CN103414241A - Automatic switching power supply circuit used in underground coal mine - Google Patents

Automatic switching power supply circuit used in underground coal mine Download PDF

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Publication number
CN103414241A
CN103414241A CN2013103665854A CN201310366585A CN103414241A CN 103414241 A CN103414241 A CN 103414241A CN 2013103665854 A CN2013103665854 A CN 2013103665854A CN 201310366585 A CN201310366585 A CN 201310366585A CN 103414241 A CN103414241 A CN 103414241A
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CN
China
Prior art keywords
power supply
phase
contactor
electrically
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2013103665854A
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Chinese (zh)
Inventor
柏永青
马淑仙
曹彦林
李晓华
陈利平
赵改兰
汤继胜
高晓明
邵莉莉
陈荣海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANXI FENXI MACHINERY CO Ltd
Original Assignee
SHANXI FENXI MACHINERY CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANXI FENXI MACHINERY CO Ltd filed Critical SHANXI FENXI MACHINERY CO Ltd
Priority to CN2013103665854A priority Critical patent/CN103414241A/en
Publication of CN103414241A publication Critical patent/CN103414241A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an automatic switching power supply circuit used in an underground coal mine. The automatic switching power supply circuit solves the problem that misoperation is easily caused when an existing underground double-power-supply circuit switches. The automatic switching power supply circuit is characterized in that a three-phase frequently-used power source (1) is electrically connected with a load (8) through a main contactor, a three-phase standby power source (10) is electrically connected with the load (8) through a standby contactor, a coil (2) of a relay is connected between a C-phase power source and an A-phase power source of the three-phase frequently-used power source (1) in parallel, a normally open auxiliary contact (3) of the relay, a normally closed contact (4) of the standby contactor and a coil (5) of the main contactor are connected in series to be connected between a B-phase power source and the C-phase power source of the three-phase frequently-used power source (1) in parallel, and a normally closed auxiliary contact (11) of the relay, a normally closed contact (12) of the main contactor and a coil (13) of the standby contactor are connected in series to be connected between a B-phase power source and a C-phase power source of the three-phase standby power source (10) in parallel. Automatic and reliable switching between two circuits of underground power sources is achieved.

