Gasket made of high-temperature-resistant composite material

Abstract

The utility model discloses a high-temperature-resistant composite material gasket which comprises a gasket body, sealing grooves are formed in the top and the bottom of the gasket body respectively, sealing gaskets are arranged in the sealing grooves, and the two sealing gaskets are coaxially and oppositely arranged. The sealing groove is internally provided with a self-adaption piece which is used for conducting self-adaption adjustment to apply acting force to the sealing gasket when the working environment temperature of the gasket changes. The high-temperature-resistant gasket solves the problems that a traditional gasket is not resistant to high temperature, and a sealing gasket on the gasket is prone to generating a seam with an external abutting tool under the high-temperature working condition or the sealing gasket deforms and loosens.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gasket, specifically to a high-temperature-resistant composite material gasket. BACKGROUND

[0002] In many industrial fields, such as chemical production, power energy, metallurgical manufacturing, etc., the equipment often operates in high-temperature environment. In these high-temperature working conditions, as a key sealing component, the performance of the gasket directly affects the normal operation and safety of the equipment. The traditional gasket is usually made of a single material, and its high-temperature resistance is limited. When the working environment temperature rises, the gasket material is prone to softening, deformation, and even decomposition, resulting in sealing failure. At the same time, the sealing gasket on the traditional gasket also faces many problems at high temperature. On the one hand, due to the thermal expansion and cold shrinkage effect, a joint between the sealing gasket and the external abutting tooling is easy to appear, which makes the medium have the risk of leakage. On the other hand, high temperature may cause the sealing gasket to deform and loosen, further weakening the sealing effect. This sealing failure not only reduces the operating efficiency of the equipment, but also may cause safety accidents, such as environmental pollution and personnel injury caused by leakage of chemical medium, and short circuit fault caused by poor sealing of power equipment. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model provides a high-temperature-resistant composite material gasket to solve the problem that the traditional gasket is not resistant to high temperature and the sealing gasket on the gasket is easy to have a joint between the external abutting tooling or the sealing gasket deforms and loosens under high-temperature working conditions.

[0004] To achieve the above purpose, the utility model provides a high-temperature-resistant composite material gasket, which comprises a gasket, the top and bottom of the gasket are provided with sealing grooves, sealing gaskets are arranged in the sealing grooves, the two sealing gaskets are coaxial and oppositely arranged, and self-adapting pieces for self-adapting adjustment to apply force to the sealing gaskets when the working environment temperature of the gasket changes are arranged in the sealing grooves.

[0005] The sealing gasket in the sealing groove cooperates with the self-adapting part that can be self-adaptively adjusted, and the self-adapting part always applies stable force to the sealing gasket under high-temperature working conditions, effectively prevents the joint between the sealing gasket and the external abutting tool, avoids the deformation and loosening of the sealing gasket due to high temperature, improves the sealing performance of the gasket, effectively prevents medium leakage, greatly improves the safety and reliability of equipment operation, reduces equipment failure and maintenance cost caused by sealing problems; meanwhile, the gasket can maintain good structural stability and sealing performance in a high-temperature environment, greatly reduces frequent damage and replacement caused by high temperature, and the service life of the gasket is greatly prolonged compared with a traditional gasket, which not only reduces the maintenance cost of the equipment, but also improves the production efficiency and reduces the production stagnation time caused by equipment downtime and gasket replacement, thereby creating greater economic benefits for enterprises.

[0006] The self-adapting part comprises a plurality of loading strips, the plurality of loading strips are arranged in two sealing grooves, the loading strip is composed of two end portions and a raised portion, the raised portion is arranged towards the opening of the sealing groove, the sealing gasket is provided with a containing groove corresponding to each raised portion for containing the raised portion, the bottom wall of the sealing groove is provided with a connecting groove corresponding to the two end portions of each loading strip for connecting and cooperating with the corresponding end portion, the loading strip is made of a shape memory alloy material, the loading strip has a first shape under a first temperature range, the loading strip has a second shape under a second temperature range, the raised portion of the loading strip is in contact with the inner wall of the containing groove under the first shape, and the raised portion of the loading strip is deformed and bent and rises towards the containing groove under the second shape to apply the force generated by deformation to the inner wall of the containing groove.

