Water-stopping band device

Abstract

To prevent leakage of steam from a steam pipe.SOLUTION: A water stop band device 10 comprises a rubber patch 11 for covering a pinhole 2 formed in a steam pipe 1, and a band 20 for pressing the rubber patch 11 from the outside. The band 20 is tightened by a tightening tool 30.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a water stop band device for stopping steam leaking from a pinhole formed in a steam pipe.

Background Art

[0002] Conventionally, a repair device has been used to stop a fluid leaking from a pinhole formed in a steam pipe.

[0003] Such a repair device has a structure for stopping water leakage not only from the pinhole but also from the entire pipe, and the water stop portion extends over the entire circumference of the pipe. Therefore, the structure of the entire repair device becomes large-scale.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present disclosure has been made in consideration of such points, and an object thereof is to provide a water stop band device that can prevent steam from flowing out limited to a pinhole formed in a steam pipe and its vicinity, and has a compact structure as a whole.

Means for Solving the Problems

[0005] The present disclosure is a water stop band device for stopping steam leaking from a pinhole formed in a steam pipe, comprising a rubber patch that covers the pinhole from the outside of the steam pipe, a band that presses the rubber patch from the outside and is wound around the steam pipe, and a fastener for tightening the band, wherein a water stop protrusion for forming a water stop region is formed on the inner surface of the rubber patch.

[0006] The present disclosure is a water stop band device, wherein the water stop protrusion is formed in a lattice pattern on the inner surface of the rubber patch, and the water stop region is formed in a rectangular shape by the lattice-shaped water stop protrusion.

[0007] This disclosure relates to a waterproofing band device, wherein guide protrusions are provided on both ends of the band in the width direction on the outer surface of the rubber patch to prevent the band from falling off. [Effects of the Invention]

[0008] As described above, according to this disclosure, water can be stopped only in the pinholes formed in the steam piping and their vicinity, and the overall structure can be made compact. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a cross-sectional view showing a water-stopping band device according to one embodiment of the present disclosure. [Figure 2] Figure 2 is a partially broken side view showing a water-stopping band device according to one embodiment of the present disclosure. [Figure 3] Figure 3 is a plan view showing the rubber patch. [Figure 4] Figure 4 is a cross-sectional view of line IV-IV in Figure 3. [Figure 5] Figure 5 is a cross-sectional view of line VV in Figure 3. [Figure 6A] Figure 6A is a side view showing the fastener. [Figure 6B] Figure 6B shows the other end of the band. [Figure 7A] Figure 7A is a cross-sectional view illustrating the operation of this embodiment. [Figure 7B] Figure 7B is a side view illustrating the operation of this embodiment. [Figure 8A] Figure 8A is a cross-sectional view illustrating the operation of this embodiment. [Figure 8B] Figure 8B is a side view illustrating the operation of this embodiment. [Figure 8C] Figure 8C is an enlarged cross-sectional view illustrating the operation of this embodiment. [Modes for carrying out the invention]

[0010] Hereinafter, an embodiment of the water-stopping band device according to this disclosure will be described with reference to the drawings.

[0011] First, the outline of the sealing band device 10 will be described with reference to FIGS. 1 and 2.

[0012] The sealing band device 10 stops fluids such as steam leaking from the pinhole 2 formed in the steam pipe 1.

[0013] Such a sealing band device 10 includes a rubber patch 11 that covers the pinhole 2 of the steam pipe 1 from the outside of the steam pipe 1, a band 20 that presses the rubber patch 11 from the outside and is wound around the steam pipe 1, and a fastener 30 that tightens the band 20.

[0014] Among these, the rubber patch 11 covers the pinhole 2 from the outside of the steam pipe 1, and is made of a rubber patch containing propylene tetrafluoride as the main material and has a rectangular shape in plan view.

[0015] Specifically, as shown in FIGS. 3 to 5, the rubber patch 11 has a square shape in plan view and has an inner surface 11A and an outer surface 11B. A sealing projection 12 extending linearly is formed on the inner surface 11A of the rubber patch 11, and this sealing projection 12 is formed in a lattice shape. And inside the sealing projection 12 formed in a lattice shape, a concave sealing region 13 descending from the sealing projection 12 is formed (see FIG. 3).

[0016] That is, the fluid leaking from the steam pipe 1 through the pinhole 2 stops within the sealing region 13 surrounded by the sealing projections 12 of the rubber patch 11, and does not leak outward from the rubber patch 11.

