KR102226048B1 - Connector assembly for piping - Google Patents

Abstract

Disclosed is a pipe joint assembly for piping. According to the present invention, the pipe joint assembly for piping, which is pressed and fastened in a state of connecting and fixing the side of a pipe joint portion, comprises: a pipe joint body with a hollow inside; a compression tightening portion formed in a state of forming an expanded peripheral portion to match the compression fastening on the longitudinal end side of the pipe joint body and having a ring groove on the inside thereof; and a rubber ring disposed on the ring groove side of the compression tightening portion and having an extended seal portion and a seal improving portion for improving the sealing force of the pipe joint portion.

Description

Pipe fitting assembly for piping {CONNECTOR ASSEMBLY FOR PIPING}

The present invention relates to a pipe fitting assembly for piping.

Piping work, as well-known, is to form a predetermined pipe section through which various fluids flow through a series of processes of bending and connecting pipe bodies.

Most of these piping works are performed by connecting and fixing the joints of the pipes with pipe joints by means of a compression and fastening operation, and a stable sealing state of the pipe joints is required to secure the quality and construction reliability of the pipe construction.

Therefore, it is important to proceed with the operation in a state in which the seal on the joint side can be kept as stable as possible when tightening the end circumference side of the pipe joint by pressing and fastening the pipe joint portion with the compression clamping force.

In this way, in order to secure a stable sealing force of the pipe joint, the effect can be further increased by improving the shape or structure of the seal rubber ring installed inside the pipe joint.

Patent Registration No. 10-1375487

The present invention was devised to solve the conventional problems as described above,

An object of the present invention is to provide a pipe fitting assembly formed to further increase the seal stability and seal reliability of the pipe joint.

In order to realize the object of the present invention as described above,

As a pipe fitting assembly that is compressed and fastened while connecting and fixing the side of the pipe joint,

A pipe fitting body with a hollow inside;

A compression tightening unit formed in a state of forming an enlarged circumferential portion corresponding to the compression connection at the longitudinal end side of the pipe fitting body and having a ring groove therein; And

A rubber ring disposed on the side of the ring groove of the compression tightening portion and having an extended seal portion and a seal enhancement portion for improving the sealing force of the pipe joint portion;

It provides a pipe fitting assembly comprising a.

In the present invention, a rubber ring for sealing is arranged on the side of the crimping joint of the pipe fitting body, so that the pipe joint can be connected and fixed in a sealed state by a crimping and fastening operation, and in particular, the rubber ring is a pipe joint when crimping and fastening. By providing an extended seal portion and a seal enhancement portion formed to improve the sealing force of the portion, it is possible to further increase the seal stability and reliability of the pipe joint.

1 is a view schematically showing the overall structure of a pipe fitting assembly according to an embodiment of the present invention.
2 to 12 are views for explaining a detailed structure and operation of the pipe fitting assembly according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described on the basis of the accompanying drawings.

Embodiments of the present invention are described within the scope of the present invention can be practiced by those with average knowledge in the art. Accordingly, since the embodiments of the present invention can be modified in various different forms, the claims of the present invention are not limited to the embodiments described below.

1 is a view schematically showing the overall structure of a pipe fitting assembly according to an embodiment of the present invention, FIGS. 2 to 12 are views for explaining the detailed structure and operation, referring to FIGS. 1 to 9 , The pipe fitting assembly for piping according to an embodiment of the present invention includes a pipe fitting body 10, a compression clamping portion 20, and a rubber ring 30.

The pipe fitting body 10 has a pipe shape having a hollow inside as shown in FIGS. 1 to 2, and is formed to connect between the joints of the pipe body (P) by fitting.

The pipe fitting body 10 is not limited to a pipe shape extended in a "-" shape, and although not shown in the drawings, for example, "L It may be formed to have a joint-shaped structure extending in a "ruler" or "T" shape.

The material of the pipe fitting body 10 may be selected from metal or non-ferrous metal, and it is particularly preferable to select and use from materials that can secure satisfactory durability and corrosion resistance.

