WO2019103254A1

WO2019103254A1 - Pipe elbow

Info

Publication number: WO2019103254A1
Application number: PCT/KR2018/004686
Authority: WO
Inventors: 이종호; 이종태
Original assignee: 피피아이평화 주식회사; 피피아이 아메리카 인코포레이티드; 이혜정
Priority date: 2017-11-23
Filing date: 2018-04-23
Publication date: 2019-05-31
Also published as: KR101919813B1

Abstract

The present invention relates to a pipe elbow, which connects pipes and has a hollow portion through which the respective end portions thereof communicate in at least two directions, and can comprise: a body, which has a single tube structure or a dual tube structure and has spiral parts formed on the outer sides of both ends thereof, and to which the pipes are respectively coupled at both ends thereof; pipe fastening members rotatably coupled to the spiral parts; a ring-shaped sealing member for sealing a gap between the pipe fastening member and the pipe; a strength reinforcing part, which has a multilayer structure, is fused to or integrally formed at one side of the outer part of the body, and is formed at the position corresponding to a portion with which fluid flowing inside the body collides, so as to reduce noise or vibration caused by the fluid; and an auxiliary reinforcing part disposed between the strength reinforcing part and the body, and having a size corresponding to the size of the strength reinforcing part or having a size larger than that of the strength reinforcing part.

Description

Joint pipe

The present invention relates to a joint pipe having an improved structure capable of reducing noise and vibration of a joint pipe connecting the pipe and the pipe.

The pipe used for the transfer of water, gas, and various fluids is a tube shape with an empty interior, and it is made of various materials according to needs, such as the type of the fluid to be transported. Pipes have various diameters and lengths and are connected in various forms depending on the function and installation environment. The pipes can be used in combination so that a plurality of pipes can communicate with each other, and each pipe can be connected by a joint pipe.

Various shapes such as T shape, Y shape or L shape can be used depending on the direction in which the piping is connected. An example of a joint pipe is disclosed in Korean Patent Publication No. 10-2007-0078101.

In the joint pipe disclosed in the prior art, because of the shape characteristic, the direction of the fluid flowing inside changes drastically and a portion where the fluid collides occurs. The impact is transmitted to the inner wall of the joint pipe at the portion where the fluid collides, so that noise and vibration may occur. Therefore, it is necessary to develop a joint structure with improved structure that can reduce the noise and vibration of the joint pipe.

Further, if the fluid continuously collides with the same portion of the coupling pipe, there is a danger that the strength of the portion is weak and the coupling pipe is broken.

It is an object of the present invention to provide a joint structure of an improved structure capable of reducing noise and vibration of a joint pipe.

It is also an object of the present invention to provide a joint pipe capable of preventing breakage of the joint pipe due to continuous collision of fluid.

[0001] The present invention relates to a joint pipe, which is a joint pipe which is connected to a pipe and which has a hollow communicating with each end in at least two directions, the pipe having a single pipe structure or a double pipe structure, A body on which spiral portions are formed on both outer ends; A pipe coupling member rotatably coupled to the spiral portion; A ring-shaped sealing member that seals between the pipe coupling member and the pipe; A strength reinforcing part of a multilayer structure formed at a position corresponding to a collision part of the fluid flowing in the inside of the body so as to reduce noise or vibration due to the fluid, And an auxiliary reinforcing portion disposed between the strength reinforcing portion and the body and having a size corresponding to the size of the strength reinforcing portion or a size larger than that of the strength reinforcing portion.

The strength enhancing unit includes a plurality of protrusions each having a plate shape having a different size from each other, and the protrusions are stacked so as to be smaller in size as they are further away from the body.

The protrusion can be made of the same material as the body or a different material.

The auxiliary reinforcing portion is made of a material different from the body, and has a lower strength than the body.

The strength reinforcing portion may include at least a plurality of slit grooves formed radially around the portion where the fluid hits, and formed along the edge of each protrusion.

The slit grooves may have a predetermined length and may be formed between adjacent slit grooves in the radial direction.

