CN202301119U - Three-fan three-power-supply combination switch for mine local fan - Google Patents
Three-fan three-power-supply combination switch for mine local fan Download PDFInfo
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- CN202301119U CN202301119U CN201120368785XU CN201120368785U CN202301119U CN 202301119 U CN202301119 U CN 202301119U CN 201120368785X U CN201120368785X U CN 201120368785XU CN 201120368785 U CN201120368785 U CN 201120368785U CN 202301119 U CN202301119 U CN 202301119U
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- 239000007858 starting material Substances 0.000 claims abstract description 10
- 208000002925 dental caries Diseases 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 description 27
- 230000001070 adhesive effect Effects 0.000 description 27
- 238000009423 ventilation Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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Abstract
The utility model relates to a three-fan three-power-supply combination switch for a mine local fan, which is characterized in that a main fan, an auxiliary fan 1, an auxiliary fan 2 and three sets of starters are controlled to be arranged in three independent explosion-separation cavities in the same casing. The three sets of starters achieve linkage relation of interaction control among three sets of fans through an explosion-separation cavity wiring terminal. The three power supplies load the three sets of fans, normally one fan is used and two fans are standby, and the three sets of fans are controlled to achieve functions of automatic fan changing, linkage coordination, interlocking, wind power and gas power locking and the like, the three sets of fans are inserted into the same air drum to provide air for a working face, a problem that the air for the driving working face of a mine is easy to stop is solved, and simultaneously potential safety hazards existing during operation of a single fan are eliminated. Defects in the prior art are overcome, the problem that the air for the driving working face of the mine is easy to stop is solved, mine safety coefficient is further increased, and the three-fan three-power-supply combination switch can be widely applied to the driving working face of harmful gas of the mine.
Description
Technical field
The utility model relates to the multifunction combined switch of a kind of control mine three portable blowers, realizes functions such as the automatic switchover of three portable blowers, gas electric locking, is specially adapted to the mine coal dust, gas is prone to gather in the explosive hazard environment.
Background technique
Guaranteeing the uninterrupted air feed of driving face in coal mine, is the important measures that realize the coal mine evacuation working face safety in production, yet; The most of coal mine evacuation working faces of China adopt known pair of blower fan double-power source local fan ventilation system at present; According to investigation, use this ventilation system, driving face blowing-out rate is still higher; The driving face blowing-out is prone to cause harmful gases such as gas to gather transfinites; Finally lead to major accident, analysis and summary according to investigations, two blower fan double-power sourcies cause the working surface blowing-out that following some common reason is arranged:
1. unplanned jumping electricity in the arbitrary loop of portable blower double-power source or interruption maintenance certainly exist portable blower list fan operation, and its reliability of indubitable single circuit power supply is lower, is prone to cause the driving face blowing-out;
2. two blower fan twin-power switch are its relay normally open of the application of falling the machine, break contact normally, there is be prone to burn, wear out, jam, problem such as insensitive, cause the machine of can't realizing normally, cause the working surface blowing-out;
3. reasons such as mine condition difference power supply complicacy and higher level's voltage functuation cause that mine jumps electricity on a large scale, cause the portable blower double-power source to jump electricity simultaneously and still exist, and cause the long-time blowing-out of driving face undoubtedly;
4. two blower fans are that major and minor blower fan has one of which to break down, and because of there is control interlock contact each other in major and minor blower fan control switch, when handling failure, are easy to cause another blower fan in service out of service, cause the driving face blowing-out;
5. two normal major and minor blower fans of blower fan double-power source local fan ventilation control system must have one to locate with in service; Another is in charged stand-by state; Wherein arbitrary of maintenance, portable blower just are in the single loop operation, and its reliability of single loop operation is lower; Cause the local fan ventilation system to can not get reliable maintenance for a long time according to this reason of investigation, hide some dangers for for the portable blower safe operation undoubtedly.So utilize traditional two blower fan double-power source local fan ventilation modes, can not guarantee effectively that local fan is stable, reliable operation.
