阅读说明：本技术 垫圈 (Gasket ring ) 是由 李钟彻 于 2017-09-07 设计创作，主要内容包括：本发明涉及一种垫圈(gasket),更具体而言,涉及具有在金属齿形垫片(kammprofile)的至少一侧包括C形环(c ring)端部的形式的垫圈。根据本发明,垫圈可以确保比具有相同尺寸的其他垫圈更高的锚固力和恢复力。并且,通过形成在金属齿形垫片的一侧的C形环端部可以简单地固定附接芯弹簧而无需外部护套。因此,可以提供通过上述简单的结构能够降低生产成本的垫圈。(The present invention relates to a washer (gasket), and more particularly, to a washer having a form including a C-ring (C ring) end on at least one side of a metal tooth shaped gasket (kammprofile). According to the present invention, the gasket can ensure higher anchoring force and restoring force than other gaskets having the same size. Also, the core spring can be simply fixedly attached without an outer sheath by the C-shaped ring end formed at one side of the metal tooth washer. Therefore, it is possible to provide a gasket capable of reducing the production cost by the above-described simple structure.)

1. A gasket interposed between flanges as a connecting portion between a pipe and a pipe, the gasket characterized by comprising:

a metal tooth-shaped gasket having saw teeth formed on the upper and lower surfaces thereof;

a C-shaped ring end portion formed on an inner side of the metal tooth-shaped gasket so as to be integrated with the metal tooth-shaped gasket;

an outer ring end portion formed outside the metal tooth-shaped gasket so as to be integrated with the metal tooth-shaped gasket; and

and a core spring accommodated in the end of the C-shaped ring.

2. A gasket interposed between flanges as a connecting portion between a pipe and a pipe, the gasket characterized by comprising:

a metal tooth-shaped gasket having saw teeth formed on the upper and lower surfaces thereof;

a first C-ring end portion formed on an inner side of the metal tooth-shaped gasket so as to be integrated with the metal tooth-shaped gasket;

a first core spring accommodated in an end portion of the first C-shaped ring;

a second C-ring end portion formed outside the metal tooth-shaped gasket so as to be integrated with the metal tooth-shaped gasket; and

and a second core spring accommodated in the second C-shaped ring end.

3. A washer according to claim 1 or 2, characterized in that said serrations are formed by serration.

4. The gasket of claim 1 further comprising an aperture, said aperture surrounding said C-ring end.

5. The gasket as set forth in claim 2 further comprising:

a first hole surrounding the end of the first C-shaped ring; and

and a second hole surrounding the end of the second C-shaped ring.

6. The gasket of claim 2 further comprising an outer ring mounted outside the opening in the end of said second C-ring.

7. A washer according to claim 1 or 2, characterized in that said core spring is a coil spring.

Technical Field

The present invention relates to a washer (gasket), and more particularly, to a washer having a form including a C-ring (C ring) end on at least one side of a metal tooth shaped gasket (kammprofile).

Background

Gaskets are collectively referred to as static seals (seals) that are coupled by bolts (bolts) or the like to a fixed joint surface such as a pressure vessel, a pipe flange (flange), a joint surface of a mechanical mechanism, or the like, to prevent leakage. Gaskets of various shapes and materials are used according to the use state such as the type of the working fluid, pressure, temperature, and the like.

Originally, the gasket was made of paper, leather, or the like and was simply used, but in recent years, as the use conditions become complicated and severe, there is a tendency to use gaskets of various shapes and materials.

That is, a gasket is interposed between two connected tubular bodies for preventing fluid from leaking through a gap between the tubular bodies. For example, a gasket is interposed between a connection portion, i.e., a flange, of a tubular body, such as a valve or a pipe, which transports a fluid, to prevent the fluid from leaking, and has a sealing function to prevent external foreign substances from flowing into the tubular body. That is, when flanges of a valve or a pipe or the like are coupled, the volume of the gasket is compressed due to a pressure applied in an axial direction, thereby isolating a joint between the flanges as a connection portion from the outside.

Such gaskets actually installed and used in factories (plants) need to maintain a sealed state against various environments and conditions.

