CN219226755U - Separable connector and switch equipment with same - Google Patents

Abstract

The utility model relates to a separable connector and a switching device having the same. The separable connector for connecting a cable to a switching device, comprising: a connector body having a mounting cavity extending from a first end to a second end; a conductive connecting rod disposed within the mounting cavity adjacent the first end of the connector body; a terminal disposed within the mounting cavity adjacent the second end of the connector body and connected to the conductive connecting rod, an end of the terminal remote from the conductive connecting rod being threadably connected to the cable; a stress control element removably clamped between the connector body and the cable.

Description

Separable connector and switch equipment with same

Technical Field

The utility model relates to the technical field of power equipment, in particular to a separable connector and a switch device with the same.

Background

As the demand for electricity increases, separable connectors are becoming increasingly popular as an integral power cable accessory for use in power distribution systems to connect cables to switchgear such as gas insulated switchgear cabinets, ring main units, cable branch boxes, and the like. Separable connectors, such as elbow-type or straight-type separable connectors, typically include a connector body having a corresponding shape and corresponding conductors connected to the connector body for connection to a mating sleeve on a switching device and a cable to be connected to the switching device. However, the separable connector in the prior art is usually connected to the desired cable by crimping, which obviously has the problems of loose connection and easy loosening, and may cause a defect of reduced connection reliability between the cable and the switchgear.

There is therefore a need in the art for a reliable and reliable separable connector and a corresponding switching device.

Disclosure of Invention

The present utility model aims to provide a separable connector that solves at least some of the problems described above.

The present utility model also aims to provide a switching device employing the improved separable connector described above.

According to one aspect of the present utility model, there is provided a separable connector for connecting a cable to a switching device, the separable connector comprising: a connector body having a mounting cavity extending from a first end to a second end; a conductive connecting rod disposed within the mounting cavity adjacent the first end of the connector body; a terminal disposed within the mounting cavity adjacent the second end of the connector body and connected to the conductive connecting rod, an end of the terminal remote from the conductive connecting rod being threadably connected to the cable; a stress control element removably clamped between the connector body and the cable.

Compared with the prior art, the connecting terminal in the separable connector is connected with the cable in a threaded connection mode, so that the connection strength between the separable connector and the cable is greatly enhanced. In addition, the separable connector can be provided with the stress control element or removed according to the requirement, so that not only can the electric field be uniform through the stress control element, but also the separable connector can be connected with cables with different diameters, and the application range of the separable connector is improved.

Preferably, the connector body includes an outer shield layer, an insulation layer located inside the outer shield layer, and an inner shield layer located inside the insulation layer.

Preferably, the inner shielding layer has an inner diameter of 27.9 to 33.5 millimeters with respect to the section of the cable.

Preferably, the stress control element is a stress cone having an inner diameter of 15.5 mm to 18.5 mm or 17.5 to 21.0 mm or 20.0 mm to 24.0 mm or 23.5 mm to 28.7 mm.

Preferably, the separable connector is an elbow-type separable connector or a straight-type separable connector.

Preferably, the conductive connecting rod is screwed to or integral with the terminal.

Preferably, the conductive connecting rod is a finger connection slidingly connected to the switching device.

Preferably, a blind threaded hole in threaded connection with the conductive layer of the cable is formed in one end, adjacent to the cable, of the connecting terminal.

According to one aspect of the present utility model there is also provided a switching device having the separable connector described above mounted thereon.

Additional features and advantages of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following, or may be learned from practice of the utility model.

Drawings

Embodiments of the present utility model are described in detail below with reference to the attached drawing figures, wherein:

fig. 1 is a cross-sectional view of a first embodiment of a separable connector in accordance with the present utility model;

fig. 2 is a cross-sectional view of a second embodiment of a separable connector in accordance with the present utility model.

Reference numerals illustrate:

10-a separable connector; 11-a connector body; 111-a mounting cavity; 112-an outer shielding layer; 113-an insulating layer; 114-an inner shielding layer; 12-conductive connecting rods; 13-connecting terminals; 14-a cable; 141-a conductive layer; 15-stress control element.

