CN111243823A - Anti-creeping cake-type coil insulation support frame - Google Patents
Anti-creeping cake-type coil insulation support frame Download PDFInfo
- Publication number
- CN111243823A CN111243823A CN202010208264.1A CN202010208264A CN111243823A CN 111243823 A CN111243823 A CN 111243823A CN 202010208264 A CN202010208264 A CN 202010208264A CN 111243823 A CN111243823 A CN 111243823A
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- China
- Prior art keywords
- base
- bosses
- cake
- support frame
- insulation support
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- 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.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F2006/001—Constructive details of inductive current limiters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/023—Current limitation using superconducting elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Abstract
The invention relates to an anti-creeping cake-type coil insulation support frame which comprises a base made of an insulation material, wherein a plurality of bosses are arranged on two sides of the base at intervals along the length direction of the base, the bosses on the two sides are equal in number and correspond to each other one by one along the transverse direction of the base, a platform for supporting a superconducting strip is formed between the two bosses in the transverse direction, and a groove penetrating through the whole transverse length of the base is formed between the two bosses in the longitudinal direction. The structure of the invention is wholly wave-shaped, can reduce the bending radius, is mainly used for a cake-type resistance superconducting current limiter and plays the roles of insulation and support. On one hand, the indirect arrangement of the groove can increase the contact area with liquid nitrogen and improve heat exchange; on the other hand, the bosses are arranged on two sides of the wavy tape at intervals, so that the superconducting tape can be fixed, and creepage can be prevented.
Description
Technical Field
The invention relates to an anti-creeping cake-type coil insulation support frame, and belongs to the technical field of superconducting current limiters.
Background
Since the early twentieth century, the discovery of low temperature superconductivity has led to attempts to use superconductivity in the engineering field. To develop superconducting devices such as superconducting cables, superconducting current limiters, superconducting energy storage devices, superconducting generators, superconducting transformers, etc. The superconducting current limiter is used as an effective short-circuit current limiting device, and can quickly limit the short-circuit current to an acceptable level when a short-circuit fault occurs, so that the condition that the large short-circuit current in a power grid causes great harm to the safe and stable operation of the power grid and electrical equipment is avoided, the stability of the power grid can be greatly improved, the reliability and the safety of power supply are improved, the superconducting current limiter has little influence on the power grid when in normal operation, and the superconducting current limiter is paid more and more attention.
The superconducting current limiter comprises a resistance type superconducting current limiter, a saturated core type superconducting current limiter, a bridge type superconducting current limiter, a magnetic shielding type superconducting current limiter and the like. The resistance type superconducting current limiter has zero impedance in normal operation, and is converted into a high impedance state to limit fault current in fault. The resistance type current limiter has simple principle and simple structure, and can effectively limit fault current in alternating current and direct current systems. The cake-shaped coil structure is one of the main structures of the resistance type current limiter, and the insulating support frame of the cake-shaped coil structure can improve the heat exchange of the coil besides playing an insulating role. However, when the coil is impacted, the coil can generate a creepage phenomenon, and therefore, the design of the anti-creepage insulating support frame of the cake-shaped coil is very significant.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a creepage-preventing cake-type coil insulation support frame, which has the following technical scheme:
the utility model provides an anticreep cake formula coil insulation support frame, includes the base of being made by insulating material, sets up a plurality of bosss along base length direction upward interval on the base both sides, and boss quantity on both sides equals and along the horizontal one-to-one of base, forms the platform that supports the superconducting tape between two bosss on horizontal, sets up the recess that link up the whole transverse length of base between two bosss on vertical.
Preferably, the material of the base is polytetrafluoroethylene.
Preferably, the base is a cuboid.
Preferably, the boss is trapezoidal in shape.
Preferably, the groove is rectangular in shape.
Preferably, the base is integrally formed with the boss.
Preferably, the bosses are equally spaced along the length of the base.
The structure of the invention is wholly wave-shaped, can reduce the bending radius, is mainly used for a cake-type resistance superconducting current limiter and plays the roles of insulation and support. On one hand, the indirect arrangement of the groove can increase the contact area with liquid nitrogen and improve heat exchange; on the other hand, the bosses are arranged on two sides of the wavy tape at intervals, so that the superconducting tape can be fixed, and creepage can be prevented.
Drawings
In order that the technical solutions and advantageous effects of the present invention can be more easily understood, the present invention will be described in detail with reference to specific embodiments thereof shown in the accompanying drawings. The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention:
fig. 1 is a perspective view of one embodiment of an anti-creep pancake coil insulation support frame according to the present invention.
Fig. 2 is a perspective view of the insulating support frame after the superconducting tape is placed on the pancake coil according to the embodiment of fig. 1.
Detailed Description
The present invention will be described in further detail below with reference to fig. 1-2.
As shown in fig. 1 and 2, there are respectively a perspective view of an embodiment of an anti-creeping pancake coil insulation support frame according to the present invention and a perspective view of an insulation support frame after a superconducting tape is placed on a pancake coil in the embodiment of fig. 1. This prevent cake formula coil insulation support frame of creepage, include the base 1 of being made by insulating material, set up a plurality of trapezoidal bosss 2 along base length direction interval on base 1 both sides, trapezoidal boss quantity on both sides equals and along base 1's horizontal one-to-one, forms the platform that supports superconducting tape 4 between two trapezoidal bosss on horizontal, vertically sets up the recess 3 that link up the whole transverse length of base between two trapezoidal bosss, the interval between the trapezoidal boss 2 on the base length direction equals.
