Motor and circulating pump
By using specific connections at the motor interface, connection branches for the U-phase, V-phase, and W-phase windings are formed, solving the problem of the single operating mode of the circulating pump motor. This enables low-speed operation and flexible adjustment of the motor, reducing motor power and speed, and minimizing waste.
Patent Information
- Application Number
- CN202520005439.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-02
AI Technical Summary
In existing technologies, the motors in circulating pumps operate in a single mode, resulting in high power consumption and waste when operating at high speeds.
By specifically connecting the 27 interfaces of the motor to form connection branches for the U-phase, V-phase, and W-phase windings, the motor can operate at low speed, and the operating mode can be adjusted according to user needs.
This enables the motor to operate at low speed, reduces waste during the operation of the circulating pump, improves operational flexibility, and lowers the motor's rated power, speed, and current.
Smart Images
Figure CN223693845U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of electronics, and in particular, to a motor and a circulating pump. BACKGROUND
[0002] A motor is an electrical device that mainly converts electrical energy into mechanical energy. The motor is usually arranged in a circulating pump to enable the circulating pump to transport and circulate liquid. In the related art, the motor in the circulating pump has a single operation mode and a high operation power, which is prone to waste. SUMMARY
[0003] The purpose of the present disclosure is to provide a motor and a circulating pump to solve the technical problems existing in the related art.
[0004] To achieve the above purpose, the present disclosure provides a motor, comprising a U-phase winding, a V-phase winding, a W-phase winding, and 27 interfaces for external connection, wherein the first interface and the 27th interface are connected, the 9th interface and the 10th interface are connected, and the 18th interface and the 19th interface are connected;
[0005] The U-phase interface corresponding to the U-phase winding is connected to the first interface of the 27 interfaces, the third interface and the fourth interface of the 27 interfaces are connected, and the sixth interface and the seventh interface are connected to form a connection branch corresponding to the U-phase winding;
[0006] The V-phase interface corresponding to the V-phase winding is connected to the 10th interface of the 27 interfaces, the 12th interface and the 13th interface of the 27 interfaces are connected, and the 15th interface and the 16th interface are connected to form a connection branch corresponding to the V-phase winding;
[0007] The W-phase interface corresponding to the W-phase winding is connected to the 19th interface of the 27 interfaces, the 21st interface and the 22nd interface of the 27 interfaces are connected, and the 24th interface and the 25th interface are connected to form a connection branch corresponding to the W-phase winding.
[0008] Optionally, the motor has 108 slots, and each slot is embedded with a coil.
[0009] Optionally, in the U-phase winding, the U-phase interface is connected with a first interface, a 102nd coil, a first coil, a second coil, a third coil, an 11th coil, a 10th coil, a second interface, a 48th coil, a 57th coil, a 56th coil, a 55th coil, a 64th coil, a 65th coil, a third interface, a fourth interface, a 63rd coil, a 72nd coil, a 71st coil, a 79th coil, an 80th coil, an 88th coil, a fifth interface, a 9th coil, a 17th coil, an 18th coil, a 26th coil, a 25th coil, a 34th coil, a sixth interface, a seventh interface, a 32nd coil, a 33rd coil, a 42nd coil, a 41st coil, a 40th coil, a 49th coil, an 8th interface, an 87th coil, an 86th coil, a 94th coil, a 95th coil, a 96th coil, a 103rd coil, a 9th interface, in sequence.
[0010] Optionally, in the V-phase winding, the V-phase interface is connected with a 10th interface, a 104th coil, a 105th coil, a 6th coil, a 5th coil, a 4th coil, a 13th coil, an 11th interface, a 51st coil, a 50th coil, a 58th coil, a 59th coil, a 60th coil, a 67th coil, a 12th interface, a 13th interface, a 66th coil, a 73rd coil, a 74th coil, a 75th coil, an 83rd coil, an 82nd coil, a 14th interface, a 12th coil, a 21st coil, a 20th coil, a 19th coil, a 28th coil, a 29th coil, a 15th interface, a 16th interface, a 27th coil, a 36th coil, a 35th coil, a 43rd coil, a 44th coil, a 52nd coil, a 17th interface, an 81st coil, an 89th coil, a 90th coil, an 8th coil, a 97th coil, a 106th coil, an 18th interface, in sequence.
