CN215861714U

CN215861714U - Gasket

Info

Publication number: CN215861714U
Application number: CN202121771498.3U
Authority: CN
Inventors: 励建苗; 孙旭央; 卢佳丹
Original assignee: Cixi Burgmann Sealing Materials Co ltd
Current assignee: Cixi Burgmann Sealing Materials Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-02-18
Anticipated expiration: 2031-07-30

Abstract

The utility model relates to a gasket, which comprises an annular substrate and is characterized in that: the base body comprises a thick-walled part positioned at the near end and a thin-walled part positioned at the far end, and the thickness of the base body is gradually increased from the thin-walled part at the far end to the thick-walled part at the near end, compared with the prior art, the utility model has the advantages that: the base body comprises the thick-walled part located at the near end and the thin-walled part located at the far end, and the thickness of the base body is gradually increased from the thin-walled part at the far end to the thick-walled part at the near end, so that the base body with different thicknesses is formed, welding deformation can be well compensated, and by using the base body with different thicknesses, a plurality of gaskets with different thicknesses can be combined through the combination of two or more pieces at different angles, so that the adaptability is high, and the use is convenient.

Description

Gasket

Technical Field

The utility model relates to a sealing element used on equipment such as pipelines or pressure vessels, in particular to a gasket with different thicknesses.

Background

In industrial equipment such as pipelines, valves, pumps, pressure vessels, heat exchangers, condensers and the like, sealing elements are often used, and gaskets are the most widely and commonly applied parts of the sealing elements. The gasket not only can keep the sealing performance of the equipment, but also can solve the abrasion problem of the connecting piece, and the gasket sealing is also the most main static sealing mode of detachable parts such as a pressure container, process equipment, a power machine, a connecting pipeline and the like in a process industrial device. The fluid seal is realized by the close contact between the flange and the gasket, and the leakage channel is reduced or blocked by the elastic-plastic deformation of the gasket so as to increase the flow resistance. Gasket seals typically employ a bolted flange connection, wherein the gasket is a critical element that affects the performance of the bolted flange seal connection. However, in field construction, flanges are easy to be welded and deformed, a gap between two sealing surfaces formed between two flanges has a large size, and with a sealing gasket of the same thickness, plastic deformation may occur at a place with a small gap to damage sealing, or sealing pretightening force is insufficient at a place with a large gap to often cause sealing connection failure.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a gasket which has good sealing performance and high rebound resilience and can better adapt to the working condition of temperature pressure fluctuation in view of the current technical situation.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the gasket comprises a ring-shaped base body, and is characterized in that: the base body comprises a thick-walled part at the proximal end and a thin-walled part at the distal end, and the thickness of the base body is gradually increased from the thin-walled part at the distal end to the thick-walled part at the proximal end.

Further, the bottom of the base body is provided with at least two connecting structures connected with the other base body at intervals along the circumferential direction. The gasket with different thicknesses can be combined by combining two or more substrates at different angles, so that welding deformation can be compensated well.

In order to realize the combination of different angles through two or more substrates, preferably, each of the connection structures includes a convex portion protruding from the bottom of the substrate and a concave portion directly connected to the convex portion, and the concave portion is formed by partially recessing the bottom of the substrate. Because each connecting structure in the base body is equally divided into N equal parts, the thickness difference of two adjacent base bodies is changed into two N times of the thickness difference of a single base body at a relative rotating interval.

In order to combine a plurality of different-thickness gaskets and well compensate welding deformation, the convex part of the base body is preferably matched and connected with the concave part of the other base body in a laminated mode. The convex portion of one base body is overlapped with the concave portion of the other base body, so that the connection between the two base bodies can be realized relatively easily.

Compared with the prior art, the utility model has the advantages that: the base body comprises the thick-walled part located at the near end and the thin-walled part located at the far end, and the thickness of the base body is gradually increased from the thin-walled part at the far end to the thick-walled part at the near end, so that the base body with different thicknesses is formed, welding deformation can be well compensated, and by using the base body with different thicknesses, a plurality of gaskets with different thicknesses can be combined through the combination of two or more pieces at different angles, so that the adaptability is high, and the use is convenient.