[0007] The technical scheme has the beneficial effects that: in the above-mentioned technology, the loading strip made of shape memory alloy material is used as an adaptive piece, which can accurately respond to temperature changes, when the temperature is in the first temperature range, the bulging part of the loading strip normally contacts the inner wall of the sealing pad container groove, maintaining the basic sealing state of the gasket, when the temperature enters the second temperature range, the loading strip rapidly deforms, the bulging part bends and rises towards the container groove, this automatic adjustment based on the characteristics of shape memory alloy can ensure that the gasket always maintains stable structural strength in a high-temperature environment with temperature fluctuations, effectively dealing with the problems of material softening and deformation of the sealing pad on the traditional gasket due to temperature rise, greatly improving the adaptability and resistance of the gasket to high-temperature working conditions; at the same time, the unique structure design of the loading strip and the container groove of the sealing pad are closely matched and play a key role in high-temperature working conditions, as the temperature rises, the bulging part of the loading strip deforms and bends and applies force to the inner wall of the container groove, in this process, the sealing pad is tightly pressed against the external abutting tool, since the loading strips are uniformly distributed in the sealing groove, they can provide stable and continuous pressure to the sealing pad in all directions, effectively preventing the occurrence of joints between the sealing pad and the external abutting tool, preventing the generation of sealing gaps due to thermal expansion and contraction, at the same time, the strong pressure makes it difficult for the sealing pad to deform and loosen at high temperatures, significantly enhancing the sealing stability of the gasket, greatly reducing the risk of medium leakage, and effectively ensuring the safety and reliability of equipment operation; in the above-mentioned technology, the shape memory alloy is a prior art, the phase transition temperature range of the traditional shape memory alloy is more than thirty degrees, that is, when the operating temperature range of the equipment tool reaches more than thirty degrees, the shape memory alloy is in the second temperature range and deforms, when the equipment stops operating or is not operating, the temperature working condition of the equipment is below thirty degrees, at this time, the shape memory alloy is in the first temperature range and resets, since the shape memory alloy is a prior art, its structure and phase transition principle will not be described in detail, in the above-mentioned technology, different types of shape memory alloys can be selected according to actual working conditions and requirements, that is, shape memory alloys with different phase transition temperatures are selected.

[0008] The utility model further sets up: a plurality of loading strips are annularly distributed and a plurality of loading strip combinations are annularly arranged, adjacent loading strips are gap-fitted, and a plurality of bulging parts of the loading strips are combined and arranged in a wavy shape.

[0009] The technical scheme has the beneficial effects that: in the above technical scheme, the loading strips are distributed in a ring shape and combined into a ring shape, which is matched with the circular structure of the gasket, and can provide uniform and comprehensive pressure to the sealing gasket in the whole circumferential direction; the wavy setting of the raised portions of the loading strips makes the sealing gasket more closely and closely contact with the external abutting tool when subjected to pressure, further eliminates possible sealing dead angles, effectively prevents medium leakage from the edge of the gasket, greatly improves the sealing performance, and ensures that the sealing performance of the equipment under high-temperature working conditions reaches a higher standard; meanwhile, the gap between adjacent loading strips is arranged in cooperation, which can effectively disperse stress when the gasket is subjected to high temperature and external pressure; when the temperature changes cause the loading strips to deform and generate force, the gap between the loading strips allows them to independently displace and adjust to a certain extent, avoiding the occurrence of stress concentration; the wavy raised portions and the ring-shaped distribution of the loading strips in the above technical scheme can better adapt to the pressure change and temperature gradient under different working conditions, and even if there is a difference in temperature and pressure between different parts of the gasket in a high-temperature environment, the loading strips can flexibly adjust the pressure distribution on the sealing gasket through their own deformation and cooperation with each other, ensuring reliable sealing in various complex environments, and further widening the application range of the gasket in different high-temperature industrial scenes.

[0010] The utility model further sets up: the middle bottom wall of the sealing gasket in the bottom part of gasket is provided with a plurality of sealing protrusions, a plurality of sealing protrusions are combined and arranged in a ring shape.

[0011] The technical scheme has the beneficial effects that: in the above technical scheme, the sealing protrusions in the middle bottom wall of the sealing gasket in the bottom part of gasket are arranged in a ring shape, which can significantly enhance the sealing effect of the bottom part of the gasket, and under high-temperature working conditions, the sealing protrusions can fill the small gap that may exist between the gasket and the bottom abutting tool, further prevent medium leakage, compared with ordinary flat sealing gaskets, the existence of the sealing protrusions increases the tortuosity of the sealing path, making it more difficult for the medium to penetrate the sealing area, thereby greatly improving the overall sealing performance and providing more reliable protection for the stable operation of the equipment in a high-temperature environment, and the ring-shaped arrangement of the sealing protrusions increases the effective contact area of the sealing gasket and the bottom abutting tool, which can more evenly distribute the pressure on the contact surface when subjected to pressure, improving the load-carrying capacity of the sealing gasket.

[0012] The utility model further sets up: adjacent sealing protrusions are connected in smooth arc surface and form arc surface, a plurality of sealing protrusions are combined and arranged in a wavy shape.

[0013] The technical scheme has the beneficial effects that: in the above technical scheme, the adjacent sealing protrusions are connected by smooth arc surfaces to form arc surfaces, and the whole is arranged in a wave shape, which greatly improves the sealing integrity of the sealing gasket; in a high-temperature environment, the smooth arc surfaces can effectively avoid the risk of medium leakage caused by sharp edges or gaps between the sealing protrusions; when the gasket interacts with the bottom abutting tool, the wave-shaped sealing protrusions can closely fit according to the slight changes in the surface of the tool, and can block possible leakage channels in all directions, further lengthening the leakage path of the medium, and compared with the common linear or separate sealing protrusion arrangement, the overall sealing performance can be more significantly improved, which provides a solid guarantee for the safe operation of the equipment in a high-temperature working condition.