[0011] Optionally, in the W-phase winding, the W-phase interface is connected with a 19th interface, a 99th coil, a 108th coil, a 107th coil, a 7th coil, an 8th coil, a 16th coil, a 20th interface, a 45th coil, a 53rd coil, a 54th coil, a 62nd coil, a 61st coil, a 70th coil, a 21st interface, a 22nd interface, a 68th coil, a 69th coil, a 78th coil, a 77th coil, a 76th coil, an 85th coil, a 23rd interface, a 15th coil, a 14th coil, a 22nd coil, a 23rd coil, a 24th coil, a 31st coil, a 24th interface, a 25th interface, a 30th coil, a 37th coil, a 38th coil, a 39th coil, a 47th coil, a 46th coil, a 26th interface, an 84th coil, a 93rd coil, a 92nd coil, a 91st coil, a 100th coil, a 101st coil, a 27th interface, in sequence.
[0012] Optionally, the U-phase winding, the W-phase winding, and the V-phase winding are connected in a delta connection.
[0013] Optionally, the number of poles of the motor is 14 poles, and the number of pole pairs is 7 pairs.
[0014] Optionally, the rated power of the motor is 1000 KW.
[0015] Optionally, the rated speed of the motor is 425 r / min, and the rated current of the motor is 123 A.
[0016] In a second aspect, the disclosure also provides a circulating pump, which comprises the motor of any one of the first aspect of the disclosure.
[0017] Through the above technical solution, by connecting the first interface and the 27th interface in the 27 interfaces of the motor, and connecting the 9th interface and the 10th interface in the 27 interfaces, and connecting the 18th interface and the 19th interface in the 27 interfaces. And the U-phase interface corresponding to the U-phase winding is connected with the first interface in the 27 interfaces, the third interface and the fourth interface in the 27 interfaces are connected, and the sixth interface and the seventh interface are connected, to form the connection branch corresponding to the U-phase winding; the V-phase interface corresponding to the V-phase winding is connected with the 10th interface in the 27 interfaces, the 12th interface and the 13th interface in the 27 interfaces are connected, and the 15th interface and the 16th interface are connected, to form the connection branch corresponding to the V-phase winding, and the W-phase interface corresponding to the W-phase winding is connected with the 19th interface in the 27 interfaces, the 21st interface and the 22nd interface in the 27 interfaces are connected, and the 24th interface and the 25th interface are connected, to form the connection branch corresponding to the W-phase winding. The low-speed operation of the motor can be realized, and then the operation mode of the motor can be adjusted according to the user's demand, and energy saving can be realized.
[0018] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0019] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and together with the following specific embodiments, serve to explain the present disclosure but do not constitute a limitation thereof. In the drawings:
[0020] Figure 1 is a schematic diagram of motor wiring according to an exemplary embodiment of the present disclosure.
[0021] Figure 2 is a schematic diagram of motor coil wiring according to an exemplary embodiment of the present disclosure.
[0022] Figure 3 is a schematic diagram of motor coil wiring according to an exemplary embodiment of the present disclosure.
[0023] Figure 4 is a 2Y connection diagram according to an exemplary embodiment of the present disclosure.
[0024] Figure 5 is a corner connection diagram according to an exemplary embodiment of the present disclosure.
[0025] Figure 6 is a connection diagram of a motor in the related art in high speed operation. DETAILED DESCRIPTION
[0026] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.
[0027] The sea pump house is mainly used for pumping sea water. In the related art, four circulating pumps are arranged in the sea pump house, and by controlling the operation mode of the motor in the circulating pump, the process of pumping sea water can be realized.
[0028] However, the inventor found that when the motor is controlled by the method in the related art, it can only run at high speed, and the operation mode is single. When the motor of the circulating pump is in high speed operation, the circulating pump has a large flow after capacity increase, the flexibility of the operation mode is poor, and when the circulating pump is in the critical point of unit vacuum degree or desulfurization discharge, four circulating pumps are running, which will cause a certain waste.
[0029] Therefore, the present disclosure provides a motor and a circulating pump to solve the above technical problems in the related art.
