CN211405248U

CN211405248U - Double-sealing GIS shell

Info

Publication number: CN211405248U
Application number: CN201921870968.4U
Authority: CN
Inventors: 田江
Original assignee: Jiangsu Haida Electric Co ltd
Current assignee: Jiangsu Haida Electric Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-09-01
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses a dual seal formula GIS casing relates to GIS shell seal structure technical field. The utility model comprises a GIS shell, wherein branch cylinders are arranged on the peripheral side surface of the GIS shell, and one end of each branch cylinder is connected with a connecting end through threads; a first sealing ring is clamped between the branch cylinder and the opposite end surface of the connecting end; a second sealing ring is sleeved between the branch cylinder and the circumferential side surfaces of two ends of the connecting end; hoops are sleeved between the branch cylinders and the circumferential side surfaces of the two ends of the connecting end and positioned outside the second sealing rings; the two ends of the hoop are fixedly connected through bolts. The utility model discloses a cooperation of branch section of thick bamboo, intercommunication end, first sealing washer, second sealing washer and staple bolt is used, and when branch section of thick bamboo and link head threaded connection, first sealing washer seals branch section of thick bamboo and link head, and the staple bolt fastening carries out the secondary with second sealing washer and branch section of thick bamboo and intercommunication end junction and seals, has increased the gas tightness between branch section of thick bamboo and the intercommunication end, has improved the leakproofness of GIS casing.

Description

Double-sealing GIS shell

Technical Field

The utility model belongs to the technical field of GIS shell seal structure, especially, relate to dual seal formula GIS shell.

Background

The GIS is composed of a breaker, a disconnecting switch, a grounding switch, a mutual inductor, a lightning arrester, a bus, a connecting piece, an outgoing line terminal and the like, all the equipment or components are enclosed in a metal grounded shell, and SF6 insulating gas with certain pressure is filled in the metal grounded shell, so that the GIS is also called as an SF6 fully-closed combined electrical appliance.

The branch cylinder of the existing GIS shell is generally connected through a flange and a single annular sealing ring to form gas soft sealing, but the pressure in the GIS shell is high, so that gas leakage can be caused after long-time use, fire accidents are easily caused, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dual seal formula GIS casing uses through the cooperation of branch section of thick bamboo, intercommunication end, first sealing washer, second sealing washer and staple bolt, has solved the relatively poor problem of current GIS casing leakproofness.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a double-sealing GIS shell, which comprises a GIS shell, wherein a branch cylinder is arranged on the peripheral side surface of the GIS shell, and one end of the branch cylinder is connected with a connecting end through a thread; a first sealing ring is clamped between the branch cylinder and the opposite end surface of the connecting end; a second sealing ring is sleeved between the branch cylinder and the circumferential side surfaces of two ends of the connecting end; hoops are sleeved between the branch cylinders and the circumferential side surfaces of the two ends of the connecting end and positioned outside the second sealing rings; and the two ends of the hoop are fixedly connected through bolts.

Furthermore, an inner wall of one end of the branch cylinder is provided with an internal thread; one end face, close to the internal thread, of the branch cylinder is provided with a first annular clamping groove matched with the first sealing ring; and the side surfaces of the branch cylinders, which are close to one end of the internal thread, are respectively provided with a first limiting ring and a second limiting ring.

Furthermore, a threaded joint matched with the internal thread is arranged on one end face of the connecting end; a second annular clamping groove matched with the first sealing ring is formed in one end face of the connecting end and located on the outer side of the threaded joint; and the peripheral side surface of one end, close to the threaded joint, of the connecting end is provided with a third limiting ring and a fourth limiting ring respectively.

Furthermore, a first convex strip is arranged on the inner wall of one end of the hoop and between the first limiting ring and the second limiting ring; a second raised strip is arranged on the inner wall of the other end of the hoop and positioned between the second limiting ring and the fourth limiting ring; the hoop inner wall is located between the first protruding strips and the second protruding strips, and third protruding strips are arranged on the hoop inner wall.

