WO2018105798A1

WO2018105798A1 - Gasket comprising movable stopper

Info

Publication number: WO2018105798A1
Application number: PCT/KR2016/014533
Authority: WO
Inventors: 강한표
Original assignee: 주식회사 원대티지케이
Priority date: 2016-12-09
Filing date: 2016-12-12
Publication date: 2018-06-14

Abstract

A gasket for cases where two opposing pipes are separated from a coupling in a grooved mechanical pipe joining system (also referred to as a non-welding pipe joining system), according to the present invention, comprises: a U-shaped base portion formed along the cross section of the gasket; a sealing portion protruding from both edges of the base portion and tilting toward a central region of the base portion; and a moveable stopper protruding from the sealing portion, wherein, when two opposing pipes are received in the coupling, the base portion and the sealing portion surround the two opposing pipes on the end portions of the pipes along the ring shape of the gasket, and the moveable stopper is positioned between the end portions.

Description

Gasket with Moving Stopper

The present invention relates to a gasket comprising a moving stopper to seal by the compression force of the coupling the ends of two opposing pipes which are enclosed with a coupling and inserted into the coupling in a weldless pipe fastening system.

In general, a grooved mechanical pipe joining system (also referred to as a 'non-welded pipe joining system') is a grooved pipe, coupling, sealing, and screw formed on two outer circumferential surfaces. It consists of members. Pipes grooved in the two outer circumferential surfaces are received in or separated from the coupling through both sides of the approximately ring-shaped coupling.

The coupling has a lower housing and an upper housing made of metal located along the ring shaped sealing portion. When receiving the two grooved tubing in the coupling, the sealing portion is made of rubber and received in the lower housing and the upper housing and positioned on the opposite ends of the two grooved tubing to surround the ends.

The screw member is located on both sides of the coupling to helically couple the lower and upper housings. Here, the coupling engages with the grooves of the two pipes while applying a compressive force to the sealing portion through the lower housing and the upper housing during engagement of the lower housing, the upper housing and the screw member.

Through this, the mechanically grooved pipe fastening system shortens working time compared to pipe fastening system using welding, screws and flanges. On the other hand, the mechanical grooved pipe fastening system can be described in more detail with respect to the role of the sealing portion in Figs.

In FIG. 1, the sealing part 50 is shown in a cut ring shape for structural description but may be formed in a complete ring shape before being cut. The sealing portion 50 is composed of a base 10, first and

second flanges

24 and 28, a fixed stopper 33, and first and

second lip members

36 and 39 along the cut surface.

The base 10 has a belt shape along the sealing part 50. The first and

second flanges

24 and 28 protrude toward the inside of the sealing part 50 from both edges of the base 10. The fixed stopper 33 protrudes from the central area of the base 10 toward the interior of the sealing part 50.

The first and

second lip members

36, 39 are positioned below the base 10 and protrude from the first and

second flanges

24, 28 toward the stationary stopper 33. In FIG. 2, when the two facing

pipes

64 and 68 are sequentially received in the sealing part 50, one pipe 64 is sealed through one inlet of the sealing part 50. Is housed inside.

Here, one pipe 64 pushes the stationary stopper 33 and the first lip member 36 through the stationary stopper 33 and the first lip member 36 through the contact surface CS and the first sealing surface 36S. ) The remaining pipe 68 may be accommodated inside the sealing unit 50 through the other side inlet of the sealing unit 50.

The remaining pipe 68 also contacts the fixed stopper 33 and the second lip portion 39 through the contact surface CS and the second sealing surface 39S while pushing the fixed stopper 33 and the second lip member 39. Can be. The two

pipes

64 and 68 may be restricted in movement through the fixed stopper 33 inside the sealing part 50.

However, during the service life of the sealing part 50, the repetition for receiving the two

pipes

64 and 68 in the sealing part 50 and separating the two

pipes

64 and 68 from the sealing part 50. Due to the operation, the fixed stopper 33 repeatedly frictions with the two

pipes

64 and 68 through the contact surface CS, and loses its initial shape according to the number of repetitive operations.

In addition, during the continuous application of pressure inside the pipe to the seal 50, the fixed stopper 33 forms two

pipes

64, 68 along the flow direction of the fluid flowing through the two

pipes

64, 68. Since the contact force is different, it causes warpage on or separates from the base 10.