[0030] As shown in Figure 1 , the motor connection diagram according to an exemplary embodiment of the present disclosure is shown, and Figure 1 refers to Figure 1 , which includes a U-phase winding, a V-phase winding, a W-phase winding, and 27 interfaces for external connection, the first interface and the 27th interface in the 27 interfaces are connected, and the 9th interface and the 10th interface in the 27 interfaces are connected, the 18th interface and the 19th interface in the 27 interfaces are connected;
[0031] The U-phase interface corresponding to the U-phase winding is connected with the first interface in the 27 interfaces, the third interface and the fourth interface in the 27 interfaces are connected, and the sixth interface and the seventh interface are connected to form a connection branch corresponding to the U-phase winding;
[0032] The V-phase interface corresponding to the V-phase winding is connected with the 10th interface in the 27 interfaces, the 12th interface and the 13th interface in the 27 interfaces are connected, and the 15th interface and the 16th interface are connected to form a connection branch corresponding to the V-phase winding;
[0033] The W-phase interface corresponding to the W-phase winding is connected with the 19th interface of the 27 interfaces, the 21st interface and the 22nd interface of the 27 interfaces are connected, and the 24th interface and the 25th interface are connected to form a connection branch corresponding to the W-phase winding.
[0034] Through the above technical solution, the 1st interface and the 27th interface of the 27 interfaces of the motor are connected, and the 9th interface and the 10th interface of the 27 interfaces are connected, and the 18th interface and the 19th interface of the 27 interfaces are connected. The U-phase interface corresponding to the U-phase winding is connected with the 1st interface of the 27 interfaces, the 3rd interface and the 4th interface of the 27 interfaces are connected, and the 6th interface and the 7th interface are connected to form a connection branch corresponding to the U-phase winding; the V-phase interface corresponding to the V-phase winding is connected with the 10th interface of the 27 interfaces, the 12th interface and the 13th interface of the 27 interfaces are connected, and the 15th interface and the 16th interface are connected to form a connection branch corresponding to the V-phase winding, and the W-phase interface corresponding to the W-phase winding is connected with the 19th interface of the 27 interfaces, the 21st interface and the 22nd interface of the 27 interfaces are connected, and the 24th interface and the 25th interface are connected to form a connection branch corresponding to the W-phase winding. The low-speed operation of the motor can be realized, and then the operation mode of the motor can be adjusted according to the user demand, and energy saving can be realized.
[0035] In order for those skilled in the art to better understand the motor provided by the present disclosure, the above connection lines are described in detail as follows.
[0036] For example, the U-phase winding, the V-phase winding and the W-phase winding are three independent windings in the motor, which are mainly the core part of the motor stator. In the three windings of the U-phase winding, the V-phase winding and the W-phase winding, the same structure coil is embedded, and is connected by means of angular connection or 2Y connection. In the embodiment, the motor further includes 27 external connection interfaces, each of which can be used to connect the corresponding wire to realize the operation mode of the motor.
[0037] In the embodiment of the present disclosure, as Figure 1As shown, among the 27 interfaces, the 1st interface is connected with the 27th interface, the 9th interface is connected with the 10th interface, and the 18th interface is connected with the 19th interface, which can be used to change the operation mode of the motor. Then the U-phase interface corresponding to the U-phase winding can be connected with the 1st interface, the 3rd interface with the 4th interface, and the 6th interface with the 7th interface to form a connection branch corresponding to the U-phase winding. The V-phase interface corresponding to the V-phase winding is connected with the 10th interface, the 12th interface with the 13th interface, and the 15th interface with the 16th interface to form a connection branch corresponding to the V-phase winding. The W-phase interface corresponding to the W-phase winding is connected with the 19th interface among the 27 interfaces, the 21st interface among the 27 interfaces is connected with the 22nd interface and the 24th interface with the 25th interface to form a connection branch corresponding to the W-phase winding. After connecting these interfaces, the motor can realize low-speed operation, and then four circulating pumps can be controlled at different operating speeds to meet the needs of users.
[0038] By connecting different interfaces, the motor can realize low-speed operation, thereby improving the flexibility of motor operation and reducing waste caused by circulating pump operation.
[0039] In a possible manner, the slot position of the motor is 108 slots, and a coil is embedded in each slot position.
[0040] It should be understood that the slot position of the motor can be a slot position in a motor stator core. The slot position in the stator core can be 24 slots, 105 slots, 108 slots, etc. In the embodiments of the present disclosure, the motor slot position is set to 108 slots, and a winding coil is embedded in each slot position, thereby the coils corresponding to the slot positions can be connected to realize low-speed operation of the motor.
