Pipe stub and method for replacing pipe stub

Abstract

To provide a pipe stub that can easily be replaced even when it is not possible to secure a space for carrying in a large heavy machine or a sufficient space above a pipe.SOLUTION: A pipe stub supports a pipe. The pipe stub has a support part that is formed concavely along an outer shape of the pipe and supports the pipe, and the support part is composed of a plurality of members divided along an axial direction and height direction of the pipe. According to the present invention, the pipe stub has a support part that is formed concavely along the outer shape of the pipe and supports the pipe. Also, the support part is composed of a plurality of members divided along the axial direction of the pipe. This makes it possible to provide the pipe stub to the pipe from a right-left direction when viewed from the axial direction of the pipe. Therefore, it is possible to easily replace the pipe stub even when it is not possible to secure a space for carrying in a large heavy machine or a sufficient space around the pipe.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a pipe support and a method for replacing the pipe support.

Background Art

[0002] In large-scale manufacturing facilities such as steel mills and petrochemical plants, each manufacturing facility is connected by pipes. The transfer of raw materials and products, and utilities such as fuel gas and water are supplied to each manufacturing facility through the pipes.

[0003] Some of the pipes connected to the manufacturing facilities have a diameter of 1000 mmφ or more. In addition, in steel mills and petrochemical plants, there are also corrosion environment areas where metals and the like are prone to corrosion. In the corrosion environment area, not only the pipes are regularly updated, but also the pipe supports that support the pipes are regularly updated.

[0004] As such a replacement of the pipe support, for example, in Patent Document 1, after pulling up the existing pipe upward, a new pipe support is inserted under the pipe, and the pulled-up pipe is returned to its original position.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the method for replacing the pipe support described in Patent Document 1, for example, in order to pull up a large-diameter pipe of 1000 mmφ or more upward, it is necessary to use a large crane. Further, in order to pull up the pipe upward, sufficient space must be secured around including above the pipe.

[0007] However, depending on the location where the pipes and pipe supports are installed, there may be a risk that sufficient space for bringing in large construction machinery or sufficient space around the pipes cannot be secured. In such cases, there is a problem that the replacement work of the pipe support becomes very complicated.

[0008] The present invention has been made in view of the above problems, and an object thereof is to provide a pipe support or the like that enables easy replacement of the pipe support even when sufficient space for bringing in large construction machinery or sufficient space above the pipes cannot be secured.

Means for Solving the Problems

[0009] To solve the above problems, the present invention has the following features.

[0010] [1] A pipe support for supporting a pipe, which is formed in a concave shape along the outer shape of the pipe and has a support portion for supporting the pipe, wherein the support portion is composed of a plurality of members divided along the axial direction and the height direction of the pipe. [2] The pipe support according to [1], further comprising an adjustment portion connected to the support portion and for adjusting the support position of the support portion. [3] The pipe support according to [2], wherein the adjustment portion is detachably provided with respect to the support portion. [4] A method for replacing a pipe support, which replaces a pipe support according to any one of [1] to [3] with another pipe support for supporting a pipe, comprising a temporary support step of temporarily supporting the pipe with a temporary support member, a removal step of removing the one pipe support from the pipe, a support portion forming step of assembling the plurality of members to form the support portion. The method for replacing a pipe support includes the above steps. [5] The method for replacing a pipe support further includes an adjustment portion installation step of installing the adjustment portion according to [2] or [3]. The support part forming step is a method for replacing a pipe base described in [4], which is performed after the adjustment part installation step. [6] It has an adjustment part installation step of installing the adjustment part described in [2] or [3], The adjustment part installation step is a method for replacing a pipe base described in [4], which is performed after the support part forming step.

Advantages of the Invention

[0011] According to the pipe base of the present invention, the pipe base is formed in a concave shape along the outer shape of the pipe and has a support part for supporting the pipe. Further, the support part is composed of a plurality of members divided along the axial direction and the height direction of the pipe. Thereby, it becomes possible to provide the pipe base to the pipe from the left - right direction when viewed from the axial direction of the pipe. Therefore, even when it is not possible to secure a space for carrying in a large heavy machine or sufficient space around the pipe, it becomes possible to easily replace the pipe base.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Modes for Carrying Out the Invention

[0013] (First Embodiment) Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a pipe base 100 that supports a pipe 10.

