rotating device

Abstract

The present invention relates to a rotary device, and provides a rotary device including: a rotor including a liquid accumulator provided with a coil assembly arranged at an outer circumferential surface of the liquid accumulator; a rotary support part coupled to the liquid accumulator and including a bellows part; a refrigerant pipe passing through the rotary support part so as to extend into the inside of the liquid accumulator; and a torque transmission part coupled to the liquid accumulator and the rotary support part; wherein the bellows part is located inside the torque transmission part.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit and priority of patent application No. 10-2024-0193990 filed on December 23, 2024, with the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This invention relates to a superconducting rotating device capable of using a refrigerant to cool the rotor. Background Technology

[0004] High-temperature superconductor (HTS) rotating devices refer to high-temperature superconductor (HTS) rotating devices that, due to their high power efficiency and miniaturization, can be used in various fields, such as electric motors, generators, wind turbines, and marine drives. Therefore, rotating devices can be used in a variety of applications requiring high output and miniaturization.

[0005] In related technologies, coil blocks can be cooled either by directly attaching a cryogenic refrigerator to the rotor or by circulating a cryogenic refrigerant. However, attaching the cryogenic refrigerator is structurally disadvantageous in terms of cooling efficiency, while circulating cooling can lead to difficulties in complex piping design and installation.

[0006] Therefore, in order to avoid the above problems, a rotating device is needed to improve cooling efficiency and provide a simple cooling mechanism. Summary of the Invention

[0007] One aspect of the present invention is to prevent refrigerant leakage inside the rotor during rotor rotation, thereby maintaining the rotor temperature at an appropriate level and ensuring the performance of the rotating device.

[0008] The technical problems solved by the present invention are not limited to those described above, and those skilled in the art to which this invention pertains can clearly understand other technical problems not mentioned above through the following description.

[0009] This invention aims to solve the aforementioned problems related to the prior art. This invention provides a rotating device comprising a rotor, the rotor including a liquid reservoir, a rotating support portion, a refrigerant pipe, and a torque transmission portion. The liquid reservoir is provided with a coil assembly disposed on its outer peripheral surface; the rotating support portion is engaged with the liquid reservoir and includes a bellows portion; the refrigerant pipe passes through the rotating support portion and extends into the liquid reservoir; the torque transmission portion is engaged with the liquid reservoir and the rotating support portion; the bellows portion is located inside the torque transmission portion.

[0010] The torque transmission section may include a main body, a first disc section, and a second disc section, wherein the first disc section is arranged on one side of the main body; the second disc section is arranged on the other side of the main body; and the first disc section is engaged with a reservoir.

[0011] A reservoir flange may be arranged on one side of the reservoir, and the reservoir flange is partially engaged with the first tray.

[0012] The inner circumferential surface of the main body can be spaced apart from the bellows portion in a direction perpendicular to the rotation axis of the rotor.

[0013] The rotating support portion may include a first flange portion and a second flange portion; the bellows portion may be arranged between the first flange portion and the second flange portion, and the first flange portion may be connected to the reservoir.

[0014] The rotating device may further include a reservoir flange, which may be arranged on one side of the reservoir and may engage with a first flange portion.

[0015] The torque transmission section may include a main body, a first disc section, and a second disc section, wherein the first disc section is arranged on one side of the main body; the second disc section is arranged on the other side of the main body; and the second disc section may be engaged with a second flange section.

[0016] The rotating device may further include a vacuum chamber, and a liquid reservoir may be arranged inside the vacuum chamber.

[0017] The rotating support portion may include a first flange portion and a second flange portion; the bellows portion may be arranged between the first flange portion and the second flange portion, and the second flange portion may be connected to the vacuum chamber.

[0018] One surface of the second flange portion can engage with the torque transmission portion, and the other surface of the second flange portion can engage with the vacuum chamber.

[0019] The corrugated section can be made of stainless steel.

[0020] The torque transmission component can be made of glass fiber reinforced plastic.

[0021] The liquid receiver may include a liquid receiver body and a liquid receiver flange, wherein the refrigerant is located inside the liquid receiver body; the liquid receiver flange is connected to one side of the liquid receiver body.

