High-temperature aging resistant composite gasket structure

Abstract

The utility model relates to the technical field of gaskets, and discloses a high-temperature-aging-resistant composite gasket structure, which solves the problem of poor high-temperature-aging-resistant performance of the existing gasket, and comprises a gasket body, the sealing device is composed of a compression-resistant metal ring, a first main sealing ring, a plurality of first O-shaped sealing rings, a plurality of second O-shaped sealing rings, a second main sealing ring, a plurality of third O-shaped sealing rings and a plurality of fourth O-shaped sealing rings, and the first main sealing rings and the second main sealing rings are connected to the two ends of the compression-resistant metal ring correspondingly. The first O-shaped sealing ring and the second O-shaped sealing ring are connected to the end, close to the first main sealing ring, of the compression-resistant metal ring, and the third O-shaped sealing ring and the fourth O-shaped sealing ring are connected to the end, close to the second main sealing ring, of the compression-resistant metal ring. Through the composite gasket structure, the high-temperature aging resistance can be improved, and then the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of gaskets, in particular to a composite gasket structure resistant to high temperature and aging. Background Art

[0002] Gaskets are required in the flange connections of mechanical equipment and pipelines. Gaskets can perform a sealing function. For some mechanical equipment working in a high-temperature environment and pipelines conveying high-temperature fluids, the high-temperature resistance of the sealing gasket is crucial. Existing gaskets are usually a single rubber structure. Even if high-temperature resistant rubber is used, the rubber gasket is prone to aging during long-term operation, which in turn affects the sealing of the connection. Therefore, the present application proposes a composite gasket structure that is resistant to high temperature and aging, to improve the existing gaskets. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high temperature aging resistant composite gasket structure, which effectively solves the problem that the existing gaskets have poor high temperature aging resistance.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high temperature aging resistant composite gasket structure, comprising a gasket body, wherein the gasket body is composed of a pressure-resistant metal ring, a first main sealing ring, a plurality of first O-rings, a plurality of second O-rings, a second main sealing ring, a plurality of third O-rings and a plurality of fourth O-rings, the first main sealing ring and the second main sealing ring are respectively connected to the two ends of the pressure-resistant metal ring, the first O-ring and the second O-ring are connected to one end of the pressure-resistant metal ring close to the first main sealing ring, the first O-ring and the second O-ring are respectively located at the outer ring and inner ring positions of the first main sealing ring, the third O-ring and the fourth O-ring are connected to one end of the pressure-resistant metal ring close to the second main sealing ring, and the third O-ring and the fourth O-ring are respectively located at the outer ring and inner ring positions of the second main sealing ring.

[0005] Preferably, an annular inner groove is formed at the center of the first main sealing ring and the second main sealing ring.

[0006] Preferably, one end of the pressure-resistant metal ring is provided with an annular groove 1 matching the first main sealing ring, and the other end of the pressure-resistant metal ring is provided with an annular groove 2 matching the second main sealing ring.

[0007] Preferably, a first boride ceramic heat-insulating layer is fixedly provided on the inner surface of the first annular groove, and a second boride ceramic heat-insulating layer is fixedly provided on the inner surface of the second annular groove.

[0008] Preferably, the pressure-resistant metal ring has a plurality of annular mounting grooves 1 matching the first O-ring and annular mounting grooves 2 matching the second O-ring at one end thereof close to annular groove 1, and annular mounting grooves 3 matching the third O-ring and annular mounting grooves 4 matching the fourth O-ring at one end thereof close to annular groove 2.

[0009] Preferably, the arc-shaped outer surface of the pressure-resistant metal ring is fixedly provided with a boride ceramic heat-insulating outer layer, and the arc-shaped inner surface of the pressure-resistant metal ring is fixedly provided with a boride ceramic heat-insulating inner layer.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) During operation, by providing a gasket body consisting of a pressure-resistant metal ring, a first main sealing ring, a plurality of first O-rings, a plurality of second O-rings, a second main sealing ring, a plurality of third O-rings and a plurality of fourth O-rings, primary sealing protection can be achieved through the first O-ring, the second O-ring, the third O-ring and the fourth O-ring. By matching the pressure-resistant metal ring, the first main sealing ring and the second main sealing ring can be sealed to avoid direct exposure of the first main sealing ring and the second main sealing ring to a high temperature environment and direct contact with a high temperature fluid, thereby improving anti-aging performance and further improving service life.