The crimping tightening part 20 is formed on the longitudinal end side of the pipe fitting body 10, and is pressed by the crimping tightening force while being inserted so that the circumferential side of the pipe fitting body 10 is received, and the circumferential part of the pipe body (P) end It is formed to hold the side in a crimped fastening state.

The compression tightening portion 20 has a ring groove 22 formed inside the longitudinal end of the pipe fitting body 10 as shown in FIGS. 1 to 2, and the circumferential side of the ring groove 22 is the pipe fitting body. It is formed on the side of the tube fitting body 10 so as to form an enlarged diameter outside the end circumference of (10).

That is, the ring groove 22 is formed to provide a space for the groove portion of a size and shape that can be installed in a state in which the rubber ring 30, which will be described later, maintains the ring's original shape before the compression and fastening operation of the compression fastener 20 do.

The compression tightening portion 20 may be formed on both ends of the pipe fitting body 10 in the longitudinal direction as shown in FIG. 1, or may be selectively formed on only one end side according to other required conditions.

In addition, the compression tightening unit 20 may be formed to further have an interference surface 24 as in FIG. 3.

The interference surface 24 is formed to form a surface interference structure capable of preventing slip of the rubber ring 30, which will be described later, on the inner circumferential side of the circumferential portion of the ring groove 22.

That is, the interference surface 24 may be formed to form a surface structure in which a plurality of interference protrusions 24a are formed on the inner peripheral surface side of the ring groove 22 as shown in FIG. 3.

At this time, the interference protrusions 24a are protrusions that can suppress the phenomenon in which the rubber ring 30 disposed on the side of the ring groove 22 abnormally flows (rotates) along the extending direction of the groove circumference through surface interference (friction). And it is preferably formed to have an arrangement.

For example, the interference protrusions 24a are spaced apart from each other along the groove circumference of the ring groove 22 as shown in FIG. 3 and are formed at a plurality of points, and protrude extending in a direction forming an angle with the extending direction of the groove circumference. It can be formed as

The interference protrusion 24a structure can more stably suppress a phenomenon in which the rubber ring 30 to be described later flows in the extending direction of the groove circumference portion while being fitted to the ring groove 22 side by surface interference action.

On the other hand, the rubber ring 30 is formed to enable a stable sealing treatment of the joint portion of the pipe body (P) in connection with the compression tightening portion 20 side.

In particular, the rubber ring 30 is formed to have a ring structure consistent with securing and improving the seal stability of the joint portion of the pipe body (P), and to meet this, the extended seal portion 32 and the seal are improved as shown in FIGS. 2 and 4. It is made with a section 34.

The rubber ring 30 has a circular ring circumference as shown in FIG. 4 in the form of a ring for a typical fluid seal.

The material of the rubber ring 30 may be selected and used from materials (eg, urethane, silicone) having sealing properties that meet the purpose of fluid sealing, in addition to rubber materials.

The rubber ring 30 is fitted into the ring groove 22 side of the crimping fastening portion 20 of the pipe fitting body 10 side, as shown in FIG. 2, so that the outer circumferential side of the ring is in contact with the inner circumferential side of the groove, and the compression tightening portion 20 ) It is set in an arrangement in which the inner circumferential side of the ring can contact the end circumference side of the tube body (P) fitted inside.

In addition, as shown in FIG. 2, a conventional metal ring R is disposed on the side of the ring groove 22 to generate a compression fastening fixing force and spaced apart from the rubber ring 30 side.

Then, as shown in FIG. 5, when the joint portion of the pipe body (P) is connected to the pipe joint body (10), when the compression and fastening operation is performed in a conventional manner using a separate compression fastener (M), a metal ring ( R) serves to hold the end side of the pipe body (P) in a compressed state, and the rubber ring 30 may serve to seal the gap at the joint.

On the other hand, the extended seal portion 32 and the seal enhancement portion 34 are integrally formed on the rubber ring 30 side in a state having a structure consistent with securing and improving the seal stability of the joint portion of the pipe body P.