[0041] In a possible manner, in the U-phase winding, the U-phase interfaces are sequentially connected with the 1st interface, the 102nd coil, the 1st coil, the 2nd coil, the 3rd coil, the 11th coil, the 10th coil, the 2nd interface, the 48th coil, the 57th coil, the 56th coil, the 55th coil, the 64th coil, the 65th coil, the 3rd interface, the 4th interface, the 63rd coil, the 72nd coil, the 71st coil, the 79th coil, the 80th coil, the 88th coil, the 5th interface, the 9th coil, the 17th coil, the 18th coil, the 26th coil, the 25th coil, the 34th coil, the 6th interface, the 7th interface, the 32nd coil, the 33rd coil, the 42nd coil, the 41st coil, the 40th coil, the 49th coil, the 8th interface, the 87th coil, the 86th coil, the 94th coil, the 95th coil, the 96th coil, the 103rd coil, and the 9th interface.
[0042] It should be understood that in the U-phase winding, the specific connection is as follows Figure 2 and Figure 3As shown in Figure 2 , the numbers in the circle can correspond to the ports corresponding to each coil, and the numbers outside the circle can represent the corresponding interfaces of the 27 interfaces included in the motor. Then the U-phase interface can be connected to the 1st interface, the 102, 1, 2, 3, 11, 10 coils, the 2nd interface, the 48, 57, 56, 55, 64, 65 coils, the 3rd and 4th interfaces, the 63, 72, 71, 79, 80, 88 coils, the 5th interface, the 9, 17, 18, 26, 25, 34 coils, the 6th and 7th interfaces, the 32, 33, 42, 41, 40, 49 coils, the 8th interface, the 87, 86, 94, 95, 96, 103 coils, and the 9th interface.
[0043] In a possible manner, in the V-phase winding, the V-phase interface is connected to the 10th interface, the 104 coil, the 105 coil, the 6th coil, the 5th coil, the 4th coil, the 13th coil, the 11th interface, the 51st coil, the 50th coil, the 58th coil, the 59th coil, the 60th coil, the 67th coil, the 12th interface, the 13th interface, the 66th coil, the 73rd coil, the 74th coil, the 75th coil, the 83rd coil, the 82nd coil, the 14th interface, the 12th coil, the 21st coil, the 20th coil, the 19th coil, the 28th coil, the 29th coil, the 15th interface, the 16th interface, the 27th coil, the 36th coil, the 35th coil, the 43rd coil, the 44th coil, the 52nd coil, the 17th interface, the 81st coil, the 89th coil, the 90th coil, the 8th coil, the 97th coil, the 106th coil, and the 18th interface.
[0044] It should be understood that in the V-phase winding, the specific connection is as shown in Figure 2 and Figure 3 , in Figure 2 , the numbers in the circle can correspond to the ports corresponding to each coil, and the numbers outside the circle can represent the corresponding interfaces of the 27 interfaces included in the motor. Then the V-phase interface is connected to the 10th interface, the 104, 105, 6, 5, 4, 13 coils, the 11th interface, the 51st, 50th, 58th, 59th, 60th, 67th coils, the 12th and 13th interfaces, the 66th, 73rd, 74th, 75th, 83rd, 82nd coils, the 14th interface, the 12th, 21st, 20th, 19th, 28th, 29th coils, the 15th and 16th interfaces, the 27th, 36th, 35th, 43rd, 44th, 52nd coils, the 17th interface, the 81st, 89th, 90th, 8th, 97th, 106th coils, and the 18th interface.
[0045] In one possible configuration, in the W-phase winding, the W-phase interface is sequentially connected to the 19th interface, the 99th coil, the 108th coil, the 107th coil, the 7th coil, the 8th coil, the 16th coil, the 20th interface, the 45th coil, the 53rd coil, the 54th coil, the 62nd coil, the 61st coil, the 70th coil, the 21st interface, the 22nd interface, the 68th coil, the 69th coil, the 78th coil, the 77th coil, the 76th coil, the 85th coil, the 23rd interface, the 15th coil, the 14th coil, the 22nd coil, the 23rd coil, the 24th coil, the 31st coil, the 24th interface, the 25th interface, the 30th coil, the 37th coil, the 38th coil, the 39th coil, the 47th coil, the 46th coil, the 26th interface, the 84th coil, the 93rd coil, the 92nd coil, the 91st coil, the 100th coil, the 101st coil, and the 27th interface.