[0014] The pipe 10 is not particularly limited and may be either a buried pipe or an erected pipe. For the pipe 10, for example, a pipe formed in a cylindrical shape can be used. In the present embodiment, an example in which the pipe 10 is formed in a cylindrical shape will be described.

[0015] The pipe support 100 has a support portion 20 for supporting the pipe 10. The support portion 20 is formed in a concave shape along the outer shape of the pipe 10. In the present embodiment, the support portion 20 is formed so as to have an arc shape when viewed from the front. That is, the support portion 20 is formed in an arc shape corresponding to the curvature of the pipe 10.

[0016] The support portion 20 is composed of two members, a first support portion 21 arranged on the right side when viewed from the front and a second support portion 22 arranged on the left side when viewed from the front. The first support portion 21 and the second support portion 22 are fastened to each other by a fastening portion 23.

[0017] The support portion 20 may be manufactured according to the diameter of the pipe 10 for each renovation work. Alternatively, the support portion 20 corresponding to the diameter of the pipe 10 may be manufactured in advance, and the support portion 20 with an appropriate diameter of the pipe 10 may be selected and used when the work is carried out.

[0018] The pipe support 100 preferably has an adjustment portion 30 for adjusting the support height, which is the support position of the support portion 20. The adjustment portion 30 is preferably detachably provided with respect to the support portion 20. The adjustment portion 30 is connected to the support portion 20 by fastening portions 24 and 25. As the adjustment portion 30, although not particularly limited, for example, an H-beam can be used.

[0019] The fastening portions 24 and 25 are composed of, for example, bolts and nuts. By connecting the two in such a manner, it becomes possible to connect the two even in a place where the use of fire is restricted.

[0020] The adjustment unit 30 is provided on the pipe support 40. The adjustment unit 30 is fastened, for example, by the pipe support 40, bolts, and nuts (not shown). Note that the pipe support 40 does not necessarily have to be provided. When the pipe support 40 is not provided, the adjustment unit 30 may be provided between the support unit 20 and the work floor (not shown).

[0021] In this way, by providing the adjustment unit 30, it becomes possible to individually replace each of the support unit 20 and the adjustment unit 30. Further, by replacing it with an adjustment unit 30 having an appropriate height, it becomes possible to provide the support unit 20 at a support position having an appropriate height, so that the versatility can be enhanced.

[0022] That is, when the space between the pipe support 40 and the pipe 10 is narrow, if the height of the pipe stand 100 is too high, there is a possibility that the pipe stand 100 cannot be installed. Therefore, the pipe stand 100 should have the minimum height required for the strength of the support unit 20, and an adjustment unit 30 should be provided between the pipe stand 100 and the pipe support 40 to adjust the height of the pipe stand 100 according to the installation location.

[0023] FIG. 2 shows the configuration of the pipe stand 100. As shown in FIG. 2, the first support portion 21 and the second support portion 22 of the support unit 20 are members divided into two along the axial direction AX of the pipe 10 and along the height direction D1.

[0024] The first support portion 21 has a first placement portion 21a on which the pipe 10 is placed, a first connection portion 21b connected to the adjustment unit 30, and a plurality of first ribs 21c formed from the first placement portion 21a to the first connection portion 21b.

[0025] The second support portion 22 has a second placement portion 22a on which the pipe 10 is placed, a second connection portion 22b connected to the adjustment unit 30, and a plurality of second ribs 22c formed from the second placement portion 22a to the second connection portion 22b.

[0026] The first rib 21c provided on the proximal side of the second support portion 22 is provided in contact with the second rib 22c provided on the proximal side of the first support portion 21. The first rib 21c and the second rib 22c that are in contact with each other are provided with bolt holes (not shown) that can be fastened by the fastening portion 23, and are fastened by the fastening portion 23.

[0027] Here, forces are applied to the first support portion 21 and the second support portion 22 in a direction away from each other due to the influence of vibrations, thermal expansion, etc. of the pipe 10. In FIG. 2, the direction in which they move away from each other corresponds to the left - right direction D2 as viewed from the axial direction AX of the pipe 10. By fastening the first rib 21c and the second rib 22c with the fastening portion 23, the resistance of the support portion 20 against the left - right direction D2 can be increased. As a result, even when a force is applied in the left - right direction D2, the support portion 20 can support the pipe 10 at an appropriate position.

