Electromagnetic pump capable of accurately controlling temperature of outer stator core

Abstract

The utility model discloses an electromagnetic pump capable of accurately controlling the temperature of outer stator iron cores, which relates to the technical field of electromagnetic pumps and comprises a shell, a plurality of outer stator iron cores are arranged in the shell and are uniformly distributed along the radial direction of the electromagnetic pump, the outer stator iron cores are arranged in a zigzag shape, and the outer stator iron cores are arranged in the shell. A containing groove is formed between every two adjacent sawteeth. And each outer stator iron core is correspondingly provided with a cooling pipeline, and the cooling pipeline is used for cooling the corresponding outer stator iron core. The electromagnetic pump solves the technical problem that in the prior art, the temperature of the outer stator iron core cannot be accurately controlled, and the electromagnetic pump is high in transmission efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic pumps, and particularly relates to an electromagnetic pump capable of accurately controlling the temperature of an outer stator core. Background Art

[0002] In the prior art, in order to solve the problem of extremely low efficiency of electromagnetic pumps, Patent CN202311588280.8, an electromagnetic pump assembly core, proposed an inner core structure using grain-oriented silicon steel sheets, which improved the magnetic permeability of the core and reduced iron loss, thereby improving the efficiency of the electromagnetic pump. However, due to the material properties of the grain-oriented silicon steel sheets, it is necessary to cool down the outer stator core made of the grain-oriented silicon steel sheet material to ensure its working efficiency. However, in the current prior art, only cooling measures in a broad sense are proposed, and the concept of precise cooling and related technical solutions to solve the problems are not proposed. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the technical problem that in the prior art, the temperature of the outer stator core cannot be accurately controlled to improve the magnetic permeability of the outer stator core and further improve the transmission efficiency of the electromagnetic pump. The utility model provides the following technical solutions:

[0004] An electromagnetic pump capable of accurately controlling the temperature of an outer stator core includes a housing. Inside the housing, several outer stator cores are provided. The outer stator cores are evenly distributed along the radial direction of the electromagnetic pump. The outer stator cores are arranged in a serrated shape, and accommodation grooves are formed between adjacent two serrations; a cooling pipeline is correspondingly arranged for each outer stator core, and the cooling pipeline is used to cool down the corresponding outer stator core.

[0005] An electric control valve is provided at the inlet end of the cooling pipeline.

[0006] A thermocouple is provided near each outer stator core, and the thermocouple is close to the inlet end of the electromagnetic pump.

[0007] Each cooling pipeline passes through all the accommodation grooves of the corresponding outer stator core one by one.

[0008] Each cooling pipeline is connected to the main pipeline in a parallel manner to form a closed loop, and a third circulation pump is installed on the main pipeline.

[0009] Half of the cooling pipelines are connected to the first circulation pipe in a parallel manner to form a closed loop, and a first circulation pump is installed on the first circulation pipe; the other half of the cooling pipelines are connected to the second circulation pipe in a parallel manner to form a closed loop, and a second circulation pump is installed on the second circulation pipe.

[0010] Inside the housing, there are also an inner stator core, a first heat insulation layer, a first stainless steel pipe, a second stainless steel pipe, a second heat insulation layer and a winding. The inner stator core, the first heat insulation layer, the first stainless steel pipe, the second stainless steel pipe and the second heat insulation layer are coaxially arranged in sequence along the radial direction of the electromagnetic pump. The winding is wound around the outer wall of the second heat insulation layer. Among them, the first stainless steel pipe and the second stainless steel pipe are arranged at intervals, and a pump groove for fluid to pass through is formed between the first stainless steel pipe and the second stainless steel pipe. The outer stator core is arranged on the outer periphery of the second heat insulation layer. The winding is exactly placed in the corresponding accommodation groove of the outer stator core, and the cooling pipeline is located between the second heat insulation layer and the winding.

[0011] The described electric control valve is controlled by the PID method.

[0012] The outer stator core is formed by stacking grain-oriented silicon steel sheets, and the rolling direction of the grain-oriented silicon steel sheets is the same as the radial direction of the electromagnetic pump.

[0013] Support seats are provided at both ends of the outside of the housing.