[0046] It should be understood that in the V-phase winding, the specific connections are as follows: Figure 2 and Figure 3 As shown, in Figure 2 In the diagram, the numbers inside the circles represent the ports corresponding to each coil, while the numbers outside the circles represent the ports among the 27 interfaces included in the motor. Therefore, in the W-phase winding, the W-phase interfaces are sequentially connected to interface 19, coils 99, 108, 107, 7, 8, and 16, interface 20, coils 45, 53, 54, 62, 61, and 70, interfaces 21 and 22, coils 68, 69, 78, 77, 76, and 85, interface 23, coils 15, 14, 22, 23, 24, and 31, interfaces 24 and 25, coils 30, 37, 38, 39, 47, and 46, interface 26, coils 84, 93, 92, 91, 100, and 101, and interface 27.
[0047] By using the aforementioned connection method between the motor interface and the coil, low-speed operation of the motor can be achieved, thereby reducing waste caused by the operation of the circulating pump. Furthermore, through the above-described wiring method of connecting interfaces to interfaces, interfaces to coils, and coils to coils, the rated power of the motor can be lower than its rated power at high speed, the rated speed of the motor can be lower than its rated speed at high speed, and the rated current of the motor can be lower than its rated current at high speed. For example, the motor's rated power is 1000KW, its rated speed is 425r / min, its rated current is 123A, its rated voltage is 6KV, and it has 14 poles and 7 pole pairs. This disclosure does not specifically limit the specific details of these features.
[0048] In one possible configuration, the U-phase winding, the W-phase winding, and the V-phase winding are connected in a delta configuration.
[0049] It should be understood that the winding connection mode of the motor includes 2Y connection and delta connection. Figure 4 As shown in FIG. 2, the 2Y connection can be a connection mode in which each winding of the motor is divided into two parts and connected to different phase lines. Figure 5 As shown in FIG. 3, the delta connection can be a connection mode in which each winding of the motor is connected to every other winding of the motor to form a closed triangle. In the embodiments of the present disclosure, the three-phase winding is connected in the delta connection mode, so that the motor can run at low speed. The embodiments of the present disclosure are not limited in this regard.
[0050] In another possible mode, the motor can also be switched between high-speed running and low-speed running. Specifically, when the motor runs at high speed, the following connections are made among the 27 interfaces: the 25th, 14th and 27th interfaces are connected, the 24th, 11th and 22nd interfaces are connected, the 4th, 20th and 6th interfaces are connected, the 5th, 16th and 18th interfaces are connected, the 7th, 23rd and 9th interfaces are connected, the 2nd, 15th and 13th interfaces are connected, the 8th, 17th and 26th interfaces are connected, the U-phase interface is sequentially connected to the 1st and 3rd interfaces, the W-phase interface is sequentially connected to the 19th and 21st interfaces, and the V-phase interface is sequentially connected to the 10th and 12th interfaces. The specific connection diagram is shown in FIG. 4. Figure 4 Figure 6 When the motor is connected through the above interfaces, high-speed running can be achieved.
[0051] Through the above technical solution, the connection between the 27 interfaces of the motor can be changed according to user needs, so that the motor can be switched between high-speed running and low-speed running. Thus, the waste generated by the circulating pump during operation can be reduced.
[0052] Through the above technical solution, after the motor is reconnected, the power of the motor can be reduced by 600 kW, 14400 kW of electricity can be saved per day, and 432000 kW of electricity can be saved per month. Thus, the power generation cost can be saved, and the low-speed running of the motor can be achieved. In addition, the running mode of the motor can be adjusted according to user needs, so that energy saving can be achieved.
[0053] Based on the same concept, the embodiments also disclose a circulating pump, which comprises the motor disclosed in the embodiments.
[0054] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
[0055] It should be further noted that various specific technical features described in the above specific embodiments can be combined in any suitable manner, and the disclosure will not be repeated here for various possible combinations.
[0056] In addition, various different embodiments of the disclosure can also be combined with each other as long as they do not contradict the idea of the disclosure, and they should also be considered as disclosed by the disclosure.
