CN117411276A - Superconductive synchronous motor with superconductive magnetic pole stationary - Google Patents
Superconductive synchronous motor with superconductive magnetic pole stationary Download PDFInfo
- Publication number
- CN117411276A CN117411276A CN202311379617.4A CN202311379617A CN117411276A CN 117411276 A CN117411276 A CN 117411276A CN 202311379617 A CN202311379617 A CN 202311379617A CN 117411276 A CN117411276 A CN 117411276A
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- China
- Prior art keywords
- superconducting
- magnetic pole
- stage
- stationary
- side end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 239000010949 copper Substances 0.000 claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 230000003068 static effect Effects 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 abstract description 11
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K55/00—Dynamo-electric machines having windings operating at cryogenic temperatures
- H02K55/02—Dynamo-electric machines having windings operating at cryogenic temperatures of the synchronous type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superconductive Dynamoelectric Machines (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a superconductive synchronous motor with a stationary superconductive magnetic pole, which comprises an external superconductive magnetic pole component in a stationary state, an internal armature component in a rotating state, a slip ring and a plurality of superconductive magnetic poles arranged on an integral magnet framework, wherein a copper cold screen and a vacuum container are sequentially arranged outside the superconductive magnetic poles, a plurality of two-stage cryocooler cold heads are arranged on a driving side end plate or/and a non-driving side end plate, one-stage conduction cooling of the two-stage refrigerator surrounds the copper cold screen, a two-stage conduction cooling magnetic pole framework of the two-stage refrigerator is in a rotating state, the armature component is in the inside of the superconductive magnetic pole component, and armature current is introduced from the stationary state through the slip ring. The superconducting synchronous motor superconducting magnetic pole is in a static state, so that the conduction cooling is conveniently performed by adopting the two-stage refrigerator, a low-temperature refrigerant rotary coupling device is omitted, a peripheral low-temperature cooling system is greatly simplified, and the advantages of the superconducting motor can be fully exerted.
Description
Technical Field
The invention belongs to the technical field of superconducting motors, and particularly relates to a superconducting synchronous motor with a stationary superconducting magnetic pole.
Background
Due to the high current carrying capacity of the superconducting tape, compared with a conventional motor, the high-capacity superconducting motor has the advantages of small size, light weight, high efficiency and the like.
At present, most superconducting synchronous motors adopt a structure form that a superconducting magnetic pole is positioned at a rotating rotor end and an armature is positioned at a static end, and a low-temperature refrigerant is required to be transmitted from a static peripheral low-temperature system to a rotating rotor superconducting magnet through a low-temperature refrigerant rotating coupling device. The low-temperature refrigerant rotary coupling device relates to complex characteristics of static to rotary, vacuum low-temperature heat insulation, multilayer concentric thin-wall tubes, low-temperature rotary sealing of inlet and return refrigerant and the like, and the difficulty and long-term working uncertainty of the device are increased.
Meanwhile, the peripheral low-temperature system is also required to be provided with a low-temperature refrigerant circulating pump and an integrated Dewar, so that the occupied area of the auxiliary system is increased.
Disclosure of Invention
The invention provides the superconducting synchronous motor with the stationary superconducting magnetic pole aiming at the defects in the prior art, and the cold head of the low-temperature refrigerator is directly arranged on the vacuum container with the superconducting magnetic pole to conduct and cool the superconducting magnetic pole, so that a low-temperature refrigerant rotary coupling device, a low-temperature refrigerant circulating pump and an integrated Dewar are omitted, and the defects of the traditional superconducting synchronous motor are overcome.
The technical scheme adopted for solving the technical problems is as follows: the superconducting synchronous motor comprises a superconducting magnetic pole assembly in a static state, an armature assembly in a rotating state and a slip ring, wherein the superconducting magnetic pole assembly is arranged outside the armature assembly, the armature assembly is arranged inside the superconducting magnetic pole assembly, the superconducting magnetic pole assembly comprises a plurality of superconducting magnetic poles arranged on an integral magnet frame, the outside of the superconducting magnetic pole is surrounded by a copper cold screen, the outside of the copper cold screen is a vacuum container consisting of an inner cylinder, a driving side end plate, a non-driving side end plate and an outer cylinder, a liquid nitrogen cooling channel is formed in the magnet frame and is communicated with the outside of the non-driving side end plate through an inlet and outlet pipeline, a plurality of double-stage cryogenic refrigerator cold heads are arranged on the driving side end plate or/and the non-driving side end plate, and the first-stage conduction cooling copper cold screen of the double-stage cryogenic refrigerator cold heads is used for cooling the magnet frame through a high-purity oxygen-free copper plate in a second-stage conduction mode; the armature assembly comprises a shafting, an iron core assembly and an armature winding, wherein the armature winding is connected with the slip ring through a rotary cable and then led out of a static cable, and the superconducting magnetic pole assembly is connected with the armature assembly through a non-driving end bearing and a driving end bearing on a transition piece.