In the mechanical grooved pipe fastening system, the gasket 50 is disclosed as a prior art in Korean Patent Publication No. 10-2005-0121743, and Korean Patent Publication No. 10-2016-0102153.

The present invention has been made to solve the conventional problems, in the mechanical grooved fastening system, surrounded by the coupling,

During the service life of the sealing part, due to the repetitive work for accommodating the two pipes in the coupling, the initial shape of the internal structure due to friction with the two pipes is not lost,

It is an object of the present invention to provide a gasket comprising a moving stuffer which is adapted to not cause deformation against the initial phenomenon on the base when in contact with the two pipes while the pipe internal pressure is continuously applied.

According to the present invention, a gasket includes a first coupling member and a second coupling member respectively positioned on a lower side and an upper side of a coupling, and the first coupling member and the second coupling on both sides of the coupling. From said coupling so as to be adapted to seal said ends by the compressive force of said coupling, located along the ends of two opposing pipes received by said coupling and enclosed by a screw member for helically joining said members. When separating two opposing pipes, along the cut surface of the gasket, a 'U' shaped base, a seal projecting from both edges of the base and inclined to face the central area of the base, and the seal A moving stopper protruding from the portion and when receiving the two opposing pipes in the coupling, Exchanger base and the seal surrounding the pipe on two opposing end portions of said ring along the shape of the gasket, the mobile stopper is characterized in that located between the end portions.

The base may form a closed strip along the ring shape of the gasket when separating the two opposing pipes from the coupling or when receiving the two opposing pipes in the coupling.

The base portion is a tube that opens in the center around the center of the gasket when separating the two opposing pipes from the coupling or when receiving the two opposing pipes in the coupling. Can be.

When the base receives the two opposing pipes in the coupling, the base can absorb and deform a portion of the compression force of the coupling and transfer the remaining compression force of the coupling to the seal.

The seal is located on the base and partially covers or completely covers the opening of the base when separating the two opposing pipes from the coupling or when receiving the two opposing pipes in the coupling. Can be covered.

When the seal receives the two opposing pipes in the coupling, the seal can move relative to the base through contact with the two opposing pipes and move toward the inside of the base.

The seal may contact the outer circumferential surface of the two opposing pipes on the ends when receiving the two opposing pipes in the coupling.

The moving stopper may extend obliquely toward a direction away from the central region of the base when separating the two opposing pipes from the coupling.

The moving stopper may extend perpendicularly away from the central region of the base when separating the two opposing pipes from the coupling.

The moving stopper may be positioned vertically between the ends in the two opposing pipes when receiving the two opposing pipes in the coupling.

The moving stopper may have free ends along the ring shape of the coupling when separating the two opposing pipes from the coupling and when receiving the two opposing pipes in the coupling. .

When separating the two opposing pipes from the coupling, the seal and the moving stopper each have a first projection and a second projection, and the moving stopper is perpendicular to the direction away from the central region of the base. Can be extended.

The first protrusion and the second protrusion may be in contact with an outer circumferential surface and an inner circumferential surface defining one pipe around the one side inlet of the gasket or around the other side of the gasket in a band along the ring shape of the coupling. Can be.

When receiving the two opposing pipes in the coupling, the seal and the movable stopper are in contact with the ends on the two opposing pipes, and the movable stopper is inserted between the ends so that the end Contact with them.

When receiving the two opposing pipes in the coupling, along the ring shape of the coupling, a movement stopper around one inlet of the gasket and a movement stopper around the other inlet contact each other between the ends. Or spaced apart from each other.

When receiving the two opposing pipes in the coupling, the base is compressed by the compressive force of the coupling and the seal is pressed by the two opposing pipes and rotated relative to the base so that the Moving toward the base, the movement stopper can be pushed by the two opposing pipes to move towards the central area of the base along the movement of the seal.

As described above, in a mechanically grooved fastening system, when separating two opposing pipes from a coupling, the gasket is cut along the cut surface by partially cutting the ring-shaped gasket, thus forming a 'U' shaped base, base. A seal that protrudes from both edges of the seal and tilts to face the central area of the base, and a moving stopper that protrudes from the seal,

The present invention, during the service life, during the repetitive work for the receiving of two pipes in the coupling, the impact force given to the seal and the mobile stopper from the two opposing pipes in the interior to spend most of the movement of the seal and the mobile stopper Even in the case of repeated contact with the sealing portion and the moving stopper, it is possible to prevent the initial shape of the moving stopper from being lost.

