Leak repair device

Abstract

To enable a leakage location of a pipe at a high place to be repaired without temporarily providing a work scaffold or the like.SOLUTION: A leakage repair device comprises: a first clamping part 2; a second clamping part 3 arranged opposite the first clamping part 2; a frame 4 that fixes the first clamping part 2, and supports the second clamping part 3 so that it can advance toward the first clamping part 2; and a screw rod 5 that passes through the frame 4, and has one end side connected to the second clamping part 3. With at least one of the first clamping part 2 and the second clamping part 3 facing a leakage location 101 of a pipe 100, the screw rod 5 is rotated to make the second clamping part 3 advance, thereby clamping the pipe 100 between the first clamping part 2 and the second clamping part 3.SELECTED DRAWING: Figure 1

Description

[[Technical Field]]

[0001] The present invention relates to a leak repair device for repairing a leaked portion of a pipe. [[Background Art]]

[0002] Conventionally, for example, when a pipe arranged at a high place in a power plant corrodes to form a pinhole or the like, causing fluid in the pipe to leak, replacement of the pipe, repair or mending of the pipe has been performed by temporarily constructing a working scaffold, a rolling tower or the like.

[0003] There is also known a pipe cover that enables easy checking and recovery of leaked effluent (see, for example, Patent Document 1). This pipe cover is formed of a member with excellent transparency, covers a joint portion with a pair of covers, and accommodates the joint portion in a space formed by joining the pair of covers. [[Prior Art Documents]] [[Patent Documents]]

[0004] [[Patent Document 1]] Japanese Unexamined Patent Application Publication No. 2000-230690 [[Summary of the Invention]] [[Problem to be Solved by the Invention]]

[0005] Conventionally, in order to repair a leaked portion of a pipe at a high place, it is necessary to temporarily construct a working scaffold, a rolling tower or the like, which not only requires time and labor, but also becomes a factor of increased cost. Further, although the pipe cover of Patent Document 1 can check leaked effluent, when the pipe is located at a high place, it is necessary to temporarily construct a working scaffold, a rolling tower or the like for installation, which causes the same problem.

[0006] Accordingly, an object of the present invention is to provide a leak repair device capable of repairing a leaked portion of a pipe at a high place without temporarily constructing a working scaffold or the like. [Means for solving the problem]

[0007] To solve the above problems, the invention of claim 1 includes a first clamping portion, a second clamping portion disposed opposite to the first clamping portion, a frame that fixes the first clamping portion and supports the second clamping portion so that it can move toward the first clamping portion, and a threaded rod that passes through the frame and has one end connected to the second clamping portion. A first cover, which is temporarily fixed to the inner surface of the first clamping portion and has a first connecting portion, and a second cover, which is temporarily fixed to the inner surface of the second clamping portion and has a second connecting portion, The pipe is clamped between the first and second clamping portions by rotating the threaded rod while at least one of the first and second clamping portions is facing the leak point in the pipe, thereby advancing the second clamping portion. death , The second clamping portion is supported by the frame so as to be retractable from the first clamping portion, and with at least one of the first cover and the second cover facing the leak location of the piping, the threaded rod is rotated in one direction to advance the second clamping portion, thereby connecting the first and second coupling portions, so that the first and second covers are connected while clamping the piping, and the threaded rod is rotated in the other direction to retract the second clamping portion, causing the first cover to detach from the first clamping portion and the second cover to detach from the second clamping portion. This is a leak repair device characterized by the following:

[0008] The invention of claim 2 is characterized in that, in the leak repair device described in claim 1, a connecting portion for connecting a rod-shaped body is provided on the other end of the threaded rod.

