WO2018088880A1

WO2018088880A1 - Watertight member for pipe connecting device

Info

Publication number: WO2018088880A1
Application number: PCT/KR2017/012900
Authority: WO
Inventors: 이상헌; 한동일
Original assignee: (주)두쿰
Priority date: 2016-11-14
Filing date: 2017-11-14
Publication date: 2018-05-17

Abstract

The present invention relates to a watertight member for a pipe connecting device and, more particularly, to a watertight member for a pipe connecting device, wherein the watertight member can be installed on a pipe connecting device for connecting pipes, thereby enhancing the watertightness thereof, and separation between the pipe connecting device and the watertight member, and leakage caused by the separation, can be prevented. The present invention provides a watertight member for a pipe connecting device for connecting boundary portions of two pipes having ends that tightly contact each other. The watertight member includes: a base part spaced apart from a circumferential surface of the pipe; a protrusion part protruding from one side of the base part towards the pipe; a tightly contacting part bent from each of the two ends of the base part to contact the circumferential surface of the pipe, and having an end extending towards the protrusion part; and a reinforcement part provided on a connecting part between the base part and the protrusion part.

Description

Watertight Member for Piping Connection

The present invention relates to a watertight member for a pipe connecting device, and more particularly, is installed in a pipe connecting device for connecting a pipe to improve watertightness and prevent separation between the pipe connecting device and the watertight member due to negative pressure and leakage thereof. The present invention relates to a watertight member for a pipe connecting device.

Typical constructions include plumbing to supply water to each residential space. Piping can be installed from the basement to the rooftop. The water supply method of the living space by the pipe may be a method of pumping the water to the top of the pipe, the water falls by its own weight.

Conventionally, as the pipes are fixed to each other by welding, they are easily deformed by external pressure or the like, and have to be repaired at any time, and construction is difficult. In order to solve this problem, it has recently been used to arrange a watertight member at a connection portion of a pipe and fasten the watertight member with a fastening unit.

On the other hand, in recent years, as the building becomes higher, the water pressure applied to the pipe and the watertight member may be significantly increased as the water falls along the pipe. In order to prevent this, a pressure reducing valve may be installed in each section of the pipe.

Here, when breakage occurs in the pressure reducing valve during water supply, leakage may occur in the watertight member when the pressure applied to the watertight member increases and the pressure increases above the maximum allowable water pressure of the watertight member.

In order to solve this problem, conventionally, a watertight member for a pipe connecting device is used.

1 is a perspective view showing a conventional watertight member for a pipe connection device, Figure 2 is a cross-sectional view taken along the line II-II 'in the watertight member for a pipe connection device shown in Figure 1, Figure 3 is shown in FIG. It is a state which the watertight member for the pipe connection apparatus which was connected was fastened to the pipe connection apparatus.

1 to 3, the conventional watertight member 100 for a pipe connection device is a watertight member 100 for a pipe connection device that connects the boundary portions of two pipes 10 whose ends are in close contact with each other. The part 110, the protrusion 120, and the contact part 130 may be included.

The contact part 130 is bent from each of both ends of the base part 110 so as to contact the circumferential surface of the pipe, and the end of the contact part 130 extends toward the protrusion part 120.

As shown in FIG. 3, the protrusion 120 may be elastically deformed to contact the pipe in a state where it is located at the boundary between two pipes 10 closely contacted with each other. The protrusion 120 may strongly press the portions where the pipes 20 are in contact with each other to prevent the leakage of water.

However, the conventional watertight member 100 for a pipe connection device is a space formed on both sides of the protrusion 120 due to the negative pressure when the water remaining in the inside of the pipe is discharged to the outside using a pump for reasons such as pipe repair. Water remaining in (S) flows into the pipe 10 and at the same time the protrusion 120 is sucked into the inside of the pipe 10, deformation of the space (S) occurs, the close portion 130 is the pipe (10) Water leakage may occur from the periphery of).

The present invention is to provide a watertight member for the pipe connecting device that is installed in the pipe connecting device for connecting the pipe is improved in watertightness and can prevent the separation between the pipe connecting device and the watertight member due to negative pressure, and thereby prevent leakage.