The strength reinforcing portion may include at least one slit groove formed in a predetermined length along the circumferential direction.

And the auxiliary reinforcing portion is made of a material different from that of the strength reinforcing portion.

According to the joint pipe of the present invention, since the strength reinforcing portion is provided, it has the effect of reinforcing the strength of the portion where the fluid impinges, and reducing noise and vibration.

Since the strength reinforcing portion has shapes and arrangements considering mixed materials of different materials, flow velocity and flow rate of fluid, it is possible to effectively reduce noise and vibration due to fluid collision.

1 is a perspective view of a joint pipe according to a first embodiment of the present invention.

2 is an exploded perspective view of a joint pipe according to a first embodiment of the present invention.

3 is a front view of a joint pipe according to the first embodiment of the present invention.

4 is a side cross-sectional view of a coupling pipe according to a first embodiment of the present invention.

5 is a side cross-sectional view showing a modification of the coupling pipe according to the first embodiment of the present invention.

6 is a side sectional view of a joint pipe according to a second embodiment of the present invention.

7 is a side sectional view of a joint pipe according to a third embodiment of the present invention.

8 is a perspective view of a joint pipe according to a fourth embodiment of the present invention.

9 is a perspective view of a joint pipe according to a fifth embodiment of the present invention.

10 is a front view of a coupling pipe according to a sixth embodiment of the present invention.

11 is a front view of a coupling pipe according to a seventh embodiment of the present invention.

12 is a perspective view of a coupling pipe according to an eighth embodiment of the present invention.

13 is a side view of a coupling pipe according to an eighth embodiment of the present invention.

14 is a perspective view of a joint pipe according to a ninth embodiment of the present invention.

15 is a side view of a coupling pipe according to a ninth embodiment of the present invention.

16 is a perspective view of a joint pipe according to a tenth embodiment of the present invention.

The above and other objects, features, and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings, which are not intended to limit the scope of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to denote the same or similar elements.

First, the detailed structure of the joint pipe according to the first embodiment of the present invention and its modified embodiments will be described.

1 is a perspective view of a joint pipe according to a first embodiment of the present invention. 2 is an exploded perspective view of a joint pipe according to a first embodiment of the present invention. 3 is a front view of a joint pipe according to the first embodiment of the present invention. 4 is a side cross-sectional view of a coupling pipe according to a first embodiment of the present invention. 5 is a side cross-sectional view showing a modification of the coupling pipe according to the first embodiment of the present invention. 6 is a side sectional view of a joint pipe according to a second embodiment of the present invention.

1 to 5, the coupling pipe 100 is a coupling pipe connecting the pipe 1 and the pipe 2. [ The joint pipe 100 may be formed in various shapes such as a T shape, a Y shape, and an L shape depending on the direction in which the

pipes

1 and 2 are connected. The joint pipe 100 having an L shape is also referred to as an elbow. In this embodiment, the L-shaped joint pipe 100 will be described as an example for convenience.

The joint pipe 100 may include a body 110 having a hollow formed therein and penetrating in both directions.

4, the body 110 includes a first layer 110a constituting a portion where a fluid actually flows and a second layer 110b forming an envelope of the first layer 110a . In the present invention, a tubular structure composed of two layers on a sectional view (FIG. 4) is defined as a "double tube structure". Here, the first layer 110a and the second layer 110b may be made of the same material but may be made of different materials having the same strength or different strengths by mixing materials having the same strength or different materials have. The second layer 110b may be bonded to the first layer 110a using an adhesive, or may be integrally formed by a double injection method or the like. That is, the body 110 may have a double-wall structure of a single material or a heterogeneous material.

Or as shown in FIG. 5, the body 110 may consist of only one layer. In the present invention, a tubular structure composed of one layer is defined as a 'single tubular structure' regardless of the material. Hereinafter, the body 110 will be described based on a single tube structure for convenience, but a single tube structure or a double tube structure may be selectively applied in the present invention. Further, all of the structures proposed in the present invention can be commonly applied to a single tube structure and a double tube structure.