The two ends of the magnet framework of the superconducting synchronous motor with the stationary superconducting magnetic pole are respectively fixed on the outer cylinder through radial pull rods.
The middle part of the radial pull rod of the superconductive synchronous motor with the static superconductive magnetic pole is connected with the copper cold screen to transfer heat leaking into the room temperature end.
The cold head of the double-stage low-temperature refrigerator is arranged in a sleeve, the sleeve is welded on a non-driving side end plate, and a closed space surrounded by the sleeve and the cold head of the double-stage low-temperature refrigerator is mutually independent of a vacuum space of the vacuum container.
The superconducting synchronous motor with the stationary superconducting magnetic pole is characterized in that a plurality of layers of heat insulation materials are wrapped outside a copper cold screen.
By adopting the technical scheme, the invention has the following advantages:
compared with a superconducting synchronous motor with a superconducting magnetic pole at a rotating rotor end and an armature winding at a stationary end, the invention omits a low-temperature refrigerant rotating coupling device, a refrigerant storage tank, a low-temperature refrigerant circulating pump and an integrated Dewar, greatly reduces the complexity of an auxiliary system of the superconducting synchronous motor and reduces the volume of the auxiliary system.
The cold head of the cryocooler is arranged in a sleeve, and the disassembly, assembly and maintenance of the cold head do not affect the main vacuum where the superconducting magnetic pole is positioned.
And 3, arranging a liquid nitrogen cooling channel on the superconducting magnet framework, and greatly reducing the cooling time through liquid nitrogen precooling.
The invention adopts the structural style of a double-stage low-temperature refrigerator and a copper cold screen, can greatly reduce the temperature area of the magnet and improve the through-flow capacity of the magnet, thereby improving the torque density of the superconducting synchronous motor.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The reference numerals are as follows: 1-static cable, 2-slip ring, 3-rotating cable, 4-shafting, 5-non-driving end bearing, 6-transition piece, 7-armature winding, 8-iron core component, 9-double-stage cryocooler cold head, 10-inlet and outlet pipe, 11-non-driving side end plate, 12-sleeve, 13-high-purity oxygen-free copper plate, 14-radial pull rod, 15-copper cold screen, 16-outer cylinder, 17-magnet skeleton, 18-superconducting magnetic pole, 19-driving side end plate, 20-inner cylinder and 21-driving end bearing.
Description of the embodiments
For further explanation of the object and technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments of the accompanying drawings. The following examples are only for the purpose of illustrating the invention and are not to be construed as limiting the invention.
Referring to fig. 1, the superconducting synchronous motor with a stationary superconducting magnetic pole disclosed by the invention comprises a superconducting magnetic pole assembly in a stationary state, an armature assembly in a rotating state and a slip ring 2, wherein the superconducting magnetic pole assembly is arranged outside the armature assembly, and the armature assembly is arranged inside the superconducting magnetic pole assembly.
The superconducting magnetic pole assembly comprises a plurality of superconducting magnetic poles 18, the plurality of superconducting magnetic poles 18 are arranged on an integral magnet framework 17, the outside of the superconducting magnetic pole assembly is surrounded by a copper cold screen 15, the outside of the copper cold screen is a vacuum container consisting of an inner cylinder 20, a driving side end plate 19, a non-driving side end plate 11 and an outer cylinder 16, a liquid nitrogen cooling channel is arranged on the magnet framework 17 and is communicated to the outside of the non-driving side end plate 11 through an inlet and outlet pipeline 10, the two-stage low-temperature refrigerator cold head 9 is arranged on the side of the non-driving side end plate 11, the two-stage low-temperature refrigerator cold head 9 adopts a commercial refrigerator cold head and is combined with an external refrigerator compressor, one or a plurality of low-temperature cold screens can be selected according to the refrigerating capacity requirement, and the two-stage low-temperature refrigerator cold head 9 is used for cooling the copper cold screen 15 through the two-stage conduction of the high-purity oxygen-free copper plate 13.