According to the present invention, when the internal pressure of the pipe is continuously applied, the individual pipe is contacted with the moving stopper around the inlet of the coupling and the moving stopper around the other inlet of the coupling when contacted with the two pipes. The impact force of the individual pipes can be given only to the moving stopper to keep the moving stopper in its initial shape.

1 is a perspective view showing a gasket according to the prior art.

2 is a schematic view showing a state in which two pipes are inserted into the gasket of FIG. 1.

3 is a perspective view showing a gasket according to the present invention.

4 is a partial cross-sectional view showing a gasket taken along the cutting line I-I 'of FIG.

5 is a partial cross-sectional view showing a first modification of the gasket of FIG. 4.

6 is a partial cross-sectional view showing a second modification of the gasket of FIG. 4.

7 to 9 are schematic diagrams illustrating a method of using the gasket of FIG. 3.

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 can easily implement the present invention.

3 is a perspective view showing a gasket according to the present invention, and FIG. 4 is a partial cross-sectional view showing the gasket taken along the cutting line II ′ of FIG. 3.

Referring to FIGS. 3 and 4, the gasket 80 according to the present invention, in a grooved mechanical pipe joining system 150 in FIG. 7, is coupled to 140 in FIG. 7. The first coupling member (133 in FIG. 7) and the second coupling member (136 in FIG. 7) and the first coupling member 133 on both sides of the coupling 140 respectively positioned on the lower side and the upper side of the coupling 140. It is surrounded by a screw member 139 that helically couples the second coupling member 136.

In addition, the gasket 80 is located along the ends of two opposing pipes (P1, P2 in FIG. 9) received in the coupling 140 to be suitable for sealing the ends by the compressive force of the coupling 140. Is implemented. Meanwhile, in FIGS. 3 and 4, the gasket 80 is partially separated from the coupling 140 in a state in which two opposing pipes P1 and P2 are separated from the coupling 140 and partially complete the ring shape. Incision is shown.

More specifically, the gasket 80 includes a base portion 73, a sealing portion 76, and a moving stopper 79 along the cut surface of the gasket 80. The base 73 has a 'U' shape. Here, the base portion 73 forms a closed band along the ring shape of the gasket 80. The base 73 is a tube that is open at the center around the center of the gasket 80.

The sealing portion 76 protrudes from both edges of the base portion 73 and is inclined to face toward the central region of the base portion 73. More specifically, the seal 76 is located on the base 73 and partially covers the opening of the base 73. The sealing portion 76 has a sealing surface 76S in contact with the outer circumferential surfaces of two opposing pipes P1 and P2 on the outer circumferential surface of the gasket 80.

The moving stopper 79 protrudes from the seal 76. More specifically, the moving stopper 79 extends obliquely toward the direction away from the central region of the base 73. Here, the movement stopper 79 is divided into a movement stopper 79 around one inlet of the gasket 80 and a movement stopper 79 around the other inlet of the gasket 80. 79 and the moving stopper 79 around the other inlet are opened away from each other from the central region of the gasket 80.

The moving stopper 79 has, on the outer circumferential surface of the gasket 80, a contact surface CS1 in contact with the ends of two opposing pipes P1, P2. The moving stopper 79 has a free end along the ring shape of the coupling 140.

5 is a partial cross-sectional view showing a first modification of the gasket of FIG. 4. In this case, FIG. 5 is separated from the coupling 140 in a state in which two opposing pipes P1. P2 are separated from the coupling 140 in a mechanically grooved pipe fastening system 150. The gasket 100 is shown partially cut away from the complete ring shape as shown.

Referring to FIG. 5, the gasket 100 has a shape similar to that of the gasket 80 of FIG. 4, but has a moving stopper 99 different from the moving stopper 79 of the gasket 80. That is, the moving stopper 99 extends vertically in the direction away from the central region of the base 93 on the seal 96.

More specifically, the moving stopper 99 is divided into a moving stopper 99 around one inlet of the gasket 100 and a moving stopper 99 around the other inlet of the gasket 100. The moving stopper 99 and the moving stopper 99 around the other inlet extend parallel to each other from the central region of the gasket 100. Meanwhile, the gasket 100 may replace the gasket 80 of FIG. 4.

6 is a partial cross-sectional view showing a second modification of the gasket of FIG. 4. In this case, FIG. 6 is separated from the coupling 140 with two opposing pipes P1. P2 separated from the coupling 140 in the mechanically grooved piping fastening system 150 and FIG. 4. The gasket 120 is shown partially cut in the complete ring shape as shown.

