Assembly structure of sleeve of environment-friendly gas insulated switchgear

Abstract

The utility model discloses an assembling structure of an environment-friendly gas insulated switchgear casing pipe, which comprises a casing pipe assembly, an installation fastener, a radial sealing ring, an installation plate and a clamping plate which are mutually combined to play a role. When the assembling structure needs to replace a built-in external cone casing pipe, the clamping plate is firstly disassembled, the casing pipe assembly is screwed out, and the casing pipe assembly is screwed out; when the built-in outer cone sleeve is replaced, the old built-in outer cone sleeve on the sleeve nut is taken down and replaced by a new built-in outer cone sleeve, the cost of the cover plate is saved, the replacement step of the built-in outer cone sleeve is simplified, only some parts with small sizes are added, and the use cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of insulating switch equipment, in particular to an assembly structure of a bushing of an environmentally friendly gas insulating switch equipment. Background Art

[0002] There may be problems with the outer cone bushing being damaged due to improper cable installation at the project site. If an internal outer cone bushing is used, the bushing's mounting flange is inside the high-pressure air chamber, making it impossible to remove it from the mounting hole. It is necessary to remove other covers of the switchgear air chamber to replace the new bushing. Compared with the external outer cone bushing, the replacement process is relatively cumbersome, and the price and cost of the external outer cone bushing are much higher than those of the internal outer cone bushing.

[0003] For example, a Chinese patent with publication number CN205004244U discloses a sealed insulation structure of a high-voltage switch, which includes an incoming line bushing, an outgoing line bushing and an insulating sealing device. The incoming line bushing includes a conductive part 1 and an insulating part 1, and the insulating part 1 is fixedly installed on the outer wall of the conductive part 1. The outgoing line bushing includes a conductive part 2 and an insulating part 2, and the insulating part 2 is fixedly installed on the outer wall of the conductive part 2. The end of the conductive part 1 is fixed in the conductive part 2 by a fastener, and the insulating part 1 is inserted in the insulating part 2. The insulating sealing device is installed between the insulating part 1 and the insulating part 2. The insulating sealing device includes a sealing ring and an insulating medium. The two sealing rings are parallelly mounted on the insulating part 1, and the insulating medium is filled between the two sealing rings.

[0004] In summary, the existing sleeve assembly structure still has many disadvantages, including the need to open an additional cover to take out the sleeve when replacing the internal outer cone sleeve in the original structure, and the external outer cone sleeve is larger in volume than the internal outer cone sleeve and will use more copper and epoxy resin. How to simplify the replacement steps of the internal outer cone sleeve through structural design and further reduce the cost compared with the external outer cone sleeve. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an assembly structure for an environmentally friendly gas insulated switchgear bushing to solve the above problems.

[0006] In order to achieve the above objectives, the utility model is implemented through the following technical solutions.

[0007] The invention discloses an assembly structure of a bushing of an environmentally friendly gas insulated switchgear, comprising a bushing assembly, a mounting fastener, a radial sealing ring, a mounting plate, and a clamping plate. The bushing assembly is threadedly connected to the mounting plate, a retaining ring is provided on the inner side of the mounting plate, and two ends of the radial sealing ring are respectively fitted to connect the retaining ring and the bushing assembly. The bushing assembly comprises an internal outer cone bushing, an axial sealing ring, a bushing nut, and a bushing fastener. The axial sealing ring is nested in the internal outer cone bushing, the bushing nut is threadedly connected to the internal outer cone bushing, and one end is fitted with the axial sealing ring. The bushing nut is bolted to the internal outer cone bushing through a bushing fastener. When the internal outer cone bushing needs to be replaced in this assembly structure, the clamping plate is first removed, the bushing assembly is unscrewed, the old internal outer cone bushing on the bushing nut is removed and replaced with a new internal outer cone bushing, and the bushing can be reinstalled according to the above steps, thereby saving the cost of the cover plate and simplifying the replacement steps of the internal outer cone bushing. The structure only adds some small-volume parts, and the use cost is greatly reduced.

[0008] Preferably, the sleeve nut is a cylindrical structure.

