KR102319277B1 - A valve union - Google Patents

Abstract

A valve joint is disclosed. The valve joint pipe according to an embodiment of the present invention includes an exterior in which a first joint flange bent outwardly is formed at one end, and a first connection flange bent outwardly is formed in the other end; One end is inserted into the outer tube, the other end is formed with a second joint flange bent outward, the outer peripheral surface is formed with a protrusion, the inner tube spaced apart from the inner wall of the exterior; a connecting portion having a pressing portion coupled to the outer wall of the inner tube, and a second connecting flange protruding from the pressing portion in a radial direction of the exterior; a stopper protruding inward from the inner wall of the exterior; a sealing interposed in a space between the pressing part and the stopper; and a hollow disc shape, the thickness corresponding to the distance between the outer tube and the inner tube, and a plurality of first grooves spaced apart from each other and recessed inward along the radial direction from the outer circumferential surface are formed, the first groove The region where the additional portion is not formed is welded to the inner wall of the outer tube to limit the radial movement of the inner tube, while forming a passage through which water permeating between the outer tube and the inner tube moves, and is depressed inward along the radial direction from the inner circumferential surface and a separation preventing part formed and having one or more second grooves corresponding to the protrusions. According to this, as a valve joint pipe used to connect a pipe and a pipe of two lines having a flange, one end of the inner pipe is inserted inside the exterior, expansion and contraction is allowed, and the valve joint pipe prevents leakage while preventing the separation of the two pipes. is initiated.

Description

valve joint pipe {A VALVE UNION}

The present invention relates to a valve joint pipe, and more particularly, to a valve joint pipe used when connecting a pipe and a pipe of two lines having a flange, wherein one end of the inner pipe is inserted inside the exterior, expansion and contraction is allowed, and the expansion and contraction of the two pipes is allowed It relates to a valve joint pipe that prevents leakage while preventing leakage.

In general, water used for various purposes, such as industrial water, simple water supply, power source water, hot spring water, water supply pressurization, high-rise building water supply, agricultural water, sanitary water supply, and swimming pool water supply, usually passes through the intake pond, water purification plant, and drainage pond. It is then fed through a pipeline. In most pipelines, valve joint pipes are installed. This valve joint pipe is also called expansion joint pipe, flow flange, etc.

Such a valve joint pipe has flanges formed on both sides thereof, and the flanges of the valve joint pipe are coupled and fixed with bolts and nuts to the flanges of both pipes, and a sealing is interposed therebetween to maintain airtightness.

In general, valves used for water supply, sewerage, and plant piping have low airtightness in the process of widening or narrowing between flanges due to external factors such as contraction and tension occurring on the piping due to maintenance and temperature differences between the building and the subway. It weakens and even leaks into the flange joint, and the weakest part of the joint eventually bursts due to the flow of fluid.

Accordingly, the valve and the valve joint pipe are installed together in such a pipe to allow movement in the axial direction connecting the pipes to absorb expansion due to heat or pressure or vibration and shock caused by a fluid.

However, in the case of valve joint pipes where the outer and inner tubes are spaced apart from each other, even though the sealing is interposed, due to external environmental factors and the space between the inner tube and the outer tube, leakage space is generated due to the movement of the inner tube and the outer tube in each radial direction. There is a leak problem.

In addition, there is a problem in that the inner tube is separated from the exterior due to external environmental factors.

Republic of Korea Patent Publication No. 10-2017-0047015 Republic of Korea Patent Publication No. 10-2000094 Japanese Patent Laid-Open No. Hei 09-072470

The valve joint pipe according to an embodiment of the present invention is a valve joint pipe used when connecting a pipe and a pipe of two lines having a flange. An object of the present invention is to provide a valve joint pipe that prevents leakage while preventing leakage.

The problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

The valve joint pipe according to an embodiment of the present invention, an outwardly bent first joint flange is formed at one end, the outer appearance is formed with a first connecting flange bent outwardly at the other end; One end is inserted into the outer tube, the other end is formed with a second joint flange bent outward, the outer peripheral surface is formed with a protrusion, the inner tube is spaced apart from the inner wall of the exterior; a connecting portion having a pressing portion coupled to the outer wall of the inner tube, and a second connecting flange protruding from the pressing portion in a radial direction of the exterior; a stopper protruding inward from the inner wall of the exterior; a sealing interposed in a space between the pressing part and the stopper; And it is formed in the shape of a hollow disk, and the thickness corresponds to the distance between the outer tube and the inner tube, and is recessed inward along the radial direction from the outer circumferential surface, and a plurality of first grooves spaced apart from each other are formed, the first groove The region where the additional portion is not formed is welded to the inner wall of the outer tube to limit the radial movement of the inner tube, while forming a passage through which water permeating between the outer tube and the inner tube moves, and is depressed inward along the radial direction from the inner circumferential surface and a separation preventing part formed and having one or more second grooves corresponding to the protrusions.