Description

Underground mine use automatic switching power supply circuits
Technical field
The present invention relates to a kind of mine lighting circuit, particularly the three phase supply circuit of the dual-power automatic switching of a kind of colliery mine lighting and control use.
Background technology
In down-hole, the power-supply device that the illumination that chamber, working face, Control Room, intelligent console etc. are located to use and control circuit are two platform independent, one is power supply commonly used, one is stand-by power supply.When three phase network spread of voltage or fault appear in power supply commonly used, need manually these equipment access to stand-by power supply, in the meantime, illumination, control appliance shut down, to down-hole, bring complete confusion, especially break down while having a power failure in Control Room or intelligent console, and all states in down-hole, all by out of hand, easily cause the downhole safety accident.There is potential safety hazard in the manual switching power supply, and particularly the misoperation meeting of switching causes damage to underground equipment, and the situation of especially when misoperation, the two-way power supply being powered simultaneously is very serious to the infringement of down-hole power consumption equipment.
Summary of the invention
The invention provides a kind of underground mine use automatic switching power supply circuits, the down-hole power failure brought while having solved the manual switching of dual power supply under the existing well and misoperation and cause the technical problem of security incident.
The present invention solves above technical problem by the following technical programs:
A kind of underground mine use automatic switching power supply circuits, comprise that three-phase commonly uses power supply, three-phase stand-by power supply and load, three-phase power supply commonly used is electrically connected to an end of the main contact of main contactor, the other end of the main contact of main contactor is electrically connected to the outlet binding post, the three-phase stand-by power supply is electrically connected to an end of the main contact of standby contactor, the other end of the main contact of standby contactor is electrically connected to the outlet binding post, on the outlet binding post, be connected with load, one end of the coil of relay is electrically connected to the C phase power supply of three-phase power supply commonly used, the other end of the coil of relay is electrically connected to the A phase power supply of three-phase power supply commonly used, an end of often driving auxiliary contact of relay is electrically connected to the C phase power supply of three-phase power supply commonly used, the other end of often driving auxiliary contact of relay is electrically connected to an end of the normally-closed contact of standby contactor, the other end of the normally-closed contact of standby contactor is electrically connected to an end of the coil of main contactor, the other end of the coil of main contactor is electrically connected to the B phase power supply of three-phase power supply commonly used, one end of the normally closed auxiliary contact of relay is electrically connected to the C phase power supply of three-phase stand-by power supply, the other end of the normally closed auxiliary contact of relay is electrically connected to an end of the normally-closed contact of main contactor, the other end of the normally-closed contact of main contactor is electrically connected to an end of the coil of standby contactor, the other end of the coil of standby contactor is electrically connected to the B phase power supply of three-phase stand-by power supply.
Between the coil of the C phase power supply of three-phase power supply commonly used and relay, be in series with the first fuse, between the coil of the A phase power supply of three-phase power supply commonly used and relay, be in series with the second fuse, C phase power supply and often opening between auxiliary contact of relay at three-phase power supply commonly used are in series with the 3rd fuse, between the coil of the B phase power supply of three-phase power supply commonly used and main contactor, be in series with the 4th fuse, between the normally closed auxiliary contact of the C of three-phase stand-by power supply phase power supply and relay, be in series with the 5th fuse, between the B phase power supply of three-phase stand-by power supply and the coil of standby contactor, be in series with the 6th fuse.
The present invention is by a relay and the contact of two small-size contactors and the combination of control coil, realized the mutual automatic switchover between the two-way power supply of down-hole, and guaranteed reliably in the two-way power supply to only have a road power supply, thereby guarantee the reliability service of underground mine use electricity equipment.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing:
