KR101579403B1

KR101579403B1 - A connector of pipe

Info

Publication number: KR101579403B1
Application number: KR1020150055071A
Authority: KR
Inventors: 최원보
Original assignee: 최원보
Priority date: 2015-04-20
Filing date: 2015-04-20
Publication date: 2015-12-21

Abstract

The present invention relates to a pipe fastener, and more particularly, to a technique for preventing a phenomenon in which a fluid flows into a gap in an opening portion when a pipe is fastened to fasten a double pipe pipe, thereby corroding the outer skin.
Accordingly, the present invention provides a fastener for fastening a dual pipe pipe comprising an outer shell and an inner pipe, the fastener comprising: a fastener housing (100) for wrapping a distal end of a dual pipe pipe (200) A latching jaw 110 that is engaged with a fastening protrusion 230 formed at each end of the double tube on the inner side surface of the fastener housing 100; A rubber ring insertion groove 120 formed on an inner surface of the fastener housing 100; And a rubber ring (300) inserted into the rubber ring insertion groove (120)
The rubber ring (300) includes pipe contact protrusions (310) formed on both inner sides thereof; A cavity 320 formed at an upper portion of the pipe contact protrusion 310; And a fluid inflow blocking part (330) formed at the center of the rubber ring (300) and inserted between the contact parts of the double pipe pipe (200).

Description

{A connector of pipe}

The present invention relates to a pipe fastener, and more particularly, to a technique for preventing a phenomenon in which a fluid flows into a gap in an opening portion when a pipe is fastened to fasten a double pipe pipe, thereby corroding the outer skin.

In the present invention, the double tube means a tube having an outer shell and an inner tube different from each other. The double tube to which the present invention is applied is made of iron (carbon steel) as the material of the outer shell and stainless steel as the material of the inner tube in order to reduce the thickness of the stainless steel tube used in the portion contacting with water. The double pipes used in water supply lines or water supply lines for fire fighting facilities need to be changed in direction or extension or reduction in length as in the case of different pipes, and the connection method accompanied therewith is still unreasonable.

The connection method of the above-mentioned "tube tube" and "tube tube fitting" of the double tube includes the following methods.

(1) Flange fastening method

In the above method, the end of the pipe is rolled and deformed into a flange shape, and a suitable flange coupling is tightened to finish the joint. Rolled to the end of the pipe fitting, the flange shaped socket is welded, the flange shape of the end of the pipe is matched with the flange shape of the end of the fitting, and the flange coupling is tightened to finish the joint. This method is advantageous in that there is no leakage and there is no inflow of fluid in the opening portion. However, since the weight of the processing machine provided in the field is close to 1 ton, there are restrictions on movement and storage, There are disadvantages such as frequent occurrences, a need for skilled workers in machining, a risk of fire due to welding construction, and a long procurement and construction period due to welding construction.

(2) Connection method of protruding grooved part

In the above method, the projecting die is machined at the end of the pipe or fitting, and then the butt is fastened to fasten the connector. This fastening method is advantageous in that it is easy to move the processing machine provided in the field, easy to store, and it is easy to process the projection shape so that even a novice who is not an expert can process it and shorten the construction period by simple construction. However, there is no leakage at the time of fastening the double pipe, but there is a disadvantage that the fluid flows into the gap of the opening surface, causing corrosion of the outer shell.

(3) Grooving type Groove Connecting method

In the above method, the grooved grooved portion is formed on the end of the pipe or fitting and then the butt is fastened to fasten the coupling. This fastening method is advantageous in that the moving machine provided on the site is easy to move, easy to store, grooved grooving is easy, and construction time is shortened by simple construction. However, since the depth of the groove portion is limited, there is a risk of leakage due to the release of water pressure, and there is a problem that the fluid flows into the gap in the opening portion, causing corroding of the outer wall.

