KR20120008737A

KR20120008737A - Flange engaging structure having water and oil leak prevention function

Info

Publication number: KR20120008737A
Application number: KR1020100069748A
Authority: KR
Inventors: 이동훈
Original assignee: 이동훈
Priority date: 2010-07-20
Filing date: 2010-07-20
Publication date: 2012-02-01

Abstract

The present invention relates to a pipe flange coupling structure having a leakage and leakage prevention function, in particular a small diameter or large diameter pipe for delivering a special fluid containing water or oil used in the engine room of a large ship or a large ship To prevent leakage and leakage through flange gaps more effectively, which can drastically increase the service life of the pipe, and also prevent leakage and leakage that can significantly reduce maintenance costs by reducing failures due to leakage and leakage. It relates to a pipe flange coupling structure having a function.

Description

Flange engaging structure having water and oil leak prevention function

In general, a large number of small-diameter and large-diameter pipes are installed in a large vessel, particularly in an engine room of a large vessel, to transfer various fluids including water or oil through the interior. In particular, many small and large diameter pipes are installed in industrial plants to deliver various chemicals including water or oil.

In interconnecting such small-diameter or large-diameter pipes, coupling structures using flanges, which are easy to install and maintain and which are economical, are widely used. Briefly describing a structure for connecting pipes using such flanges, the flanges having a diameter larger than the pipes are respectively formed at both ends of the pipes, and the corresponding one end of the flanges is brought into contact with the flanges of the other pipes facing each other. Insert a gasket to prevent leakage and leakage between two opposing flanges, and insert the bolt into a plurality of bolt holes formed in the flange and fasten it with a nut to engage each other.

This configuration and operation will be described in detail with reference to FIGS. 1 and 2 as follows.

Fig. 1 is a sectional view showing a pipe flange coupling structure according to the prior art, and Fig. 2 shows a configuration of a gasket for preventing leakage and leakage inserted between facing flanges in the pipe flange coupling structure according to the prior art. It is a perspective view.

1 and 2, one end of the pipe 10 constitutes a flange 20 larger than the diameter of the pipe, and another end of the pipe 10 'constitutes a flange 20' larger than the diameter of the pipe. do. The flanges 20 and 20 'are brought into close contact with each other, and a gasket member 30 is inserted between the flanges 20 and 20'. Each flange 20, 20 'forms a plurality of bolt holes 21 therethrough, inserts the bolt 40 into each of the bolt holes 21, and the nut 50 to the inserted bolt 40 By fastening the two pipes will be coupled to each other. In Figure 1, the English reference letter ID (Inner Diameter) means the inner diameter of the pipe.

In Fig. 2, the general gasket member 30 has a center member 31 having elasticity in the center, and side members bonded to both sides of the scattering member 31 using an adhesive A on both sides of the center member. (32, 32 ') and other ones of both sides of the side member not adhered to the sander member 31 are attached with thin and flat release papers 33, .33'.

In the center of the gasket member 30, a pipe hole 60 having the same diameter as the inner diameter ID of the pipe is formed, so that the center member 31, the size members 32 and 32 ', and the release paper 33 and 33' are formed. ) Will be penetrated sequentially. In addition, a plurality of bolt holes 21 are formed at predetermined intervals at an outer portion surrounding the pipe hole 60 of the gasket member 30. The bolt 40 is inserted through the bolt hole 21, and two opposite flanges 20 and 20 ′ are fastened as the nut 50 is fastened to one end of the bolt 40 to interconnect the pipes. Done.

However, in the conventional pipe flange coupling structure of such a configuration, there are the following problems.

In general, industrial pipes are installed inside a large ship or in an engine room of a large ship, or are installed inside an industrial factory to transfer water, oil, or fluid chemicals through the inside.

Inside such a pipe used in such a place flows chemicals in the form of various fluids, including water and oil. Since the fluids flow at high or high pressure, the gasket inserted between the flanges over time will lose the airtightness of the gasket by the high pressure or high temperature fluid as well as the service life. Due to the loss of airtightness of the gasket inserted between the flanges, the hot or high pressure fluid flowing inside the pipe leaks or leaks out through the flanges.

As a result of the leakage and leakage, the gasket fastened between the flanges is removed and replaced with a new gasket. This not only consumes a lot of money for the maintenance of the pipes, but also incurs a lot of economic losses in the case of stopping the operation of a large ship for repair in some cases.

