CN220510819U - Water pump power supply switching device of air conditioning system - Google Patents
Water pump power supply switching device of air conditioning system Download PDFInfo
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- CN220510819U CN220510819U CN202322161461.4U CN202322161461U CN220510819U CN 220510819 U CN220510819 U CN 220510819U CN 202322161461 U CN202322161461 U CN 202322161461U CN 220510819 U CN220510819 U CN 220510819U
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- contactor
- water pump
- electrically connected
- power supply
- circuit breaker
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000004378 air conditioning Methods 0.000 title claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 2
- 102100026205 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma-1 Human genes 0.000 description 1
- 101000691599 Homo sapiens 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma-1 Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Abstract
The utility model relates to a water pump power supply switching device of an air conditioning system, which comprises a host switching variable frequency control cabinet, a first power supply power distribution cabinet and a second power supply power distribution cabinet; a first circuit breaker, a second circuit breaker, a first contactor, a second contactor, a third contactor, a first frequency converter, a second frequency converter and a PLC are arranged in the host switching frequency conversion control cabinet; the main power switch of the first power distribution cabinet is electrically connected with a first circuit breaker, and the output end of the first circuit breaker is electrically connected with a first contactor; the output end of the first contactor is electrically connected with the first frequency converter; the main power switch of the second power distribution cabinet is electrically connected with a second circuit breaker, the output end of the second circuit breaker is electrically connected with a second contactor, and the output end of the second contactor is electrically connected with a second frequency converter. Through the arrangement, when the water pump of the air conditioning system runs, sudden power failure occurs, redundant electric quantity of the power grid system can be automatically identified to serve as a standby power supply, and the automatic switching to the standby power supply to run after the power failure is realized.
Description
Technical Field
The utility model belongs to the technical field of air conditioner rooms, and particularly relates to a power supply switching device of a water pump of an air conditioning system.
Background
Two groups of water pump control cabinets are usually arranged in an existing air conditioner room so as to ensure the normal work of a water pump in the air conditioner room, the two groups of water pump control cabinets are usually powered by the same power supply, and when power failure occurs, the two groups of water pump control cabinets cannot be used normally, so that the water pump in the air conditioner room cannot work normally.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, provides a power supply switching device for a water pump of an air conditioning system, and solves the technical problems that the water pump cannot work normally due to power failure in an air conditioning machine room.
In order to solve the problems, the technical scheme of the utility model is as follows: a water pump power supply switching device of an air conditioning system comprises a host switching variable frequency control cabinet, a first power supply power distribution cabinet and a second power supply power distribution cabinet;
a first circuit breaker, a second circuit breaker, a first contactor, a second contactor, a third contactor, a first frequency converter, a second frequency converter and a PLC are arranged in the host switching frequency conversion control cabinet; the main power switch of the first power distribution cabinet is electrically connected with a first circuit breaker, and the output end of the first circuit breaker is electrically connected with a first contactor; the output end of the first contactor is electrically connected with the first frequency converter; the main power switch of the second power distribution cabinet is electrically connected with a second circuit breaker, the output end of the second circuit breaker is electrically connected with a second contactor, and the output end of the second contactor is electrically connected with a second frequency converter; the first frequency converter and the second frequency converter are electrically connected with a plurality of third contactors, and the third contactors are electrically connected with a plurality of loads in a one-to-one correspondence manner;
the first power distribution cabinet is electrically connected with the air conditioner host, and the second power distribution cabinet is electrically connected with the air conditioner standby; the air conditioner host and the air conditioner standby are electrically connected with the PLC.
Optionally, a miniature circuit breaker is arranged in the host switching variable frequency control cabinet, one end of the miniature circuit breaker is electrically connected with the PLC, and the other end of the miniature circuit breaker is electrically connected with the input end of the second contactor.
Optionally, the plurality of loads includes a chilled water pump, and a cooling tower motor.
Optionally, the third contactor connected with the chilled water pump is an 80A contactor, the third contactor connected with the cooling water pump is an 80A contactor, and the third contactor connected with the cooling tower motor is a 25A contactor.
Optionally, the first contactor and the second contactor are both 125A contactors.
