CN207967919U - A kind of mobile air conditioner unit with misphase default-phase protection function - Google Patents
A kind of mobile air conditioner unit with misphase default-phase protection function Download PDFInfo
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- CN207967919U CN207967919U CN201820190871.8U CN201820190871U CN207967919U CN 207967919 U CN207967919 U CN 207967919U CN 201820190871 U CN201820190871 U CN 201820190871U CN 207967919 U CN207967919 U CN 207967919U
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Abstract
The utility model discloses a kind of mobile air conditioner units with misphase default-phase protection function,It is related to technical field of electric power,The mobile air conditioner unit includes operation main circuit,Control circuit and electrical equipment,Run main circuit connection three phase mains and electrical equipment,Control circuit control connection operation main circuit,It includes the first phase sequence relay and the second phase sequence relay to run main circuit,First phase sequence relay and the second phase sequence relay sample the phase sequence of three-phase line,The output relay switch access operation main circuit of first phase sequence relay,The output relay switch access control circuit of second phase sequence relay,So that the mobile air conditioner unit can also be worked normally in power supply misphase,With good fault tolerance,When open-phase fault occurs for power supply,The power supply of phase shortage can not be conducted to electrical equipment,Circuit protection has been carried out to electrical equipment and entire mobile air conditioner unit,With good misphase default-phase protection function.
Description
Technical field
The utility model is related to technical field of electric power, especially a kind of movable air conditioner with misphase default-phase protection function
Group.
Background technology
Mobile air conditioner unit is a kind of common engineering guarantee mobile device, for being winged before taking off and after landing
Machine provides service, can be used to aircraft passenger compartment, freight house, fuel tank and other aircraft repair region transporting cold wind, hot wind and natural winds
In the particular/special requirement for improving working environment, ensureing aircraft repair technique to environment.
In actual use, a mobile air conditioner unit generally can be multiple in military or civilian aircraft maintenance workshop internal field
Place movement uses, and the power supply that this multiple place is provided is not quite similar, when the phase sequence for the power supply that this multiple place provides is different
When, mobile air conditioner unit can not be worked normally in each job site, and fault-tolerance and reliability are poor.
Utility model content
The present inventor is regarding to the issue above and technical need, it is proposed that a kind of mobile sky with misphase default-phase protection function
It adjusts unit, the mobile air conditioner unit that can also be worked normally in misphase, there is good fault tolerance, when open-phase fault occurs
It is stopped to protect electrical equipment, there is good circuit protection function.
The technical solution of the utility model is as follows：
A kind of mobile air conditioner unit with misphase default-phase protection function, the mobile air conditioner unit include：Operation main circuit,
Control circuit and electrical equipment, the input terminal for running the three-phase line of main circuit are used to connect three phase mains, three-phase line
Output end connects electrical equipment, and control circuit control connection operation main circuit, electrical equipment includes air blower, compressor and condensation
At least one of wind turbine；
Operation main circuit includes the first phase sequence relay, the second phase sequence relay, first contactor and second contactor,
First contactor includes first contactor coil, first contactor normally opened contact, first contactor auxiliary contact, first contactor
Normally opened contact includes three groups of contacts, and first contactor coil control connection first contactor normally opened contact and first contactor are auxiliary
Help contact；Second contactor includes second contactor coil, second contactor normally opened contact, second contactor auxiliary contact, and
Two contactor normally opened contacts include three groups of contacts, second contactor coil control connection second contactor normally opened contact and second
Contactor auxiliary contact；First contactor normally opened contact and second contactor normally opened contact are in parallel, which is connected to fortune
Between the input terminal and output end of row main circuit, the input terminal of three groups of contacts in first contactor normally opened contact is sequentially connected three
The output end of the first phase, the second phase in circuitry phase and third phase, three groups of contacts in first contactor normally opened contact connects successively
Connect the first phase, the second phase and the third phase in three-phase circuit；The input terminal of three groups of contacts in second contactor normally opened contact according to
Third phase, the second phase in secondary connection three-phase circuit and the first phase, the output of three groups of contacts in second contactor normally opened contact
End is sequentially connected the first phase, the second phase and third phase in three-phase circuit；
First phase sequence relay be connected in parallel on input terminal and the first contactor normally opened contact of operation main circuit input terminal it
Between, three sampling ends of the first phase sequence relay are sequentially connected the first phase, the second phase and third phase in three-phase circuit, the first phase
The common connection open type starter relay switch of sequence protector, the first power supply of other end connection of starter relay switch
Power supply, the first phase sequence relay normally opened contact connection first contactor coil and second contactor auxiliary contact after be grounded；The
It is grounded after the normally-closed contact connection second contactor coil and first contactor auxiliary contact of one phase sequence relay, the first phase sequence is protected
Be connected with open type output relay switch between common and normally opened contact in shield device, common and normally-closed contact it
Between be connected with closed type output relay switch；
Second phase sequence relay be connected in parallel on the output end of first contactor normally opened contact and operation main circuit output end it
Between, three sampling ends of the second phase sequence relay are sequentially connected the first phase, the second phase and third phase in three-phase circuit, the second phase
Open type output relay switch in sequence protector is connected in control circuit；
Control circuit includes the open type output relay in start button, starter relay and the second phase sequence relay
Switch, starter relay include starter relay coil and open type starter relay switch, the control of starter relay coil
Starter relay switch in connection operation main circuit and control circuit, start button are connected with starter relay coil, the string
The one end for joining circuit connects the second power supply, other end ground connection, and the open type output relay in the second phase sequence relay is opened
It closes and connects with starter relay switch, and the self-locking circuit that forms start button in parallel with start button.