[0022] The torque transmission section includes a main body and a first disc section. The first disc section is arranged on one side of the main body and is connected to the reservoir flange. The diameter of the first disc section is larger than the diameter of the reservoir body.

[0023] The above and other features of the present invention are discussed below. The effects obtained by the present invention are not limited to the above-described effects, and other effects not mentioned above will be clearly understood by those skilled in the art from the following description. Attached Figure Description

[0024] The above and other aspects, features, and advantages of the invention should be more clearly understood from the following description presented in conjunction with the accompanying drawings, in which:

[0025] Figure 1 To illustrate a cross-sectional perspective view of the rotating device according to the embodiment;

[0026] Figure 2 A cross-sectional view of the rotating device according to the embodiment is shown;

[0027] Figure 3 A perspective view of the reservoir according to the embodiment is shown;

[0028] Figure 4 An exploded perspective view of the reservoir according to an embodiment is shown;

[0029] Figure 5 To illustrate a cross-sectional view of the reservoir according to the embodiment;

[0030] Figure 6 A perspective view of the rotating support portion according to the implementation plan;

[0031] Figure 7 This is a cross-sectional view of the rotating support portion according to the implementation plan;

[0032] Figure 8 A perspective view showing the torque transmission section according to the embodiment;

[0033] Figure 9 This is a cross-sectional view of the torque transmission section according to the implementation plan.

[0034] It should be understood that the accompanying drawings are not drawn to scale and show appropriately simplified depictions of various features illustrating the basic principles of this application. Specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, positions, and shapes, will be determined in part by the specific application and environment in which they are used.

[0035] In the accompanying drawings, the same reference numerals denote the same or equivalent parts of the invention in multiple figures throughout the drawings. Detailed Implementation

[0036] This invention can be modified in various ways and can have various embodiments, which are shown in the accompanying drawings and described in detail in the specification. However, this is not intended to limit the invention to the specific embodiments, and it should be understood that the invention includes all modifications, equivalents, or alternatives that fall within the spirit and scope of the invention.

[0037] For example, terms such as "first" and "second" can be used to describe various components, and the components are not limited by these terms. The terms are used only to distinguish one component from another. For example, a first component can be referred to as a second component without departing from the scope of the invention, and similarly, a second component can be referred to as a first component. The term "and / or" includes a combination of multiple related descriptive articles or any one of multiple related descriptive articles.

[0038] The terms "-unit," "-part," "-section," etc., can be used to describe various components, but the component should not be limited by these terms. These terms can describe not only physical / visible differences in structure, but also the function or structure of the corresponding parts, even if such differences / divisions are not explicitly defined.

[0039] The terminology used in this specification is for describing particular embodiments only and is not intended to limit the invention. Unless the context clearly indicates otherwise, singular expressions include plural expressions. Terms such as “comprising,” “having,” etc., as used in this specification should be understood to indicate the presence of the features, quantities, steps, operations, components, parts, or combinations thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, quantities, steps, operations, components, parts, or combinations thereof.

[0040] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in common dictionaries shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted as having an imaginary or overly formal meaning, unless expressly defined in the specification.

[0041] In the following descriptions, terms such as “forward,” “backward,” “side,” “front,” “rear,” “up,” “above,” “down,” “below,” “left and right,” etc., are based on vehicle or body definitions. Furthermore, terms such as “first,” “second,” etc., may be used to describe various components, but these components are not restricted by the order, size, position, or importance of terms such as “first,” “second,” etc., and are named solely for the purpose of distinguishing one component from others.

[0042] The implementation scheme will be described in more detail below with reference to the accompanying drawings.

[0043] Figure 1 To illustrate a cross-sectional perspective view of the rotating device according to the embodiment, Figure 2 A cross-sectional view of the rotating device according to the embodiment is shown.

[0044] refer to Figure 1 and Figure 2 According to one embodiment, the rotating device may include a vacuum chamber 10, a liquid reservoir 20, a refrigerant pipe 30, a rotating support portion 40, and a torque transmission portion 50.

