CN104660107A - Mining flame-proof and intrinsically safe double-contactor low-voltage alternating-current soft starter - Google Patents
Mining flame-proof and intrinsically safe double-contactor low-voltage alternating-current soft starter Download PDFInfo
- Publication number
- CN104660107A CN104660107A CN201310587819.8A CN201310587819A CN104660107A CN 104660107 A CN104660107 A CN 104660107A CN 201310587819 A CN201310587819 A CN 201310587819A CN 104660107 A CN104660107 A CN 104660107A
- Authority
- CN
- China
- Prior art keywords
- contactor
- isolation
- soft
- abc
- electric power
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a mining flame-proof and intrinsically safe double-contactor low-voltage alternating-current soft starter. The soft starter comprises an isolation changeover switch connected with a three-phase wire, wherein the isolation changeover switch is connected to the input ends of three groups of anti-parallel power thyristors; the output ends of the power thyristors are connected to three groups of load; bypass contactors are arranged at two ends of each power thyristor; isolation contactors are arranged between the output ends of the power thyristors and the three groups of load; the bypass contactors and the isolation contactors are connected with a secondary circuit by virtue of a soft start controller. Through adoption of the scheme, the soft starter has the characteristics that when a soft start switch stops for standby, the isolation contactors are switched off at the same time, the problem of induced voltage in the power thyristors and the load sides can be solved, the occurrence of the condition with damage to equipment and harm to staff caused because of damage to the power thyristors in the original soft start switch can be effectively avoided, and the safety coefficient of the low-voltage soft start switch used in coal mine wells is also increased.
Description
Technical field
The present invention relates to a kind of coal mine machinery equipment technical field, particularly relate to a kind of two contactor low voltage AC soft starting device of mine explosion-suppression and intrinsic safety matter safety-type being applied to underground coal mine.
Background technology
At present, be widely used in the mine flameproof and intrinsic safety type low-voltage alternating-current soft start of underground coal mine, its main power circuit structure is all combine with the bypass contactor at isolation reversing switch, electric power thyristor and cross-over connection and electric power thyristor two ends.But, because electric power thyristor belongs to semiconductor element, when disconnecting bypass contactor (when Soft Start Switch stops standby), the mains side of electric power thyristor still has electricity, which results in electric power thyristor under the effect of external electric field, still there is a small amount of free electron flowing, thus make electric power thyristor can not be in the state turned off completely, global switch is caused to still have electricity when mains side has electricity standby, load-side can sense equal or on the low side in the voltage of mains side too, although the energy of this induced voltage can not drive any load of load-side normally to work, but, but the useful life of electric power thyristor is reduced, simultaneously, also there is potential safety hazard in the maintenance in soft start switch later stage.
Summary of the invention
Object of the present invention is just to provide a kind of mine explosion-suppression and intrinsic safety matter safety-type two contactor low voltage AC soft starting device, short for useful life with the electric power thyristor solved existing for prior art, and to the security hidden trouble that soft start switch later period maintenance is brought.
For achieving the above object, the present invention is by the following technical solutions:
The present invention includes the isolation reversing switch that three-phase inlet wire is connected, isolation reversing switch is connected with the input of three groups of antiparallel electric power thyristors, and the output of electric power thyristor is connected with three groups of loads; Be provided with bypass contactor at electric power thyristor two ends, be provided with isolation contactor between the output of electric power thyristor and three groups of loads, bypass contactor is connected with secondary circuit by soft start controller with isolation contactor.
Described isolation contactor is CKJ5-400/1140 vacuum contactor.
Described isolation contactor is T5N 630 circuit breaker.
Described bypass contactor is CKJ5-400/1140 vacuum contactor.
Described electric power thyristor is KT9-1200/1500 controllable silicon.
Described soft start controller is MX soft initiator.