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In addition, one or more second grooves may be formed on an inner peripheral surface of the separation preventing part, and a protrusion corresponding to the second groove may be formed on an outer peripheral surface of the inner tube.

In addition, the separation preventing portion and the protrusion may be disposed to be spaced apart from each other along the longitudinal direction of the exterior.

In addition, one end of the inner tube may be inserted into the outer tube by rotating at a predetermined angle after the protrusion passes through the second groove portion.

According to the embodiments of the present invention, there are at least the following effects.

In the valve joint pipe according to an embodiment of the present invention, one end of the inner pipe is inserted into the exterior and expansion and contraction is allowed, so external factors such as contraction and tension occurring on the pipe due to the temperature difference between the winter and winter seasons and maintenance. In spite of this, it can absorb expansion due to heat or pressure or vibration and shock caused by fluid.

In addition, even when the outer tube and the inner tube are spaced apart from each other, there is an effect that water leakage is prevented by limiting the movement in the radial direction.

In addition, it is possible to prevent the inner tube from being separated from the outer tube in the process of changing the length of the inner tube inserted into the exterior due to certain factors.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a schematic perspective view of a valve joint pipe according to an embodiment of the present invention;
2 is a cross-sectional view of a valve joint pipe according to an embodiment of the present invention;
3 is a perspective view / front view of a separation preventing part of a valve joint pipe according to an embodiment of the present invention;
4 is a cross-sectional view of a main part of a valve joint pipe according to an embodiment of the present invention;
5 to 8 are views for explaining a process of inserting the inner tube of the valve joint tube according to an embodiment of the present invention.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention, and a method of achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the drawings. However, the present invention is not limited to the embodiments disclosed below, it can be implemented in various forms, and it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

Before the description, the terms described in the detailed description will be described. In the following embodiments, terms such as first, second, etc. are used for the purpose of distinguishing one component from another, not in a limiting sense. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention. Also, the singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as 'comprise' or 'have' mean that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, and one or more other features or components It does not preclude the possibility of adding

In addition, in the drawings, the size of the components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals, and overlapping description thereof will be omitted.

The valve joint pipe according to an embodiment of the present invention is a valve joint pipe used when connecting a pipe and a pipe of two lines having a flange. It is about preventing leaks while preventing leaks.

Figure 1 is a schematic perspective view of a valve joint pipe according to an embodiment of the present invention, Figure 2 is a cross-sectional view of the valve joint pipe according to an embodiment of the present invention.

The valve joint pipe 1000 according to an embodiment of the present invention includes an outer tube 100 , an inner tube 200 , a sealing 300 , and a separation prevention unit 400 .

The exterior 100 is a hollow tube, and a first joint flange 110 bent outwardly is formed at one end thereof. In addition, the first connection flange 120 bent outwardly is formed at the other end. At this time, the first connecting flange 110 and the first connecting flange 120 may be formed at both ends of the exterior 100, respectively.

The first junction flange 110 is configured to be directly bolted and coupled to a straight pipe or junction valve adjacent to the exterior 100 . The first connection flange 120 is a part connected by bolting to a second connection flange 222 to be described later.

The inner tube 200 is also provided as a hollow tube like the outer tube 100 . One end of the inner tube 200 is inserted into the outer tube 100 . The overall coupling length of the outer tube 100 and the inner tube 200 is determined according to the overlapping length of the inner tube 200 and the outer tube 100 .

At this time, the outer diameter of the inner tube 200 is provided to be smaller than the inner diameter of the outer tube (100). That is, when one end of the inner tube 200 is inserted into the outer tube 100 , the inner wall of the outer tube 100 and the outer wall of the inner tube 200 are spaced apart from each other.

A second joint flange 210 is formed at the other end of the inner tube 200 . The second junction flange 210 is configured to be directly bolted and coupled to a straight pipe or junction valve adjacent to the inner pipe 200 .