[0014] Beneficial effects:

[0015] The technical solution provided by the present invention realizes the individual control of the temperature of each outer stator core by equipping a cooling pipeline for the outer stator core, thereby realizing the precise temperature control of the outer stator core. At the same time, an outer stator core made of grain-oriented silicon steel sheets is selected, and the temperature of the outer stator core made of grain-oriented silicon steel sheets is controlled below 100°C, improving the transportation efficiency of the electromagnetic pump. And this electromagnetic pump can transport high-temperature liquid metal. The utility model further solves the technical problem of low efficiency of electromagnetic pumps in the prior art, realizes the individual and precise control of the temperature of each outer stator core, and further improves the transportation efficiency of the electromagnetic pump. Description of the drawings

[0016] Figure 1 It is a schematic top cross-sectional structure diagram of the present utility model;

[0017] Figure 2 It is a schematic top structure diagram of the outer stator core and the cooling pipeline;

[0018] Figure 3 It is a schematic front structure diagram of the outer stator core and the cooling pipeline;

[0019] Figure 4 It is a schematic structural diagram of an embodiment of the present utility model

[0020] Figure 5 It is a schematic structural diagram of another embodiment of the present utility model.

[0021] Wherein: 1. housing, 2. outer stator core, 3. receiving groove, 4. cooling pipeline, 5. electric control valve, 6. main pipeline, 7. third circulation pump, 8. first circulation pipe, 9. second circulation pipe, 10. first circulation pump, 11. second circulation pump, 12. inner stator core, 13. first heat insulation layer, 14. first stainless steel pipe, 15. second stainless steel pipe, 16. second heat insulation layer, 17. winding, 18. pump groove, 19. support seat. Detailed implementation mode

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention claimed, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0024] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0025] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present invention is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0026] Refer to Figures 1 to 5, An electromagnetic pump capable of precisely controlling the temperature of the outer stator core 2, characterized in that it includes a housing 1, and several outer stator cores 2 are arranged inside the housing 1. The outer stator cores 2 are evenly distributed along the radial direction of the electromagnetic pump. The outer stator cores 2 are arranged in a serrated shape, and accommodation grooves 3 are formed between adjacent serrations; a cooling pipeline 4 is correspondingly arranged for each outer stator core 2, and the cooling pipeline 4 is used to cool the corresponding outer stator core 2. The cooling pipeline 4 is connected to a cooling circulation system, and cooling liquid circulates inside to achieve cooling circulation. During the use of the electromagnetic pump, due to reasons such as the instability and fluctuation differences of the liquid metal liquid transported, the temperature of each outer stator core 2 is inconsistent after working for a period of time. In the present utility model, by designing that each cooling pipeline 4 cools one outer stator core 2 correspondingly, precise temperature control of each outer stator core 2 is achieved, energy waste is reduced, and thus the overall efficiency of the electromagnetic pump is improved.

[0027] An electric control valve 5 is provided at the inlet end of the cooling pipeline 4. The electric control valve 5 is used to control the flow rate of each cooling pipeline 4.

[0028] A thermocouple is provided near each outer stator core 2, and the thermocouple is close to the inlet end of the electromagnetic pump. The thermocouple is used to detect the temperature near the outer stator core 2. According to the temperature detected by the thermocouple, the flow rate of each cooling pipeline 4 is controlled in real time through the electric control valve 5 to achieve precise temperature control of each outer stator core 2, thereby saving energy efficiency and improving the efficiency of the electromagnetic pump.

[0029] Refer to Figure 2 and Figure 3 , In an embodiment of the present utility model, each cooling pipeline 4 passes through all the accommodation grooves 3 of the corresponding outer stator core 2 one by one. This design enables the cooling pipeline 4 to have the largest contact area with the outer stator core 2, and the cooling and temperature reduction effect is better.

[0030] Refer to Figure 4, In an embodiment of the present utility model, each of the cooling pipelines 4 is connected to the main pipeline 6 in parallel to form a closed-loop circuit, and a third circulation pump 7 is installed on the main pipeline 6. The main pipeline 6 is used to converge each cooling pipeline 4 and collect them into the main pipeline 6; the circulation pump enables the cooling liquid in the cooling pipeline 4 to circulate. The working principle of this embodiment is as follows: When the cooling liquid in the cooling pipeline 4 flows through the outer stator core 2, heat exchange occurs between the outer stator core 2 and the cooling liquid in the cooling pipeline 4, taking away the heat of the outer stator core 2 and achieving the cooling of the outer stator core 2; then the cooling liquid circulates in the pipeline under the action of the circulation pump. After the cooling liquid converges into the main pipeline 6, heat exchange occurs between the cooling liquid and the air, and the air takes away the heat of the cooling liquid, reducing the temperature of the cooling liquid, and then undergoing reciprocating circulation to achieve cyclic cooling. Further, a heat exchanger can also be installed on the main pipeline 6 to enable heat exchange between the cooling liquid and the heat exchanger.

