A connection structure for a superconducting cable former

Abstract

The application provides a connecting structure for superconducting cable framework, which comprises a connecting clamp and a connecting sleeve. The connecting clamp is in the shape of a hollow tube, and is provided with an elastic part, a limiting baffle and a stop lever. The elastic part is arranged in the middle of the connecting clamp, and is fixed to one inner wall of the connecting clamp at one end and presses against the other inner wall of the connecting clamp at the other end. The limiting baffle is arranged outside the connecting clamp and is fixed to a superconducting cable framework. The stop lever is arranged outside the connecting clamp and extends into the connecting clamp and is fixed to the elastic part. The connecting sleeve is in the shape of a hollow tube, one end of which is fixed to another superconducting cable framework, and the other end is provided with a thickened layer on the inner wall. The inner diameter of the thickened layer is larger than the outer diameter of the connecting clamp and smaller than the outer diameter of the limiting baffle, and the axial length of the thickened layer is less than or equal to the distance between the limiting baffle and the stop lever. In the assembly, the stop lever is pressed into the connecting clamp, and after the assembly, the stop lever is exposed outside the connecting clamp and clamps the thickened layer. The application can realize the on-site rapid connection of the superconducting cable framework, thereby overcoming the problems caused by the traditional welding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power cable, in particular to a connecting structure for superconducting cable framework. BACKGROUND

[0002] Since the length of superconducting cable is limited by manufacturing and transportation, and in practical application, multiple superconducting cables need to be connected to form a longer line, so an intermediate joint is needed at this time. The intermediate joint connects two superconducting cables, so that the entire system can continuously transmit electric energy, and is an indispensable technical means and core component for the development of long-distance superconducting cable system and on-line maintenance of superconducting cable.

[0003] The intermediate joint refers to the part connecting two superconducting cables, which usually includes insulating materials, cooling systems, connectors and the like. However, before completing the connection of two superconducting cables by the intermediate joint, the superconducting cable frameworks need to be directly welded on site, which is not only difficult to operate and the welding quality cannot be guaranteed, but also the welding slag is easy to mix into the low-temperature circulating system. Therefore, the on-site rapid connection of superconducting cable frameworks is a problem to be solved. SUMMARY

[0004] The technical problem to be solved by the embodiments of the present application is to provide a connecting structure for superconducting cable framework, which can realize the on-site rapid connection of superconducting cable framework, thereby overcoming the problems brought by traditional welding.

[0005] In order to solve the above technical problems, the embodiments of the present application provide a connecting structure for superconducting cable framework, which comprises a connecting clamp and a connecting sleeve matched with each other; wherein,

[0006] The connecting clamp is in a hollow tubular shape, and is provided with an elastic part, a limiting baffle and a stop lever; wherein, the elastic part is arranged at the middle part of the connecting clamp, and comprises a first end fixed to an inner side wall of the connecting clamp and a second end pressed against another inner side wall of the connecting clamp along the radial direction of the connecting clamp; the limiting baffle is arranged outside the connecting clamp, and is circumferentially around the outer edge of one end port of the connecting clamp, and is fixed to a superconducting cable framework on the side surface away from the elastic part; one end of the stop lever is located outside the connecting clamp, and the other end is inserted into the inside of the connecting clamp and fixed to the elastic part and arranged close to the second end of the elastic part;

[0007] The connecting sleeve is in a hollow tubular shape, one end face of which is fixed to another superconducting cable framework, and the other end inner wall circumferentially surrounds and fixes an annular thickened layer; wherein, the inner diameter of the thickened layer is greater than the outer diameter of the connecting clamp and less than the outer diameter of the limiting baffle, and the axial length of the thickened layer is less than or equal to the spacing reserved between the limiting baffle and the stop lever.

[0008] The stopper is pressed into the inside of the connecting clamp, and after the connecting clamp and the connecting sleeve are assembled, the stopper is exposed outside the connecting clamp and located on the side of the thickened layer away from the limiting baffle, and the exposed length is greater than the gap reserved between the thickened layer and the connecting clamp.

[0009] The sealing member is arranged between the connecting clamp and the connecting sleeve, and is annular and installed on the side surface of the thickened layer facing the connecting clamp.

[0010] The sealing member is made of rubber.

[0011] The elastic component is an arc-shaped elastic steel sheet.