[0017] In the present embodiment, the rubber patch 11 has a square shape, and one side has a length of L1.

[0018] In addition, a total of nine sealing regions 13 surrounded by the sealing projections 12 are formed on the inner surface of the rubber patch 11, and these nine sealing regions 13 function to stop the fluid and prevent the fluid from leaking outward.

[0019] In this embodiment, a square water-stop range 13A for stopping fluid is formed by nine water-stop regions 13. A non-water-stop range 13B is formed outward of the square water-stop range 13A constituted by the nine water-stop regions 13 on the inner surface 11A of the rubber patch 11.

[0020] Therefore, when the pinhole 2 comes to a position corresponding to the water-stop range 13A, the rubber patch 11 can surely stop the fluid leaking from the pinhole 2. However, when the pinhole 2 comes to a position corresponding to the non-water-stop range 13B, it becomes difficult to stop the fluid leaking from the pinhole 2 by the rubber patch 11.

[0021] In this embodiment, each of the nine water-stop regions 13 has a square shape, and the water-stop range 13A composed of the nine water-stop regions 13 also has a square shape.

[0022] One side of the water-stop range 13A has a length of L2.

[0023] In this embodiment, one side L1 of the square rubber patch 11 is, for example, 20 mm, and one side L2 of the square water-stop range 13A is, for example, 14 mm.

[0024] Also, on the outer surface 11B of the rubber patch 11, as shown in FIGS. 4 and 5, a pair of linearly extending guide protrusions 17 are provided at both ends in its width direction (which coincides with the width direction of the band). The pair of guide protrusions 17 provided on the outer surface 11B of the rubber patch 11 prevent the band 20 disposed on the outer surface 11B of the rubber patch 11 from falling off the rubber patch 11. In this embodiment, the band 20 has a width of 16 mm, and both ends of the band 20 are pressed by the pair of guide protrusions 17 to prevent the band 20 from falling off.

[0025] Also, as described above, the rubber patch 11 is pressed against the steam pipe 1 from the outside by the band 20. In this embodiment, the band 20 is made of stainless steel, and the band 20 is tightened by the fastener 30.

[0026] In this embodiment, as shown in Figures 1 and 2, the stainless steel band 20 has one end 20a and the other end 20b that are separate from each other. The fastener 30 is fixed to the one end 20a of the band 20 (see Figure 6A).

[0027] The fastener 30 comprises a mounting fixture 32 fixed to one end 20a of the band 20, and a fastener body 31 attached to the mounting fixture 32, with a worm gear 33 rotatably arranged inside the fastener body 31.

[0028] Furthermore, a hexagonal bolt 34 is attached to one end of a worm gear 33 located inside the fastener body 31, and the worm gear 33 inside the fastener body 31 rotates when the hexagonal bolt 34 is rotated using a tool (not shown).

[0029] On the other hand, at the other end 20b of the band 20, multiple elongated openings 21 extending in the width direction of the band 20 are provided in a continuous manner along the longitudinal direction of the band 20 (see Figure 6B).

[0030] The other end 20b of the band 20 is inserted into the fastener body 31, and the other end 20b is brought into contact with the worm gear 33 inside the fastener body 31. Then, the hexagonal bolt 34 attached to the worm gear 33 is rotated using a tool. This causes the worm gear 33 to rotate, and the worm gear 33 engages with the opening 21 of the other end 20b. By rotating the worm gear 33 in this way, the other end 20b of the band 20 can be advanced to the right in Figure 6A (in the direction of the arrow in Figure 6A), and the inner diameter of the band 20 can be reduced.

[0031] As a result, the fastener 30 can press the band 20 against the steam pipe 1.

[0032] Next, the operation of this embodiment, which has the above configuration, will be explained with reference to Figures 7A to 8C.

[0033] First, as shown in Figures 7A and 7B, the location of the fluid leak from the steam piping 1 is identified, and the pinhole 2 is then identified from the location of the fluid leak.

[0034] Next, the area near the pinhole 2 in the steam pipe 1 is covered from the outside with a rubber patch, and the rubber patch 11 is temporarily fixed to the outside of the steam pipe 1.

[0035] Next, as shown in Figures 8A to 8C, the rubber patch 11 is held in place from the outside using the band 20, and the band 20 is wrapped around the outside of the steam pipe 1. At this time, the band 20 is positioned within the guide protrusions 17 at both ends in the width direction (width direction of the band) provided on the outer surface 11B of the rubber patch 11.