[0009] Preferably, the outer circumferential front section of the sleeve nut is provided with an external thread.

[0010] Preferably, the rear section of the outer cylindrical surface of the sleeve nut is a sealing smooth surface.

[0011] Preferably, the interior of the built-in outer cone sleeve is provided with an internal thread that matches the external thread of the sleeve nut.

[0012] Preferably, the sleeve nut is provided with a countersunk hole adapted to the sleeve fastener, and the built-in outer cone sleeve is provided with a threaded hole adapted to the countersunk hole of the sleeve nut.

[0013] Preferably, both the mounting fastener and the sleeve fastener are bolts.

[0014] Preferably, the card plate is provided with a connecting hole and an adjusting hole.

[0015] Preferably, the connecting hole is fixedly connected to the sleeve assembly.

[0016] Preferably, a plurality of the adjustment holes are provided, and a mounting fastener is passed through one of the adjustment holes to fix the sleeve assembly to the mounting plate.

[0017] Compared with the prior art, the utility model discloses an assembly structure of an environmentally friendly gas-insulated switchgear bushing, including a bushing assembly, a mounting fastener, a radial sealing ring, a mounting plate, and a clamping plate. The five are used in combination with each other to play a role. When the assembly structure needs to replace the built-in outer cone bushing, first remove the clamping plate, unscrew the bushing assembly, remove the old built-in outer cone bushing on the bushing nut and replace it with a new built-in outer cone bushing, and then reinstall it according to the above steps, saving the cost of the cover plate and simplifying the replacement steps of the built-in outer cone bushing. The structure only adds some small-volume parts, and the use cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the assembly structure of the bushing of the environmentally friendly gas insulated switchgear of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the sleeve assembly of the utility model;

[0020] Figure 3 It is a schematic diagram of the structural installation of the sleeve assembly of the utility model;

[0021] Figure 4 It is a schematic diagram of the structural section of the sleeve assembly of the utility model;

[0022] Figure 5 It is a schematic diagram of the overall structure of the casing assembly of the utility model;

[0023] Figure 6 It is a partial enlarged structural schematic diagram of the sleeve assembly of the utility model. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] An assembly structure of an environmentally friendly gas insulated switchgear bushing, comprising a bushing assembly 1, a mounting fastener 2, a radial sealing ring 3, a mounting plate 4, and a clamping plate 5, wherein the bushing assembly 1 is threadedly connected to the mounting plate 4, a retaining ring is provided on the inner side of the mounting plate 4, and the two ends of the radial sealing ring 3 are respectively fitted to connect the retaining ring and the bushing assembly 1, the bushing assembly 1 comprises an internal outer cone bushing 11, an axial sealing ring 12, a bushing nut 13, and a bushing fastener 14, wherein the axial sealing ring 12 is nested in the internal outer cone bushing 11, the bushing nut 13 is threadedly connected to the internal outer cone bushing 11, and one end is fitted with the axial sealing ring 12, the bushing nut 13 is bolted to the internal outer cone bushing 11 through the bushing fastener 14, the bushing nut 13 is a cylindrical structure, and an outer front section of the outer circumference of the bushing nut 13 is provided with an outer Thread, the rear section of the outer cylindrical surface of the sleeve nut 13 is a sealing smooth surface, the interior of the built-in outer cone sleeve 11 is provided with an internal thread adapted to the external thread of the sleeve nut 13, the sleeve nut 13 is provided with a countersunk hole 131 adapted to the sleeve fastener 14, the built-in outer cone sleeve 11 is provided with a threaded hole 132 adapted to the countersunk hole 131 of the sleeve nut 13, the sleeve nut 13 and the built-in outer cone sleeve 11 are connected by bolts, the mounting fastener 2 and the sleeve fastener 14 are both bolts, the clamping plate 5 is provided with a connecting hole 51 and an adjusting hole 52, the connecting hole 51 is fixedly connected to the corresponding hole on the sleeve nut 13 of the sleeve assembly 1, the adjusting hole 52 is provided with a plurality of, and the mounting fastener 2 is penetrated through one of the adjusting holes 52 to fix the sleeve assembly 1 on the mounting plate 4.