Compared with prior art, adopt the present invention of such scheme to have following characteristics: when soft start switch stop standby while isolation contactor disconnect, this not only solves the problem that electric power thyristor and load-side exist induced voltage, and effectively prevent in original soft switch because electric power thyristor damage and cause the generation to equipment, the unfavorable situation of personnel, meanwhile, the coefficient of safety of low pressure Soft Start Switch in underground coal mine uses is also improved.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present invention.
Embodiment
Shown in accompanying drawing, the present invention includes three-phase inlet wire R, S, the isolation reversing switch GHK that T-phase connects, be connected from reversing switch GHK with the input of three groups of antiparallel electric power thyristor SCR, the output of electric power thyristor SCR and three groups of load D1, D2, D3 are connected; Bypass contactor KM2-abc is provided with at electric power thyristor SCR two ends, the output of electric power thyristor SCR and three groups of load D1, be provided with isolation contactor KM1-abc between D2, D3, bypass contactor KM2-abc is connected with secondary circuit by soft start controller ZB with isolation contactor KM1-abc; Isolation contactor is T5N 630 circuit breaker, and electric power thyristor SCR is KT9-1200/1500 controllable silicon, and soft start controller ZB is MX soft initiator.
As improvement of the present invention: isolation contactor KM1-abc and bypass contactor KM2-abc all can be CKJ5-400/1140 vacuum contactor, compared with other vacuum contactor, CKJ5-400/1140 vacuum contactor has the advantages such as volume is little, lightweight, the life-span is long; Isolation contactor KM1-abc also can be T5N 630 circuit breaker.
Operation principle of the present invention: when soft straight toggle switch YK1 pushes soft state, when far and near control toggle switch YK2 pushes nearly control state, in trouble-free situation, the fault point K3 of soft start controller ZB is closed (as to break down, then fault point disconnects, whole closing circuit disconnects, and whole switch is out of service).Press switch knob QA, relay coil I JZC1 obtains electric adhesive, after unclamping switch knob QA, carrys out self-insurance by relay coil I normally opened contact I JZC1-2, makes the long-term adhesive of relay coil I JZC1.Relay coil I JZC1 adhesive, by relay coil I normally opened contact II JZC1-4 to the input I1 signal of controller Logo, controller Logo makes output point I Q1 conducting by the program setting according to itself after the signal that receives, relay coil II JZC2 adhesive after output point I QI conducting, thus drive relay coil II normally opened contact I JZC2-1 and drive relay coil II normally opened contact II JZC2-2 to become normally-closed contact, vacuum contactor line bag KM1 adhesive is energized, vacuum contactor line bag normally opened contact KM1-1 be passed through to the input I2 signal of controller Logo after vacuum contactor line bag KM1 adhesive, program setting according to after controller Logo receives signal itself makes output point II Q2 conducting, soft start controller ZB receives soft signal.After receiving soft signal, electric power thyristor SCR makes to be changed from small to big by the electric current of itself according to the angle of flow of change itself, makes motor start soft start.According to soft the time that soft start controller ZB sets, from receive soft after signal beginning and end time terminates, as fault-free then soft start controller ZB give an order to bypass contact K1 is closed and (break down in soft process, then the fault point K3 of soft start controller disconnects, soft failure), relay coil III JZC3 adhesive, thus drive relay coil III normally opened contact I JZC3-1 and drive relay coil III normally opened contact II JZC3-2 often to open and become normally closed, bypass contactor line bag KM2 adhesive is energized.Combined floodgate feedback command (as soft start controller does not receive feedback signal, be then also judged to be soft fault, fault point K3 disconnects) is sent by bypass contactor line bag normally opened contact KM2-1 to soft start controller ZB after bypass contactor line bag KM2 adhesive.After receiving feedback command, electric power thyristor is out of service, and soft completes.Motor is run by bypass contactor KM2-abc major loop and the adhesive of isolation contactor KM1-abc major loop.