Referring to FIG. 6, the gasket 120 has a shape similar to that of the gasket 80 of FIG. 4, but is different from the sealing part 76 and the moving stopper 79 of the gasket 80. 119). That is, the sealing part 115 and the moving stopper 119 have a first protrusion 113 and a second protrusion 117, respectively. The moving stopper 119 extends vertically in a direction away from the central region of the base 111 as shown in FIG. 5.

More specifically, the movement stopper 119 is divided into a movement stopper 119 around one inlet of the gasket 120 and a movement stopper 119 around the other inlet of the gasket 120. The moving stopper 119 and the moving stopper 119 around the other inlet extend parallel to each other from the central region of the gasket 120. Meanwhile, the gasket 120 may replace the gasket 80 of FIG. 4.

7 to 9 are schematic diagrams illustrating a method of using the gasket of FIG. 3. In this case, FIG. 7 shows a gasket 80 enclosed from the coupling 140 with two opposing pipes P1. P2 separated from the coupling 140 in a mechanically grooved piping fastening system 150. To show. 8 and 9 show the insertion of two tubing P1. P2 into the gasket 80 in the coupling 140.

7 to 9, the mechanical grooved pipe fastening system 150 and two pipes P1 and P2 may be prepared. The mechanically grooved pipe fastening system 150 has a coupling 140 including a gasket 80, a first coupling member 133, a second coupling member 136, and a screw member 139. The gasket 80, the first coupling member 133, the second coupling member 136, and the screw member 139 have been described with reference to FIGS. 3 and 4.

In addition, the gasket 80 may be replaced by the gasket 100 of FIG. 5 or the gasket 120 of FIG. 6. In more detail, in the coupling 140, the screw member 139 may be released from the first coupling member 133 and the second coupling member 136. Of course, even when receiving two opposing pipes P1. P2 in the coupling 140, the base 73 may form a closed band along the ring shape of the gasket 80.

The base 73 may be a tube that is open at the center about the center of the gasket 80. Through this, the base portion 73 may serve as a cushion for the sealing portion 76 and the moving stopper 79 of the gasket 80. When the first coupling member 133 and the second coupling member 136 are tightened by the screw member 139, the base 73 may be compressed by the compression force of the coupling 140.

More specifically, the base 73 may absorb a portion of the compressive force of the coupling 140 and deform as shown in FIG. 8, and transmit the remaining compressive force of the coupling 140 to the seal 76. When the two facing pipes P1, P2 are received in the coupling 140 toward the first and second insertion directions M1, M2, the seal 76 is positioned on the base 73. This can partially or completely cover the opening of the base 73.

The seal 76 can be pressed by two opposing pipes P1, P2 and rotated relative to the base 73 to move towards the base 73. That is, the seal 76 may move relative to the base 73 by moving in contact with the two opposing pipes P1 and P2 and move toward the inside of the base 73.

In this way, the base 73 and the seal 76 surround the two opposing pipes P1, P2 on the ends of the two opposing pipes P1, P2 along the ring shape of the gasket 80. All. The seal 76 may contact the outer circumferential surfaces of the two opposing pipes P1. P2 via the seal surface 76S on the ends of the two opposing pipes P1, P2.

When receiving two opposing pipes P1 and P2 in the coupling 140, the movable stopper 79 is pushed by two opposing pipes P1 and P2 to prevent movement of the seal 76. Thus, it can move toward the central region of the base 73. Here, the movable stopper 79 may be located between the ends of two opposing pipes P1. P2.

More specifically, the moving stopper 79 may be positioned vertically between the ends in two opposing pipes P1. P2. The moving stopper 79 may have a free end along the ring shape of the coupling 140. In addition, the seal 76 and the moving stopper 76 may contact the ends on two opposing pipes P1, P2.

The moving stopper 76 may be inserted between the ends of two opposing pipes P1, P2 to contact the ends of the two opposing pipes P1, P2. More specifically, along the ring shape of the coupling 140, the moving stopper 79 around one inlet of the gasket 80 and the moving stopper 79 around the other inlet are two opposite pipes ( The ends of P1, P2 may be in contact with one another or spaced apart from one another.

