KR200299396Y1 - Connection means of pipe - Google Patents

Abstract

The present invention relates to a connection structure of a soft pipe, and does not cause a leakage phenomenon even after a predetermined time has elapsed or moved after fixing the soft pipe to the interconnection.

The present invention is coupled to the first pipe (1) of large diameter by a welding joint, the nipple (3) is coupled to the nipple (3) by fastening and fastening the inner diameter of the second pipe (11) In the pipe connection structure composed of a flare nut 13 and a connection crimp 15 which is located between the inner side of the flare nut 13 and the outer side of the second pipe 11 to press the second pipe 11. In addition, the crimping supporter 50 having a proper length is coupled to the inside of the second pipe 11 fitted into the flare nut 13.

Description

Connection structure of soft pipe {CONNECTION MEANS OF PIPE}

The present invention relates to a connection structure of the soft pipe.

As is generally known, copper pipes and copper pipes used in heat exchangers, medium and large ice heat storage tanks, and the like are connected by welding joints, nipples, and flare nuts. When the welding joints are applied, both copper pipe diameters are the same or similar. In the case of applying the nipple and the flare nut, the nipple and the flare nut are used when the copper pipe diameters on both sides are different or when the coupling and separation are easily performed. The copper pipes used in the heat exchanger and the medium-large ice-cold heat tank are generally using soft pipes, and the soft pipes are generally applied by smoothing interconnection and banding.

1 and 2, a conventional pipe connecting structure includes a large diameter first pipe 1, a nipple 3 fixed to the first pipe 1 by welding seams, and the nipple 3 It is made of a flare nut 13 is coupled to the threaded portion 5 of the) and the second pipe 11 of the small diameter is located inward.

The nipple (3) consists of a flange portion (7), a screw portion (5) and a joining portion (9), positioning the joining portion (9) in the hole of the first pipe (1) and fixing by welding, The threaded portion 5 is such that the second pipe 11 corresponds to the inner circumference of the threaded portion 5 as the flare nut 13 is rotated.

After the second pipe 11 is coupled to the inner side of the flare nut 13, the inner side of the flare nut 13 and the second pipe (before the tightening of the screw part 5 of the flare nut 13 and the nipple 3) The coupling crimp 15 is coupled between the outside of the 11 and the flare nut 13 is connected to the nipple 3 with the coupling crimp 15 positioned at the outer circumference of the second pipe 11. When the joint is tightened, the connection crimp 15 compresses the second pipe 11 positioned inside the threaded portion 5, thereby smoothly sealing the initial state.

As described above, when the nipple 3 and the flare nut 13 are completely tightened by tightening the flare nut 13, the connection of the first pipe 1 and the second pipe 11 is completed.

Reference numeral 17 is an ice storage tank, and 19 is a heat exchange pipe.

However, in the above connection structure of the soft pipe, the sealing is completely completed in the initial state in which the first pipe 1 and the second pipe 11 are connected and fixed by the nipple 3 and the flare nut 13, When the evaporation or the ice storage tank 17 is moved and moved, the soft second pipe 11 is twisted finely and is displaced from the inner circumference of the threaded portion 5 of the nipple 3 while leaking in the portion. There was a problem that occurred.

The object of the present invention is to provide a connection structure of the soft pipes so that no leakage occurs even after a certain time has elapsed or moved after fixing the soft pipes.

In order to achieve the above object, the present invention provides a nipple fixed to a first pipe, a flare nut coupled to the nipple and fitted with a second pipe inwardly, and a connection located between the flare nut and the second pipe. In the pipe connection structure consisting of a crimping body, the crimping support is coupled to the inside of the second pipe fitted into the flare nut.

1 is a schematic view showing a typical ice heat storage tank,

2 is an enlarged exploded view of a main portion of a conventional one according to part A of FIG. 1;

3 is an enlarged exploded view of main parts of an embodiment of the present invention corresponding to part A of FIG. 1;

4 is a cross-sectional view of the coupled state of the embodiment of the present invention.