Claims (6)
1. the two contactor low voltage AC soft starting device of mine explosion-suppression and intrinsic safety matter safety-type, it is characterized in that: it comprises three-phase inlet wire (R, S, T) the isolation reversing switch (GHK) be connected, isolation reversing switch (GHK) is connected with the input of three groups of antiparallel electric power thyristors (SCR), output and three groups of loads (D1, D2, D3) of electric power thyristor (SCR) are connected; Bypass contactor (KM2-abc) is provided with at electric power thyristor (SCR) two ends, the output of electric power thyristor (SCR) and three groups of load (D1, D2, D3) be provided with isolation contactor (KM1-abc) between, bypass contactor (KM2-abc) is connected with secondary circuit by soft start controller (ZB) with isolation contactor (KM1-abc).
2. the two contactor low voltage AC soft starting device of mine explosion-suppression and intrinsic safety matter safety-type according to claim 1, is characterized in that: described isolation contactor (KM1-abc) is CKJ5-400/1140 vacuum contactor.
3. the two contactor low voltage AC soft starting device of mine explosion-suppression and intrinsic safety matter safety-type according to claim 1, is characterized in that: described isolation contactor (KM1-abc) is T5N 630 circuit breaker.
4. the two contactor low voltage AC soft starting device of mine explosion-suppression and intrinsic safety matter safety-type according to claim 1, is characterized in that: described bypass contactor (KM2-abc) is CKJ5-400/1140 vacuum contactor.
5., according to the two contactor low voltage AC soft starting device of the arbitrary described mine explosion-suppression and intrinsic safety matter safety-type of Claims 1 to 4, it is characterized in that: described electric power thyristor (SCR) is KT9-1200/1500 controllable silicon.
6., according to the two contactor low voltage AC soft starting device of the arbitrary described mine explosion-suppression and intrinsic safety matter safety-type of Claims 1 to 4, it is characterized in that: described soft start controller (ZB) is MX soft initiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310587819.8A CN104660107A (en) | 2013-11-21 | 2013-11-21 | Mining flame-proof and intrinsically safe double-contactor low-voltage alternating-current soft starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310587819.8A CN104660107A (en) | 2013-11-21 | 2013-11-21 | Mining flame-proof and intrinsically safe double-contactor low-voltage alternating-current soft starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104660107A true CN104660107A (en) | 2015-05-27 |
Family
ID=53250891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310587819.8A Pending CN104660107A (en) | 2013-11-21 | 2013-11-21 | Mining flame-proof and intrinsically safe double-contactor low-voltage alternating-current soft starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104660107A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017153098A1 (en) * | 2016-03-08 | 2017-09-14 | Siemens Aktiengesellschaft | Motor starter and diagnosis method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4996469A (en) * | 1990-03-16 | 1991-02-26 | Allen-Bradley Company, Inc. | Electric motor controller with bypass contactor |
| US5953189A (en) * | 1996-05-10 | 1999-09-14 | Schneider Electric Sa | Circuit for the protected power supply of an electrical load |
| CN201422090Y (en) * | 2009-05-26 | 2010-03-10 | 太原惠特科技有限公司 | Soft starter with PROFIBUS-DP communication function |
| CN202364164U (en) * | 2011-12-05 | 2012-08-01 | 太原惠特科技有限公司 | Explosion suppression and intrinsic safety type alternating-current vacuum combined soft starter for mining |
| CN203691293U (en) * | 2013-11-21 | 2014-07-02 | 河南省济源市矿用电器有限责任公司 | Mining explosion-proof and intrinsically-safe dual-contactor low-voltage AC soft starter |
-
2013
- 2013-11-21 CN CN201310587819.8A patent/CN104660107A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4996469A (en) * | 1990-03-16 | 1991-02-26 | Allen-Bradley Company, Inc. | Electric motor controller with bypass contactor |