Accordingly, a first object of the present invention is to provide a pipe flange coupling structure having a leakage and leakage prevention function that can effectively solve such a conventional problem.

The second object of the present invention is to form internal and external circular grooves on one surface of the flange integrally formed at one end of the pipe so that the high temperature or high pressure fluid flowing inside the pipe does not leak out, thereby greatly reducing the pipe maintenance cost. It is to provide a pipe flange coupling structure having a possible leakage and leakage prevention function.

The third object of the present invention is to form a circular inner and outer circular protrusions on a release paper adhered to the outside of the gasket member to be pressed into the inner and outer circular grooves formed on one surface of the flange, so as to It is to provide a pipe flange coupling structure having a leakage and leakage prevention function that can prevent the fluid from leaking to the outside, significantly reducing the pipe maintenance cost.

The fourth object of the present invention is to change the shape of the pipe flange or release paper with a simpler configuration, so that the chemical fluid used for a special purpose can not leak out, significantly reducing the maintenance cost of the pipe for delivering the fluid. To provide a pipe flange coupling structure having a leak and leakage prevention function.

The fifth object of the present invention is to provide a pipe flange coupling structure that is simple to manufacture and install and further improves the airtightness between flanges, thereby preventing leakage and leakage that may improve safety accidents due to leakage and leakage of pipes. To provide a pipe flange coupling structure having a function.

In order to achieve the above object, the pipe flange coupling structure having a leakage and leakage prevention function according to the present invention is a plurality of pipes 100 to be mutually coupled; It is formed integrally at each end of the pipe 100 to be interconnected, is formed in a flat plate shape as a whole, and in a circular shape with a predetermined radius based on the pipe central axis 150 formed in the inner space of the pipe 100. It is formed, the cross section is formed in a predetermined distance on the basis of the first inner insertion groove 170 and the pipe central axis 150, the cross section is a constant distance to the outside of the first internal insertion groove 170 And a plurality of bolt holes 120 for penetrating the bolt 130 through the inside thereof, and formed at an outer side of the bolt hole 120, and having a predetermined radius based on the pipe central axis 150. A first flange 110 formed in a circular shape and having a first outer insertion groove 160 having a square channel shape in cross section; A second flange (110 ') having the same elements as the first flange (110) and configured in the same shape and coupled to face the first flange (110); It is characterized in that it is inserted between the first flange 110 and the second flange (110 '), characterized in that it comprises a gasket 200 for implementing airtightness and watertightness.

The pipe flange coupling structure having the leakage and leakage prevention function according to the present invention has the following industrial effects.

In the flange structure for interconnecting industrial small diameter or large diameter pipes in which a high temperature or high pressure fluid flows therein, the watertightness of the flange can be further improved to significantly reduce the pipe maintenance cost.

In the flange structure that interconnects industrial small diameter or large diameter pipes through which special industrial fluid flows through the inside, there is an advantage of preventing leakage and leakage accidents by effectively preventing leakage and leakage through the flange. .

In addition to providing a simple configuration and low-cost structure, it is easy to install, and has the advantage of achieving excellent watertightness, and has the advantage of significantly increasing the life of the pipe flange coupling structure.

1 is a cross-sectional view showing a pipe coupling structure according to the prior art.
2 is a perspective view of a gasket used for a pipe joint structure according to the prior art.
3 is a partial cross-sectional view of a coupling of a pipe coupling structure having a leak and leakage prevention function according to the present invention.
Figure 4 is a detailed cross-sectional view of the pipe coupling structure having a leak and leakage prevention function according to the present invention.
Figure 5 is a detailed front view of the pipe coupling structure having a leak and leakage prevention function according to the present invention.
Fig. 6 is a horizontal sectional view of a release paper of a gasket in a pipe joint structure having a leak and leak prevention function according to the present invention.

Referring to the accompanying drawings a preferred embodiment of the coupling structure of the pipe flange having a leak and leakage prevention function according to the present invention in detail as follows.

3 is a partial cross-sectional view of a coupling of a pipe coupling structure having a leak and leakage prevention function according to the present invention. Figure 4 is a detailed cross-sectional view of the pipe coupling structure having a leak and leakage prevention function according to the present invention. Figure 5 is a detailed front view of the pipe coupling structure having a leak and leakage prevention function according to the present invention. Fig. 6 is a horizontal sectional view of a release paper of a gasket in a pipe joint structure having a leak and leak prevention function according to the present invention.