Claims
1. An electric machine characterized in that, The U-phase winding, the V-phase winding, the W-phase winding and 27 interfaces for external connection are included, the first interface and the 27th interface of the 27 interfaces are connected, the 9th interface and the 10th interface of the 27 interfaces are connected, and the 18th interface and the 19th interface of the 27 interfaces are connected; The U-phase interface corresponding to the U-phase winding is connected with the first interface of the 27 interfaces, the third interface and the fourth interface of the 27 interfaces are connected, and the sixth interface and the seventh interface of the 27 interfaces are connected to form a connection branch corresponding to the U-phase winding; The V-phase interface corresponding to the V-phase winding is connected with the 10th interface of the 27 interfaces, the 12th interface and the 13th interface of the 27 interfaces are connected, and the 15th interface and the 16th interface of the 27 interfaces are connected to form a connection branch corresponding to the V-phase winding; The W-phase interface corresponding to the W-phase winding is connected with the 19th interface of the 27 interfaces, the 21st interface and the 22nd interface of the 27 interfaces are connected, and the 24th interface and the 25th interface of the 27 interfaces are connected to form a connection branch corresponding to the W-phase winding.
2. The electric machine of claim 1, wherein, The slot position of the motor is 108 slots, and each slot position is embedded with a coil.
3. The electric machine of claim 2, wherein, In the U-phase winding, the U-phase interface is connected with the first interface, the 102nd coil, the first coil, the second coil, the third coil, the 11th coil, the 10th coil, the second interface, the 48th coil, the 57th coil, the 56th coil, the 55th coil, the 64th coil, the 65th coil, the third interface, the fourth interface, the 63rd coil, the 72nd coil, the 71st coil, the 79th coil, the 80th coil, the 88th coil, the fifth interface, the 9th coil, the 17th coil, the 18th coil, the 26th coil, the 25th coil, the 34th coil, the sixth interface, the seventh interface, the 32nd coil, the 33rd coil, the 42nd coil, the 41st coil, the 40th coil, the 49th coil, the eighth interface, the 87th coil, the 86th coil, the 94th coil, the 95th coil, the 96th coil, the 103rd coil, the ninth interface.
4. The electric machine of claim 2, wherein, In the V-phase winding, the V-phase interface is connected with the 10th interface, the 104th coil, the 105th coil, the sixth coil, the fifth coil, the fourth coil, the 13th coil, the 11th interface, the 51st coil, the 50th coil, the 58th coil, the 59th coil, the 60th coil, the 67th coil, the 12th interface, the 13th interface, the 66th coil, the 73rd coil, the 74th coil, the 75th coil, the 83rd coil, the 82nd coil, the 14th interface, the 12th coil, the 21st coil, the 20th coil, the 19th coil, the 28th coil, the 29th coil, the 15th interface, the 16th interface, the 27th coil, the 36th coil, the 35th coil, the 43rd coil, the 44th coil, the 52nd coil, the 17th interface, the 81st coil, the 89th coil, the 90th coil, the eighth coil, the 97th coil, the 106th coil, the 18th interface.
5. The electric machine of claim 2, wherein, In the W-phase winding, the W-phase interface is connected with the 19th interface, the 99th coil, the 108th coil, the 107th coil, the 7th coil, the 8th coil, the 16th coil, the 20th interface, the 45th coil, the 53rd coil, the 54th coil, the 62nd coil, the 61st coil, the 70th coil, the 21st interface, the 22nd interface, the 68th coil, the 69th coil, the 78th coil, the 77th coil, the 76th coil, the 85th coil, the 23rd interface, the 15th coil, the 14th coil, the 22nd coil, the 23rd coil, the 24th coil, the 31st coil, the 24th interface, the 25th interface, the 30th coil, the 37th coil, the 38th coil, the 39th coil, the 47th coil, the 46th coil, the 26th interface, the 84th coil, the 93rd coil, the 92nd coil, the 91st coil, the 100th coil, the 101st coil and the 27th interface in sequence.
6. The electric machine of any of claims 1-5, wherein, The connection mode of the U-phase winding, the W-phase winding and the V-phase winding is angular connection.
7. The electric machine of any of claims 1-5, wherein, The number of poles of the motor is 14 poles, and the number of pole pairs is 7 pairs.
8. The electric machine of any of claims 1-5, wherein, The rated power of the motor is 1000KW.
9. The electric machine of any of claims 1-5, wherein, The rated rotating speed of the motor is 425r / min, and the rated current of the motor is 123A.
10. A circulation pump characterized by, The circulating pump comprises the motor as claimed in any one of claims 1-9.