The body 110 is bent in an L-shape according to the direction in which the

pipes

1 and 2 are connected and a connecting portion 112 for connecting the

pipes

1 and 2 may be formed at both ends. The strength reinforcement 120 may be formed on one side of the body 110.

The connection portions 112 are formed at both ends of the joint pipe 100 and can be formed on the same central axis line as the

pipes

1 and 2. [ Since the joint pipe 100 is L-shaped, each connecting portion 112 can be formed in a direction having an angle of 90 degrees with respect to each other.

A spiral portion 113 is formed on the outer side of the connection portion 112 and a pipe coupling member 115 that is rotatably coupled to the spiral portion 113 is provided. A sealing member 114 for sealing between the piping coupling member 115 and the

piping

1, 2 can be inserted therebetween. The piping fastening member 115 presses the sealing member 114 while tightly coupling the outer circumferential surface of the

piping

1 and 2 to connect the

piping

1 and 2 to the joint pipe 100 while being helically engaged with the connection portion 112.

The strength reinforcing portion 120 serves to mitigate the impact caused by the collision of the fluid flowing through the

piping

1, 2. The strength reinforcing portion 120 may be formed to protrude from the outer circumferential surface of the body 110.

The strength reinforcing portion 120 may be formed to have a predetermined thickness and be formed to have a thickness decreasing toward the peripheral portion around the portion where the fluid hits. Alternatively, though not shown in the drawing, the strength reinforcement portion 120 may have the same thickness from the center to the peripheral portion.

Further, as shown in Fig. 3, the strength enhancing portion 120 may include a plurality of protrusions 122. The stone publication 122 may be formed in a circular or elliptical shape, and a plurality of the stone publication 122 may be formed in a portion where the fluid hits. The stone plate 122 may be formed to have the same thickness from the center to the peripheral portion or may have a thickness decreasing from the center to the peripheral portion. At this time, the plurality of stone prints 122 may be arranged so that a virtual center axis (hereinafter referred to as a center axis) passing through the center of a circle or an ellipse concentrically.

However, the stone publication 122 may not be disposed concentrically with the center axis as needed. The position of the center shaft can be varied depending on the flow rate and flow rate of the fluid.

When the flow rate and the flow rate of the fluid are large, the fluid may collide against the wall surface of the body 110 almost perpendicularly to the central axis line of the

pipes

1 and 2. The strength reinforcing portion 120 may be formed such that the center of the uppermost end of the stacked stone presses 122 is positioned at a position where the fluid collides.

On the contrary, when the flow rate and the flow rate of the fluid are small, the fluid can strike against the wall surface of the body 110 in a position tilted perpendicular to the central axis line of the

pipes

1 and 2. Therefore, the strength reinforcing portion 120 can be formed such that the fluid collides at a position spaced apart from the center position of one of the stacked stone projections 122, the center of which is located at the uppermost position.

In the present embodiment, the strength reinforcing portion 120 is formed of a plurality of circular or elliptical stencils 122 laminated and formed. However, the shape of the strength reinforcing portion 120 may be modified into various shapes.

The strength reinforcement 120 may be formed of the same material as that of the body 110, and may be integrally formed with the body 110. In this embodiment, the joint pipe 100 may be formed of synthetic resin such as PVC, PP, PE, or the like. The strength reinforcing portion 120 may be integrally injection-molded with the body 110.

Meanwhile, the joint pipe 100 according to an embodiment of the present invention may have an additional structure for impact absorption and strength reinforcement.

5, the joint pipe 100a has a body 110 made of a hard material, and a soft auxiliary reinforcement part 130a is provided between the strength reinforcing part 120 and the outer peripheral surface of the body 110 .

The auxiliary reinforcement part 130a is made of a material that is relatively softer than the body 110 and is provided in a larger area than the strength reinforcement part 120. [ The auxiliary reinforcing portion 130a may have a laminated form together with the strength reinforcing portion 120. [ Alternatively, the auxiliary reinforcement part 130a may be configured to enclose a part of the body 110.

