KR100816715B1 - Expansion/contraction joint apparatus for insulated double pipe landfill type - Google Patents

Abstract

An expansion/contraction joint apparatus for a landfill type insulated double pipe is provided to easily discharge fluid without breaking the vacuum state by separating a vacuum region from a fluid discharge region. An expansion/contraction joint apparatus for a landfill type insulated double pipe comprises an outer pipe(100) having a packing port(143) and a pair of inner pipes(110) installed in the outer pipe while facing each other. A fixing pipe(120) is provided in the outer pipe to guide the inner pipes and to form a packing cylinder(141) communicated with a first packing space(147). The fixing pipe is formed with a fluid discharge hole(125) provided between the first and second packing spaces. A vertical wall is fixed between the fixing pipe and the outer pipe. A fluid discharge port(160) is formed in the fluid discharge region to discharge fluid out of the outer pipe.

Description

Expansion / contraction joint apparatus for insulated double pipe landfill type}

1 is a cross-sectional view of a conventional joint joint device of a buried insulated double tube,

2A and 2B are cross-sectional views of an embodiment of a stretch joint device of a buried insulated double tube of the present invention;

Figure 3 is a cross-sectional view of another embodiment of the expansion joint device of the buried insulated double tube of the present invention,

Figure 4 is a cross-sectional view of another embodiment of the expansion joint device of the buried insulated double tube of the present invention,

Figure 5a is an excerpt view of another embodiment of the connection member of the expansion joint device of the buried insulated double tube of the present invention,

Figure 5b is an enlarged view of the main portion of the anchor portion of the expansion joint device of the buried insulated double tube of the present invention,

Figure 5c is an exploded perspective view of the main portion of the packing inlet of the expansion joint device of the buried insulated double tube of the present invention,
Figure 6 is a cross-sectional view of another embodiment of the expansion joint device of the buried insulated double tube of the present invention,
Figure 7 is a cross-sectional view of another embodiment of the expansion joint device of the buried insulated double tube of the present invention.

※ Explanation of codes for main parts of drawing

100: exterior, 110: interior, 120: fixing tube, 141: packing cylinder,

145,147: packing space, 146: insert packing member, 150: vertical wall,

160: leakage fluid outlet,

The present invention relates to a flexible joint device for a buried insulated double pipe, and that the packing means is the insert packing member and the packing in the flexible joint device which can separate the vacuum area and the leaked fluid discharge area and can vacuum the entire piping system with one vacuum means. A stretch joint device for a buried insulated double tube installed in a cylinder.

Stretching device of a generally known buried insulated double tube is shown in Figure 1,

Cylindrical exterior 100, the inner tube 110 is installed at a predetermined interval inside the exterior 100, the branch pipe 200 connected to the exterior 100 in the inner tube 110, and Consisting of the expansion and contraction member 150 is connected to one end of the inner tube 110 and the packing cylinder 142 is installed around the predetermined position of the inner tube 110, the interval between the inner tube 110 and the appearance 100 In order to maintain the outer plate 100 inside the first plate 132, the inner tube 110 outside the second plate 134 is formed by fastening with an anchor structure 130, the anchor structure 130 for heat transfer blocking The gasket is fastened as the fastening member 136 in a state where the gasket is interposed, and the exterior 100 has a fluid leakage check opening 160 extending from the inner tube 110 and an inlet for injecting powder packing into the packing cylinder 142 ( The expansion joint of the heat insulation double pipe of patent No. 0493391 which forms 102 and the cap 104 is known.

The disadvantage with such a device is that

First, there is a possibility that outside air is leaked without the vacuum in the exterior part where the packing material inlet is installed in the space between the inner tube and the outer part where the expansion joint is implemented.In particular, when the joint defect occurs, the inlet cap of the outer cylinder is When opened, there is a problem that the thermal vacuum pressure applied to the entire piping line is broken,

Second, the method of connecting the bellows pipe is conventionally fixed at one end of the inner pipe to the outer peripheral surface of the expansion pipe, and the other end is connected to the end of the inner pipe so that the gap between the expansion pipe and the inner pipe connected to the pipe is not enough to collect the leakage fluid It was difficult to secure space and the manufacturing process was complicated.

