Composite toughened seal

Abstract

The disclosed composite toughened sealing ring comprises an elastic sealing ring, and the elastic sealing ring is coated with a plurality of periodically arranged toughening units. The composite toughened sealing ring can be applied to a scene of long-term loading of a complex chemical field and an elastic field, has good mechanical properties, and has low cost, so that the problem of rapid aging failure caused by excessive local deformation when a pure elastic sealing ring is used can be avoided, or the problem of high processing cost and performance degradation when a metal sealing ring is used can be avoided.

Description

Technical Field

[0001] This invention belongs to the field of volatile organic liquid storage tank technology, specifically relating to a composite material toughened sealing ring. Background Technology

[0002] Volatile organic liquid storage tanks are often sealed using either purely elastic sealing rings or metal sealing rings. However, purely elastic sealing rings are prone to aging and failure, especially in applications with chemical atmospheres. Metal sealing rings, on the other hand, require strict surface treatment and material requirements, leading to increased costs. Furthermore, metal sealing rings exhibit significant degradation of their metal properties in certain chemical atmospheres.

[0003] Composite materials represent a new direction in materials development. By combining different materials and employing specialized structural designs, unique material and structural properties can be achieved. However, research on composite material design for sealing methods in volatile organic liquid storage tanks is limited. Therefore, designing a low-cost, high-performance sealing ring with composite material structural characteristics is of great significance. Summary of the Invention

[0004] The purpose of this invention is to provide a composite material toughened sealing ring, which solves the problems of easy aging and failure of purely elastic sealing rings used in volatile organic liquid storage tanks, or the high cost and metal performance degradation of metal sealing rings.

[0005] The technical solution adopted in this invention is a composite material toughened sealing ring, including an elastic sealing ring, the elastic sealing ring being covered with a plurality of periodically arranged toughening units.

[0006] The invention is further characterized in that,

[0007] The toughening unit is cubic in shape. Four sets of dispersion contact pieces are provided on the four sides of the toughening unit that are perpendicular to the cross-section of the elastic sealing ring. A circumferential toughening spring is provided between two sets of dispersion contact pieces that are not adjacent to each other. A radial toughening spring is provided between two sets of sides of the toughening unit that are parallel to the cross-section of the elastic sealing ring and are not adjacent to each other. A spherical hollow structure is provided in the center of the toughening unit.

[0008] Both the circumferentially toughened spring and the radially toughened spring are made of isotropic metallic materials.

[0009] The dispersion contact includes two vertically fixed contacts, and the connection between the two contacts is rounded; the four sets of dispersion contacts are dispersion contact a, dispersion contact b, dispersion contact c and dispersion contact d.

[0010] The circumferential toughening spring has a thickness of 0.1 to 0.2 toughening units. The circumferential toughening spring includes toughening spring a and toughening spring b. Toughening spring a is disposed between dispersion contact a and dispersion contact c, and toughening spring b is disposed between dispersion contact b and dispersion contact d.

[0011] The two planes in the thickness direction of the toughened spring a extend to the connection point of the two contacts of the dispersion contact a and dispersion contact c, respectively.

[0012] The central plane of the toughened spring a in the thickness direction extends to the connection point of the two contacts of the dispersion contact a and dispersion contact c, respectively.

[0013] The radial toughening spring has a thickness of 0.1 to 0.2 toughening units and includes toughening spring c and toughening spring d; toughening spring c and toughening spring d are set at 85° to 95°.

[0014] The diameter of the spherical hollow structure is 0.5 to 0.8 toughening units.

[0015] The elastic sealing ring is a rubber sealing ring.

[0016] The beneficial effects of this invention are:

[0017] (1) During use, the pre-tightening force generated by the sealing can be evenly distributed to the circumferential and radial toughening springs in the elastic sealing ring, so that the sealing ring has more regular deformation, thereby further obtaining more stable performance and improving service life.

