KR102081591B1 - Gasket - Google Patents

Abstract

The present invention relates to a gasket, which is provided in an annular shape in detail, and has a first recess and a second recess on its upper surface, a third recess and a fourth recess on its lower surface, and further includes an outer ring portion on the outside. Relates to a gasket. According to the present invention, the airtightness is ensured in the tube due to the restoring force of the recesses, and the compressive force is increased due to the arc-shaped or serrated end portions formed in the second recesses and the fourth recesses, thereby ensuring airtightness even at high pressure. In addition, the resilience is excellent, and the graphite coating increases the wear resistance of the gasket to increase the life of the gasket can be used for a long time.

Description

Gasket {GASKET}

The present invention relates to a gasket. More particularly, the present invention relates to a gasket which is positioned between the flange and the flange to maintain the airtightness in the pipe, but improves the airtightness by implementing a cross-sectional shape.

Gasket means a static seal positioned between the pipe and the pipe or the flange and the flange to prevent the fluid flowing inside the pipe from escaping to the outside. Gaskets are evolving in various materials and forms in consideration of the use of fluids in various conditions and forms with industrial developments today. In addition, the gasket to maintain the airtightness between the flange and the flange is not easy to maintain, repair and maintenance because the flange and the gasket must be separated for post-installation management. Therefore, the gasket must satisfy both the airtightness that the fluid in the tube does not leak out and the longevity that the gasket can function in various conditions and environments. For example, in the case of a pipe flowing between high and low temperature or low and high pressure fluids, various shapes and properties may change such that the pipe expands or contracts depending on the state of the fluid. Confidentiality must be maintained, and furthermore, yield point and resilience must be high. In addition, since the gasket is not integrally formed with the flange, the guide means are required so that the gasket is positioned at the correct position of the flange during installation.

Republic of Korea Utility Model Registration No. 20-0410284 (registered on Feb. 27, 2006)

The technical problem of the present invention is to solve the above problems.

In detail, the present invention provides a gasket having a high yield point and excellent restoring force even in shrinkage, expansion or deformation even under various conditions and environments.

In addition, another technical problem of the present invention is to provide a gasket which is disposed at an accurate position and which is more airtight and tightly sealed.

In order to achieve the above object, the present invention is provided in an annular shape, the first concave portion formed to the first predetermined height and the second concave portion formed to the second predetermined height along the circumferential direction on the upper surface is formed in the intersection, A third concave portion formed at a first predetermined height and a fourth concave portion formed at a second predetermined height are formed to cross each other in the circumferential direction, so that the cross section has a point symmetrical shape, and the second concave portion and the fourth concave portion are formed in an arc shape. It may have a curvature or a plurality of bends, and provides a gasket including an outer ring formed on the outside.

According to the present invention, airtightness is ensured in the pipe through the first and second recesses formed to cross each other.

In addition, excellent sealing performance is exhibited by the high restoring force due to the first and third recesses formed at the first predetermined height and the second and fourth recesses formed at the second predetermined height.

In addition, the first recess formed on the upper surface and the lower surface and the fourth recess formed at the second predetermined height and the third recess formed at the first predetermined height and the second predetermined height formed at the first predetermined height The two recesses are formed to cross each other, and have high compressibility and elasticity.

In addition, the second concave portion and the fourth concave portion are provided with a sawtooth-shaped end portion which has a sealing function, so that it can be sealed more effectively.

In addition, the outer gasket is provided on the outside of the gasket to facilitate coupling so that the gasket is positioned at the correct position.

In addition, the surface of the gasket is graphite coated to provide a gasket that can be used for a long time under various conditions and environments.

As a result, airtightness is maintained even with various form and property changes, and a long-term use can provide a gasket having increased efficiency.

Finally, there is an effect that can increase the yield for the gasket of the present invention.