Third, the leaked fluid confirmation port of the conventional double insulation tube is connected to the cylindrical tube between the inner tube and the exterior, so it is installed to communicate with the space in which the leakage fluid is collected in the inner tube during manufacturing / construction, as well as to extend the circular tube outside the exterior. There were also complicated drawbacks in the manufacturing process that had to be withdrawn.

The expansion joint device of the buried insulated double tube of the present invention is divided into a vacuum zone and a leaked fluid discharge zone so that vacuum does not break even when a leaked fluid is generated. The purpose is to provide.

In addition, the expansion joint device of the buried insulated double tube of the present invention is to provide a flexible joint device of the buried insulated double tube which enables the vacuum of the entire vacuum area at the same time by distinguishing the vacuum area and the leakage fluid discharge area. There is a purpose.

The present invention provides an expansion joint device for a buried insulated double pipe having an insert packing and a packing cylinder in a fixed pipe and an inner pipe connecting part which are contacted when the inner tube and the fixed tube are in contact with the inner tube and the fixed pipe when the buried insulated double pipe is divided into a vacuum area and a fluid discharge area. The purpose is to do that.

The present invention is divided into a vacuum zone and a leaked fluid discharge zone, the expansion joint device of a buried insulation double pipe with an insert packing and a packing cylinder in the expansion joint device of the buried insulated double pipe which enables the vacuum of the entire piping system by one vacuum means The purpose is to provide.

In addition to the above object, the present invention also provides an expansion joint device for a buried insulated double tube which forms an insert packing and a stuffing box having a packing cylinder at both ends of the fixed tube.

The present invention is a buried insulation in which the fluid leakage is blocked as a packing part in the fixed pipe and the inner pipe connecting portion so that the fluid is not leaked into the leakage fluid discharge zone during the expansion operation of the inner tube and the fixed tube of the buried insulated double tube divided into a vacuum region and a leaked fluid discharge zone. Another object of the present invention is to provide a flexible joint device for a buried insulated double tube in which at least one packing cylinder is implemented in a double joint pipe joint device.

Stretch joint device of the present invention buried insulated double tube for achieving the above objects,

The inner tube is located inside the outer side and faces both the left and right sides, and has a larger diameter than the inner tube and is fixed to the inner side to slide the inner tubes to the left and right to block leakage fluid. And a packing space in which the insert packing member is mounted in addition to the packing cylinder communicating with the packing space, and partitions between the outer end of the fixed pipe and the exterior of the fixed pipe and the fixed tube having a leakage fluid leakage fluid drain hole formed therebetween. Is a vacuum area (a), and inside the fixed tube, a vertical wall forming a leakage fluid discharge zone (b) and a leakage fluid discharge port installed in the leak fluid discharge zone (b) to discharge the leakage fluid to the outside of the exterior It is achieved as a stretch joint device of a buried insulated double tube containing.

In order to achieve the above objects, the present invention includes a flexible joint device for a buried insulated double tube, wherein the buried insulated double tube further includes a communication unit for communicating a vacuum state on both sides of the leaked fluid discharge area (b) to communicate a vacuum state. Is achieved as a flexible joint device.

In order to achieve the above objects, the present invention provides a flexible joint apparatus for a buried insulated double tube, which can be achieved as a flexible joint apparatus for a buried insulated double tube further comprising an anchor for supporting the fixed tube from the inside.

In order to achieve the above objects, the present invention provides a flexible joint apparatus for a buried insulated double tube, and a packing space and a stuffing box having a packing cylinder are preferably formed at both ends of the fixed tube.

In order to achieve the above objects, it is preferable that the communication portion of the flexible joint device of the buried insulated double tube of the present invention is connected to a pipe member from the outside of the exterior.