As shown in FIG. 3, the pipe flange coupling structure having the leakage and leakage preventing function according to the present invention is used in a ship or an engine room, and the like, and the first pipe 100 through which water, oil, or a predetermined fluid flows. And a disk-shaped first flange 110 integrally formed at one end of the first pipe 100 and having a diameter larger than that of the first pipe 100, and that of the first flange 110. A bolt hole 120 formed through an inner center, a bolt 130 inserted into and coupled to the bolt hole 120, a nut 140 inserted into and coupled to the bolt 130, and the pipe ( A first external insertion groove 160 formed in a rectangular channel band shape circular shape formed at a predetermined width and a predetermined depth outside the bolt hole 120 about the pipe central axis 150 of the 150; The first inside the bolt hole 120 around the pipe central axis 150 of the pipe 15 It is composed of a first inner insertion groove 170 formed in a circular shape in the shape of a square channel band wider than the width of the outer insertion groove 160, and deeper than the depth of the first outer insertion groove 160. Here, the bolt hole 120 is formed in a plurality of predetermined intervals on the surface of the first flange 110, preferably formed of four.

As shown in FIG. 3, the second pipe 100 ′ coupled to the first pipe 100 has the same shape as the first pipe 100. The second flange 110 ′, the second outer insertion groove 160 ′, and the second inner insertion groove 170 ′ may also have the same shape as the first inner insertion groove 160 and the first inner insertion groove 170. Has a configuration. Accordingly, a detailed description of the entire configuration of the second pipe 100 ′ coupled to the first pipe 100 will be omitted to avoid complexity.

Referring to Figure 4, the configuration of the first flange 110 in detail as follows.

The width W1 of the first inner insertion groove 170 is wider than the width W2 of the first outer insertion groove 160 formed in a circular shape on the outer side thereof, and the depth D1 of the first inner insertion groove 170. Is deeper than the depth (D2) of the first outer insertion groove 160 formed in a circular shape on the outside.

The first angled portion S1 is formed at the lower portion of the first inner insertion groove 170 to be horizontal or inclined lower than the inlet side, and the second angled portion is formed at the lower portion of the first external insertion groove 160 at the horizontal or inner portion. Is formed to be inclined lower than the inlet side, the fluid flowing down the bottom wall of the first inner insertion groove 170 and the first outer insertion groove 160 to the bottom to prevent the leakage to the outside.

Figure 5 is a detailed front view of the pipe coupling structure having a leak and leakage prevention function according to the present invention.

As shown in the drawing, a first internal insertion groove 170 is formed in an intaglio form on one side of the first flange 110 about the pipe central axis 150. Four first bolt holes 120 are formed in the outer circumference of the first inner insertion groove 170 at predetermined intervals through the first flange 110. In addition, a first external insertion groove 160 is formed at an outer side of the four first bolt holes 120.

Referring to Figure 6 describes the configuration of the gasket and the release paper of the pipe flange coupling structure having a leakage and leakage prevention function according to the present invention.

As shown in FIG. 6, the gasket 200 of the pipe flange coupling structure having the leakage and leakage preventing function according to the present invention is inserted between the first and second flanges 110 and 110 ′, so that the pipe 100 It serves to seal water or oil that may leak from the inside to the outside.

A center member 210 is formed in a disc shape at the center of the gasket 200, and an adhesive A is formed on both surfaces of the center member 210.

It is formed in a disk shape with the same diameter as the center member 210, the upper side member 220 and the lower side member 221 are attached to both surfaces of the center member 210 using an adhesive (A).

In addition, the release paper 120 has a disc shape having the same diameter as that of the center member 210 on opposite sides bonded to both surfaces of the center member 210, that is, the other side surfaces of the upper and lower side members 220 and 221. Each attached.

The centers of the center member 210, the upper and lower side members 220 and 221, and the upper and lower release papers 230 and 231 have the same diameter as the inner diameters of the first and second pipes 100 and 100 ′. The pipe hole 240 is formed through.

Four bolt holes 120 are formed on the circumferential surfaces of the center member 210, the upper and lower side members 220 and 221, and the upper and lower release papers 230 and 231 at predetermined intervals. The bolt 130 is inserted and coupled through the bolt hole 120.