[0045] Vacuum chamber 10 may have a hollow cylindrical structure. Vacuum chamber 10 may have a vacuum space 11. Vacuum space 11 can provide a high vacuum environment. Vacuum chamber 10 may be connected to a pump to maintain vacuum space 11 in a vacuum state. Vacuum chamber 10 may have a cylindrical shape, but its shape is not limited to this. Vacuum chamber 10 may have a first axis extending in a first direction as a rotation axis. Vacuum chamber 10 can improve thermal insulation by preventing heat transfer between reservoir 20 and the outside by maintaining vacuum space 11 as a vacuum.

[0046] The reservoir 20 can be located in the vacuum space 11. The reservoir 20 can be located inside the vacuum chamber 10. The reservoir 20 can be surrounded by the vacuum chamber 10. The reservoir 20 can be engaged with the vacuum chamber 10 via a rotating support portion 40. The reservoir 20 can rotate together with the vacuum chamber 10 about a first axis.

[0047] The receiver 20 can be cooled by receiving refrigerant from the outside and transferring heat to the refrigerant. In one embodiment, the refrigerant can be, for example, hydrogen. However, the type of refrigerant is not limited to this. For example, the refrigerant can include helium, nitrogen, etc.

[0048] The reservoir 20 can be a heat exchanger. The reservoir 20 can be coupled to a coil assembly 210. Multiple coil assemblies 210 can be configured. Multiple coil assemblies 210 can be combined along the outer peripheral surface of the reservoir 20. Hereinafter, multiple coil assemblies 210 can be described as a single unit. When the reservoir 20 is cooled and the temperature of the coil assembly 210 decreases, the coil assembly 210 can enter a superconducting state. The structure of the reservoir 20 is described below.

[0049] The refrigerant pipe 30 can supply refrigerant to the interior of the receiver 20. One side of the refrigerant pipe 30 can be connected to a separate cooling system. The refrigerant pipe 30 can receive refrigerant from the cooling system and supply refrigerant to the receiver 20. The refrigerant pipe 30 can pass through one side of the vacuum chamber 10, the rotating support portion 40, and the receiver 20, thereby extending into the interior space 221 of the receiver 20. The refrigerant pipe 30 can extend in a first direction.

[0050] The refrigerant pipe 30 may include a first refrigerant passage and a second refrigerant passage. For example, the refrigerant pipe may have a double-layer structure. The first refrigerant passage may supply refrigerant to the internal space 221 of the receiver body 220. The second refrigerant passage may discharge refrigerant from the internal space 221 of the receiver body 220. The first and second refrigerant passages may be in contact with each other, but are not limited thereto.

[0051] Coil assembly 210 can engage with reservoir 20. Coil assembly 210 can engage with the outer peripheral surface of reservoir 20. Coil assembly 210 can be disposed between reservoir 20 and vacuum chamber 10. Coil assembly 210 can include various types of coils. For example, the coil can have a racetrack shape or a pancake shape, but the shape of the coil is not limited to these. Coil assembly 210 (which can be superconducting through reservoir 20) can receive power from the outside and form a magnetic field. The magnetic field formed by coil assembly 210 can be used to rotate a rotor including reservoir 20 and vacuum chamber 10, or to generate power for a generator. In one embodiment, the rotor can include coil assembly 210, reservoir 20, vacuum chamber 10, rotating support portion 40, and torque transmission portion 50.

[0052] A stator (not shown) may be spaced outward from the outer surface of the vacuum chamber 10. The stator may at least surround a portion of the vacuum chamber 10. The stator may surround the outer surface of the vacuum chamber 10 in the direction of rotation of the rotor. The stator may be fixed to a rotating component housing (not shown) disposed outside the rotor. When electricity is applied to the coil assembly 210 to form a magnetic field, the rotor may rotate through the interaction between the rotor and the stator. In the following text, the stator is well known, and its detailed description is omitted.

[0053] Figure 3 To illustrate a perspective view of the reservoir according to the embodiment, Figure 4 To illustrate an exploded perspective view of the reservoir according to the embodiment, Figure 5 A cross-sectional view of the reservoir according to the embodiment is shown.

[0054] According to one embodiment, the reservoir 20 may include a reservoir body 220 and a reservoir flange 230.

