KR101734333B1 - Combination method of pipe and fitting - Google Patents

Combination method of pipe and fitting Download PDF

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Publication number
KR101734333B1
KR101734333B1 KR1020150154913A KR20150154913A KR101734333B1 KR 101734333 B1 KR101734333 B1 KR 101734333B1 KR 1020150154913 A KR1020150154913 A KR 1020150154913A KR 20150154913 A KR20150154913 A KR 20150154913A KR 101734333 B1 KR101734333 B1 KR 101734333B1
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KR
South Korea
Prior art keywords
pipe
fitting
marking
hole
straight pipe
Prior art date
Application number
KR1020150154913A
Other languages
Korean (ko)
Inventor
김용근
Original Assignee
(주)성광
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)성광 filed Critical (주)성광
Priority to KR1020150154913A priority Critical patent/KR101734333B1/en
Priority to PCT/KR2016/004489 priority patent/WO2017078231A1/en
Application granted granted Critical
Publication of KR101734333B1 publication Critical patent/KR101734333B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/082—Non-disconnectible joints, e.g. soldered, adhesive or caulked joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/02—Welded joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe

Abstract

The present invention relates to a method of coupling a fitting pipe and a pipe and, more specifically, relates to a method of coupling a fitting pipe and a pipe by easily positioning the fitting pipe and the pipe in a hole. According to the present invention, the method of coupling the fitting pipe and the pipe comprises: a step of marking a hole for a straight pipe; a step of marking a fitting pipe; a step of setting a central axis; a step of fixating; and a step of welding wherein the step of marking a fitting pipe includes a step of installing the fitting pipe, a step of rotating, a step of measuring, and a step of marking. Accordingly, the present invention is able to prevent disorder of the central axis of the fitting pipe caused by welding in a manner which fixates and welds the straight pipe, and a fitting pipe having the same central axis.

Description

Combination method of pipe and fitting

The present invention relates to a method of joining a fitting pipe and a pipe, and more particularly, to a fitting method of a fitting pipe and a pipe capable of easily positioning and fitting the fitting pipe in the hole of the pipe.

Generally, a large number of pipes are used as a means for transporting fluid such as liquid or gas. These pipes consist of a large-diameter pipe serving as a main supply passage to a supplier or a joining point and a small-diameter fitting pipe from a consumer or branch point have.

In order to connect the fitting pipe to the main supply pipe, a hole is drilled in the pipe and the fitting pipe is welded to the hole, or a joint for connection is used.

In the process of welding the fitting tube to the hole of the pipe, it is necessary to align the welded portion of the pipe with the welded portion of the fitting pipe to check whether the central axis of the pipe and the upper surface of the fitting pipe are horizontal, There is a problem in that the number of working hours and the number of the workers increases due to the fixing operation which is confirmed to continuously maintain the parallel state of the broken fitting pipe.

Registration No. 10-1068287 (registered on September 21, 2011) Registration No. 10-1489711 (Registration date January 29, 2015) Published Utility Model No. 20-2014-0006149 (published on December 09, 2014)

The present invention is intended to solve the above problems. It is an object of the present invention to provide a fitting method of a fitting pipe and a pipe which can easily fit the central axis of the hole formed in the upper face of the straight pipe and the central axis of the fitting pipe when the fitting pipe and the straight pipe are combined.

A method of joining a fitting pipe and a pipe according to the present invention includes the steps of: marking the highest point and the lowest point of the hole of the straight pipe welded to the fitting pipe; marking the highest point and the lowest point of the welded portion of the fitting pipe; A center point of the center pipe of the pipe pipe and a center of the fitting pipe are aligned by aligning the lowest point of the pipe pipe with the highest point of the pipe pipe hole and the lowest point of the welded part of the pipe pipe, A fixing step of fixing the fitting tube to the straight pipe having a center axis aligned with the central axis in the center axis setting step and a welding step of welding the straight pipe pipe and the fitting pipe fixed in the fixing step, Wherein the fitting tube marking step includes a fitting tube mounting step, a rotating step, a measuring step, a marking step It includes. The fitting tube mounting step places the welding tube of the fitting tube on the rotating circular plate so as to face upward. The rotating step rotates the rotating disk so that the fitting tube, which is held in the fitting tube mounting step, can rotate. The measuring step measures the highest point and the lowest point of the welded portion of the fitting pipe to the position of the contactor which contacts the circumferential surface of the welded portion of the fitting pipe rotating in the rotating step and moves up and down by the circumferential surface of the welded portion of the fitting pipe. The marking step marks the highest point and the lowest point of the welded portion of the fitting tube measured in the measuring step.

