KR102072489B1 - Coupling Assembly Used for Fixing Pipe - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe assembly coupling assembly configured to improve a fastening structure attached to a connecting portion of a pipe so as to perform pipe joints efficiently.
The present invention relates to a coupling assembly for mutually binding a pipe installed to induce fluid flow, comprising: a coupling mounted on a connection portion of both pipes, a rubber sleeve interposed inside the coupling, and And a binding unit disposed at both ends and simultaneously mounted on an outer circumferential surface of the pipe, wherein the coupling is configured to act upon pressing force by a rotation operation of a casing projecting outward from the body and a fastening bolt mounted to the casing. The inner diameter portion of the rubber sleeve is formed with a curved surface that is in close contact with the outer peripheral surface of both pipes, the binding unit is a first and second fixing ring which is fastened by bolts and nuts are fitted along the longitudinal direction of both pipes It is made up.
Accordingly, the pipes to be connected to each other may be first fixed by a coupling in which a rubber sleeve is inserted and a press-in protrusion formed in the coupling, and at the same time, the pipes may be secondly fixed by using a binding unit installed at both ends of the coupling. Since it is configured so that the pressure of the fluid flowing along the pipe, it can have the effect of reliably preventing the leakage or separation that can occur at the connection portion of the pipe.

Description

Coupling Assembly Used for Fixing Pipe}

The present invention relates to a structure for mutually binding pipes used for transporting fluid, and more particularly, a pipe binding configured to efficiently perform pipe joints by improving a fastening structure mounted at a connection part of a pipe. For a coupling assembly.

In general, construction structures such as industrial plants, buildings, or apartments require pipes made in various forms for transporting domestic sewage as well as fluids such as water and gas necessary for real life. Because of the limitation, piping work is performed to bind the ends of the pipes to each other.

When connecting pipes, the ends of both pipes are joined together by welding, or the rubber packing is inserted between the flanges formed at the ends of the pipes, and then the bolts and nuts are fastened together. For example, a pipe connecting mechanism or a coupling is attached to the outer diameter of the pipe to bind the ends of the pipe to each other.

However, expansion and contraction occur due to changes in ambient temperature or pressure of the fluid itself, and the pipe is often deformed and detached due to temperature difference such as thermal expansion as well as external impact.

For example, when installing a slip joint having elasticity in the axial direction of the pipe in order to minimize the deformation of the pipe to the minimum, there is a weak point to vibration or impact, and a ball joint freely rotating in any direction may cause vibration in the horizontal direction. And when the vibration is not properly exhibit the buffer force.

In connection with such pipe joints, in the "coupling for pipe joints" disclosed in Korean Patent No. 0291654, several projections are attached to the joint portion of the binding passage formed in the cylindrical socket to maintain a connection state, but fluidity due to gaps. This occurs and there is a problem that can not be fixed in a straight state.

In addition, many publications including Korean Patent Nos. 0941883 and 0976588 provide a "pipe fitting" which prevents the structure from twisting when connecting pipes and forms a double end of the packing to maintain airtightness. Is disclosed.

However, since these structures all require a large tightening force of the screw, the workability is very inferior, and the cost is inevitably expensive because it is composed by combining a plurality of components.

On the other hand, air is retained inside the pipe when the pump is pressurized in a water purification plant or drainage, and the valve is installed in several places to discharge such air, but water shock occurs when the water is not discharged. As a result, many problems are caused by pipe breakage or breakage.

In addition, when joining pipes and pipes, butt or socket welding or flanges are welded to the pipes, the pipe ends are expanded to be assembled into sockets, or the pipe ends are formed at 90 ° to use split flanges. Even though the assembly is performed, there is a problem that a separate working environment is not very good as well as a separate equipment.

Korean Patent Laid-Open Publication No. 2000-0013904 (published on March 6, 2000)-A coupling for a pipe joint. Registered Patent No. 0291654 (registered Mar. 14, 2001)-Coupling for pipe joints. Registered Patent No. 0941883 (2010.02.04 registration)-Piping connector. Registered Patent No. 0976588 (registered Aug. 11, 2010)-Piping connector. Patent No. 1580154 (registered Dec. 18, 2015)-Piping repair coupling with elastic coupling.

The present invention is to solve the conventional problems as described above, the object of the present invention is to be able to bind the pipe without a separate processing by the coupling, as well as to ensure that the coupling is securely fixed so as not to break. The present invention provides a coupling assembly for pipe binding that can sufficiently withstand the high pressure generated in the pipe.

