KR20120118699A - Sleeve type flange for fixing pipes - Google Patents

Sleeve type flange for fixing pipes Download PDF

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Publication number
KR20120118699A
KR20120118699A KR1020110036231A KR20110036231A KR20120118699A KR 20120118699 A KR20120118699 A KR 20120118699A KR 1020110036231 A KR1020110036231 A KR 1020110036231A KR 20110036231 A KR20110036231 A KR 20110036231A KR 20120118699 A KR20120118699 A KR 20120118699A
Authority
KR
South Korea
Prior art keywords
flange
pipe
sleeve
pipes
welding
Prior art date
Application number
KR1020110036231A
Other languages
Korean (ko)
Inventor
강상모
Original Assignee
강상모
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 강상모 filed Critical 강상모
Priority to KR1020110036231A priority Critical patent/KR20120118699A/en
Publication of KR20120118699A publication Critical patent/KR20120118699A/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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/08—Joints with sleeve or socket with additional locking means
    • 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
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • F16L23/026—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes by welding
    • 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
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
    • 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
    • F16L23/00—Flanged joints
    • F16L23/16—Flanged joints characterised by the sealing means
    • F16L23/162—Flanged joints characterised by the sealing means the pipe ends abutting each other

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)

Abstract

The present invention relates to a sleeve-type flange for connecting pipes, and more particularly, to a sleeve having a certain length extending to one side of a flange for connecting two pipes, and the distal ends of the two pipes in the sleeve on one side of the flange It relates to a sleeve-like flange for pipe connection, whereby the joints where the two flanges meet and the joints where the two pipes meet are not coplanar.
According to the present invention, the welding work between the pipe and the flange is reduced in half compared to the conventional flange connection method, thereby reducing the manufacturing cost, and since the two pipes meet inside the sleeve, the pipe joint can be cut because it can support the force applied to the pipe There is an effect that can prevent the bending.

Description

Sleeve type flange for pipe connection {SLEEVE TYPE FLANGE FOR FIXING PIPES}

The present invention relates to a sleeve-type flange for connecting pipes, and more particularly, to a sleeve having a certain length extending to one side of a flange for connecting two pipes, and the distal ends of the two pipes in the sleeve on one side of the flange It relates to a sleeve-like flange for pipe connection, whereby the joints where the two flanges meet and the joints where the two pipes meet are not coplanar.

Sleeves or flanges are generally used to connect two pipes to extend water pipes or power line pipes.

Pipes that allow fluid to flow or embed wires are often circular in cross section, and for the convenience of on-site installation, after manufacturing the pipes for manufacturing short pipes with a certain length and joints in the factory, plating or painting them. It is installed in place of the site such as a ship or a ship.

The simplest of the pipe joints is the sleeve.

1 is a perspective view showing the structure of a sleeve for pipe connection according to the prior art, Figure 2 is a perspective view showing the internal structure of the sleeve of Figure 1, Figure 3 is a cross-sectional view showing the internal structure of the sleeve of FIG.

In order to connect the two pipes 10 and 20 using the sleeve 100, the pipes 10 and 20 are respectively pushed into the sleeve 100 on both sides of the sleeve 100, and the sleeves are welded from the outside. 100) and the pipes 10 and 20 are fixed. The sleeve 100 is a hollow pipe, the inner diameter of which is equal to or slightly larger than the outer diameter of the pipes 10, 20.

In the case of using the sleeve 100, two pipes 10, 20 meet at the middle of the sleeve 100, where the joints of the pipes 10, 20 are located. Then, both end faces of the sleeve 100 and the outer surfaces of the pipes 10 and 20 are fillet welded. Accordingly, two weld lines 102 and 104 are formed in the sleeve 100 and the pipes 10 and 20.

However, the biggest problem of the sleeve type joint device is that one of the sleeves 100 should be welded at the site where the installation work takes place by connecting the pipes 10 and 20. Since welding in the field requires the direct movement of the welder and the welding device, good welding quality cannot be expected in a narrow and poor working environment. In addition, the schedule required for installation on site is long, and when a defect occurs during use and repair or repair is required, it is difficult to dismantle, so it is used only for penetrating or necessary parts.

Flange is widely used in the field.

Figure 4 is a perspective view showing the structure of the flange for pipe connection according to the prior art, Figure 5 is an exploded perspective view showing the structure of the flange of Figure 4, Figure 6 is a cut perspective view showing the internal structure of the flange of Figure 4, 4 is a cross-sectional view showing the internal structure of the flange of FIG.

When the flange 200 is used, the first flange 202 and the second flange 204 are inserted with the gasket 206 inserted at both ends of the pipes 10 and 20, and then the center hole of the flange 200 is inserted. Fillet welding the inner surface and the thickness portions of the pipes (10, 20), and fillet welding the portion where the outer surface of the flange 200 and the outer surface of the pipes (10, 20) meet. Therefore, four weld lines 212, 214, 216, and 218 are formed in the flange 200 and the pipes 10 and 20.

