KR20110110501A

KR20110110501A - Steel special joint unit

Info

Publication number: KR20110110501A
Application number: KR1020100029856A
Authority: KR
Inventors: 임상묵
Original assignee: 임상묵
Priority date: 2010-04-01
Filing date: 2010-04-01
Publication date: 2011-10-07

Abstract

The present invention relates to a joint of a metal pipe (hereinafter referred to as "steel pipe"), and in particular, made of a metal material and having a locking projection protruding at equal intervals on the outer periphery of the opening of both ends; In the outer side, a plurality of bolt insertion holes are formed at equal intervals and the outer periphery of the pipe opening is introduced. A fitting jig having a catching groove configured to be caught through rotation of the jig, and having a recess-shaped groove formed along the inner circumference of the entire inner surface thereof; A ring-shaped sealing member having a floating cross-sectional shape inserted into a space formed by a groove of the jig and an outer circumference of the pipe when the jig is fixed by a locking protrusion formed on the outer circumference of the pipe opening; And an outer side of the plurality of bolt insertion holes formed at equal intervals and having a ring-shaped thin ring-shaped packing ring having an inner diameter and an outer diameter equal to that of the sealing member. If you want to extend the length by abutting the steel pipe and then the two steel pipes can be connected only through the assembly process without the joining process, such as conventional welding used to fix the commonly used joint jig to the pipe. Only components that have been damaged) can be removed and replaced, resulting in cost and time savings.

Description

Steel Special Joint Unit {Steel special joint unit}

The present invention relates to a joint of a metal pipe (hereinafter referred to as 'steel pipe'), in particular to use to secure a joint jig commonly used in the case of extending the length by contacting the steel pipe and the steel pipe. The present invention relates to a steel pipe special joint apparatus for connecting two steel pipes contacted only through an assembly process without a welding process such as conventional welding.

In general, the flange for a joint pipe is used to connect pipes or valves of limited length to each other by being fixedly installed by welding along the entire outer circumference of the distal end of the pipe.

As shown in FIG. 1, the conventional flange for the fitting pipe is formed such that the pipe insertion hole 11 made of the same diameter as the outer diameter of the pipe 30 passes through the central portion of the flange 10 for the fitting pipe. In the outer side of the pipe insertion hole 11 formed to penetrate through, a plurality of bolt insertion holes are arranged at equal intervals.

The process of fixing the flange for the joint pipe configured as described above with reference to FIG. 2 is as follows.

Insert the distal end of the pipe 30 is limited to the inside of the pipe insertion port 11 formed to penetrate the central portion of the flange 10 for the fitting pipe, and the distal end of the pipe 30 of the inner diameter width of the pipe insertion port 11 After pushing to two-thirds point, the primary weld joint is joined along the entire circumference of the boundary portion where the outer periphery of the distal end of the pipe 30 and the inner periphery of the pipe insert 11 are in contact with each other.

Then, the final weld welding is performed along the perimeter of the boundary portion of the right angle where the outer surface of the flange 10 for the welded joint pipe 10 and the outer circumference of the pipe 30 meet each other.

In the state in which the welded joint flange 10 is welded as described above, the gasket 22 for preventing the leakage of fluid is fitted, and the flange 10 for the joint is closely contacted with each other, and then the plurality of arrays are formed at equal intervals. Fit the coupling bolt 20 with two bolt insertion holes.

The other side of the coupling bolt 20 inserted into the bolt insertion hole is to be fixed firmly using the nut (21).

However, in the inside of the flange 10 for the joint pipe made of the above process, the weld portion 31 is formed due to welding performed to permanently couple the pipe 30 and the flange 10 for the joint pipe. Because of the weld portion 31, the space portion 32 having a predetermined size is formed.

The space part 32 generates a vortex phenomenon or a water hammer (water hammering action: abnormal pressure generated when the flow velocity in the pipe changes abruptly, a phenomenon in which vibrations and high impact sounds occur) that hinders a smooth flow of the fluid, In addition, shortening the life of the pipe 30 and at the same time the sludge is accumulated in the space 32 to block the conduit, thereby causing a problem such as mechanical failure due to fail to transport the fluid to the destination smoothly.