When the first coupling member 133 and the second coupling member 136 are continuously tightened by the screw member 139, the gasket 80 is connected to the ends of two opposing pipes P1. P2. In close contact with each other, the coupling 140 is inserted into the first and second grooves G1 and G2 of the two opposing pipes P1 and P2 so that the two coupling pipes P1 together with the gasket 80 may be provided. May surround the ends of P2).

Up to now, the gasket 80 may be described in the same manner even if the gasket 80 is replaced with the gasket 100 of FIG. 5 or the gasket 120 of FIG. 6. However, since the gasket 120 has the first protrusion 113 and the second protrusion 117 in the sealing portion 115 and the moving stopper 119, respectively, two pipes facing the coupling 140 are provided. When accommodating (P1, P2), the first protrusion 113 and the second protrusion 117 is formed along the ring shape of the coupling 140 around the one inlet around the gasket 120 or the other around the inlet In contact with the outer peripheral surface and the inner peripheral surface defining a single pipe (P1 or P2), respectively.

Claims

A first coupling member and a second coupling member respectively positioned on a lower side and an upper side of a coupling, and a screw member for spirally coupling the first coupling member and the second coupling member on both sides of the coupling; A ring-shaped gasket, which is enclosed by and positioned along the ends of two opposing pipes received in the coupling, adapted to seal the ends by the compressive force of the coupling,

When separating the two opposing pipes from the coupling,

Along the cutting surface of the gasket, a 'U' shaped base portion, a seal portion projecting from both edges of the base portion and inclined to face the central region of the base portion, and a moving stopper projecting from the seal portion,

When receiving the two opposing pipes in the coupling,

The base and the seal surround the two opposing pipes on the ends along the ring shape of the gasket,

The gripping stopper is located between the ends.
According to claim 1,

Wherein the base forms a closed band along the ring shape of the gasket when separating the two opposing pipes from the coupling or when receiving the two opposing pipes in the coupling.
According to claim 1,

The base is a tube that is opened in the center about the center of the gasket when separating the two opposing pipes from the coupling or when receiving the two opposing pipes in the coupling. gasket.
According to claim 1,

The base portion, when receiving the two opposing pipes in the coupling, absorbs a portion of the compressive force of the coupling and deforms and delivers the remaining compressive force of the coupling to the seal.
According to claim 1,

The seal is located on the base and partially covers or completely covers the opening of the base when separating the two opposing pipes from the coupling or when receiving the two opposing pipes in the coupling. Covering gasket.
According to claim 1,

And the seal, when receiving the two opposing pipes in the coupling, rotates relative to the base through contact with the two opposing pipes and moves toward the inside of the base.
According to claim 1,

The seal is in contact with the outer circumferential surface of the two opposing pipes on the ends when receiving the two opposing pipes in the coupling.
According to claim 1,

The moving stopper extends obliquely toward a direction away from the central region of the base when separating the two opposing pipes from the coupling.
According to claim 1,

And the movable stopper extends perpendicularly away from the central area of the base when separating the two opposing pipes from the coupling.
According to claim 1,

The moving stopper is positioned perpendicularly between the ends in the two opposing pipes when receiving the two opposing pipes in the coupling.
According to claim 1,

The movable stopper having a free end along the ring shape of the coupling when separating the two opposing pipes from the coupling and when receiving the two opposing pipes in the coupling.
According to claim 1,

When separating the two opposing pipes from the coupling,

The sealing portion and the moving stopper each have a first projection and a second projection,

And the movable stopper extends vertically in a direction away from the central region of the base.
The method of claim 12,

The first protrusion and the second protrusion are formed in a band along the ring shape of the coupling to be in contact with an outer circumferential surface and an inner circumferential surface defining one pipe around one side inlet of the gasket or around the other side of the inlet. gasket.
According to claim 1,

When receiving the two opposing pipes in the coupling,

The seal and the moving stopper contact the ends on the two opposing pipes;

The gripping stopper is inserted between the ends to contact the ends.
According to claim 1,

When receiving the two opposing pipes in the coupling, along the ring shape of the coupling,

And a moving stopper around one inlet of the gasket and a moving stopper around the other inlet contact each other between the ends or spaced apart from each other.
According to claim 1,

When receiving the two opposing pipes in the coupling,

The base is compressed by the compression force of the coupling,

The seal is pressed by the two opposing pipes and rotated relative to the base to move towards the base,

And the movable stopper is pushed by the two opposing pipes and moves toward the central region of the base along the movement of the seal.