The advantage of the flange 200 joint is that it can be completed quickly only by fastening the bolt 208 and the nut 210 without additional welding work during the field installation work, the repair or repair occurring during use is very convenient.

However, when connecting the pipes (10, 20) to the flange 200, the weld line is twice as large as the sleeve joint in one single pipe, the thickness or size of the flange 200 is too large to give the appropriate strength there was.

The present invention for solving the above problems minimizes the welding between the connecting device and the pipe, and effectively prevents bending moments that may occur in the joint of the pipe by placing the joint of the two pipes in a sleeve extending on one side of the flange. It is an object to provide a sleeved flange for pipe connection which can be countered.

The present invention devised to solve the above problems is a device for connecting the first pipe 10 and the second pipe 20 to each other, the through hole is in the center of the disc, a plurality of bolt fastening holes along the circumference A first flange 302 on which 302a is formed; A second flange 306 that is symmetrical with the first flange 302 and has a through hole formed in the center of the disc, and a plurality of bolt fastening holes 306a are formed along the circumference; It is formed integrally with the first flange 302 and extends in one side from the circumference of the through hole of the first flange 302 in parallel with the central axis, the first flange 302 and the second flange ( A cylindrical sleeve 304 in which a hollow having the same inner diameter as the inner diameter of the through hole formed in 306 is formed; And a gasket 308 inserted between surfaces in which the first flange 302 and the second flange 306 contact each other to maintain airtightness, and the distal end of the first pipe 10 includes the sleeve ( The first pipe 10 and the sleeve 304 are joined by welding in a state of being inserted into the hollow interior of the 304, and the distal end of the second pipe 20 is a through hole of the second flange 306. The second pipe 20 and the second flange 306 are joined by welding in a state where they penetrate through, and the distal end of the first pipe 10 and the distal end of the second pipe 20 are the sleeves. 304 is fixed in the inserted state.

A plurality of bolts 310 passing through the bolt fastening holes 302a and 306a formed in the first flange 302 and the second flange 306; And a plurality of nuts 312 screwed to the bolt 310, wherein the first flange 302 and the second flange 306 are formed of the bolt 310 and the nut 312. It is characterized by being tightly fixed by screwing.

A first weld line 314 is formed by fillet welding the end surface of the end of the sleeve 304 surrounding the outer surface of the first pipe 10 and the outer surface of the first pipe 10 to form the second flange. The second welding line 316 is formed by fillet welding the periphery of the center through hole 306 and the outer surface of the second pipe 20.

According to the present invention, the welding work between the pipe and the flange is reduced in half compared to the conventional flange connection method, thereby reducing the manufacturing cost, and since the two pipes meet inside the sleeve, the pipe joint can be cut because it can support the force applied to the pipe There is an effect that can prevent the bending.

1 is a perspective view showing the structure of a sleeve for pipe connection according to the prior art.
Figure 2 is a cut perspective view showing the internal structure of the sleeve of Figure 1;
3 is a cross-sectional view showing the internal structure of the sleeve of FIG.
Figure 4 is a perspective view showing the structure of a flange for pipe connection according to the prior art.
5 is an exploded perspective view showing the structure of the flange of FIG.
Figure 6 is a cut perspective view showing the internal structure of the flange of Figure 4;
7 is a cross-sectional view showing the internal structure of the flange of FIG.
8 is a perspective view showing the structure of a sleeve-type flange according to an embodiment of the present invention.
9 is an exploded perspective view showing the structure of the flange of FIG.
10 is a cut perspective view showing the internal structure of the flange of FIG.
11 is a cross-sectional view showing the internal structure of the flange of FIG.
12 is a perspective view showing the structure of a pipe with a sleeve flange.
13 is a cut perspective view showing the internal structure of the pipe of FIG.
14 is a cross-sectional view showing the internal structure of the pipe of FIG.

Hereinafter, with reference to the drawings will be described "sleeve flange for pipe connection" (hereinafter referred to as "flange") according to an embodiment of the present invention.

8 is a perspective view showing the structure of a sleeve-type flange according to an embodiment of the present invention, Figure 9 is an exploded perspective view showing the structure of the flange of Figure 8, Figure 10 is a cut perspective view showing the internal structure of the flange of Figure 8, Figure 11 is a cross-sectional view showing the internal structure of the flange of FIG.

Flange 300 of the present invention consists of three parts. Through-holes are formed in the center of the disk and are symmetrical to each other extending from the circumference of the through holes of the first flange 302 and the second flange 306 and the first flange 302 to one side in parallel with the central axis. A hollow cylindrical sleeve 304. The first flange 302 and the sleeve 304 are integrally formed.