[0009] The invention of claim 3 relates to the leak repair device described in claim 1 or 2, The first cover and the second cover The inner surface of the device is provided with a sealing material that seals the leakage point. [Effects of the Invention]

[0011] According to the invention described in claim 1, the leak point in the piping can be gripped by the first clamping part and the second clamping part simply by rotating the threaded rod. Therefore, by making the threaded rod long enough to be reachable by hand, it becomes possible to repair leak points in high-altitude piping at low cost, safely and easily without erecting temporary scaffolding or the like. Furthermore, according to the invention described in claim 1, by rotating the threaded rod in one direction and the other, the leak point in the piping can be clamped between the first cover and the second cover, and the first clamping part and the second clamping part can be removed. In other words, it is not necessary to install the first clamping part, the second clamping part, the frame and threaded rod in the piping; only the first cover and the second cover need to be installed in the piping. As a result, the weight and load on the piping can be reduced, and the first clamping part, the second clamping part, the frame and threaded rod can be reused.

[0012] According to the invention described in claim 2, by connecting a rod-shaped body to a threaded rod via a connecting part, even if the threaded rod is short, a person can rotate the rod-shaped body by hand to safely and easily repair leaks in high-altitude piping. In other words, by shortening the threaded rod installed in the piping, the weight and load on the piping can be reduced.

[0013] According to the invention described in claim 3, since a sealing material is provided on the inner surfaces of the first clamping portion and the second clamping portion, it is possible to seal the leak even when the leak cannot be sealed (leaking stopped) by simply clamping the pipe with the first clamping portion and the second clamping portion. Moreover, since the sealing material is provided in advance on the inner surfaces of the first clamping portion and the second clamping portion, there is no need for the worker to install the sealing material, and the leak in the pipe can be repaired properly and easily. [Brief explanation of the drawing]

[0015] [Figure 1] This is a front view showing a leak repair device and operating rod according to Embodiment 1 of the present invention. [Figure 2] Figure 1 shows the leak repair device and operating rod in use. Figure (a) shows the state before the leak repair device grips the pipe, Figure (b) shows the state after the leak repair device grips the pipe, and Figure (c) shows the state after the operating rod has been removed from the leak repair device. [Figure 3] This is a front view showing a leak repair device according to Embodiment 2 of the present invention. [Figure 4] This figure shows the pipe being clamped by the leak repair device shown in Figure 3. [Figure 5] This figure shows the state in which the piping is clamped only by the first cover and the second cover, compared to the state in Figure 4. [Modes for carrying out the invention]

[0016] The present invention will be described below based on the illustrated embodiments.

[0017] (Embodiment 1) Fig. 1 is a front view showing a leak repairing apparatus 1 and an operating rod (rod-shaped body) 6 according to this embodiment. This leak repairing apparatus 1 is an apparatus for repairing a leak location 101 of a pipe 100. In this embodiment, the case where liquid leakage or leakage occurs in the pipe 100 that is disposed at a high place of a power plant and allows liquid to flow therethrough will be described, but it is needless to say that the present invention can also be applied to pipes or ducts through which gas flows.

[0018] The leak repairing apparatus 1 mainly includes a first clamping portion 2, a second clamping portion 3, a frame 4, and a threaded rod 5. These components are made of materials having predetermined strength, rigidity, weather resistance and the like, for example, aluminum alloy, steel, hard plastic and the like.

[0019] The first clamping portion 2 is a member that clamps the pipe 100 in a manner described later. In this embodiment, it is formed in a semi-circular arc shape, and its inner diameter is formed to be substantially the same as the outer diameter of the pipe 100. The width of the first clamping portion 2, that is, the axial length of the arc, is set to sufficiently cover the periphery of a commonly occurring leak location 101.

[0020] Further, a sealing material 21 for sealing the leak location 101 is provided (affixed) on the inner surface (surface on the inner diameter side) of the first clamping portion 2. The sealing material 21 may be any material as long as it can stop leakage from the leak location 101, and for example, a rubber sheet with high sealing performance and waterproof performance can be mentioned.

[0021] The second clamping portion 3 is a member disposed opposite to the first clamping portion 2, and clamps the pipe 100 in a manner described later. That is, it has a semi-circular arc shape, the inner diameter thereof is formed to be substantially the same as the outer diameter of the pipe 100, and is disposed such that the inner surface (surface on the inner diameter side) faces the inner surface of the first clamping portion 2. The width of the second clamping portion 3, that is, the axial length of the arc, is set to sufficiently cover the periphery of a commonly occurring leak location 101. Furthermore, one end portion (one end portion of the arc) of the second clamping portion 3 is provided with a guided portion 32 that is fitted and engaged with a guide portion 43 of the frame 4 described later.

