CN219477577U

CN219477577U - Tail pipe with double-layer sealing structure

Info

Publication number: CN219477577U
Application number: CN202320024398.7U
Authority: CN
Inventors: 唐文博; 周海; 夏璇; 周凌云; 周世佳; 贺子豪; 徐思旸
Original assignee: Changlan Cable Accessories Co Ltd
Current assignee: Long Cable Technology Group Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-08-04
Anticipated expiration: 2033-01-05

Abstract

The utility model discloses a tail pipe with a double-layer sealing structure, which comprises an upper tail pipe and a lower tail pipe. The head of the upper tail pipe is connected with the cable accessory, and the tail of the upper tail pipe is sealed with the cable insulation shield of the cable; the head of the lower tail pipe is connected with the tail of the upper tail pipe, a sealing structure is arranged at the joint of the lower tail pipe and the upper tail pipe, and the tail of the lower tail pipe is sealed with the cable metal shield of the cable. The utility model of the embodiment is applied to divide the tail pipe into the upper tail pipe and the lower tail pipe, a sealing structure is arranged between the upper tail pipe and the lower tail pipe, and the double-layer sealing among the upper tail pipe, the lower tail pipe and the cable can be realized by adding an independent sealing structure arranged on the cable insulation shield and the cable metal shield; and if the sealing of the tail part of the lower tail pipe fails, the sealing structure between the upper tail pipe and the lower tail pipe still exists, and the sealing of the cable accessory can still be realized. The utility model has high sealing reliability and high line operation safety.

Description

Tail pipe with double-layer sealing structure

Technical Field

The utility model relates to the field of high-voltage cable accessories, in particular to a tail pipe with a double-layer sealing structure.

Background

The tail pipe in the high-voltage cable accessory is used for various products such as a GIS terminal, an indoor and outdoor terminal, an intermediate joint and the like, and the tail pipe plays roles of leading out a grounding wire, sealing, waterproofing, dust prevention and the like in the cable accessory product. The existing tail pipe structure is that the front end of the tail pipe is fixedly connected to the tail part of a cable accessory through a flange bolt, and a sealing ring is embedded in the flange to realize front end sealing; the tail pipe is fixed and sealed at the rear part of the tail pipe through lead sealing.

Due to the passing of the grounding current, once water inflow is carried out at the rear end of the tail pipe, a grounding passage is formed between the copper tail pipe and the cable aluminum sheath, so that the cable aluminum sheath is corroded and aged, meanwhile, moisture can enter the tail part of the stress cone to influence the normal operation of a product, and faults are finally caused near the tail pipe aluminum sheath or at the tail part of the stress cone to influence the operation of a circuit.

At present, the tail part of the tail pipe is of a single-layer sealing structure, the sealing mode is lead sealing, the sealing reliability depends on the standard construction and lead sealing proficiency of an installer in the earlier stage, and the sealing instability of the tail end of the tail pipe exists.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the tail pipe with the double-layer sealing structure, which can improve the sealing stability of the tail pipe.

A tail pipe with a double-layer sealing structure according to an embodiment of the utility model comprises an upper tail pipe and a lower tail pipe. The head of the upper tail pipe is connected with the cable accessory, and the tail of the upper tail pipe is sealed with the cable insulation shield of the cable; the head of the lower tail pipe is connected with the tail of the upper tail pipe, a sealing structure is arranged at the joint of the lower tail pipe and the upper tail pipe, and the tail of the lower tail pipe is sealed with the cable metal shield of the cable.

The tail pipe with the double-layer sealing structure has at least the following beneficial effects:

the utility model of the embodiment is applied to divide the tail pipe into the upper tail pipe and the lower tail pipe, a sealing structure is arranged between the upper tail pipe and the lower tail pipe, and the independent sealing structure is arranged on the cable insulation shield and the cable metal shield, so that double-layer sealing among the upper tail pipe, the lower tail pipe and the cable can be realized, and the possibility that water vapor possibly existing in the cable metal shield enters the cable accessory can be effectively reduced; and if the sealing of the tail part of the lower tail pipe fails, the sealing structure between the upper tail pipe and the lower tail pipe still exists, and the sealing of the cable accessory can still be realized. The utility model has high sealing reliability and high line operation safety.

According to some embodiments of the utility model, the lower tailpipe is detachably connected to the upper tailpipe.

According to some embodiments of the utility model, the tail of the upper tailpipe is provided with a first flange, and the first flange and the head of the lower tailpipe are connected by bolts.

According to some embodiments of the utility model, the sealing structure comprises a first sealing ring embedded in the first flange.

According to some embodiments of the utility model, the cable passes through the first flange and a conical second sealing ring is arranged between the cable and the first flange.

According to some embodiments of the utility model, the second sealing ring is pressed against the first flange by a second flange.

According to some embodiments of the utility model, the head of the upper tail pipe is provided with a third flange, through which the upper tail pipe is connected with the cable accessory.