For example, the auxiliary reinforcement part 130a may be formed to have a size enough to cover all the areas of the body 110 where the fluid impinges on the surface of the body 110 facing the strength reinforcing part 120. Alternatively, the auxiliary reinforcement 130a may be formed to cover only the region where the strength reinforcement 120 is provided.

Here, the terms hardness and softness are not based on specific strength values or specific materials. Hardness and softness are defined as hardness or hardness of a material.

6, the auxiliary reinforcing portion 130b is formed to be inserted into the inside of the protrusion 122 which is directly coupled to the body 110 among the protrusion 122 of the strength reinforcing portion 120 It is possible. Or the auxiliary reinforcing portion 130b may be integrally formed with the projection 122. [

At this time, the auxiliary reinforcement portion 130b may be made of a material that can complement the rigidity of the strength reinforcement portion 120 or prevent an impact due to a fluid collision. The auxiliary reinforcing portion 130b may be formed of a different material from the body 110 as well as the strength reinforcing portion 120.

The

auxiliary reinforcement parts

130a and 130b shown in FIGS. 5 to 6 may be formed integrally with the body 110 through the double injection. Alternatively, auxiliary reinforcing

portions

130a and 130b may be separately formed and then fused to the body 110 by ultrasonic welding or the like.

In this embodiment, an example has been described in which the auxiliary reinforcing portion is formed of a material different from the body or the strength reinforcing portion. Although not shown in the drawing, the auxiliary reinforcing part may be made of a material mixed with a mixed material so as to increase the adhesiveness when it is double injected or separately manufactured and attached to the body. Alternatively, a material such as an adhesive capable of enhancing adhesion between the auxiliary reinforcing portion and the body, between the auxiliary reinforcing portion and the strength reinforcing portion may be applied and joined.

Hereinafter, the joint pipe according to various embodiments of the present invention including the strength reinforcement unit will be described in detail (detailed description about the same structure and characteristics as those of the above-described embodiments will be omitted).

7 is a side sectional view of a joint pipe according to a third embodiment of the present invention. 8 is a perspective view of a joint pipe according to a fourth embodiment of the present invention. 9 is a perspective view of a joint pipe according to a fifth embodiment of the present invention.

The strength reinforcing portion 120c may be formed of a releasing material with the body 110 to improve the absorbability against impact. That is, the strength reinforcing portion 120c may be integrally formed with the body 110 by double injection. For example, the body 110 of the coupling pipe 100c may be formed of synthetic resin such as PVC, PP, or PE, and the strength reinforcing portion 120c may be formed of a release material such as rubber or urethane.

Alternatively, as shown in Fig. 7, the respective stone projections 122c of the strength reinforcing portion 120c may be formed of different materials.

For example, a stone publication 122c closer to the body 110 may be made of a material having a higher strength, and a stone plate 122c away from the body 110 may be made of a material having a lower strength. Alternatively, the stone plate 122c close to the body 110 may be made of a material that can easily absorb noise and vibration, and the stone plate 122c may be made of a material having a different absorption rate of noise vibration as the stone plate 122c moves away from the body 110 have.

In the case where the strength reinforcing portion 120c is constituted by a stone plate 122c made of the same material or composed of stone plates 122c made of different materials, the shape of the stone plate 122c can also be variously changed.

For example, as shown in FIG. 8, a plurality of stone prints 122d may be formed in a square shape and stacked by size. As in the above-described embodiment, the stone prints 122d may be made of different materials or made of the same material. Therefore, the stone plate 122d may be integrally formed on the body 110 by double injection or may be attached to the body 110 by ultrasonic welding or the like.

As shown in FIG. 9, a square stone projection 122e is applied to a portion that needs to cover a large area in consideration of a collision site of the fluid, and an elliptical or circular stone projection 122e ) May be mixed and applied.

On the other hand, the strength reinforcing portion may have another modified form.