Its further technical solution is to further include transformer in the circuit of mobile air conditioner unit, run the three of main circuit
First phase of phase line and the input terminal of the second phase are separately connected the both ends of the primary coil of transformer, the first phase sequence relay
Common connects one end of the first secondary coil of connection transformer after open type starter relay switchs, the first phase sequence
Device normally opened contact connection first contactor coil and second contactor auxiliary contact after connect the first secondary coil the other end,
It is also connected for the first time after the normally-closed contact connection second contactor coil and first contactor auxiliary contact of first phase sequence relay
The other end of grade coil；Start button connect the second subprime line of transformer with one end of the series circuit of starter relay coil
One end of circle, the other end of the other end connection second subprime coil of the series circuit.
Its further technical solution is that for providing 220V alternating currents, the second power supply is used for the first power supply
24V alternating currents are provided.
The advantageous effects of the utility model are：
This application discloses a kind of mobile air conditioner unit, circuit of the mobile air conditioner unit in existing mobile air conditioner unit
The first phase sequence relay of middle increase and the second phase sequence relay so that the mobile air conditioner unit also can normal work in power supply misphase
Make, there is good fault tolerance, while when open-phase fault occurs for power supply, the power supply of phase shortage can not be conducted to electrical equipment,
Circuit protection is carried out to electrical equipment and entire mobile air conditioner unit so that mobile air conditioner unit disclosed in the present application has good
Good misphase default-phase protection function.
Description of the drawings
Fig. 1 is the circuit structure diagram of mobile air conditioner unit disclosed in the present application.
Fig. 2 is the circuit diagram of mobile air conditioner unit disclosed in the present application.
Specific implementation mode
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
This application discloses a kind of mobile air conditioner units with misphase default-phase protection function, referring to FIG. 1, the movement is empty
Adjust unit include：Operation main circuit, control circuit and electrical equipment M, the input terminal for running the three-phase line of main circuit are used for
The output end connection driving electrical equipment M of three phase mains, three-phase line is connected, control circuit control connection operation main circuit is used
Electric equipment M includes at least one of air blower, compressor and condensation fan.
The circuit diagram shown is please referred to Fig.2, operation main circuit includes the first phase sequence relay KR1, the second phase sequence
Device KR2, first contactor KM1 and second contactor KM2.First contactor KM1 includes first contactor coil, first contactor
Normally opened contact and first contactor auxiliary contact, first contactor normally opened contact KM1 include three groups of contacts, first contactor line
Enclose KM1 control connections first contactor normally opened contact KM1 and first contactor auxiliary contact KM1.Second contactor KM2 includes the
Two contactor coils, second contactor normally opened contact, second contactor auxiliary contact wrap in second contactor normally opened contact KM2
Include three groups of contacts, second contactor coil KM2 controls connection second contactor normally opened contact KM2 and second contactor auxiliary contact
KM2。
First contactor normally opened contact KM1 and second contactor normally opened contact KM2 are in parallel, which is connected to operation
Between the input terminal and output end of main circuit, the input terminal of three groups of contacts in first contactor normally opened contact KM1 is sequentially connected
The output of the first phase A, the second phase B in three-phase circuit and three groups of contacts in third phase C, first contactor normally opened contact KM1
End is sequentially connected the first phase A, the second phase B and third phase C in three-phase circuit；Three groups in second contactor normally opened contact KM2
The input terminal of contact is sequentially connected third phase C, the second phase B and the first phase A in three-phase circuit, second contactor normally opened contact
The output end of three groups of contacts in KM2 is sequentially connected the first phase A, the second phase B and third phase C in three-phase circuit.