[0031] Refer to Figure 5 , In an embodiment of the present utility model, half of the cooling pipelines 4 are connected to the first circulation pipe 8 in parallel to form a closed-loop circuit, and a first circulation pump 10 is installed on the first circulation pipe 8; the other half of the cooling pipelines 4 are connected to the second circulation pipe 9 in parallel to form a closed-loop circuit, and a second circulation pump 11 is installed on the second circulation pipe 9. In this embodiment, this number of cooling pipelines 4 converge into the first circulation pipe 8 to form the first circulation pipe 8, and the other half of the cooling pipelines 4 converge into the second circulation pipe 9 to form the second circulation pipe 9. The working principle of this embodiment is as follows: When the cooling liquid in the cooling pipeline 4 flows through the outer stator core 2, heat exchange occurs between the outer stator core 2 and the cooling liquid in the cooling pipeline 4, taking away the heat of the outer stator core 2 and achieving the cooling of the outer stator core 2; then the cooling liquid circulates in the pipeline under the action of the first circulation pump 10 and the second circulation pump 11. After the cooling liquid converges into the first circulation pipe 8 and the second circulation pipe 9, heat exchange occurs between the cooling liquid and the air, and the air takes away the heat of the cooling liquid, reducing the temperature of the cooling liquid, and then undergoing reciprocating circulation to achieve cyclic cooling. Further, heat exchangers can also be installed on the first circulation pipe 8 and the second circulation pipe 9 to enable heat exchange between the cooling liquid and the heat exchangers.

[0032] Refer to Figure 1, Further, inside the housing 1, there are also an inner stator core 12, a first heat insulation layer 13, a first stainless steel pipe 14, a second stainless steel pipe 15, a second heat insulation layer 16, and a winding 17. The inner stator core 12, the first heat insulation layer 13, the first stainless steel pipe 14, the second stainless steel pipe 15, and the second heat insulation layer 16 are coaxially arranged in sequence along the radial direction of the electromagnetic pump. The winding 17 is wound around the outer wall of the second heat insulation layer 16. Among them, the first stainless steel pipe 14 and the second stainless steel pipe 15 are arranged at intervals, and a pump groove 18 for fluid to pass through is formed between the first stainless steel pipe 14 and the second stainless steel pipe 15. The outer stator core 2 is arranged on the outer periphery of the second heat insulation layer 16. The winding 17 is exactly placed in the corresponding accommodation groove 3 of the outer stator core 2, and the cooling pipeline 4 is located between the second heat insulation layer 16 and the winding 17. This design can make the cooling pipeline 4 contact the outer stator core 2 and the winding 17, which can not only cool down the outer stator core 2, but also cool the winding 17, further improving the transportation efficiency of the electromagnetic pump. At the same time, by adding the first heat insulation layer 13 and the second heat insulation layer 16, the electromagnetic pump can realize the transportation of high-temperature liquid metal.

[0033] The electric control valve 5 is controlled by the PID method.

[0034] Preferably, the outer stator core 2 is laminated by grain-oriented silicon steel sheets, and the rolling direction of the grain-oriented silicon steel sheets is the radial direction of the electromagnetic pump. The outer stator core 2 laminated by grain-oriented silicon steel sheets can effectively improve the magnetic permeability of the outer stator core 2, reduce the iron loss, and thus improve the efficiency of the electromagnetic pump. However, the temperature of the outer stator core 2 laminated by grain-oriented silicon steel sheets needs to be controlled below 100 °C to ensure the best efficiency of the electromagnetic pump. The outer stator core 2 laminated by grain-oriented silicon steel sheets, combined with the cooling pipeline 4 for cooling the outer stator core 2, can not only ensure that the temperature of the outer stator core 2 is controlled below 100 °C, but also can accurately control the temperature of each outer stator core 2 according to the different temperatures of the outer stator core 2, further improving the working efficiency of the electromagnetic pump and saving energy.