Detailed Description

Referring now to the drawings, illustrative versions of the disclosed separable connector are described in detail. Although the drawings are provided to present some embodiments of the utility model, the drawings are not necessarily to scale and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the present disclosure. The position of part of components in the drawings can be adjusted according to actual requirements on the premise of not affecting the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification do not necessarily refer to all figures or examples.

Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below" and other directional terms, will be understood to have their normal meaning and refer to those directions as they would be when viewing the drawings. Unless otherwise indicated, directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.

The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

The terms "joined," "connected," and the like as used herein, include both two components being indirectly joined together by means of an intermediate layer such as an adhesive, a solder, or the like, or an intermediate member such as a connecting member, a transition member, or the like, and also two components being directly joined together without any intermediate layer such as an adhesive, a solder, or the like, or an intermediate member such as a connecting member, a transition member, or the like.

Fig. 1-2 show by way of example a separable connector 10 of the present utility model, the separable connector 10 of this example being useful for connecting a cable 14 to a switchgear, convenient to operate, strong to connect, and of wide applicability. As shown, the separable connector 10 of the present utility model can include a connector body 11, a conductive connecting rod 12, a wire terminal 13, and a stress control element 15.

In particular, the connector body 11 may have a mounting cavity 111 extending from a first end to a second end for receiving the conductive connecting rod 12 and the terminal 13 electrically connected to each other, the conductive connecting rod 12 being placed adjacent the first end of the connector body 11 for connection to an adapter sleeve of a switching device inserted from a first side of the detachable connector 10, and the terminal 13 being placed adjacent the second end of the connector body 11 for connection to a cable 14 inserted from a second side of the detachable connector 10. Thereby, a reliable current path can be formed between the cable 14 and the switching device via the detachable connector 10.

For the elbow-type separable connector 10 shown in fig. 1, the mounting cavity 111 of the separable connector 10 can include a longitudinal mounting cavity 111 and a transverse mounting cavity 111 in communication with the top of the longitudinal mounting cavity 111. The terminal 13 may be inserted into the connector body 11 from the bottom of the longitudinal mounting cavity 111 until abutting against the inner wall of the transverse mounting cavity 111. The conductive connecting rod 12 can be inserted into the connector body 11 from the opening of the transverse mounting cavity 111 to be connected with the connection terminal 13, such as screw connection, thereby forming a reliable current path between the conductive connecting rod 12 and the connection terminal 13.

For the straight separable connector 10 of fig. 2, the mounting cavity 111 of the separable connector 10 is longitudinal, and the conductive connecting rod 12 can be positioned at the top of the terminal 13 to be integral with the terminal 13 so as to be inserted into the connector body 11 from the bottom of the mounting cavity 111. The conductive connecting rod 12 in this embodiment may be connected with the connecting terminal 13 by a screw thread according to practical situations.

The end of the terminal 13 adjacent the cable 14 is provided with a blind threaded hole, either the separable connector 10 shown in fig. 1 or fig. 2. The insulating outer layer of the section of the cable 14 inserted into the separable connector 10 can be stripped to expose the conductive layer 141 of the cable 14, and the outer surface of the conductive layer 141 of the cable 14 is formed with an external thread fitted with the internal thread of the blind threaded hole, so that the conductive layer 141 of the cable 14 can be screwed into the blind threaded hole, whereby the cable 14 and the connection terminal 13 are connected to each other by means of a mechanical bolt, and the connection strength is improved.

In addition, a stress control element 15 such as a stress cone may be sleeved to the outer circumference of the insulating outer layer of the cable 14 and within the connector body 11, the stress control element 15 thus being clamped between the connector body 11 and the cable 14 to uniformly separate the electric field distribution of the connector 10. In case the inner diameter of the connector body 11 is substantially equal to the outer diameter of the cable 14, the cable 14 may have its insulating outer layer directly against the connector body 11 when connected to the terminal 13, without the need for the stress control element 15. In the case where the inner diameter of the connector body 11 is larger than the outer diameter of the cable 14, the stress control member 15 may be mounted to the cable 14, and then the cable 14 is inserted into the connector body 11 together with the stress control member 15. The outer diameter of the cable 14, to which the stress control element 15 is mounted, may be adapted to the inner diameter of the connector body 11. Obviously, for cables 14 having different outer diameters, correspondingly different sized stress control elements 15 may be employed, both fitted into the same separable connector 10. In this way, the range of applicability of the separable connector 10 of the present utility model is greatly enhanced.

