CN111371286A

CN111371286A - Runway type coil framework

Info

Publication number: CN111371286A
Application number: CN202010127233.3A
Authority: CN
Inventors: 胡磊; 马韬; 戴少涛; 王邦柱; 张腾
Original assignee: Beijing Jiaotong University
Current assignee: Beijing Jiaotong University
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-07-03

Abstract

The embodiment of the invention provides a runway type coil framework, which comprises: the coil arc segment framework is a semicircular framework, and two ends of the coil arc segment framework are respectively connected with the coil straight segment framework to form a runway shape; a plurality of isosceles trapezoid-shaped notches are distributed on the surfaces, located on the inner side of the coil framework, of the coil arc segment framework and the coil straight segment framework, and the notches are positions through which a binding belt passes when the runway type coil is wound; the surface of the coil straight-line segment framework, which is positioned at the outer side of the coil framework, is provided with a radian; and the winding gasket is arranged on the outer sides of the coil arc segment framework and the coil straight-line segment framework. The invention aims to solve the problem that a straight line section is easy to loosen in the winding process of a superconducting runway-type coil, and provides a runway-type coil framework.

Description

Runway type coil framework

Technical Field

The invention relates to the technical field of superconducting electricians, in particular to a runway-type coil skeleton.

Background

The superconducting motor adopts the superconducting coil, so that the current carrying capacity of the winding is improved, a magnetic field which is several times larger than that of a conventional coil is generated, and almost no joule heat loss exists, so that the superconducting motor has a series of advanced technical and economic characteristics. If the motor is used for a synchronous generator, the motor efficiency can be improved by about 0.5-0.8% compared with that of a conventional motor; the size is small, the weight is light, and the weight of the whole machine can be reduced by 1/3-1/2; the motor reactance may be reduced to 1/4 to improve motor operating stability. The motor can save iron cores, greatly improves the insulation level of armature windings to the ground, and simultaneously has single machine capacity of more than million kilovolt-ampere because the air gap flux density is 4-5 times larger than that of the conventional motor. However, in the course of winding the racetrack coil of the superconducting motor, too much tension cannot be applied in the winding process due to the special properties of the superconducting material. Therefore, the phenomena of insufficient tension and coil looseness of the superconducting runway type coil are easy to occur in a straight line section, and the performance of the superconducting motor is further influenced.

Disclosure of Invention

The embodiment of the invention provides a runway-type coil skeleton to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme.

A racetrack-type coil armature comprising: the coil arc segment framework is a semicircular framework, and two ends of the coil arc segment framework are respectively connected with the coil straight segment framework to form a runway shape;

a plurality of isosceles trapezoid-shaped notches are distributed on the surfaces, located on the inner side of the coil framework, of the coil arc segment framework and the coil straight segment framework, and the notches are positions through which binding belts pass when the runway type coil is wound;

the surface of the coil straight-line segment framework, which is positioned at the outer side of the coil framework, is provided with a radian;

and the winding gasket is arranged on the outer sides of the coil arc segment framework and the coil straight-line segment framework.

Preferably, the wound gasket is in a runway shape, and the shape of the inner side of the wound gasket is matched with the shapes of the outer sides of the coil arc segment framework and the coil straight segment framework.

Preferably, through holes are respectively formed in two ends of the coil arc segment framework and two ends of the coil straight segment framework, and the through holes correspond to the through holes in position.

Preferably, the two semicircular end faces of the coil arc segment skeleton are respectively provided with a groove.

Preferably, the coil straight-line segment framework is of a linear structure, two ends of the coil straight-line segment framework are respectively provided with a boss, and the size of each boss is matched with the corresponding groove at the two ends of the coil arc-line segment framework.

Preferably, the through holes at two ends of the coil straight-line section skeleton are positioned on the boss, and the through holes at two ends of the coil arc-line section skeleton are perpendicular to the groove.

Preferably, the wound gasket is a composite material sheet in a track shape.