Due to this phenomenon, the welded portion is substantially weak compared to other portions, and thus, the welded portion is easily damaged, and thus, the airtightness is lowered and fluid leakage occurs.

Moreover, even if the pipe itself is not a problem, if the leaked part is not repaired by re-welding or the like, a problem has been steadily raised, such as the need to replace the pipe.

An object of the present invention for solving the above problems relates to a joint device of a metal pipe (hereinafter referred to as 'steel pipe'), in particular when the steel pipe and the steel pipe abuts to extend the length is usually used The present invention provides a special steel pipe joint fitting for connecting two steel pipes to be contacted only through an assembly process without a joining process such as conventional welding used to fix a joint jig to a pipe.

Steel pipe special fittings according to the present invention for achieving the above object, the pipe is made of a metal material and having a locking projection protruding at equal intervals on the outer periphery of the opening of both ends; In the outer side, a plurality of bolt insertion holes are formed at equal intervals and the outer circumference of the pipe opening is drawn in, but the locking projection formed at the outer circumference of the pipe opening is inserted in the outer circumferential surface corresponding to the drawing direction of the pipe, and then the relative A fitting jig having a locking groove configured to be caught through rotation of a predetermined angle, and having a recess-shaped groove formed along an inner circumference of the entire inner surface thereof; A ring-shaped sealing member having a floating cross-sectional shape which is inserted into a space made by the groove of the joint jig and the outer periphery of the pipe when the joint jig is fixed by a locking protrusion formed on the outer periphery of the pipe opening; And an outer side of the packing ring having a plurality of bolt insertion holes formed at equal intervals and having a ring-shaped thin width having the same inner diameter and outer diameter as the sealing member.

An additional feature of the steel pipe special joint device according to the present invention for achieving the above object is that the sealing member is formed with a groove-shaped groove along the inner circumference along the inner circumference so as not to be pushed into the opening of the pipe abutting at the vertex portion There is.

Advantageous effects due to the above-described features of the present invention include joining treatments such as conventional welding used to fix a joint jig, which is commonly used when the steel pipe is to be brought into contact with the steel pipe, and then to extend the length. It is possible to connect two steel pipes to each other through the assembly process alone, thereby reducing the cost and time by separating and replacing only the component in which the problem (damaged airtightness) occurs.

1 is a partial side cross-sectional view showing a state in which a flange for a joint pipe is welded to the outer periphery of the distal end of a general pipe;
FIG. 2 is an enlarged cross-sectional view of part 'A' showing part 'A' of FIG. 1.
3 to 6 is a cross-sectional view showing a configuration and fastening process of the steel pipe special joint according to the present invention
Figure 7 is a cross-sectional view of the completed state of fitting using the steel pipe special joint according to the invention

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: FIG.

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

3 to 6 is a cross-sectional view showing a configuration and fastening process of the steel pipe special joint according to the present invention, Figure 7 is a cross-sectional view of the completion state of the fitting state using a steel pipe special joint according to the present invention to be.

Steel pipe special fittings according to the present invention, as shown, made of a metal material and has a pipe (100) having protrusions (110) protruding at equal intervals on the outer periphery of the openings; A plurality of bolt insertion holes (H) is formed at equal intervals in the outer side and the outer periphery of the opening of the pipe (100) is drawn in, but the pipe (100) is formed on the outer circumferential surface corresponding to the pulling direction of the pipe (100). After the engaging projection 110 formed on the outer periphery of the opening is inserted into the engaging groove 210 is configured to be caught through the rotation of a relatively predetermined angle, and has a non-shaped groove along the inner periphery on the entire inner surface ( A reference jig (200) is formed; When the joint jig 200 is fixed by the engaging protrusion 110 formed at the outer periphery of the opening of the pipe 100, the joint jig 200 is inserted into a space made by the groove of the joint jig 200 and the outer periphery of the pipe 100. Ring-shaped sealing member 300 having a floating cross-sectional shape; And the outer side is formed of a plurality of bolt insertion holes (H) formed at equal intervals and the packing ring 400 having a ring-shaped thin width having the same inner diameter and outer diameter as the sealing member 300.

