KR102457318B1 - Pipe connection structure using flare member and method of manufacturing same - Google Patents

Abstract

Disclosed are a pipe coupling member using a flared portion and a method for manufacturing the same. The pipe coupling member includes a main body and a main body having a first main body flare connected to one end of the main body body. Here, the main body is integrally formed without welding, and the first main body flare part is formed perpendicular to the main body body by flaring a mother body having a larger length than the main body body, and the first main body flare part is at least One hole is formed, and the pipe coupling member and the pipe are inserted by inserting a fixing member into the hole of the first body flare part and the hole of the flare part of the external pipe to be coupled with the pipe coupling member without using a separate flange member. this is combined

Description

A pipe coupling member using a flare and a method for manufacturing the same

The present invention relates to a pipe coupling member using a flare portion and a method for manufacturing the same.

1 is a view showing a general pipe.

1, the pipe is formed by welding a stub 102 including a stub body 110 and a stub end 112 and a bend 110, and a hole ( A heavy flange member 104 on which 130 is formed is used.

Since the pipe is formed by welding, a welding inspection is performed during pipe construction. As a result, labor and inspection costs for the welding occur, thereby increasing the overall facility cost, making maintenance and repair difficult, and mass production is impossible.

In addition, since the flange member is used for coupling with other pipes, the pipe becomes heavy and the cost increases.

US 10-2047934 B

An object of the present invention is to provide a pipe coupling member using a flare portion and a method for manufacturing the same.

In order to achieve the above object, the pipe coupling member according to an embodiment of the present invention includes a main body and a main body having a first main body flare connected to one end of the main body body. Here, the main body is integrally formed without welding, and the first main body flare part is formed perpendicular to the main body body by flaring a mother body having a larger length than the main body body, and the first main body flare part is at least One hole is formed, and the pipe coupling member and the pipe are inserted by inserting a fixing member into the hole of the first body flare part and the hole of the flare part of the external pipe to be coupled with the pipe coupling member without using a separate flange member. this is combined

A pipe coupling member according to another embodiment of the present invention includes: a body having a body body and a body flare part connected to one end of the body body; and an angle correcting member arranged on the main body under the first main body flare part. Here, the body flare part is tapered by a predetermined angle, the angle correction member is tapered at an angle supplementing the angle, at least one hole is formed in the body flare part, and at least one hole is formed in the angle correction member A hole is formed, and the pipe coupling member and the external pipe are coupled by inserting a fixing member into the hole of the angle correcting member, the hole of the main body flare part, and the hole of the flare part of the external pipe, and the angle correcting member is the body flare There is no gap between the angle correcting member and the body flared portion by compensating for the negative tapered angle.

The method for manufacturing a pipe coupling member according to an embodiment of the present invention comprises the steps of inserting a core member to which opening and closing parts are coupled into an internal space of a body having a body body and body flare parts formed perpendicular to both ends of the body body; a space exists between the body body and the core member, one of the locking portions closes the space between the body body and the core member and the other opening and closing portion opens the space between the body body and the core member; sealing the space between the body body and the core member with the other opening and closing part after injecting plastic into the open space; compressing the plastic between the main body and the core by applying pressure to the inside of the core while the space between the main body and the core member is all sealed; and transferring heat to the compressed plastic by applying heat from the outside of the body to the body in a compressed state to form a liner inside the body. Here, the main body is integrally formed without welding, and the main body flare part is formed perpendicular to the main body body by flaring a mother body having a larger length than the main body body, and at least one hole is formed in the main body flare part. The pipe coupling member and the pipe are coupled by inserting a fixing member into the hole of the body flare part and the hole of the flare part of the external pipe to be coupled with the pipe coupling member without using a separate flange member.

The pipe coupling member according to the present invention is integrally formed through a flaring process without welding, and thus, labor and inspection costs due to welding are not required, so the overall construction cost can be reduced, mass production is possible, and maintenance and repair are easy can do.

In addition, since the pipe coupling member is coupled to other pipes by using a flared part having a hole without using a heavy flange member, the weight of the pipe coupling member may be reduced and costs may be reduced.