For example, the size and position of the flange mounted to the gasket, the bolting (bolting) process for coupling, and the like should be considered, and particularly, when a high-temperature, high-pressure fluid repeatedly flows inside the tubular body under the plant operating conditions in which heating and cooling are continuously performed, the flatness of the flange 2, which is the connection portion of the tubular body 1, is difficult to be completely maintained, and thus, as shown in fig. 1, the gap deviation between the flanges 2 is increased (D2> D1).

That is, the gasket mounted to the flange should overcome such deviation and maintain a sealed state, and for this reason, a yield point should be high and a restoring force should also be high in a sealing direction of the gasket.

(Prior art document)

(patent document)

Korean granted patent No. 10-1656598 (granted day: 2016.09.05)

Disclosure of Invention

Technical problem

The present invention has been made to solve the above problems, and an object of the present invention is to provide a gasket having a simple structure and a high restoring force due to a C-shaped ring end formed at one side of a metal tooth-shaped gasket having serrations on upper and lower surfaces.

And, it is another object of the present invention to provide a gasket that includes an eyelet (eyelet) surrounding the end of the C-ring to reduce turbulence caused by fluid flowing through the pipe.

And, another object of the present invention is to provide a gasket provided with an outer ring (outer ring) at the other side of a metal tooth-shaped gasket to be more precisely mounted on a flange.

And, another object of the present invention is to provide a gasket provided with a stopper (stopper) at least a portion of a saw-tooth member of a metal tooth gasket to maintain an optimum sealing state.

Means for solving the problems

In order to achieve the above object, a gasket according to the present invention is a gasket interposed between flanges as a connection portion between a pipe and a tube, the gasket including: a metal tooth-shaped gasket; a C-shaped ring end part formed on the inner side of the metal tooth-shaped gasket; and an outer ring (outer ring) end portion formed on the outer side of the metal tooth-shaped gasket.

Serrations may be formed on upper and lower surfaces of the metal tooth gasket.

The gasket may further include a core spring accommodated in the end portion of the C-shaped ring through an opening of the end portion of the C-shaped ring, and the opening of the end portion of the C-shaped ring may be welded (welding).

Stoppers may be formed on at least a portion of the upper and lower surfaces of the metal tooth-shaped gasket.

The washer may further include a core spring accommodated inside the end portion of the C-shaped ring through an opening portion of the end portion of the C-shaped ring.

The gasket may further include an aperture surrounding the end of the C-ring.

The opening of the end of the C-ring may be welded.

On the other hand, the metal tooth gasket may include a central portion that is more convex in the up-down direction than both end portions.

The washer may further include a core spring accommodated inside the end portion of the C-shaped ring through an opening portion of the end portion of the C-shaped ring.

The gasket may further include an aperture surrounding the end of the C-ring.

The opening of the end of the C-ring may be welded.

On the other hand, a gasket according to the present invention is a gasket interposed between flanges as a connection portion between a pipe and a pipe, the gasket including: a metal tooth-shaped gasket including a central portion that is more convex in the up-down direction than both end portions; and a C-shaped ring end part formed on the inner side of the metal tooth-shaped gasket.

The washer may further include a core spring accommodated inside the end portion of the C-shaped ring through an opening portion of the end portion of the C-shaped ring.

The gasket may further include an aperture surrounding the end of the C-ring.

Further, a gasket according to the present invention is a gasket interposed between flanges as a connecting portion between a pipe and a pipe, the gasket including: a metal tooth-shaped gasket; a first C-shaped ring end part formed on the inner side of the metal tooth-shaped gasket; and a second C-shaped ring end formed on the outer side of the metal tooth-shaped gasket, wherein the saw teeth are formed on the upper surface and the lower surface of the metal tooth-shaped gasket.

The above gasket may further include: a first core spring accommodated in an end portion of the first C-shaped ring; and a second core spring accommodated in an end portion of the second C-ring, wherein the openings of the end portions of the first and second C-rings may be welded.

The above gasket may further include: a first core spring accommodated in an end portion of the first C-shaped ring; and a second core spring accommodated in an end portion of the second C-shaped ring, wherein the metal tooth gasket may include a central portion protruding more in an up-down direction than both end portions.

The above gasket may further include: a first hole surrounding the end of the first C-shaped ring; and a second hole surrounding an end of the second C-shaped ring.

The gasket may further include an outer ring attached to an outer side of the opening portion of the end portion of the second C-ring.