According to the technical scheme provided by the embodiment of the invention, the runway coil skeleton is provided, and a plurality of isosceles trapezoid-shaped gaps are formed in the inner sides of the arc-segment skeleton and the straight-line-segment skeleton of the coil, so that the coil can be effectively matched with a winding tool to bind and fix the coil after the winding is finished without disassembling the tool; the outer side of the framework of the straight-line section of the coil is provided with a certain radian, so that the coil is not easy to loosen when being wound on the straight-line section and can bear larger tension.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of a runway-type coil skeleton structure according to an embodiment of the present invention;

FIG. 2a is a front view of a bobbin for an arc segment of a coil according to an embodiment of the present invention;

FIG. 2b is a top view of a bobbin for a coil arc segment according to an embodiment of the present invention;

figure 3a is a top view of a bobbin for a straight section of a coil provided in accordance with an embodiment of the present invention;

figure 3b is an elevation view of a straight section bobbin of a coil provided in accordance with an embodiment of the present invention;

FIG. 4 is a front view of a wound gasket provided by an embodiment of the present invention;

fig. 5 is a perspective view of a racetrack-type coil skeleton structure according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.

An embodiment of the present invention provides a track-type coil skeleton, as shown in fig. 1 to 5, including: the coil comprises a coil arc segment framework 1, a coil straight segment framework 2 and a winding gasket 3. The coil arc section framework 1 is a semicircular framework, and a plurality of isosceles trapezoid-shaped gaps 103 are distributed on the inner arc surface of the semicircular framework. A plurality of isosceles trapezoid-shaped notches 203 are distributed on one side of the straight-line segment framework 2 of the coil, and the other side of the straight-line segment framework is in a certain radian 204. Two ends of the coil arc segment framework 1 are respectively connected with the coil straight segment framework 2 to form a runway, and a plurality of isosceles trapezoid-shaped gaps 203 on the coil straight segment framework 2 face the inner side of the coil framework. The winding gasket 3 is a thin sheet made of composite materials, is in a runway shape, the radian 301 of the inner side of the winding gasket is matched with the radian 204 of one side of the coil straight-line section framework, the winding gasket 3 is arranged on the outer sides of the coil arc-line section framework 1 and the coil straight-line section framework 2 during coil winding, and the outer surfaces of the coil arc-line section framework 1 and the coil straight-line section framework 2 are respectively divided into two parts by the winding gasket 3. Wherein, a plurality of isosceles trapezoid-

shaped gaps

103 and 203 distributed on the coil arc segment framework 1 and the coil straight segment framework 2 are positions through which the binding belt passes when winding the runway-type coil.

The coil arc segment framework 1 is provided with a groove 101 on each end face of the two semicircular ends, and two through holes 102 are distributed on the side face of the groove 101, wherein the through holes 102 are vertical to the groove 101. The coil straight-line segment framework 2 is of a straight-line structure, two ends of the coil straight-line segment framework are respectively provided with a boss 201, the size of each boss 201 is matched with the corresponding groove 101 at the two ends of the coil arc-line segment framework 1, and the bosses 201 are also provided with through holes 202 corresponding to the through holes 102.

When the framework is installed, the boss 201 is inserted into the groove 101, and the bolt is installed through the through

holes

102 and 202, so that the coil framework can be installed.

In summary, the embodiment of the invention provides a runway-type coil skeleton, wherein a plurality of isosceles trapezoid-shaped notches are formed in the inner sides of a coil arc section skeleton and a coil straight section skeleton, so that a coil can be effectively matched with a winding tool to bind and fix the coil after the winding is finished without disassembling the tool; the outer side of the framework of the straight-line section of the coil is provided with a certain radian, so that the coil is not easy to loosen when being wound on the straight-line section and can bear larger tension.

Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A racetrack-type coil armature, comprising: the coil arc segment framework is a semicircular framework, and two ends of the coil arc segment framework are respectively connected with the coil straight segment framework to form a runway shape;

2. The coil former of claim 2 wherein the wound spacers are racetrack shaped with an inside shape that matches an outside shape of the coil arc segment former and the coil straight segment former.

3. The coil bobbin of claim 1, wherein through holes are formed at two ends of the coil arc segment bobbin and two ends of the coil straight segment bobbin respectively, and the through holes correspond to the through holes.

4. The bobbin of claim 3 wherein the coil segment bobbin has a recess on each of the two semicircular end faces.

5. The coil former of claim 4 wherein the coil straight segment former is a linear structure having a boss at each end, the boss being sized to fit into a recess at each end of the coil arc segment former.

6. The coil bobbin of claim 4, wherein the through holes at two ends of the coil straight section bobbin are positioned on the boss, and the through holes at two ends of the coil arc section bobbin are perpendicular to the groove.

7. The bobbin of claim 1 wherein the wound gasket is a piece of composite material in the shape of a racetrack.