In addition, since the tapering phenomenon of the main body flare portion of the pipe coupling member that may occur during the flaring process is compensated by using an angle correcting member, the pipe coupling member can be stably coupled with other pipes with high fastening strength.

1 is a view showing a general pipe.
2 to 4 are views showing various pipe coupling members according to an embodiment of the present invention.
5 is a view illustrating a process of forming a flare portion according to an embodiment of the present invention.
6 is a view illustrating a coupling structure of a pipe coupling member and an external pipe according to an embodiment of the present invention.
FIG. 7 is a view showing the bolt fastening structure of FIG. 6 .
8 is a view showing a coupling structure of a pipe coupling member and an external pipe according to another embodiment of the present invention.
9 is a view showing the bolt fastening structure of FIG.
10 is a diagram illustrating a liner forming process according to an embodiment of the present invention.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps. In addition, terms such as "...unit" and "module" described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software, or a combination of hardware and software. .

The present invention relates to a pipe coupling member and a method for manufacturing the same, and can be coupled to other pipes using a flare part without using a flange member and a welding process. Here, the pipe coupling member collectively refers to all members coupled to the external pipe using the flare part, and may be, for example, a pipe having a flare part or a fitting (fitting).

Existing piping or fittings were welded with stubs and bends and joined with other piping using flange members, and a welding inspection process was essentially performed. As a result, labor and inspection costs for welding increased, resulting in an increase in overall construction cost, difficult maintenance and repair, and impossible to mass-produce.

In addition, since a heavy flange member is used, the pipe or the fitting is inevitably heavy.

On the other hand, the pipe coupling member of the present invention can be coupled to an external pipe by forming a flared part through a flaring process without a welding process, and forming a hole in the flared part itself without using a flange member. That is, welding and heavy flange members are not used, and as a result, mass production of the pipe coupling member is possible, and labor and inspection costs due to welding are not required, thereby reducing the overall facility cost and reducing the weight of the pipe coupling member. can

In addition, the construction of the pipe coupling member may be convenient, and maintenance and repair may be simple.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 to 4 are views illustrating various pipe coupling members according to an embodiment of the present invention, and FIG. 5 is a view illustrating a process of forming a flared part according to an embodiment of the present invention. 6 is a view showing a coupling structure of a pipe coupling member and an external pipe according to an embodiment of the present invention, and FIG. 7 is a view showing the bolt fastening structure of FIG. 6 . 8 is a view showing a coupling structure of a pipe coupling member and an external pipe according to another embodiment of the present invention, FIG. 9 is a view showing the bolt fastening structure of FIG. 8, and FIG. 10 is an embodiment of the present invention It is a view showing a liner forming process according to the.

Referring to FIG. 2 , the pipe coupling member of this embodiment may include a body 200 and a liner 202 .

The body 200 may be formed of, for example, a metal, and may include a body body 210 , a first body flare part 212 , and a second body flare part 214 . Meanwhile, the body 200 may be formed of plastic having a metal member therein.

A fluid transfer hole 250 that is a space through which a fluid flows may be formed in the body body 210 .

The first body flared part 212 is formed, for example, perpendicular to one end of the body body 210 , and the second body flared part 214 is formed, for example, perpendicular to the other end of the main body body 210 . can be

According to one embodiment, the body flare parts 212 and 214 may be formed perpendicular to the body body 210 by flaring a longer parent body than the body body 210 .

Specifically, as shown in FIG. 5 , after vertically deforming one end of the mother body 500 using a machine, a hole 230 is machined in the vertical portion 502 to form the first body flare portion 212 . can be formed Then, after the other end of the mother body 500 is vertically deformed using a machine, a hole may be machined in the vertical portion to form the second body flare portion 214 . To this end, the mother body 500 may have a length wider than the body body 210 by the width of the body flare parts 212 and 214 .

At this time, the width of the body flare portion 212 or 214 is larger than the width of the conventional stub end, for example, may be similar to the width of the flange member of the conventional pipe.