[0055] refer to Figure 3 and Figure 4The receiver body 220 may have a polygonal prism shape. In one embodiment, the receiver body 220 may have an octagonal prism shape. The receiver body 220 may have an internal space 221. At least a portion of the refrigerant pipe 30 may be located within the internal space 221. The receiver body 220 may store refrigerant within the internal space 221. The receiver body 220 may extend along a first direction. (Reference) Figure 5 The liquid reservoir body 220 can extend a first length along a first direction.

[0056] The reservoir body 220 can be made of at least one of copper, aluminum, stainless steel, nickel alloy, and polymer composite materials. However, the material of the reservoir body 220 is not limited to these, and it may also include other metallic materials with high thermal conductivity.

[0057] refer to Figure 4 One side of the receiver body 220 can be connected to the receiver flange 230. The receiver body 220 can be connected to other components of the rotor via the receiver flange 230. More specifically, the receiver flange 230 can connect the receiver body 220 and the rotating support portion 40. The refrigerant line 30 can pass through the receiver flange 230 to extend into the internal space 221. The receiver flange 230 can have a through-hole 231 for the refrigerant line 30 to pass through. The diameter of the receiver flange 230 can be larger than the diameter of the receiver body 220. The material of the receiver flange 230 can be the same as, but is not limited to, the material of the receiver body 220.

[0058] Figure 6 To illustrate a perspective view of the rotating support portion according to the embodiment, Figure 7 This is a cross-sectional view of the rotating support portion according to the implementation plan. (Reference) Figure 6 and Figure 7 The rotating support portion 40 may include a bellows portion 410, a first flange portion 420, a second flange portion 430, a main body portion 440, and a bearing engagement portion 450.

[0059] The bellows section 410 can connect the first flange section 420 and the second flange section 430. The first flange section 420 and the second flange section 430 can be spaced apart from each other along a first direction (the direction of the rotor's rotation axis) by means of the bellows section 410 inserted in the middle.

[0060] The bellows portion 410 may include a corrugated portion 411 with a repeating corrugated structure. The corrugated portion 411 can absorb torsional displacement that may occur due to the rotation of the rotating support portion 40. In addition, the bellows portion 410 can absorb displacement in the first direction caused by temperature changes.

[0061] The bellows section 410 can be made or formed of a low-expansion alloy. For example, the bellows section 410 can be made or formed of stainless steel. Because the bellows section 410 is made or formed of a low-expansion alloy, the volume change can be very small even when the temperature changes due to the refrigerant.

[0062] A first flange portion 420 may be disposed on one side of a bellows portion 410. The diameter of the first flange portion 420 may be larger than the diameter of the bellows portion 410. For example, the first flange portion 420 may have a structure that protrudes radially outward from the bellows portion 410. Furthermore, the first flange portion 420 may be configured to protrude along the outer peripheral surface of the bellows portion 410. A mating hole 421 may be provided in the first flange portion 420. A plurality of mating holes 421 may be provided in the first flange portion 420. For example, a plurality of mating holes 421 may be spaced apart from each other in the circumferential direction of the first flange portion 420. Bolts may be fastened to the mating holes 421 located in the first flange portion 420. The first flange portion 420 and the reservoir 20 may be bolted together.

[0063] The second flange portion 430 can be located on the other side of the bellows portion 410. The diameter of the second flange portion 430 can be larger than the diameter of the first flange portion 420. For example, the second flange portion 430 can have a structure that protrudes radially outward from the bellows portion 410. Furthermore, the second flange portion 430 can have a structure that protrudes along the outer peripheral surface of the bellows portion 410. A mating hole 431 can be provided in the second flange portion 430. Multiple mating holes 431 can be provided in the second flange portion 430. For example, multiple mating holes 421 can be spaced apart from each other in the circumferential direction of the second flange portion 430. Bolts can be tightened into the mating holes 431 located in the second flange portion 430. The second flange portion 430 and the vacuum chamber can be bolted together.

[0064] The main body portion 440 may have a cylindrical structure. The second flange portion 430 may be engaged to one side of the main body portion 440, and the bearing engagement portion 450 may be engaged to the other side of the main body portion 440. For example, the second flange portion 430 and the bearing engagement portion 450 may be spaced apart from each other by means of the centrally located main body portion 440. A bearing may be engaged to the bearing engagement portion 450. For example, the rotation of the rotary support portion 40 may be supported by the bearing engagement portion 450.

