A two-stage filler metal wound gasket

Abstract

The utility model relates to sealing technical field, and disclose a kind of two section filling metal winding mat, including outer ring, the inner side of outer ring is connected with first mica tape, the inner side of first mica tape is connected with filling band, the inner side of filling band is connected with second mica tape, the inner side of second mica tape is connected with inner ring, the top and bottom of outer ring are equipped with first pad, the top and bottom of inner ring are equipped with second pad.This two section filling metal winding mat, when it is installed between flange, after bolt tightening, circumferential distribution first pad and second pad can help evenly dispersed pressure or vibration, improve the stability and sealing performance of overall structure, first mica tape and second mica tape can make this winding mat closely adhere on flange, form better sealing environment, and graphite material filling band can improve the heat resistance of this metal winding mat, and provide higher buffering capacity, so that overall structure always maintains the compression force to flange.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, specifically to a two-section filled metal spiral wound gasket. Background Technology

[0002] In industries such as petrochemicals, power, metallurgy, and pharmaceuticals, sealing components are crucial for pipeline connections and equipment sealing in high-temperature, high-pressure, and highly corrosive media environments. To ensure the safe and stable operation of the system, the performance of the sealing components is particularly critical.

[0003] Traditional metal spiral wound gaskets have a relatively simple sealing structure, using a single filler structure, which results in poor adaptability. Furthermore, the use of only a single filler material makes them prone to leakage under certain special working conditions, leading to seal failure. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a two-section filled metal winding pad to solve the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a two-section filled metal spiral wound pad, comprising an outer ring, a first mica tape connected to the inner side of the outer ring, a filling tape connected to the inner side of the first mica tape, a second mica tape connected to the inner side of the filling tape, and an inner ring connected to the inner side of the second mica tape. A first pad block is installed at the top and bottom of the outer ring, and a second pad block is installed at the top and bottom of the inner ring.

[0008] Preferably, a first groove is formed on the outer side of the first mica strip, and a first protrusion is installed on the inner side of the outer ring, with the first protrusion engaging inside the first groove.

[0009] Preferably, a second protrusion is installed on the inner side of the second mica strip, and a second groove is provided on the outer side of the inner ring, with the second protrusion engaging in the second groove.

[0010] Preferably, a filler tape made of graphite is interlocked between the first mica tape and the second mica tape.

[0011] Preferably, the first pad is circumferentially distributed at the top and bottom of the outer ring, and the second pad is circumferentially distributed at the top and bottom of the inner ring. The first pad and the second pad have a trapezoidal structure.

[0012] Preferably, the first mica strip on the inner side of the outer ring accounts for 25%, the second mica strip on the outer side of the inner ring accounts for 25%, and the filling strip accounts for 50%.

[0013] Compared with the prior art, this utility model provides a two-section filled metal spiral wound gasket, which has the following beneficial effects: When the two-section filled metal spiral wound gasket is installed between flanges, after the bolts are tightened, the circumferentially distributed first and second gasket blocks can help to evenly distribute pressure or vibration, improve the stability and sealing performance of the overall structure, the outer and inner rings made of metal can provide strength and resilience, the first and second mica tapes can make the spiral wound gasket fit tightly against the flange, forming a better sealing environment, and the graphite filler tape can improve the heat resistance of the metal spiral wound gasket and provide high buffering capacity, so that the overall structure always maintains the compressive force on the flange. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the inner ring structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the first protrusion structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the first pad structure of this utility model.

[0018] In the figure: 1. Outer ring; 2. First mica tape; 3. Filler tape; 4. Second mica tape; 5. Inner ring; 6. First protrusion; 7. First groove; 8. Second protrusion; 9. Second groove; 10. First pad; 11. Second pad. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1-4 As shown, this utility model provides a technical solution: a two-section filled metal spiral wound pad, including an outer ring 1, a first mica tape 2 connected to the inner side of the outer ring 1, a filling tape 3 connected to the inner side of the first mica tape 2, a second mica tape 4 connected to the inner side of the filling tape 3, an inner ring 5 connected to the inner side of the second mica tape 4, a first pad block 10 installed at the top and bottom of the outer ring 1, and a second pad block 11 installed at the top and bottom of the inner ring 5.

[0021] Furthermore, a first groove 7 is provided on the outer side of the first mica strip 2, and a first protrusion 6 is installed on the inner side of the outer ring 1, with the first protrusion 6 engaging inside the first groove 7.