[0012] The length of the stopper is less than the inner radius of the connecting clamp.

[0013] The stopper is made of stainless steel and is fixed on the elastic steel sheet by welding.

[0014] The limiting baffle is integrally formed with the connecting clamp.

[0015] The connecting sleeve is integrally formed with the thickened layer.

[0016] The connecting clamp and the connecting sleeve are both made of stainless steel and are fixed together with the corresponding superconducting cable skeletons by welding.

[0017] The implementation of the embodiment of the present application has the following beneficial effects:

[0018] The present application quickly and conveniently connects two superconducting cable skeletons on site by using the connecting clamp and the connecting sleeve, and the stopper exposed outside the connecting clamp and clamped on the side of the thickened layer away from the limiting baffle, thereby overcoming the problems caused by traditional welding. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings obtained according to these drawings without creative labor are still within the scope of the present application.

[0020] Figure 1A structural schematic diagram before assembly of a connecting structure for a superconducting cable framework provided in an embodiment of the present application;

[0021] Figure 2 A structural schematic diagram after assembly of a connecting structure for a superconducting cable framework provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings.

[0023] As shown in Figure 1 and Figure 2 As shown in the drawings, a connecting structure for a superconducting cable framework provided in an embodiment of the present application comprises a connecting clamp 1 and a connecting sleeve 2 which cooperate with each other; wherein,

[0024] The connecting clamp 1 is made of stainless steel and has a hollow tubular shape, and is provided with an elastic component 11, a limiting baffle 12 and a stop lever 13; wherein, the elastic component 11 (such as a spring, an elastic steel sheet, etc.) is arranged at the middle part of the connecting clamp 1 and comprises a first end fixed (such as by welding) to an inner side wall of the connecting clamp 1 and a second end abutting against another inner side wall of the connecting clamp 1 along the radial direction of the connecting clamp 1; the limiting baffle 12 is made of stainless steel and is integrally formed with the connecting clamp 1, is arranged outside the connecting clamp 1, and is circumferentially arranged (i.e. in a ring shape) along the outer edge of one end port of the connecting clamp 1 and is fixed to a superconducting cable framework L1 (in a corrugated tube shape) on the side surface away from the elastic component 11; the stop lever 13 is made of stainless steel, one end of which is arranged outside the connecting clamp 1 and the other end of which is arranged inside the connecting clamp 1 through a pre-set through hole (not shown) of the connecting clamp 1, is fixed (such as by welding) to the elastic component 11 and is arranged close to the second end of the elastic component 11; at this time, the length of the stop lever 13 is less than the inner radius of the connecting clamp 1, which is the best;

[0025] The connecting sleeve 2 is made of stainless steel and has a hollow tubular shape, one end face (such as by welding) of which is fixed to another superconducting cable framework L2 (in a corrugated tube shape) and the other end inner wall of which is circumferentially fixed with an annular thickened layer 21; wherein, the thickened layer 21 is integrally formed with the connecting sleeve 2, has an inner diameter greater than the outer diameter of the connecting clamp 1 and less than the outer diameter of the limiting baffle 12, and has an axial length less than or equal to the spacing reserved between the limiting baffle 12 and the stop lever 13, so that the thickened layer 21 can be arranged outside the connecting clamp 1 and be limited by the limiting baffle 12 and the stop lever 13 without falling off;

[0026] In the assembling of the connecting piece 1 and the connecting sleeve 2, the stopper 13 is pressed into the interior of the connecting piece 1; after the assembling of the connecting piece 1 and the connecting sleeve 2, the stopper 13 is exposed outside the connecting piece 1 and located on the side of the thickened layer 21 away from the limiting stopper 12, and the exposed length is greater than the gap reserved between the thickened layer 21 and the connecting piece 1.

[0027] In the embodiment of the present application, in order to ensure the firmness of the assembling between the connecting piece 1 and the connecting sleeve 2, the connecting structure further comprises a sealing piece 3 made of rubber; the sealing piece 3 is arranged between the connecting piece 1 and the connecting sleeve 2, and is annular and installed on the side surface of the thickened layer 21 facing the connecting piece 1, so that the gap between the thickened layer 21 or the connecting sleeve 2 and the limiting stopper 12 is reduced, and the thickened layer 21 is firmly clamped between the limiting stopper 12 and the stopper 13.