A connection part 220 is formed on the outer wall of the inner tube 200 . Specifically, the connection part 220 is formed in a region of the inner tube 200 that is not inserted into the outer tube 100 . The connection part 220 includes a pressing part 221 and a second connection flange 222 .

The pressing part 221 may be formed by being coupled to the outer wall of the inner tube 200 through welding or the like. The pressing part 221 is configured to press the sealing 300 toward the stopper 130 .

The second connection flange 222 is configured to protrude from the pressing part 221 in the radial direction of the outer tube 100 / inner tube 200 . The second connection flange 222 may also be formed by being coupled to the pressing part 221 through welding or the like.

The stopper 130 is configured to be sealed by restricting the movement of the sealing 300 . The stopper 130 is formed to protrude from the inner wall of the exterior 100 . Since the connection part 220 is formed in an area of the inner tube 200 that is not inserted into the exterior 100 , a separation space is formed between the pressing part 221 and the stopper 130 . A sealing 300 is interposed in this space. The shape of the sealing 300 is provided to correspond to the shape of the spaced apart space between the pressing part 221 and the stopper 130 . That is, the sealing 300 is provided as a ring-shaped or hollow member in which the diameter of the hollow formed in the center is equal to or slightly larger than the outer diameter of the inner tube 200 . The sealing 300 may be an elastic member that is elastically deformed by an external force or a soft metal.

The stopper 130 may form an inclined surface whose thickness is narrowed in a direction toward the pressing part 221 . Correspondingly, the sealing 300 may form an inclined surface whose thickness is narrowed in the direction toward the stopper 130 . The inclined surfaces of the sealing 300 and the stopper 130 may be in close contact with each other to form a seal, and when these inclined surfaces are in contact, the contact force may be increased by the principle of the inclined surface, as well as the contact area is widened, making it more robust A seal may be provided.

The first connection flange 120 and the second connection flange 222 are bolted together by bolts. As the bolts are tightened, the pressing unit 221 moves toward the stopper 130 and the pressing unit 221 presses the sealing 300 toward the stopper 130, so that the sealing of the exterior 100 and the inner tube 200 is further improved. .

3 is a perspective view/front view of a separation preventing part of a valve joint pipe according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view of a main part of a valve joint pipe according to an embodiment of the present invention.

The separation preventing unit 400 is configured to prevent the inner tube 200 from being separated from the outer tube 100 while preventing leakage from between the outer tube 100 and the inner tube 200 to the outside.

The separation preventing unit 400 is formed in a hollow disk shape. That is, it is provided in a donut shape.

A plurality of first grooves 410 spaced apart from each other are formed on the outer peripheral surface of the separation preventing unit 400 . Specifically, the first groove portion 410 is formed to be depressed inwardly along the radial direction from the outer circumferential surface of the separation prevention portion (400).

A region in which the first groove portion 410 is not formed among the outer circumferential surfaces of the separation preventing portion 400 is welded to the inner wall of the exterior 100 . On the other hand, the thickness of the separation preventing part 400 is provided to correspond to the separation distance between the outer tube 100 and the inner tube 200, or to be slightly smaller than that.

In general, in the valve joint pipe 1000, the outer tube 100 and the inner tube 200 are spaced apart from each other due to external environmental factors and the space between the inner tube 200 and the outer tube 100 despite the sealing interposed in the inner tube 200. ) and the exterior 100 are moved in each radial direction, which causes a gap in the sealing, thereby causing leakage to the outside.

However, in this embodiment, the separation preventing portion 400 is welded to the inner wall of the exterior 100 and the thickness of the separation prevention portion 400 corresponds to the separation distance between the exterior 100 and the inner tube 200 or is slightly smaller. provided, in particular, by restricting the movement in the radial direction of the inner tube 200, there is an effect of solving the problem of leakage that occurred in the prior art.

In addition, despite the sealing 300 being interposed due to the first groove portion 410, a passage is formed through which water permeating a small amount between the outer tube 100 and the inner tube 200 is formed, thereby preventing water from pooling and rotting. In addition, when a force is applied in the radial direction of the inner tube 200 due to external factors, etc., when the thickness of the separation prevention part 400 corresponds to the separation distance between the outer tube 100 and the inner tube 200, there is a risk of damage to the pipe However, due to the first groove 410, this problem is solved. That is, although the movement in the radial direction of the inner tube 200 is limited by the separation preventing unit 400 , there is also a risk of damage to the pipe, and damage is prevented by the first groove portion 410 .