[0022] Specifically, the first protrusion 6 and the first groove 7 ensure that the first mica strip 2 can be firmly attached to the outer ring 1, thereby improving the stability of the structure.

[0023] Furthermore, a second protrusion 8 is installed on the inner side of the second mica strip 4, and a second groove 9 is opened on the outer side of the inner ring 5, with the second protrusion 8 engaging in the second groove 9.

[0024] Specifically, the second protrusion 8 and the second groove 9 ensure that the second mica strip 4 can be firmly attached to the inner ring 5, thereby improving the stability of the structure.

[0025] Furthermore, a filler strip 3, made of graphite, is interlocked between the first mica strip 2 and the second mica strip 4.

[0026] Specifically, the graphite-based filler tape 3 has good high-temperature resistance and sealing performance, improving the stability of the metal spiral wound gasket.

[0027] Furthermore, the first pad 10 is circumferentially distributed at the top and bottom of the outer ring 1, and the second pad 11 is circumferentially distributed at the top and bottom of the inner ring 5. The first pad 10 and the second pad 11 have a trapezoidal structure.

[0028] Specifically, a uniform circumferential arrangement helps to evenly distribute pressure or vibration, improving the overall structural stability and sealing performance, while a stepped shape enhances the sealing and cushioning effect.

[0029] Furthermore, the first mica strip 2 inside the outer ring 1 accounts for 25%, the second mica strip 4 outside the inner ring 5 accounts for 25%, and the filling strip 3 accounts for 50%.

[0030] Specifically, the larger filling strip 3 is used for cushioning and sealing, covering the gap between the first mica strip 2 and the second mica strip 4 at both ends, and playing a dual role of connection and sealing.

[0031] Working principle: First, the inner side of the outer ring 1 is connected to the first mica strip 2, and the inner side of the first mica strip 2 is connected to the filler strip 3. The filler strip 3 is made of graphite and has good high temperature resistance and sealing performance. The filler strip 3 is located between the first mica strip 2 and the second mica strip 4 to enhance heat conduction and heat dissipation. The inner side of the second mica strip 4 is connected to the inner ring 5. Second, the first protrusion 6 and the first groove 7, the second protrusion 8 and the second groove 9 can optimize the connection structure and improve the overall stability. Finally, the top and bottom of the outer ring 1 are equipped with the first pad 10, and the top and bottom of the inner ring 5 are equipped with the second pad 11. The first pad 10 and the second pad 11 make the connection more robust and can better adapt to thermal expansion.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-segment filled metal spiral wound pad, comprising an outer ring (1), characterized in that: The inner side of the outer ring (1) is connected to a first mica tape (2), the inner side of the first mica tape (2) is connected to a filling tape (3), the inner side of the filling tape (3) is connected to a second mica tape (4), the inner side of the second mica tape (4) is connected to an inner ring (5), the top and bottom of the outer ring (1) are equipped with a first pad (10), and the top and bottom of the inner ring (5) are equipped with a second pad (11).

2. The two-segment filled metal spiral wound pad according to claim 1, characterized in that: The first mica strip (2) has a first groove (7) on its outer side, and a first protrusion (6) is installed on the inner side of the outer ring (1). The first protrusion (6) is engaged inside the first groove (7).

3. The two-segment filled metal spiral wound pad according to claim 1, characterized in that: The inner side of the second mica strip (4) is provided with a second protrusion (8), and the outer side of the inner ring (5) is provided with a second groove (9). The second protrusion (8) is engaged in the second groove (9).

4. The two-segment filled metal spiral wound pad according to claim 1, characterized in that: A filler tape (3) made of graphite is engaged between the first mica tape (2) and the second mica tape (4).

5. A two-segment filled metal spiral wound pad according to claim 1, characterized in that: The first pad (10) is circumferentially distributed at the top and bottom of the outer ring (1), and the second pad (11) is circumferentially distributed at the top and bottom of the inner ring (5). The first pad (10) and the second pad (11) are trapezoidal structures.

6. The two-segment filled metal spiral wound pad according to claim 1, characterized in that: The first mica strip (2) inside the outer ring (1) accounts for 25%, the second mica strip (4) outside the inner ring (5) accounts for 25%, and the filling strip (3) accounts for 50%.

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