CN105932927A - Automatic control device for AC power phase sequence of air compressor - Google Patents
Automatic control device for AC power phase sequence of air compressor Download PDFInfo
- Publication number
- CN105932927A CN105932927A CN201610451228.1A CN201610451228A CN105932927A CN 105932927 A CN105932927 A CN 105932927A CN 201610451228 A CN201610451228 A CN 201610451228A CN 105932927 A CN105932927 A CN 105932927A
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- CN
- China
- Prior art keywords
- contactor
- phase sequence
- alternating current
- air compressor
- contact
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- 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.)
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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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention discloses an automatic control device for an AC power phase sequence of an air compressor. The automatic control device mainly comprises a phase sequence relay, interlocking AC contactors and a peripheral circuit; an input alternating current is compared through the phase sequence relay, and outputs a control signal to the AC contactors; if the phase sequence is correct, the first AC contactor is closed and the second AC contactor does not act; and if the phase sequence is wrong, the first AC contactor does not act and the second AC contactor is closed, so that the condition that the output AC phase sequence is always correct is ensured. The interlocking mode is adopted by the two AC contactors, so that the condition that only one AC contactor is closed at the same time is ensured; and a power short-circuit is avoided.
Description
Technical field
The invention belongs to air compressor field, be specifically related to a kind of air compressor alternating current power supply phase sequence automatic
Control device.
Background technology
High power air compressor has relatively broad application in national defence, these high power air compressors
Belong to electrical equipment, use three-phase alternating-current supply as driving.Often occur during equipment uses
The qualified equipment of debugging that dispatches from the factory is using unit normally not launch, and a chief reason inputs 380V exactly
High Level AC Voltage phase sequence is not mated.Equipment necessarily requires the correct equipment of input power phase sequence normally to start,
If otherwise phase sequence mistake, motor reversal can directly damage air compressor, cause heavy losses.Work is met
To this situation, professional's execute-in-place is needed to change input High Level AC Voltage phase sequence, to the use of equipment
Bring very big inconvenience and potential safety hazard.
The air compressor that army's equipment in use is supporting at present, the most each equipment is required in time when using
Adjust and change phase sequence, continually start and stop powerful device, add the fault rate of equipment, reduce equipment
Service life, simultaneously also can affect stablizing of power supply circuits continually.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of air compressor alternating current power supply phase sequence and automatically controls dress
Put.
For solving the problems referred to above, the technical solution used in the present invention is as follows:
A kind of air compressor alternating current power supply phase sequence automaton, including phase sequence relay, the first exchange
Catalyst, the second A.C. contactor；Three contacts of described phase sequence relay connect the three-phase of alternating current respectively,
The normally opened contact of phase sequence relay and the coils connected in series of the first A.C. contactor also control the first A.C. contactor
Normally opened auxiliary contact, the normally-closed contact of phase sequence relay and the coils connected in series of the second A.C. contactor also control
The normally opened auxiliary contact of two A.C. contactors；
Described first A.C. contactor, the second A.C. contactor interlocking connection；
After described first A.C. contactor, the second ac contactor coil place loop parallel connection, two ends, loop are even
Connect the most biphase of alternating current；
Described first A.C. contactor and the main contact parallel of the second A.C. contactor, two A.C. contactors
Main contacts input accesses alternating current after phase sequence relay, and the input order of connection is identical；Two exchanges
The main contacts outfan of catalyst connects load, and output end wiring order is contrary.
Further, described first A.C. contactor, the second A.C. contactor interlock mode are: the first exchange
The coil of catalyst and the normally closed auxiliary contact series connection of the second A.C. contactor, the coil of the second A.C. contactor
Connect with the normally closed auxiliary contact of the first A.C. contactor.
Further, pacify before the main contacts of described first A.C. contactor and the main contacts of the second A.C. contactor
Dress electric switch.
Beneficial effects of the present invention is as follows:
Air compressor alternating current power supply phase sequence automaton of the present invention, it is achieved that do not having human intervention feelings
Under condition, how outside input 380V alternating current power supply phase sequence changes, and equipment all can run well, preferably
Solve army equipment use during problem.Do not affect service life of equipment, do not increase professional people
The cost that member intervenes.
Two A.C. contactors of the present invention use interlock mode, it is ensured that the same time only has an A.C. contactor
Adhesive, does not haves power supply short circuit.
The present invention can promote the use of the Large Electric machinery construction fields such as mine, bridge, culvert.
Accompanying drawing explanation
Fig. 1 is air compressor alternating current power supply phase sequence automaton structural representation of the present invention.