[0012] (2) By providing an annular groove 1, an annular groove 2, an annular installation groove 1, annular installation groove 2, annular installation groove 3 and annular installation groove 4, the first main seal ring, the first O-ring, the second O-ring, the second main seal ring, the third O-ring and the fourth O-ring can be installed and limited. By providing a boride ceramic insulation layer 1, a boride ceramic insulation layer 2, a boride ceramic insulation outer layer and a boride ceramic insulation inner layer, thermal insulation performance can be achieved, and the heat transfer to the first main seal ring and the second main seal ring can be effectively reduced, thereby prolonging the service life of the first main seal ring and the second main seal ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached picture:

[0015] Figure 1 This is a schematic diagram of the structure of the high temperature aging resistant composite gasket of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the compression-resistant metal ring of the utility model;

[0017] Figure 3 This is a cross-sectional view of the high temperature aging resistant composite gasket of the utility model;

[0018] Figure 4 For this utility model Figure 3 A partial enlarged view of

[0019] Figure 5 This is a cross-sectional view of the compression-resistant metal ring of the utility model;

[0020] Figure 6 For this utility model Figure 5 A partial enlarged view of

[0021] In the figure: 1. gasket body; 2. pressure-resistant metal ring; 3. first main sealing ring; 4. first O-ring; 5. second O-ring; 6. second main sealing ring; 7. third O-ring; 8. fourth O-ring; 9. annular inner groove; 10. annular groove one; 11. annular groove two; 12. boride ceramic insulation layer one; 13. boride ceramic insulation layer two; 14. annular mounting groove one; 15. annular mounting groove two; 16. annular mounting groove three; 17. annular mounting groove four; 18. boride ceramic insulation outer layer; 19. boride ceramic insulation inner layer. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Depend on Figures 1 to 4 The utility model provides a high temperature aging resistant composite gasket structure, comprising a gasket body 1, the gasket body 1 is composed of a pressure-resistant metal ring 2, a first main sealing ring 3, a plurality of first O-rings 4, a plurality of second O-rings 5, a second main sealing ring 6, a plurality of third O-rings 7 and a plurality of fourth O-rings 8, the first main sealing ring 3 and the second main sealing ring 6 are respectively connected to the two ends of the pressure-resistant metal ring 2, the first O-ring 4 and the second O-ring 5 are connected to one end of the pressure-resistant metal ring 2 close to the first main sealing ring 3, the first O-ring 4 and the second O-ring 5 are respectively located at the outer ring and inner ring positions of the first main sealing ring 3, the third O-ring 7 and the fourth O-ring 8 are connected to one end of the pressure-resistant metal ring 2 close to the second main sealing ring 6, and the third O-ring 7 and the fourth O-ring 8 are respectively located at the outer ring and inner ring positions of the second main sealing ring 6;

[0024] When in use, the main sealing function is realized by the first main sealing ring 3 and the second main sealing ring 6, and the auxiliary sealing can be realized by the first O-ring 4, the second O-ring 5, the third O-ring 7 and the fourth O-ring 8. At the same time, the first main sealing ring 3 and the second main sealing ring 6 are isolated by the first O-ring 4, the second O-ring 5, the third O-ring 7 and the fourth O-ring 8 to prevent the first main sealing ring 3 and the second main sealing ring 6 from directly contacting with the high-temperature fluid, thereby improving the aging resistance of the first main sealing ring 3 and the second main sealing ring 6, and the pressure resistance can be improved by the pressure-resistant metal ring 2;

[0025] Depend on Figures 2 to 6 It is shown that the first main sealing ring 3 and the second main sealing ring 6 are both provided with an annular inner groove 9 at the center position inside, an annular groove 10 matching the first main sealing ring 3 is provided at one end of the pressure-resistant metal ring 2, and an annular groove 2 11 matching the second main sealing ring 6 is provided at the other end of the pressure-resistant metal ring 2. A boride ceramic heat insulation layer 12 is fixedly provided on the inner surface of the annular groove 10, and a boride ceramic heat insulation layer 2 13 is fixedly provided on the inner surface of the annular groove 2. The end of the pressure-resistant metal ring 2 close to the annular groove 10 A plurality of annular mounting grooves 14 matching the first O-ring 4 and annular mounting grooves 2 15 matching the second O-ring 5 are provided, annular mounting grooves 3 16 matching the third O-ring 7 and annular mounting grooves 4 17 matching the fourth O-ring 8 are provided at one end of the pressure-resistant metal ring 2 close to the annular groove 2 11, a boride ceramic heat-insulating outer layer 18 is fixedly provided on the arc-shaped outer surface of the pressure-resistant metal ring 2, and a boride ceramic heat-insulating inner layer 19 is fixedly provided on the arc-shaped inner surface of the pressure-resistant metal ring 2;

[0026] The first main sealing ring 3 and the second main sealing ring 6 can be installed through the annular groove 10 and the annular groove 2 11. The first O-ring 4, the second O-ring 5, the third O-ring 7 and the fourth O-ring 8 can be installed through the annular installation groove 14, the annular installation groove 2 15, the annular installation groove 3 16 and the annular installation groove 4 17. The deformation degree of the first main sealing ring 3 and the second main sealing ring 6 can be improved through the annular inner groove 9. The heat isolation can be achieved through the boride ceramic insulation layer 12, the boride ceramic insulation layer 2 13, the boride ceramic insulation outer layer 18 and the boride ceramic insulation inner layer 19, so that part of the heat cannot be transferred to the first main sealing ring 3 and the second main sealing ring 6, thereby improving the anti-aging performance of the first main sealing ring 3 and the second main sealing ring 6.

