CN212209268U

CN212209268U - Sealing structure for box type inflating switch

Info

Publication number: CN212209268U
Application number: CN202020839411.0U
Authority: CN
Inventors: 王康; 万加飞; 张福康; 俞洋; 冯书菊; 王爱娜
Original assignee: JIANGSU DAQO HIGH VOLTAGE SWITCHGEAR CO Ltd
Current assignee: JIANGSU DAQO HIGH VOLTAGE SWITCHGEAR CO Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-12-22
Anticipated expiration: 2030-05-19

Abstract

The utility model belongs to the technical field of it is sealed, concretely relates to a seal structure for box gas-filled switch, the switch includes apron, box, it is equipped with the sealing strip to press from both sides between apron and the box, on the contact surface of sealing strip and apron, outside protrusion has one at least bead on perhaps the contact surface of sealing strip and box, bead extending direction is the same with the extending direction of sealing strip, just the bead is by apron or box extrusion back, bead top and plane parallel and level on every side. Seal structure, through multiple sealed and location design, effectively improved the sealing performance of box switch, improved product property ability, increased the security and the reliability of product.

Description

Sealing structure for box type inflating switch

Technical Field

The utility model belongs to the technical field of it is sealed, concretely relates to a seal structure for box gas-filled switch.

Background

In the field of box type inflation switches, because the box type switch needs to be inflated, the contact position of a box body and a sleeve, the contact position of the box body and a cover plate, and the contact position of a mechanism cover and a case all need to be sealed by adopting sealing strips. The air leakage rate of the box type switch is determined by the quality of the sealing performance of the switch, the performance of the switch is directly influenced, if the sealing performance of the switch is poor, the partial discharge of the switch is increased, the service life of a product is influenced, and the product is dangerous to use.

Prior art is shown in fig. 1, and apron and box are planar structure, accompany the sealing strip between apron and the box, and the sealing strip is flat ground from top to bottom and is laminated with apron and box. The sealing design is simple, and the sealing performance is influenced in the assembling process because the contact surface of the sealing glue and air is large and the sealing glue is easy to dry and solidify. The cover plate and the sealing strip are in simple surface-to-surface contact and are not easy to position. And at bolt-up's in-process, force the apron installation to target in place, under the existence of frictional force, if there is solid particle impurity to exist, easily make the sealing strip damaged deformation, make sealed effect variation, influence the life-span of sealing strip.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a new a seal structure for box gas-filled switch, it can effective location and improve sealed effect.

The utility model discloses a concrete technical scheme as follows:

the utility model provides a seal structure for box gas-filled switch, the switch includes apron, box, press from both sides between apron and the box and be equipped with the sealing strip, on the contact surface of sealing strip and apron, perhaps outside protrusion has one at least bead on the contact surface of sealing strip and box, bead extending direction is the same with the extending direction of sealing strip, just the bead is by apron or box extrusion back, bead top and plane parallel and level on every side.

Wherein, its cross section of bead is circular-arc arch.

And the cover plate or the box body is provided with a limiting structure corresponding to the positioning structure.

The positioning structure is a positioning groove or a positioning protrusion, and the limiting structure is a limiting protrusion corresponding to the positioning groove or a limiting groove corresponding to the positioning protrusion.

Wherein, a limiting groove is arranged on the box body.

Wherein, its cross section of spacing recess is square or arc.

Wherein, the limiting structure is also provided with an auxiliary sealing bulge protruding outwards.

The auxiliary sealing bulge is a strip-shaped bulge with the same extending direction as the sealing strip.

Advantageous effects

Seal structure, through multiple sealed and location design, effectively improved the sealing performance of box switch, improved product property ability, increased the security and the reliability of product.

Drawings

FIG. 1 is a schematic view of a sealing structure in the prior art

FIG. 2 is a schematic view of a seal structure of the present application

Wherein, 1 is the apron, 2 is the box, 3 is the sealing strip, 11 is spacing protruding, 12 is supplementary sealed arch, 21 is spacing recess, 32 is the bead.

Detailed Description

The schematic diagram of the box switch of the utility model discloses a shown in fig. 2, including apron 1 and box 2, press from both sides between apron 1 and the box 2 and be equipped with sealing strip 3. On the contact surface of sealing strip 3 and apron 1, perhaps outside protrusion has one at least bead 32 on the contact surface of sealing strip 3 and box 2, bead 32 extending direction is the same with the extending direction of sealing strip 3, just bead 32 is by

apron

1 or 2 extrusion backs of box, bead 32 top and plane parallel and level on every side.