The configuration of the upper and lower release papers 230 and 231 of the gasket 200 according to the present invention will be described in detail with reference to FIG. 6. In order to make the description clear, the configurations of the upper and lower release papers 230 and 231 are the same, and the configuration of the upper release paper 230 will be described below.

One side of the upper release paper 230 of the gasket 200 according to the present invention, that is, the side that is not attached to the upper side member 220, the pipe hole 240 between the bolt hole 120 and the pipe hole 240 A band-shaped first inner protrusion 250 protruding at a predetermined height and width from the center of the center is formed in a circular shape.

In addition, a first outer protrusion 260 is formed outside the bolt hole 120 in a band shape protruding at a predetermined height and width from the center of the pipe hole 240.

Here, the configuration of the first inner protrusion 250 and the first outer protrusion 260 will be described in more detail with reference to the accompanying drawings.

The width W3 of the first inner protrusion 250 is wider than the width W4 of the first outer protrusion 260, and the height H3 of the first inner protrusion 250 is the first outer protrusion ( 260 is configured to be higher than the height H4.

In addition, the width W3 of the first inner protrusion 250 is smaller than the width W1 of the first inner insertion groove 170, and the height H3 of the first inner protrusion 250 is the first inner portion. The width W4 of the first external protrusion 260 is greater than the depth D1 of the insertion groove 170, and the width W4 of the first external protrusion 260 is smaller than the width W2 of the first external protrusion 260. The height H4 is greater than the depth D2 of the first external insertion groove.

With reference to the accompanying drawings, the action of the pipe flange coupling structure having a leakage and leakage prevention function according to the present invention having the above configuration will be described in detail as follows.

The gasket 200 is made by using the upper and lower release papers 230 and 231 having the above characteristics.

Next, the first and second flanges 110 and 110 ', which are integrally formed at the ends of the first and second pipes 100 and 100', which are to be coupled to each other, are faced to each other. In the above state, the first internal protrusion 250 of the upper release paper 230 attached to the outer surface of the gasket 200 is inserted into the first internal insertion groove 170 formed in the first flange 110, and the first The external protrusion 260 is inserted into the first external insertion groove 160. In this case, the width W3 of the first inner protrusion 250 and the width W4 of the first outer protrusion 260 may correspond to the width W1 of the first inner insertion groove 170 and the first outer insertion groove 160. Since they are smaller than the width W2, they are easily inserted.

In this state, the lower release paper 231 formed in the same shape as the upper release paper 230, the second internal insertion groove (not shown) and the second external insertion groove (not shown) respectively formed in the second flange 110 ′. Each).

The bolt 130 may have a first flange 110, an upper release paper 230, an upper side member 220, a center member 210, a lower side member 221, a lower release paper 231, and a second flange 110 ′. A plurality of) is formed through each of the plurality of holes 120 to coincide with each other, after which the nut 140 is coupled to the end of the bolt 130 to be coupled.

As the nut 140 is further tightened, the first inner protrusion 250 and the first outer protrusion having a length longer than the depth of the first inner insertion groove 170 and the first outer insertion groove 160, that is, the height is higher. The 260 is inserted and compressed while being crushed a little according to the compression of the tightening, and thus the first inner protrusion 250 and the first outer portion coupled between the first inner insertion groove 170 and the first outer insertion groove 160. Protrusions 260 are mutually press-bonded with more excellent airtightness.

In the operation of the configuration as described above, when the high-pressure or high-temperature fluid flowing inside the pipe 100 to prevent the outflow to the outside will be described.

After installing the pipe flange coupling structure having the leakage and leakage prevention function according to the present invention, the first flange 110 and the second by the action of the high temperature and high pressure fluid flowing through the pipe over time, The gasket 200 compressed between the flanges 110 ′ may be corroded or aged. Accordingly, the high temperature and high pressure fluid flowing inside the pipe starts to flow out through the gap between the first internal insertion groove 170 and the first external insertion groove 160 and the flange 110. The high temperature or high pressure fluid is discharged from the first angled portion S1 formed in the lower portion of the first internal insertion groove 170 formed as the rectangular channel to prevent the fluid from leaking to the outside. The first angled portion formed in the lower portion of the outer insertion groove 160 is stayed in that portion by the second angled portion (S2) to prevent the outflow. The first angular portion S1 and the second angular portion S2 are inclined downwardly in an inner direction, that is, an inner direction of the groove, so that a predetermined fluid flowing into each groove flows outward. It is configured not to come out.