1 is a cross-sectional view showing that the gasket is installed in the tube according to an embodiment of the present invention.
2 is a view showing a cut part of the perspective view showing a gasket according to an embodiment of the present invention.
3 is a cross-sectional view showing a gasket according to the first embodiment of the present invention.
4 is a sectional view showing a gasket according to the second embodiment of the present invention.
5 is a sectional view showing a gasket according to the third embodiment of the present invention.
6 is a sectional view showing a gasket according to the fourth embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Also, in order to clearly describe the present invention, parts not related to the present invention are omitted, and the same or similar reference numerals in the drawings indicate the same or similar elements.

The objects and effects of the present invention may be naturally understood or more apparent from the following description, and the objects and effects of the present invention are not limited only by the following description.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the gasket according to the present invention is located between the flange (2) and the flange (2 ') to function to maintain the airtight in the tube (1), the flange (2) or tube ( Depending on the form of 1) may be provided in various shapes such as circle, ellipse, square or hexagon. In the present invention, a circular gasket will be described as an example. In addition, the gasket to be described later may be provided with a variety of materials such as rubber, silicon, metal, it is preferable that the gasket is provided with a material capable of maintaining excellent compression and restoring force under conditions such as high pressure and high temperature. According to one embodiment, it may be made of a material, such as stainless (Steinless) or Inconel (Inconel). In detail, it may be made of a material such as stainless steel 347 or Inconel 825. In addition, the surface of the gasket may be a graphite coating.

In the figure, IN is the inner direction of the gasket, and OUT is the outer direction when the cross section of the gasket is viewed.

The gasket of the present invention may have a first concave portion 110 and a second concave portion 120 on an upper surface thereof, and a third concave portion 210 and a fourth concave portion 220 on a lower surface thereof. .

Hereinafter, the gasket of the present invention will be described in detail with reference to FIGS. 3 to 6.

3 is a sectional view of a gasket according to the first embodiment of the present invention.

The gasket 100 according to the first embodiment of the present invention is provided in an annular shape, when looking at the cross section, the first concave portion 110 and the second concave portion 120 on the upper surface based on the center line (M). It may be formed with a third recessed portion 210 and the fourth recessed portion 220 on the lower surface.

Since the gasket 100 is positioned between the flange 2 and the flange 2 'to maintain airtightness, the gasket 100 may be provided in a size and shape corresponding to the flanges 2 and 2'. In detail, the gasket 100 may be provided in an annular shape. In more detail, the gasket 100 may be provided in a shape such as a circular wheel, a ring, or a rim.

The gasket 100 is provided in an annular shape, the first concave portion 110 and the second concave portion 120 on the upper surface of the cross section, the third concave portion 210 and the fourth concave portion 220 on the lower surface It may be a shape provided to cross each other. Specifically, the gasket 100 has a first concave portion 110 that forms an arc of a first predetermined height T1 and a second concave portion 120 that forms an arc of a second predetermined height T2 on an upper surface thereof in a circumferential direction. The third concave portion 210 forming an arc of the first predetermined height T1 and the fourth concave portion 220 forming an arc of the second predetermined height T2 may be formed along the circumferential direction. Can be formed accordingly. More specifically, the first predetermined height T1 is greater than the second predetermined height T2, and the first concave portion 110 formed on the upper surface and the fourth concave portion 220 formed on the lower surface correspond to each other. The second concave portion 120 and the third concave portion 210 formed on the lower surface are formed at positions corresponding to each other. More specifically, the midpoint of the arc of the first recess 110 formed on the upper surface of the gasket 100 and the midpoint of the arc of the fourth recess 220 formed on the lower surface and the center of the arc of the second recess 120 are formed. The midpoint of the arc of the three recesses 210 may be formed at a position perpendicular to the center line M. FIG.

The arcs of the first concave portion 110, the second concave portion 120, the third concave portion 210, and the fourth concave portion 220 may be arcs of a circle or arcs of an ellipse. . In addition, the second concave portion 120 and the fourth concave portion 220 may have a flat shape in which the second predetermined height T2 is zero.