[0065] Figure 8 To illustrate a perspective view of the torque transmission section according to the embodiment, Figure 9 This is a cross-sectional view of the torque transmission section according to one embodiment. (Reference) Figure 8 and Figure 9The torque transmission section 50 may include a main body section 510, a first disc section 520, and a second disc section 530. The first disc section 520 may be arranged on one side of the main body section 510, and the second disc section 530 may be arranged on the other side of the main body section 510. The torque transmission section 50 may have a symmetrical structure about a line perpendicular to the axis of rotation. For example, the diameters of the first disc section 520 and the second disc section 530 may be the same. The material of the torque transmission section 50 may be glass fiber reinforced plastic. Therefore, compared to the case where the torque transmission section 50 is made of or formed of metal, the mass of the torque transmission section 50 can be reduced, and correspondingly, the moment of inertia of the torque transmission section 50 can also be reduced.

[0066] Refer again Figure 1 and Figure 2 The combination structure of the rotating support part 40 and the torque transmission part 50 will be described.

[0067] The first flange portion 420 of the rotating support portion 40 is arranged facing the reservoir flange 230. The first flange portion 420 and the reservoir flange 230 can be joined by bolts. The diameter of the first flange portion 420 can be smaller than the diameter of the reservoir flange 230. The second flange portion 430 of the rotating support portion 40 can be joined to the vacuum chamber 10 and the torque transmission portion 50. Specifically, one side of the second flange portion 430 can be joined to the vacuum chamber 10, and the other side of the second flange portion 430 can be joined to the torque transmission portion 50. The second flange portion 430 and the vacuum chamber 10 can be joined by bolts. A bearing can be joined to the bearing engagement portion 450 of the rotating support portion 40. The rotation of the rotor, including the rotating support portion 40, can be supported by the bearing.

[0068] The torque transmission section 50 can be arranged between the reservoir flange 230 and the second flange portion 430 of the rotary support section 40. The reservoir flange 230 and the second flange portion 430 can be connected via the torque transmission section 50. Specifically, the first disc portion 520 of the torque transmission section 50 can be engaged with the reservoir flange 230, and the second disc portion 530 can be engaged with the second flange portion 430. The diameter of the first disc portion 520 can be approximately equal to the diameter of the reservoir flange 230. The inner diameter of the torque transmission section 50 can be larger than the diameter of the first flange portion 420. Therefore, the first flange portion 420 and the bellows portion 410 can be located inside the torque transmission section 50.

[0069] Refer again Figure 1 The operation and effects of the rotor according to the present invention will be explained. When current flows through the coil assembly 210, the reservoir 20 is subjected to a rotational force through electromagnetic interaction with the stator.

[0070] The reservoir flange 230 engages with the rotating support portion 40 and the torque transmission portion 50, and the rotating support portion 40 engages with the vacuum chamber 10, so the reservoir 20, the rotating support portion 40, the torque transmission portion 50 and the vacuum chamber 10 can become a rotating rotor.

[0071] The diameter of the reservoir flange 230 is larger than the diameter of the reservoir body 220. A first flange portion 420 engages with the reservoir flange 230, and a first disc portion 520 engages with the reservoir flange 230 at a position further radially outward than the first flange portion 420. In other words, the engagement position of the first flange portion 420 with the reservoir flange 230 is further inward than the engagement position of the first disc portion 520 with the reservoir flange 230.

[0072] The rotational force acting on the receiver 20 can be transmitted to the rotary support portion 40 via the torque transmission portion 50 and the first flange portion 420. Rotation of the receiver 20 may cause displacement due to torsion between the receiver flange 230 and the first flange portion 420. Since the first flange portion 420 is connected to the bellows portion 410, the displacement caused by torsion can be offset. Furthermore, since the rotational force applied to the receiver 20 is also transmitted to the torque transmission portion 50, the rotational force transmitted to the first flange portion 420 can be reduced, thus significantly reducing the torsional displacement between the receiver flange 230 and the first flange portion 420. Therefore, defects between the receiver flange 230 and the rotary support portion 40, as well as refrigerant leakage, can be prevented.

