CN216895734U

CN216895734U - Sealing isolation structure used between two concentric cavities

Info

Publication number: CN216895734U
Application number: CN202220261919.6U
Authority: CN
Inventors: 李松; 顾中强; 刘顺; 孟亮; 刘伟; 吴宾宾; 徐良鹏; 马立超
Original assignee: Taizhou Jinneng New Energy Co ltd
Current assignee: Taizhou Jinneng New Energy Co ltd
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2022-07-05
Anticipated expiration: 2032-02-09

Abstract

The utility model discloses a sealing isolation structure used between two concentric cavities, which comprises a first sealing ring, a second sealing ring and a third sealing ring which are arranged between the two concentric cavities, wherein the two concentric cavities are an inner cavity and an outer cavity which are coaxially overlapped; a supporting boss for supporting the third sealing ring is arranged on the inner wall of the outer cavity; an extrusion structure for compressing the first sealing ring is fixed at the opening part of the inner cavity. The utility model adopts a plurality of sealing rings, and the sealing rings are compressed by the pressure rings and the jackscrews, so that the detachable sealing isolation between the inner cavity and the outer cavity is realized; through setting up the aspirating hole at outer cavity, take out the air between sealing washer and interior cavity and sealing washer and the outer cavity, strengthen sealed isolated between two cavitys.

Description

Sealing isolation structure used between two concentric cavities

Technical Field

The present invention relates to a sealing and isolating structure, and more particularly, to a sealing and isolating structure for two concentric cavities.

Background

For a device with two independent concentric nested cavities, the two cavities are usually welded when needing sealing isolation, but the two cavities are integrated by the welding mode, namely the two cavities cannot be disassembled or replaced, so that the application range of the device is limited; meanwhile, when the two cavities are made of different materials, the two cavities cannot be sealed and isolated through welding. It is therefore necessary to design a hermetic isolation structure for two concentric chambers.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a sealing and isolating structure used between two concentric cavities, and solves the problems that the application range of the existing sealing and isolating method is limited, and the two cavities cannot be disassembled and replaced.

The utility model provides a sealing isolation structure used between two concentric cavities to solve the technical problems, which comprises a first sealing ring, a second sealing ring and a third sealing ring which are arranged between the two concentric cavities, wherein the two concentric cavities are an inner cavity and an outer cavity which have the same outline shape and different sizes, the inner cavity and the outer cavity are coaxially sleeved, the first sealing ring, the second sealing ring and the third sealing ring are positioned at the mouths of the two concentric cavities and are sequentially abutted to the bottom direction, the first sealing ring and the third sealing ring are tightly attached to the outer wall of the inner cavity, and the second sealing ring is tightly attached to the inner wall of the outer cavity; a support boss is arranged on the inner wall of the outer cavity and supports the third sealing ring; and an extrusion structure for compressing the first sealing ring is fixed at the opening part of the inner cavity.

Further, the cross sections of the first sealing ring, the second sealing ring and the third sealing ring are circular, the cross section diameters of the first sealing ring, the second sealing ring and the third sealing ring are all smaller than the distance between the inner cavity and the outer cavity, and the sum of the cross section diameters of any two of the first sealing ring, the second sealing ring and the third sealing ring is larger than the distance between the inner cavity and the outer cavity.

Furthermore, the area enclosed by the second sealing ring, the third sealing ring, the supporting boss and the inner wall of the outer cavity is a first area; the area enclosed by the first sealing ring, the second sealing ring, the third sealing ring and the outer wall of the inner cavity is a second area; a plurality of gaskets are arranged on the contact surface of the second sealing ring and the third sealing ring at intervals, so that a gap is formed between the second sealing ring and the third sealing ring, and the gap is a channel for communicating the first area and the second area; the outer wall of the outer cavity is provided with an outer cavity air exhaust hole communicated with the first area, and air in the first area and air in the second area can be extracted through the outer cavity air exhaust hole.

Further, the extrusion structure comprises a compression ring, a jackscrew and a jackscrew support, the jackscrew is arranged on the jackscrew support, the jackscrew support is fixed at the opening of the inner wall of the outer cavity, and the compression ring is extruded by the jackscrew through adjustment so as to compress the first sealing ring.

Further, the cross-section of clamping ring is the wedge, the wedge inclined plane and the first sealing washer butt of clamping ring.

Further, the jackscrew support is L-shaped.

Furthermore, the contact surface of the support boss and the third seal ring is an arc-shaped surface; an isolation interval is reserved between the support boss and the outer wall of the inner cavity, and the isolation interval is smaller than the section radius of the third sealing ring.