Optionally, the external dimension of the cabinet body of the host switching variable frequency control cabinet is as follows: 800mm wide, 500mm deep and 1600mm high.
Optionally, the first circuit breaker and the second circuit breaker are each 160A circuit breakers.
Optionally, the first frequency converter and the second frequency converter are both 50kw frequency converters.
Optionally, the device further comprises a water pump power supply cabinet, wherein the water pump power supply cabinet is electrically connected with the host switching variable frequency control cabinet, and the host switching variable frequency control cabinet is electrically connected with a load.
Optionally, a water pump contactor is arranged in the water pump power supply cabinet and is electrically connected with the host switching variable frequency control cabinet
Compared with the prior art, the utility model has the beneficial effects that:
the power supply switching device for the water pump of the air conditioning system can automatically identify redundant electric quantity of the power grid system as a standby power supply after sudden power failure during operation of the water pump of the air conditioning system, realize automatic switching to the operation of the standby power supply after power failure, and ensure continuous operation of the water pump.
Drawings
FIG. 1 is a connection diagram of a power cabinet of a water pump of an air conditioning system in an embodiment;
fig. 2 is a connection diagram of a host switching variable frequency control cabinet and a power cabinet in an embodiment.
Reference numerals: 1. the host switches the variable frequency control cabinet; 11. a first circuit breaker; 12. a second circuit breaker; 13. a first contactor; 14. a second contactor; 15. a third contactor; 16. a first frequency converter; 17. a second frequency converter; 18. a PLC; 19. a miniature circuit breaker; 2. a first power distribution cabinet; 3. a second power distribution cabinet; 4. a water pump power supply cabinet; 41. a water pump contactor; 5. a load; 51. a cooling water pump; 52. a chilled water pump; 53. a cooling tower motor; 54. an air conditioner main unit; 55. an air conditioner.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
Examples: as shown in fig. 1 and 2, the present embodiment provides a power supply switching device for a water pump of an air conditioning system, which includes a main machine switching variable frequency control cabinet 1, a first power supply power distribution cabinet 2 and a second power supply power distribution cabinet 3; the main machine switching variable frequency control cabinet 1 is internally provided with a first breaker 11, a second breaker 12, a first contactor 13, a second contactor 14, a third contactor 15, a first frequency converter 16, a second frequency converter 17 and a PLC18; the main power switch of the first power distribution cabinet 2 is electrically connected with a first circuit breaker 11, and the output end of the first circuit breaker 11 is electrically connected with a first contactor 13; the output end of the first contactor 13 is electrically connected with a first frequency converter 16; the main power switch of the second power distribution cabinet 3 is electrically connected with a second circuit breaker 12, the output end of the second circuit breaker 12 is electrically connected with a second contactor 14, and the output end of the second contactor 14 is electrically connected with a second frequency converter 17; the first frequency converter 16 and the second frequency converter 17 are electrically connected with a plurality of third contactors 15, and the plurality of third contactors 15 are electrically connected with a plurality of loads 5 in a one-to-one correspondence manner; the first power distribution cabinet 2 is electrically connected with the air conditioner host 54, and the second power distribution cabinet 3 is electrically connected with the air conditioner standby 55; the air conditioner main unit 54 and the air conditioner standby unit 55 are electrically connected to the PLC 18.
Through the arrangement, the air conditioning system water pump power supply switching device can be realized, the redundant electric quantity of the power grid system can be automatically identified as the standby power supply after sudden power failure during operation of the air conditioning system water pump, the automatic switching to the standby power supply for operation after power failure is realized, the continuous operation of the water pump is ensured, the effectiveness of the power grid is fully utilized, the use efficiency is improved, and the construction cost is reduced.
Specifically, the intelligent air conditioner system further comprises a water pump power supply cabinet 4, wherein the water pump power supply cabinet 4 is electrically connected with the host switching variable frequency control cabinet 1, the host switching variable frequency control cabinet 1 is electrically connected with the load 5, when the high-power load 5 of the non-host in the air conditioning system runs (the host has the function of automatically switching the operation of the main and standby machines), after sudden power failure, the non-load 5 of the power distribution power supply of the host is automatically identified and automatically switched, and the function of autonomously switching the power supply and performing variable frequency operation after the power failure of the non-host electrical equipment in the system is realized.