[0073] As described above, in the rotating device according to the embodiment, by preventing leakage of refrigerant introduced into the rotor due to defects in the rotor, the rotor can be maintained at a suitable temperature. Therefore, the stable performance of the rotating device can be guaranteed.

[0074] Although embodiments have been shown and described above, it will be apparent to those skilled in the art that modifications and alterations may be made without departing from the scope of the invention as defined by the appended claims.

Claims

1. A rotating device, comprising: Rotor, the rotor comprising: A liquid reservoir having a coil assembly arranged on the outer peripheral surface of the liquid reservoir; A rotating support portion, which engages with the reservoir and includes a bellows portion; The refrigerant pipe passes through the rotating support portion and extends into the receiver; and The torque transmission section connects to the reservoir and the rotary support section; The bellows section is located inside the torque transmission section.

2. The rotating device according to claim 1, wherein, The torque transmission section includes: Main body; The first section is arranged on one side of the main body; and The second section is located on the other side of the main section; The first disc is partially connected to the reservoir.

3. The rotating device according to claim 2, wherein, A reservoir flange is provided on one side of the reservoir; The reservoir flange is partially joined to the first tray.

4. The rotating device according to claim 2, wherein, The inner circumferential surface of the main body is spaced apart from the bellows portion in a direction perpendicular to the rotation axis of the rotor.

5. The rotating device according to claim 1, wherein, The rotary support portion includes a first flange portion and a second flange portion; The bellows section is arranged between the first flange section and the second flange section. The first flange portion is connected to the reservoir.

6. The rotating device according to claim 5, further comprising a reservoir flange; The reservoir flange is located on one side of the reservoir; The reservoir flange is partially joined to the first flange.

7. The rotating device according to claim 5, wherein, The torque transmission section includes: Main body; The first section is arranged on one side of the main body; and The second section is located on the other side of the main section; The second disc portion is joined to the second flange portion.

8. The rotating device according to claim 1, further comprising a vacuum chamber, wherein a liquid reservoir is disposed within the vacuum chamber.

9. The rotating device according to claim 8, wherein, The rotary support portion includes a first flange portion and a second flange portion; The bellows section is arranged between the first flange section and the second flange section. The second flange portion is joined to the vacuum chamber.

10. The rotating device according to claim 9, wherein, One surface of the second flange portion engages with the torque transmission portion; The other surface of the second flange portion is joined to the vacuum chamber.

11. The rotating device according to claim 1, wherein, The corrugated section is made of stainless steel.

12. The rotating device according to claim 1, wherein, The torque transmission section is made of glass fiber reinforced plastic.

13. The rotating device according to claim 1, wherein, The liquid reservoir includes: The liquid receiver body, with the refrigerant located within the liquid receiver body; and A reservoir flange that is attached to one side of the reservoir body.

14. The rotating device according to claim 13, wherein, The torque transmission section includes: The main body; and The first tray section is located on one side of the main body and is connected to the reservoir flange; The diameter of the first plate section is larger than the diameter of the main body of the liquid reservoir.

15. A rotating device, comprising: Rotor, the rotor comprising: Vacuum chamber; A liquid reservoir, which is located in a vacuum chamber; A coil assembly is arranged on the outer peripheral surface of the reservoir; Rotary support portion, which engages with the reservoir; and The torque transmission section connects to the reservoir and the rotary support section; The coil assembly is arranged between the liquid reservoir and the vacuum chamber.

16. The rotating device according to claim 15, further comprising a refrigerant tube passing through one side of the vacuum chamber and extending into the interior space of the reservoir.

17. The rotating device according to claim 16, wherein, The refrigerant pipe includes: A first refrigerant passage, configured to supply refrigerant to the internal space of a receiver; and The second refrigerant passage is configured to discharge refrigerant from the internal space of the receiver.

18. The rotating device according to claim 15, wherein, The coil assembly is configured to enter a superconducting state and includes multiple coil assemblies assembled along the outer peripheral surface of the reservoir.

19. The rotating device as claimed in claim 15, wherein, The coil assembly is configured such that when electricity is applied to the coil assembly, a magnetic field is formed, such that the magnetic field formed by the coil assembly can cause the reservoir and the vacuum chamber to rotate.

Images