[0022] Furthermore, the inner surface of the second clamping portion 3 is provided with a sealing material 31 similar to the sealing material 21, which seals the leak point 101. Thus, in this embodiment, sealing materials 21 and 31 are provided in advance on the inner surfaces of both the first clamping portion 2 and the second clamping portion 3. In contrast, if the location of the leak point 101 of the piping 100 is known in advance, the sealing material 21 and 31 may be provided only on the inner surface of one of the first clamping portion 2 or the second clamping portion 3 facing the leak point 101.

[0023] Frame 4 is a support member that fixes the first clamping portion 2 and supports the second clamping portion 3 so that it can move back and forth relative to the first clamping portion 2. Specifically, it is roughly J-shaped overall and comprises a straight vertical portion 41 and a horizontal portion 42 that extends from the lower end of the vertical portion 41 substantially perpendicular to the vertical portion 41, with one end edge (one end edge of the arc) of the first clamping portion 2 integrally fixed to the upper end of the vertical portion 41. Thus, in this embodiment, the first clamping portion 2 and frame 4 are integrated, but the first clamping portion 2 and frame 4 may be separate components that are connected and fixed together.

[0024] Furthermore, the vertical section 41 is provided with a guide section (groove-shaped or convex guide rail) 43 that extends in the longitudinal direction of the vertical section 41. The guided portion 32 of the second clamping section 3 is fitted and engaged with this guide section 43, thereby allowing the second clamping section 3 to move toward or away from the first clamping section 2 along the guide section 43.

[0025] Thus, in this embodiment, the second clamping portion 3 is movable forward and backward. However, if the purpose is merely to clamp the pipe 100 and there is no need to retract the second clamping portion 3 to remove the leak repair device 1, the second clamping portion 3 may be made to move forward only. For example, the guided portion 32 and the guide portion 43 may be made into a ratchet mechanism so that the second clamping portion 3 does not retract.

[0026] Furthermore, screw holes (not shown) are formed in the horizontal portion 42 of the frame 4, and the threaded rod 5 is screwed into these screw holes, causing the threaded rod 5 to penetrate the frame 4.

[0027] One end of the threaded rod 5 is connected to the second clamping portion 3. That is, one end of the threaded rod 5 is connected to the second clamping portion 3 so that the threaded rod 5 can rotate around its axis. Here, if it is not necessary to retract the second clamping portion 3 as described above, one end of the threaded rod 5 may be connected to the second clamping portion 3 by contacting or abutting it, so that the threaded rod 5 can push the second clamping portion 3 toward the first clamping portion 2.

[0028] Furthermore, a connecting portion 51 is provided at the other end of the threaded rod 5 for connecting and linking the long operating rod 6. This connecting portion 51 is cylindrical, and a pair of T-shaped notches 52 are formed on its side facing each other.

[0029] On the other hand, a locking bar 61 is attached to the tip of the operating rod 6, perpendicular to the operating rod 6, passing through the operating rod 6. By inserting the locking bar 61 into the notch 52 and rotating the operating rod 6 to either the left or right, the locking bar 61 and the notch 52 engage, connecting the threaded rod 5 and the operating rod 6. Furthermore, a rod-shaped handle 62 for rotating the operating rod 6 is attached to the other end (hand side) of the operating rod 6, passing perpendicularly through the operating rod 6. The operating rod 6 may be made extendable or retractable, and the handle 62 may be made detachable.

[0030] Next, we will explain how to use the leak repair device 1 with this configuration.