As described above, the pipe flange coupling structure having the leakage and leakage prevention function according to the present invention has an excellent advantage in the following industrial uses.

Internal and external circular grooves are formed on one side of a flange integrally formed at one end of a pipe which is generally used for fluid movement inside a ship or a large ship engine room. By preventing the fluid from leaking out, there is an advantage that can significantly reduce the user's cost loss by significantly reducing the pipe maintenance cost.

In the present invention, by changing the shape of the pipe flange or the release paper with a simpler configuration, it is possible to prevent the chemical fluid used for a special purpose from leaking out, so that the maintenance cost of the pipe for delivering the fluid can be greatly reduced. There is an advantage that can be used for.

Accordingly, the airtightness and watertightness of the pipe flanges can be increased to prevent safety accidents due to leakage and leakage of the pipes.

100: pipe
110, 110 '"first and second flanges
170: first internal insertion groove
160: first external insertion groove
250: first internal protrusion
260: first outer protrusion

Claims

A plurality of pipes 100 to be coupled to each other;
It is formed integrally at each end of the pipe 100 to be interconnected, is formed in a flat plate shape as a whole, and in a circular shape with a predetermined radius based on the pipe central axis 150 formed in the inner space of the pipe 100. It is formed, the cross section is formed in a predetermined distance on the basis of the first inner insertion groove 170 and the pipe central axis 150, the cross section is a constant distance to the outside of the first internal insertion groove 170 And a plurality of bolt holes 120 for penetrating the bolt 130 through the inside thereof, and formed on the outer side of the bolt hole 120, and having a predetermined radius based on the pipe central axis 150. A first flange 110 formed in a circular shape and having a first outer insertion groove 160 having a square channel shape in cross section;
A second flange (110 ′) having the same elements as the first flange (110) and configured in the same shape and coupled to face the first flange (110);
Inserted and installed between the first flange 110 and the second flange (110 '), the pipe flange coupling having a leakage and leakage prevention function, characterized in that it comprises a gasket 200 for realizing airtightness and watertightness rescue.

According to claim 1, The gasket 200 is a center member 210 located in the center, the adhesive (A) formed on both sides of the center member 210, and both surfaces of the center member 210 The upper side member 220 and the lower side member 221 attached to each other using an adhesive A to the upper surface, and a cross section of the channel having a predetermined radius with respect to the central axis 150 of the pipe 100 on the upper surface thereof. The first inner protrusion 250 and the first inner protrusion 250 which are formed to protrude in a circular band shape as a whole in a channel shape, and are formed on the outer side of the first inner protrusion 250, the cross section of which is centered on the central axis 150. A pipe flange coupling structure having a leakage and leakage preventing function, characterized in that it comprises a first outer projection (260) protruding in a circular ta shape protruding generally in a channel shape.

The width W1 of the first inner insertion groove 170 is greater than the width W2 of the first outer insertion groove 160, and the depth D1 of the first inner insertion groove 170 is increased. Pipe flange coupling structure having a leakage and leakage prevention function, characterized in that deeper than the depth (D2) of the first outer insertion groove (160).

According to claim 2, wherein the inner side of the left and right side of the inner insertion groove 170 is lower, the inlet side is higher inclined toward the inside is formed, the fluid flowing into the interior of the inner insertion groove 170 from the pipe The pipe flange coupling structure having a leakage and leakage preventing function, characterized in that the inside is prevented from leaking to the outside.

3. The height H3 of the first inner protrusion 250 protruding from the upper surface of the upper release paper 230 is greater than the depth D1 of the first inner insertion part 170. The width W3 of the inner protrusion 250 is smaller than the width W1 of the first inner insertion part 170, and the outer edge of the first inner protrusion 250 protruding from one upper surface of the upper release paper 230. The height H4 of the first external protrusion 260 formed in the is greater than the depth D2 of the first external insertion unit 160, and the width W4 of the first external protrusion 250 is the first external insertion unit. A pipe flange coupling structure having a leakage and leakage preventing function, characterized in that it is smaller than the width (W2) of (160).