[0027] During operation, by providing a gasket body consisting of a pressure-resistant metal ring, a first main sealing ring, a plurality of first O-rings, a plurality of second O-rings, a second main sealing ring, a plurality of third O-rings and a plurality of fourth O-rings, primary sealing protection can be achieved through the first O-ring, the second O-ring, the third O-ring and the fourth O-ring, and by matching with the pressure-resistant metal ring, the first main sealing ring and the second main sealing ring can be sealed to avoid direct exposure of the first main sealing ring and the second main sealing ring to a high temperature environment and direct contact with a high temperature fluid, thereby improving anti-aging performance and further Improve service life; by arranging annular groove one, annular groove two, annular installation groove one, annular installation groove two, annular installation groove three and annular installation groove four, the first main seal ring, the first O-ring, the second O-ring, the second main seal ring, the third O-ring and the fourth O-ring can be installed and limited; by arranging boride ceramic insulation layer one, boride ceramic insulation layer two, boride ceramic insulation outer layer and boride ceramic insulation inner layer, thermal insulation performance can be achieved, and the heat transfer to the first main seal ring and the second main seal ring can be effectively reduced, thereby improving the service life of the first main seal ring and the second main seal ring.

Claims

1. A high temperature aging resistant composite gasket structure, comprising a gasket body (1), characterized in that: The gasket body (1) is composed of a pressure-resistant metal ring (2), a first main sealing ring (3), a plurality of first O-type sealing rings (4), a plurality of second O-type sealing rings (5), a second main sealing ring (6), a plurality of third O-type sealing rings (7) and a plurality of fourth O-type sealing rings (8); the first main sealing ring (3) and the second main sealing ring (6) are respectively connected to the two ends of the pressure-resistant metal ring (2); the first O-type sealing ring (4) and the second O-type sealing ring (5) are connected to one end of the pressure-resistant metal ring (2) close to the first main sealing ring (3); the first O-type sealing ring (4) and the second O-type sealing ring (5) are respectively located at the outer ring and inner ring positions of the first main sealing ring (3); the third O-type sealing ring (7) and the fourth O-type sealing ring (8) are connected to one end of the pressure-resistant metal ring (2) close to the second main sealing ring (6); the third O-type sealing ring (7) and the fourth O-type sealing ring (8) are respectively located at the outer ring and inner ring positions of the second main sealing ring (6).

2. A high temperature aging resistant composite gasket structure according to claim 1, characterized in that: An annular inner groove (9) is provided at the center position inside the first main sealing ring (3) and the second main sealing ring (6).

3. The high temperature aging resistant composite gasket structure according to claim 1, characterized in that: One end of the pressure-resistant metal ring (2) is provided with an annular groove 1 (10) matching the first main sealing ring (3), and the other end of the pressure-resistant metal ring (2) is provided with an annular groove 2 (11) matching the second main sealing ring (6).

4. A high temperature aging resistant composite gasket structure according to claim 3, characterized in that: The inner surface of the annular groove one (10) is fixedly provided with a boride ceramic heat insulation layer one (12), and the inner surface of the annular groove two (11) is fixedly provided with a boride ceramic heat insulation layer two (13).

5. The high temperature aging resistant composite gasket structure according to claim 3, characterized in that: The end of the pressure-resistant metal ring (2) close to the annular groove one (10) is provided with a plurality of annular mounting grooves one (14) matching the first O-ring (4) and annular mounting grooves two (15) matching the second O-ring (5); the end of the pressure-resistant metal ring (2) close to the annular groove two (11) is provided with annular mounting grooves three (16) matching the third O-ring (7) and annular mounting grooves four (17) matching the fourth O-ring (8).

6. The high temperature aging resistant composite gasket structure according to claim 1, characterized in that: The arc-shaped outer surface of the pressure-resistant metal ring (2) is fixedly provided with a boride ceramic heat-insulating outer layer (18), and the arc-shaped inner surface of the pressure-resistant metal ring (2) is fixedly provided with a boride ceramic heat-insulating inner layer (19).

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