The utility model discloses following beneficial effect has:

the utility model discloses a cooperation of branch section of thick bamboo, intercommunication end, first sealing washer, second sealing washer and staple bolt is used, and when branch section of thick bamboo and link head threaded connection, first sealing washer seals branch section of thick bamboo and link head, and the staple bolt fastening carries out the secondary with second sealing washer and branch section of thick bamboo and intercommunication end junction and seals, has increased the gas tightness between branch section of thick bamboo and the intercommunication end, has improved the leakproofness of GIS casing.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the double-sealed GIS housing of the present invention;

fig. 2 is a cross-sectional view of a double sealed GIS housing;

FIG. 3 is an enlarged view taken at A in FIG. 3;

FIG. 4 is a schematic structural view of a branching cylinder;

FIG. 5 is a schematic view of a connector termination;

FIG. 6 is a schematic structural view of the hoop;

in the drawings, the components represented by the respective reference numerals are listed below:

1-GIS shell, 2-branch cylinder, 3-connecting end, 4-first sealing ring, 5-second sealing ring, 6-hoop, 201-internal thread, 202-first ring groove, 203-first limiting ring, 204-second limiting ring, 301-threaded joint, 302-second ring groove, 303-third limiting ring, 304-fourth limiting ring, 601-first raised strip, 602-second raised strip and 603-third raised strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-6, the utility model relates to a double-sealed GIS housing, which comprises a GIS housing 1, a branch cylinder 2 is arranged on the peripheral surface of the GIS housing 1, and one end of the branch cylinder 2 is connected with a connecting end 3 by screw thread; a first sealing ring 4 is clamped between the opposite end faces of the branch cylinder 2 and the connecting end 3; a second sealing ring 5 is sleeved between the branch cylinder 2 and the circumferential side surfaces of two ends of the connecting end 3; a hoop 6 is sleeved between the branch cylinder 2 and the circumferential side surfaces of two ends of the connecting end 3 and positioned outside the second sealing ring 5; the two ends of the hoop 6 are fixedly connected through bolts.

As shown in fig. 3 and 4, an inner wall of one end of the branch cylinder 2 is provided with an internal thread 201; a first annular clamping groove 202 matched with the first sealing ring 4 is formed in one end face, close to the internal thread 201, of the branch cylinder 2; the branch cylinder 2 is provided with a first limit ring 203 and a second limit ring 204 on the peripheral side surface near one end of the internal thread 201.

As shown in fig. 3 and 5, a threaded joint 301 matched with the internal thread 201 is arranged on one end surface of the connecting end 3; a second annular clamping groove 302 matched with the first sealing ring 4 is formed in one end face of the connecting end 3 and located on the outer side of the threaded joint 301; the peripheral side surface of one end of the connecting end 3 close to the threaded joint 301 is respectively provided with a third limiting ring 303 and a fourth limiting ring 304.

As shown in fig. 4, 5 and 6, a first protruding strip 601 is disposed on the inner wall of one end of the hoop 6 and between the first limiting ring 203 and the second limiting ring 204; a second raised strip 602 is arranged on the inner wall of the other end of the hoop 6 and between the second limiting ring 204 and the fourth limiting ring 304; a third protruding strip 603 is disposed on the inner wall of the hoop 6 and between the first protruding strip 601 and the second protruding strip 602.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Double-sealing type GIS casing, including GIS casing (1), GIS casing (1) week side is equipped with branch section of thick bamboo (2), its characterized in that:

one end of the branch cylinder (2) is connected with a connecting end (3) in a threaded manner; a first sealing ring (4) is clamped between the opposite end faces of the branch cylinder (2) and the connecting end (3); a second sealing ring (5) is sleeved between the branch cylinder (2) and the circumferential side surfaces of the two ends of the connecting end head (3); hoops (6) are sleeved between the branch cylinders (2) and the circumferential side surfaces of the two ends of the connecting end (3) and positioned on the outer sides of the second sealing rings (5); and the two ends of the hoop (6) are fixedly connected through bolts.

2. The double-sealed GIS housing according to claim 1, wherein the inner wall of one end of the branch cylinder (2) is provided with an internal thread (201); one end face, close to the internal thread (201), of the branch cylinder (2) is provided with a first annular clamping groove (202) matched with the first sealing ring (4); the side surface of the branch cylinder (2) close to the periphery of one end of the internal thread (201) is provided with a first limit ring (203) and a second limit ring (204) respectively.

3. Double sealed GIS housing according to claim 2, wherein one end of the connection head (3) is provided with a threaded joint (301) cooperating with the internal thread (201); a second annular clamping groove (302) matched with the first sealing ring (4) is formed in one end face of the connecting end head (3) and located on the outer side of the threaded joint (301); and the peripheral side surface of one end, close to the threaded joint (301), of the connecting end head (3) is provided with a third limiting ring (303) and a fourth limiting ring (304) respectively.

4. The double-sealed GIS housing according to claim 3, wherein a first rib (601) is arranged on an inner wall of one end of the hoop (6) and between the first limiting ring (203) and the second limiting ring (204); a second raised strip (602) is arranged on the inner wall of the other end of the hoop (6) and positioned between the second limiting ring (204) and the fourth limiting ring (304); and a third convex strip (603) is arranged on the inner wall of the hoop (6) and between the first convex strip (601) and the second convex strip (602).