Detailed description of the invention
Problem is automatically controlled, employing below scheme in order to solve air compressor alternating current power supply phase sequence:
Air compressor alternating current power supply phase sequence automaton of the present invention is connected on air compressor alternating current power supply
In electric loop, including 1 phase sequence relay, 2 A.C. contactors and peripheral circuit, use phase sequence relay
Device controls the A.C. contactor of 2 interlockings and realizes automatically controlling of phase sequence.Phase sequence relay uses voltage sampling
Mode, it is not necessary to carry out the adjustment of any current class.Phase sequence relay the most just can interpolate that alternating current phase sequence
Really, it addition, disconnected phase, the abnormal condition of Voltage unbalance occur at the main circuit of ac three-phase asynchronous motor
Time, electrical contact, fast and reliable ground protection motor can be disconnected in time.
As it is shown in figure 1, the three-phase alternating current of external input device (380V) L1, L2, L3 receive phase sequence and continue
On first contact 3, the 1, second contact the 2, the 3rd, contact of electrical equipment, phase sequence relay normally opened contact 5,6 with
The coils connected in series of the first A.C. contactor KM1 also controls the normally opened auxiliary contact of the first A.C. contactor KM1,
The coils connected in series of normally-closed contact 7, the 8 and second A.C. contactor KM2 of phase sequence relay also controls the second friendship
The normally opened auxiliary contact of stream catalyst KM2.
Described first, second A.C. contactor interlocking connection, the coil of the first A.C. contactor KM1, normally opened
The normally closed auxiliary contact series connection of auxiliary contact and the second A.C. contactor KM2, the second A.C. contactor KM2
Coil, normally opened auxiliary contact and the first A.C. contactor KM1 normally closed auxiliary contact series connection.Described first,
After second ac contactor coil place loop parallel connection, two ends, loop connect the most biphase of alternating current；Coil
Loop is used for performing control instruction.
The main contacts of described first A.C. contactor KM1 and the main contact parallel of the second A.C. contactor KM2,
The main contacts input of two A.C. contactors accesses alternating current after phase sequence relay, the order of connection be L1,
L2、L3；The main contacts outfan of two A.C. contactors connects load, the main contacts of the first A.C. contactor
Output end wiring order is L1, L2, L3, the second A.C. contactor KM2 main contacts output end wiring order
It is L3, L2, L1.A.C. contactor main contacts is used for opening and closing circuit.Switch can also be installed before main contacts
K controls the contactor of alternating current.
The auxiliary contact of A.C. contactor have a characteristic that in the case of A.C. contactor does not work,
Normally opened auxiliary contact are open circuit, and normally closed auxiliary contact is Guan Bi；When A.C. contactor works, normally closed auxiliary
Contact first disconnects, and normally opened auxiliary contact are closed again；When A.C. contactor power-off, normally opened auxiliary contact first break
Open, normally closed auxiliary contact just closed reduction.
For two A.C. contactors of interlocking, when the first A.C. contactor KM1 coil obtains electric, first hands over
Stream catalyst KM1 normally closed auxiliary contact first disconnects, the first A.C. contactor KM1 normally opened auxiliary contact Guan Bi.
And the wire loop series connection of the first A.C. contactor KM1 normally closed auxiliary contact and the second A.C. contactor KM2,
Therefore the second A.C. contactor KM2 does not works.Otherwise when the second A.C. contactor KM2 coil obtains electric,
Second A.C. contactor KM2 normally closed auxiliary contact first disconnects, and the second normally opened auxiliary of A.C. contactor KM2 is touched
Point Guan Bi.And the second A.C. contactor KM2 normally closed auxiliary contact and the coil of the first A.C. contactor KM1
Circuit in series, therefore the first A.C. contactor KM1 does not works.The A.C. contactor of two such interlocking,
Same time only one of which works, it is ensured that alternate do not have short circuit.Certain two A.C. contactors can also
Use mechanical interlocked mode.
Air compressor alternating current power supply phase sequence automaton operation principle of the present invention is as follows:
If three-phase alternating current L1, L2, L3 phase sequence of input phase sequence relay is correct, then phase sequence relay is normal
Closed contact 7,8 disconnect, normally opened contact 5,6 adhesive, the first A.C. contactor KM1 coil obtain electric adhesive,
Second A.C. contactor KM2 release, input load phase order of 3-phase AC is L1, L2, L3.If it is defeated
Enter three-phase alternating current L1, L2, L3 phase sequence mistake of phase sequence relay, then phase sequence relay normally opened contact 5,
6 disconnect, and normally-closed contact 7,8 closes, and the second A.C. contactor KM2 coil obtains electric adhesive, the first exchange connects
Tentaculum KM1 discharges, and input load phase order of 3-phase AC is L3, L2, L1；No matter this ensures that there
How external input power phase sequence changes, and motor all can run well.
Above in conjunction with accompanying drawing, embodiments of the present invention are explained in detail, but on the present invention is not limited to
State embodiment, in the ken that one skilled in the relevant art is possessed, without departing from structure of the present invention
Think the various changes made, still fall in protection scope of the present invention.