That is, the present invention is to prevent the pipe from being separated when receiving a water shock or momentary pressure by binding the pipe and the pipe by the coupling with the primary indentation projections and then installing two or more secondary fixing rings for prevention of binding. To provide a coupling assembly for pipe binding.

The present invention for achieving the above object is a coupling assembly for mutually binding a pipe installed to induce fluid flow, a coupling mounted on the connection portion of both pipes, and a rubber interposed inside the coupling And a coupling unit disposed at both ends of the coupling and mounted on the outer circumferential surface of the pipe, wherein the coupling is formed with a casing which protrudes outward from the body to form a fastening bolt mounted to the casing. At the same time, the pressing force is applied by the rotation operation, and press-fitting protrusions are formed at both ends of the coupling, respectively, and are bent so as to be in close contact with the outer circumferential surface of the pipe. A curved surface with an incision groove is formed and at both ends of the curved surface are divided by divided grooves. Being separated wing pieces formed, the coupling unit is configured to include first and second retaining ring which is mounted on both the pipe to be inserted into the bolt and nut fastening in the longitudinal direction of the two pipes.

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According to the structural features described above, the pipes to be connected to each other are first fixed by a coupling in which a rubber sleeve is inserted and a press-in protrusion formed in the coupling, and then the bindings are installed at both ends of the coupling. Since the unit is configured to be secondarily fixed, it is possible to reliably prevent leakage or detachment that may occur at the connecting portion of the pipe due to an increase in the pressure of the fluid flowing along the pipe.

1 is a view showing an example of a coupling binding structure of a general pipe,
2 is an external view showing an installation state of a coupling assembly for pipe binding according to the present invention;
3 is a side configuration diagram of FIG. 2;
4 is a cross-sectional configuration diagram of the entire assembled state.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, but specific structures and functions of the present invention are not limited to the embodiments described in the specification because they illustrate only one configuration example.

First, an example of a typical structure used to connect pipes to each other will be described, and after the problem is derived, the construction and effect of the present invention will be described below.

As shown in Fig. 1, a coupling 4 made of a stainless steel is usually made around the rubber band 3 in a state in which the rubber band 3 is inserted into the connecting portion of both pipes 1 and 2. After the fitting is fixed, by tightening the bolt (5) mounted on the coupling (4) so that the rubber band (3) is in close contact with both pipes (1, 2) to achieve the binding.

However, in the hose band structure which normally uses the rubber band 3 and the coupling 4, since the rubber band 3 is forcibly inserted into the pipes 1 and 2, the rubber inserted in one pipe 1 When assembling the other pipe (2) toward the band (3) to open the rubber band (3) by hand to connect the pipe (2) because the assembly work is inconvenient and wastes a lot of time, poor construction.

Moreover, when the bolt 5 is tightened to press the coupling 4, a phenomenon in which pressure is biased due to a machining error of both the pipes 1 and 2 itself occurs, and thus the airtightness between the pipes 1 and 2 is caused. Due to this halting, accidents due to leakage of fluid or separation are frequently generated.

2 to 4 are views for explaining the coupling assembly for pipe binding according to the present invention. As shown in these figures, the present invention provides a coupling 20 fitted to the connecting portions of both pipes 10A and 10B and a rubber sleeve 30 disposed in the inner diameter portion of the coupling 20, and the coupler. It comprises a binding unit 40 is mounted to both ends of the ring 20.

The coupling 20 has a pair of casing (21a, 21b) protruding outward from the body made of stainless material, the fastening bolt 22 is mounted on these casing (21a, 21b) is applied pressure It is configured to work.

In addition, both end portions of the body constituting the coupling 20 are bent so as to be inclined toward the inner diameter side when the plurality of indentation protrusions 23 in close contact with the outer circumferential surfaces of the pipes 10A and 10B are tightened with the fastening bolt 22. It is molded.

The rubber sleeve 30 may be made of a material having excellent elasticity and disposed on the inner diameter side of the coupling 20. That is, the inner diameter portion of the rubber sleeve 30 is formed with a plurality of curved surfaces 31 and cutting grooves 34, which are in contact with the outer circumferential surfaces of the pipes 10A and 10B, respectively, and divided grooves 32 at both ends thereof. The blade piece 33 divided by is formed so as to incline inward.

When the rubber sleeve 30 is pressurized by the cutting grooves 34 formed in the curved surface 31 of the rubber sleeve 30, a double sealing effect can be expected.

