CN-224214891-U - Flange gasket

Abstract

The application discloses a flange gasket which comprises a framework layer and an elastic sealing layer, wherein at least one group of connecting holes are formed in the framework layer, and the elastic sealing layer is compounded on the framework layer through the connecting holes, so that the framework layer and the sealing layer form a tight and firm whole. Meanwhile, the elastic deformation capacity and the water and air leakage preventing capacity of the gasket can be improved through the sealing layer in the flange gasket.

Inventors

• Wu gun
• LUO KAIMING
• WEI GUO
• Si Hongde
• ZHANG ZHE
• WANG CHUN
• LIU BO
• QIAN BAOJUN
• LIN YUAN
• LI RUIZHI

Assignees

• 北京市市政工程设计研究总院有限公司

Dates

Publication Date

20260508

Application Date

20250519

Claims (10)

1. 1. Flange gasket, its characterized in that, flange gasket includes: The framework layer (1), at least one group of connecting holes (11) are formed in the framework layer (1); And the elastic sealing layer (2) is compounded on the framework layer (1) through the connecting holes (11).
2. 2. Flange gasket according to claim 1, characterized in that the carcass layer (1) is a metal carcass layer.
3. 3. Flange gasket according to claim 1, characterized in that the upper and lower sides of the skeleton layer (1) are wave-shaped structures (12), and the skeleton layer (1) is inlaid and compounded with the elastic sealing layer (2) through the wave-shaped structures (12).
4. 4. A flange gasket according to claim 3, characterized in that the wave-like structure (12) is ratchet-like in shape.
5. 5. A flange gasket according to claim 3, characterized in that the wave-like structure (12) is trapezoidal in shape.
6. 6. Flange gasket according to claim 1, characterized in that the elastic sealing layer (2) comprises an upper sealing layer (21) and a lower sealing layer (22), the upper sealing layer (21) and the lower sealing layer (22) being composited on the upper and lower sides of the carcass layer (1) through the connection holes (11).
7. 7. Flange gasket according to claim 6, characterized in that the upper sealing layer (21) is a graphite wound layer.
8. 8. Flange gasket according to claim 6, characterized in that the lower sealing layer (22) is a fluororubber layer.
9. 9. Flange gasket according to claim 1, characterized in that the elastic sealing layer (2) further comprises an inner sealing layer and an outer sealing layer, which are composited on both the inner and outer sides of the carcass layer (1).
10. 10. Flange gasket according to claim 1 or 6, characterized in that the connecting holes (11) are arranged in a plurality of groups and are symmetrically and uniformly distributed in the skeleton layer (1) at intervals.

Description

Flange gasket Technical Field The application relates to the technical field of flanges, in particular to a flange gasket. Background In engineering practice, when the pipeline equipment adopts flange connection, the requirements of different equipment manufacturers on the sheet flanges are often different, so that the flange equipment with different standards cannot be directly connected. For example, the dimensions of the grooves are different for the national standard and for the European standard, which results in the two flanges not being sealingly connected when they are butted. In order to solve the current situation, a piece of rigid flange gasket is added on the basis of the original flexible gasket, and pipeline equipment connection is realized through superposition of two pieces of flange gaskets, or a short pipe is added between two flanges, and equipment connection problems with different flange standards and different flange standards are realized through the fact that a manufacturer provides the flange pair. However, the two schemes not only increase the production period, the cost and the construction work amount of equipment, but also increase the connecting points and the welded junctions, so that the leakage risk of the connecting points is increased. Therefore, how to solve the above problems becomes a technical point and difficulty in the art. Disclosure of utility model In view of this, the present application proposes a flange gasket comprising: the framework layer is provided with at least one group of connecting holes; And the elastic sealing layer is compounded on the framework layer through the connecting hole. Preferably, the framework layer is a metal framework layer. Preferably, the upper side and the lower side of the framework layer are of wave-shaped structures, and the framework layer is inlaid and compounded with the elastic sealing layer through the wave-shaped structures. Further preferably, the wave-shaped structure is ratchet-shaped. Further preferably, the wave-like structure is trapezoidal in shape. Preferably, the elastic sealing layer comprises an upper sealing layer and a lower sealing layer, and the upper sealing layer and the lower sealing layer are compounded on the upper side and the lower side of the framework layer through the connecting holes. Further preferably, the upper sealing layer is a graphite wound layer. Further preferably, the lower sealing layer is a fluororubber layer. Preferably, the elastic sealing layer further comprises an inner sealing layer and an outer sealing layer, wherein the inner sealing layer and the outer sealing layer are compounded on the inner side and the outer side of the framework layer. Further preferably, the connecting holes are multiple groups and are symmetrically and uniformly distributed in the framework layer at intervals. The flange gasket provided by the application comprises the framework layer and the sealing layer, wherein the sealing layer is compounded on the framework layer by utilizing the connecting holes formed in the framework layer, so that the framework layer and the sealing layer form a tight and firm whole. Meanwhile, the elastic deformation capacity and the water and air leakage preventing capacity of the gasket can be improved through the sealing layer in the flange gasket. Additional features and advantages of the application will be set forth in the detailed description which follows. Drawings The accompanying drawings, which are included to provide a further understanding of the application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings: FIG. 1 is a schematic cross-sectional view of a flange gasket according to a preferred embodiment of the present application; fig. 2 is a schematic structural diagram of a framework layer according to a preferred embodiment of the present application. The figure numbers are 1-skeleton layer, 11-connecting holes, 12-wave structure, 2-elastic sealing layer, 21-upper sealing layer and 22-lower sealing layer. Detailed Description The technical scheme of the present application will be described in detail below with reference to the accompanying drawings in combination with embodiments. As shown in fig. 1-2, the flange gasket of the present application comprises a carcass layer 1 and an elastic sealing layer 2. Wherein, at least one group of connecting holes 11 are arranged in the framework layer 1, and the elastic sealing layer 2 is compounded on the framework layer 1 through the connecting holes 11. The attachment holes 11 are understood to be attachment points through which the elastic sealing layer 2 passes to lock onto the carcass layer 1, effectively reducing the risk of delamination of the gasket. According to the application, the butt joint defects of different standard flanges are made up through the thickness of the flange gasket, and meanwhile, the elastic sealing layer 2 can als