In order to achieve the above objects, it is preferable that the communicating portion of the flexible joint device of the buried insulated double tube of the present invention covers a space between the holes drilled in both vacuum regions (a) with a cover member.

In order to achieve the above objects, it is preferable that the communication portion of the flexible joint device of the buried insulated double tube of the present invention is connected by a pipe-type connecting member passing between both vacuum regions (a) from the inside of the exterior.

In order to achieve the above objects, it is preferable that the connection member of the stretch joint device of the buried insulation double tube of the present invention is formed with a corrugated pipe at both ends.

In order to achieve the above objects, the pipe member of the flexible joint device of the buried insulated double tube according to the present invention may include a first pipe member connected to a hole in both vacuum regions (a), and a second pipe for connecting between the first pipe members. It is preferably made of a member and a nut member.

In order to achieve the above objects, it is preferable to fasten a disc-shaped cap having a bolt fastening hole to a cylindrical inlet in an outer appearance of the packing part of the flexible joint device of the buried insulated double tube of the present invention.

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

Figure 2a of the accompanying drawings is a cross-sectional view of an embodiment of the expansion joint device of the buried insulated double tube of the present invention.

Stretch joint device of the buried insulated double tube of the present invention according to the drawings is largely the exterior 100, the inner tube 110, the fixed tube 120, the anchor portion 130, the packing portion 140, the vertical wall ( 150 and a leakage fluid outlet 160.

First, the exterior 100 is a cylindrical tube which is in contact with the ground when the buried insulation double tube of the present invention is buried in the ground.

The exterior 100 is a cylindrical exterior, such as the exterior 100 of a conventional buried insulated double tube to form a packing inlet 143 of the packing unit 140 to be described later.

The inner tube 110 which is connected to the inside of the exterior 100 is a tube connected to a substantial fluid transport pipe, and is formed of a cylindrical pipe having a diameter smaller than that of the exterior 100, and forms an extension 112 to each of the inner tube 110. The stopper 113 is formed at the end, but the jaw portion 114 is formed at the outside thereof to limit the slip movement distance c.

The inner tube 110 is located on the inner side of the outer appearance 100 and facing each other at a predetermined distance from both left and right sides. A predetermined distance is maintained between the exterior 100 and the inner tube 110 by the vertical wall 150 to be described later.

The fixed tube 120 has a diameter larger than that of the inner tube 110 and is positioned inside the exterior 100, and the inner tube 110 facing each other is slidably inserted at both left and right sides of the fixed tube 120.

Between the fixing tube 120 and the inner tube 110, the fluid leaks from the inside of the inner tube 110 when the slide contact, various packing means are taken to block this.

The present invention consists of a packing cylinder 141 located in the packing space 145 and only the packing space 147 is formed in one way of such a packing means and the insert packing member 146 is mounted therebetween. In particular, the present invention forms a number of leaking fluid drain holes 125 around the fixed tube 120 to discharge the fluid leaking between the packing spaces (145, 147).

Therefore, the fluid that is not blocked between the inner pipe 110 and the fixed pipe 120 is discharged through the leaked fluid drain hole 125 to the leaked fluid discharge area b to be described later.

The present invention is referred to as a packing part 140 including such an insert packing member 146, a packing space 145, 147, a packing cylinder 141 and a packing inlet 143 on the exterior 100 side, The packing cylinder 141 portion of the packing portion 140 is implemented in an extension portion extending the length of the fixed tube 120, but a separate packing space 145, 147 and stuffing box provided with a packing cylinder 141 ( 122) may be performed by welding to both ends or one end of the fixed tube (120).

The packing spaces 145 and 147 in the stuffing box 122 include a low friction guide insert (not shown), and an annular packing (not shown), which are known in addition to the packing material through the insert packing member and the packing cylinder. And the like can be further mounted.

The fixing tube 120 is a cylindrical tube having a diameter larger than that of the inner tube 110 and smaller than the outer tube 100, and the vertical wall between the inner tube 110 and the outer tube 100 through the leakage fluid discharge zone b. 150).