The above gasket may further include: a first core spring accommodated in an end portion of the first C-shaped ring; and a second core spring accommodated inside an end portion of the second C-ring, wherein stoppers may be formed on at least a portion of upper and lower surfaces of the metal tooth-shaped gasket.

The above gasket may further include: a first hole surrounding the end of the first C-shaped ring; and a second hole surrounding an end of the second C-shaped ring.

The gasket may further include an outer ring attached to an outer side of the opening portion of the end portion of the second C-ring.

On the other hand, a gasket according to the present invention is a gasket interposed between flanges as a connection portion between a pipe and a pipe, the gasket including: a metal member having an upper surface and a lower surface which are flat in a horizontal direction; and a C-shaped ring end part formed on the inner side of the metal member.

The washer may further include a coil spring received inside an end portion of the C-shaped ring. The opening of the end of the C-ring may be welded.

Further, a gasket according to the present invention is a gasket interposed between flanges that are connection portions between pipes, the gasket including: a metal member having an upper surface and a lower surface which are flat in a horizontal direction; a first C-shaped ring end part formed on the inner side of the metal member; and a second C-shaped ring end part formed on the outer side of the metal member.

The above gasket may further include: a first core spring accommodated in an end portion of the first C-shaped ring; and a second core spring accommodated in the end of the second C-shaped ring. The openings of the first C-ring end and the second C-ring end may be welded.

ADVANTAGEOUS EFFECTS OF INVENTION

The gasket according to the preferred embodiment of the present invention has the following effects.

First, the washer may ensure a higher anchoring force and restoring force than other washers having the same size. Therefore, the sealability of the gasket is improved even at high temperature and high pressure.

Second, the core spring can be simply fixedly attached without an outer sheath by forming the end of the C-ring at one side of the metal tooth washer. Therefore, it is possible to provide a gasket capable of reducing the production cost by the above-described simple structure. Further, the restoring force of the gasket can be increased.

Third, by the serration members formed on the upper and lower surfaces of the metal tooth gasket, it is possible to concentrate the load of the coupling bolt at the peak portions of the serration members even under low compression force. Thus, complete sealing may be provided.

Fourth, since the C-ring ends are formed at both sides of the metal tooth gasket, the restoring force and the sealing property of the gasket can be further improved.

Fifth, the gasket includes an aperture surrounding the end of the C-ring of the metal castellated shim, thereby blocking the inner part of the gasket from direct contact with the fluid flowing through the pipe to reduce turbulence caused by the fluid.

Sixth, a flat coil spring is used as a core spring, so that not only a restoring force is secured, but also a pressure is uniformly dispersed, so that the life of the gasket can be extended.

Seventh, since the gasket includes the metal tooth-shaped gasket having the central portion that is more protruded in the up-down direction than both end portions, a sealing layer covering the gasket may be more firmly inserted between the serrations and the serrations of the serration member of the metal tooth-shaped gasket at the central portion where the gasket mounting surface pressure is highest, so that the sealing effect can be increased.

Eighth, the sealing layer of the gasket and the saw-tooth member are prevented from being excessively compressed by providing a stopper at least a portion of the saw-tooth member of the metal tooth gasket, so that an optimum sealing state can be maintained.

Drawings

Fig. 1 is a view showing a state in which a gap between flanges to which a gasket is applied is biased to increase.

Fig. 2a to 2h are diagrams showing a gasket of the first embodiment of the present invention and a modified example thereof.

Fig. 3a to 3d are diagrams showing a gasket of a second embodiment of the present invention and a modified example thereof.

Fig. 4a to 4c are diagrams showing a gasket of a third embodiment of the present invention and a modified example thereof.

Fig. 5a to 5k are diagrams showing a gasket of a fourth embodiment of the present invention and a modified example thereof.

Fig. 6a to 6b are views showing various examples of a stopper formed at a washer of a second embodiment of the present invention.

Fig. 7a to 7c are diagrams showing a gasket of a fifth embodiment of the present invention and a modified example thereof.

Fig. 8a to 8c are diagrams showing a gasket of a sixth embodiment of the present invention and a modified example thereof.

Detailed Description

Best Mode for Carrying Out The Invention

A gasket interposed between flanges as a connecting portion between a pipe and a pipe, the gasket characterized by comprising: a metal tooth-shaped gasket; a C-shaped ring end part formed on the inner side of the metal tooth-shaped gasket; and an outer ring end portion formed on the outer side of the metal tooth-shaped gasket.

