Insulating sleeve of insulating pull rod of switchgear

Abstract

The utility model relates to an insulating sleeve of an insulating pull rod of a switch device, which comprises a rod body and an insulating outer layer arranged outside the rod body, the insulating outer layer is elastic, the outer peripheral wall of the insulating outer layer is provided with a deformation gap, the deformation gap is communicated with two ends of the insulating outer layer, and the deformation gap is provided with an opening. The insulating outer layer is provided with a sealing connection sheet at the deformation gap. According to the invention, the insulating sleeve is convenient to replace so as to utilize the old pull rod.

Description

Technical Field

[0001] This application relates to the technical field of grinding equipment, and particularly to an insulating sleeve for an insulating pull rod of a switching device. Background Art

[0002] An insulating pull rod is a connecting piece used in a switching device. Since its working environment is a high-voltage environment, its outer peripheral wall needs to be insulated. Usually, an insulating sleeve is sleeved on the outer peripheral wall. The insulating sleeve is usually a silica gel sleeve. After being used for a period of time, it will age. At this time, it needs to be replaced. The existing replacement method usually replaces the entire pull rod, while the rod body of the old pull rod still has a service life, which will cause waste of resources. Utility Model Content

[0003] In order to facilitate the replacement of the insulating sleeve to utilize the old pull rod, this application provides an insulating sleeve for an insulating pull rod of a switching device.

[0004] The insulating sleeve for an insulating pull rod of a switching device provided by this application adopts the following technical solutions:

[0005] An insulating sleeve for an insulating pull rod of a switching device includes a rod body and an insulating outer layer provided on the outside of the rod body. The insulating outer layer is elastically arranged. A deformation notch is formed on the outer peripheral wall of the insulating outer layer. The deformation notch communicates with both ends of the insulating outer layer. A sealing connection piece is arranged on the insulating outer layer at the deformation notch.

[0006] By adopting the above technical solutions, when the insulating outer layer ages, the old insulating outer layer can be disassembled, and a new insulating outer layer is wrapped around the outside of the rod body through the deformation notch, and then the deformation notch is hermetically connected through the sealing connection piece to form an insulating effect.

[0007] Optionally, a plurality of annular protrusions are arranged on the outer peripheral wall of the insulating outer layer. The annular protrusions extend from one side of the deformation notch to the other side of the deformation notch.

[0008] By adopting the above technical solutions, annular protrusions are arranged on the insulating outer layer, thereby increasing the creepage distance and further improving the insulating effect.

[0009] Optionally, retaining edges are arranged on both sides of the insulating outer layer at the insulating notch. Hook portions for hooking on the retaining edges are arranged on both sides of the sealing connection piece. The sealing connection piece is a heat-shrinkable sheet.

[0010] By adopting the above technical solutions, the hook portions are hooked on the retaining edges, and then the sealing connection piece is heated to make the sealing connection piece shrink, thereby fixing both ends of the deformation notch, making the insulating outer layer firmly wrap the rod body, and the retaining edges and the hook portions can improve the sealing performance.

[0011] Optionally, the insulating outer layer is a silica gel sleeve.

[0012] Optionally, a sealing piece is provided on one side of the insulating outer layer located at the deformation notch, and the length direction of the sealing piece is parallel to the length direction of the insulating outer layer.

[0013] By adopting the above technical solution, during installation, the sealing piece overlaps with the insulating outer layer, thereby improving the sealing performance of the insulating outer layer and thus enhancing the sealing effect.

[0014] Optionally, elastic rods are provided on the side of the retaining edge away from the insulating outer layer. A plurality of elastic rods are provided and distributed along the length direction of the insulating outer layer. Sealing strips are provided at the ends of the plurality of elastic rods, and the elastic rods force the sealing strips to abut against the inner wall of the engaging portion.

[0015] By adopting the above technical solution, elastic rods are provided. When the engaging portion is hooked on the retaining edge, the elastic rods force the sealing strips to abut against the inner wall of the engaging portion, thereby improving the sealing performance at the connection.

[0016] Optionally, the elastic rod is bent, the bending angle of the elastic rod is an acute angle, and one end of the elastic rod is fixed inside the retaining edge.

[0017] By adopting the above technical solution, the elastic rod is bent, and one end of the elastic rod is fixed inside the retaining edge to achieve installation.

[0018] In summary, the utility model has the following beneficial effects:

[0019] 1. When the insulating outer layer ages, the old insulating outer layer can be disassembled. The new insulating outer layer is wrapped around the outside of the rod body through the deformation notch, and then the deformation notch is hermetically connected through the sealing connection piece to form an insulating effect;

[0020] 2. During installation, the engaging portion is hooked on the retaining edge, and then the sealing connection piece is heated to cause the sealing connection piece to contract and apply a pulling force to the retaining edge, so that the insulating outer layer is firmly wrapped around the rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of this embodiment;

[0022] Figure 2 is an installation schematic diagram of the sealing connection piece in this embodiment;

[0023] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0024] In the figure, 1 is the rod body; 11 is the annular protrusion; 2 is the insulating outer layer; 21 is the deformation notch; 22 is the sealing piece; 23 is the retaining edge; 24 is the elastic rod; 25 is the sealing strip; 3 is the sealing connection piece; 31 is the hook portion;. Specific embodiments

[0025] The following will further elaborate on this application in conjunction with the attached Figures 1 - 3 drawings.

[0026] An embodiment of this application discloses an insulating sleeve for an insulating pull rod of a switchgear. Referring to Figure 1 and Figure 2 , it includes a rod body 1 and an insulating outer layer 2 provided outside the rod body 1. The insulating outer layer 2 is a silica gel sleeve. A deformation notch 21 is formed on the outer peripheral wall of the insulating outer layer 2. The deformation notch 21 communicates with both ends of the insulating outer layer 2. A sealing connection piece 3 is provided at the position of the insulating outer layer 2 where the deformation notch 21 is located. The deformation notch 21 is covered and connected by the sealing connection piece 3, so that the insulating outer layer 2 wraps the rod body 1.