The structure of first phase sequence relay KR1 and the second phase sequence relay KR2 are identical, and each phase sequence relay includes three
Sampling end L1, L2 and L3, further include a common, a normally opened contact and a normally-closed contact, common and normally opened
It is connected with open type output relay switch between contact, closed type output relay is connected between common and normally-closed contact
Device switchs, the phase sequence control of power supply the two output relays switch that phase sequence relay is sampled according to sampling end.
First phase sequence relay KR1 is connected in parallel on the defeated of input terminal and the first contactor normally opened contact KM1 of operation main circuit
Between entering end, three sampling ends L1, L2 and L3 of the first phase sequence relay KR1 are sequentially connected the first phase A in three-phase circuit,
The common COM connection open type starter relay switch KA1 of two-phase B and third phase C, the first phase sequence relay KR1 are started
The other end of relay switch KA1 connects the first power supply, and the normally opened contact NO connections first of the first phase sequence relay KR1 connect
It is grounded after tentaculum coil KM1 and second contactor auxiliary contact KM2；The normally-closed contact NC connections of first phase sequence relay KR1
It is grounded after two contactor coil KN2 and first contactor auxiliary contact KM1.
Second phase sequence relay KR2 is connected in parallel on the defeated of the output end of first contactor normally opened contact KM1 and operation main circuit
Between outlet, three sampling ends L1, L2 and L3 of the second phase sequence relay KR2 are sequentially connected the first phase A in three-phase circuit,
Open type output relay switch in two-phase B and third phase C, the second phase sequence relay KR2 is connected in control circuit, namely
In the common COM and normally opened contact NO access control circuits of second phase sequence relay KR2.
Control circuit includes the open type output in start button SB1, starter relay KA1 and the second phase sequence relay
Relay switch, starter relay KA1 include starter relay coil and open type starter relay switch, starter relay
Starter relay switch KA1 in coil KA1 control connection operation main circuits and control circuit.Start button SB1 with start after
One end of electric apparatus coil KA1 series connection, the series circuit connects the second power supply, other end ground connection, the second phase sequence relay KR2
In open type output relay switch KR2 connect with starter relay switch KA1, and it is in parallel with start button SB1 formation open
The self-locking circuit of dynamic button, that is, the second power supply of common COM connections, the normally opened contact of the second phase sequence relay KR2
NO connection starter relay switches KA1.
In this application, the first power supply and the second power supply draw from operation main circuit and divide to obtain, then
As shown in Fig. 2, further including transformer T in the circuit of mobile air conditioner unit, the first phase A and of the three-phase line of main circuit is run
The input terminal of two-phase B is separately connected the both ends of the primary coil of transformer T, to input 380V alternating currents, the first of transformer T
One end output of secondary coil T1 is the common of the first power supply, other end ground connection namely the first phase sequence relay KR1
One end of the first secondary coil T1 of transformer T is connected after COM connection open type starter relay switches KA1, the first phase sequence is protected
First grade is connected after normally opened contact the NO connections first contactor coil KM1 and second contactor auxiliary contact KM2 of shield device KR1
The other end of coil T1, the normally-closed contact NC connections second contactor coil KM2 of the first phase sequence relay KR1 and first contactor
Also the other end of the first secondary coil T1 is connected after auxiliary contact KM1.One end of the second subprime coil T2 of transformer T exports
One end of the series circuit of second power supply, other end ground connection namely start button SB1 and starter relay coil KA1 connects
Connect one end of the second subprime coil T2 of transformer T, the other end of the other end connection second subprime coil T2 of the series circuit.
Coil between primary coil and the first secondary coil T1 according to the voltage value of the first power supply than setting, in this application,
For providing 220V alternating currents, the coil ratio between primary coil and second subprime coil T2 supplies first power supply according to second
The voltage value of power supply is set, and in this application, the second power supply is for providing 24V alternating currents.
The operation principle of mobile air conditioner unit disclosed in the present application is：
Under normal conditions, a kind of a kind of phase sequence of three-phase line is defaulted as positive phase sequence by mobile air conditioner unit, such as
It is positive phase sequence to give tacit consent to the first phase A, the second phase B and each poor 120 degree phase angles of third phase C sequence, then the first phase sequence relay KR1 with
It is positive phase sequence that second phase sequence relay KR2, which gives tacit consent to the phase sequence,.