The armature assembly comprises a shafting 4, an iron core assembly 8 and an armature winding 7, wherein the armature winding 7 is connected with the slip ring 2 through the rotary cable 3, then the stationary cable 1 is led out, and the armature current leads the current on the stationary cable 1 to the rotary cable 3 through the slip ring 2 and then is connected with the armature winding 7.
The superconducting magnetic pole assembly is connected with the armature assembly through a non-driving end bearing 5 and a driving end bearing 21 on the transition piece 6.
The two ends of the magnet framework 17 are respectively fixed on the outer cylinder 16 through radial pull rods 14, and the middle parts of the radial pull rods 14 are connected with a copper cold screen 15 to transfer heat leaking into the room temperature end.
The two-stage low-temperature refrigerator cold head 9 is arranged in a sleeve 12, the sleeve 12 is welded on a non-driving side end plate 11, and a closed space enclosed by the sleeve 12 and the two-stage low-temperature refrigerator cold head 9 is mutually independent of a vacuum space of the superconducting magnetic vacuum container. The copper cold screen 15 is wrapped with a plurality of layers of heat insulation materials. The armature winding 7 may be cooled by air cooling or by liquid cooling by feeding a liquid cooling medium into and out of the pipe 10 to a cooling passage in the armature winding 7.
It should be understood that the foregoing description is only of preferred embodiments of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A superconducting synchronous motor with stationary superconducting poles, characterized by: comprises an outer superconducting magnetic pole assembly in a static state, an inner armature assembly in a rotating state and a slip ring (2); the superconducting magnetic pole assembly comprises a plurality of superconducting magnetic poles (18) arranged on an integral magnet framework (17), a copper cold screen (15) is arranged outside the superconducting magnetic poles (18), a vacuum container consisting of an inner cylinder (20), a driving side end plate (19), a non-driving side end plate (11) and an outer cylinder (16) is arranged outside the copper cold screen (15), a liquid nitrogen cooling channel is formed in the magnet framework (17), the liquid nitrogen cooling channel is communicated to the outside of the non-driving side end plate (11) through an inlet and outlet pipeline (10), a plurality of double-stage low-temperature refrigerator cold heads (9) are arranged on the driving side end plate (19) or/and the non-driving side end plate (11), and the first-stage conduction cooling copper cold screen (15) of the double-stage low-temperature refrigerator cold heads (9) cools the magnet framework (17) through the second-stage conduction of a high-purity oxygen-free copper plate (13); the armature assembly comprises a shaft system (4), an iron core assembly (8) and an armature winding (7), wherein the armature winding (7) is connected with the slip ring (2) through the rotary cable (3) and then led out of the stationary cable (1); the superconducting magnetic pole assembly is connected with the armature assembly through a non-driving end bearing (5) and a driving end bearing (21) on the transition piece (6).
2. A superconducting synchronous machine with stationary superconducting magnetic poles according to claim 1, wherein the two ends of the magnet frame (17) are respectively fixed on the outer cylinder (16) by radial tie rods (14).
3. A superconducting synchronous machine with stationary superconducting magnetic poles according to claim 2, characterized in that the intermediate part of the radial tie rod (14) is connected with a copper cold screen (15).
4. A superconducting synchronous motor with a stationary superconducting magnetic pole according to claim 3, wherein the cold head (9) of the two-stage cryocooler is installed in a sleeve (12), the sleeve (12) is welded on a non-driving side end plate (11), and a closed space enclosed by the sleeve (12) and the cold head (9) of the two-stage cryocooler is independent of a vacuum space of the vacuum container.
5. A superconducting synchronous machine with stationary superconducting magnetic poles according to claim 4, characterized in that the copper cooling screen (15) is encased with a plurality of layers of insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311379617.4A CN117411276A (en) | 2023-10-24 | 2023-10-24 | Superconductive synchronous motor with superconductive magnetic pole stationary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311379617.4A CN117411276A (en) | 2023-10-24 | 2023-10-24 | Superconductive synchronous motor with superconductive magnetic pole stationary |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117411276A true CN117411276A (en) | 2024-01-16 |
Family
ID=89490298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311379617.4A Pending CN117411276A (en) | 2023-10-24 | 2023-10-24 | Superconductive synchronous motor with superconductive magnetic pole stationary |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117411276A (en) |
-
2023
- 2023-10-24 CN CN202311379617.4A patent/CN117411276A/en active Pending
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