Modes for carrying out the invention

The following description merely illustrates the principles of the invention. Those skilled in the art will be able to embody the principles of the invention and create various devices within the spirit and scope of the invention even if they are not explicitly described or shown in the specification. The conditional terms and examples appearing in the present specification are intended only to make the concept of the present invention understood, and they are not limited to the examples and conditions mentioned in the specification.

In order that those skilled in the art to which the invention pertains may readily practice the invention and make the aforementioned objects, features and advantages of the invention more comprehensible, the invention proceeds with reference to the accompanying drawings and detailed description.

In describing the present invention, it is to be understood that specific descriptions of known technologies related to the present invention are not necessary to obscure the gist of the present invention, and detailed descriptions thereof are omitted.

The gasket according to the embodiment of the present invention may have a ring shape as a whole according to the shape of the flange, but is not limited thereto, and may have various shapes such as an oval (oval), a quadrangle (quadrangle), a diamond (diamond), etc., as needed.

First, the metal tooth gasket 10 used in various embodiments of the present invention may be formed of a metal material for high temperature, for example, stainless steel (stainless) or Inconel (Inconel), so as to maintain excellent compression force and restoring force even under extreme conditions of high temperature, high pressure, etc. In more detail, the metal tooth shim 10 may be formed of stainless steel 347, Inconel 825, or the like.

Next, the drawings are to show cut surfaces of respective washers to effectively explain inner parts of the washers.

Fig. 2 to 5 are diagrams showing a gasket of various embodiments of the present invention and a modified example thereof.

Fig. 2a to 2f are diagrams showing a gasket of the first embodiment of the present invention and a modified example thereof.

As shown in fig. 2a, the gasket of the first embodiment of the present invention may include a metal tooth shaped gasket 10, a C-shaped ring end portion 11 formed on an inner side I of the metal tooth shaped gasket 10, and an outer ring end portion 12 formed on an outer side O of the metal tooth shaped gasket 10.

Also, the serration members may be formed on the upper and lower surfaces of the metal tooth gasket 10, respectively. Such a serration member may be formed by serration (serration) machining. The gasket of the first embodiment of the present invention can concentrate the load of the coupling bolt under low compression force to the peak portions of the serration members by the serration members formed on the upper and lower surfaces of the metal tooth gasket 10, thereby maintaining the complete sealability under low compression force.

When the washer is mounted on the flange, the outer ring end 12 formed on the outer side O of the metal tooth gasket 10 serves to guide the washer to be mounted at a correct position.

More specifically, when the gasket is mounted to the flanges, the gasket is compressed between the flanges. In this case, the outer ring end 12 is in contact with the inside of the flange coupling bolt (not shown in the drawings), and therefore, the outer ring end 12 can prevent the washer from being deformed in the lateral direction and guide the washer to be mounted at a more correct position.

The outer ring end 12 is formed integrally with the metal tooth gasket 10.

The gasket of the first embodiment of the present invention may be modified as shown in fig. 2 b. The washer shown in fig. 2b may also include a core spring 13 housed inside through an opening 14 in the end 11 of the C-ring.

In the above-described gasket, since the C-ring end 11 is formed on the inner side I of the metal tooth gasket 10, the core spring 13 can be simply fixedly attached to one side of the metal tooth gasket 10 without an outer jacket (jack). Further, such a core spring 13 may provide a high yield characteristic to the gasket to enable an improvement in the restoring force of the gasket.

That is, a gasket including the C-ring end 11 having a self-energizing function and the core spring 13 that assists the self-energizing function of the C-ring end 11 may have a restoring force and sealing property improved more than those of the related art gasket including only a metal tooth-shaped gasket.

The gasket of the first embodiment of the present invention may be modified as shown in fig. 2 c. The gasket of fig. 2C may also comprise an eyelet 15 surrounding the C-ring end 11.

The core spring 13 is accommodated inside the C-shaped ring end 11, and the core spring 13 may be exposed to the outside through the opening portion 14 of the C-shaped ring end 11. As described above, in order to prevent at least a part of the C-ring end 11 including the core spring 13 from being exposed to the outside, the above-described eyelet 15 surrounds the C-ring end 11 in a direction blocking the opening 14 of the C-ring end 11.