The present invention provides a watertight member for a pipe connecting device for connecting the boundary portions of two pipes whose ends are in close contact with each other, the base being spaced apart from the circumferential surface of the pipe; A protrusion formed to protrude toward the pipe from one side of the base part; A close contact portion bent from each of both ends of the base portion to be in contact with a circumferential surface of the pipe, and an end portion of which is extended toward the protrusion portion; And a reinforcement part formed at a connection portion of the base part and the protrusion.

The reinforcement part may have a height extending from the base part and a length extending from both sides of the protrusion part, respectively.

In this case, the reinforcing portion may have a rectangular cross-sectional shape.

When the length of the reinforcement part is 3 mm, the height of the reinforcement part is preferably 2 mm to 3.5 mm.

At this time, when the length of the reinforcement portion is 3 mm, it is more preferable that the height of the reinforcement portion is 2.5 mm to 3.5 mm.

In addition, the present invention is a watertight member for a pipe connecting device connecting the boundary portion of the two pipes whose ends are in close contact with each other, it is preferable to be prevented from being sucked into the inside of the pipe is caught by the end of the pipe when negative pressure occurs.

The watertight member for the pipe connection device according to the present invention can be improved watertight performance by the reinforcing portion, it is possible to prevent the separation between the pipe connection device and the watertight member by the negative pressure and thereby leaks.

1 is a perspective view showing a watertight member for a conventional pipe connection device.

FIG. 2 is a cross-sectional view taken along the line II-II 'of the watertight member 100 for the pipe connecting apparatus shown in FIG. 1.

3 is a state diagram in which the watertight member 100 for a pipe connecting device shown in FIG. 1 is sieved through the pipe connecting device 20.

4 and 5 are views illustrating various shapes of the reinforcing part 140 in the watertight member 200 for the pipe connection device according to the present invention.

FIG. 6 is a state diagram in which the watertight member 300 for the pipe connecting device shown in FIG. 4 is fastened to the pipe connecting device 20.

7 is a graph simulating the maximum allowable water pressure while changing the J value of the watertight member of the example shown in FIG. 5 in the watertight member for the pipe connection device according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and like reference numerals designate like elements throughout the specification.

In addition, in various embodiments, components having the same configuration will be described only in the exemplary embodiment using the same reference numerals, and in other embodiments, only the components different from the exemplary embodiment will be described.

Throughout the specification, when a part is said to be "connected" with another part, it includes not only "directly connected" but also "indirectly connected" with another member therebetween. In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated.

1 is a perspective view illustrating a conventional watertight member for a pipe connection device, FIG. 2 is a cross-sectional view taken along line II-II 'of the watertight member 100 for a pipe connection device shown in FIG. 1, and FIG. 1 is a state diagram in which the watertight member 100 for a pipe connecting device shown in FIG. 1 is fastened to the pipe connecting device 20.

4 and 5 are views showing various shapes of the reinforcing part 140 in the watertight member 200 for the pipe connection device according to an embodiment of the present invention, Figure 6 is a pipe connection device shown in FIG. It is a state diagram in which the watertight member 200 is fastened to the pipe connection device 20.

4 and 5, the watertight member 200 (hereinafter referred to as "watertight member") for the pipe connection device according to an embodiment of the present invention is the same as the conventional watertight member 100 shown in FIG. As a watertight member connecting the boundary portions of two pipes 10 whose ends are in close contact with each other, the base unit 110 includes a base part 110, a protrusion part 120, an adhesion part 130, and a reinforcing part 140.

The base portion 110 is spaced apart from the circumferential surface of the pipe 10. The base unit 110 may be formed to a predetermined thickness. The base 110 may have a plate shape having a predetermined thickness. Since the thickness of the base 110 may be changed according to the design, a detailed description thereof will be omitted.

The protrusion 120 is formed to protrude toward the pipe 10 from one side of the base 110. The protrusion 120 may have a predetermined width. The shape of the base 110 and the protrusion 120 may be a letter 'T' shape.

The close contact portion 130 is bent from each of both ends of the base portion 110 to be in contact with the circumferential surface of the pipe 10. An end of the contact portion 130 is formed to extend toward the protrusion 120.

The reinforcement part 140 is formed at a connection portion of the base part 110 and the protrusion part 120.

The reinforcement part 140 may have a polygonal cross-sectional shape. For example, as shown in FIG. 4, when the reinforcement part 140a is a triangle, the reinforcement part 140a may decrease in width as the reinforcement part 140a moves away from the base part 110.