[0018] (2) The composite toughened sealing ring of the present invention can be applied to scenarios with long-term loading of complex chemical and elastic fields. It has good mechanical properties and low cost, which can avoid the problem of rapid aging failure caused by excessive local deformation when using a pure elastic sealing ring; or the problem of high processing cost and performance degradation when using a metal sealing ring. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the composite material toughened sealing ring of the present invention;

[0020] Figure 2 This is a schematic diagram of the toughening unit in the composite material toughened sealing ring of the present invention;

[0021] Figure 3 This is a front view of the toughening unit in the composite toughened sealing ring of the present invention;

[0022] Figure 4 yes Figure 3 AA section view;

[0023] Figure 5 This is a right view of the toughening unit of the composite material toughened sealing ring of the present invention;

[0024] Figure 6 yes Figure 5 BB cross-sectional view;

[0025] Figure 7 This is a deformation effect diagram of the composite material toughened sealing ring of Embodiment 1 of the present invention;

[0026] Figure 8 This is a deformation effect diagram of a pure rubber sealing ring in the existing technology;

[0027] Figure 9 This is a diagram showing the effect of Misses stress distribution inside the composite toughened sealing ring of Embodiment 1 of the present invention.

[0028] In the figure, 1. Elastic sealing ring, 2. Dispersion contact a, 3. Dispersion contact b, 4. Dispersion contact c, 5. Dispersion contact d, 6. Toughening spring a, 7. Toughening spring b, 8. Toughening spring c, 9. Toughening spring d, 10. Spherical hollow structure. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0030] The structure of the composite toughened sealing ring of the present invention is as follows: Figure 1 As shown, it includes an elastic sealing ring 1, which is covered with a plurality of periodically arranged toughening units.

[0031] The toughening unit structure of the composite toughened sealing ring is as follows: Figure 2 As shown, its shape is cubic, on the one hand, combined with Figure 3-4 The front view and AA cross-sectional view of the toughening unit show that four sets of dispersion contacts are arranged on the four sides of the toughening unit perpendicular to the cross-section of the elastic sealing ring 1, and a circumferential toughening spring is arranged between two non-adjacent sets of dispersion contacts. Each set of dispersion contacts includes two vertically fixed contacts, and the connection between the two contacts adopts a rounded transition. The four sets of dispersion contacts are dispersion contact a2, dispersion contact b3, dispersion contact c4 and dispersion contact d5. The circumferential toughening spring includes toughening spring a6 and toughening spring b7. Among them, toughening spring a6 is arranged between dispersion contact a2 and dispersion contact c4, and toughening spring b7 is arranged between dispersion contact b3 and dispersion contact d5.

[0032] On the other hand, combining Figure 5-6The right view of the toughening unit and its BB cross-section show that a radial toughening spring is provided between two sets of sides that are parallel to and non-adjacent to the cross-section of the elastic sealing ring 1. The radial toughening spring includes toughening spring c8 and toughening spring d9, and toughening spring c8 and toughening spring d9 are set at an angle of 85° to 95°.

[0033] Both the circumferentially toughened spring and the radially toughened spring are made of isotropic metal material, and the thickness of the circumferentially toughened spring and the radially toughened spring is 0.1 to 0.2 toughening units. In addition, a spherical hollow structure 10 is formed in the center of the toughening unit, and the diameter of the spherical hollow structure 10 is 0.5 to 0.8 toughening units.

[0034] Taking a floating roof tank as an example, the composite material toughened sealing ring of this invention is placed in the annular space between the floating roof and the tank wall and sealed. During the sealing process, the pre-tightening force generated by the sealing is evenly distributed to the circumferential and radial toughening springs within the elastic sealing ring 1, resulting in a more regular deformation of the sealing ring and thus achieving more stable performance. In scenarios involving long-term loading of complex chemical and elastic fields, the composite material toughened sealing ring of this invention avoids the rapid aging failure caused by excessive local deformation when using a purely elastic sealing ring. Furthermore, since this invention uses the elastic sealing ring 1 to encapsulate the metal toughening unit, it reduces the cost of metal surface treatment compared to a metal sealing ring, effectively mitigating metal performance degradation.

[0035] Example 1

[0036] The composite material toughened sealing ring of the present invention includes an elastic sealing ring 1, which is covered with a plurality of periodically arranged toughening units, wherein the elastic sealing ring 1 is a rubber sealing ring.