Also, the eyelet 15 may be formed to surround the entire outer side surface of the C-shaped ring end 11 formed at the metal tooth gasket 10 so that the C-shaped ring end 11 including the core spring 13 is fundamentally cut off from the outside.

That is, the fluid flowing through the pipe is blocked from directly contacting the inner part of the gasket by the structure as described above, thereby reducing the turbulence caused by the fluid.

On the other hand, the washer of the first embodiment of the present invention may be modified as shown in fig. 2 d. In the gasket of fig. 2d, the opening 14 of the C-ring end 11 may be subjected to a welding process W in order to seal the interior of the C-ring end 11.

As described above, the core spring 13 is accommodated inside the C-ring end 11, and the core spring 13 may be exposed to the outside through the opening portion 14 of the C-ring end 11. In contrast, in order to protect the core spring 13 from gas or fluid that may corrode metal, the opening 14 of the C-ring end 11 may be subjected to a welding process W.

On the other hand, as shown in fig. 2e to 2h, the gasket of the first embodiment of the present invention may be modified to have a form including a convex (convex type) metal tooth-shaped gasket 10.

The convex-type metal tooth-shaped gasket 10 can be understood to mean a metal tooth-shaped gasket in which the central portion of the metal tooth-shaped gasket 10 is more protruded in the up-down direction than both end portions on the inside and outside thereof.

However, the height of each peak portion formed at both end portions of the metal tooth-shaped gasket 10 is the same as that of the saw tooth member formed at the center portion of the metal tooth-shaped gasket 10, but the size of the saw tooth is smaller from both end portions toward the center portion.

With the structure as described above, the sealing layer (not shown in the drawings) surrounding the gasket can be more firmly inserted between the serrations of the serration member formed at the central portion of the metal tooth-shaped gasket having the highest pressure on the installation surface of the gasket, and thus, the gasket of the first embodiment of the present invention can have a higher sealing effect than the existing gasket.

Fig. 3a to 3d are diagrams showing a gasket of a second embodiment of the present invention and a modified example thereof.

As shown in fig. 3a, the gasket of the second embodiment of the present invention may include: a metal tooth-shaped gasket 10; a C-shaped ring end 11 formed on the inner side I of the metal tooth-shaped gasket 10; and an outer ring end portion 12 formed on an outer side O of the metal tooth gasket 10.

The saw tooth members may be formed on the upper and lower surfaces of the metal tooth gasket 10, respectively.

Also, the stopper 16 may be formed on at least a portion of the upper and lower surfaces of the metal tooth gasket 10.

In addition, the gasket of the second embodiment of the present invention may be modified as shown in fig. 3 b.

The gasket of fig. 3b may further comprise a core spring 13 accommodated inside the C-shaped ring end 11 through the opening 14 of the C-shaped ring end 11.

Also, the gasket of the second embodiment of the present invention may be modified as shown in fig. 3C, and the gasket of fig. 3C may further include an eyelet 15 surrounding the C-shaped ring end 11.

On the other hand, the washer of the second embodiment of the present invention may be modified as shown in fig. 3 d. In the gasket of fig. 3d, the opening 14 of the C-ring end 11 may be subjected to a welding process W in order to seal the interior of the C-ring end 11.

As shown in fig. 3a to 3d, at least one stopper 16 may be formed on at least a portion of the upper surface of the metal tooth pad 10 instead of the saw tooth member. Of course, instead of the saw-tooth member, at least one stopper 16 may be formed on at least a portion of the lower surface of the metal tooth shim 10.

The stopper 16 refers to a flat surface structure itself formed on at least a part of the upper and lower surfaces of the metal tooth gasket 10.

For example, the stopper 16 may be formed as a flat surface extending horizontally at a point lower than the crest portion and higher than the trough portion of the serration member of the metal tooth-shaped gasket 10.

As another example, the stopper 16 may be formed between the crest portions of the serration member and the crest portions as shown in fig. 6a to 6 b.

As described above, the gasket of the second embodiment of the present invention and the modified example thereof include the above-described stopper 16 to be able to prevent the sealing layer (not shown in the drawings) around the gasket and the peak portions of the serration member from being excessively compressed due to the pressure applied to the gasket, and therefore, the gasket can maintain the optimum sealing state.