Specifically, the water pump power cabinet 4 is internally provided with a water pump contactor 41, and the water pump contactor 41 is electrically connected with the host switching variable frequency control cabinet 1.
In the switching device for the water pump power supply of the air conditioning system in this embodiment, a miniature circuit breaker 19 is arranged in the main machine switching variable frequency control cabinet 1, one end of the miniature circuit breaker 19 is electrically connected with the PLC18, and the other end of the miniature circuit breaker 19 is electrically connected with the input end of the second contactor 14.
The water pump power supply switching device of the air conditioning system of the present embodiment includes a plurality of loads 5 including a chilled water pump 52, a cooling water pump 51 and a cooling tower motor 53.
In the water pump power switching device of the air conditioning system of the present embodiment, the third contactor 15 connected to the chilled water pump 52 is an 80A contactor, the third contactor 15 connected to the cooling water pump 51 is an 80A contactor, and the third contactor 15 connected to the cooling tower motor 53 is a 25A contactor.
In the power switching device of the water pump of the air conditioning system of the embodiment, the first contactor 13 and the second contactor 14 are 125A contactors.
The water pump power supply switching device of the air conditioning system of the embodiment, the cabinet body external dimension of the main machine switching variable frequency control cabinet 1 is as follows: 800mm wide, 500mm deep and 1600mm high.
In the power switching device for the water pump of the air conditioning system of the embodiment, the first breaker 11 and the second breaker 12 are both 160A breakers.
In the power supply switching device of the water pump of the air conditioning system of the embodiment, the first frequency converter 16 and the second frequency converter 17 are both 50kw frequency converters.
Specifically, the host switching variable frequency control cabinet 1 comprises a 160A breaker 2 table, a 125A contactor 2 table, a 50kw frequency converter 2 table, an 80A contactor 2 table, a PLC1 table and a 25A contactor 1 table. The first power distribution cabinet 2 is a No. 1 screw machine power distribution cabinet, and the second power distribution cabinet 3 is a No. 2 screw machine power distribution cabinet.
The two main circuit breakers respectively take power from the outlet ends of the main power switches of the first power distribution cabinet 2 and the second power distribution cabinet 3, as shown in fig. 2.
The switching logic of the air conditioning system water pump power supply switching device of this embodiment is:
1. when the water pump power supply cabinet 4 suddenly fails, a starting signal is taken from a main board of the unit to the PLC18 for logic judgment, when the PLC18 detects that signals of the air conditioner host 54 and the air conditioner standby 55 are in a disconnection state, the two power supply cabinets are not loaded 5, the host is in a shutdown state, the water pump does not need to operate and switch, and a PLC18 program does not operate.
2. When the air conditioner host 54 is detected to be powered on, the first power distribution cabinet 2 is provided with a load 5, the second power distribution cabinet 3 is not provided with the load 5, the PLC18 starts a program, the second contactor 14 is attracted, the first contactor 13 and the second contactor 14 are interlocked, meanwhile, the second frequency converter 17 is powered on, and the water pump or other loads 5 are automatically started and perform frequency conversion operation.
3. When the air conditioner standby machine 55 is detected to be turned on, the second power distribution cabinet 3 is provided with a load 5, the first power distribution cabinet 2 is not provided with the load 5, the PLC18 starts a program, the first contactor 13 is attracted, the first contactor 13 and the second contactor 14 are interlocked, meanwhile, the first frequency converter 16 is powered, and the water pump or other loads 5 are automatically started and perform frequency conversion operation.
4. When the power failure is switched, the water pump is operated according to a PLC18 power failure switching program, when the water pump power supply cabinet 4 is powered off, the water pump contactor 41 is opened, the electric interlocking is closed to the starting contactor, the water pump is switched to a power supply operated under no load 5, namely the first power supply power distribution cabinet 2 or the second power supply power distribution cabinet 3, the water pump is automatically started, after the water pump power supply cabinet 4 is powered on, the water pump contactor 41 is attracted, the electric interlocking is opened to start the contactor, a feedback signal is fed back to the PLC18 to open 125A main contactor, and a water pump starting command is automatically switched to a water pump common power supply.
