CN215763273U - Multi-curved-surface rubber fabric composite sealing device - Google Patents
Multi-curved-surface rubber fabric composite sealing device Download PDFInfo
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- CN215763273U CN215763273U CN202121703422.7U CN202121703422U CN215763273U CN 215763273 U CN215763273 U CN 215763273U CN 202121703422 U CN202121703422 U CN 202121703422U CN 215763273 U CN215763273 U CN 215763273U
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Abstract
The utility model discloses a multi-curved surface rubber fabric composite sealing device, which is of an annular structure integrally and comprises a sealing part and a central through hole, wherein the vertical section of the sealing part is in a multi-curved surface wave shape, and a plurality of groups of opening parts are respectively formed at the wave crests and the wave troughs of the sealing part; the sealing part is composed of a first rubber layer, a first fabric reinforcing layer, an adhesion promoting layer, a second fabric reinforcing layer and a second rubber layer in sequence; the structure of the utility model adopts a multi-curved surface and multi-angle design, realizes multi-direction resistance-free rotation of the engine spray pipe, and solves the problem of large frictional resistance of the rubber sealing ring; secondly, the utility model adopts the rubber and synthetic fiber composite integral molding process, realizes the characteristics of high strength and aging resistance of the product, and effectively prolongs the service life of the engine; thirdly, the opening parts at the upper end and the lower end of the engine casing are designed to be in tight fit with the metal piece, and the sealing device is tightly connected with the metal casing through directly matching with the threaded hole, so that the engine casing is protected.
Description
Technical Field
The utility model belongs to the technical field of rubber sealing, and particularly relates to a multi-curved-surface rubber fabric composite sealing device.
Background
In recent years, along with the rapid development of the aerospace industry in China, the requirement of the industry on the pressure bearing performance of a rocket engine nozzle is higher and higher, in order to meet the design requirement and overcome the defect of higher friction resistance of a rubber sealing ring at the movable connection part of the nozzle, a rubber high-temperature-resistant sealing element is required to be developed to seal and protect metal parts, the rubber high-temperature-resistant sealing element is mainly used for being installed at the rear side of the solid rocket engine nozzle, the leakage of high-temperature and high-pressure fuel gas at the position of the engine nozzle can be effectively prevented, meanwhile, the metal parts of the engine are limited to rotate and twist around an axis relative to a fixed body, and the rubber high-temperature-resistant sealing element has important significance for improving the reliability and stability of the rocket engine.
Disclosure of Invention
The utility model aims to provide a multi-curved-surface rubber fabric composite sealing device, which solves the problems of large frictional resistance, short service life, insufficient protection effect and the like of the conventional rubber sealing ring.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
a multi-curved surface rubber fabric composite sealing device is of an annular structure as a whole and comprises a sealing part and a central through hole, wherein the vertical section of the sealing part is in a multi-curved surface wave shape, and a plurality of groups of opening parts are formed at the wave crests and the wave troughs of the sealing part respectively; the sealing part is composed of a first rubber layer, a first fabric reinforcing layer, an adhesion promoting layer, a second fabric reinforcing layer and a second rubber layer in sequence.
Further, the sealing part is a hyperboloid wave-shaped structure, and the inner angle of the first wave-shaped structure is smaller than that of the second wave-shaped structure from inside to outside.
Further, the wave troughs of the second wave structures of the sealing parts are lower than the lower edge of the central through hole.
Further, the sealing part is a three-curved-surface wave structure, and the inner angle of the first wave structure is equal to the inner angle of the second wave structure from inside to outside.
Furthermore, the wave trough of the second wave structure of the sealing part is lower than the lower edge of the central through hole, and the wave crest of the third wave structure is higher than the wave crest of the first wave structure.
Further, the opening part is provided with a threaded hole and can be used for being connected with a component to be sealed.
Further, the first rubber layer and the second rubber layer are both chloroprene rubber.
Further, the first fabric reinforcing layer and the second fabric reinforcing layer are made of nylon silk rubberized fabric.
Further, the adhesion promotion layer is a mixed coating of epoxy resin and polyisocyanate.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a multi-curved surface rubber fabric composite sealing device, which adopts a multi-curved surface and multi-angle design in the structure, can realize multi-direction resistance-free rotation of an engine spray pipe, and solves the problem of larger frictional resistance of a rubber sealing ring; secondly, the utility model adopts the rubber and synthetic fiber composite integral molding process, realizes the characteristics of high strength and aging resistance of the product, and effectively prolongs the service life of the engine; thirdly, the opening parts at the upper end and the lower end of the engine casing are designed to be tightly matched with the metal piece, and the sealing device and the metal casing can be tightly connected into a whole through directly matching with the threaded hole, so that the engine casing is simple and reliable to install, and can be protected.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is a cross-sectional view of fig. 1.
FIG. 3 is a sectional view of example 2 of the present invention.
Fig. 4 is a schematic cross-sectional view of the sealing portion of the present invention.
In the figure, 1-a first wave structure, 2-a second wave structure, 3-a third wave structure, 4-a sealing part, 5-a central through hole, 6-a first rubber layer, 7-a first fabric reinforcing layer, 8-an adhesion promoting layer, 9-a second fabric reinforcing layer and 10-a second rubber layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1 and 2, the sealing device is of an annular structure, and comprises a sealing part 4 and a central through hole 5, wherein the sealing part 4 is of a multi-curved-surface wave shape in vertical section, a plurality of groups of openings are formed at the wave crest and the wave trough of the sealing part 4 respectively, and the openings are provided with threaded holes and can be connected with a fixed shell and a diffusion section shell of an engine spray pipe respectively to realize a sealing protection function; the seal portion 4 is composed of a first rubber layer 6, a first fabric reinforcing layer 7, an adhesion promoting layer 8, a second fabric reinforcing layer 9 and a second rubber layer 10 in this order.