The through hole formed in the middle of the two flanges 302 and 306 and the hollow inner diameter formed in the sleeve 304 are generally the same, and are made to be equal to or slightly larger than the outer diameter of the pipes 10 and 20 to be connected.

A plurality of bolt fastening holes 302a and 306a for fastening the bolt 310 and the nut 312 are formed along the circumference of the flanges 302 and 306.

The first flange 302 and the second flange 306 are coupled in contact with each other, the rubber, silicone, urethane-based gasket 308 is inserted between the two flanges (302, 306) to maintain airtightness . A through hole for passing the pipes 10 and 20 is also formed in the center of the gasket 308, and a plurality of bolting holes 308a are formed along the circumference.

The bolt 310 and the nut 312 are located on opposite sides of the first flange 302 and the second flange 306 and are screwed together while passing through the bolt fastening holes 302a, 306a, and 308a.

In order to couple the two pipes 10 and 20, first, the first flange 302 and the second flange 306 are coupled to the pipes 10 and 20.

A first flange 302 having a sleeve 304 is coupled to the end of the first pipe 10, and a second flange 306 having no sleeve 304 is coupled to the end of the second pipe 20.

First, as shown in FIGS. 10 and 11, the end of the first pipe 10 enters the middle portion of the sleeve 304. Then, the first weld line 314 is formed by fillet welding the end surface of the end of the sleeve 304 surrounding the outer surface of the first pipe 10 and the outer surface of the first pipe 10.

Then, the second pipe 20 passes through the through hole of the second flange 306 without the sleeve 304 so that the distal end portion extends by a predetermined length and around the central through hole of the second flange 306. Fillet welding the outer surface of the pipe 20 to form a second welding line (316).

The second welding line 316 formed on the second flange 306 may be formed on the opposite side of the second flange 306 instead of the surface facing the first flange 302.

In this case, the length of the second pipe 20 passing through the sleeve 304 is similar to the remaining length minus the length of the distal end portion of the first pipe 10 into the sleeve 304 out of the entire length of the sleeve 304. do. By doing so, when the first flange 302 and the second flange 306 are coupled to each other, the end of the first pipe 10 and the end of the second pipe 20 are in contact with each other at substantially the same position.

The two flanges 302 and 306 are coupled to the first pipe 10 and the second pipe 20 by fillet welding, respectively, and the two flanges 302 and 306 are bolted with the gasket 308 inserted. Since it is coupled by the 310 and the nut 312, the end of the pipe (10, 20) is finally connected.

In order to withstand the bending moment applied to the connection of the two pipes 10, 20, it is most preferable that the end of the second pipe 20 enters more than the center of the sleeve 304 to meet the end of the first pipe 10. However, if you meet at least one third of them, you will be able to make a difference.

As such, when the first flange 302 and the second flange 306 are coupled to each other, a virtual boundary surface formed where two flanges 302 and 306 meet and a virtual boundary surface of a joint where two pipes 10 and 20 meet. Will not match each other. Since the joints of the pipes 10 and 20 are positioned about the center of the sleeve 304, the bending moments applied to the pipes 10 and 20 are absorbed by the body of the sleeve 304 so that deformation or cutting does not occur. do.

Also, since the fastening of the flanges 302 and 306 is located outside the pipes 10 and 20, which are spaced apart from the joints of the pipes 10 and 20 by a certain distance, the bending moment at the joints of the flanges 302 and 306 The shear force does not have to be handled by the flanges 302 and 306, and can function as thinner and smaller in size than the flanges used in conventional flange joints.

12 is a perspective view showing the structure of a pipe with a sleeve flange, FIG. 13 is a cutaway perspective view showing the internal structure of the pipe of FIG. 12, and FIG. 14 is a cross-sectional view showing the internal structure of the pipe of FIG. 12.

Although the flange 300 of the present invention may be joined by welding to the pipes 10 and 20 in the field, the first flange 302 and the second flange 306 are coupled to both sides of one pipe 30, It may take a way to connect to the pipe 30 configured in the same way.

As shown in FIG. 12, the first flange 302 and the sleeve 304 are combined by fillet welding on one side of the pipe 30, and the second flange 306 is combined by fillet welding on the opposite side to form a unit pipe. . One end of the pipe 30 enters the inside of the sleeve 304 by a predetermined length, and the opposite end passes through the second flange 306 and comes out of the predetermined length.

Preferably, the length of one end of the pipe 30 into the sleeve 304 and the length of the opposite end through the second flange 306 are the same.