Compared with the prior art, the utility model has the following beneficial effects: the sealing isolation structure for the two concentric cavities provided by the utility model adopts a plurality of sealing rings, the sealing rings are compressed by the pressing rings and the jackscrews, the detachable sealing isolation between the inner cavity and the outer cavity is realized, the inner space of the inner cavity and the inner space of the outer cavity are not interfered with each other, air between the sealing rings and the inner cavity and between the sealing rings and the outer cavity is pumped out through the air exhaust holes arranged in the outer cavity, and the two cavities are effectively and stably sealed and isolated for a long time.

Drawings

FIG. 1 is a schematic view of two concentric chambers of an embodiment of the present invention;

FIG. 2 is a schematic view of a sealing and isolating structure for two concentric chambers according to an embodiment of the present invention;

FIG. 3 is a schematic view of a sealing and isolating structure for two concentric chambers according to an embodiment of the present invention.

In the figure:

100. an outer cavity; 101. an inner cavity; 102. a first seal ring; 103. a second seal ring; 104. a third seal ring; 105. a gasket; 106. an outer cavity air exhaust hole; 107. pressing a ring; 108. a jackscrew bracket; 109 jackscrews; 110. supporting the boss; 111. a first region; 112. a second region.

Detailed Description

The utility model is further described below with reference to the figures and examples.

FIG. 1 is a schematic view of two concentric chambers of an embodiment of the present invention; fig. 2 is a schematic view of a sealing and isolating structure for two concentric cavities according to an embodiment of the present invention.

Referring to fig. 1 and fig. 2, the sealing and isolating structure for two concentric cavities according to the embodiment of the present invention includes a first sealing ring 102, a second sealing ring 103, and a third sealing ring 104 disposed between the two concentric cavities, where the two concentric cavities are an inner cavity 101 and an outer cavity 100 having the same shape and different size, the inner cavity 101 and the outer cavity 100 are coaxially nested, the first sealing ring 102, the second sealing ring 103, and the third sealing ring 104 are located at the mouths of the two concentric cavities and sequentially abut against each other in the bottom direction, the first sealing ring 102 and the third sealing ring 104 are disposed close to the outer wall of the inner cavity 101, and the second sealing ring 103 is disposed close to the inner wall of the outer cavity 100; a support boss 110 is arranged on the inner wall of the outer cavity 100, and the support boss 110 supports the third sealing ring 104; a squeezing structure for pressing the first sealing ring 102 is fixed to the mouth of the inner cavity 101.

Specifically, the cross sections of the first sealing ring 102, the second sealing ring 103 and the third sealing ring 104 are all circular, the cross section diameters of the first sealing ring 102, the second sealing ring 103 and the third sealing ring 104 are all smaller than the distance between the inner cavity 101 and the outer cavity 100, and the sum of the cross section diameters of any two of the first sealing ring 102, the second sealing ring 103 and the third sealing ring 104 is larger than the distance between the inner cavity 101 and the outer cavity 100. So that the third sealing ring 104 is attached to the outer wall of the inner cavity 101 and a sufficient gap is left between the third sealing ring and the inner wall of the outer cavity 100; the second sealing ring 103 is attached to the inner wall of the outer cavity 100 and has enough clearance with the outer wall of the inner cavity 101; the first sealing ring 102 is attached to the outer wall of the inner cavity 101 and has a sufficient gap with the inner wall of the outer cavity 100.

Specifically, the extrusion structure comprises a pressing ring 107, a jackscrew 109 and a jackscrew support 108, the jackscrew 109 is arranged on the jackscrew support 108, the jackscrew support 108 is fixed at the opening of the inner wall of the outer cavity 100, the pressing ring 107 is extruded by adjusting the jackscrew 109, and then the first sealing ring 102 is compressed. The jackscrew bracket 108 is L-shaped. Preferably, the cross section of the pressing ring 107 is wedge-shaped, the wedge-shaped inclined surface of the pressing ring 107 abuts against the first sealing ring 102, and the pressing ring 107 presses the first sealing ring 102 downward and presses the first sealing ring 102 toward the inner cavity 101.