The vertical wall 150 is welded and partitioned between the both ends of the fixed tube 120 and the exterior 100 in the vertical direction to form a vacuum area (a) outside the fixed tube 120, the inner side of the fixed tube 120 A leakage fluid discharge zone b is formed.

The leaked fluid discharge port 160 is formed on the exterior 100 side of the leaked fluid discharge region b to discharge the collected leaked fluid through the leaked fluid discharge port 160 formed long outside the exterior 100.

On the other hand, the expansion joint device of the buried type insulation double pipe shown in Figure 2b of the accompanying drawings in addition to the expansion joint device of the thermal insulation double pipe shown in Figure 2a above the anchor portion 130 between the inner tube 110 and the exterior (100). Corresponds to the case of further configuration.

That is, the anchor unit 130 has a first plate 132 inside the outer tube 100 and a second plate 134 outside the inner tube 110 in order to maintain a gap between the inner tube 110 and the outer tube 100. It is formed to be fastened by the fastening member 136 in the state via the heat transfer blocking gasket (not shown) (see Fig. 1). In the following embodiments include the anchor portion 130, but can be implemented without the anchor portion 130.

In addition, the communication unit 170 shown in FIGS. 2A and 2B of the accompanying drawings communicates the vacuum areas a on both sides with respect to the leaked fluid discharge area b so that the vacuum state is enabled by one vacuum means. . The communication unit 170 is connected to the pipe member 171 from the outside (100).

Figure 3 of the accompanying drawings shows another embodiment of the expansion joint device of the buried insulated double tube of the present invention.

Since the overall configuration of this embodiment is partially overlapped with the above-described embodiment of FIG. 2, some overlapping descriptions will be omitted.

That is, the stretch joint device of the present invention buried heat insulation double tube shown in Figure 3 is provided with an outer tube 100, an inner tube 110, a fixed tube 120, a vertical wall 150, a leakage fluid outlet 160 And a stuffing box 122 having packing spaces 145 and 147 and a packing cylinder 141 are welded to both ends of the fixed pipe 120, and the communicating portion 170 is connected to both vacuum regions a. Covering between the perforated pipe 172 is carried out with a cover member 173.

Figure 4 of the accompanying drawings shows another embodiment of the expansion joint device of the buried insulated double tube of the present invention.

Since the overall configuration of this embodiment is overlapped with the above-described embodiments, some detailed description thereof will be omitted.

That is, the stretch joint device of the present invention buried heat insulation double tube shown in Figure 4 is provided with an outer tube 100, an inner tube 110, a fixed tube 120, a vertical wall 150, a leakage fluid outlet 160 And, the packing space 145, 147, and the packing portion 140 provided with a packing cylinder 141, and the fixing pipe 120 is supported on the exterior 100 by the anchor portion 130, but The communication unit 170 may be connected to the pipe-type connecting member 174 passing through the vacuum region a on both sides of the exterior 100.

The connection member 174 forms a corrugated pipe 174a at both ends, and the position of the corrugated pipe 174a may be performed at the center.

Figure 5a of the accompanying drawings shows an embodiment of the pipe member 171 implemented in the communication portion 170 of the expansion joint device of the buried type insulation double pipe of the present invention.

That is, the pipe member 171 is connected between the first pipe member 171a and the first pipe member 171a which are respectively connected to the holes 172 of both vacuum regions a as shown in FIG. 5A. The second pipe member (171b) and the nut (171c) for connecting.

5B is an enlarged view illustrating a main portion of the anchor portion 130 of the expansion joint device of the buried insulated double tube of the present invention.

That is, the anchor portion 130 shown in this figure is the anchor portion 130 is connected to the vertical plate 132,134 fixed to each of the inner and outer, overlapping and fastened by fastening member 136 together with the gasket It is preferable to.