[0037] The toughening unit is cubic in shape. Four sets of dispersion contact pieces are provided on the four sides of the toughening unit that are perpendicular to the cross-section of the elastic sealing ring 1. Each set of dispersion contact pieces includes two vertically fixed contact pieces, and the connection between the two contact pieces adopts a rounded transition. A circumferential toughening spring piece with a thickness of 0.15 toughening units is provided between two sets of non-adjacent dispersion contact pieces. The four sets of dispersed contacts are dispersed contact a2, dispersed contact b3, dispersed contact c4, and dispersed contact d5. The circumferential toughening spring includes toughening spring a6 and toughening spring a7. Toughening spring a6 is disposed between dispersed contact a2 and dispersed contact c4, and the two planes of toughening spring a6 in the thickness direction extend to the connection points of the two contacts of dispersed contact a2 and dispersed contact c4, respectively. Toughening spring b7 is disposed between dispersed contact b3 and dispersed contact d5, and the two planes of toughening spring a7 in the thickness direction extend to the connection points of the two contacts of dispersed contact a3 and dispersed contact c5, respectively.

[0038] Between two sets of non-adjacent sides parallel to the cross-section of the toughening unit and the elastic sealing ring 1, a radial toughening spring with a thickness of 0.15 toughening units is provided. The radial toughening spring includes toughening spring c8 and toughening spring d9, and toughening spring c8 and toughening spring d9 are set at 90°. Both the circumferential and radial toughening springs are made of isotropic metal. A spherical hollow structure 10 with a diameter of 0.8 toughening units is also provided at the center of the toughening unit.

[0039] Example 2

[0040] The composite material toughened sealing ring of the present invention includes an elastic sealing ring 1, which is covered with a plurality of periodically arranged toughening units, wherein the elastic sealing ring 1 is a rubber sealing ring.

[0041] The toughening unit is cubic in shape. Four sets of dispersion contact pieces are provided on the four sides of the toughening unit that are perpendicular to the cross-section of the elastic sealing ring 1. Each set of dispersion contact pieces includes two vertically fixed contact pieces, and the connection between the two contact pieces adopts a rounded transition. A circumferential toughening spring piece with a thickness of 0.15 toughening units is provided between two sets of non-adjacent dispersion contact pieces. The four sets of dispersed contacts are dispersed contact a2, dispersed contact b3, dispersed contact c4, and dispersed contact d5. The circumferential toughening spring includes toughening spring a6 and toughening spring a7. Toughening spring a6 is disposed between dispersed contact a2 and dispersed contact c4. The central plane of toughening spring a6 in the thickness direction extends to the connection point of the two contacts of dispersed contact a2 and dispersed contact c4. Toughening spring b7 is disposed between dispersed contact b3 and dispersed contact d5. The central plane of toughening spring a7 in the thickness direction extends to the connection point of the two contacts of dispersed contact a3 and dispersed contact c5.

[0042] Between two sets of non-adjacent sides parallel to the cross-section of the toughening unit and the elastic sealing ring 1, a radial toughening spring with a thickness of 0.15 toughening units is provided. The radial toughening spring includes toughening spring c8 and toughening spring d9, and toughening spring c8 and toughening spring d9 are set at 90°. Both the circumferential and radial toughening springs are made of isotropic metal. A spherical hollow structure 10 with a diameter of 0.8 toughening units is also provided at the center of the toughening unit.

[0043] Example 3

[0044] The composite material toughened sealing ring of the present invention includes an elastic sealing ring 1, which is covered with a plurality of periodically arranged toughening units, wherein the elastic sealing ring 1 is a rubber sealing ring.

[0045] The toughening unit is cubic in shape. Four sets of dispersion contact pieces are provided on the four sides of the toughening unit that are perpendicular to the cross-section of the elastic sealing ring 1. Each set of dispersion contact pieces includes two vertically fixed contact pieces, and the connection between the two contact pieces adopts a rounded transition. A circumferential toughening spring piece with a thickness of 0.1 toughening unit is provided between two sets of non-adjacent dispersion contact pieces. The four sets of dispersed contacts are dispersed contact a2, dispersed contact b3, dispersed contact c4, and dispersed contact d5. The circumferential toughening spring includes toughening spring a6 and toughening spring a7. Toughening spring a6 is disposed between dispersed contact a2 and dispersed contact c4, and the two planes of toughening spring a6 in the thickness direction extend to the connection points of the two contacts of dispersed contact a2 and dispersed contact c4, respectively. Toughening spring b7 is disposed between dispersed contact b3 and dispersed contact d5, and the two planes of toughening spring a7 in the thickness direction extend to the connection points of the two contacts of dispersed contact a3 and dispersed contact c5, respectively.