Drawings

FIG. 1 is a schematic view of a first combination of gaskets in example 1 of the present invention;

FIG. 2 is a schematic structural diagram of the first gasket of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic structural view of a second combination of gaskets in embodiment 1 of the present invention;

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is a schematic structural view of a third combination of gaskets in example 1 of the present invention;

fig. 7 is a cross-sectional view of fig. 6.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

Example 1

As shown in FIGS. 1 to 7, the preferred embodiment of the present invention is shown. The gasket of the embodiment comprises an annular base body, the base body comprises a thick-walled part 2 located at the near end and a thin-walled part 3 located at the far end, the thickness of the base body is gradually increased from the thin-walled part 3 located at the far end to the thick-walled part 2 located at the near end, and the thickness of the base body is gradually increased from the thin-walled part 3 located at the far end to the thick-walled part 2 located at the near end, so that the base body with different thicknesses is formed, and welding deformation can be well compensated.

In particular, the base body is provided at its bottom with at least two connection structures 4 at intervals in the circumferential direction, which are connected to another base body. The gasket with different thicknesses can be combined by combining two or more substrates at different angles, so that welding deformation can be compensated well. In order to realize the combination of different angles through two or more substrates, each connecting structure 4 preferably comprises a convex portion 41 protruding from the bottom of the substrate and a concave portion 42 directly connected to the convex portion 41, and the concave portion 42 is formed by partially recessing the bottom of the substrate. Each connecting structure 4 equally divides the substrate into N equal parts, and the thickness difference of two adjacent substrates is changed into two N times of the thickness difference of a single substrate by relative rotation of one interval. The convex part 41 of the base body is matched and laminated with the concave part 42 of the other base body, and the convex part 41 of one base body is matched and laminated with the concave part 42 of the other base body, so that the two base bodies can be connected relatively simply, and a plurality of gaskets with different thicknesses can be combined to better compensate welding deformation.

A single respective connecting structure 4 as in this embodiment divides the substrate equally into thirty-six equal parts and two adjacent substrates are spaced one from the other with a thickness differential that varies to two thirty-six times the thickness differential of the single substrate.

The combination mode can be as follows: taking two substrates as an example, the first combination of the proximal end of the first substrate 1a being joined to the proximal end of the second substrate 1b and the distal end of the first substrate 1a being joined to the distal end of the second substrate 1b (as shown in fig. 1, 2 and 3), or the first combination of the proximal end of the first substrate 1a being joined to the distal end of the second substrate 1b and the distal end of the first substrate 1a being joined to the proximal end of the second substrate 1b (as shown in fig. 4 and 5), or the third combination of the proximal and distal ends of two adjacent substrates being opposed to each other by one or N intervals (as shown in fig. 6 and 7).

Example 2

The structure is basically the same as that of the embodiment 1, and the only difference is that: the bottom of each base body is not provided with each connecting structure 4, and the corresponding number of base bodies are directly selected for clearance compensation according to the clearance of the sealing surface formed between the two flanges.

Claims

1. A gasket comprises an annular base body, and is characterized in that: the base body (1 a; 1b) comprises a thick-walled part (2) at the proximal end and a thin-walled part (3) at the distal end, and the thickness of the base body (1 a; 1b) gradually increases from the thin-walled part (3) at the distal end to the thick-walled part (2) at the proximal end.

2. The gasket of claim 1, wherein: at least two connecting structures (4) connected with the other base body (1 a; 1b) are arranged at the bottom of the base bodies (1 a; 1b) at intervals along the circumferential direction.

3. The gasket of claim 2, wherein: each connecting structure (4) comprises a convex part (41) protruding out of the bottom of the base body (1 a; 1b) and a concave part (42) directly connected with the convex part (41), and the concave part (42) is formed by locally sinking the bottom of the base body (1 a; 1 b).

4. The gasket of claim 3, wherein: the convex part (41) of the base body (1 a; 1b) is matched and connected with the concave part (42) of the other base body (1 a; 1b) in a laminated manner.