As shown in FIG. 5, the cross-sectional shape of the reinforcement part 140b may be rectangular.

The reinforcement part 140 reinforces the root part of the protrusion part 120. Here, the root portion of the protrusion 120 may be a boundary portion of the protrusion 120 with the base 110.

Since the reinforcement part 140 may minimize the deformation of the protrusion part 120 in a state in which the protrusion part 120 is in close contact with the pipe 10, the watertightness may be improved.

The pipe connecting apparatus including the watertight member 200 may include a watertight member 200 positioned at a connection portion of the pipe 10 and a fastening unit 20 formed to surround the watertight member 100.

Here, since the fastening unit 20 may be a fastening unit included in a general pipe connection device, a detailed description thereof will be omitted.

Referring to FIG. 6, the watertight member 200 may be elastically deformed to be in contact with the pipe 10 in a state where the watertight member 200 is positioned at the boundary between two pipes 10 that are in close contact with each other. The protrusion 120 may strongly press the portions where the pipes 10 are in contact with each other to prevent leakage of water.

In the state where the watertight member 200 is located at the boundary of the two pipes 10 which are in close contact with each other, the close contact part 130 is elastically deformed to the surface of the pipe 10 and the water flowing out of the pipe is connected to the pipe. It can be prevented from leaking from the device.

In addition, in the case of discharging the remaining water inside the pipe to the outside by using a pump for repair of the pipe, etc., when the negative pressure is generated, the reinforcing part 140 is caught by the end of the pipe 10, so that the protrusion 120 is connected to the pipe ( Sucking into the inside of 10) is prevented.

Therefore, the space S formed on both sides of the protrusion 120, the base portion 110, the shape of the contact portion 130, and the contact between the contact portion 130 and the circumferential surface of the pipe 10 are maintained so that the pipe connecting device And separation between watertight and watertight members can be prevented.

Based on the embodiment shown in FIG. 5, the watertightness of the pipe 10 may be improved and the protrusion 120 may be prevented from being sucked into the pipe 10 when negative pressure occurs in the pipe 10. Let's look at the conditions.

The length and thickness mentioned later are defined as the length measured based on the axial direction X or the radial direction Y of the piping 10.

First, as the axial length G of the bottom surface of the close contact portion 130 becomes longer, the area in contact with the outer circumferential surface of the pipe 10 increases, thereby improving watertightness.

However, when the axial length (G) of the bottom surface of the close contact portion 130 is too long, the expansion force of the watertight member may be reduced, so it is preferably limited to a predetermined length. This is because in order for the watertight member to be properly installed, the process of expanding the watertight member while water is filled in the space S shown in FIG. 6 after the watertight member is installed is essential. This is because if the length G is too long, not only water is difficult to fill the space S, but also the filling speed may be slow.

Even if the protrusion 120 is partially sucked due to the negative pressure generated inside the pipe 10, it is important to restore the original shape again. For this purpose, the material of the watertight member uses a spring Shore (Hs) of 70 Shore A. It is preferable.

In addition, as the radial thickness M of the base part 110 becomes thicker, the restoring force of the watertight member is improved, and when too thick, the size of the space S on both sides of the protruding part is reduced, thereby decreasing the expansion force of the watertight member. Therefore, it is desirable to be limited to within a certain thickness.

In addition, it is preferable to form the reinforcement part 140 so that the protrusion 120 is not sucked in when the negative pressure occurs inside the pipe 10, but as described above when the size of the reinforcement part 140 is too large, Since the size of the space S on both sides of the protrusion may be reduced, the expansion force of the watertight member may be lowered, and therefore, the space S may be limited within a predetermined thickness.

As shown in FIG. 5, the reinforcement part 140 has a height J extending along the radial direction from the base part 110 and a length L extending along the axial direction on both sides of the protrusion 120. It can be defined as.

The size of the reinforcement 140 most suitable for the watertightness and the resilience of the watertight member may be derived as follows.

With reference to the sign shown in Figure 5, the appropriate allowable dimensions of the watertight member to be applied to the pipe 10 having an inner diameter of 50 mm, 65 mm and 80 mm, respectively, are as follows.