[0014] The utility model further sets up: the gasket is made of rubber material, the sealing protrusion is made of elastic material.

[0015] The technical scheme has the beneficial effects that: in the above technical scheme, the gasket is made of rubber material, which has good flexibility and elastic recovery capacity, and in a high-temperature working condition, the rubber gasket can effectively adapt to the thermal expansion and contraction of the equipment, and always maintain close fitting with the tool, preventing medium leakage caused by gaps due to temperature changes; the sealing protrusion is made of elastic material, which further enhances the fineness of the sealing, and the elastic sealing protrusion can elastically deform when under pressure, tightly filling the small gap between the gasket and the tool, ensuring the tightness of the sealing even in a high-temperature environment, and greatly improving the overall sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional view of the top of the utility model;

[0017] Figure 2 It is a three-dimensional view of the bottom of the utility model;

[0018] Figure 3 It is a three-dimensional view of the several loading strips in the utility model;

[0019] Figure 4 It is a sectional view of the utility model. DETAILED DESCRIPTION

[0020] The utility model provides a kind of high-temperature-resistant composite material gasket 1, including gasket 1, the gasket 1 top and bottom are all set with sealing groove 11, sealing pad 2 is arranged in the sealing groove 11, two the sealing pad 2 coaxially and oppositely arranged, self-adapting piece for self-adapting adjustment to apply force to sealing pad 2 when the working environment temperature of gasket 1 changes is arranged in the sealing groove 11, the self-adapting piece includes several loading strips 3, several the loading strip 3 is divided and arranged in two sealing grooves 11, the loading strip 3 is made of two end portions 31 and hump portion 32, the hump portion 32 is set towards sealing groove 11 opening, the sealing pad 2 is set with the accommodating groove 21 for accommodating hump portion 32 for each hump portion 32, the bottom wall of the sealing groove 11 is set with the connecting groove 111 for connecting with corresponding end portion 31 matched for each loading strip 3 two end portions 31, the loading strip 3 is made of shape memory alloy material, the loading strip 3 has first form under first temperature range, the loading strip 3 has second form under second temperature range, the hump portion 32 of the loading strip 3 is in contact with the inner wall of accommodating groove 21 and is set under first form, the hump portion 32 of the loading strip 3 is deformed and is bent and rises to the direction of accommodating groove 21 to apply the force generated by deformation to the inner wall of accommodating groove 21 under second form, several the loading strip 3 is annularly distributed and several loading strips 3 combination is annularly set, adjacent the loading strip 3 gap cooperation is set, several the loading strip 3 hump portion 32 combination is wavyly set, the middle bottom wall of the sealing pad 2 in the gasket 1 bottom is provided with several sealing protrusions 22, several the sealing protrusions 22 combination is annularly arranged and set, adjacent the sealing protrusions 22 between smooth arc surface connection and form arc face 23, several the sealing protrusions 22 combination is wavyly set, the gasket 1 is made of rubber material, the sealing protrusion 22 is made of elastic material.

[0021] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model, and those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-temperature resistant composite material gasket, characterized in that: The gasket comprises a top and a bottom, each of which is provided with a sealing groove, and each of the sealing grooves is provided with a sealing pad, the two sealing pads are coaxial and oppositely arranged, and the sealing groove is provided with an adaptive part for self-adapting adjustment to apply force to the sealing pad when the working environment temperature of the gasket changes.

2. The high temperature resistant composite material gasket according to claim 1, characterized in that: The adaptive part comprises a plurality of loading strips, the plurality of loading strips are arranged in the two sealing grooves, each of the loading strips is composed of two end portions and a bulge portion, the bulge portion is arranged towards the opening of the sealing groove, the sealing pad is provided with a corresponding groove for accommodating the bulge portion, the bottom wall of the sealing groove is provided with a connecting groove for connecting and matching the corresponding end portion, the loading strip is made of a shape memory alloy material, the loading strip has a first shape at a first temperature range, and the loading strip has a second shape at a second temperature range, the bulge portion of the loading strip is in contact with the inner wall of the groove in the first shape, and the bulge portion of the loading strip is deformed and bent towards the groove in the second shape to apply a force generated by deformation to the inner wall of the groove.

3. The high temperature resistant composite material gasket according to claim 2, characterized in that: The plurality of loading strips are distributed in a ring shape, and the plurality of loading strips are combined in a ring shape, the adjacent loading strips are arranged in a gap matching mode, and the plurality of loading strips are combined in a wave shape.

4. The high temperature resistant composite material gasket according to claim 1, characterized in that: The bottom wall of the sealing pad in the bottom of the gasket is provided with a plurality of sealing protrusions, and the plurality of sealing protrusions are combined and arranged in a ring shape.

5. The high temperature resistant composite material gasket according to claim 4, characterized in that: The adjacent sealing protrusions are connected in a smooth arc surface and form an arc surface, and the plurality of sealing protrusions are combined in a wave shape.

6. The high temperature resistant composite material gasket according to claim 5, characterized in that: The gasket is made of rubber material, and the sealing protrusions are made of elastic material.

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