As shown in Fig. 10, the strength reinforcing portion 120f may include a plurality of stone projections 122f laminated in a circular or oval shape. The stone publication 122f may include at least one slit groove 124f that is radially disposed about a portion where the fluid hits and is formed to have a predetermined length.

The slit grooves 124f can locally lower the strength of the strength reinforcing portion 120f, thereby absorbing and absorbing the impact caused by the fluid colliding against the wall surface of the body 110. [

The slit grooves 124f may be formed at predetermined intervals along the edge of each protrusion 122f, and may be formed between other slit grooves 124f that are preferably disposed adjacent to each other.

Although the slit grooves 124f formed in the strength reinforcing portion 120f are formed in the radial direction in the present embodiment, the slit grooves 124f may be deformed into various shapes in order to buffer impact.

11, it is also possible that the slit grooves 126g are formed to have a predetermined length along the circumferential direction on the plurality of circular or elliptical stone projections 122g.

The joint pipe 100g constructed as described above can reinforce the strength of the joint pipe 100g by the strength reinforcement portion 120g formed outside the body 110 of the portion where the fluid hits. In addition, it is possible to prevent noise and vibration from occurring due to the shock absorbed by the strength reinforcing portion 120g.

The slit groove 126g can locally lower the strength of the strength reinforcing portion 120g, thereby absorbing and absorbing a shock generated when the fluid hits the wall surface of the body 110. [

Further, the joint pipe 100g can be improved in durability as the strength is reinforced by the strength reinforcing portion 120g, and can be prevented from being broken even in long-time use, which can contribute to an improvement in the service life.

In addition, although the strength reinforcing portion 120 is formed in a shape having a predetermined step in this embodiment, the shape of the strength reinforcing portion 120 is not limited and may be modified into various shapes.

For example, the strength reinforcing portion 120 may include a circular or elliptical convex portion integrally formed on the outside of the wall surface of the body 110 so that the height of the strength reinforcing portion 120 is continuously lowered toward the periphery around the portion where the fluid hits without a step Do.

In the present embodiment, the joint pipe 100 is described as a single layer of the wall surface of the body 110. However, the joint pipe 100 may be formed as a double pipe.

In the above-described embodiments, the joint pipe of the present invention has been described on the basis of the "L" shaped el-storage. Hereinafter, another type of joint pipe will be described. (The strength reinforcement portion and the auxiliary reinforcement portion shown in Figs. 1 to 11 may be equally applied to other types of joint pipes to be described below.) Hereinafter, The description of the auxiliary reinforcement portion and the various types of strength reinforcement elements will be omitted here because they are redundant).

12 is a perspective view of a coupling pipe according to an eighth embodiment of the present invention. 13 is a side view of a coupling pipe according to an eighth embodiment of the present invention.

12 and 13, the coupling pipe 200 may be formed in a T shape. The joint pipe 200 may include a body 210 having a hollow formed at both ends thereof. In addition, the body 210 may be bent in a predetermined shape according to the direction in which the pipe is connected, or may be formed in various other forms, and a connecting portion 212 for connecting the pipe may be formed at one side of the bent portion.

In addition, the body 210 may be provided with the strength reinforcing portion 220 at a portion where the fluid flows from the pipe connected to the connection portion 212 and collides with each other.

The strength reinforcing portion 220 may be formed to protrude so as to reinforce the strength of the outside of the wall where the fluid hits. The strength reinforcing part 220 may be formed to have a predetermined thickness and be formed such that the thickness of the reinforcing part 220 decreases toward the peripheral part around the part where the fluid hits.

In this embodiment, the strength reinforcing portion 220 may include a plurality of circular or elliptical protrusions 222, and may be formed in a form of being stacked on a portion where the fluid hits.

The strength reinforcement 220 may be formed of the same material as the body 210 and may be integrally formed with the body 210.

14 is a perspective view of a joint pipe according to a ninth embodiment of the present invention. 15 is a side view of a coupling pipe according to a ninth embodiment of the present invention.