Claims (3)
1. an air compressor alternating current power supply phase sequence automaton, it is characterised in that include that phase sequence continues
Electrical equipment, the first A.C. contactor, the second A.C. contactor；Three contacts of described phase sequence relay connect respectively
Connecing the three-phase of alternating current, the normally opened contact of phase sequence relay and the coils connected in series of the first A.C. contactor also control
The normally opened auxiliary contact of the first A.C. contactor, the normally-closed contact of phase sequence relay and the second A.C. contactor
Coils connected in series also controls the normally opened auxiliary contact of the second A.C. contactor；
Described first A.C. contactor, the second A.C. contactor interlocking connection；
After described first A.C. contactor, the second ac contactor coil place loop parallel connection, two ends, loop are even
Connect the most biphase of alternating current；
Described first A.C. contactor and the main contact parallel of the second A.C. contactor, two A.C. contactors
Main contacts input accesses alternating current after phase sequence relay, and the input order of connection is identical；Two exchanges
The main contacts outfan of catalyst connects load, and output end wiring order is contrary.
2. air compressor alternating current power supply phase sequence automaton as claimed in claim 1, its feature exists
In, described first A.C. contactor, the second A.C. contactor interlock mode be: the line of the first A.C. contactor
Circle is connected with the normally closed auxiliary contact of the second A.C. contactor, the coil of the second A.C. contactor and the first exchange
The normally closed auxiliary contact series connection of catalyst.
3. air compressor alternating current power supply phase sequence automaton as claimed in claim 1 or 2, it is special
Levy and be, install electrically before the main contacts of described first A.C. contactor and the main contacts of the second A.C. contactor
Switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451228.1A CN105932927A (en) | 2016-06-22 | 2016-06-22 | Automatic control device for AC power phase sequence of air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451228.1A CN105932927A (en) | 2016-06-22 | 2016-06-22 | Automatic control device for AC power phase sequence of air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105932927A true CN105932927A (en) | 2016-09-07 |
Family
ID=56830672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610451228.1A Pending CN105932927A (en) | 2016-06-22 | 2016-06-22 | Automatic control device for AC power phase sequence of air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105932927A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288323A (en) * | 2017-04-28 | 2017-10-24 | 张晓宇 | A kind of control system of full-automatic concrete flush coater |
| CN110323733A (en) * | 2019-08-12 | 2019-10-11 | 合肥天鹅制冷科技有限公司 | A kind of three-phase alternating current arbitrarily connects adjust automatically protection circuit |
| CN110398639A (en) * | 2019-08-12 | 2019-11-01 | 合肥天鹅制冷科技有限公司 | A kind of three-phase alternating current adjust automatically detection circuit |
| 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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|---|---|---|---|---|
| CN2746622Y (en) * | 2004-08-15 | 2005-12-14 | 戴开煌 | Automatic corrector for three-phase AC phase-sequence uncorrect |
| CN202424164U (en) * | 2012-02-23 | 2012-09-05 | 中联重科股份有限公司 | Phase sequence controller for three-phase alternating current power supply, three-phase alternating current motor and trash compactor |
| CN205141656U (en) * | 2015-10-29 | 2016-04-06 | 上海海立特种制冷设备有限公司 | Automatic congruence that entangles of bridge crane air conditioner lacks looks protection device |
| CN205792332U (en) * | 2016-06-22 | 2016-12-07 | 中国人民解放军95989部队 | Air compressor alternating current power supply phase sequence automaton |
-
2016
- 2016-06-22 CN CN201610451228.1A patent/CN105932927A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2746622Y (en) * | 2004-08-15 | 2005-12-14 | 戴开煌 | Automatic corrector for three-phase AC phase-sequence uncorrect |
| CN202424164U (en) * | 2012-02-23 | 2012-09-05 | 中联重科股份有限公司 | Phase sequence controller for three-phase alternating current power supply, three-phase alternating current motor and trash compactor |
| CN205141656U (en) * | 2015-10-29 | 2016-04-06 | 上海海立特种制冷设备有限公司 | Automatic congruence that entangles of bridge crane air conditioner lacks looks protection device |
| CN205792332U (en) * | 2016-06-22 | 2016-12-07 | 中国人民解放军95989部队 | Air compressor alternating current power supply phase sequence automaton |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288323A (en) * | 2017-04-28 | 2017-10-24 | 张晓宇 | A kind of control system of full-automatic concrete flush coater |
| CN110323733A (en) * | 2019-08-12 | 2019-10-11 | 合肥天鹅制冷科技有限公司 | A kind of three-phase alternating current arbitrarily connects adjust automatically protection circuit |
| CN110398639A (en) * | 2019-08-12 | 2019-11-01 | 合肥天鹅制冷科技有限公司 | A kind of three-phase alternating current adjust automatically detection circuit |
| 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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| 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: Gao Junwei Inventor after: Gan Changhai Inventor after: Sun Yongsheng Inventor after: Fang Fang Inventor after: Dai Xiaobo Inventor after: Chen Ran Inventor before: Gao Junwei Inventor before: Gan Changhai Inventor before: Sun Yongsheng Inventor before: Dai Xiaobo Inventor before: Chen Ran |
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| COR | Change of bibliographic data | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160907 |