Summary of the invention
The technical problem that the utility model will solve is: design a kind of mine portable blower three blower fans three power supply packet type switches; To realize control three cover local fans; A normal usefulness two is equipped with, the control three cover blower fans functions such as coordinations, locking each other, wind-powered electricity generation, gas electric locking that realize changing planes automatically, linking, and three to overlap the blower fan fork-joins be the working surface air feed at an air duct; Solve coal mine evacuation working face and be prone to a blowing-out difficult problem, also will eliminate the potential safety hazard that single fan operation exists simultaneously.
The technological scheme that solution the utility model technical problem is adopted is: three cover starters of control main air blower, secondary blower fan one, secondary blower fan two place in three independent flame proof cavitys of same housing; Three cover starters realize that through flame proof cavity tenminal block three overlap the linkage relationship of mutual control between the blower fans, and its concrete scheme is: 1. often open auxiliary contact KM2-4 to the vacuum contactor on secondary blower fan one switch and be parallel on the start button of main air blower switch with connecting line; 2. be serially connected in the vacuum contactor normally closed auxiliary contact KM2-3 on secondary blower fan one switch on the time relay KT1 coil control circuit of main air blower switch; 3. often opening auxiliary contact KM1-4 to the vacuum contactor on the main air blower switch is parallel on the start button of secondary blower fan one switch with connecting line; 4. be serially connected in the vacuum contactor normally closed auxiliary contact KM1-3 on the main air blower switch on the time relay KT2 coil control circuit of secondary blower fan one switch; 5. be together in parallel auxiliary reclay on KA1-4, secondary blower fan one switch KA2-4 of often making war of often making war of the auxiliary reclay on the main air blower switch, be parallel to connecting line on the start button of secondary blower fan two switches; 6. be together in series auxiliary reclay on KA1-5, secondary blower fan one switch KA2-5 of often making war of often making war of the auxiliary reclay on the main air blower switch, be concatenated on the secondary blower fan relay K T3 two switching times coil control circuit with connecting line; Three cover blower fan fork-joins are the working surface air feed at an air duct.
The adhesive of secondary blower fan one starter vacuum contactor KM2 is by normally closed KM1-3 control of main air blower vacuum contactor; The adhesive of secondary blower fan two vacuum contactor KM3 is by auxiliary reclay KA1-5, the KA2-5 control of main air blower, secondary blower fan one; 9 is ground terminal, constitutes the control access.
The main air blower vacuum contactor separates, KM1-3 adhesive in secondary blower fan one control loop, time relay KT2 adhesive, KT2-1 adhesive; Secondary blower fan one contact-relay KM2 adhesive, secondary blower fan one starts operation, and after main air blower, secondary blower fan one had one of which to manually boot, secondary blower fan two just got into charged stand-by state; After main air blower, secondary blower fan a pair of stop, KA1-5, KA2-5 adhesive in secondary blower fan two control loops, time relay KT3 adhesive; KT3-1 often opens and becomes normally closed, the KM3 adhesive, and secondary blower fan two starts operation.
The good effect of the utility model is: (1) three power supply is from the different buses of working section sub station; High voltage supply system is reliable and stable, and wherein a ring current must satisfy " three is special " in " safety regulations in coal mine " (special switch, dedicated transformer, PL Private Lines) requirement; (2) three portable blower fork-joins are practiced thrift cost and lane space at an air duct working surface, reach safety, reliable, stablizing effect again; (3) realize that through chain contact between three portable blowers three portable blowers automatically switch, and its control has certain priority, interlocked control, three cover blower fans does not exist simultaneously open, operation simultaneously, in case wipe out air duct; (4) can realize at any time arbitrary portable blower being overhauled, and can guarantee the using and the reserved state, not have single blower fan running during maintenance, the Yin Xuduo reason causes the arbitrary loop of portable blower to jump electricity simultaneously, and its portable blower does not exist single blower fan to turn round yet, and has eliminated the hidden danger of single blower fan running; ⑸ be four times of tradition " two blower fan double-power source " according to probability calculation the utility model reliability.