[0026] The front section of the mounting plate 4 is processed with internal threads, and a retaining ring is provided on the inner side of the rear section, and a radial sealing ring 3 is placed inside the retaining ring. The sleeve assembly 1 is screwed into the mounting plate 4 until the front end surface of the sleeve nut 13 is flush with the surface of the mounting plate 4. At this time, the built-in outer cone sleeve 11 fits with the radial sealing ring 3 to play an airtight role. During installation, a suitable adjustment hole 52 can be selected, and then after determining the position, the mounting fastener 2 is used to fix it in the threaded hole 132 of the mounting plate 4. The clamping plate 5 serves to prevent the sleeve assembly 1 from rotating. When the sleeve needs to be replaced, the opposite steps are adopted. First, the clamping plate 5 is removed, the sleeve assembly 1 is screwed out, the old built-in outer cone sleeve 11 on the sleeve nut 13 is removed and replaced with a new built-in outer cone sleeve 11, and then it can be installed again according to the above steps.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0029] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An assembly structure for an environmentally friendly gas-insulated switchgear bushing, characterized in that: The invention comprises a sleeve assembly (1), a mounting fastener (2), a radial sealing ring (3), a mounting plate (4), and a clamping plate (5). The sleeve assembly (1) is threadedly connected to the mounting plate (4). A retaining ring is provided on the inner side of the mounting plate (4). The two ends of the radial sealing ring (3) are respectively fitted to connect the retaining ring and the sleeve assembly (1). The sleeve assembly (1) comprises an internal outer cone sleeve (11), an axial sealing ring (12), a sleeve nut (13), and a sleeve fastener (14). The axial sealing ring (12) is nested in the internal outer cone sleeve (11). The sleeve nut (13) is threadedly connected to the internal outer cone sleeve (11), and one end of the sleeve nut (13) is fitted to the axial sealing ring (12). The sleeve nut (13) is bolted to the internal outer cone sleeve (11) via the sleeve fastener (14).

2. The assembly structure of the bushing of the environmentally friendly gas insulated switchgear according to claim 1 is characterized in that: The sleeve nut (13) is a cylindrical structure.

3. The assembly structure of the bushing of the environmentally friendly gas insulated switchgear according to claim 2 is characterized in that: The outer circumferential front section of the sleeve nut (13) is provided with an external thread.

4. The assembly structure of the bushing of the environmentally friendly gas insulated switchgear according to claim 3 is characterized in that: The rear section of the outer cylindrical surface of the sleeve nut (13) is a sealing smooth surface.

5. The assembly structure of the bushing of the environmentally friendly gas insulated switchgear according to claim 4 is characterized in that: The internally mounted outer cone sleeve (11) is provided with an internal thread which matches the external thread of the sleeve nut (13).

6. The assembly structure of the bushing of the environmentally friendly gas insulated switchgear according to claim 1, characterized in that: The sleeve nut (13) is provided with a countersunk hole (131) adapted to the sleeve fastener (14), and the internally mounted outer cone sleeve (11) is provided with a threaded hole (132) adapted to the countersunk hole (131) of the sleeve nut (13).

7. The assembly structure of the bushing of the environmentally friendly gas insulated switchgear according to claim 1 is characterized in that: Both the mounting fastener (2) and the sleeve fastener (14) are bolts.

8. The assembly structure of the bushing of the environmentally friendly gas insulated switchgear according to claim 1, characterized in that: The clamping plate (5) is provided with a connecting hole (51) and an adjusting hole (52).

9. The assembly structure of the bushing of the environmentally friendly gas insulated switchgear according to claim 8, characterized in that: The connecting hole (51) is fixedly connected to the sleeve assembly (1).

10. The assembly structure of the bushing of the environmentally friendly gas insulated switchgear according to claim 9, characterized in that: A plurality of adjustment holes (52) are provided, and a mounting fastener (2) is passed through one of the adjustment holes (52) to fix the sleeve assembly (1) on the mounting plate (4).

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