The liner 202 is formed inside the body 200 and directly contacts the fluid flowing through the fluid transfer hole 250 .

According to one embodiment, the liner 202 may be formed of a fluororesin. Fluorine resin is a generic term for resins containing fluorine in a molecule. Tetra fluoro ethylene perfluoro alkylvinyl ether copolymer (PFA), polytetrafluoroethylene (PTFE), polyclotripolyethylene (PCTFE), polyvinylidene fluoride (PVDF), or the like. This fluororesin has excellent heat resistance, chemical resistance, electrical insulation, a small coefficient of friction, and no adhesion and adhesion.

In addition, the liner 202 may be formed of polyethylene (Poly Ethylene, PE) or polypropylene (PP).

The liner 202 corresponds to the liner body 220 corresponding to the main body 210, the first liner flared portion 222 corresponding to the first body flared portion 212, and the second body flared portion 214 corresponding to the main body body 210. It may include a second liner flare portion 224 .

In this case, the liner body 220 is located inside the body body 210 , and the liner flare parts 222 and 224 are exposed to the outside of the corresponding body flare part 212 or 214 . That is, the liner flare portions 222 and 224 may be formed vertically from the liner body 220 .

According to an embodiment, a hole 232 may be formed in each of the liner flares 222 and 224 . These holes 232 are used for pipe coupling, as will be described later.

At this time, the first body flared part 212 and the first liner flared part 222 form one flared part 240 , and the second body flared part 214 and the second liner flared part 224 are Another flare portion may be formed.

In summary, the pipe coupling member of the present embodiment forms the body flare parts 212 and 214 through a flaring process and is used for coupling with an external pipe. Therefore, no flange member and welding process are required.

A conventional pipe includes a flange member, and the pipe and the other pipe are coupled by inserting a bolt into the hole of the flange member and the hole of the flange member of the other pipe. At this time, the width of the stub end is small and no hole is formed.

On the other hand, the pipe coupling member of this embodiment may be coupled with other external pipes using the flare part 240 without using a flange member. For this purpose, holes 230 or 232 are formed in the body flare part 212 or 214 and the liner flare part 222 or 224, respectively, and the bolt is inserted into the holes 230 and 232 and the hole of the flare part of the external pipe. The pipe coupling member may be coupled to the external pipe.

In order not to use the flange member, the width of the body flare part 212 or 214 is formed to be larger than the width of the stub end of the conventional pipe, and the number of holes 230 is designed to be larger than the number of holes of the flange member of the conventional pipe. In addition, the hole of the body flare part 212 or 214 may be arranged by making abrupt contact with the fluid transfer hole 250 rather than the hole of the flange member of the conventional pipe. That is, the distance between the hole of the body flare part 212 or 214 and the fluid transfer hole 250 may be smaller than the distance between the hole of the flange member of the conventional pipe and the fluid transfer hole. The number and arrangement of these holes is to further increase the fastening strength because a flange member is not used.

Such a pipe coupling member may have a curved shape as shown in FIG. 3, although the body body 210 may have a straight shape as shown in FIG. 2 . In addition, the main body may have a 'T' shape as shown in FIG. 4 . In the case of a 'T'-shaped pipe coupling member, body flare parts may be formed at three ends of the body body, respectively.

Meanwhile, although it is illustrated that the liner 202 is formed inside the body 200 from above, the liner 202 may not be formed.

Hereinafter, the coupling process of the pipe coupling member and the external pipe of this embodiment will be described with reference to FIGS. 6 to 9 . For convenience of description, it will be assumed that the external pipe also has the same structure as the pipe coupling member, and that the liner is not formed on the pipe coupling member. Also, only one of the body flare portions is shown.

As shown in FIG. 6 , the pipe coupling member of this embodiment may be coupled to an external pipe.

Specifically, a hole 230a is formed in the body flare part 214a connected to the end of the body body 210a of the pipe coupling member, and the body flare part connected to the end of the body body 210b of the external pipe ( A hole 230b may be formed in the 212b), a gasket 620 may be arranged between the pipe coupling member and the external pipe, and a hole 620 may be formed in the gasket 620 .