Referring to fig. 4, in the present embodiment, the first rubber layer 6 and the second rubber layer 9 are made of neoprene, and the preparation process includes preparing rubber compound, cutting the rubber compound into fan-shaped and rectangular shapes according to the curved surface structure of the sealing portion 4 after the rubber compound is produced; the first fabric reinforcing layer 7 and the second fabric reinforcing layer 9 are both nylon silk rubberized fabric, and the preparation process is to cut the nylon silk rubberized fabric into a fan-shaped structure according to the curved surface structure of the sealing part 4; the tackifying layer 8 is a mixed coating of epoxy resin and polyisocyanate, and the preparation process comprises the steps of treating the surface of the nylon silk by using an epoxy resin aqueous solution, uniformly coating 5-8 layers of chloroprene rubber glue solution, and adding 3% of polyisocyanate solution when coating the first glue solution layers on the front surface and the back surface; the whole preparation process of the sealing part 4 comprises the steps of preheating the cut rubber layer and the fabric reinforcing layer, sequentially filling the rubber layer and the fabric reinforcing layer into a die cavity according to the sequence of the first rubber layer, the second fabric reinforcing layer, the third fabric reinforcing layer and the fourth rubber layer, overlapping joints by 30-50mm, exhausting air between every two layers to ensure close fitting and no air bubbles, carrying out vulcanization treatment after closing and shaping the die and exhausting for 5-8 times, wherein the vulcanization condition is that the temperature is 150 ℃, the time is 50min, the pressure is 10-15MPa, and after the vulcanization treatment is finished, unloading the die.
In the embodiment, the sealing part 4 is a hyperboloid wave-shaped structure, and the inner angle of the first wave structure 1 is smaller than that of the second wave structure 2 from inside to outside; the wave trough of the second wave structure 2 of the sealing part 4 is lower than the lower edge of the central through hole 5.
Example 2:
referring to fig. 3, unlike the embodiment 1, the sealing part 4 is a three-curved-surface wave-shaped structure, and the inner angle of the first wave-shaped structure 1 is equal to the inner angle of the second wave-shaped structure 2 and is equal to the inner angle of the third wave-shaped structure 3 from inside to outside; the wave trough of the second wave structure 2 of the sealing part 4 is lower than the lower edge of the central through hole 5, and the wave crest of the third wave structure 3 is higher than the wave crest of the first wave structure 1.
The above are specific embodiments of the present invention, but the structural features of the present invention are not limited thereto, and the present invention can be applied to similar products, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (9)
1. The multi-curved-surface rubber fabric composite sealing device is characterized in that the whole sealing device is of an annular structure and comprises a sealing part (4) and a central through hole (5), the vertical section of the sealing part (4) is in a multi-curved-surface wave shape, and a plurality of groups of openings are formed in the wave crests and the wave troughs of the sealing part (4) respectively; the sealing part (4) is composed of a first rubber layer (6), a first fabric reinforcing layer (7), an adhesion promoting layer (8), a second fabric reinforcing layer (9) and a second rubber layer (10) in sequence.
2. The multi-curved surface rubber fabric composite sealing device according to claim 1, wherein the sealing part (4) is a hyperboloid wave-shaped structure, and the inner angle of the first wave-shaped structure (1) is smaller than that of the second wave-shaped structure (2) from inside to outside.
3. The multi-curved rubber-textile composite sealing device of claim 2, wherein the wave trough of the second wave structure (2) of the sealing part (4) is lower than the lower edge of the central through hole (5).
4. The multi-curved surface rubber fabric composite sealing device according to claim 1, wherein the sealing portion (4) is a three-curved surface wave structure, and the inner angle of the first wave structure (1) is equal to the inner angle of the second wave structure (2) and the inner angle of the third wave structure (3) from inside to outside.
5. The multi-curved surface rubber fabric composite sealing device according to claim 4, wherein the wave trough of the second wave structure (2) of the sealing part (4) is lower than the lower edge of the central through hole (5), and the wave crest of the third wave structure (3) is higher than the wave crest of the first wave structure (1).
6. The multi-curved rubber textile composite sealing device of claim 1, wherein said opening portion is provided with a threaded hole for connecting with a member to be sealed.
7. The multifaceted rubber textile composite sealing device according to claim 1, wherein the first rubber layer (6) and the second rubber layer (9) are both neoprene.
8. The compound sealing device of multi-curved surface rubber fabric according to claim 1, characterized in that the first fabric reinforcing layer (7) and the second fabric reinforcing layer (9) are all nylon silk rubberized fabric.
9. The multi-curved rubber fabric composite sealing device according to claim 1, wherein the adhesion promoting layer (8) is a mixed coating of epoxy resin and polyisocyanate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121703422.7U CN215763273U (en) | 2021-07-26 | 2021-07-26 | Multi-curved-surface rubber fabric composite sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121703422.7U CN215763273U (en) | 2021-07-26 | 2021-07-26 | Multi-curved-surface rubber fabric composite sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215763273U true CN215763273U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121703422.7U Active CN215763273U (en) | 2021-07-26 | 2021-07-26 | Multi-curved-surface rubber fabric composite sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215763273U (en) |
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2021
- 2021-07-26 CN CN202121703422.7U patent/CN215763273U/en active Active
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