Description of drawings
Embodiment
Three cover starters 1,2,3 like accompanying drawing 1 control main air blower, secondary blower fan one, secondary blower fan two place in three independent flame proof cavitys of same housing 7, and three overlap the linkage relationship of starters 1,2,3 through controlling each other between the flame proof cavity tenminal block realization three cover blower fans.
Shown in accompanying drawing 2,1. often open the vacuum contactor on the switch of secondary blower fan 1 on auxiliary contact KM2-4 is parallel to main air blower 4 with connecting line the start button ST1 of switch; 2. be serially connected in the vacuum contactor normally closed auxiliary contact KM2-3 on the switch of secondary blower fan 1 on the time relay KT1 coil control circuit of switch of main air blower 4; 3. often open the vacuum contactor on the switch of main air blower 4 on auxiliary contact KM1-4 is parallel to secondary blower fan 1 with connecting line the start button ST2 of switch; 4. be serially connected in the vacuum contactor normally closed auxiliary contact KM1-3 on the switch of main air blower 4 on the time relay KT2 coil control circuit of switch of secondary blower fan 1; 5. be together in parallel auxiliary reclay on the switch of KA1-4, secondary blower fan 1 KA2-4 of often making war of often making war of the auxiliary reclay on the switch of main air blower 4, be parallel to connecting line on the start button ST3 of switch of secondary blower fan 26; 6. be together in series auxiliary reclay on the switch of KA1-5, secondary blower fan 1 KA2-5 of often making war of often making war of the auxiliary reclay on the switch of main air blower 4, the switching time that is concatenated into secondary blower fan 26 with connecting line is on the relay K T3 coil control circuit.Is the working surface air feed with three cover blower fans, 4,5,6 fork-joins on an air duct 8.
The adhesive of secondary blower fan one 5 starter vacuum contactor KM2 is by normally closed KM1-3 control of the vacuum contactor of main air blower 4; The adhesive of the vacuum contactor KM3 of secondary blower fan 26 is by auxiliary reclay KA1-5, the KA2-5 control of main air blower 4, secondary blower fan 1; 9 is ground terminal, constitutes the control access.
To isolate reverser QS1 handgrip and get to the forward or reverse position, control transformer gets electric, and comprehensive protector of motor detection line, motor do not have electric leakage; BD1 is closed, by forming the loop behind the start button ST1, auxiliary reclay KA1 adhesive; Its KA1-1 closed self-insurance of often making war, KA1-2 often opens and becomes normally closed, and rectifier bridge gets; Time relay KT1 adhesive, KT1-1 often opens and becomes the normally closed contactor closure, and main air blower 4 starts; This moment secondary blower fan 1, secondary blower fan 26 control loop auxiliary reclay KA2, KA3 adhesive, its normal opened contact KA2-1, the self-insurance of KA3-1 adhesive control loop, its time relay breaks off carries out charged stand-by state.
Three blower fans fall machine and mutual locking principle each other: main air blower 4, secondary blower fan 1, secondary blower fan 26 can the unlatchings of choosing at random property, but have mutual blocking function therebetween, do not have the possibility of opening two typhoon machines simultaneously; Control three cover blower fans have certain priority, and normal main air blower 4, secondary blower fan 1 are selected the one of which operation, relay tip KA1-4 or KA2-4 adhesive in secondary blower fan 26 control loops in operation back; Auxiliary reclay KA3 adhesive, its KA3-1 normal opened contact become closed, satisfy the control loop self-insurance; No matter any one of main air blower 4, one 5 operations of secondary blower fan this moment, the relay K A3 in the secondary blower fan 26 is in attracting state, and secondary blower fan 26 gets into charged stand-by state; In case main air blower 4, secondary the blower fan 1 normally machine of falling cause main air blower 4, one 5 pairs of secondary blower fans to stop, relay normally open contact KA1-5, the KA2-5 adhesive in secondary blower fan 26 control loops at this moment, time relay KT3 time-delay (adjustable) back adhesive; Its normal opened contact KT3-1 is closed; Vacuum contactor KM3 adhesive, secondary blower fan 26 is opened operation, has avoided the working surface blowing-out; After stopping, main air blower 4, one 5 pairs of secondary blower fans can realize cutting off automatically the working surface electrical source of power; Informing that the working surface electrician handles causes main air blower 4, secondary blower fan 1 machine halt trouble simultaneously, after fault treatment is confirmed, can directly open in main air blower 4, the secondary blower fan 1 any one; After the unlatching, secondary blower fan 26 autostops.