Thus, the gasket 100 is connected to the flanges 2, 2 ′ through respective first recesses 110, second recesses 120, third recesses 210 and fourth recesses 220. Concentrates the load for better air tightness. In addition, the first concave portion 110 and the fourth concave portion 220 correspond to the upper and lower surfaces, respectively, and the second concave portion 120 and the third concave portion 210 are formed to correspond to the upper and lower surfaces, respectively, so that the flange 2 2 '), each of the recesses 110, 120, 210, and 220 crushed by up and down compression is excellent in sealing performance with high restoring force to maintain the original state with each other. In addition, the pressing force may be increased on the flanges 2 and 2 'by the arc shape of the second predetermined height T2 of the second recess 120 and the fourth recess 220. Therefore, it is possible to prevent the gasket 110 from moving or deforming out of the flanges 2 and 2 'by the pressure of the fluid flowing in the flanges 2 and 2' or the tube 1. In detail, since the first concave portion 110 and the second concave portion 120 are formed on the upper surface, and the third concave portion 210 and the fourth concave portion 220 are formed on the lower surface by crossing each other up and down, the outer and the outer concave portions are formed. When the fluid in the tube 1 having a relatively high pressure exits, the airtightness in the tube 1 is excellent due to the restoring force and the compressive force of the recesses 110, 120, 210, and 220, and the recesses 110, 120, Since the 210 and 220 are not moved or deformed due to the fluid, the life of the gasket 100 may be extended.

4 is a cross-sectional view of a gasket according to the second embodiment of the present invention.

The gasket 100 according to the second embodiment of the present invention may further include an outer ring portion 300 on the outer circumferential surface of the gasket 100 of the first embodiment. The outer ring part 300 is formed along the outer circumferential surface of the gasket 100 and may be provided in an annular shape. In detail, the outer ring part 300 is formed to protrude along the outer circumferential surface of the gasket 100 and may be provided in the shape of a wheel, a ring, or a rim. The outer ring part 300 serves to guide the gasket 100 positioned between the flange 2 and the flange 2 'to be positioned at the correct position. In detail, the flange 2 and the flange 2 'may be fastened to each other with bolts and nuts arranged along the circumferential direction of the flanges 2 and 2'. Here, the gasket at the correct position between the flange 2 and the flange 2 'by bringing the outer surface of the outer ring portion 300 into contact with each other on the inner surface of the bolt passing through the flange 2 and the flange 2'. 100 may be positioned. The outer ring portion 300 may be formed so that the cross section of the upper surface and the lower surface has a sawtooth shape, in the present invention will be described as an example that the upper surface and the lower surface is made of a plane. As another example, the outer ring part 300 may be implemented such that the gasket 100 is guided to the correct position of the flanges 2 and 2 'by forming a groove through which the bolt can penetrate and allowing the bolt to penetrate the groove. As another example, the outer ring portion 300 is formed by forming a flange (2, 2 ') by placing an outer surface of a bolt through which the flange (2, 2') is formed on a side of a semi-circle or arc shape and formed on a side of the semi-circle or arc shape. ) May be implemented to guide the gasket 100 to the correct position. Therefore, the outer gasket 100 may allow the gasket 100 to be fixed at the correct position without departing from the sealing position.

5 is a sectional view of a gasket according to the third embodiment of the present invention.

Gasket 100 according to the third embodiment of the present invention is provided in an annular shape, when looking at the cross section, the first concave portion 110 and the second concave portion 120 on the upper surface based on the center line (M) The third recess 210 and the fourth recess 220 are provided on the lower surface, and the sawtooth-shaped end portions 121 and 221 are formed in the second recess 120 and the fourth recess 220. It may be formed to include more.

