CN203631223U

CN203631223U - High-temperature superconductive coil

Info

Publication number: CN203631223U
Application number: CN201320848766.6U
Authority: CN
Inventors: 宋萌; 王作帅; 任丽; 曹昆南; 胡南南; 沈石峰; 董洪达; 赵翔
Original assignee: Huazhong University of Science and Technology; Yunnan Electric Power Experimental Research Institute Group Co Ltd of Electric Power Research Institute
Current assignee: Huazhong University of Science and Technology; Yunnan Electric Power Experimental Research Institute Group Co Ltd of Electric Power Research Institute
Priority date: 2013-12-21
Filing date: 2013-12-21
Publication date: 2014-06-04
Anticipated expiration: 2023-12-21

Abstract

The utility model discloses a high-temperature superconductive coil. The high-temperature superconductive coil comprises an epoxy cylinder and a plurality of layers of coil units, wherein the epoxy cylinder is in a hollow cylinder shape; the coil units are stacked and arranged on the middle area of the epoxy cylinder in a sleeved mode; each coil unit is provided with a low-temperature rubber layer, a polyimide thin film layer and a superconductive strip layer in sequence; the superconductive strip of each superconductive strip layer is continuous; each polyimide thin film layer is composed of a polyimide thin film winding layer and a polyimide strip layer; each polyimide strip layer is composed of several polyimide strips which are arranged on the corresponding polyimide thin film winding layer in the axis direction at equal intervals; the polyimide strips of each polyimide strip layer are continuous. Through the layer insulation of the polyimide thin film layers and the low-temperature rubber layers, the high-temperature superconductive coil has the good structural stability and working safety.

Description

A kind of high temperature superconductor coil

Technical field

The utility model relates to high temperature superconductor coil, is specifically related to a kind of high temperature superconductor coil.

Background technology

Along with the economic develop rapidly of China, rise year by year in many urban power consumption, and the electric load of urban central zone increases sharply, and power transmission and distribution capacity significantly increases, and reduces grid loss and improve the problems such as operation of power networks stability also to propose thereupon.Network system is very large in the loss of power transmission and distribution link at present, therefore minimizing grid loss scheme is all being found by each state, wherein superconductor is one of most important scheme reducing grid loss, superconductor has low-loss, high efficiency, transmission current density advantages of higher, significant for the development of following power industry.In recent years, along with the development of high temperature superconducting materia technology, electromagnetic property and the mechanical property of high temperature superconducting materia are greatly improved, and high temperature superconducting materia can be realized and commercially produce on a large scale.The commercially producing of superconducting tape promoted superconducting device in global broad research and application.Superconducting coil is the core of superconducting device, and therefore the technique for coiling of superconducting coil has almost determined the quality of the performance of superconducting device.The technique for coiling of a underproof superconducting coil can cause the performance of superconducting coil device greatly to reduce, and in serious situation, even can cause burning of superconducting coil.

In the process of high temperature superconductor coil coiling, the technique for coiling such as fixing of the processing of the coiling form of coil, the selection of skeleton, prestressed size, turn-to-turn and layer insulation and coil all can affect the performance of superconducting coil, thereby need to determine suitable technique for coiling, can meet design requirement with the electromagnetic property that guarantees superconducting coil, guarantee the security and stability of superconducting magnet long-term work simultaneously.

Utility model content

The purpose of this utility model is to provide a kind of high temperature superconductor coil, and object is to guarantee that high temperature superconductor coil has good structural stability and job security.

A kind of high temperature superconductor coil that the utility model provides, it is characterized in that, it comprises epoxy cylinder and lattice coil unit, described epoxy cylinder is open circles tubular, the stacked zone line that is enclosed within this epoxy cylinder of each layer line coil unit, each coil unit unit is by the low temperature glue-line of arranging successively, polyimide film layer and superconducting tape layer composition, the superconducting tape of each superconducting tape layer is continuous, described polyimide film layer is made up of polyimide film winding layer and polyimides belt, this polyimides belt is made up of several polyimides bands along axis direction disposed at equal distance on polyimide film winding layer, polyimides band between each polyimides belt is continuous.

The utility model structure can adopt superconducting coil layering coiling, can guarantee insulation and stability, by the processing of band half-stack package, guarantees turn-to-turn insulation; The structure being formed by low temperature glue, polyimide film and polyimides band guarantees layer insulation in fixed coil, has simplified and has fixed and apply the process complexity of insulation.

Accompanying drawing explanation

Fig. 1 is the fixing polyimide film schematic diagram of skeleton.

Fig. 2 single layer coil winding process figure, wherein (a) is coiling one deck result schematic diagram, is (b) layer insulation schematic diagram (leading to phantom), (c) for arrowband returns paving schematic diagram.

Fig. 3 is new layer coiling result schematic diagram (leading to phantom).

Fig. 4 is coil general illustration.