By providing such ribs 32, a line seal is first formed between the ribs 32 of the seal structure described herein and the lid 1 or the housing 2. Compare unstable face sealed originally, the line is sealed simple and practical and efficiency is higher. When the rib 32 is pressed, the height is compressed to 0, and the rib and the surrounding plane form a surface seal again, so that the organic unification of line sealing and surface sealing is realized. When impurities exist on the surrounding plane to affect the surface sealing effect, the convex ribs 32 are not tightly compressed, so the convex ribs 32 naturally form line sealing again, and the sealing structure is ensured to still have enough sealing performance. Compared with single line sealing or single surface sealing, the sealing structure has better sealing performance.

Preferably, the cross section of the convex rib 32 is a circular arc-shaped bulge, and the fluctuation of the circular arc-shaped bulge is softer relative to the surrounding plane. When such a rib 32 is pressed by the cover 1 or the case 2, it can be more completely contacted with the cover 1 or the case 2, no air gap is formed, and the sealing effect can be improved.

Specifically, the sealing strip 3 of the present application may further be provided with a positioning structure. And the cover plate 1 or the box body 2 is provided with a limiting structure corresponding to the positioning structure, and the positioning structure is matched with the limiting structure to fix the position of the sealing strip 3. So set up, can place seal structure position steadily between apron 1 and box 2, avoid taking place the displacement because seal structure and influence the sealing performance of box switch.

Specifically, the positioning structure may be a positioning groove or a positioning protrusion, and the position-limiting structure may be a position-limiting protrusion 11 corresponding to the positioning groove or a position-limiting groove 21 corresponding to the positioning protrusion.

Specifically, in this embodiment, the case 2 is provided with a limiting groove 21, and the cross section of the limiting groove 21 may be square or arc. By providing such a limit groove 21 on the case 2, the sealant can be stored therein in advance with ease. The face of 2 contacts with the box on the sealing strip 3 is provided with the location protrudingly, and when the location protrudingly on the sealing strip 3 of this application was placed in spacing recess 21, sealed glue can be very complete fill the space between protruding and the spacing recess 21 of location to can extrude unnecessary sealed glue smoothly, realize good sealed effect.

Specifically, in this embodiment, a positioning groove is provided on a surface of the sealing strip 3 contacting the cover plate 1, the cover plate 1 is convexly provided with a limiting protrusion 11, and the limiting protrusion 11 and the positioning groove are matched to fix the position of the sealing strip 3.

Wherein, preferably, the limiting structure can be further provided with an auxiliary sealing bulge 12 protruding outwards. For example, in this embodiment, the limiting protrusion 11 of the cover plate 1 protrudes outward to form an auxiliary sealing protrusion 12, the auxiliary sealing protrusion 12 is a strip-shaped protrusion having the same extending direction as the sealing strip 3, and the auxiliary sealing protrusion 12 presses the surface of the positioning groove on the sealing strip 3, so that the sealing effect is achieved while the positioning is performed.

To sum up, seal structure, through multiple sealed and location design, effectively improved the sealing performance of box switch, improved product property ability, increased the security and the reliability of product.

Claims

1. The utility model provides a seal structure for box gas-filled switch, the switch includes apron (1), box (2), press from both sides between apron (1) and box (2) and be equipped with sealing strip (3), its characterized in that, on the contact surface of sealing strip (3) and apron (1), perhaps outside protrusion has one at least bead (32) on the contact surface of sealing strip (3) and box (2), bead (32) extending direction is the same with the extending direction of sealing strip (3), just bead (32) are by apron (1) or box (2) extrusion back, bead (32) top and plane parallel and level on every side.

2. The seal structure of claim 1, wherein the rib (32) has a convex cross-section in the shape of a circular arc.

3. The sealing structure according to claim 1, characterized in that the sealing strip (3) is further provided with a positioning structure, and the cover plate (1) or the box body (2) is provided with a limiting structure corresponding to the positioning structure.

4. The sealing structure according to claim 3, characterized in that the positioning structure is a positioning groove or a positioning protrusion, and the stopper structure is a stopper protrusion (11) corresponding to the positioning groove or a stopper groove (21) corresponding to the positioning protrusion.

5. The sealing structure according to claim 4, characterized in that a limiting groove (21) is provided on the case (2).

6. A sealing arrangement according to claim 4 or 5, characterised in that the limiting recess (21) is square or arc-shaped in cross-section.

7. A sealing arrangement according to claim 3, characterised in that the limiting structure is further provided with an outwardly projecting auxiliary sealing projection (12).

8. The sealing structure according to claim 7, characterized in that the auxiliary sealing protrusion (12) is a strip-like protrusion extending in the same direction as the sealing strip (3).