Multi-line metal sealing end cover assembly

Abstract

The utility model discloses a multi-line type metal sealing end cover assembly which comprises a sealing end cover body and a flange, the sealing end cover body and the flange are connected through a bolt, a multi-line type metal sealing ring is arranged between the sealing end cover body and the flange, the multi-line type metal sealing ring comprises an inner diameter and an outer diameter, and the inner diameter is larger than the outer diameter. First sealing points are arranged on the two sides of the multi-linear metal sealing ring, and second sealing points are arranged on the end face of the outer diameter. The sealing device has the advantages of being high in sealing performance and not prone to leakage.

Description

Technical Field

[0001] The utility model relates to the field of sealing end covers, in particular to a multi-linear metal sealing end cover assembly. Background Art

[0002] The sealing end cover assembly of the oil and gas pipeline port is composed of a sealing end cover and a seal. The traditional end cover is composed of a flat end cover and a flat sealing gasket. The sealing surface and the sealing method are single, and it is easy to leak, so it needs to be improved. Content of the Utility Model

[0003] The purpose of the utility model is to provide a multi-linear metal sealing end cover assembly to solve the problems put forward in the above background art, which has the advantages of strong sealing performance and not easy to leak.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: A multi-linear metal sealing end cover assembly, including a sealing end cover body and a flange. The sealing end cover body and the flange are connected by bolts. A multi-linear metal sealing ring is arranged between the sealing end cover body and the flange. The multi-linear metal sealing ring includes an inner diameter and an outer diameter. Two first sealing points are arranged on both sides of the multi-linear metal sealing ring, and a second sealing point is arranged on the end face of the outer diameter.

[0005] Preferably, both the first sealing point and the second sealing point are set to two.

[0006] Preferably, the first sealing point and the second sealing point are set as arc protrusions.

[0007] Preferably, the sealing end cover body is provided with a plurality of screw holes penetrating through the sealing end cover body.

[0008] Preferably, the cross-section of the multi-linear metal sealing ring includes two circular blocks and a connecting block between the circular blocks.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The inner diameter of the multi-linear metal sealing ring has a taper towards the end cover side. After the taper of the end cover boss part is subjected to the bolt fastening force, the taper surface generates an extrusion force on the inner diameter taper of the multi-linear metal sealing ring. After the inner diameter of the seal is stressed, the force is transmitted to the two second sealing points on the outer diameter. As the end cover and the flange are completely fastened and fitted, the first sealing points at the two end faces of the multi-linear metal sealing ring are also stressed and extruded to generate sealing. The taper surface of the end cover boss is subjected to the fastening force to generate surface sealing with the inner diameter taper surface of the multi-linear metal sealing ring. Finally, multi-point line and surface sealing are generated between the multi-linear metal sealing ring, the end cover and the flange. Description of the Drawings

[0011] Figure 1 It is a schematic cross-sectional view structure diagram of the embodiment;

[0012] Figure 2 is Figure 1 The partial enlarged view of area A in

[0013] Figure 3 is the structural schematic diagram of the sealing end cover body in the embodiment;

[0014] Figure 4 is the sectional view of the sealing end cover body;

[0015] Figure 5 is the structural schematic diagram of the multi-line metal sealing ring in the embodiment;

[0016] Figure 6 is the sectional view of the multi-line metal sealing ring.

[0017] In the figure: 1. Sealing end cover body; 2. Flange; 3. Multi-line metal sealing ring; 4. First sealing point; 5. Second sealing point; 6. Screw hole; 7. Round block; 8. Connecting block; 9. Bolt; 10. Boss. Specific embodiments

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] In the embodiments of the present invention,

[0020] A multi-line metal sealing end cover assembly, as Figures 1-6 shown, includes a sealing end cover body 1 and a flange 2. The sealing end cover body 1 and the flange 2 are connected by bolts. A multi-line metal sealing ring 3 is arranged between the sealing end cover body 1 and the flange 2. The multi-line metal sealing ring 3 includes an inner diameter and an outer diameter. First sealing points 4 are arranged on both sides of the multi-line metal sealing ring 3, and second sealing points 5 are arranged on the end face of the outer diameter. The sealing end cover body 1 and the flange 2 are connected by bolts 9. The sealing end cover body 1 is provided with a boss 10.

[0021] Both the first sealing points 4 and the second sealing points 5 are provided as two.

[0022] The first sealing points 4 and the second sealing points 5 are provided as arc protrusions.

[0023] The sealing end cover body 1 is provided with a plurality of screw holes 6 penetrating through the sealing end cover body 1.

[0024] The cross-section of the multi-line metal sealing ring 3 includes two circular blocks 7 and a connecting block 8 between the circular blocks 7.

[0025] Working principle:

[0026] The inner diameter of the multi-line metal sealing ring 3 has a taper towards the side of the sealing end cover body 1. After the taper of the boss part of the sealing end cover body 1 is subjected to the bolt fastening force, the taper surface generates an extrusion force on the inner diameter taper of the multi-line metal sealing ring 3. After the inner diameter of the sealing part is stressed, the force is transmitted to the second sealing points 5 at the two outer diameters. As the sealing end cover body 1 and the flange 2 are completely fastened and fitted, the first sealing points 4 at the two end faces of the multi-line metal sealing ring 3 are also stressed and extruded to generate sealing. The boss taper surface of the sealing end cover body 1 is subjected to the fastening force and generates surface sealing with the inner diameter taper surface of the multi-line metal sealing ring 3. Finally, multi-point line and surface sealing are generated between the multi-line metal sealing ring 3, the sealing end cover body 1 and the flange 2.

[0027] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A multi-line metal sealed end cover assembly, comprising a sealed end cover body (1) and a flange (2), wherein the sealed end cover body (1) and the flange (2) are connected by bolts, and is characterized in that: A multi-line metal sealing ring (3) is arranged between the sealed end cover body (1) and the flange (2). The multi-line metal sealing ring (3) includes an inner diameter and an outer diameter. First sealing points (4) are arranged on both sides of the multi-line metal sealing ring (3), and a second sealing point (5) is arranged on the end face of the outer diameter.

2. The multi-linear metal sealed end cover assembly according to claim 1, characterized in that: Both the first sealing points (4) and the second sealing points (5) are arranged in two.

3. A multi-line metal sealed end cover assembly according to claim 1, characterized in that: The first sealing points (4) and the second sealing points (5) are arranged as arc protrusions.

4. A multi-line metal sealed end cap assembly according to claim 1, characterized in that: The sealed end cover body (1) is provided with a plurality of screw holes (6) penetrating through the sealed end cover body (1).

5. A multi-line metal sealed end cap assembly according to claim 1, characterized in that: The cross section of the multi-line metal sealing ring (3) includes two round blocks (7) and a connecting block (8) between the round blocks (7).

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