At this time, the sealing member 300 is formed with a groove 310 having a floating shape along the inner circumference so as not to be pushed into the opening of the pipe which is in contact with the vertex.

Also preferably, the bolt insertion holes H are four, but in actuality, three to eight may be provided.

In addition, it is noted that the locking projections referred to by the reference numeral 110 are also the same.

At this time, the inner jig 200 has an inner diameter of one opening of which is the same as an outer diameter of the pipe 100, and an inner diameter of the other opening of which is equal to an outer diameter of the sealing member 300.

In addition, the inner diameter of the sealing member 300 is also the same as the outer diameter of the pipe 100, the cross-sectional shape has a floating ring shape of 90 ° angle between.

Looking at the configuration and fastening process of the steel pipe special joint according to the invention briefly, as shown in Figure 3, the opening of the pipe 100 is one end of the smaller inner diameter of the opening of the jig 200 It is inserted into and protrudes to the other end with a large internal diameter of an opening.

At this time, the engaging projection 110 protruding on the outer periphery of the pipe 100 is drawn as shown in Figure 4 attached along the engaging groove referred to by reference numeral 210 formed on the outer periphery of the fitting jig 200. After rotating the pipe 100 or the jig 200 is fixed as shown in Figure 5 attached.

Therefore, the locking groove 210 has a curved structure having a rotational structure with an opening side and a predetermined angle into which the locking protrusion 110 is introduced, thereby sliding inward to engage the locking groove 210 and the locking protrusion 110. As a result, the coupling between the pipe 100 and the fitting jig 200 is substantially performed.

Thereafter, the sealing member 300 is seated in the space formed by the pipe 100 and the fitting jig 200 to have a shape as shown in FIG. 6.

At this time, since the metal packing ring 400 is located between the sealing members 300, the sealing member 300 is prevented from being twisted during compression, thereby performing a smooth buffering effect. It performs a function to prevent the phenomenon of airtightness by exerting.

When two different pipes 100 having a coupling structure as described above are in contact with each other to maintain a passage therein, as shown in FIG. 6 attached to a packing ring referred to by reference numeral 400. A plurality of bolt insertion holes (H) formed at equal intervals on the outer side of the jig 200 and the outer side of the packing ring 400 to contact the opening of the two different pipes 100 having a coupling relationship to each other. Fasten using a bolt (B) and the nut (N) through a plurality of bolt insertion holes (H) formed at equal intervals.

The cross-sectional configuration of the state in which the fastening is completed through the fastening process is as shown in FIG. 7.

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone with it will know easily.

100: steel pipe 110: hook projection
200: Jig 210: Hanging groove
300: sealing 310: groove
400: Packing ring H: Bolt insertion hole
B: Bolt N: Nut

Claims

A pipe made of a metal material and having a locking protrusion protruding at equal intervals on the outer periphery of the openings at both ends;
In the outer side, a plurality of bolt insertion holes are formed at equal intervals and the outer circumference of the pipe opening is drawn in, but the locking projection formed at the outer circumference of the pipe opening is inserted in the outer circumferential surface corresponding to the drawing direction of the pipe, and then the relative A fitting jig having a locking groove configured to be caught through rotation of a predetermined angle, and having a recess-shaped groove formed along an inner circumference of the entire inner surface thereof;
A ring-shaped sealing member having a floating cross-sectional shape inserted into a space formed by a groove of the joint jig and an outer periphery of the pipe when the joint jig is fixed by a locking protrusion formed at an outer periphery of the pipe opening; And
In the outer side, a plurality of bolt insertion openings are formed at equal intervals, and the steel pipe special joint device characterized in that it comprises a ring-shaped packing ring having the same inner diameter and outer diameter as the sealing member.

The method of claim 1,
The sealing member has a special pipe fittings, characterized in that the groove is formed in a floating shape along the inner circumference so as not to be pushed into the opening of the pipe abutting on the vertex portion.