Fig. 4a to 4c are diagrams showing a gasket of a third embodiment of the present invention and a modified example thereof.

As shown in fig. 4a, the gasket of the third embodiment of the present invention may include a male metal tooth shaped gasket 10 and a C-ring end portion 11 formed on the inner side I of the metal tooth shaped gasket 10.

As in the previous embodiment, serrations may be formed on the upper and lower surfaces of the metal tooth pad 10 of the washer of the third embodiment described above.

Also, the gasket of the third embodiment of the present invention may be modified as shown in fig. 4 b.

The gasket of fig. 4b may further comprise a core spring 13 accommodated inside the above-mentioned C-ring end 11 through an opening 14.

In addition, the gasket of the third embodiment of the present invention may be modified as shown in fig. 4C, and the gasket of fig. 4C may further include an eyelet 15 surrounding the C-shaped ring end 11.

Fig. 5a to 5i are diagrams showing a gasket of a fourth embodiment of the present invention and a modified example thereof.

As shown in fig. 5a, the gasket of the fourth embodiment of the present invention may include: a metal tooth-shaped gasket 10; a first C-shaped ring end 11a formed on the inner side I of the metal tooth-shaped gasket 10; a first core spring 13a accommodated inside the first C-ring end portion 11 a; a second C-ring end 11b formed on the outer side O of the metal tooth gasket 10; and a second core spring 13b accommodated inside the second C-ring end portion 11 b.

The gasket of the fourth embodiment described above includes two C-ring ends 11a, 11b on both sides of the metal tooth gasket 10, so that the restoring force and sealing property of the gasket can be further improved as compared with the case where only one C-ring end is formed on the inner side I of the metal tooth gasket 10.

Also, the gasket of the fourth embodiment of the present invention may be modified as shown in fig. 5 b.

The gasket of fig. 5b may also include a first bore 15a surrounding the first C-ring end 11a and a second bore 15b surrounding the second C-ring end 11 b.

The first core spring 13a and the second core spring 13b are accommodated in the first C-ring end portion 11a and the second C-ring end portion 11b, respectively, and the above-described first core spring 13a and the second core spring 13b are exposed to the outside through an opening portion 14a formed in the first C-ring end portion 11a and an opening portion 14b formed in the second C-ring end portion 11b, respectively. As described above, in order to prevent the respective core springs 13a, 13b and at least a part of the respective C-ring ends 11a, 11b from being exposed to the outside, the first eyelet 15a surrounds the first C-ring end 11a in a direction blocking the opening 14a of the first C-ring end 11a, and the second eyelet 15b surrounds the second C-ring end 11b in a direction blocking the opening 14b of the second C-ring end 11 b.

The fluid that flows through the pipe is more effectively prevented by the perforations as described above from coming into direct contact with the inner part of the gasket, so that the turbulence caused by said fluid can be further reduced.

On the other hand, the gasket of the fourth embodiment of the present invention may be modified as shown in fig. 5 c.

The gasket of fig. 5c may comprise: a metal tooth-shaped gasket 10; a first C-shaped ring end 11a formed on the inner side I of the metal tooth-shaped gasket 10; a first core spring 13a housed inside the first C-ring end portion 11 a; a second C-ring end 11b formed on the outer side O of the metal tooth gasket 10; a second core spring 13b accommodated inside the second C-ring end portion 11 b; and an outer ring 17 formed on the outer side O of the opening 14b of the second C-ring end 11 b.

Unlike the outer ring end 12 of fig. 2a, the outer ring 17 described above may be formed separately from the metal tooth washer 10 or the second C-ring end 11 b.

However, the outer ring 17 serves to guide the washer into the correct position when it is mounted on the flange, as in the outer ring end 12 of fig. 2 a. In addition, the outer ring 17 may function to seal the opening 14b of the second C-ring end 11 b. Thereby, the second core spring 13b accommodated inside the second C-ring end portion 11b can be blocked from being exposed to the outside.

A fourth embodiment of the gasket of the present invention may be modified as shown in figure 5 j.

The gasket of fig. 5j comprises: a metal tooth-shaped gasket 10; a first C-shaped ring end 11a formed on the inner side I of the metal tooth-shaped gasket 10; a first core spring 13a accommodated inside the first C-ring end portion 11 a; a second C-ring end 11b formed on the outer side O of the metal tooth gasket 10; and a second core spring 13b accommodated inside the second C-ring end 11b, wherein the openings 14a, 14b of the first C-ring end 11a and the second C-ring end 11b are subjected to a welding process W so as to be able to seal the insides of the first C-ring end 11a and the second C-ring end 11 b.

