 of the relay III, an input end 13, an output end 14, a power supply end 15, a voltage stabilizer 16, a special local ventilator starter 17, a spare local ventilator starter 18, a special local ventilator starter power supply 19, a special fan 20, a spare fan 21, a newly added device 22, a spare local ventilator starter power supply 23, a normally open auxiliary contact 24 and a remote starting terminal 25.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
A switching device of a local ventilator under a coal mine well comprises a fuse 1, a rectifier bridge 2, a light emitting diode 3, a diode II 4, a diode III 5, a resistor 6, a capacitor I7, a capacitor II 8, a capacitor III 9, a relay I10, a relay II 11, a relay III 12, a normally open contact 112 of the relay II, a normally open contact 102 of the relay I, a normally closed contact 121 of the relay III, an input end 13, an output end 14, a power end 15 and a voltage stabilizer 16, wherein the power end 15, the fuse 1, the rectifier bridge 2, the light emitting diode 3, the resistor 6, the capacitor I7, the capacitor II 8, the diode II 4 and the voltage stabilizer 16 are sequentially connected to form a 12V direct current power circuit, and the power end 15 is connected with a power supply inside a special local ventilator starter 17 or a standby; the relay I10 and the capacitor III 9 are connected in parallel and then are connected in series with a normally open contact 112 of the relay II to form a delay release circuit; a normally open contact 102 of the relay I and a normally closed contact 121 of the relay III are connected to form a control link of the standby fan 21; the second relay 11, the third relay 12 and the third diode 5 are connected in parallel with each other and then connected with the input end 13 to form a special fan 20 control link, the standby fan control link and the special fan control link are connected in parallel with each other and then form a fan control link, and the 12V direct-current power supply circuit and the fan control link are connected in parallel with each other; the voltage stabilizer 16 is arranged between the first capacitor 7 and the second capacitor 8; the input end 13 is connected with a normally open auxiliary contact 24 of the special local ventilator starter 17; the output 14 is connected to the remote start terminal 25 of the spare ventilator starter 18.
The special local ventilator starter 17 is connected with a special local ventilator starter power supply 19, and the standby local ventilator starter 18 is connected with a standby local ventilator starter power supply 23; the special local ventilator starter 17 is connected to the special blower 20, and the standby local ventilator starter 18 is connected to the standby blower 21.
Insurance 1, rectifier bridge 2, emitting diode 3, diode two 4, diode three 5, resistance 6, electric capacity one 7, electric capacity two 8, electric capacity three 9, relay one 10, relay two 11, relay three 12, the normally open contact 112 of relay two, the normally open contact 102 of relay one, the normally closed contact 121 and the stabiliser 16 of relay three do the utility model discloses a newly-increased device 22, newly-increased device 22 all arrange special local fan starter 17 or reserve local fan starter 18's explosion-proof casing in, with the help of special local fan starter 17 or reserve local fan starter 18's explosion-proof casing in order to satisfy mining flame proof's requirement. The dedicated ventilator starter power supply 19 and the standby ventilator starter power supply 23 are independent power supplies that respectively provide power to the dedicated ventilator starter 17 and the standby ventilator starter 18.
The voltage stabilizer 16 is a commercially available product, and is an integrated voltage stabilizing module with a model of 7812, wherein the input direct-current voltage is 15-35V, and the output direct-current voltage is 12V.
The power supply inside the special local ventilator starter 17 or the standby local ventilator starter 18 connected with the power supply end 15 is a 15-35V power supply inside the special local ventilator starter 17 or the standby local ventilator starter 18.
The utility model discloses newly-increased device 22 sets up inside special auxiliary ventilator starter 17 or reserve auxiliary ventilator starter 18, the utility model discloses a newly-increased device 22 input 13 and power end 15 connect special auxiliary ventilator starter 17, and reserve auxiliary ventilator starter 18 is connected to output 14.