[0027] Referring to Figure 2 and Figure 3 , retaining edges 23 are fixedly connected to both sides of the insulating outer layer 2 at the insulating notch. The length direction of the retaining edge 23 is parallel to the length direction of the insulating outer layer 2. Hook portions 31 for hooking on the retaining edge 23 are fixedly connected to both sides of the sealing connection piece 3. The sealing connection piece 3 is a heat shrinkable sheet. During installation, the hook portion 31 is hooked on the retaining edge 23, and then the sealing connection piece 3 is heated, so that the sealing connection piece 3 shrinks and applies a pulling force to the retaining edge 23, so that the insulating outer layer 2 firmly wraps the rod body 1.

[0028] Referring to Figure 2 and Figure 3 , a sealing piece 22 is fixedly connected to one side of the insulating outer layer 2 at the deformation notch 21. The length direction of the sealing piece 22 is parallel to the length direction of the insulating outer layer 2. When the insulating outer layer 2 wraps the rod body 1, the sealing piece 22 is arranged in an overlapping manner with the other side of the insulating outer layer 2, thereby improving the sealing performance of the insulating outer layer 2 to improve the insulation effect.

[0029] Referring to Figure 2 and Figure 3, on the side of the retaining edge 23 away from the insulating outer layer 2, there is an elastic rod 24. The elastic rod 24 is bent, and the bending angle of the elastic rod 24 is an acute angle. The lower end of the elastic rod 24 is fixedly connected inside the retaining edge 23. There are several elastic rods 24 distributed along the length direction of the insulating outer layer 2. The upper ends of the several elastic rods 24 are fixedly connected with a sealing strip 25. The elastic rod 24 forces the sealing strip 25 to abut against the inner wall of the engaging part 31. When the engaging part 31 is hooked on the retaining edge 23, the elastic rod 24 can force the sealing strip 25 to move away from the other elastic rod 24, so as to abut against the inner wall of the engaging part 31, and thus can improve the sealing performance of the connection part to improve the insulation effect.

[0030] Referring to Figure 1 , several annular protrusions 11 are convexly arranged on the outer peripheral wall of the insulating outer layer 2. The annular protrusions 11 extend from one side of the deformation notch 21 to the other side of the deformation notch 21. By providing the annular protrusions 11 on the insulating outer layer 2, the creepage distance is increased, and thus the insulation effect is improved. The thickness of the annular protrusion 11 gradually decreases along the direction away from the axis of the rod body 1, improving the strength of the root of the annular protrusion 11.

[0031] The implementation principle of the insulating sleeve of the insulating pull rod of the switchgear in the embodiment of the present application is as follows: When the insulating outer layer 2 ages, the old insulating outer layer 2 can be disassembled, the new insulating outer layer 2 is covered on the outside of the rod body 1 through the deformation notch 21, then the engaging part 31 on the sealing connection piece 3 is hooked on the retaining edge 23 of the insulating outer layer 2, and then the sealing connection piece 3 is heated to make the sealing connection piece 3 shrink and apply a pulling force to the retaining edge 23, so that the insulating outer layer 2 is firmly covered on the rod body 1.

[0032] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An insulating sleeve for an insulating pull rod of a switchgear, characterized in that: The invention comprises a rod body (1) and an insulating outer layer (2) arranged outside the rod body (1); the insulating outer layer (2) is elastically arranged; a deformation notch (21) is provided on the outer peripheral wall of the insulating outer layer (2); the deformation notch (21) is connected to two ends of the insulating outer layer (2); and a sealing connecting piece (3) is provided on the insulating outer layer (2) at the deformation notch (21).

2. The insulating sleeve of the insulating pull rod of a switch device according to claim 1, characterized in that: The outer peripheral wall of the insulating outer layer (2) is provided with a plurality of annular protrusions (11), and the annular protrusions (11) extend from one side of the deformation notch (21) to the other side of the deformation notch (21).

3. The insulating sleeve of the insulating pull rod of a switch device according to claim 1, characterized in that: The insulating outer layer (2) is provided with retaining edges (23) on both sides of the insulating gap, and hooking portions (31) for hooking on the retaining edges (23) are provided on both sides of the sealing connecting piece (3), and the sealing connecting piece (3) is a heat shrinkable piece.

4. The insulating sleeve of the insulating pull rod of a switch device according to claim 1, characterized in that: The insulating outer layer (2) is a silicone sleeve.

5. The insulating sleeve of the insulating pull rod of a switch device according to claim 3, characterized in that: A sealing sheet (22) is provided on one side of the deformation notch (21) of the insulating outer layer (2), and the length direction of the sealing sheet (22) is parallel to the length direction of the insulating outer layer (2).

6. The insulating sleeve of the insulating pull rod of a switch device according to claim 3, characterized in that: An elastic rod (24) is provided on the side of the retaining edge (23) away from the insulating outer layer (2), a plurality of the elastic rods (24) are provided and distributed along the length direction of the insulating outer layer (2), and sealing strips (25) are provided at the ends of the plurality of the elastic rods (24), and the elastic rods (24) force the sealing strips (25) to abut against the inner wall of the hooking portion (31).

7. The insulating sleeve of the insulating pull rod of a switch device according to claim 6, characterized in that: The elastic rod (24) is in a bent shape, the bending angle of the elastic rod (24) is an acute angle, and one end of the elastic rod (24) is fixed inside the retaining edge (23).

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