[0031] First, as described above, the operating rod 6 is connected to the threaded rod 5, and as shown in Figure 2(a), with the first clamping portion 2 and the second clamping portion 3 separated, at least one of the first clamping portion 2 and the second clamping portion 3 is positioned facing the leak point 101 of the pipe 100. In this figure, the second clamping portion 3 is positioned facing the leak point 101, but if there are multiple leak points 101, both the first clamping portion 2 and the second clamping portion 3 may be positioned facing the leak points 101. In this case, the first clamping portion 2 is positioned on the upper side, and the second clamping portion 3 and the threaded rod 5 are positioned on the lower side (towards the ground).

[0032] Next, in this state, as shown in Figure 2(b), by rotating the operating rod 6 in one direction (for example, clockwise), the threaded rod 5 is also rotated in one direction and advanced, causing the second clamping part 3 to move forward toward the first clamping part 2. Then, by continuing to rotate the operating rod 6, the pipe 100 is clamped between the first clamping part 2 and the second clamping part 3.

[0033] Next, as shown in Figure 2(c), the operating rod 6 is rotated slightly in the other direction (for example, counterclockwise) to remove the locking bar 61 from the notch 52, thereby detaching the operating rod 6 from the threaded rod 5 (releasing the connection). As a result, the leak repair device 1 is attached to the piping 100 with the first clamping part 2 and the second clamping part 3 clamping around the leak point 101, and the leak from the leak point 101 is repaired.

[0034] As described above, with this leak repair device 1, the leak point 101 of the pipe 100 can be gripped by the first clamping part 2 and the second clamping part 3 simply by rotating the threaded rod 5. Therefore, by making the threaded rod 5 long enough to be reached by hand, it becomes possible to safely and easily repair the leak point 101 of the pipe 100 at a high place without having to erect scaffolding or other temporary work platforms.

[0035] Furthermore, by connecting the operating rod 6 to the threaded rod 5 via the connecting part 51, even if the threaded rod 5 is short, a person can rotate the operating rod 6 by hand to safely and easily repair the leak point 101 in the high-altitude piping 100. In other words, by shortening the threaded rod 5 installed in the piping 100, it is possible to reduce the weight and load on the piping 100.

[0036] Furthermore, since sealing materials 21 and 31 are provided on the inner surfaces of the first clamping portion 2 and the second clamping portion 3, even if the leak point 101 cannot be sealed (leakage stopped) by simply clamping the pipe 100 with the first clamping portion 2 and the second clamping portion 3, it becomes possible to seal the leak point 101. Moreover, since the sealing materials 21 and 31 are pre-provided on the inner surfaces of the first clamping portion 2 and the second clamping portion 3, there is no need for workers to go to the trouble of placing the sealing materials 21 and 31, making it possible to repair the leak point 101 of the pipe 100 properly and easily.

[0037] (Embodiment 2) Figure 3 is a front view showing the leak repair device 10 according to this embodiment. This embodiment differs from Embodiment 1 in that it includes a first cover 7 and a second cover 8. Components equivalent to those in Embodiment 1 are denoted by the same reference numerals and their descriptions are omitted. In this embodiment, sealing materials 21 and 31 are not provided on the inner surfaces of the first clamping portion 2 and the second clamping portion 3.

[0038] The first cover 7 and the second cover 8 are made of a lightweight material having predetermined strength, elasticity, weather resistance, etc., such as hard plastic, and are semi-circular in shape, with an inner diameter approximately the same as the outer diameter of the pipe 100 and an outer diameter approximately the same as the inner diameter of the first clamping portion 2 and the second clamping portion 3. In this embodiment, the inner diameters of the first clamping portion 2 and the second clamping portion 3 are formed to be larger than the outer diameter of the pipe 100 (larger by the thickness of the covers 7 and 8).

[0039] Furthermore, flange portions 71 that protrude outward are formed at both ends (both ends of the arc) of the first cover 7, and hook-shaped locking portions (first connecting portions) 72 are formed on these flange portions 71. Similarly, flange portions 81 that protrude outward are formed at both ends of the second cover 8, and hook-shaped locking portions (second connecting portions) 82 are formed on these flange portions 81.

