Bimetal self-sealing tooth-shaped gasket
By designing a bimetallic self-sealing toothed gasket, and utilizing the staggered arrangement of protrusions and grooves and pre-tightening compression, the problem of insufficient sealing performance of existing gaskets is solved, achieving self-sealing compensation and sealing performance improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2026-03-31
AI Technical Summary
Existing metal toothed gaskets have insufficient sealing performance under high sealing requirements and cannot meet the sealing needs of some industries.
A bimetallic self-sealing toothed gasket is designed by setting protrusions and grooves on a first gasket and a second gasket respectively, with the protrusions and grooves arranged alternately, and applying a pre-tightening force through fasteners to compress the protrusions into the grooves to form a self-sealing structure.
It achieves self-sealing compensation under medium pressure, improves sealing performance, and ensures that the gasket maintains good sealing performance under operating conditions.
Smart Images

Figure CN224064821U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gaskets, and in particular to a bimetallic self-sealing toothed gasket. Background Technology
[0002] In the sealing process of equipment in industries such as petroleum, chemical, metallurgy, power, shipbuilding, and machinery, gaskets are required for sealing. When faced with certain high sealing requirements or under the same preload, the sealing performance of ordinary metal toothed gaskets cannot meet the requirements. Utility Model Content
[0003] Therefore, it is necessary to provide a bimetallic self-sealing toothed gasket.
[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A bimetallic self-sealing toothed gasket includes: a first gasket and a second gasket; the first surface of the first gasket is provided with a plurality of first protrusions, each of the first protrusions being spaced apart, and each of the first protrusions being provided with a first groove; the second surface of the first gasket is a plane; the first surface of the second gasket is provided with a plurality of second protrusions, each of the second protrusions being spaced apart, and each of the second protrusions being provided with a second groove; the second surface of the second gasket is a plane; the second surfaces of the first gasket and the second surface of the second gasket are connected.
[0005] In one embodiment, the distance between two adjacent first protrusions is 2.5 mm.
[0006] In one embodiment, the distance between two adjacent second protrusions is 2.5 mm.
[0007] In one embodiment, the opening angle of the first groove is 100°.
[0008] In one embodiment, the opening angle of the second groove is 100°.
[0009] In one embodiment, the first bump and the second bump are arranged alternately.
[0010] In one embodiment, the bottom of the first groove is arc-shaped.
[0011] In one embodiment, the bottom of the second groove is arc-shaped.
[0012] In one embodiment, the combined thickness of the first and second gaskets ranges from 4.5 to 5 millimeters.
[0013] The beneficial effects of this utility model are as follows: This utility model provides a bimetallic self-sealing toothed gasket, in which several first protrusions are raised on a first gasket, each with a first groove; similarly, several second protrusions are raised on a second gasket, each with a second groove; simultaneously, the first and second gaskets are connected together, with the first and second protrusions facing back to back to form a bimetallic self-sealing toothed gasket. With this configuration, when the bimetallic self-sealing toothed gasket is placed between the sealing surfaces of two connectors, an initial seal is generated by the pre-tightening force applied by the fasteners. The pre-tightening force compresses the first and second protrusions, that is, the first protrusions are compressed into the first groove, and the second protrusions are compressed into the second groove, thereby generating sufficient clamping force between the sealing surfaces to prevent leakage of the medium through the bimetallic self-sealing toothed gasket itself, thus giving it self-sealing properties. This means that the bimetallic self-sealing toothed gasket can compensate for and improve the stress of the first and second gaskets under operating conditions by the pressure of the medium, so that the bimetallic self-sealing toothed gasket can always maintain its sealing performance. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of a bimetallic self-sealing toothed gasket according to one embodiment.
[0016] In the attached diagram, 10 is a bimetallic self-sealing toothed gasket; 100 is a first gasket; 110 is a first protrusion; 120 is a first groove; 200 is a second gasket; 210 is a second protrusion; and 220 is a second groove. Detailed Implementation
[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.
[0018] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.
[0019] In one embodiment, such as Figure 1 As shown, a bimetallic self-sealing toothed gasket 10 includes: a first gasket 100 and a second gasket 200; the first gasket 100 has a plurality of first protrusions 110 protruding from its first surface, with each first protrusion 110 spaced apart, and each first protrusion 110 having a first groove 120 formed thereon; the second surface of the first gasket 100 is flat; the second gasket 200 has a plurality of second protrusions 210 protruding from its first surface, with each second protrusion 210 spaced apart, and each second protrusion 210 having a second groove 220 formed thereon; the second surface of the second gasket 200 is flat; the second surfaces of the first gasket 100 and the second surface of the second gasket 200 are connected.
[0020] Specifically, a plurality of first protrusions 110 are provided on the first gasket 100, and each first protrusion 110 has a first groove 120 formed thereon; similarly, a plurality of second protrusions 210 are provided on the second gasket 200, and each second protrusion 210 has a second groove 220 formed thereon; at the same time, the first gasket 100 and the second gasket 200 are connected together, such that the first protrusions 110 and the second protrusions 210 are arranged back to back to form the bimetallic self-sealing toothed gasket 10. With the above configuration, when the bimetallic self-sealing toothed gasket is placed between the sealing surfaces of the two connectors, an initial seal is generated by the pre-tightening force applied by the fasteners. The preload compresses the first protrusion 110 and the second protrusion 210, specifically, the first protrusion 110 is compressed into the first groove 120, and the second protrusion 210 is compressed into the second groove 220. This generates sufficient clamping force between the sealing surfaces, preventing leakage of the medium through the bimetallic self-sealing toothed gasket 10 itself, thus giving it self-sealing properties. This means that the bimetallic self-sealing toothed gasket can compensate for and enhance the stress of the first gasket 100 and the second gasket 200 under operating conditions using the pressure of the medium, thereby ensuring that the bimetallic self-sealing toothed gasket maintains its sealing performance at all times.