[0028] The first connection portion 21b and the second connection portion 22b are not particularly limited, but in the present embodiment, they are formed in a flat plate shape. The first connection portion 21b and the second connection portion 22b are provided with bolt holes (not shown) that can be fastened by the fastening portion 23, and are fastened to the adjustment portion 30 by the fastening portions 24 and 25. In the present embodiment, the first support portion 21 and the second support portion 22 are assembled in contact with each other in the left - right direction D2 as viewed from the axial direction AX of the pipe 10.

[0029] A method for replacing a pipe support from one pipe support using the pipe support 100 described above with another pipe support will be described. FIG. 3 is a flowchart showing the method for replacing the pipe support. As shown in FIG. 3, first, a temporary support step of temporarily supporting the pipe 10 with a temporary support member (not shown) is performed (step S101). The temporary support member only needs to be able to support the pipe 10 and is not particularly limited.

[0030] Next, a removal process of removing a pipe base 100 from the pipe 10 is performed (step S102). In the removal process of step S102, for example, an existing pipe base, which is one pipe base, may be divided into a plurality by cutting or the like and then removed. When cutting the existing pipe base, for example, it can be performed by a cutting method such as gas cutting. The cutting of the existing pipe base is performed by a method suitable for the installation location. For example, when a flammable material or the like flows through the pipe 10, fire prevention measures are taken.

[0031] Next, a support part forming process of assembling a plurality of members to form the support part 20 is performed (step S103).

[0032] The pipe base 100 is provided, for example, at the location where the existing pipe base was installed. In the support part forming process of step S103, the first support part 21 and the second support part 22 that constitute the support part 20 with a curvature corresponding to the diameter of the pipe 10 are selected. Next, they are moved from the left - right direction D2 as viewed from the axial direction AX of the pipe 10 until the first support part 21 and the second support part 22 come into contact with each other. Next, the first support part 21 and the second support part 22 are fastened with the fastening part 23 to form the support part 20.

[0033] Next, an adjustment part installation process of installing the adjustment part 30 is performed (step S104). Depending on the location where the pipe 10 is installed, there may be a gap between the pipe base 100 and the pipe support 40. In that case, it is advisable to provide the adjustment part 30 between the pipe base 100 and the pipe support 40.

[0034] The adjustment part 30 is fastened to the support part 20 with the fastening parts 24 and 25. The adjustment part 30 is fastened to the pipe support 40 with bolts and nuts.

[0035] Also, since the adjustment part installation process of step S104 is performed after the support part forming process of step S103, it is possible to facilitate the positioning of installing the support part 20.

[0036] As described above, according to the pipe base 100 of the present embodiment, the pipe base 100 is formed in a concave shape along the outer shape of the pipe 10 and has a support portion 20 that supports the pipe 10. Further, the support portion 20 is composed of a first support portion 21 and a second support portion 22 that are divided along the axial direction AX of the pipe 10 and along the height direction D1. Thereby, it becomes possible to provide the pipe base to the pipe from the left - right direction D2 as viewed from the axial direction AX of the pipe 10. In other words, it becomes possible to load and install the pipe base 100 configured by dividing the support portion 20 from the side of the pipe 10.

[0037] Therefore, even when it is not possible to secure a space for bringing in large construction machinery or sufficient space around the pipe, it is possible to easily replace the pipe base. As a result, it is possible to shorten the time required for the replacement work of the pipe base 100.

[0038] Further, conventionally, the pipe 10 lifted upward is moved downward and supported by a newly installed pipe base. In the pipe base 100 of the present invention, since the pipe base can be replaced without performing such an operation, for example, the occurrence of an event to be avoided such as an object being caught between the pipe base and the pipe can be suppressed.

[0039] In the above - described embodiment, the shape in which the first support portion 21 and the second support portion 22 are divided so as to be symmetric with respect to the axis AX has been described. However, the first support portion 21 and the second support portion 22 are not limited to the shape divided at such a position, and for example, they may be in a shape divided at an arbitrary position on the arc. The division position of the first support portion 21 and the second support portion 22 is preferably a position with less resistance when moving the pipe 10. For example, in FIG. 2, the two may be divided at a point P1 corresponding to the rising of the arc.