Embodiment

In the utility model, the band amount that coiling needs is when less, adopt the coiling of solenoid coil mode to avoid the connection between coil, adopt directly coiling of single strips (also can be double joint around), make winding process more convenient and can not bring damage to band.When concrete coiling, adopt the mode of layering coiling, selected superconducting tape with polyimide film half-stack package around, thereby guarantee turn-to-turn insulation; When every coiling completes one deck coil, interlayer lays one deck polyimide film, is used for guaranteeing layer insulation, prevents superconducting layer distortion simultaneously, comes off; Fixing low temperature glue, every coiling one deck, equably the brushing one deck low temperature glue on superconducting layer of adopting of turn-to-turn; The fixing polyimide film (band shape) that adopts of interlayer, by polyimide film along skeleton even circumferential distribute, every coiling one deck, tension, time paving, fixing, last colligation is fixed, to guarantee that superconducting coil is not in the situation that flooding, and can be comparatively firm.

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that instantiation described herein is only for explaining the utility model, and be not used in restriction the utility model.

The utility model, in implementation process, considers that the upper end of epoxy cylinder 1 need to reserve the distance of current feed, and lower end needs perforate to be convenient to the circulation of liquid nitrogen, thereby the two ends up and down of epoxy cylinder 1 all reserve certain distance.

The superconducting tape that the superconducting coil of the utility model example adopts completes insulation processing by half-stack package mode, carries out the coiling of superconducting coil according to mode below.

As shown in Figure 1, according to above-mentioned requirements, the centre of getting epoxy cylinder 1 is coiling region, after mark is carried out on the border in coiling region, evenly coats low temperature glue, then polyimide film 2 is wound around to one deck along winding region field surface, and is connected and fixed with Kapton Tape at interface; After completing by 8 polyimides bands 4 along axis direction uniform spreading on epoxy cylinder 1 surface, tension, two ends are fixing with Kapton Tape 3;

As shown in Fig. 2 (a), superconducting tape one end is fixed on epoxy cylinder 1 with Kapton Tape, then even coiling one deck 5 closely, should guarantee that in this process polyimides band is tension;

As shown in Fig. 2 (b), after ground floor coiling, the first circle is sticked on skeleton with Kapton Tape, to avoid superconducting layer to deform, and be that the making of terminal and current feed is ready, simultaneously even with 6 brushings of low temperature glue on the good individual layer band of coiling, then, by polyimide film 2 uniform winding one deck on the complete superconducting tape of coiling, interface is fixed with Kapton Tape;

As shown in Fig. 2 (c), polyimides band 4 is turned back, returns paving completing after said process, equally along axis direction uniform spreading on epoxy cylinder surface, tension guarantees lax, one end is fixing with Kapton Tape 3.

Each root polyimides band of every layer is all continuous, is a kind of shape of reciprocating and turning-back, and similar a kind of zigzag returns paving once around one deck superconducting tape.

As shown in Figure 3, on the basis of last layer coil, repeat the operation shown in Fig. 1, Fig. 2 (a), (b), coiling second layer superconducting coil 5, evenly, and is wound around one deck with polyimide film 2 with low temperature glue 6 brushing on band;

Repeat step shown in Fig. 2 (c), by 4 times pavings of polyimides band, tension, fixing;

Repeat above process, successively coiling is until complete the coiling of whole coil;

As shown in Figure 4, complete after coiling, last circle superconducting tape terminal 7 use heat-shrinkable T bushs 8 of last one deck entangle; so that the terminal of protection coil, is then fixed on leading-out terminal on padded cardboard bar 9, and polyimides is taken back to paving; stick on outermost layer; be wound around one deck in strip surface with polyimides band, carry out and fix and brush insulating varnish, form outer 10 protections; superconducting coil can be fixed better; again coil is put into drying baker, temperature, lower than 100 ℃, is dried 24 hours.

The high temperature superconductor coil that the utility model provides can adopt single (or double joint) band layering coiling to form, all superconducting layers form by same band coiling, therefore interlayer non junction, avoid the problem of internal connection fault, only retained interior one deck first circle the end of a thread and last circle the end of a thread of outermost one deck as turnover current feed joint.

Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.

Claims

1. a high temperature superconductor coil, it is characterized in that, it comprises epoxy cylinder and lattice coil unit, described epoxy cylinder is open circles tubular, the stacked zone line that is enclosed within this epoxy cylinder of each layer line coil unit, each coil unit unit is by the low temperature glue-line of arranging successively, polyimide film layer and superconducting tape layer form, the superconducting tape of each superconducting tape layer is continuous, described polyimide film layer is made up of polyimide film winding layer and polyimides belt, this polyimides belt is made up of several polyimides bands along axis direction disposed at equal distance on polyimide film winding layer, polyimides band between each polyimides belt is continuous.

2. high temperature superconductor coil according to claim 1, is characterized in that, the superconducting tape outlet headgear of outermost superconducting tape layer has heat-shrinkable T bush.

3. high temperature superconductor coil according to claim 1, is characterized in that, is also provided with external protection on outermost wire coil unit, and this external protection is made up of the polyimides belt, polyimide film winding layer and the insulation enamelled coating that return paving.