When mobile air conditioner unit using plug for industrial use in P in use, powered on, it is assumed that the three phase mains provided to P
For the power supply of positive phase sequence, user presses start button SB1, starter relay coil KA1 energized actions, control operation main circuit and
Starter relay switch KA1 in control circuit is closed, and three sampling ends of the first phase sequence relay KR1 sample positive phase sequence,
Then the first phase sequence relay KR1 is acted and is controlled the open type output relay between common COM and normally opened contact NO and opens
It closes and is attracted, the closed type output relay switch controlled between common COM and normally-closed contact NC disconnects, then runs main circuit
In first contactor coil KM1 energized actions, control first contactor normally opened contact KM1 is closed, and primary circuit obtains electric, phase sequence
Constant, three sampling ends of subsequent second phase sequence relay KR2 sample positive phase sequence, then the second phase sequence relay KR2 is acted simultaneously
The open type output relay switch controlled between common COM and normally opened contact NO is attracted, and the self-locking of start button SB1 is returned
Road is connected, after start button SB1 unclamps, electrical equipment also continuous service.
When the mobile air conditioner unit using plug for industrial use with being moved to Q in use, powered on, it is assumed that three provided to Q
The positive phase sequence of phase power supply and acquiescence is inconsistent, then what three sampling ends of the first phase sequence relay KR1 sampled is not positive
Sequence, the first phase sequence relay KR1 are failure to actuate, the open type output relay switch between common COM and normally opened contact NO
It remains open, the closed type output relay switch between common COM and normally-closed contact NC keeps being attracted, then runs main electricity
Second contactor coil KM2 energized actions in road, control second contactor normally opened contact KM2 are closed, and primary circuit obtains electric, phase
Sequence changes into the positive phase sequence of acquiescence.Three sampling ends of subsequent second phase sequence relay KR2 sample positive phase sequence, then the second phase sequence
Protector KR2 is acted and is controlled the switch of the open type output relay between common COM and normally opened contact NO and is attracted, and is started
The self-locking circuit of button SB1 is connected, after start button SB1 unclamps, electrical equipment also continuous service.
In use, when power phase shortage failure occurs, there are mainly two types of situations for the mobile air conditioner unit：
The first situation, phase shortage be A phases or B phases, then the first secondary coil T1 of transformer cannot export normally
AC220V is to provide the first power supply, and main circuit contact device KM1 or KM2 will be unable to be attracted in this case, the power supply of phase shortage
It can not be conducted to electrical equipment M, electrical equipment M is protected.
The second situation, phase shortage are C phases, then the first phase sequence relay KR1 is failure to actuate, common COM and normally opened contact
Open type output relay switch between NO remains open, the closed type output between common COM and normally-closed contact NC
Relay switch keeps being attracted, then runs the second contactor coil KM2 energized actions in main circuit.Second phase sequence relay
KR2 is equally failure to actuate, and the open type output relay switch between common COM and normally opened contact NO remains open, and controls
The self-locking circuit of start button SB1 in circuit is not turned on, when pressing start button SB1 and unclamping again, starter relay coil KA1
Dead electricity, run main circuit in first contactor coil KM1 and second contactor coil KM2 can not all obtain it is electric, therefore run master
First contactor normally opened contact KM1 and second contactor normally opened contact KM2 in circuit can be disconnected, and the power supply of phase shortage can not be led
Electrical equipment M is passed to, electrical equipment M is protected.
Above-described is only the preferred embodiment of the application, and the utility model is not limited to above example.It can manage
Solution, those skilled in the art do not depart from the utility model spirit and design under the premise of directly export or associate other
It improves and changes, be considered as being included within the scope of protection of this utility model.