The special local ventilator starter 17 and the standby local ventilator starter 18 are starters with the same structure and function, are all commercial products, are mine explosion-proof and safe intrinsic starters commonly used in coal mine systems, and are known in the prior art. The special local ventilator starter 17 is provided with a normally open auxiliary contact 24 for monitoring whether the fan operates; the standby local ventilator starter 18 is provided with a remote start terminal 25 for controlling the standby ventilator; the technical contents are all common general knowledge in the field.
In the embodiment, a QJZ-80/660(380) (A) "mining explosion-proof and intrinsically safe vacuum electromagnetic starter" manufactured by Nanjing Shuangjing electric appliances group, Inc. is used as the special local ventilator starter 17 and the spare local ventilator starter 18.
The special local ventilator starter and the spare local ventilator starter have both a manual starting function (near control) and an automatic control starting function (remote control), but the special local ventilator starter only uses the manual starting function (near control), and the spare local ventilator starter uses the manual starting function (near control) and the automatic control starting function (remote control).
The input terminal 13 is connected to a normally open auxiliary contact 24 of the special ventilator starter 17, the normally open auxiliary contact 24 of the special ventilator starter 17 being in an open state when the special ventilator 20 is not started, and the normally open auxiliary contact 24 of the special ventilator starter 17 being closed when the special ventilator 20 is started.
The output 14 is connected to a remote start terminal 25 of the standby ventilator starter 18, the standby ventilator starter 18 controls the standby blower 21 to start when the remote start terminal 25 of the standby ventilator starter 18 is shorted, and the standby blower 21 cannot be controlled to remotely start when the remote start terminal 25 is not shorted.
In the embodiment, the power supply end 15 is connected with a 15-35V power supply inside the special local ventilator starter 17. It is in fact possible to have the power supply connected to the internal power supply of either the dedicated local fan starter 17 or the backup local fan starter 18.
When the special local ventilator starter 17 and the standby local ventilator starter 18 are powered off at the same time, the special fan 20 and the standby fan 21 stop running at the same time, and the air supply of the tunneling working face stops; when the special local ventilator starter 17 and the standby local ventilator starter 18 are powered on again, because the special ventilator is not started, the normally-open auxiliary contact 24 of the special local ventilator starter 17 is in an open state, namely the input end 13 is disconnected, the relay II 11 and the relay III 12 are not attracted, the normally-open contact 112 of the relay II is opened, the normally-closed contact 121 of the relay III is attracted, the relay I10 is not attracted, the normally-open contact 102 of the relay I is opened, the output end 14 is not conducted, the remote starting terminal 25 of the standby local ventilator starter 18 is not short-circuited, the standby local ventilator is not started, and the hidden danger of wind blowing on the wind stopping working face is avoided (the wind blowing is prohibited by the Ming dynasty of safety regulations).
When the dedicated ventilator starter 17 and the standby ventilator starter 18 are simultaneously energized, the normally open auxiliary contact 24 of the dedicated ventilator starter 17 is closed if the dedicated blower 20 is operating normally. The input end 13 is connected, the relay II 11 and the relay III 12 are attracted, the normally open contact 112 of the relay II is attracted, the normally closed contact 121 of the relay III is opened, the relay I10 is attracted, the normally open contact 102 of the relay I is attracted, the output end 14 is not connected, the remote starting terminal 25 of the standby local ventilator starter 18 is not short-circuited, and the standby fan 21 is not controlled to be remotely started.
When the special local ventilator starter 17 and the standby local ventilator starter 18 are powered simultaneously, if the normal operation of the special local ventilator 20 stops due to the fault of the special local ventilator 20 or the power failure of the special local ventilator starter 17, the input end 13 is disconnected, the second relay 11 and the third relay 12 are released, the normally open contact 112 of the second relay is released, the normally closed contact 121 of the third relay is attracted, the third capacitor 9 is discharged, the first relay 10 is released in a delayed manner, the normally open contact 102 of the first relay is attracted for 5-10 seconds in a delayed manner, namely, the output end 14 is conducted for 5-10 seconds, so that the remote starting terminal 25 of the standby local ventilator starter 18 is short-circuited for 5-10 seconds, the standby ventilator is started, and the automatic switching function of the local ventilator is.