[0002] As a prior art relating to fastening pipes, Korean Patent Laid-Open Publication No. 1999-0017402 'Splice structure of impact-resistant hard vinyl chloride tube for joint use and joint method', the present invention relates to a joint structure of impact- In particular, a waterproof impact-resistant rigid vinyl chloride pipe having grooves formed at both ends thereof, a joint member having a projecting portion to be fastened to the groove portion, and a rubber ring which is inserted into the joint member to exhibit a water- A joint structure of a shock-resistant hard vinyl chloride tube and a jointing method have been disclosed. However, since No. 1999-0017402 does not relate to double pipe connection, it is not related to the problem of double pipe connection such as shell corrosion.

Korean Patent Laid-Open No. 2001-0008153 'Dual pipe leakproof packing' relates to a double pipe leakproof packing for preventing leakage of a connection pipe of a double pipe used for water supply and drainage in a high-rise building or a general building. In the past, there have been a number of leak-proof packings for double pipes. However, since one side of the ring-shaped leak-proof packing is sandwiched at the end of one pipe and the other pipe having the enlarged portion is sandwiched therebetween, There was a case where the water pipe was clogged due to insufficient fitting state or the packing was detached when the back pressure was applied. The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a double tube having a fitting portion which is fitted and fixed in an empty space formed between an outer tube and an inner tube, The outer surface of the leak-barrier packing body having the tube fixing part formed on one side of the inner circumferential surface is provided with an inclined part which is in contact with the sloping part of the sleeve and the sloping surface. When the tightening nut is tightened, the protruding step formed on the tightening nut compresses the sleeve, The packing body is stuck to prevent the closing of the packing from being released even if the back pressure of the fluid is applied. However, the above-described technique has a different configuration by only disclosing the configuration relating to the joining of the double tube and the single tube, not the joining of the two tubes.

Korean Patent Laid-Open No. 1999-0017402 'Splice structure of impact-resistant hard vinyl chloride pipe for water use and jointing method' Korean Patent Laid-Open No. 2001-0008153 'Dual pipe leakproof packing'

An object of the present invention is to provide a fastening method which can prevent corrosion of a shell due to no risk of leakage when fastening a double pipe, and which is simple in construction. Accordingly, in order to compensate for the disadvantages of the above-mentioned method of fastening a protruding groove connecting member, the present invention has been modified to prevent the inflow of fluid from the opening.

That is, according to the present invention, there is provided a fastener for fastening a dual pipe pipe composed of an outer shell and an inner pipe, the fastener comprising: a fastener housing (100) for wrapping an end of a double pipe pipe (200) A latching jaw 110 that is engaged with a fastening protrusion 230 formed at each end of the double tube on the inner side surface of the fastener housing 100; A rubber ring insertion groove 120 formed on an inner surface of the fastener housing 100; And a rubber ring (300) inserted into the rubber ring insertion groove (120)

The rubber ring (300) includes pipe contact protrusions (310) formed on both inner sides thereof; A cavity 320 formed at an upper portion of the pipe contact protrusion 310; And a fluid inflow blocking portion 330 formed at a central portion of the rubber ring 300 and inserted between the contact portions of the double pipe pipe 200. The double pipe pipe fastener includes: do.

According to the present invention, it is possible to provide a fastening method that can prevent corrosion of the outer shell due to no risk of leakage when fastening the double tube, and which is simple in construction. Particularly, the fluid flow blocking part of the rubber ring fills the gap of the end of the double pipe pipe to prevent leakage.

The wedge groove portion, which is an additional component, guides the pressure of the fluid in a direction to increase the sealing force of the fluid inflow blocking portion, thereby more effectively blocking the leakage.

1 is a cross-sectional view of a main portion of a conventional double pipe pipe fastener.
2 is a cross-sectional view of a main portion of a double pipe pipe fastener of the present invention.
3 is a perspective view showing a part of the rubber ring of the double pipe pipe fastener of the present invention.
4 is a cross-sectional view of a main portion of another double pipe pipe fastener of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

1 is a cross-sectional view of a main portion of a conventional double pipe pipe fastener. The double pipe 200 is composed of an iron (carbon steel) shell 210 and a stainless steel inner shell 220. In the case of FIG. 1, there is a problem that the fluid enters the connection gap and the outer skin is corroded by the fluid at the position (a).