Figure 5c of the accompanying drawings shows another embodiment of the packing inlet of the expansion joint device of the buried insulated double tube of the present invention.

That is, the packing inlet 143 shown in this figure is a fastening hole formed on the periphery of the inlet 143 as a bolt 144c with a disc-shaped cover 144a having a bolt hole 144b bored on the exterior 100 side. By fastening to 143b, a packing inlet that can be opened and closed when the packing material is injected is formed.
6 and 7 of the accompanying drawings are cross-sectional views of another embodiment of the expansion joint device of the buried insulated double tube of the present invention.
Stretch joint device of the present invention buried insulated double tube according to the drawings are largely the appearance 100, the inner tube 110, the anchor portion 130, the packing portion 140, the vertical wall 150, leakage It is made of a fluid outlet 160, in particular, one end of the fixed tube 120 of the present embodiment is connected to the same diameter as one inner tube 110 and extends with a diameter that is extended to accommodate the other inner tube (110) And extends the stuffing box 122 described above. That is, only one side of the fixing tube 120 is a type having a packing portion 140, and only the communication unit 170 described above is made of a different structure.
Hereinafter, description of the overlapping structure with the above-described embodiment will be omitted.
However, FIG. 6 of the accompanying drawings shows that the communication unit 170 is implemented as the pipe member 171 to the outside of the appearance 100 in this embodiment, and FIG. 7 shows that the communication unit 170 has both side vacuum regions (a). Covering between the holes 172 bored in the cover member 173 is carried out.

The expansion and contraction action of the expansion joint device of the present invention buried insulation double tube made as described above.

When the pipe in the section buried in the ground is weak or low during operation of the long-distance fluid transport piping system is connected to the inner pipe 110 of the present invention the flexible joint device connected to the inside of the stuffing box 122 of the fixed pipe 120 Will be moved to

On the contrary, when the pipe is pushed down due to the ground weakening in an elevated state, the inner pipe 110 connected thereto is pushed into the stuffing box 122 of the fixed pipe 120 to shorten the inner pipe length.

The leakage fluid discharge action of the expansion joint device of the buried insulated double tube of the present invention made as described above will be described.

When the expansion and contraction action of the inner tube 110 is made in the surface in contact with the stuffing box 122, the fluid being transported through the inner tube 110 is leaked through the packing member. The leaked fluid is collected through the leaked fluid discharge area b separated by the vertical wall 150 described above, and is discharged to the pumping means after checking through the leaked fluid discharge port 160.

As described above, in the flexible joint device of the buried insulation double tube of the present invention, the vacuum zone (a) and the leakage fluid discharge zone (b) are divided so that the vacuum is not broken even when the leakage fluid is generated, and the treatment of the leakage fluid and the injection of the packing material are prevented. Provides an expansion joint device for easy buried insulation double pipe.

In addition, the expansion joint device of the buried insulated double tube of the present invention is divided into a vacuum zone (a) and a leakage fluid discharge zone (b), and a buried insulated double pipe which enables the vacuum of the entire vacuum zone (a) by one vacuum means at the same time Provides expansion joint device.

In addition, the present invention the expansion joint device of the buried insulation double pipe with insert packing and packing cylinder in parallel with the fixed tube and the inner tube connecting portion is made in contact with the inner tube and the inner tube of the buried insulated double pipe divided into vacuum and leakage fluid discharge area. To provide.

In addition, the present invention is divided into a vacuum zone and a leakage fluid discharge zone, the expansion of the buried insulation double pipe in which the insert packing and the packing cylinder in the expansion joint device of the buried insulated double pipe which enables the vacuum of the entire piping system by one vacuum means Provide a joint device.

In addition, the present invention provides an expansion joint device for a buried insulated double tube which forms insert packing and a stuffing box having a packing cylinder at both ends of the fixed tube in addition to the above object.