Claims (4)
1. A switching device of a local ventilator in a coal mine well is characterized in that: comprises a fuse (1), a rectifier bridge (2), a light-emitting diode (3), a diode II (4), a diode III (5), a resistor (6), a capacitor I (7), a capacitor II (8), a capacitor III (9), a relay I (10), a relay II (11), a relay III (12), a normally open contact (112) of the relay II, a normally open contact (102) of the relay I, a normally closed contact (121) of the relay III, an input end (13), an output end (14), a power supply end (15) and a voltage stabilizer (16), the power supply end (15), the fuse (1), the rectifier bridge (2), the light-emitting diode (3), the resistor (6), the first capacitor (7), the second capacitor (8), the second diode (4) and the voltage stabilizer (16) are sequentially connected to form a 12-volt direct-current power supply circuit, and the power supply end (15) is connected with a power supply inside the special local ventilator starter (17) or the standby local ventilator starter (18); the relay I (10) and the capacitor III (9) are connected in parallel and then are connected in series with a normally open contact (112) of the relay II to form a delay release circuit; a normally open contact (102) of the relay I and a normally closed contact (121) of the relay III are connected to form a control link for the standby fan (21); the relay II (11), the relay III (12) and the diode III (5) are connected in parallel and then connected with the input end (13) to form a special fan (20) control link, the standby fan control link and the special fan control link are connected in parallel to form a fan control link, and the 12V direct-current power supply circuit and the fan control link are connected in parallel; the voltage stabilizer (16) is arranged between the first capacitor (7) and the second capacitor (8); the input end (13) is connected with a normally open auxiliary contact (24) of a special local ventilator starter (17); the output end (14) is connected with a remote starting terminal (25) of the spare local ventilator starter (18);
the special local ventilator starter (17) is connected with a special local ventilator starter power supply (19), and the standby local ventilator starter (18) is connected with a standby local ventilator starter power supply (23); the special local ventilator starter (17) is connected with the special fan (20), and the spare local ventilator starter (18) is connected with the spare fan (21).
2. The switching device of the underground coal mine local ventilator according to claim 1, characterized in that: the voltage stabilizer (16) is an integrated voltage stabilizing module, inputs 15-35V direct current voltage and outputs 12V direct current voltage.
3. The switching device of the underground coal mine local ventilator according to claim 1, characterized in that: the power supply inside the special local ventilator starter (17) or the standby local ventilator starter (18) connected with the power supply end (15) is a 15-35V power supply inside the special local ventilator starter (17) or the standby local ventilator starter (18).
4. The switching device of the underground coal mine local ventilator according to the claim 1 or 2, characterized in that: the novel high-voltage circuit breaker is characterized in that the fuse (1), the rectifier bridge (2), the light emitting diode (3), the diode II (4), the diode III (5), the resistor (6), the capacitor I (7), the capacitor II (8), the capacitor III (9), the relay I (10), the relay II (11), the relay III (12), a normally open contact (112) of the relay II, a normally open contact (102) of the relay I, a normally closed contact (121) of the relay III and the voltage stabilizer (16) are newly added devices (22), and the newly added devices (22) are all arranged in an explosion-proof shell of the special local ventilator starter (17) or the spare local ventilator starter (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921270565.6U CN210317377U (en) | 2019-08-07 | 2019-08-07 | Switching device of underground local ventilator of coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921270565.6U CN210317377U (en) | 2019-08-07 | 2019-08-07 | Switching device of underground local ventilator of coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317377U true CN210317377U (en) | 2020-04-14 |
Family
ID=70128730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921270565.6U Expired - Fee Related CN210317377U (en) | 2019-08-07 | 2019-08-07 | Switching device of underground local ventilator of coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210317377U (en) |
-
2019
- 2019-08-07 CN CN201921270565.6U patent/CN210317377U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 Termination date: 20210807 |