The extension seal part 32 is pressed together with the rubber ring 30 side in connection with the compression and fastening operation of the joint part of the pipe body (P) so that it is possible to provide a volume and area capable of additional sealing treatment on the gap side of the circumferential part of the joint. Is formed.

As shown in FIGS. 2, 4, and 6, the extension seal part 32 protrudes from one of the left and right sides of the rubber ring 30 toward the side and extends in a ring shape. ).

That is, the extended sealing surface 32a is formed in a state of forming the inner and outer circumferential surfaces of the extended sealing portion 32 protruding in a ring-shaped state toward the side of the rubber ring 30.

The material of the extended seal part 32 may be formed in a state where the same material as that of the rubber ring 30 is selected and used, and is integrally molded when the rubber ring 30 is formed.

When the extension seal part 32 extends from the rubber ring 30 side to form a ring shape, it is preferable that the diameter of the inner circumference side gradually increases as shown in FIG. 6.

Then, when setting the connection by inserting the pipe body (P) with the rubber ring (30) set on the ring groove (22) side of the compression tightening portion (20), the extended sealing surface (32a) side and the pipe body ( P) The phenomenon that the shape or setting position of the soft rubber ring 30 is abnormally deformed (changed) by contact (friction) between the outer surfaces can be suppressed as much as possible.

As shown in FIG. 5, the extension seal part 32 is compressed by a crimping fastener (M) in a state where the pipe fitting body 10 is fitted in a direction connecting the joints between the pipe fittings (P). When crimping, it is possible to provide an expanded seal area while being pressed together with the rubber ring 30 from the gap side of the joint.

In other words, when compression is fastened, not only the inner and outer circumferential surfaces of the rubber ring 30, but also the seal surfaces 32a on the inner and outer circumferential sides of the extended seal unit 32 are in close contact with the inner and outer circumferential sides of the joint gap, thereby further expanding the seal. Since the area is provided, the sealing force of the joint portion of the pipe body P can be further secured due to this.

In addition, a seal guide groove 32b may be formed on the side of the extended seal part 32 as shown in FIG. 7.

In the seal guide groove (32b), after the joint part of the pipe body (P) is connected in a compression-fastened state by the pipe joint body (10), the fluid inside the pipe (P1) of the pipe body (P) through the contact gap around the joint part It provides a groove structure in which the phenomenon of loss to the outside can be suppressed.

As shown in FIG. 7, the seal guide groove 32b may be formed in the form of a groove formed from the outside to the inside with the two extended sealing surfaces 32a of the extended seal part 32 interposed therebetween.

When the seal guide groove 32b extends from the inside of the groove toward the open part, it extends obliquely toward the two extended sealing surfaces 32a, and has a groove shape in which the open part gradually increases (for example, "V-shape"). It can be formed to have.

These seal guide grooves (32b) are, after the joint portion of the pipe body (P) is sealed by the rubber ring 30 and the extended seal portion 32, even if the fluid inside the pipe (P1) flows into the gap in the circumference of the joint. It is possible to prevent leakage as much as possible by inducing it to gather inside the groove.

In addition, the seal guide groove 32b may be operated in a state in which the opening side is elastically opened in the up and down directions by the fluid pressure flowing into the inside of the groove. Therefore, the two extended sealing surfaces 32a can be made to achieve a stable close contact state more consistent with securing and improving the sealing force.

According to the action of the seal guide groove 32b, even if an excessive fluid pressure acts on the inner side of the pipe line P1, a stable sealing state can be maintained.

The seal improving portion 34 has a structure corresponding to the improvement of the sealing force of the extended seal portion 32, and is provided inside the extended seal portion 32 in a built-in type.

The seal enhancement portion 34 is formed to further improve the seal sealing force inside the extended seal portion 32 when a compression-fastening operation of the joint portion of the pipe body P is performed.