When the system is debugged, the switching time is focused, the lowest frequency of the adjustable frequency converter is the highest, and the normal operation of the system is ensured without abnormal alarm.
Claims (10)
1. The power supply switching device of the air conditioning system water pump is characterized by comprising a host switching variable frequency control cabinet (1), a first power supply power distribution cabinet (2) and a second power supply power distribution cabinet (3);
a first circuit breaker (11), a second circuit breaker (12), a first contactor (13), a second contactor (14), a third contactor (15), a first frequency converter (16), a second frequency converter (17) and a PLC (18) are arranged in the host switching frequency conversion control cabinet (1); the main power switch of the first power distribution cabinet (2) is electrically connected with the first circuit breaker (11), and the output end of the first circuit breaker (11) is electrically connected with the first contactor (13); the output end of the first contactor (13) is electrically connected with the first frequency converter (16); the main power switch of the second power distribution cabinet (3) is electrically connected with a second circuit breaker (12), the output end of the second circuit breaker (12) is electrically connected with a second contactor (14), and the output end of the second contactor (14) is electrically connected with a second frequency converter (17); the first frequency converter (16) and the second frequency converter (17) are electrically connected with a plurality of third contactors (15), and the third contactors (15) are electrically connected with a plurality of loads (5) in a one-to-one correspondence manner;
the first power distribution cabinet (2) is electrically connected with the air conditioner host (54), and the second power distribution cabinet (3) is electrically connected with the air conditioner standby machine; the air conditioner host (54) and the air conditioner standby are electrically connected with the PLC (18).
2. The water pump power supply switching device of an air conditioning system according to claim 1, wherein a miniature circuit breaker (19) is arranged in the main machine switching variable frequency control cabinet (1), one end of the miniature circuit breaker (19) is electrically connected with the PLC (18), and the other end of the miniature circuit breaker (19) is electrically connected with the input end of the second contactor (14).
3. An air conditioning system water pump power switching device according to claim 1, characterized in that the number of loads (5) comprises a chilled water pump (52), a cooling water pump (51) and a cooling tower motor (53).
4. A water pump power switching device for an air conditioning system according to claim 3, wherein the third contactor (15) connected to the chilled water pump (52) is an 80A contactor, the third contactor (15) connected to the cooling water pump (51) is an 80A contactor, and the third contactor (15) connected to the cooling tower motor (53) is a 25A contactor.
5. The water pump power switching device of an air conditioning system according to claim 1, wherein the first contactor (13) and the second contactor (14) are both 125A contactors.
6. The power supply switching device for a water pump of an air conditioning system according to claim 1, wherein the cabinet body external dimension of the main machine switching variable frequency control cabinet (1) is: 800mm wide, 500mm deep and 1600mm high.
7. The water pump power switching device of an air conditioning system according to claim 1, wherein the first circuit breaker (11) and the second circuit breaker (12) are both 160A circuit breakers.
8. An air conditioning system water pump power switching device according to claim 1, characterized in that the first frequency converter (16) and the second frequency converter (17) are both 50kw frequency converters.
9. The water pump power supply switching device of an air conditioning system according to claim 1, further comprising a water pump power supply cabinet (4), wherein the water pump power supply cabinet (4) is electrically connected with a host switching variable frequency control cabinet (1), and the host switching variable frequency control cabinet (1) is electrically connected with a load (5).
10. The water pump power supply switching device of the air conditioning system according to claim 9, wherein a water pump contactor (41) is arranged in the water pump power supply cabinet (4), and the water pump contactor (41) is electrically connected with the host switching variable frequency control cabinet (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322161461.4U CN220510819U (en) | 2023-08-11 | 2023-08-11 | Water pump power supply switching device of air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322161461.4U CN220510819U (en) | 2023-08-11 | 2023-08-11 | Water pump power supply switching device of air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220510819U true CN220510819U (en) | 2024-02-20 |
Family
ID=89876964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322161461.4U Active CN220510819U (en) | 2023-08-11 | 2023-08-11 | Water pump power supply switching device of air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220510819U (en) |
-
2023
- 2023-08-11 CN CN202322161461.4U patent/CN220510819U/en active Active
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