The end portions 121 and 221 may be formed along the circumferential surface of the gasket 100 in each of the second concave portion 120 and the fourth concave portion 220 disposed on the upper and lower surfaces thereof, and may be provided in an annular shape. In detail, the end portions 121 and 221 may be formed to have a plurality of teeth in one second recess portion 120 and the fourth recess portion 220, and a plurality of second recess portions 120 and It may be formed in the entire fourth recess 220, or may be formed only in some of the second recess 120 and the fourth recess 220. In more detail, the end portions 121 and 221 may be provided in a plurality of tooth shapes, and the sealing force and airtightness of the gasket 100 may be increased by a sealing function for each peak portion of each tooth. In addition, the adhesion force and the friction force between the flanges 2 and 2 'are increased by the ends 121 and 221, so that the gasket 100 can be fixed in the correct position without being pushed even if a high pressure fluid flows in the pipe 1. have.

6 is a sectional view of a gasket according to the fourth embodiment of the present invention.

The gasket 100 according to the fourth embodiment of the present invention may further include an outer ring portion 300 on the outer circumferential surface of the gasket 100 of the third embodiment. The outer ring part 300 may be formed along an outer circumferential surface of the gasket 100 and may be provided in an annular shape. In detail, the outer ring part 300 is formed to protrude along the outer circumferential surface of the gasket 100 and may be provided in the shape of a wheel, a ring, or a rim. The outer ring part 300 serves to guide the gasket 100 positioned between the flange 2 and the flange 2 'to be positioned at the correct position. In detail, the flange 2 and the flange 2 'may be fastened to each other with bolts and nuts arranged along the circumferential direction of the flanges 2 and 2'. Here, the gasket at the correct position between the flange 2 and the flange 2 'by bringing the outer surface of the outer ring portion 300 into contact with each other on the inner surface of the bolt passing through the flange 2 and the flange 2'. 100 may be positioned. As another example, the outer ring part 300 may be implemented such that the gasket 100 is guided to the correct position of the flanges 2 and 2 'by forming a groove through which the bolt can penetrate and allowing the bolt to penetrate the groove. As another example, the outer ring portion 300 is formed by forming a flange (2, 2 ') by placing an outer surface of a bolt through which the flange (2, 2') is formed on a side of a semi-circle or arc shape and formed on a side of the semi-circle or arc shape. ) May be implemented to guide the gasket 100 to the correct position. Therefore, the outer gasket 100 may allow the gasket 100 to be fixed at the correct position without departing from the sealing position.

The gasket 100 according to each embodiment of the present invention described above may be formed by graphite coated on the surface. Graphite is a carbon fiber carbon is burned once more at a high temperature, it is possible to prevent the rust caused by the fluid flowing inside the tube (1) through the graphite coating to corrode or discolor. In detail, by coating the gasket 100 with graphite, the gasket 100 can be prevented from being damaged or deformed, and a gasket 100 having excellent wear resistance can be manufactured. Therefore, the gasket 100 which can be used for a long time can be provided.

Since the embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be able to make various modifications, changes and additions within the spirit and scope of the present invention. It should be regarded as belonging to the above claims.

Those skilled in the art to which the present invention pertains, various changes, modifications and changes are possible within the scope without departing from the spirit of the present invention, the present invention in the above embodiments and the accompanying drawings It is not limited by.

1: pipe 2, 2 ': flange
100: gasket 110: first recessed portion
120: second recess 121: second end
210: third recessed portion 220: fourth recessed portion
221: fourth end M: centerline

Claims (4)

It is provided in an annular shape,
A plurality of first recesses formed on an upper surface in an arc shape having a first predetermined height in a circumferential direction; And
And a plurality of third recesses formed in an arc shape of the first predetermined height in a lower surface thereof in a circumferential direction.
The plurality of first recesses and the plurality of third recesses are formed at positions crossing each other sequentially,
A second concave portion formed on an upper surface in an arc shape having a second predetermined height in a circumferential direction, the second concave portion being provided between the plurality of first concave portions; And
A fourth recess formed in an arc shape of the second predetermined height in a circumferential direction on a lower surface thereof, and provided in plural and formed between each of the plurality of third recesses;
And said second height is less than said first height.
delete The method of claim 1,
And the second recess or the fourth recess is formed in a sawtooth shape.
The method according to claim 1 or 3,
Gasket characterized in that the outer peripheral surface is formed in an annular shape is further provided.

Images