[0040] In the above-described embodiment, an example in which the support portion 20 is divided into two along the axial direction AX of the pipe 10 has been described. The form of the support portion 20 is not limited to such a mode. For example, the support portion 20 may be divided into three along the axial direction AX of the pipe 10, or may be divided into four.

[0041] Also, an example in which the first support portion 21 and the second support portion 22 are fastened using the fastening portion 23 has been described. The fixing mode of the first support portion 21 and the second support portion 22 is not particularly limited. For example, welding may be used. Also, the fixing mode of the first support portion 21 and the second support portion 22 and the adjusting portion 30 is not particularly limited. For example, welding may be used.

[0042] Furthermore, the adjusting portion 30 is a member that can be used arbitrarily, and the pipe stand 100 may be configured only by the support portion 20.

[0043] Furthermore, in the above-described embodiment, in the temporary support step of step S101, an example in which the step is performed using a temporary support member has been described. The temporary support member may be configured by the pipe stand 100. In this case, after the support portion forming step of step S103 and the adjusting portion installation step of step S104 are performed, the removal step of step S102 may be performed.

[0044] (Second Embodiment) In the above-described embodiment, in the pipe stand replacement method, an example in which the adjusting portion installation step of step S104 is performed after the support portion step of step S103 is performed has been described. Either of the two steps may be performed first.

[0045] FIG. 4 is a flowchart showing a pipe stand replacement method according to the second embodiment. As shown in FIG. 4, first, a temporary support step of temporarily supporting the pipe 10 with a temporary support member (not shown) is performed (step S201).

[0046] Next, a removal process of removing one pipe stand 100 from the pipe 10 is performed (step S202). The removal process in step S202 can be performed in the same manner as the removal process in step S102.

[0047] Next, an adjustment part installation process of installing the adjustment part 30 is performed (step S203). The adjustment part installation process in step S203 can be performed in the same manner as the adjustment part installation process in step S104.

[0048] Next, a support part formation process of assembling a plurality of members to form the support part 20 is performed (step S204). The support part formation process in step S204 can be performed in the same manner as the support part formation process in step S103.

[0049] According to the pipe stand replacement method of the present embodiment, similar to the first embodiment, even when it is not possible to secure a space for bringing in a large heavy machine or sufficient space around the pipe, the pipe stand can be easily replaced. As a result, it is possible to shorten the time required for the replacement work of the pipe stand 100.

[0050] In addition, since the support part formation process in step S204 is performed after the adjustment part installation process in step S203 is performed, the support part formation process can be performed on the adjustment part 30. That is, it is possible to form the support part 20 in a stable situation.

Explanation of Reference Numerals

[0051] 100 Pipe stand 10 Pipe 20 Support part 21 First support part 22 Second support part 30 Adjustment part

Claims

1. A pipe support stand, comprising: a support portion that is formed in a concave shape along the outer shape of the pipe and supports the pipe; the support portion is composed of a plurality of members that are divided along the axial direction and the height direction of the pipe.

2. The pipe support stand according to claim 1, further comprising an adjustment portion that is connected to the support portion and adjusts the support position of the support portion.

3. The pipe support stand according to claim 2, wherein the adjustment portion is detachably provided with respect to the support portion.

4. A method for replacing a pipe support stand, which is replaced from one pipe support stand that supports a pipe to another pipe support stand according to any one of claims 1 to 3, comprising: a temporary support step of temporarily supporting the pipe with a temporary support member; a removal step of removing the one pipe support stand from the pipe; a support portion forming step of assembling the plurality of members to form the support portion. The method for replacing a pipe support stand includes the above steps.

5. The method for replacing a pipe support stand according to claim 4, further comprising an adjustment portion installation step of installing the adjustment portion according to claim 2 or 3; the support portion forming step is performed after the adjustment portion installation step.

6. The method for replacing a pipe support stand according to claim 4, further comprising an adjustment portion installation step of installing the adjustment portion according to claim 2 or 3; the adjustment portion installation step is performed after the support portion forming step.

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