The support frame can be provided with bosses 2 with different shapes and grooves 3 with different shapes, and is used for improving heat exchange and increasing creepage distance. The device is integral and made entirely of an insulating material, such as polytetrafluoroethylene. The device can play the roles of insulation and support, and plays a favorable role in the anti-creeping and quench recovery of the superconducting current limiter.
The trapezoid boss 2 is used for fixing the superconducting tape and plays a role in preventing creepage. Liquid nitrogen and a superconducting tape are arranged above the groove 3, so that the contact area of the liquid nitrogen and the superconducting tape is increased.
The superconducting strip 4 is fixed through the trapezoid boss 2 to obtain a basic structure of a cake-shaped coil, the strip and the insulating support frame are wound on a cake disc through a winding machine to obtain the cake-shaped coil, and finally the cake-shaped superconducting current limiter is obtained through series connection.
The invention is a wave-shaped structure, the superconducting strip 4 is placed in the groove 3, the trapezoidal bosses 2 are additionally arranged on the two sides, the superconducting strip 4 can be fixed, the creepage distance is increased, and the creepage is effectively prevented. The grooves 3 are arranged at intervals, so that the contact area of the superconducting tape 4 and liquid nitrogen can be increased, and heat exchange is improved.
The insulating support frame base of the anti-creeping cake-type coil is a cuboid, and a groove and a trapezoidal boss are formed in the insulating support frame base. The grooves and the bosses may be of different shapes, here illustrated as rectangles and trapezoids, respectively. The whole insulation support frame of the anti-creepage cake-type coil is soaked in liquid nitrogen, the groove is filled with the liquid nitrogen, and the superconducting strip is placed in the middle of the trapezoid boss.
The present invention may be embodied in other specific forms without departing from its scope, which is limited only by the accompanying claims.
Claims (7)
1. The utility model provides an anticreep cake formula coil insulation support frame, includes the base of being made by insulating material, sets up a plurality of bosss along base length direction upward interval on the base both sides, and boss quantity on both sides equals and along the horizontal one-to-one of base, forms the platform that supports the superconducting tape between two bosss on horizontal, sets up the recess that link up the whole transverse length of base between two bosss on vertical.
2. The anti-creep pancake coil insulation support stand of claim 1 wherein the base material is polytetrafluoroethylene.
3. The anti-creep pancake coil insulation support stand of claim 1 wherein the base is a cuboid.
4. The creepage resistant pancake coil insulating support frame of claim 1 wherein the boss is trapezoidal in shape.
5. The creep resistant pancake coil insulating support stand of claim 1 wherein the groove is rectangular in shape.
6. The anti-creep pancake coil insulation support stand of claim 1 wherein the base is integrally formed with a boss.
7. The anti-creep pancake coil insulation support stand according to any one of claims 1-6 wherein the bosses in the base length direction are equally spaced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208264.1A CN111243823A (en) | 2020-03-23 | 2020-03-23 | Anti-creeping cake-type coil insulation support frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010208264.1A CN111243823A (en) | 2020-03-23 | 2020-03-23 | Anti-creeping cake-type coil insulation support frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111243823A true CN111243823A (en) | 2020-06-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010208264.1A Pending CN111243823A (en) | 2020-03-23 | 2020-03-23 | Anti-creeping cake-type coil insulation support frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111243823A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202352506U (en) * | 2011-11-28 | 2012-07-25 | 成都科星电力电器有限公司 | Zero sequence current mutual inductor |
| CN103117145A (en) * | 2013-03-12 | 2013-05-22 | 中国科学院电工研究所 | Insulation and cooling spacing layer of high temperature superconducting non-inductive coil |
| CN204441076U (en) * | 2015-04-14 | 2015-07-01 | 山东电力设备有限公司 | A kind of superconducting transformer coil filler strip |
| CN205016350U (en) * | 2015-09-18 | 2016-02-03 | Abb技术有限公司 | Coil support frame |
| JP6005386B2 (en) * | 2012-04-09 | 2016-10-12 | 中部電力株式会社 | Superconducting coil device and manufacturing method thereof |
| CN206961660U (en) * | 2017-04-01 | 2018-02-02 | 许昌中衡电气有限公司 | A kind of porcelain shell for voltage mutual inductor |
-
2020
- 2020-03-23 CN CN202010208264.1A patent/CN111243823A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202352506U (en) * | 2011-11-28 | 2012-07-25 | 成都科星电力电器有限公司 | Zero sequence current mutual inductor |
| JP6005386B2 (en) * | 2012-04-09 | 2016-10-12 | 中部電力株式会社 | Superconducting coil device and manufacturing method thereof |
| CN103117145A (en) * | 2013-03-12 | 2013-05-22 | 中国科学院电工研究所 | Insulation and cooling spacing layer of high temperature superconducting non-inductive coil |
| CN204441076U (en) * | 2015-04-14 | 2015-07-01 | 山东电力设备有限公司 | A kind of superconducting transformer coil filler strip |
| CN205016350U (en) * | 2015-09-18 | 2016-02-03 | Abb技术有限公司 | Coil support frame |
| CN206961660U (en) * | 2017-04-01 | 2018-02-02 | 许昌中衡电气有限公司 | A kind of porcelain shell for voltage mutual inductor |
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Application publication date: 20200605 |