According to some embodiments of the utility model, the third flange is embedded with a third sealing ring.

According to some embodiments of the utility model, a lead sealing layer is arranged between the tail part of the lower tail pipe and the cable metal shielding.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of a tail pipe with a double-layer sealing structure according to an embodiment of the present utility model;

reference numerals:

101. an upper tail pipe; 102. a lower tail pipe; 103. a first flange; 104. a first seal ring; 105. a cable; 106. a second seal ring; 107. a second flange; 108. a third flange; 109. sealing the lead sealing layer; 110. the cable is metallic shielded.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Referring to fig. 1, a tail pipe of a double seal structure according to an embodiment of the present utility model includes an upper tail pipe 101 and a lower tail pipe 102. The head of the upper tail pipe 101 is connected with a cable accessory, and the tail of the upper tail pipe 101 is sealed with a cable insulation shield of the cable 105; the head of the lower tail pipe 102 is connected with the tail of the upper tail pipe 101, a sealing structure is arranged at the joint of the lower tail pipe 102 and the upper tail pipe 101, and the tail of the lower tail pipe 102 is sealed with the cable metal shielding 110 of the cable 105.

By applying the utility model of the embodiment, the tail pipe is divided into the upper tail pipe 101 and the lower tail pipe 102, a sealing structure is arranged between the upper tail pipe 101 and the lower tail pipe 102, and the independent sealing structure arranged on the cable insulation shield and the cable metal shield 110 is added, so that double-layer sealing among the upper tail pipe 101, the lower tail pipe 102 and the cable 105 can be realized, and the possibility that water vapor possibly existing in the cable metal shield 110 enters the cable accessories can be effectively reduced; and, if the seal at the tail of the lower tail pipe 102 fails, but the seal structure between the upper tail pipe 101 and the lower tail pipe 102 still exists, the seal of the cable accessory can still be realized.

The utility model has high sealing reliability and high line operation safety.

In some embodiments of the utility model, the lower tailpipe 102 is removably attached to the upper tailpipe 101. If the seal of the lower tailpipe 102 fails, the lower tailpipe 102 may be replaced to improve the reliability of the seal of the present utility model.

In some embodiments of the present utility model, the tail portion of the upper tailpipe 101 is provided with a first flange 103, and the first flange 103 and the head portion of the lower tailpipe 102 are connected by bolts. In this embodiment, the upper tail pipe 101 and the lower tail pipe 102 are convenient to assemble and disassemble, and the assembling and disassembling efficiency is high.

In some embodiments of the utility model, the sealing structure comprises a first sealing ring 104 embedded in the first flange 103. The first seal ring 104 can ensure a good sealing effect.

In some embodiments of the utility model, the cable 105 passes through the first flange 103 and a tapered second seal 106 is provided between the cable and the first flange 103.

In some embodiments of the utility model, the second sealing ring 106 is pressed against the first flange 103 by the second flange 107. The second sealing ring 106 can be firmly installed on the first flange 103, axial sealing is achieved, and sealing effect is further improved.

In some embodiments of the present utility model, the head of the upper tail pipe 101 is provided with a third flange 108, and the upper tail pipe 101 is connected to the cable accessory through the third flange 108.

In some embodiments of the utility model, a third seal ring is embedded within the third flange 108.

In some embodiments of the utility model, a lead sealing layer 109 is provided between the tail of the lower tailpipe 102 and the cable metal shield 110.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A tailpipe of a double-layer seal structure, comprising:

the head part of the upper tail pipe is connected with the cable accessory, and the tail part of the upper tail pipe is sealed with the cable insulation shield of the cable;

the head of the lower tail pipe is connected with the tail of the upper tail pipe, a sealing structure is arranged at the joint of the lower tail pipe and the upper tail pipe, and the tail of the lower tail pipe is sealed with the cable metal shield of the cable.

2. The double seal structured tailpipe according to claim 1, wherein: the lower tailpipe is detachably connected to the upper tailpipe.

3. The tail pipe of the double seal structure according to claim 2, wherein: the tail part of the upper tail pipe is provided with a first flange, and the first flange is connected with the head part of the lower tail pipe through bolts.

4. A tailpipe of a double seal structure according to claim 3, wherein: the sealing structure comprises a first sealing ring embedded in the first flange.

5. The double seal tailpipe according to claim 4, wherein: the cable passes through the first flange and is provided with a conical second sealing ring between the cable and the first flange.

6. The double seal tailpipe according to claim 5, wherein: the second sealing ring is tightly pressed on the first flange through the second flange.

7. The double seal structured tailpipe according to claim 1, wherein: the head of the upper tail pipe is provided with a third flange, and the upper tail pipe is connected with the cable accessory through the third flange.

8. The double seal tailpipe according to claim 7, wherein: and a third sealing ring is embedded in the third flange.

9. The double seal tailpipe according to claim 7, wherein: and a lead sealing layer is arranged between the tail part of the lower tail pipe and the cable metal shield.