<Description of the code used in the main part of the drawing>

1: first pipe 3: nipple

11: second pipe 13: flare nut

15: connection crimp 50: crimp support

The present invention is referred to in FIG. 1 and as shown in FIGS. 3 and 4, through a nipple 3 fixed to a first pipe 1 of large diameter through a welded joint, and through fastening fixing to the nipple 3. The second pipe 11 is located between the inner side of the flare nut 13 and the outer side of the second pipe 11 and the flare nut 13 to which the second pipe 11 of small diameter is fitted. In the pipe connection structure consisting of a connection crimp (15) for crimping, the crimping support (50) of a suitable length is coupled to the inside of the second pipe (11) fitted into the flare nut (13).

The first pipe 1 is formed of a rigid or soft, the second pipe 11 is formed of a soft, the nipple (3) is coupled to the flare nut 13 through the threaded portion (5) will be.

The crimping supporter 50 positioned on the second pipe 11, which is an inner facing point of the flare nut 13, is formed in a pipe shape and formed of a rigid material, and a working fluid moves inside the crimping supporter 50. In this case, the crimping supporter 50 withstands the pressure of the second pipe 11 and the connecting crimp 15 to prevent the second pipe 11 from twisting.

Reference numeral 7 is a flange portion, 9 is a joint portion, 17 is an ice storage tank, and 19 is a heat exchange pipe.

The present invention as described above is to prevent the leakage occurs even after a certain time has elapsed or moved after fixing the flexible pipe, the nipple (3) is fixed to the first pipe (1), the second pipe (11) While the pipe-like crimping supporter 50 is inserted into the inside, the second pipe 11 is inserted into the flare nut 13, and the connection crimp between the flare nut 13 and the second pipe 11 is carried out. At the same time as (15) is coupled to the threaded portion (5) of the nipple (3) is opposed to tighten the flare nut (13).

When the flare nut 13 is positioned and tightened on the screw portion 5 of the nipple 3, the flare nut 13 is rotated to guide the connecting crimp 15 into the screw portion 5 of the nipple 3. At the same time as the movement of the connection crimp 15, the second pipe 11 and the crimp support 50 are positioned inside the threaded portion 5, and the connection crimped body which is positioned inside the threaded portion 5 ( 15), the second pipe 11 and the crimping supporter 50 are maintained in a completely close state by mutual repulsion. In the above state, the crimping supporter 50 is in close contact with the shape thereof without changing its shape, thereby preventing twisting and deformation of the second pipe 11 in advance, thereby preventing the first pipe 1 and the second pipe from external impact. Even if (11) flows, the phenomenon of separation at the joint does not occur.

As described above, the present invention integrally fixes the nipple to the first pipe, positions the second pipe and the connecting crimp body to the flare nut coupled to the nipple, and couples the crimp support to the inside of the second pipe. Is fastened to the nipple, and the connection crimping body, the second pipe and the crimping support are kept in balance with each other according to the tightening amount of the flannel, so that no leakage occurs at the coupling portion, Even if an impact occurs, deformation and leakage do not occur as the second pipe is not twisted by the supporting force of the crimping support.

As the crimp support is formed and coupled to the pipe, the working fluid moves smoothly through the second pipe and the first pipe.

In the case of disassembling and repairing the second pipe and the first pipe, even if the end of the second pipe is broken, the crimping support and the connecting crimp can be easily positioned by simply placing the crimping support and the connecting crimp without cutting the second pipe. Tighten it.

Claims (2)

The nipple (3) fixed to the first pipe (1), the flare nut (13) is coupled to the nipple (3) and the second pipe (11) is fitted inward, and the flare nut (13) and the first In the pipe connecting structure composed of the connecting crimps 15 positioned between the two pipes 11, the crimping supporter 50 is coupled to the inside of the second pipe 11 fitted into the flare nut 13. A flexible pipe connection structure. The method of claim 1, The crimping supporter 50 is a pipe structure, characterized in that the pipe.