When the metal body flare parts 214a and 212b directly contact, the sealing effect to prevent the fluid flowing through the fluid transfer hole 250 from going out is reduced, so that the gasket 620 is attached to the body flare parts 214a and 212b. ) to improve the sealing effect.

In addition, when the pipe coupling member and the external pipe include a liner, if the liners are separated after contacting them without the gasket 620 , the liners may be crushed. Therefore, in order to prevent this phenomenon, the pipe coupling member and the external pipe A gasket 620 may be inserted between the pipes.

In order to couple the pipe coupling member, the gasket 600, and the external pipe, a fixing member, for example, a bolt 610, is used with a first washer 612, a hole of the body flare part 214a of the pipe coupling member ( 230a), the hole 620 of the gasket 620, the hole 230b of the body flare part 212b of the external pipe, and the second washer 614 are passed, and then the bolt 610 is fixed with a nut 616. can do it When combined in this way, the pipe coupling member and the external pipe may be coupled as shown in the lower right of FIG. 6 .

However, since the body flare part 214a or 212b is formed vertically through the flaring process, the thickness may decrease toward the end of the body flare part 214a or 212b, that is, the body flare part 214a or 212b has a predetermined thickness. It can be tapered at an angle. As a result, as shown in FIG. 7 , the bolt 610 or the washer 612 or 614 may not be in close contact with the body flare portion 214a or 212b and may be tilted at a specific angle, and the surface of the bolt 610 is the main body. It may not be formed parallel to the flared portion 214a or 212b.

That is, a gap (a or b) may be formed between the body flare part (214a or 212b) and the bolt (610) or washer (612 or 614), and thus the coupling strength of the pipe coupling member and the pipe may be weakened. have. However, even if there is such a gap (a or b), it may not be a problem in a system in which a low pressure fluid flows.

However, since it may be a problem in a system in which a high-pressure fluid flows, it is necessary to supplement the gap (a or b).

Accordingly, the pipe coupling member of the present embodiment may additionally use the first angle correcting member 800 as shown in FIG. 8 , and the external pipe may additionally use the second angle correcting member 802 as shown in FIG. 8 . Specifically, the first angle correcting member 800 is installed on the main body body 210a on the lower portion of the main body flare portion 214a, and the second angle correcting member 802 is installed on the main body body 210b on the main body flare portion (210b). 212b) may be installed in the lower part. In this case, the angle correcting members 800 and 802 may be separable from the corresponding body body 210a or 210b, and a hole 810 or 812 may be formed on the angle correcting members 800 and 802 , respectively. .

In order to couple the pipe coupling member, the gasket 600 and the pipe, the bolt 610 is attached to the first washer 612, the hole 810 of the first angle correcting member 800, and the body flare part 214a. The hole 230a, the hole 620 of the gasket 620, the hole 230b of the main body flare part 212b, the hole 812 of the second angle correcting member 802, and the second washer 614 were inserted into the hole 230a. After that, the bolt 610 may be fixed with a nut 616 . When coupled in this way, the pipe coupling member and the pipe may be coupled as shown in the lower right of FIG. 8 .

In this case, even if the body flare portion 214a or 212b is tapered, it may be compensated by the angle correcting member 800 or 802 .

Specifically, the angle correcting member 800 or 802 may be tapered at an angle supplementing the tapered angle of the body flared portion 214a or 212b. For example, when the body flare portion 214a or 212b is tapered by 45 degrees, the angle correcting member 800 or 802 may be tapered by 135 degrees, which is a complementary angle. As a result, there is no gap between the angle correcting member 800 or 802 and the body flared portion 214a or 212b, and one of the faces of the angle correcting member 800 or 802 abuts the body flared portion 214a or 212b. The surface opposite to the body may be formed perpendicular to the main body 210a or 210b.

Accordingly, as shown in FIG. 9 , the surface of the bolt 610 or the first washer 612 and the non-tapered surface of the first angle correcting member 800 may be in close contact, and the non-tapered second angle correcting member may be in close contact. The surface of the 802 and the second washer 614 or the nut 616 may be in close contact. As a result, the coupling strength between the pipe coupling member and the external pipe may be increased.