One or more second grooves 420 are formed on the inner circumferential surface of the separation preventing unit 400 . In addition, a protrusion 500 having a shape corresponding to the second groove portion 420 is formed on the outer circumferential surface of the inner tube 200 . At this time, the second groove portion 420 is formed to be depressed inwardly along the radial direction from the inner circumferential surface of the separation preventing portion (400).

The protrusion 500 is a configuration for limiting movement in the longitudinal direction of the inner tube 200 / outer tube 100 . That is, it is configured to prevent the inner tube 200 from being separated from the outer tube 100 .

5 to 8 are views for explaining a process of inserting the inner tube of the valve joint tube according to an embodiment of the present invention.

When the outer tube 100 is inserted into the inner tube 200 , the protrusion 500 formed on the outer tube 100 is inserted to pass through the second groove portion 420 , and then the inner tube 200 is rotated at a predetermined angle, and then the first The connecting flange 120 and the second connecting flange 222 are mutually bolted.

The protrusion 500 is located on the opposite side of the sealing 300 with the separation preventing part 400 as the center. The exterior 100 and the inner tube 200 are separated from each other by movement along the longitudinal direction of the outer tube 100 , and after inserting the protrusion 500 of the inner tube 200 to pass through the second groove portion 420 . Even if the outer tube 200 and the inner tube 200 move by rotating the inner tube 200 by a predetermined angle, the separation preventing unit 400 is blocked by the protrusion 500 to prevent the inner tube 200 from being separated.

On the other hand, the protrusion 500 is spaced apart from the separation preventing part 400 along the longitudinal direction of the outer tube 100 / inner tube 200 . This distance is in order not to affect elasticity. The insertion length of the inner tube 200 , that is, the overlapping length of the inner tube 200 and the outer tube 100 is not limited due to the contact between the protrusion 500 and the separation preventing part 400 when the adjustment is made.

Therefore, according to the present invention, as a valve joint pipe used when connecting a pipe and a pipe of two lines having a flange, one end of the inner pipe is inserted inside the exterior, expansion and contraction is allowed, and leakage is prevented while preventing the separation of the two pipes A valve joint is disclosed.

The use of all examples or exemplary terms (eg, etc.) in the present invention is merely for the purpose of describing the present invention in detail, and the scope of the present invention is not limited by the examples or exemplary terms unless limited by the claims. It is not limited. In addition, those skilled in the art can appreciate that various modifications, combinations, and changes can be made according to design conditions and factors within the scope of the appended claims or equivalents thereof.

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and not only the claims to be described later, but also all ranges equivalent to or changed from these claims are of the spirit of the present invention. would be said to belong to the category.

1000: valve joint pipe
100: exterior 110: first joint flange
120: first connection flange 130: stopper
200: inner tube 210: second joint flange
220: connection part 221: pressurizing part
222: second connection flange 300: sealing
400: separation prevention part 410: first groove part
420: second groove 500: projection

Claims (5)

an exterior having a first joint flange bent outwardly formed at one end thereof, and a first connection flange bent outwardly formed at the other end thereof;
One end is inserted into the outer tube, the other end is formed with a second joint flange bent outward, the outer peripheral surface is formed with a protrusion, the inner tube spaced apart from the inner wall of the exterior;
a connecting portion having a pressing portion coupled to the outer wall of the inner tube, and a second connecting flange protruding from the pressing portion in a radial direction of the exterior;
a stopper protruding inward from the inner wall of the exterior;
a sealing interposed in a space between the pressing part and the stopper; and
It is formed in the shape of a hollow disk and has a thickness corresponding to the distance between the outer tube and the inner tube, and is recessed inward from the outer circumferential surface along the radial direction, and a plurality of first groove portions spaced apart from each other are formed, and the first groove portion The non-formed region is welded to the inner wall of the outer tube to form a passage through which water permeating between the outer tube and the inner tube moves while restricting the radial movement of the inner tube, and is recessed inward along the radial direction from the inner circumferential surface and a separation prevention unit in which one or more second grooves corresponding to the protrusions are formed;
A valve joint pipe comprising a.
delete delete According to claim 1,
The separation preventing part and the protrusion are spaced apart from each other along the longitudinal direction of the exterior valve joint pipe.
5. The method of claim 4,
The inner tube is rotated at a predetermined angle after the protrusion passes through the second groove portion, so that one end of the inner tube is inserted into the outer tube.

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