<Table 1> Appropriate allowable dimensions of watertight members

As shown in Table 1, the length L of the reinforcement part 140 according to each embodiment is preferably 3 mm. Looking at this, the distance (F) between the mutually opposite contact portion 130 is 10 mm, the axial length (H) of the protrusion 120 and the length of the reinforcement portion 140 formed on both sides of the protrusion 120. The sum of (L) should be less than 10 mm. This is because, as described above, water should be filled in the space S after installation of the watertight member, because if the sum of these is larger than 10 mm, the water cannot be filled into the space S. That is, the smaller the length (L) of the reinforcing portion 140 is advantageous to fill the water in the space (S), but if too small, the protrusion 120 is sucked in the situation that the negative pressure occurs inside the pipe (10). Problems may arise.

Therefore, it is necessary to simultaneously consider that the length L of the reinforcement part 140 is not sucked when the expansion of the watertight member and negative pressure are generated, and in order to satisfy all of these, the length L of the reinforcement part 140 is 3 mm. It is preferable.

As described above, the size of the reinforcement part 140 is defined as a height J extending along the radial direction from the base part 110 and a length L extending along the axial direction on both sides of the protrusion 120. When the length L of the reinforcement part 140 is 3 mm, the height J of the reinforcement part 140 is preferably 2.5 mm to 3.5 mm.

In the graph, the value of the x-axis is the dimension value of J, and the value of the y-axis is the pressure value at which leakage starts to occur in the watertight member, which may be the maximum allowable hydraulic pressure.

The maximum allowable value of J differs according to the inner diameter of the pipe 10. This is because the sum of M and J should be set smaller than E. If the sum of M and J is larger than E, the contact portion 130 does not come into contact with the outer circumferential surface of the pipe 10 even if a watertight member is provided, so that it cannot function as a watertight member.

Therefore, the maximum value of J is 3.8 mm when the inner diameter of the pipe 10 is 50 mm, the maximum value of J is 4.3 mm when the inner diameter is 65 mm, and the maximum value of J is 4.4 mm when the inner diameter is 80 mm.

As can be seen in Figure 7, it can be seen that the maximum allowable water pressure increases rapidly when the range of the J value is 2 mm to 3.5 mm. Since the maximum value of the J value is different depending on the inner diameter of the pipe 10 in the range where the J value exceeds 3.5 mm, it is difficult to grasp the tendency of the allowable water pressure according to the size of the J value, so it is irrelevant to the inner diameter of the pipe 10. Therefore, the range where the tendency can be grasped is limited to 3.5 mm.

That is, the size of the reinforcement portion 140 is preferably the length (L) is 3 mm, the height (J) is formed in the range of 2 mm to 3.5 mm, more preferably the length (L) is 3 mm , When the height (J) is formed in the range of 2.5 mm to 3.5 mm can be confirmed that the water-tightness of the water-tight member is improved, there is an effect that can be prevented from being sucked due to the negative pressure.

While various embodiments of the present invention have been described above, the drawings and the detailed description of the present invention have been exemplified only as illustrative examples of the present invention, which are used only for the purpose of describing the present invention and are intended to limit the meaning and claims of the present invention. It is not intended to be used to limit the scope of the invention described in the scope. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims

As a watertight member for a pipe connecting device that connects the boundary portions of two pipes whose ends are in close contact with each other,

A base part spaced apart from a circumferential surface of the pipe;

A protrusion formed to protrude toward the pipe from one side of the base part;

A close contact portion bent from each of both ends of the base portion to be in contact with a circumferential surface of the pipe, and an end portion of which is extended toward the protrusion portion; And

A reinforcement part formed at a connection portion of the base part and the protrusion part;

Watertight member for piping connection device comprising a.
The method of claim 1,

The reinforcing part is a watertight member for a pipe connection device, characterized in that the height extending from the base portion and the length extending on each side of the protrusion is formed.
The method of claim 2,

The reinforcing part is a watertight member for a pipe connection device having a rectangular cross section.
The method of claim 3,

When the length of the reinforcement portion is 3 mm,

The height of the reinforcement portion is a watertight member for a pipe connection device, characterized in that 2 mm to 3.5 mm.
The method of claim 4, wherein

When the length of the reinforcement portion is 3 mm,

The height of the reinforcing portion is 2.5 mm to 3.5 mm watertight member for a pipe connection device, characterized in that.
Watertight member for piping connection device connecting the boundary portion of two pipes whose ends are in close contact with each other, the watertight for the pipe connection device characterized in that when the negative pressure is generated is prevented from being sucked into the inside of the pipe when caught by the end of the pipe absence.