The angle correcting member 800 or 802 may be formed of metal, and although the thickness may vary depending on the taper angle of the body flare portion 214a or 212b, it is basically formed thinner than the flange member of the existing pipe.

In summary, the pipe coupling member of this embodiment forms the body flare part 212 or 214 perpendicular to the body body 210 through a flaring process, but an angle that compensates for the taper angle of the body flare part 212 or 214 By additionally using the tapered angle correcting member 800 , it is possible to strengthen the coupling strength between the pipe coupling member and the external pipe.

Hereinafter, a process of forming the liner 202 in the pipe coupling member will be described.

Referring to FIG. 10 , the main body 200 is prepared, the main body flare parts 212 and 214 of the main body 200 are fixed with jigs 1000 and 1002, and then the opening and closing part 1004 is coupled to the core member 1006. can be inserted into the body 200 . At this time, the opening/closing part 1004 may seal the main body 200 while being placed on the jig 1000 or 1002 . Here, the opening/closing part 1004 may be flexible.

Then, one of the two ends of the body 200 is covered with the clamping member 1008 and the other end is not covered with the clamping member.

Subsequently, the opening/closing part 1004 sealing one end of the body 200 not covered with the clamping member is opened, and then plastic, which is a raw material of the liner, is inserted between the inner surface of the body 200 and the core member 1006. can be injected into space. At this time, since the other end of the body 200 is blocked by the clamping member 1008, the plastic does not leak to the outside.

Next, the end of the opened main body 200 is covered with the opening/closing part 1004 , and another clamping member is covered on the opening/closing part 1004 . As a result, the body 200 may be entirely sealed while the plastic is included in the body 200 .

Subsequently, hydraulic pressure, pneumatic pressure, or the like may be applied to the inside of the core member 1006 through the clamping members. As a result, as the core member 1006 expands, the plastic is compressed and can be in close contact with the inner surface of the body 200 .

Then, when the core member 1006 and the opening/closing part 1004 are disassembled from the main body 200 and then the main body 200 is heat-treated, the liner 202 may be formed in the main body 200 .

Of course, the liner 202 may be formed in the body 200 through another process.

On the other hand, the components of the above-described embodiment can be easily grasped from a process point of view. That is, each component may be identified as a respective process. In addition, the process of the above-described embodiment can be easily understood from the point of view of the components of the apparatus.

The above-described embodiments of the present invention have been disclosed for the purpose of illustration, and various modifications, changes, and additions will be possible within the spirit and scope of the present invention by those skilled in the art having ordinary knowledge of the present invention, and such modifications, changes and additions should be regarded as belonging to the following claims.

200: body 202: liner
210: body body 212: first body flare part
214: second body flare part 220: liner body
222: first liner flare part 224: second liner flare part
240: flare part 250: fluid transfer hole

Claims (9)

delete delete delete delete delete delete delete delete Inserting a core member to which the opening and closing parts are coupled into an internal space of a body having a body body and body flare parts formed perpendicular to both ends of the body body, a space exists between the body body and the core member, one of the opening and closing portions closes the space between the body body and the core member and the other opening and closing portion opens the space between the main body and the core member;
sealing the space between the main body and the core member with the other opening and closing part after injecting plastic into the open space;
compressing the plastic between the main body and the core member by applying pressure into the core member while the space between the body body and the core member is all sealed; and
In a state in which the plastic is compressed, heat is transferred to the compressed plastic by applying heat from the outside of the body to the body to form a liner inside the body,
The main body is integrally formed without welding, and the main body flare part is formed perpendicular to the main body body by flaring a mother body having a larger length than the main body body,
At least one hole is formed in the body flare part, and the pipe coupling member by inserting a fixing member into the hole of the body flare part and the hole of the flare part of the external pipe to be coupled with the pipe coupling member without using a separate flange member. And the pipe coupling member manufacturing method, characterized in that coupled to the external pipe.

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