Further, in the above method of joining the fitting pipe and the pipe, it is preferable that the straight pipe pipe marking step includes a hole peak marking step of the straight pipe and a hole bottom marking step of the straight pipe. In the hole peak marking step of the straight pipe pipe, a right angle contact is made at both ends of the straight pipe pipe to connect the contact points at both ends of the contact face to mark the highest point in the hole of the straight pipe. Wherein the hole bottom marking step of the straight pipe pipe uses an orthogonal vertical link to match the vertical link in one direction with the hole top point of the straight pipe and to mark the bottom point in the hole of the straight pipe which is in contact with the vertical link perpendicular to the one direction do.

According to the present invention, in the step of marking the straight pipe, marking the highest point and the lowest point of the hole of the pipe, marking the highest point and the lowest point of the welded portion of the fitting pipe in the fitting pipe marking step, The center axis of the straight pipe pipe and the center axis of the fitting pipe can be easily matched by aligning the lowest point of the straight pipe pipe and the highest point of the welded portion of the fitting pipe.

Further, according to the present invention, it is possible to prevent the central axis of the fitting tube from being disturbed by welding by fixing the straight pipe and the fitting pipe with their center axes aligned and then welding.

1 is a flow chart of an embodiment of a fitting method of a fitting pipe and a pipe according to the present invention.
Fig. 2 (a) is a flow chart of the step of marking the straight pipe holes in the embodiment shown in Fig. 1, and Fig. 2 (b) is a flow chart of the fitting pipe marking step of the embodiment shown in Fig.
3 is a conceptual view of the hole peak marking step of the straight pipe in the embodiment shown in Fig.
Fig. 4 (a) is a front view and (b) is a plan view of a conceptual view of one embodiment of the hole bottom marking step of the straight pipe in the embodiment shown in Fig.
5 is a conceptual diagram of another embodiment of the hole bottom marking step of the straight pipe in the embodiment shown in Fig.
6 is a conceptual view of the fitting tube marking step of the embodiment shown in FIG.
7 is a conceptual diagram of a central axis setting step of the embodiment shown in FIG.

1 to 7, a description will be given of an embodiment of a fitting method of a fitting pipe and a pipe according to the present invention.

A method of joining a fitting pipe and a pipe according to the present invention includes the steps of marking a straight pipe hole S10, marking a fitting pipe S20, setting a center axis S30, fixing the steel pipe S40, S50).

The straight pipe hole marking step S10 marks the highest point 16 and the lowest point 18 of the hole 13 of the straight pipe 10 welded to the fitting pipe 40. For this purpose, the straight pipe hole marking step S10 includes the hole peak marking step S11 of the straight pipe and the hole bottom marking step S13 of the straight pipe.

The hole peak marking step S11 of the straight pipe pipe connects the contact points of both ends of the contact surface by bringing the right angle member 21 into contact with both ends of the straight pipe pipe 10, , 16b. That is, when the rectangular member 21 is brought into contact with the straight pipe 10, the highest point of the straight pipe 10 is contacted. Then, the peaks at both ends of the straight pipe 10 can be known. The highest points 16a and 16b of the perforated hole 13 are marked on the upper surface of the straight pipe 10 when the uppermost point on both ends is connected.

The hole bottom marking step S13 of the straight pipe is used to align the first vertical link 24 in one direction with the vertexes 16a and 16b of the hole 13 of the straight pipe 10 And marks the bottoms 18a and 18b in the hole 13 of the straight pipe 10 in contact with the second vertical link 25 perpendicular to the first vertical link 24. The first vertical link 24 in one direction is parallel to the central axis 11 of the straight pipe 10 by using the orthogonal vertical link 23 and then the hole of the straight pipe 10 The both ends of the first vertical link 24 are made to coincide with the highest points 16a and 16b marked on the first link 13. Since the first vertical link 24 and the second vertical link 25 are scaled in the radial direction from the center, the first vertical link 4 is connected to the highest point of the hole 13 of the straight pipe 10 16a and 16b, and then the distance from the center to the highest points 16a and 16b can be measured and the center can be aligned. Mark the lowest points 18a and 18b in the hole 13 of the straight pipe 10 in contact with the second vertical link 25 which is perpendicular to the first vertical link 24.