On the other hand, the gasket of the fourth embodiment of the present invention may be modified as shown in fig. 5d to 5 f.

The gasket of fig. 5d may comprise: a metal tooth-shaped gasket 10 including a central portion that is more convex in the up-down direction than both end portions; a first C-shaped ring end 11a formed on the inner side I of the metal tooth-shaped gasket 10; a first core spring 13a accommodated inside the first C-ring end portion 11 a; a second C-ring end 11b formed on the outer side O of the metal tooth gasket 10; and a second core spring 13b accommodated inside the second C-ring end portion 11 b.

In contrast to the gasket of fig. 5d, the gasket of fig. 5e may further comprise a first bore 15a surrounding the first C-ring end 11a and a second bore 15b surrounding the second C-ring end 11 b.

In contrast to the gasket of fig. 5d, the gasket of fig. 5f may further comprise an outer ring 17 formed outside the opening 14b of the second C-ring end 11 b.

Also, the gasket of the fourth embodiment of the present invention may be modified as shown in fig. 5g to 5 i.

The gasket of fig. 5g may include: a metal tooth-shaped gasket 10 having stoppers 16 formed on the upper and lower surfaces thereof; a first C-shaped ring end 11a formed on the inner side I of the metal tooth-shaped gasket 10; a first coil spring 13a accommodated inside the first C-ring end portion 11 a; a second C-ring end 11b formed on the outer side O of the metal tooth gasket 10; and a second coil spring 13b accommodated inside the second C-shaped ring end portion 11 b.

In contrast to the gasket of fig. 5g, the gasket of fig. 5h may also include a first bore 15a surrounding the first C-ring end 11a and a second bore 15b surrounding the second C-ring end 11 b.

In contrast to the gasket of fig. 5g, the gasket of fig. 5i may further include an outer ring 17 formed outside the opening portion 14b of the second C-ring end portion 11 b.

Fig. 7a to 7c are diagrams showing a gasket of a fifth embodiment of the present invention and a modified example thereof.

As shown in fig. 7a, the gasket of the fifth embodiment of the present invention may include: a metal member 20 made of a metal material and having an upper surface and a lower surface which are flat in the horizontal direction; and a C-shaped ring end 11 formed on the inner side I of the metal member 20.

The gasket of the fifth embodiment of the present invention can prevent the C-shaped ring end 11 from being excessively compressed by the metal member 20 having the upper and lower surfaces flat in the horizontal direction, and can replace the role of guiding the outer ring end 12 of fig. 2 where the gasket is mounted in the correct position when mounting the gasket to the flange.

The gasket of the fifth embodiment of the present invention may be modified as shown in fig. 7b to 7 c.

In contrast to the washer of fig. 7a described above, the washer of fig. 7b may further comprise a coil spring 13 housed inside the C-shaped ring end 11 described above.

In the gasket of fig. 7C, the opening 14 of the C-ring end 11 may be welded, as compared to the gasket of fig. 7 b.

Fig. 8a to 8c are diagrams showing a gasket of a sixth embodiment of the present invention and a modified example thereof.

As shown in fig. 8a, the gasket of the sixth embodiment of the present invention may include: a metal member 20 made of a metal material and having an upper surface and a lower surface which are flat in the horizontal direction; a first C-shaped ring end 11a formed on the inner side I of the metal member 20; and a second C-ring end 11b formed on the outer side O of the metal member 20.

The gasket of the sixth embodiment of the present invention may be modified as shown in fig. 8b to 8 c.

In contrast to the washer of fig. 8a, the washer of fig. 8b may further include a first core spring 13a accommodated inside the first C-ring end 11a and a second core spring 13b accommodated inside the second C-ring end 11 b.

In contrast to the gasket of fig. 8b, in the gasket of fig. 8C, the openings 14a and 14b of the first C-ring end 11a and the second C-ring end 11b may be subjected to a welding process.