Referring to fig. 3, in the sealing isolation structure for two concentric cavities according to the embodiment of the present invention, a region enclosed by the second sealing ring 103, the third sealing ring 104, the supporting boss 110, and the inner wall of the outer cavity 100 is a first region 111; the area enclosed by the first sealing ring 102, the second sealing ring 103, the third sealing ring 104 and the outer wall of the inner cavity 101 is a second area 112; a plurality of gaskets 105 are arranged on the contact surface of the second sealing ring 103 and the third sealing ring 104 at intervals, so that a gap is formed between the second sealing ring 103 and the third sealing ring 104, and the gap is a channel for communicating the first area 111 with the second area 112; the outer wall of the outer chamber 100 is provided with an outer chamber pumping hole 106 communicating with the first region 111, and air in the first region 111 and the second region 112 can be pumped through the outer chamber pumping hole 106. Further enhancing the sealing between the inner chamber body 101 and the outer chamber body 100.

Specifically, the contact surface of the support boss 110 and the third seal ring 104 is an arc-shaped surface, so as to support the third seal ring 104 with a circular cross section; an isolation distance is reserved between the supporting boss 110 and the outer wall of the inner cavity 101, so that the inner cavity 101 can be conveniently placed into the outer cavity 100, the isolation distance is smaller than the section radius of the third seal 101, and the third seal ring 104 can conveniently seal the isolation distance.

In summary, in the sealing isolation structure for two concentric cavities according to the embodiment of the present invention, a plurality of sealing rings are used, and the sealing rings are compressed by the pressing ring 107 and the jackscrew 109, so that the inner cavity 101 and the outer cavity 100 are detachably sealed and isolated, and the inner space of the inner cavity 101 and the inner space of the outer cavity 100 do not interfere with each other; through setting up the aspirating hole at outer cavity 100, take out the air between sealing washer and interior cavity 101 and sealing washer and outer cavity 100, effectively just stably seal up completely cut off two cavitys for a long time.

Although the present invention has been described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A sealing isolation structure used between two concentric cavities is characterized by comprising a first sealing ring, a second sealing ring and a third sealing ring which are arranged between the two concentric cavities, wherein the two concentric cavities are an inner cavity and an outer cavity which have the same shape and outline but different sizes, the inner cavity and the outer cavity are coaxially arranged in a telescopic way, the first sealing ring, the second sealing ring and the third sealing ring are positioned at the mouths of the two concentric cavities and are sequentially abutted to the bottom direction, the first sealing ring and the third sealing ring are arranged to be clung to the outer wall of the inner cavity, and the second sealing ring is arranged to be clung to the inner wall of the outer cavity; a support boss is arranged on the inner wall of the outer cavity and supports the third sealing ring; and an extrusion structure for compressing the first sealing ring is fixed at the opening part of the inner cavity.

2. A sealing and insulating structure for two concentric cavities according to claim 1, wherein the first, second and third sealing rings are circular in cross-section, the first, second and third sealing rings have cross-sectional diameters that are smaller than the distance between the inner cavity and the outer cavity, and the sum of the cross-sectional diameters of any two of the first, second and third sealing rings is greater than the distance between the inner cavity and the outer cavity.

3. The seal and isolation structure for two concentric cavities according to claim 1, wherein the area enclosed by the second seal ring, the third seal ring, the support boss and the inner wall of the outer cavity is a first area; the area enclosed by the first sealing ring, the second sealing ring, the third sealing ring and the outer wall of the inner cavity is a second area; a plurality of gaskets are arranged on the contact surface of the second sealing ring and the third sealing ring at intervals, so that a gap is formed between the second sealing ring and the third sealing ring, and the gap is a channel for communicating the first area and the second area; the outer wall of the outer cavity is provided with an outer cavity air exhaust hole communicated with the first area, and air in the first area and air in the second area can be extracted through the outer cavity air exhaust hole.

4. The sealing and isolating structure for the two concentric cavities according to claim 1, wherein the extrusion structure comprises a pressing ring, a jackscrew and a jackscrew bracket, the jackscrew is arranged on the jackscrew bracket, the jackscrew bracket is fixed at the opening of the inner wall of the outer cavity, and the pressing ring is extruded by adjusting the jackscrew so as to press the first sealing ring.

5. The seal and insulation structure between two concentric cavities according to claim 4, wherein the cross section of said pressure ring is wedge-shaped, and the wedge-shaped slope of said pressure ring abuts against the first seal ring.

6. A hermetic seal and isolation structure between two concentric chambers as claimed in claim 4, wherein the jackscrew holder is L-shaped.

7. The structure of claim 1, wherein the contact surface of the supporting boss and the third sealing ring is an arc surface; an isolation interval is reserved between the support boss and the outer wall of the inner cavity, and the isolation interval is smaller than the section radius of the third sealing ring.