[0046] Between two sets of non-adjacent sides parallel to the cross-section of the toughening unit and the elastic sealing ring 1, a radial toughening spring with a thickness of 0.1 toughening units is provided. The radial toughening spring includes toughening spring c8 and toughening spring d9, and toughening spring c8 and toughening spring d9 are set at 85°. Both the circumferential and radial toughening springs are made of isotropic metal. A spherical hollow structure 10 with a diameter of 0.5 toughening units is also provided at the center of the toughening unit.

[0047] Example 4

[0048] The composite material toughened sealing ring of the present invention includes an elastic sealing ring 1, which is covered with a plurality of periodically arranged toughening units, wherein the elastic sealing ring 1 is a rubber sealing ring.

[0049] The toughening unit is cubic in shape. Four sets of dispersion contact pieces are provided on the four sides of the toughening unit that are perpendicular to the cross-section of the elastic sealing ring 1. Each set of dispersion contact pieces includes two vertically fixed contact pieces, and the connection between the two contact pieces adopts a rounded transition. A circumferential toughening spring piece with a thickness of 0.1 toughening unit is provided between two sets of non-adjacent dispersion contact pieces. The four sets of dispersed contacts are dispersed contact a2, dispersed contact b3, dispersed contact c4, and dispersed contact d5. The circumferential toughening spring includes toughening spring a6 and toughening spring a7. Toughening spring a6 is disposed between dispersed contact a2 and dispersed contact c4. The central plane of toughening spring a6 in the thickness direction extends to the connection point of the two contacts of dispersed contact a2 and dispersed contact c4. Toughening spring b7 is disposed between dispersed contact b3 and dispersed contact d5. The central plane of toughening spring a7 in the thickness direction extends to the connection point of the two contacts of dispersed contact a3 and dispersed contact c5.

[0050] Between two sets of non-adjacent sides parallel to the cross-section of the toughening unit and the elastic sealing ring 1, a radial toughening spring with a thickness of 0.1 toughening units is provided. The radial toughening spring includes toughening spring c8 and toughening spring d9, and toughening spring c8 and toughening spring d9 are set at 85°. Both the circumferential and radial toughening springs are made of isotropic metal. A spherical hollow structure 10 with a diameter of 0.6 toughening units is also provided at the center of the toughening unit.

[0051] Example 5

[0052] The composite material toughened sealing ring of the present invention includes an elastic sealing ring 1, which is covered with a plurality of periodically arranged toughening units, wherein the elastic sealing ring 1 is a rubber sealing ring.

[0053] The toughening unit is cubic in shape. Four sets of dispersion contact pieces are provided on the four sides of the toughening unit that are perpendicular to the cross-section of the elastic sealing ring 1. Each set of dispersion contact pieces includes two vertically fixed contact pieces, and the connection between the two contact pieces adopts a rounded transition. Between two sets of non-adjacent dispersion contact pieces, there are circumferential toughening springs with a thickness of 0.2 toughening units. The four sets of dispersed contacts are dispersed contact a2, dispersed contact b3, dispersed contact c4, and dispersed contact d5. The circumferential toughening spring includes toughening spring a6 and toughening spring a7. Toughening spring a6 is disposed between dispersed contact a2 and dispersed contact c4, and the two planes of toughening spring a6 in the thickness direction extend to the connection points of the two contacts of dispersed contact a2 and dispersed contact c4, respectively. Toughening spring b7 is disposed between dispersed contact b3 and dispersed contact d5, and the two planes of toughening spring a7 in the thickness direction extend to the connection points of the two contacts of dispersed contact a3 and dispersed contact c5, respectively.

[0054] Between two sets of non-adjacent sides parallel to the cross-section of the toughening unit and the elastic sealing ring 1, a radial toughening spring with a thickness of 0.2 toughening units is provided. The radial toughening spring includes toughening spring c8 and toughening spring d9, and toughening spring c8 and toughening spring d9 are set at 95°. Both the circumferential and radial toughening springs are made of isotropic metal. A spherical hollow structure 10 with a diameter of 0.7 toughening units is also provided at the center of the toughening unit.