[0035] Support seats 19 are provided at both ends of the outside of the housing 1, and the support seats 19 are used to support the electromagnetic pump housing 1.

[0036] The working principle of the present utility model is as follows: When the thermocouple detects the temperature of the outer stator core 2, the control system adjusts the electric control valve 5 according to the temperature detected by the thermocouple to control the flow rate of each cooling pipeline 4. When the cooling liquid flowing through the cooling pipeline 4 exchanges heat with the outer stator core 2 as it passes through the outer stator core 2, the heat of the outer stator core 2 is taken away to achieve the temperature reduction of the outer stator core 2. Then, the cooling liquid circulates in the pipeline under the action of the circulation pump. After the cooling liquid converges into the main pipeline 6, the first circulation pipe 8, or the second circulation pipe 9, the cooling liquid exchanges heat with the air, and the air takes away the heat of the cooling liquid to lower the temperature of the cooling liquid, and then the cycle repeats to achieve cyclic temperature reduction.

[0037] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. An electromagnetic pump capable of accurately controlling the temperature of an outer stator core, characterized in that: It comprises a shell, inside which a plurality of outer stator cores are arranged, the outer stator cores are evenly distributed along the radial direction of the electromagnetic pump, the outer stator cores are arranged in a sawtooth shape, and a receiving groove is formed between two adjacent sawteeth; each of the outer stator cores is correspondingly provided with a cooling pipeline, and the cooling pipeline is used to cool the corresponding outer stator core.

2. An electromagnetic pump capable of accurately controlling the temperature of an outer stator core as claimed in claim 1, characterized in that: An electric regulating valve is provided at the inlet end of the cooling pipeline.

3. An electromagnetic pump capable of accurately controlling the temperature of an outer stator core as claimed in claim 1, characterized in that: A thermocouple is arranged near each outer stator core, and the thermocouple is close to the inlet end of the electromagnetic pump.

4. An electromagnetic pump capable of accurately controlling the temperature of an outer stator core as claimed in claim 1, characterized in that: Each of the cooling pipelines passes through all the receiving slots of the corresponding outer stator core one by one.

5. The electromagnetic pump capable of accurately controlling the temperature of the outer stator core as claimed in claim 1, characterized in that: Each of the cooling pipelines is connected to the main pipeline in parallel to form a closed loop, and a third circulation pump is installed on the main pipeline.

6. An electromagnetic pump capable of accurately controlling the temperature of an outer stator core as claimed in claim 1, characterized in that: Half of the cooling pipes are connected in parallel with the first circulation pipe to form a closed loop, and a first circulation pump is installed on the first circulation pipe; the other half of the cooling pipes are connected in parallel with the second circulation pipe to form a closed loop, and a second circulation pump is installed on the second circulation pipe.

7. An electromagnetic pump capable of accurately controlling the temperature of an outer stator core as claimed in claim 1, characterized in that: Inside the shell, it also includes an inner stator core, a first thermal insulation layer, a first stainless steel tube, a second stainless steel tube, a second thermal insulation layer and a winding. The inner stator core, the first thermal insulation layer, the first stainless steel tube, the second stainless steel tube and the second thermal insulation layer are coaxially arranged in sequence along the radial direction of the electromagnetic pump, and the winding is wound on the outer wall of the second thermal insulation layer; wherein the first stainless steel tube and the second stainless steel tube are arranged at intervals and a pump groove for accommodating the passage of fluid is formed between the first stainless steel tube and the second stainless steel tube; the outer stator core is arranged on the outer periphery of the second thermal insulation layer, the winding is just placed in the accommodating groove corresponding to the outer stator core, and the cooling pipeline is located between the second thermal insulation layer and the winding.

8. An electromagnetic pump capable of accurately controlling the temperature of an outer stator core as claimed in claim 2, characterized in that: The electric regulating valve is controlled by PID method.

9. An electromagnetic pump capable of accurately controlling the temperature of an outer stator core as claimed in claim 1, characterized in that: The outer stator core is formed by stacking oriented silicon steel sheets, and the rolling direction of the oriented silicon steel sheets is the same as the radial direction of the electromagnetic pump.

10. An electromagnetic pump capable of accurately controlling the temperature of an outer stator core as claimed in claim 1, characterized in that: Support seats are arranged at two ends of the shell exterior.

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