In addition, the binding unit 40 consists of first and second fixing rings 41A and 41B, respectively, and is welded to the outer circumferential surfaces of the pipes 10A and 10B so as to be positioned at both ends with the coupling 20 therebetween. Processed and integrally mounted, a through hole 42 is formed in each of the fixing rings 41A and 41B so that the bolt 43a and the nut 43b can be fitted and fastened along the longitudinal direction of the pipes 10A and 10B. Consists of.

In the case of the bolt 43a and the nut 43b, a material similar to the material of the pipes 10A and 10B may be applied. The austenitic STS304, STS316, and STS316L having different components may be dissolved by heat treatment, or the carbon and mechanical Martensitic 410J1, 420J1, and 420J2 having excellent properties can be heat-treated and used (see ingredient comparison table).

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 Types and Symbols  Chemical composition (C) Strength (N㎡) or more Tensile Strength (N㎡) or more Hardness (Hs) Remarks  STS304  Less than 0.08 205 520 187 and below  STS316  Less than 0.08 205 520 187 and below  STS316L  Less than 0.030 175 480 187 and below  STS410J1  0.08 to 0.18 490 690 192 or more  STS420J1  0.16 to 0.25 440 640 192 or more  STS420J2  0.26-0.40 540 740 Over 217

According to the present invention having the above-described configuration, the pipes 10A and 10B are respectively inserted into both sides of the coupling 20 in which the rubber sleeve 30 is assembled in advance, and at the same time, up to the central portion of the rubber sleeve 30. By pushing in, the connection of both pipes 10A, 10B is located at the center of the coupling 20.

Subsequently, as the fastening bolts 22 mounted on the casings 21a and 21b of the coupling 20 are tightened, the coupling 20 presses the connecting portions of both pipes 10A and 10B. At the same time, the indentation protrusions 23 formed on both sides of the body constituting the coupling 20 are strongly adhered to the outer circumferential surfaces of the respective pipes 10A and 10B to be fixed primarily.

Next, the first and second fixing rings 41A and 41B, which are assembled to the respective pipes 10A and 10B, are integrally welded on both sides of the coupling 20, and then the respective fixing rings 41A and 41B. By fitting the bolt (43a) to the nut (43b) through the through hole 42 of the can be fixed secondary along the longitudinal direction of the pipe (10A, 10B).

Accordingly, since the primary fixing by the coupling 20 and the secondary fixing by the binding unit 40 can be made reliably, the pipe (by increasing the pressure of the fluid flowing along both pipes 10A and 10B) It is possible to prevent leakage or separation that may occur at the connecting portions of 10A and 10B).

As described above, according to the pipe coupling coupling assembly according to the present invention, the pipes to be connected to each other can be first fixed by the coupling into which the rubber sleeve is inserted and the indentation protrusion formed on the coupling. Since it is configured to be fixed secondary by using a binding unit provided at both ends of the coupling, it is possible to more reliably prevent leakage or separation that may occur at the connection portion of the pipe by increasing the pressure of the fluid flowing along the pipe It can have an effect.

The technical problem of the present invention is achieved by the technical configuration as described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto but by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the technical spirit and equivalents of the claims to be described below.

10 A, 10 B: pipe 20: coupling
21a, 21b: casing 22: tightening bolt
23: indentation protrusion 30: rubber sleeve
31: curved surface 32: split groove
33: wing 34: incision groove
40: binding unit 41A: first fixing ring
41B: second retaining ring 42: through hole
43a: bolt 43b: nut

Claims (4)

A coupling assembly for mutually binding pipes installed to induce fluid flow,
A coupling 20 mounted on the connecting portion of both pipes 10A and 10B, a rubber sleeve 30 interposed inside the coupling, and opposite ends of the coupling, respectively, on the outer peripheral surface of the pipe. It is configured to include a binding unit 40 is mounted,
The coupling 20 has casings 21a and 21b protruding outward from the body, and is configured to act as a pressing force by a rotation operation of the fastening bolt 22 mounted to the casing. Press-fit protrusions 23 are formed at both ends, and are bent to close to the outer circumferential surfaces of the pipes 10A and 10B.
An inner diameter portion of the rubber sleeve 30 is formed with a curved surface 31 having a cutting groove 34 to be in close contact with the outer circumferential surfaces of both pipes 10A and 10B, and is divided at both ends of the curved surface 31. The wing pieces 33 divided by the grooves 32 are formed, respectively,
The binding unit 40 has first and second fixing rings respectively mounted to both pipes 10A and 10B so that bolts 43a and nuts 43b are fitted into and fastened along the length directions of both pipes 10A and 10B. A coupling assembly for pipe binding, comprising (41A, 41B). delete delete delete

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