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to prevent the fluid from entering the inner side of the rubber ring and the end of the outer shell to prevent corrosion of the outer shell. For this purpose, the present invention provides a fastener for fastening a dual pipe pipe composed of an outer shell and an inner pipe, the fastener comprising: a fastener housing (100) for wrapping the end of a dual pipe pipe (200) A latching jaw 110 that is engaged with a fastening protrusion 230 formed at each end of the double tube on the inner side surface of the fastener housing 100; A rubber ring insertion groove 120 formed on an inner surface of the fastener housing 100; And a rubber ring (300) inserted into the rubber ring insertion groove (120)

The rubber ring (300) includes pipe contact protrusions (310) formed on both inner sides thereof; A cavity 320 formed at an upper portion of the pipe contact protrusion 310; And a fluid inflow blocking part (330) formed at the center of the rubber ring (300) and inserted between the contact parts of the double pipe pipe (200). This configuration can be confirmed in FIG. 2 and FIG.

The fastener housing 100 is provided with an annular shape in which a pair of fastener housing 100 surrounds the periphery of the dual pipe 200 in the form of a semicircle. The pair of fastener housings are fastened by tightening the two double pipe pipes 200 by fastening means such as bolts and rivets.

Preferably, the fluid inflow blocking part 330 includes an extension part 340 for covering the contact part of the double pipe pipe 200 to block the inflow of fluid into the double pipe pipe 200. The extension 340 covers the end portions of the double pipe pipes 200, so that the inflow of the fluid can be blocked more efficiently.

4 is a cross-sectional view of a main portion of another double pipe pipe fastener of the present invention. As shown in FIG. 4, the fluid inflow blocking part 330 may include a wedge groove 350 for receiving hydraulic pressure of fluid in the pipe. The wedge groove 350 may be wide inward of the pipe and narrow in the outward direction of the pipe. When the fluid enters the wedge groove 350, the fluid pressure pushes the wedge groove 350 inward from the inside of the wedge groove 350 to make the fluid inflow blocking part 330 more closely contact the ends of the double pipe pipes 200 Thereby making it possible to block the inflow of the fluid more strongly.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it should be understood that various changes and modifications will be apparent to those skilled in the art. Obviously, the invention is not limited to the embodiments described above. Accordingly, the scope of protection of the present invention should be construed according to the following claims, and all technical ideas which fall within the scope of equivalence by alteration, substitution, substitution, Range. In addition, it should be clarified that some configurations of the drawings are intended to explain the configuration more clearly and are provided in an exaggerated or reduced size

100. Fastener housing
110. Hanging chin
200. Double pipe pipe
210. Sheath
220. Endothelium
300. Rubber ring
310. Pipe contact projection
320. Co
330. The fluid inflow-
340. Extension part
350. Wedge groove

Claims

1. A fastener for fastening a double pipe composed of an outer shell and an inner shell,
A fastener housing (100) for wrapping the ends of the dual pipe pipe (200) in contact with each other;
A latching jaw 110 that is engaged with a fastening protrusion 230 formed at each end of the double tube on the inner side surface of the fastener housing 100;
A rubber ring insertion groove 120 formed on an inner surface of the fastener housing 100;
And a rubber ring (300) inserted into the rubber ring insertion groove (120)
The rubber ring (300)
A pipe contact protrusion 310 formed on both sides of the inner side;
A cavity 320 formed at an upper portion of the pipe contact protrusion 310;
A fluid inflow blocking portion 330 formed at a central portion of the rubber ring 300 and inserted between the contact portions of the double pipe pipe 200;
Lt; / RTI >
The fluid inflow blocking part 330 includes an extension part 340 for covering the contact part of the dual pipe 200 to block the inflow of fluid into the double pipe pipe 200,
The fluid inflow blocking portion 330 includes a wedge groove portion 350 for receiving hydraulic pressure of fluid in the pipe,
Wherein the wedge groove portion (350) pushes the wedge groove (350) inward from the wedge groove (350) in order to bring the fluid inflow blocking portion (330) into close contact with the double side double pipe pipe (200).

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