A kind of underground mine use automatic switching power supply circuits, comprise that three-phase commonly uses power supply 1, three-phase stand-by power supply 10 and load 8, three-phase power supply 1 commonly used is electrically connected to an end of the main contact 6 of main contactor, the other end of the main contact 6 of main contactor is electrically connected to outlet binding post 7, three-phase stand-by power supply 10 is electrically connected to an end of the main contact 9 of standby contactor, the other end of the main contact 9 of standby contactor is electrically connected to outlet binding post 7, on outlet binding post 7, be connected with load 8, one end of the coil 2 of relay is electrically connected to the C phase power supply of three-phase power supply 1 commonly used, the other end of the coil 2 of relay is electrically connected to the A phase power supply of three-phase power supply 1 commonly used, an end of often driving auxiliary contact 3 of relay is electrically connected to the C phase power supply of three-phase power supply 1 commonly used, the other end of often driving auxiliary contact 3 of relay is electrically connected to an end of the normally-closed contact 4 of standby contactor, the other end of the normally-closed contact 4 of standby contactor is electrically connected to an end of the coil 5 of main contactor, the other end of the coil 5 of main contactor is electrically connected to the B phase power supply of three-phase power supply 1 commonly used, one end of the normally closed auxiliary contact 11 of relay is electrically connected to the C phase power supply of three-phase stand-by power supply 10, the other end of the normally closed auxiliary contact 11 of relay is electrically connected to an end of the normally-closed contact 12 of main contactor, the other end of the normally-closed contact 12 of main contactor is electrically connected to an end of the coil 13 of standby contactor, the other end of the coil 13 of standby contactor is electrically connected to the B phase power supply of three-phase stand-by power supply 10.
When three-phase power supply 1 normal power supply commonly used, the coil 2 of relay obtains electric, make the auxiliary contact 3 of often opening of relay be in closure state, the normally closed auxiliary contact 11 of relay is in off-state, cause the coil 13 of standby contactor to be in power failure state, make the normally-closed contact 4 of standby contactor be in normally off, make the coil 5 of main contactor obtain electric, the coil 5 of main contactor obtains electric main contact 6 adhesives that will make the main contactor of its control, simultaneously, because the coil 13 of standby contactor is in power failure state, make the main contact 9 of standby contactor be in off-state, at this moment load 8 is under the power supply state of three-phase power supply 1 commonly used.
When three-phase power supply 1 commonly used is stopped power supply, coil 2 dead electricity of relay, make the auxiliary contact 3 of often opening of relay be in normally open, the normally closed auxiliary contact 11 of relay is in normally off, cause the coil 5 of main contactor to be in power failure state, the coil 5 of main contactor is in power failure state, directly cause the main contact 6 of main contactor to cut-off with the normally-closed contact 12 of main contactor and be in closure state, at this moment the coil 13 of standby contactor is in to obtain electricity condition, make main contact 9 adhesives of standby contactor, at this moment load 8 is under the power supply state of three-phase stand-by power supply 10.
When three-phase power supply 1 commonly used and three-phase stand-by power supply 10 are powered simultaneously, the coil 2 of relay obtains electric, make the auxiliary contact 3 of often opening of relay be in closure state, the normally closed auxiliary contact 11 of relay is in open mode, cause the coil 13 of standby contactor to be in power failure state, make the normally-closed contact 4 of standby contactor be in closure state, make the coil 5 of main contactor be in to obtain electricity condition, directly cause main contact 6 adhesives of main contactor and main contact 9 off-states of standby contactor, guaranteed that reliably three-phase power supply 1 commonly used and three-phase stand-by power supply 10 can not be load 8 power supplies simultaneously.
Between the coil 2 of the C phase power supply of three-phase power supply 1 commonly used and relay, be in series with the first fuse FU1, between the coil 2 of the A phase power supply of three-phase power supply 1 commonly used and relay, be in series with the second fuse FU2, C phase power supply and often opening between auxiliary contact 3 of relay at three-phase power supply 1 commonly used are in series with the 3rd fuse FU3, between the coil 5 of the B phase power supply of three-phase power supply 1 commonly used and main contactor, be in series with the 4th fuse FU4, between the normally closed auxiliary contact 11 of the C of three-phase stand-by power supply 10 phase power supply and relay, be in series with the 5th fuse FU5, between the B phase power supply of three-phase stand-by power supply 10 and the coil 13 of standby contactor, be in series with the 6th fuse FU6, guaranteed the overcurrent safety in each loop.