Claims (3)
1. a kind of mobile air conditioner unit with misphase default-phase protection function, which is characterized in that the mobile air conditioner unit includes：
Main circuit, control circuit and electrical equipment are run, the input terminal of the three-phase line of the operation main circuit is for connecting three-phase
The output end connection electrical equipment of power supply, three-phase line, the control circuit control connects the operation main circuit, described
Electrical equipment includes at least one of air blower, compressor and condensation fan；
The operation main circuit includes the first phase sequence relay, the second phase sequence relay, first contactor and second contactor,
The first contactor includes first contactor coil, first contactor normally opened contact, first contactor auxiliary contact, and described
One contactor normally opened contact includes three groups of contacts, and it is normally opened tactile that the first contactor coil control connects the first contactor
Point and the first contactor auxiliary contact；The second contactor, which includes second contactor coil, second contactor is normally opened touches
Point, second contactor auxiliary contact, the second contactor normally opened contact include three groups of contacts, the second contactor coil
Control connects the second contactor normally opened contact and the second contactor auxiliary contact；The first contactor normally opened contact
With the second contactor normally opened contact parallel connection, the parallel circuit be connected to it is described operation main circuit input terminal and output end it
Between, the input terminals of three groups of contacts in the first contactor normally opened contact is sequentially connected the first phase in three-phase circuit, second
Mutually and third phase, the output end of three groups of contacts in the first contactor normally opened contact are sequentially connected first in three-phase circuit
Phase, the second phase and third phase；The input terminal of three groups of contacts in the second contactor normally opened contact is sequentially connected three-phase circuit
In third phase, the second phase and the first phase, the output end of three groups of contacts in the second contactor normally opened contact is sequentially connected
The first phase, the second phase in three-phase circuit and third phase；
First phase sequence relay is connected in parallel on the input terminal of the operation main circuit and the first contactor normally opened contact
Between input terminal, three sampling ends of first phase sequence relay are sequentially connected the first phase in the three-phase circuit, second
It is mutually switched with third phase, the common connection open type starter relay of first phase sequence relay, the starting relay
The other end of device switch connects the first power supply, and the normally opened contact of first phase sequence relay connects the first contactor
It is grounded after coil and the second contactor auxiliary contact；The normally-closed contact connection described second of first phase sequence relay connects
It is grounded after tentaculum coil and the first contactor auxiliary contact, the common in first phase sequence relay is touched with normally opened
It is connected with open type output relay switch between point, closed type output relay is connected between common and normally-closed contact
Switch；
Second phase sequence relay is connected in parallel on the output end of the first contactor normally opened contact and the operation main circuit
Between output end, three sampling ends of second phase sequence relay are sequentially connected the first phase in the three-phase circuit, second
Mutually it is connected in the control circuit with third phase, the open type output relay switch in second phase sequence relay；
The control circuit include in start button, starter relay and second phase sequence relay open type output after
Electric switch, the starter relay include starter relay coil and open type starter relay switch, it is described start after
Electric apparatus coil control connection it is described operation main circuit and the control circuit in starter relay switch, the start button with
One end of the starter relay coil series connection, the series circuit connects the second power supply, other end ground connection, second phase
Open type output relay switch in sequence protector is connected with starter relay switch, and in parallel with the start button
Form the self-locking circuit of the start button.
2. mobile air conditioner unit according to claim 1, which is characterized in that also wrapped in the circuit of the mobile air conditioner unit
Transformer is included, the first phase of three-phase line and the input terminal of the second phase of the operation main circuit are separately connected the transformer
The common at the both ends of primary coil, first phase sequence relay connects after open type starter relay switchs described in connection
The normally opened contact of one end of the first secondary coil of transformer, first phase sequence relay connects the first contactor coil
With connected after the second contactor auxiliary contact other end of first secondary coil, first phase sequence relay it is normal
Closed contact also connects first secondary coil after connecting the second contactor coil and the first contactor auxiliary contact
The other end；The start button connect the second of the transformer with one end of the series circuit of the starter relay coil
One end of secondary coil, the other end of the series circuit connect the other end of the second subprime coil.
3. mobile air conditioner unit according to claim 1 or 2, which is characterized in that first power supply is for providing
220V alternating currents, second power supply is for providing 24V alternating currents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820190871.8U CN207967919U (en) | 2018-02-02 | 2018-02-02 | A kind of mobile air conditioner unit with misphase default-phase protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820190871.8U CN207967919U (en) | 2018-02-02 | 2018-02-02 | A kind of mobile air conditioner unit with misphase default-phase protection function |
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| Publication Number | Publication Date |
|---|---|
| CN207967919U true CN207967919U (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820190871.8U Active CN207967919U (en) | 2018-02-02 | 2018-02-02 | A kind of mobile air conditioner unit with misphase default-phase protection function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384711A (en) * | 2018-12-28 | 2020-07-07 | 江苏万帮德和新能源科技股份有限公司 | Phase-dislocation protection device based on charging pile system and use method thereof |
-
2018
- 2018-02-02 CN CN201820190871.8U patent/CN207967919U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384711A (en) * | 2018-12-28 | 2020-07-07 | 江苏万帮德和新能源科技股份有限公司 | Phase-dislocation protection device based on charging pile system and use method thereof |
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