In addition, the present invention is the fluid leakage is blocked as a packing portion in the fixed pipe and the inner pipe connecting portion so that the fluid is not leaked into the leakage fluid discharge zone during the expansion operation of the inner tube and the fixed tube of the buried type insulation double tube divided into the vacuum region and the leakage fluid discharge zone. Provided is a stretch joint device for a buried insulated double tube in which at least one packing cylinder is implemented in a stretch joint device for a buried insulated double pipe.

Claims (12)

In the expansion joint device of the embedded insulation double pipe, An appearance 100 in which a packing inlet 143 is formed; An inner tube (110) positioned facing both left and right sides of the outer surface (100); The packing cylinder 141 is formed in communication with the packing space 147 to block leakage fluid while guiding the inner pipe 110 inside the exterior 100, the packing space in which the insert packing member 146 is mounted ( A fixed pipe 120 forming a leaking fluid leakage hole 125 between the packing spaces 145 and 147; The space between the fixing pipe 120 and the exterior 100 is partitioned and fixed, and the outer side of the divided space forms a vacuum region (a), and the inner side is a vertical wall vertically installed to form a leakage fluid discharge region (b). 150; and The expansion joint device of the buried insulated double tube is installed in the leakage fluid discharge area (b) and comprises a leakage fluid outlet (160) for discharging the leakage fluid to the outside (100). The method of claim 1, An expansion joint device for a buried insulated double tube, characterized in that the leakage fluid drain hole 125 is formed between the packing space (145, 147). The method of claim 1, And a communication unit (170) for communicating a vacuum state by communicating the vacuum areas (a) on both sides with respect to the leakage fluid discharge area (b). The method of claim 1, A stuffing box (122) having a packing space (145) (147) and a packing cylinder (141) is formed at both ends of the fixed tube (120). The method of claim 1, The inner and outer tubes 100, 110 of the buried type insulation double pipe further comprising an anchor 130 which is fastened to the fastening member 136 together with the gasket after connecting the vertical plates 132, 134 fixed to each other overlapping each other Expansion joint device. The method of claim 3, The communication unit 170 is a stretch joint device of the buried type insulation double tube, characterized in that connected to the pipe member 171 from the outside (100). The method of claim 3, The communication unit 170, the expansion joint device of the buried insulated double tube, characterized in that between the cover hole (172) between the holes 172 drilled in the vacuum area (a) on both sides. The method of claim 3, The communication unit 170 is a stretch joint device of a buried insulated double tube, characterized in that connected to the pipe-type connecting member 174 passing through the vacuum region (a) on both sides from the inside (100). The method of claim 8, The connecting member 174 is a stretch joint device of a buried insulation double tube, characterized in that the corrugated pipe (174a) is formed at both ends. In the expansion joint device of the embedded insulation double pipe, The packing cylinder 141 communicating with the packing space 147 is formed in the fixed pipe 120 for guiding the inner pipe 110 to slide, and the packing space 145 in which the insert packing member 146 is mounted is formed. Stretch joint device for buried insulated double tube, characterized in that formed. The method of claim 10, An expansion joint device for a buried insulated double tube, characterized in that the leakage fluid leakage hole 125 is formed between the plurality of packing spaces (145, 147). In the expansion joint device of the embedded insulation double pipe, An appearance 100 in which a packing inlet 143 is formed; An inner tube (110) located inside the outer appearance (100); The packing cylinder 141 is connected to one of the inner tube 110 of the inner tube 110, the other end is in communication with the packing space 147 to block the leakage fluid to the fixed tube 120 for guiding the slide of the other inner tube (110). A stuffing box 122 having a packing space 145 to which the insert packing member 146 is mounted, and a leakage fluid drain hole 125 formed between the packing spaces 145 and 147; A vertical wall 150 which is partitioned between the exterior 100 and the fixed tube 120 at a predetermined distance to form a vacuum area a on the outside and a leakage fluid discharge area b on the inside; And An expansion joint device for a buried insulated double tube including a leaked fluid discharge port 160 is installed to discharge the leaked fluid from the leaked fluid discharge area (b) to the outside (100).

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