| US5953189A (en) * | 1996-05-10 | 1999-09-14 | Schneider Electric Sa | Circuit for the protected power supply of an electrical load |
| CN201422090Y (en) * | 2009-05-26 | 2010-03-10 | 太原惠特科技有限公司 | Soft starter with PROFIBUS-DP communication function |
| CN202364164U (en) * | 2011-12-05 | 2012-08-01 | 太原惠特科技有限公司 | Explosion suppression and intrinsic safety type alternating-current vacuum combined soft starter for mining |
| CN203691293U (en) * | 2013-11-21 | 2014-07-02 | 河南省济源市矿用电器有限责任公司 | Mining explosion-proof and intrinsically-safe dual-contactor low-voltage AC soft starter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017153098A1 (en) * | 2016-03-08 | 2017-09-14 | Siemens Aktiengesellschaft | Motor starter and diagnosis method |
| CN108781046A (en) * | 2016-03-08 | 2018-11-09 | 西门子股份公司 | Motor starter and diagnostic method |
| US10873279B2 (en) | 2016-03-08 | 2020-12-22 | Siemens Aktiengesellschaft | Motor starter and diagnosis method |
| CN108781046B (en) * | 2016-03-08 | 2023-02-17 | 西门子股份公司 | Motor starter and diagnostic method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018223631A1 (en) | Rapid shutdown system applied to photovoltaic power generation | |
| CN205427552U (en) | High -voltage switch intelligent control ware | |
| CN211089218U (en) | High-capacity high-reliability rapid power supply switching device | |
| CN104283263A (en) | Direct-current charging pile main circuit double-control power supply system and control method thereof | |
| CN104600834A (en) | Emergency power supply circuit and power supply circuit conversion method | |
| CN104868584B (en) | A kind of seamless automatic switching control equipment of dc source | |
| CN104242439B (en) | A kind of alternating current-direct current is without delay switching method and switched system | |
| CN103311889A (en) | Manual switching protection circuit for dual power supplies | |
| CN203691293U (en) | Mining explosion-proof and intrinsically-safe dual-contactor low-voltage AC soft starter | |
| CN102684158A (en) | Overheat delay protection device for motor | |
| CN210608966U (en) | Double-loop double-speed electromagnetic starter | |
| CN103414241A (en) | Automatic switching power supply circuit used in underground coal mine | |
| CN104660107A (en) | Mining flame-proof and intrinsically safe double-contactor low-voltage alternating-current soft starter | |
| CN208226541U (en) | A kind of controllable cathode ground connection and buffer circuit and photovoltaic inverting system | |
| CN203774211U (en) | Automatic closing control circuit of universal circuit breaker | |
| CN206939100U (en) | Telemetry circuit on the machine of solid state distribution device SSPC passages | |
| CN202798126U (en) | Automatic switching system for uninterrupted power supply of PLC (programmable logic controller) | |
| CN207800395U (en) | Box type transformer low pressure universal switch automatic switching-on device | |
| CN204376525U (en) | A kind of emergency supply circuit | |
| CN204794028U (en) | Intellectuality ac motor protector that is just reversing | |
| CN203434595U (en) | Dual power supply manual switch protection circuit | |
| CN204633646U (en) | A kind of disintegrating machine threephase asynchronous machine soft starting device | |
| CN204314645U (en) | A kind of low-voltage distribution system by screen break-make automaton | |
| CN203911570U (en) | Double-circuit high-voltage power supply circuit | |
| CN203562833U (en) | Automatic dual-power-supply switching device for air blowers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Bintao Inventor after: Tang Shuai Inventor after: Du Bin Inventor after: Wang Ruili Inventor after: Yang Guangming Inventor after: Wang Weihong Inventor after: Kong Gaiyan Inventor after: Wang Jingbo Inventor after: Shi Zhiyuan Inventor after: Mei Rongzhi Inventor before: Zhou Bintao Inventor before: Yang Guangming Inventor before: Wang Weihong Inventor before: Liu Wuyang Inventor before: Kong Gaiyan Inventor before: Zhao Dongyan Inventor before: Ban Binbin Inventor before: Mei Rongzhi |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150527 |
|
| RJ01 | Rejection of invention patent application after publication |