The seal enhancement unit 34 includes an expansion space 34a formed inside the extended seal unit 32 as shown in FIGS. 6 to 8, and an expansion fluid filled in the expansion space 34a so as to generate an expansion force. It is made with (34b).

The expansion space 34a may be formed between the extended sealing surfaces 32a on the inner and outer circumferential sides along the ring-shaped circumference of the extended seal 32 as shown in FIGS. 6 and 7.

The expansion fluid 34b may be used among air, gas, and oil, and when the side of the extension seal 32 is pressed by a compression and fastening operation as shown in FIG. 8, the seal adhesion of the extended seal surfaces 32a is secured and Filled in the expansion space (34a) side in a state that can generate an elastic expansion force in the corresponding direction.

That is, when a physical external pressure acts on the extended seal part 32 side as described above, the seal improving part 34 is formed so that an expansion force can be generated in the expansion space 34a side.

This seal enhancement part 34 generates a resilient expansion force inside the extended seal part 32 as shown in FIG. 8 in connection with it during the compression and fastening operation of the joint part of the pipe body (P), and thereby the extended seal part 32 The extended sealing surface (32a) of the joint can be made more elastically close to the inner and outer circumferential side of the gap around the joint.

In particular, according to the structure and action of the seal improving part 34, even if some of the circumferential parts of the joint part of the pipe body P are pressed in an uneven state during the compression and fastening operation, the extension seal part 32 is circumferentially due to the internal expansion force. It can be sealed in a state where the minor gaps are evenly filled.

Therefore, the seal improving part 34 can further increase the sealing force by the extended sealing part 32 when the pipe body P joint is compressed and fastened, thereby ensuring satisfactory seal stability and reliability. .

And, the expansion space (34a) may be formed by a separate pocket (34c) inside the extended seal portion (32), for example, as in Figure 9, this pocket (34c) is the fluid for expansion (34b) It is formed to be able to keep the airtightness of.

The pocket-type expansion space 34a can prevent and prevent as much as possible a phenomenon in which the expansion fluid 34b filled in the inside is lost to the outside due to deformation or damage of the extension seal part 32.

Referring to FIG. 10, the seal enhancement unit 32 may be further provided with a contact hole 36.

The close contact 36 has a structure that can further increase the seal adhesion force of the extended seal unit 32 in connection with the compression and fastening operation, and is disposed inside the expansion space 34a.

That is, the contact hole 36 has a metal ring shape corresponding to the circumferential side of the expansion space 34a of the extended seal part 32, as shown in FIG. 10, and the inner circumferential circumference of the space from the inside of the expansion space 34a. It can be placed in a state surrounding the side.

The contact hole 36 may be set and formed so as to be disposed inside the expansion space 34a by, for example, an insert molding method when the rubber ring 30 is formed.

The material of the contact hole 36 is metal, but it is preferable to select and use metals that are soft and have low shape resilience, such as copper, for maintaining and securing adhesion.

Such a close contact 36 is pressed when the joint portion of the pipe body (P) is crimped, and in particular, the extended sealing surface (32a) side of the inner circumferential surface side of the extended sealing unit 32 is more stably adhered to the outer circumferential side of the pipe body (P). It can play a role of holding it to achieve the sealing state.

11 to 12, the rubber ring 30 may further include a leak inducing part 38.

The water leakage induction part 38 is formed to provide a groove structure in which water leakage can be induced through the contact gap of the rubber ring 30 according to whether or not the joint part of the pipe body P is compressed.

That is, the leakage induction part 38 is formed with a leakage induction groove 38a formed on the inner circumferential side of the ring of the rubber ring 30 as shown in FIG. 11.

The leak induction groove 38a has a groove shape that is dug from the inner peripheral surface side of the rubber ring 30 toward the outer peripheral surface side, and may be formed at one or more points along the inner peripheral surface circumference of the ring.