[0040] The first cover 7 is temporarily fixed to the inner surface of the first clamping portion 2, and the second cover 8 is temporarily fixed to the inner surface of the second clamping portion 3. Here, the method of temporary fixing can be any method that allows for removal as described later, for example, tape or adhesive that can be easily removed can be used. In addition, a sealing material may be provided on the inner surfaces of the first cover 7 and the second cover 8.

[0041] Next, we will explain how to use the leak repair device 10 with this configuration.

[0042] First, as shown in Figure 3, with at least one of the first cover 7 and the second cover 8 facing the leak point 101 of the pipe 100, the threaded rod 5 (operating rod 6) is rotated in one direction (for example, clockwise) to advance the second clamping portion 3 toward the first clamping portion 2, similar to Embodiment 1. As a result, as shown in Figure 4, the locking portion 82 locks and connects with the locked portion 72, and the first cover 7 and the second cover 8 are connected in a state where they clamp the pipe 100. Next, the threaded rod 5 is rotated in the other direction (for example, counterclockwise) to retract the second clamping portion 3, causing the first cover 7 to detach from the first clamping portion 2 and the second cover 8 to detach from the second clamping portion 3. Then, by removing the frame 4 from the covers 7 and 8, as shown in Figure 5, only the first cover 7 and the second cover 8 are attached to the pipe 100.

[0043] According to this embodiment, by rotating the threaded rod 5 in one direction and the other, the leak point 101 of the pipe 100 can be clamped between the first cover 7 and the second cover 8, and the first clamping part 2, the second clamping part 3, etc. can be removed. In other words, it is not necessary to install the first clamping part 2, the second clamping part 3, the frame 4, and the threaded rod 5 on the pipe 100, and only the first cover 7 and the second cover 8 need to be installed on the pipe 100. As a result, the weight and load on the pipe 100 can be reduced, and the first clamping part 2, the second clamping part 3, the frame 4, and the threaded rod 5 can be reused.

[0044] Although embodiments of this invention have been described in detail above, the specific configuration is not limited to these embodiments, and any design changes, etc., that do not depart from the gist of this invention are also included. For example, in the above embodiment, both the first clamping portion 2 and the second clamping portion 3 are formed in a semi-circular shape, but one or both may be formed in other shapes (for example, substantially flat) as long as they can clamp the pipe 100 and seal the leak point 101. [Explanation of Symbols]

[0045] 1.10 Leak repair device 2. First clamping portion 21. Sealing material 3. Second clamping section 31. Sealing material 4 frames 5 threaded rods 51 Connecting part 52 Notches 6 Operation rod (rod-shaped body) 61 Locking bar 7. First cover 72 Locking portion (first connecting portion) 8. Second cover 82 Locking part (second connecting part) 100 piping 101 Leak Location

Claims

1. The first clamping portion and A second clamping portion is disposed opposite to the first clamping portion, A frame that fixes the first clamping portion and supports the second clamping portion so that it can move toward the first clamping portion, A threaded rod, which penetrates the frame and has one end connected to the second clamping portion, A first cover having a first connecting portion is temporarily fixed to the inner surface of the first clamping portion, A second cover, which is temporarily fixed to the inner surface of the second clamping portion and has a second connecting portion, The device is equipped with such a mechanism, and with at least one of the first clamping portion and the second clamping portion facing the leak point of the pipe, the threaded rod is rotated to advance the second clamping portion, thereby clamping the pipe between the first clamping portion and the second clamping portion. The second clamping portion is supported by the frame so as to be retractable from the first clamping portion, With at least one of the first cover and the second cover facing the leak in the piping, the threaded rod is rotated in one direction to advance the second clamping portion, thereby connecting the first joint and the second joint, and the first cover and the second cover are connected while clamping the piping. The threaded rod is then rotated in the other direction to retract the second clamping portion, causing the first cover to detach from the first clamping portion and the second cover to detach from the second clamping portion. A leak repair device characterized by the following.

2. A connecting portion for connecting a rod-shaped body is provided on the other end of the aforementioned threaded rod. The leak repair device according to feature 1.

3. A sealing material for sealing the leakage point is provided on the inner surfaces of the first cover and the second cover. A leak repair device according to either item 1 or 2.

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