An orthogonal vertical link for marking the lowest points 18a and 18b of the hole 13 of the straight pipe 10 can also be represented in a different form from the vertical link 23 described above. In another embodiment for marking the lowest point of the straight pipe 10, a first vertical link 34 of one direction of the vertical link 31, which is inserted into the hole 13 of the straight pipe 10 and contracts or expands, The first vertical link 34 is aligned with the highest point 16a of the hole 13 of the straight pipe 10 and the second vertical link 35 perpendicular to the first vertical link 34 is in contact with the hole of the straight pipe 10 (18a, 18b) are marked on the bottom surface (13). That is, the first vertical link 34 and the second vertical link 35, which are mounted on the reference link 33 so as to contract or expand radially, are inflated to connect the first vertical link 34 in one direction to the straight pipe 10, (16a, 16b) of the hole (13) of the hole (13). At this time, the first vertical link 34 and the second vertical link 35 are scaled in the axial direction (the direction of the arrow A) of the hole 13, and are in contact with the highest points 16a and 16b of the hole 13 The reference point can be set and leveled. When the first vertical link 34 of one direction is aligned with the highest points 16a and 16b of the hole 13 of the straight pipe 10, a second vertical link 35 perpendicular to the first vertical link 34 It is possible to mark the lowest points 18a and 18b in the hole 13 of the straight pipe 10 to be contacted.

The fitting tube marking step S20 marks the highest point 45 and the lowest point 47 of the weld 43 of the fitting tube 40. To this end, the fitting tube marking step S20 includes a fitting tube mounting step S21, a rotating step S23, a measuring step S25, and a marking step S27.

In the fitting tube mounting step S21, the welding portion 43 of the fitting tube 40 is mounted on the rotary disk 51 so as to face upward. That is, the fitting pipe 40 can be horizontally mounted on the rotary disk 51 with the upper part of the fitting pipe 40 facing downward. The rotating step S23 rotates the rotating circular plate 51 so that the fitting pipe 40, which is fixed in the fitting tube mounting step S21, can rotate. The measuring step S25 is a step of contacting the welded circumferential surface 44 of the fitting portion 40 of the fitting pipe 40 rotating in the rotating step S23 and contacting the contact portion 53 The highest points 45a and 45b and the lowest points 47a and 47b of the welded portion 43 of the fitting tube 40 are measured. That is, when the contactor 53 moving up and down by the welded peripheral surface 44 of the fitting tube 40 is moved up and down by the welded peripheral surface 44 of the fitting pipe 40 rotating, the height gauge 55 The position of the contactor 53 is confirmed. The highest points 45a and 45b and the lowest points 47a and 47b of the welded circumferential surface 44 of the fitting tube 40 can be found by the position of the contactor 53 identified by the height gauge 55. [ The marking step S27 marks the highest point 45 and the lowest point 47 of the weld 43 of the fitting tube 40 measured in the measurement step S25.

The center axis setting step S30 is to align the highest point 16 of the straight pipe hole 13 with the lowest point 47 of the welded portion 43 of the fitting pipe 40 and align the lowest point 18 of the straight pipe hole 13 The uppermost point 45 of the welded portion 43 of the fitting pipe 40 is aligned with the central axis 14 of the straight pipe pipe 13 and the center axis 41 of the fitting pipe 40.

The fixing step S40 fixes the fitting tube 40 to the straight pipe 10 whose center axis is aligned in the central axis setting step S30. The central axis 41 of the fitting pipe 40 is disturbed by welding heat of welding or contraction of the molten metal due to welding after welding when the welding is performed to join the straight pipe 10 and the fitting pipe 40, . The center shaft 14 of the hole 13 of the straight pipe 10 and the center shaft 41 of the fitting pipe 40 are constrained and fixed so as not to be disturbed.

The welding step S50 welds the fitting pipe 40 and the fixed straight pipe 10 in the fixing step S40.

In the conventional case, the fitting pipe is raised above the hole of the straight pipe, and then the center of the straight pipe hole and the center of the fitting pipe are visually confirmed. At the same time, the height of the edge of the straight pipe pipe and the lower portion of the fitting pipe are aligned, The lower edge of the pipe and the higher pipe of the fitting pipe were matched and the level was raised on the upper surface of the fitting pipe to confirm that the center axis of the pipe and the upper surface of the fitting pipe were leveled. Then, the welding work was carried out while the first worker welded and the second worker ascertained that the upper surface of the fitting pipe was in parallel with the central axis of the straight pipe. At this time, when the parallelism of the fitting pipe is disturbed by the welding heat of the welding, the wedge is inserted into the gap between the straight pipe and the fitting pipe, and the horizontal operation is confirmed at the level. As a result, the number of working hours and the number of workers increases, productivity is lowered, and the horizontal state is checked using the level, but there is a problem that it is difficult to accurately align the central axes or maintain the horizontal state.

However, in the case of this embodiment, by marking the highest point and the lowest point of the straight pipe 10 and the fitting pipe 40, respectively, and aligning the highest and lowest marks respectively marked on the straight pipe 10 and the fitting pipe 40, The center axis 14 of the hole 13 of the straight pipe 10 and the center axis 41 of the fitting pipe 40 can be aligned with each other. In addition, by fixing the straight pipe 10 and the fitting pipe 40 and then welding them, it is possible to prevent the central axis 41 of the fitting pipe 40 from being disturbed by welding.