[0036] Subsequently, the other end 20b of the band 20 is inserted into the fastener 30 provided on one end 20a of the band 20, and the hexagonal bolt 34 is rotated using a tool.

[0037] At this time, the worm gear 33 of the fastener 30 engages with the opening 21 provided at the other end 20b of the band 20. By rotating the worm gear 33 in this way, the other end 20b of the band 20 is advanced to the right in Figure 6A (in the direction of the arrow in Figure 6A), thereby reducing the inner diameter of the band 20 and tightening the band 20 with the fastener 30.

[0038] During this time, while ensuring that the band 20 does not come off the guide projection 17 provided on the outer surface 11B of the rubber patch 11, the fastener 30 is tightened until no fluid leaks out from the pinhole 2.

[0039] As described above, according to this embodiment, fluid leakage from the steam pipe 1 can be easily and simply prevented by identifying the pinhole 2 formed in the steam pipe 1, covering the pinhole 2 with a rubber patch 11, and securing the rubber patch 11 with a band 20. Furthermore, the inner surface 11A of the rubber patch 11 is provided with linearly extending water-stopping protrusions 12 formed in a grid pattern, and the water-stopping protrusions 12 form nine square-shaped water-stopping areas 13. Therefore, by simply positioning the rubber patch 11 on the outer surface of the steam pipe 1 so that the pinhole 2 corresponds to the water-stopping range 13A consisting of these nine water-stopping areas 13, the pinhole 2 will be covered by one of the water-stopping areas 13. This ensures that the fluid from the pinhole 2 is contained within the narrow range of the water-stopping area 13 and reliably prevented from leaking out of the rubber patch 11.

[0040] Furthermore, even if fluid leaks from the water-sealing area 13 corresponding to the pinhole 2, the fluid leaked from the water-sealing area 13 corresponding to the pinhole 2 is contained within the water-sealing area 13 adjacent to that water-sealing area 13, so the fluid does not leak out of the rubber patch 11.

[0041] Furthermore, since a pair of guide protrusions 17 are provided on the outer surface 11B of the rubber patch 11, when the band 20 is fastened with the fastener 30, the band 20 will not come off the rubber patch 11 or the band 20 will only make contact with the rubber patch 11 on one side, ensuring that the rubber patch 11 is securely held in place by the band 20.

[0042] In the above embodiment, a fastener 30 is fixed to one end 20a of the band 20, the other end 20b of the band 20 is inserted into the fastener 30, and the band 20 is tightened by the fastener 30. However, the method is not limited to this, and the band 20 may be divided into two or more sections, and a fastener may be provided at each section to tighten the band 20 with each fastener.

[0043] In addition, an example was shown in which a grid-like water-sealing projection 12 is provided on the inner surface 11A of the rubber patch 11, and these water-sealing projections 12 form nine water-sealing regions 13, but the number of water-sealing regions 13 is not limited to this. [Explanation of symbols]

[0044] 1. Steam piping 2 pinholes 10. Water-stopping band device 11 Rubber patch 12 Water stop protrusion 13 Water stop area 13A Water-stopping range 13B Non-waterproof range 17 Guide projection 20 bands 20a One end 20b Other end 21 Aperture 30 Fasteners 31 Fastener body 32 Mounting hardware 33 Worm Gear 34 Hex bolts

Claims

1. In a water-stopping band device that prevents steam from leaking through a pinhole formed in a steam pipe, A rubber patch covers the pinhole from the outside of the steam piping, The rubber patch is held in place from the outside, and the band wrapped around the steam piping is also used. The band is further equipped with a fastener for tightening the band, Multiple water-stopping protrusions are formed on the inner surface of the rubber patch, forming a plurality of water-stopping regions. The water-stopping protrusions are formed in a grid pattern on the inner surface of the rubber patch, and each water-stopping area is formed in a rectangular shape by the grid-like water-stopping protrusions. Multiple water-sealing regions form a water-sealing area, and the rubber patch has a non-water-sealing area that is open to the outside and formed on the outer periphery of the water-sealing area. Water-stopping band device.

2. The waterproofing band device according to claim 1, wherein guide protrusions are provided on both ends of the band in the width direction on the outer surface of the rubber patch to prevent the band from falling off.

Images