The pipe 30 manufactured as described above is combined to work with the bolt 310 and the nut 312 at the work site.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the above-described technical configuration of the present invention may be embodied by those skilled in the art to which the present invention pertains without changing its technical spirit or essential features of the present invention. It will be appreciated that the present invention may be practiced as. Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

10, 20, 30: pipe 100: sleeve
102, 104: welding seam 200, 300: flange
202, 302: first flange 204, 306: second flange
206, 308: Gasket 208, 310: Bolt
210, 312: nuts 212, 214, 216, 218: weld line
304: sleeve 314, 316: welding line

Claims (3)

An apparatus for connecting the first pipe 10 and the second pipe 20 to each other,
A first flange 302 having a through hole formed in the center of the disc and having a plurality of bolt fastening holes 302a formed along the circumference;
A second flange 306 that is symmetrical with the first flange 302 and has a through hole formed in the center of the disc, and a plurality of bolt fastening holes 306a are formed along the circumference;
It is formed integrally with the first flange 302 and extends in one side from the circumference of the through hole of the first flange 302 in parallel with the central axis, the first flange 302 and the second flange ( A cylindrical sleeve 304 in which a hollow having the same inner diameter as the inner diameter of the through hole formed in 306 is formed;
And a gasket 308 inserted between the surfaces of the first flange 302 and the second flange 306 contacting each other to maintain airtightness.
The first pipe 10 and the sleeve 304 are joined by welding in the state where the distal end of the first pipe 10 is inserted into the hollow interior of the sleeve 304,
The second pipe 20 and the second flange 306 are joined by welding while the distal end of the second pipe 20 passes through the through hole of the second flange 306.
The distal end of the first pipe (10) and the distal end of the second pipe (20) is fixed in the inserted state inside the sleeve (304), sleeve type flange for pipe connection. The method of claim 1,
A plurality of bolts 310 passing through the bolt fastening holes 302a and 306a formed in the first flange 302 and the second flange 306;
Further comprising; a plurality of nuts 312 screwed to the bolt 310,
The first flange (302) and the second flange (306) is characterized in that tightly fixed by screwing the bolt 310 and the nut (312), sleeve type flange for pipe connection. The method of claim 2,
Fillet welding the end surface of the end of the sleeve 304 surrounding the outer surface of the first pipe 10 and the outer surface of the first pipe 10 to form a first welding line 314,
A sleeve-type flange for pipe connection, characterized in that a fillet welded around the central through hole of the second flange (306) and the outer surface of the second pipe (20) to form a second welding line (316).
KR1020110036231A 2011-04-19 2011-04-19 Sleeve type flange for fixing pipes KR20120118699A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110036231A KR20120118699A (en) 2011-04-19 2011-04-19 Sleeve type flange for fixing pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110036231A KR20120118699A (en) 2011-04-19 2011-04-19 Sleeve type flange for fixing pipes

Publications (1)

Publication Number Publication Date
KR20120118699A true KR20120118699A (en) 2012-10-29

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KR1020110036231A KR20120118699A (en) 2011-04-19 2011-04-19 Sleeve type flange for fixing pipes

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104006240A (en) * 2014-06-06 2014-08-27 常州德日机械有限公司 Multifunctional flange plate
CN107883761A (en) * 2017-12-06 2018-04-06 江苏凤谷节能科技有限公司 Rotary kiln inner-tube structure
CN108599063A (en) * 2018-05-21 2018-09-28 深圳市沃尔核材股份有限公司 The connection method and connection structure of a kind of wind tower with two tube type bus
KR101957326B1 (en) * 2018-08-30 2019-06-19 주식회사 대신에스앤비 Coupling piping type solar collector
CN112983943A (en) * 2021-03-15 2021-06-18 苏州市诚键法兰制造有限公司 Low-temperature-resistant stainless steel flange and punching processing die thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104006240A (en) * 2014-06-06 2014-08-27 常州德日机械有限公司 Multifunctional flange plate
CN107883761A (en) * 2017-12-06 2018-04-06 江苏凤谷节能科技有限公司 Rotary kiln inner-tube structure
CN108599063A (en) * 2018-05-21 2018-09-28 深圳市沃尔核材股份有限公司 The connection method and connection structure of a kind of wind tower with two tube type bus
CN108599063B (en) * 2018-05-21 2024-01-05 深圳市沃尔核材股份有限公司 Connection method and connection structure of two tubular buses for wind power tower
KR101957326B1 (en) * 2018-08-30 2019-06-19 주식회사 대신에스앤비 Coupling piping type solar collector
CN112983943A (en) * 2021-03-15 2021-06-18 苏州市诚键法兰制造有限公司 Low-temperature-resistant stainless steel flange and punching processing die thereof
CN112983943B (en) * 2021-03-15 2024-05-07 苏州市诚键法兰制造有限公司 Low-temperature-resistant stainless steel flange and punching processing die thereof

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