10: straight pipe 11: center shaft
13: Hall 14: Center axis
16 (16a, 16b): peak 18 (18a, 18b): lowest point
21: Right angle 23: Vertical link
24: first vertical link 25: second vertical link
31: vertical link 33: reference link
34: first vertical link 35: second vertical link
40: Fitting tube 41: Center axis
43: welding portion 44: circumferential surface
45 (45a, 45b): peak 47 (47a, 47b): lowest point
51: rotating disk 53: contact
55: Height gauge

Claims (2)

An in-line pipe hole marking step of marking the highest point and the lowest point of the hole of the straight pipe welded to the fitting pipe,
A fitting tube marking step of marking the highest point and the lowest point of the welding portion of the fitting tube;
A center axis setting step of aligning the highest point of the straight pipe pipe with the lowest point of the welding part of the fitting pipe and aligning the lowest point of the straight pipe pipe with the highest point of the welded part of the fitting pipe to align the center axis of the straight pipe pipe with the center axis of the fitting pipe Wow,
A fixing step of fixing the fitting pipe to the straight pipe having a central axis aligned in the center axis setting step,
And a welding step of welding the fixture pipe and the fitting pipe fixed in the fixing step,
The fitting tube marking step
A fitting tube mounting step of mounting the fitting tube on the rotary disk so that the welded part of the fitting tube faces upward;
A rotating step of rotating the rotating disk so that the fitting tube, which is held in the fitting tube mounting step, can rotate;
A measuring step of measuring a maximum point and a minimum point of the welded portion of the fitting pipe to a position of a contact which contacts the circumferential surface of the welded portion of the fitting pipe rotating in the rotating step and moves up and down by the circumferential surface of the welded portion of the fitting pipe;
And a marking step of marking the highest point and the lowest point of the welded portion of the fitting pipe measured in the measuring step. The method of claim 1, wherein the step of marking the straight pipe
A hole peak marking step of the straight pipe pipe which contacts a right angle to both ends of the straight pipe pipe to connect the contact points of both ends of the contact face to mark the highest point in the hole of the straight pipe,
Marking a hole bottom mark of an intu- ital pipe that marks the lowest point in the hole of the straight pipe that is in contact with the vertical link perpendicular to the one direction and the vertically- And the pipe is connected to the pipe.
KR1020150154913A 2015-11-05 2015-11-05 Combination method of pipe and fitting KR101734333B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150154913A KR101734333B1 (en) 2015-11-05 2015-11-05 Combination method of pipe and fitting
PCT/KR2016/004489 WO2017078231A1 (en) 2015-11-05 2016-04-29 Method for coupling fitting pipe and pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150154913A KR101734333B1 (en) 2015-11-05 2015-11-05 Combination method of pipe and fitting

Publications (1)

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KR101734333B1 true KR101734333B1 (en) 2017-05-11

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WO (1) WO2017078231A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109138450A (en) * 2018-10-19 2019-01-04 防城港中重工有限公司 Reducer pipe space articulation mouth intersection localization method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011220413A (en) 2010-04-07 2011-11-04 Aron Kasei Co Ltd Method for connecting branch pipe for connecting branched pipe, and guide member for connecting branch pipe used for the same

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Publication number Priority date Publication date Assignee Title
JPH08193685A (en) * 1995-01-13 1996-07-30 Sekisui Chem Co Ltd Branched pipe joint and its execution method
JPH09101056A (en) * 1995-10-02 1997-04-15 Takenaka Komuten Co Ltd Branch-pipe device for connection in air-conditioning duct
ATE344115T1 (en) * 2001-06-15 2006-11-15 Josch Strahlschweisstechnik Gm BASE BODY MADE OF JOINED PIECES OF PIPE AND METHOD FOR PRODUCING IT
JP2004036766A (en) * 2002-07-03 2004-02-05 Isuzu Kogyo Kk Branch pipe joint
KR20130087695A (en) * 2012-01-30 2013-08-07 드림산업 주식회사 Ramification pipe and manufacturing method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011220413A (en) 2010-04-07 2011-11-04 Aron Kasei Co Ltd Method for connecting branch pipe for connecting branched pipe, and guide member for connecting branch pipe used for the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109138450A (en) * 2018-10-19 2019-01-04 防城港中重工有限公司 Reducer pipe space articulation mouth intersection localization method
CN109138450B (en) * 2018-10-19 2020-08-18 防城港中一重工有限公司 Method for positioning intersection line of space butt joint interface of reducer pipe

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