Alternatively, the inner diameter of the connector body 11 may be 27.9 mm to 33.5 mm, and the stress controlling member 15 may be a stress cone having an inner diameter of 15.5 mm to 18.5 mm or 17.5 to 21.0 mm or 20.0 mm to 24.0 mm or 23.5 mm to 28.7 mm, particularly corresponding to different types of stress cones in practical use.

Alternatively, the connector body 11 may include an outer shielding layer 112, an insulating layer 113 positioned inside the outer shielding layer 112, and an inner shielding layer 114 positioned inside the insulating layer 113. As shown in fig. 1 and 2, the outer shielding layer 112 extends continuously from the first end to the second end of the separable connector 10, the insulating layer 113 may extend continuously from a section of the outer shielding layer 112 opposite the second end of the stress control element 15 until beyond the conductive connecting rod 12, and the inner shielding layer 114 may extend continuously from a portion of the insulating layer 113 corresponding to the first end of the stress control element 15 to approximately the middle of the conductive connecting rod 12, such that the conductive connecting rod 12 may be exposed for connection with a bushing of a switchgear. Preferably, the conductive connecting rod 12 may be a contact finger connector, so as to be convenient to connect with a sleeve of the switchgear in a plugging manner, and is convenient to install and high in efficiency.

It should be understood that although the present disclosure has been described in terms of various embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the various embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model. Any equivalent alterations, modifications and combinations thereof will be effected by those skilled in the art without departing from the spirit and principles of this utility model, and it is intended to be within the scope of the utility model.

Claims (9)

1. A separable connector (10) for connecting a cable (14) to a switchgear, the separable connector (10) comprising:

a connector body (11) having a mounting cavity (111) extending from a first end to a second end;

-an electrically conductive connecting rod (12) arranged within the mounting cavity (111) adjacent to a first end of the connector body (11);

-a terminal (13) arranged within the mounting cavity (111) adjacent to the second end of the connector body (11) and connected to the conductive connecting rod (12), the terminal (13) being threaded to the cable (14) at an end remote from the conductive connecting rod (12);

a stress control element (15) which is detachably clamped between the connector body (11) and the cable (14).

2. The separable connector (10) of claim 1, wherein the connector body (11) comprises an outer shielding layer (112), an insulating layer (113) located inside the outer shielding layer (112), and an inner shielding layer (114) located inside the insulating layer (113).

3. The separable connector (10) of claim 2, wherein the inner shielding layer (114) has an inner diameter of 27.9 millimeters to 33.5 millimeters relative to the section of the cable (14).

4. A separable connector (10) according to claim 3, wherein the stress control element (15) is a stress cone having an inner diameter of 15.5 mm to 18.5 mm or 17.5 to 21.0 mm or 20.0 mm to 24.0 mm or 23.5 mm to 28.7 mm.

5. The detachable connector (10) according to claim 1, wherein the detachable connector (10) is an elbow type detachable connector or a straight type detachable connector.

6. The separable connector (10) of claim 5, wherein the conductive connecting rod (12) is threaded to the terminal (13) or integral with the terminal (13).

7. The separable connector (10) of claim 1, wherein the conductive connecting rod (12) is a finger connection that is slidably connected to the switching device.

8. The separable connector (10) according to claim 1, wherein an end of the terminal (13) adjacent to the cable (14) is provided with a blind threaded hole that is threaded with the conductive layer (141) of the cable (14).

9. A switchgear characterized in that it has mounted thereon a separable connector (10) according to any one of claims 1 to 8.

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