On the other hand, in the washers of the various embodiments of the present invention and the modified examples thereof, flat coil springs may be employed as the core springs 13, 13a, 13 b. Such core springs 13, 13a, 13b can secure the restoring force of the gasket and appropriately disperse the pressure applied to the gasket from the outside to prevent the concentration of force on a specific portion of the gasket, thereby improving the durability of the gasket.

As described above, according to various embodiments of the present invention, first, the gasket may ensure a higher anchoring force and restoring force than other gaskets having the same size. Therefore, the sealability of the gasket is improved even at high temperature and high pressure.

Second, the core spring can be simply fixedly attached without an outer sheath by forming the end of the C-ring at one side of the metal tooth washer. Therefore, it is possible to provide a gasket capable of reducing the production cost by the above-described simple structure. Further, the restoring force of the gasket can be increased.

Third, by the serration members formed on the upper and lower surfaces of the metal tooth gasket, it is possible to concentrate the load of the coupling bolt at the peak portions of the serration members even under low compression force. Thus, complete sealing may be provided.

Fourth, since the C-ring ends are formed at both sides of the metal tooth gasket, the restoring force and the sealing property of the gasket can be further improved.

Fifth, the gasket includes an aperture surrounding the end of the C-ring of the metal castellated shim, thereby blocking the inner part of the gasket from direct contact with the fluid flowing through the pipe to reduce turbulence caused by the fluid.

Sixth, a flat coil spring is used as a core spring, so that not only a restoring force is secured, but also a pressure is uniformly dispersed, so that the life of the gasket can be extended.

Seventh, since the gasket includes the metal tooth-shaped gasket having the central portion that is more protruded in the up-down direction than both end portions, the sealing layer covering the gasket can be more firmly inserted between the serrations of the serration member of the metal tooth-shaped gasket and the serrations at the central portion where the gasket mounting surface pressure is highest, so that the sealing effect can be increased.

Eighth, the sealing layer of the gasket and the saw-tooth member are prevented from being excessively compressed by providing a stopper at least a portion of the saw-tooth member of the metal tooth gasket, so that an optimum sealing state can be maintained.

On the other hand, the above description relates only to a description of a specific embodiment of the technical spirit of the present invention, and those skilled in the art to which the present invention pertains will be readily subjected to various modifications, changes, and substitutions without departing from the essential characteristics thereof.

Therefore, the disclosed embodiments and drawings of the present invention are not intended to limit but to describe the technical spirit of the present invention, and the scope of the present invention should not be limited to the embodiments and drawings. The scope of the invention should be determined by the appended claims, and all technical spirit within the scope of equivalents should be interpreted as falling within the scope of the present invention.

Industrial applicability

The gasket according to the preferred embodiment of the present invention has the following effects.

First, the washer may ensure a higher anchoring force and restoring force than other washers having the same size. Therefore, the sealability of the gasket is improved even at high temperature and high pressure.

Second, the core spring can be simply fixedly attached without an outer sheath by forming the end of the C-ring at one side of the metal tooth washer. Therefore, it is possible to provide a gasket capable of reducing the production cost by the above-described simple structure. Further, the restoring force of the gasket can be increased.

Third, by the serration members formed on the upper and lower surfaces of the metal tooth gasket, it is possible to concentrate the load of the coupling bolt at the peak portions of the serration members even under low compression force. Thus, complete sealing may be provided.

Fourth, since the C-ring ends are formed at both sides of the metal tooth gasket, the restoring force and the sealing property of the gasket can be further improved.

Fifth, the gasket includes an aperture surrounding the end of the C-ring of the metal castellated shim, thereby blocking the inner part of the gasket from direct contact with the fluid flowing through the pipe to reduce turbulence caused by the fluid.

Sixth, a flat coil spring is used as a core spring, so that not only a restoring force is secured, but also a pressure is uniformly dispersed, so that the life of the gasket can be extended.

Seventh, since the gasket includes the metal tooth-shaped gasket having the central portion that is more protruded in the up-down direction than both end portions, the sealing layer covering the gasket can be more firmly inserted between the serrations of the serration member of the metal tooth-shaped gasket and the serrations at the central portion where the gasket mounting surface pressure is highest, so that the sealing effect can be increased.

Eighth, the sealing layer of the gasket and the saw-tooth member are prevented from being excessively compressed by providing a stopper at least a portion of the saw-tooth member of the metal tooth gasket, so that an optimum sealing state can be maintained.