[0021] To ensure that there is an appropriate distance between adjacent first protrusions 110 for compression, in one embodiment, the distance between adjacent first protrusions 110 is 2.5 mm. Specifically, by setting the distance between adjacent first protrusions 110 to 2.5 mm, it is ensured that there is space for compression between adjacent first protrusions 110, thereby improving the sealing performance of the bimetallic self-sealing toothed gasket 10.
[0022] To ensure that there is an appropriate distance between adjacent second protrusions 210 for compression, in one embodiment, the distance between adjacent second protrusions 210 is 2.5 mm. Specifically, by setting the distance between adjacent second protrusions 210 to 2.5 mm, it is ensured that adjacent second protrusions 210 have space to be compressed, thereby improving the sealing performance of the bimetallic self-sealing toothed gasket 10.
[0023] In order to better accommodate the compressed first protrusion 110, in one embodiment, the opening angle of the first groove 120 is 100°. Specifically, by opening the first groove 120 to 100°, the first groove 120 has a larger accommodating space, so that when the first protrusion 110 is compressed, it can be better squeezed into the first groove 120.
[0024] In order to better accommodate the compressed second protrusion 210, in one embodiment, the opening angle of the second groove 220 is 100°. Specifically, by opening the second groove 220 to 100°, the second groove 220 has a larger accommodating space, so that when the second protrusion 210 is compressed, it can be better squeezed into the second groove 220.
[0025] To ensure that the bimetallic self-sealing toothed gasket 10 remains flat when compressed, in one embodiment, the first protrusion 110 and the second protrusion 210 are staggered. Specifically, by staggering the first protrusion 110 and the second protrusion 210, when the bimetallic self-sealing toothed gasket 10 is compressed, each first protrusion 110 is compressed onto the first gasket 100, that is, the back side between two adjacent second protrusions 210; similarly, each second protrusion 210 is compressed onto the second gasket 200, that is, the back side between two adjacent first protrusions 110. This arrangement ensures that the bimetallic self-sealing toothed gasket 10 remains flat when compressed, resulting in a better sealing effect.
[0026] To make the compressed first protrusion 110 smoother, in one embodiment, the bottom of the first groove 120 is arc-shaped. Specifically, by setting the bottom of the first groove 120 to be arc-shaped, the first protrusion 110 can be made smoother in the compressed state after being compressed.
[0027] To make the compressed second protrusion 210 smoother, in one embodiment, the bottom of the second groove 220 is arc-shaped. Specifically, by setting the bottom of the second groove 220 to be arc-shaped, the compressed second protrusion 210 becomes smoother.
[0028] To allow the bimetallic self-sealing toothed gasket to accommodate a wider range of connectors, in one embodiment, the combined thickness of the first gasket 100 and the second gasket 200 ranges from 4.5 to 5 millimeters. Specifically, the combined thickness of the first gasket 100 and the second gasket 200 is the thickness of the bimetallic self-sealing toothed gasket. By controlling the thickness range of the bimetallic self-sealing toothed gasket to 4.5-5 millimeters, the overall thickness of the bimetallic self-sealing toothed gasket can be made thinner, thereby enabling it to accommodate a wider variety of connectors.
[0029] Compared with the prior art, the present invention has at least the following advantages: the bimetallic self-sealing toothed gasket can compensate for and improve the stress of the first gasket and the second gasket under the operating state by the pressure of the medium, so that the bimetallic self-sealing toothed gasket can always maintain its sealing performance.
[0030] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A bimetallic self-sealing gasket of the split type, characterized in that, The utility model relates to a kind of first gasket and second gasket; First face of the first gasket is provided with a plurality of first lugs, each first lug is spaced apart, a first recess is formed on each first lug, and the second face of the first gasket is a plane; Second face of the second gasket is provided with a plurality of second lugs, each second lug is spaced apart, a second recess is formed on each second lug, and the second face of the second gasket is a plane; The second face of the first gasket is connected to the second face of the second gasket. The distance between adjacent first lugs is 2.5 mm.
2. The bimetallic self-sealing garter spring of claim 1, wherein, The distance between adjacent second lugs is 2.5 mm.
3. The bimetallic self-sealing garter spring of claim 1, wherein, The opening angle of the first recess is 100°.
4. The bimetallic self-sealing splined gasket of claim 1 wherein, The opening angle of the second recess is 100°.
5. The bimetallic self-sealing garter spring of claim 1, wherein, The first lugs and the second lugs are staggered.
6. The bimetallic self-sealing garter spring of claim 1, wherein, The bottom of the first recess is a circular arc.
7. The bimetallic self-sealing garter spring of claim 1, wherein, The bottom of the second recess is a circular arc.
8. The bimetallic self-sealing garter spring of claim 1, wherein, The overall thickness of the first gasket and the second gasket combined is in the range of 4.5-5 mm.
9. The bimetallic self-sealing splined gasket of claim 1 wherein,