Referring to FIGS. 14 and 15, the coupling pipe 300 may be formed in a Y-shape. The joint pipe 300 may include a body 310 having a hollow formed at both ends thereof. In addition, the body 310 may be bent in a predetermined shape depending on the direction in which the pipe is connected, or may be formed in various other forms, and a connecting portion 312 for connecting the pipe to one side of the bent portion may be formed.

In addition, the body 310 may be provided with a plurality of strength reinforcements 320 at portions where the fluid flows from the pipe connected to the connection portion 312 and collides with each other.

The strength reinforcing portion 320 may be formed to protrude so as to reinforce the strength of the outside of the wall surface against which the fluid hits. The strength reinforcing portion 320 may be formed to have a predetermined thickness and be formed such that the thickness thereof decreases toward the peripheral portion around the portion where the fluid hits.

In this embodiment, the strength reinforcing portion 320 may include a plurality of circular or elliptical protrusions 322, and may be formed to be stacked on a portion where the fluid hits.

In addition, the strength reinforcing portion 320 may be formed of the same material as the body 310 and integrally molded together with the body 310.

The joint pipe 300 may have a different position at which the fluid hits the body 310 depending on the shape of the connection portion 312 and the strength of the elastic body 320 may be adjusted in consideration of a position at which the fluid hits the body 310 The formed position or shape can be changed.

In the above-described embodiments, the

joint pipes

100, 200, and 300 have the connecting

portions

112, 212, and 312, respectively. However, the joint pipe may have the form of connecting the pipe without the connection part.

16, the joint pipe 400 according to the tenth embodiment of the present invention includes a main body 410 and an intensity strengthening portion 420 composed of a plurality of protrusions 422. [

At both ends of the main body 410, a pipe connection portion 420 having an inner diameter at an outer diameter of a pipe (not shown) to be connected may be formed. When the end of the pipe is inserted into each pipe connecting portion 420, the pipe and the pipe connecting portion 420 can be fixed to the outside of the pipe using an adhesive or the like.

The strength reinforcing portion 420 and the auxiliary reinforcing portion (not shown) described in the above embodiments can be similarly applied to the coupling pipe 400 of the present embodiment. In addition, a single pipe structure of a single material or a double pipe structure of a double material may be selectively applied to the body 410.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, But the present invention is not limited thereto.

INDUSTRIAL APPLICABILITY The present invention can be applied to reduce noise and vibration of a joint pipe connecting a pipe and a pipe.

Claims

There is provided a joint pipe for connecting between a pipe and a pipe and having a hollow communicating at each end in at least two directions,

A body having a single tube structure or a double tube structure, the tubes being connected to both ends of the tube, and a spiral portion formed at both ends outside the body;

A pipe coupling member rotatably coupled to the spiral portion;

A ring-shaped sealing member that seals between the pipe coupling member and the pipe;

A strength reinforcing part of a multilayer structure formed at a position corresponding to a collision part of the fluid flowing in the inside of the body so as to reduce noise or vibration due to the fluid, And

And an auxiliary reinforcing portion disposed between the strength reinforcing portion and the body and having a size corresponding to the size of the strength reinforcing portion or a size larger than that of the strength reinforcing portion

Joints.
The method according to claim 1,

The strength-

And a plurality of stone presses having plate shapes of mutually different sizes,

The stone publication

And is stacked so that its size becomes smaller as it gets farther from the body

Joints.
3. The method of claim 2,

The stone publication

And is made of the same material as the body or made of a different material

Joints.
The method of claim 3,

The auxiliary reinforcement portion

Wherein the body is made of a material different from that of the body,

Joints.
5. The method of claim 4,

The auxiliary reinforcement portion

And is made of a material different from the strength reinforcing portion

Joints.
3. The method of claim 2,

The strength-

And at least a plurality of slit grooves formed along the edge of each of the protrusions,

Joints.
The method according to claim 6,

The slit groove

Wherein the coupling tube is formed to have a predetermined length and is formed between the other slit grooves adjacent in the radial direction.
3. The method of claim 2,

The strength-

And at least one slit groove formed in a predetermined length along the circumferential direction.