Claims (2)

1. underground mine use automatic switching power supply circuits, comprise that three-phase commonly uses power supply (1), three-phase stand-by power supply (10) and load (8), it is characterized in that, three-phase is commonly used power supply (1) and is electrically connected to an end of the main contact (6) of main contactor, the other end of the main contact of main contactor (6) is electrically connected to outlet binding post (7), three-phase stand-by power supply (10) is electrically connected to an end of the main contact (9) of standby contactor, the other end of the main contact of standby contactor (9) is electrically connected to outlet binding post (7), on outlet binding post (7), be connected with load (8), one end of the coil of relay (2) is electrically connected to the C phase power supply of three-phase power supply (1) commonly used, the other end of the coil of relay (2) is electrically connected to the A phase power supply of three-phase power supply (1) commonly used, an end of often driving auxiliary contact (3) of relay is electrically connected to the C phase power supply of three-phase power supply (1) commonly used, the other end of often driving auxiliary contact (3) of relay is electrically connected to an end of the normally-closed contact (4) of standby contactor, the other end of the normally-closed contact of standby contactor (4) is electrically connected to an end of the coil (5) of main contactor, the other end of the coil of main contactor (5) is electrically connected to the B phase power supply of three-phase power supply (1) commonly used, one end of the normally closed auxiliary contact of relay (11) is electrically connected to the C phase power supply of three-phase stand-by power supply (10), the other end of the normally closed auxiliary contact of relay (11) is electrically connected to an end of the normally-closed contact (12) of main contactor, the other end of the normally-closed contact of main contactor (12) is electrically connected to an end of the coil (13) of standby contactor, the other end of the coil of standby contactor (13) is electrically connected to the B phase power supply of three-phase stand-by power supply (10).
2. a kind of underground mine use automatic switching power supply circuits according to claim 1, it is characterized in that, between the coil (2) of the C phase power supply of three-phase power supply (1) commonly used and relay, be in series with the first fuse (FU1), between the coil (2) of the A phase power supply of three-phase power supply (1) commonly used and relay, be in series with the second fuse (FU2), C phase power supply and often opening between auxiliary contact (3) of relay at three-phase power supply (1) commonly used are in series with the 3rd fuse (FU3), between the coil (5) of the B phase power supply of three-phase power supply (1) commonly used and main contactor, be in series with the 4th fuse (FU4), between the normally closed auxiliary contact (11) of the C phase power supply of three-phase stand-by power supply (10) and relay, be in series with the 5th fuse (FU5), between the coil (13) of the B phase power supply of three-phase stand-by power supply (10) and standby contactor, be in series with the 6th fuse (FU6).
CN2013103665854A 2013-08-21 2013-08-21 Automatic switching power supply circuit used in underground coal mine Pending CN103414241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013103665854A CN103414241A (en) 2013-08-21 2013-08-21 Automatic switching power supply circuit used in underground coal mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013103665854A CN103414241A (en) 2013-08-21 2013-08-21 Automatic switching power supply circuit used in underground coal mine

Publications (1)

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CN103414241A true CN103414241A (en) 2013-11-27

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105958633A (en) * 2016-06-22 2016-09-21 中航太克(厦门)电力技术股份有限公司 Two-way power supply automatic switching power supply circuit
CN106059053A (en) * 2016-05-31 2016-10-26 广州地铁集团有限公司 Double-power-supply automatic switching device
CN109167427A (en) * 2018-08-28 2019-01-08 武汉船用机械有限责任公司 A kind of power supply system
CN111244916A (en) * 2020-03-08 2020-06-05 陕西航空电气有限责任公司 Hardware interlocking method for key alternating current contactor in aviation power distribution system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665495A (en) * 1970-06-01 1972-05-23 Power Systems And Controls Inc No break power system
CN2206512Y (en) * 1994-11-05 1995-08-30 黄忠益 Double power supply fully automatic switching device
CN2408613Y (en) * 1998-09-25 2000-11-29 蔡双喜 Double local leaf double power source automatic switching locking device
CN2874898Y (en) * 2006-02-23 2007-02-28 蔡军 Double power source switch device
CN203504276U (en) * 2013-08-21 2014-03-26 山西汾西机电有限公司 Coal-mine downhole automatic-switching power-supply circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665495A (en) * 1970-06-01 1972-05-23 Power Systems And Controls Inc No break power system
CN2206512Y (en) * 1994-11-05 1995-08-30 黄忠益 Double power supply fully automatic switching device
CN2408613Y (en) * 1998-09-25 2000-11-29 蔡双喜 Double local leaf double power source automatic switching locking device
CN2874898Y (en) * 2006-02-23 2007-02-28 蔡军 Double power source switch device
CN203504276U (en) * 2013-08-21 2014-03-26 山西汾西机电有限公司 Coal-mine downhole automatic-switching power-supply circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106059053A (en) * 2016-05-31 2016-10-26 广州地铁集团有限公司 Double-power-supply automatic switching device
CN105958633A (en) * 2016-06-22 2016-09-21 中航太克(厦门)电力技术股份有限公司 Two-way power supply automatic switching power supply circuit
CN109167427A (en) * 2018-08-28 2019-01-08 武汉船用机械有限责任公司 A kind of power supply system
CN111244916A (en) * 2020-03-08 2020-06-05 陕西航空电气有限责任公司 Hardware interlocking method for key alternating current contactor in aviation power distribution system

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Application publication date: 20131127