This leakage induction part 38 is a work to test the internal pressure of the pipe (P1) by supplying water to the inside of the pipe (P1) at a certain pressure in order to check whether the joints of the pipe body (P) are compressed and fastened during the construction of the pipe line. When proceeding, the non-compressively fastened point of the joint may allow leakage of water to the outside of the pipe (P1) through the leakage guide groove (38a) on the inner peripheral surface of the rubber ring (30).

Therefore, the leak inducing part 38 allows the operator to easily visually check whether it is compressed or non-compressed according to the leak condition of the pipe body (P) joints during the internal pressure test work of the pipe (P1), further improving piping work efficiency. And reliability can be ensured.

Therefore, in the present invention, a rubber ring 30 is installed inside the crimping fastening portion 20 of the pipe fitting body 10, and this rubber ring 30 is capable of securing and improving the sealing force of the pipe joint P. As it is formed to have a ring structure, satisfactory seal stability and seal reliability can be expected during piping line construction.

10: pipe fitting body 20: crimping joint
30: rubber ring 32: extended seal portion
34: seal enhancement part P: tube

Claims (12)

As a pipe fitting assembly that is compressed and fastened while connecting and fixing the side of the pipe joint,
A pipe fitting body with a hollow inside;
A compression tightening unit formed in a state of forming an enlarged circumferential portion corresponding to the compression connection at the longitudinal end side of the pipe fitting body and having a ring groove therein; And
A rubber ring disposed on the side of the ring groove of the compression tightening portion and having an extended seal portion and a seal enhancement portion for improving the sealing force of the pipe joint portion;
Including,
The seal improving part of the rubber ring,
An expansion space formed inside the extension seal part, an expansion fluid filled in the expansion space side so as to generate an expansion force, and a ring shape corresponding to the circumference of the expansion space, and the space inside the expansion space Pipe fitting assembly comprising a contact hole disposed in a state surrounding the inner circumferential side of the pipe. The method according to claim 1,
The compression tightening unit further includes an interference surface,
The interference surface,
Pipe fitting assembly formed to achieve a surface state in which a plurality of interference protrusions are arranged on the inner circumferential side of the ring groove. The method according to claim 2,
The interference protrusions,
A pipe fitting assembly for piping, characterized in that the ring grooves are spaced apart from each other along the extending direction of the inner circumferential surface and are protruded at a plurality of points. The method according to claim 1,
The extended seal portion of the rubber ring,
A pipe fitting for a pipe having an extended sealing surface and protruding from one of the left and right sides of the rubber ring in a ring shape and extending in a ring shape to form an inner and outer circumferential surface of the rubber ring, respectively. assembly. The method of claim 4,
The extended seal part,
Pipe fitting assembly, characterized in that when extending toward the side of the rubber ring in a ring-shaped state, the diameter of the circumferential portion of the sealing surface on the inner circumferential side of the extended sealing surface is gradually increased. The method of claim 4,
The extended seal portion further includes a seal guide groove,
The seal guide groove,
A pipe fitting assembly for a pipe formed in the form of a groove formed from the outside to the inside with the two extended sealing surfaces interposed therebetween at the peripheral portion of the extended seal portion. delete The method according to claim 1,
The expansion space of the seal enhancement unit,
A pipe fitting assembly formed in a state of forming a ring shape along a ring-shaped circumference of the extended seal portion. The method according to claim 1,
The fluid for expansion of the seal enhancement unit,
A pipe fitting assembly for piping that is filled in the expansion space side in a state where any one of air, gas, and oil is selected and used, and an expansion force can be generated when the side of the extended seal is pressed. The method according to claim 1,
The seal improving unit further includes a pocket corresponding to the expansion space side,
The pocket,
A pipe fitting assembly in which the fluid for expansion is contained to enable an expansion action and is disposed inside the expansion space. delete The method according to claim 1,
The rubber ring further includes a leak induction part,
The leakage induction part,
A leak guide groove is provided, and the leak guide groove is formed in the form of a groove dug from the inner circumferential side of the rubber ring toward the outer circumferential side, and is formed at one or more points along the ring circumference. assembly.

Images