[0055] Performance testing

[0056] The present invention conducted deformation tests on the composite toughened sealing ring and the pure rubber sealing ring of Example 1, respectively. The deformation effect of the composite toughened sealing ring of Example 1 is as follows: Figure 7 As shown, the deformation effect of the pure rubber sealing ring is as follows: Figure 8As shown in the figure, the greater the deformation, the darker the color of the effect diagram. It can be seen from the figure that under the conditions of a 5 MPa pressure, a fixed bottom for the sealing ring, and simply supported boundaries, the composite toughened sealing ring of this invention exhibits significant deformation only in the untoughened areas. Furthermore, due to the presence of circumferential and radial toughening springs, the stress is evenly distributed, which is extremely effective in improving the sealing ring's lifespan and sealing performance. In contrast, the pure rubber sealing ring experiences significant overall deformation.

[0057] The effect of Misses stress distribution inside the composite toughened seal ring in Example 1 is as follows: Figure 9 As shown in the figure, the darker the color, the greater the Misses stress. It can be seen from the figure that the main stress of the composite toughened sealing ring of the present invention is borne and dispersed by the circumferential toughening spring and the radial toughening spring. On the one hand, it can avoid the problem of rapid aging failure caused by excessive local deformation when using a purely elastic sealing ring. On the other hand, since the present invention uses an elastic sealing ring to cover the metal toughening unit, it can reduce the cost of metal surface treatment compared with a metal sealing ring and effectively alleviate the problem of metal performance degradation.

[0058] The deformation tests described above show that the composite toughened sealing ring of the present invention has better mechanical properties and lower cost compared with pure elastic sealing rings and metal sealing rings, which is of great significance for the complex chemical and elastic field loading scenarios in the field of volatile organic liquid storage tanks.

Claims

1. A composite toughened seal ring, characterised in that, It includes an elastic sealing ring (1), which is covered with a plurality of periodically arranged toughening units; The toughening unit is cubic in shape. Four sets of dispersed contact pieces are provided on the four sides of the toughening unit that are perpendicular to the cross-section of the elastic sealing ring (1), and a circumferential toughening spring is provided between two sets of dispersed contact pieces that are not adjacent to each other. A radial toughening spring is provided between two sets of sides of the toughening unit that are parallel to the cross-section of the elastic sealing ring (1) and are not adjacent to each other. A spherical hollow structure (10) is provided in the center of the toughening unit. The dispersion contact includes two vertically fixed contact pieces, and the connection between the two contact pieces is rounded; the four sets of dispersion contact pieces are dispersion contact a (2), dispersion contact b (3), dispersion contact c (4) and dispersion contact d (5). The thickness of the circumferential toughening spring is 0.1~0.2 toughening units. The circumferential toughening spring includes toughening spring a (6) and toughening spring b (7). The toughening spring a (6) is disposed between the dispersing contact a (2) and the dispersing contact c (4). The toughening spring b (7) is disposed between the dispersing contact b (3) and the dispersing contact d (5). The radial toughening spring has a thickness of 0.1 to 0.2 toughening units, and the radial toughening spring includes toughening spring c (8) and toughening spring d (9); the toughening spring c (8) and toughening spring d (9) are set at 85° to 95°.

2. The composite flexing seal of claim 1, wherein, The circumferentially toughened spring and the radially toughened spring are made of isotropic metallic materials.

3. The composite flexing seal of claim 1, wherein, The two planes of the toughened spring a (6) in the thickness direction extend to the connection points of the two contacts of the dispersion contact a (2) and dispersion contact c (4), respectively, and the two planes of the toughened spring b (7) in the thickness direction extend to the connection points of the two contacts of the dispersion contact b (3) and dispersion contact d (5), respectively.

4. The composite flexing seal of claim 1, wherein, The central plane of the toughened spring a (6) in the thickness direction extends to the connection point of the two contacts of the dispersing contact a (2) and the dispersing contact c (4), respectively. The central plane of the toughened spring b (7) in the thickness direction extends to the connection point of the two contacts of the dispersing contact b (3) and the dispersing contact d (5), respectively.

5. The composite flexing seal of claim 1 or 2, wherein, The diameter of the spherical hollow structure (10) is 0.5 to 0.8 toughening units.

6. The composite flexing seal of claim 1, wherein, The elastic sealing ring (1) is a rubber sealing ring.

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