The utility model is used in reality more than 2 years, does not occur working surface blowing-out phenomenon so far, and this novel local fan ventilation system of practical application proof has reached reliable more, stable, safe effect, efficiently solves driving face and is prone to a blowing-out difficult problem.
Claims (1)
1. mine portable blower three blower fans three power supply packet type switches; It is characterized in that: three cover starters of control main air blower, secondary blower fan one, secondary blower fan two place in three independent flame proof cavitys of same housing; Three cover starters realize that through flame proof cavity tenminal block three overlap the linkage relationship of mutual control between the blower fans, and three cover blower fan fork-joins are the working surface air feed at an air duct; Its concrete scheme is: 1. often open auxiliary contact KM2-4 to the vacuum contactor on secondary blower fan one switch and be parallel on the start button of main air blower switch with connecting line; 2. be serially connected in the vacuum contactor normally closed auxiliary contact KM2-3 on secondary blower fan one switch on the time relay KT1 coil control circuit of main air blower switch; 3. often opening auxiliary contact KM1-4 to the vacuum contactor on the main air blower switch is parallel on the start button of secondary blower fan one switch with connecting line; 4. be serially connected in the vacuum contactor normally closed auxiliary contact KM1-3 on the main air blower switch on the time relay KT2 coil control circuit of secondary blower fan one switch; 5. be together in parallel auxiliary reclay on KA1-4, secondary blower fan one switch KA2-4 of often making war of often making war of the auxiliary reclay on the main air blower switch, be parallel to connecting line on the start button of secondary blower fan two switches; 6. be together in series auxiliary reclay on KA1-5, secondary blower fan one switch KA2-5 of often making war of often making war of the auxiliary reclay on the main air blower switch, be concatenated on the secondary blower fan relay K T3 two switching times coil control circuit with connecting line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120368785XU CN202301119U (en) | 2011-09-30 | 2011-09-30 | Three-fan three-power-supply combination switch for mine local fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120368785XU CN202301119U (en) | 2011-09-30 | 2011-09-30 | Three-fan three-power-supply combination switch for mine local fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301119U true CN202301119U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120368785XU Expired - Fee Related CN202301119U (en) | 2011-09-30 | 2011-09-30 | Three-fan three-power-supply combination switch for mine local fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202301119U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248278A (en) * | 2013-05-22 | 2013-08-14 | 王博 | Adjustable selector switch of local fans of main unit and standby unit for mine |
| CN105350997A (en) * | 2015-12-16 | 2016-02-24 | 永贵能源开发有限责任公司新田煤矿 | Device with three fans and three power sources |
| CN110130967A (en) * | 2019-03-26 | 2019-08-16 | 淮北矿业股份有限公司 | A kind of booster safeguards technique prevents gas exceeding limit device and method |
-
2011
- 2011-09-30 CN CN201120368785XU patent/CN202301119U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248278A (en) * | 2013-05-22 | 2013-08-14 | 王博 | Adjustable selector switch of local fans of main unit and standby unit for mine |
| CN105350997A (en) * | 2015-12-16 | 2016-02-24 | 永贵能源开发有限责任公司新田煤矿 | Device with three fans and three power sources |
| CN110130967A (en) * | 2019-03-26 | 2019-08-16 | 淮北矿业股份有限公司 | A kind of booster safeguards technique prevents gas exceeding limit device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20120930 |