[0028] The working principle of the connecting structure for the superconducting cable framework in the embodiment of the present application is as follows: during the connecting, the stopper 13 is pressed to deform the elastic component 11, the stopper 13 is retracted into the interior of the connecting piece 1, and the connecting piece 1 is continuously driven to be inserted into the connecting sleeve 2; when the connecting sleeve 2 reaches the limiting stopper 12 of the connecting piece 1, the stopper 13 is driven to be exposed outside the connecting piece 1 and clamped on the side surface of the thickened layer 21 away from the limiting stopper 12 due to the recovery of the elastic component 11, so that the two superconducting cable frameworks are quickly connected on site. At this time, the connecting piece 1 and the connecting sleeve 2 are spliced, the sealing piece 3 is pressed to deform and seal the gap between them.

[0029] Conversely, during the disassembling, the stopper 13 is pressed to deform the elastic component 11, the stopper 13 is retracted into the interior of the connecting piece 1, and the connecting piece 1 is continuously driven to be separated from the connecting sleeve 2, so that the thickened layer 21 of the connecting sleeve 2 is separated from the connecting piece 1. At this time, the stopper 13 is driven to be exposed outside the connecting piece 1 due to the recovery of the elastic component 11, and the initial state is restored.

[0030] The embodiment of the present application has the following beneficial effects:

[0031] The present application quickly matches and assembles by the connecting piece and the connecting sleeve, and quickly connects the two superconducting cable frameworks on site by the stopper exposed outside the connecting piece and clamped on the side of the thickened layer away from the limiting stopper, so that the problems caused by the traditional welding are overcome.

[0032] The above only discloses the preferred embodiment of the present application, and of course cannot limit the scope of the right of the present application, so the equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A connection structure for use on a superconducting cable former, characterized by, The connecting sleeve and the connecting card are matched with each other. The connecting card is a hollow tube, and is provided with an elastic part, a limiting baffle and a stop lever. The elastic part is arranged in the middle of the connecting card, and includes a first end fixed to an inner side wall of the connecting card and a second end pressed against another inner side wall of the connecting card along the radial direction of the connecting card. The limiting baffle is arranged outside the connecting card, and is circumferentially arranged along the outer edge of one end of the connecting card, and is fixed to a superconducting cable framework on the side away from the elastic part.

2. A connection structure for use in a superconducting cable former according to claim 1, wherein The stop lever is arranged outside the connecting card at one end, and is arranged inside the connecting card at the other end, and is fixed to the elastic part and arranged close to the second end of the elastic part. The connecting sleeve is a hollow tube, and one end of the connecting sleeve is fixed to another superconducting cable framework, and the other end of the connecting sleeve is circumferentially fixed with an annular thickened layer.

3. A connection structure for use in a superconducting cable former according to claim 2, wherein The inner diameter of the thickened layer is greater than the outer diameter of the connecting card and less than the outer diameter of the limiting baffle, and the axial length of the thickened layer is less than or equal to the spacing reserved between the limiting baffle and the stop lever.

4. A connection structure for use in a superconducting cable former according to claim 3, wherein When the connecting card and the connecting sleeve are assembled, the stop lever is pressed into the inside of the connecting card.

5. A connection structure for use in a superconducting cable former according to claim 4, wherein When the connecting card and the connecting sleeve are assembled, the stop lever is exposed outside the connecting card and located on the side of the thickened layer away from the limiting baffle, and the exposed length of the stop lever is greater than the gap reserved between the thickened layer and the connecting card.

6. A connection structure for use in a superconducting cable former according to claim 5, wherein Further comprising:

7. A connection structure for use in a superconducting cable former according to claim 6, wherein A sealing member, wherein the sealing member is arranged between the connecting card and the connecting sleeve, and is annular and installed on the side of the thickened layer facing the connecting card.

8. A connection structure for use in a superconducting cable former according to claim 7, wherein The sealing member is made of rubber.

9. A connection structure for use in a superconducting cable former according to claim 8, wherein The elastic part is an arc-shaped elastic steel sheet. The length of the stop lever is less than the inner radius of the connecting card. The stop lever is made of stainless steel and is fixed to the elastic steel sheet by welding. The limiting baffle is integrally formed with the connecting card. The connecting sleeve is integrally formed with the thickened layer. The connecting card and the connecting sleeve are both made of stainless steel, and are both fixed to the corresponding superconducting cable framework by welding.

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