JP2013204789A - Leak prevention cover for piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a leak prevention cover with which emergency procedures for the leakage of a liquid from a connecting portion or the like of piping can be easily implemented in a short time.SOLUTION: A leak prevention cover for piping is configured to prevent the leakage of a liquid from a leak object location such as a connecting portion of piping and includes a tubular cover body 2 which is provided to cover the circumference of the leak object location and comprised of a thermal shrinkage material. By thermally shrinking both end portions 4a, 4b of the cover body 2 in an axial line direction, both the end portions 4a, 4b of the cover body 2 in the axial line direction are brought into tight contact with a circumferential surface of the leak object location and a gap to the leak object location is sealed. The cover body 2 is formed tubular by curving a sheet object and end portions 2a, 2b in a curving direction are integrally joined by a joint means 3.

Description

  The present invention relates to a piping leakage prevention cover, and more particularly to a piping leakage prevention cover that is effective in preventing leakage of liquid such as oil from a connecting portion of the piping.

  Oil-filled equipment such as oil-filled transformers and oil-filled capacitors as power equipment is connected to the oil tank of the cooler via the piping system, and the insulating oil filled inside the oil-filled equipment is used as the oil tank of the cooler. It is done to circulate between.

  In the piping system of oil-filled equipment with such a configuration, leakage of insulating oil may occur from the connecting part of the pipe, the mounting part of the on-off valve, etc. due to secular change, etc. First-aid measures are taken to close the walls with caulking. In addition, in order to prevent the leakage from the portion subjected to the first-aid treatment to expand, the periphery of the first-aided portion is covered with a vinyl cover or the like.

  An example of this type of cover is described in Patent Document 1. The cover (pipe cover) described in Patent Document 1 is a resin sheet formed in a cylindrical shape or a bag shape, and is a pipe connection part, a connection part between a pipe and a pipe part, and a connection part between the pipe parts. Covering the entire leaked part with a cover and temporarily storing the fluid leaking from the connecting part of the piping inside the cover, so that the fluid is prevented from leaking outside. .

JP 2006-266388 A

  By the way, the cover described in Patent Document 1 needs to use a cover according to the shape and size of the connecting portion of the pipe, etc., so it can cope with leakage from the connecting portion of the pipe having various shapes and sizes. In order to do so, it is necessary to manufacture and stock a plurality of types of covers having different shapes and sizes, which is costly and unrealistic.

  In addition, when the size of both ends of the cover does not match the size of the pipe side, a gap is formed between the both ends of the cover and the pipe side, and the fluid stored inside the cover from the gap There is a risk of leaking outside.

  The present invention has been made in view of the conventional problems as described above, and can cope with emergency measures for preventing leakage of liquid such as oil from connecting portions of pipes of various shapes and sizes, It is an object of the present invention to provide a piping leakage prevention cover that can quickly take emergency measures.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a piping leakage prevention cover for preventing leakage of liquid from a leakage target location such as a connecting portion of the piping, and is made of a heat shrink material provided so as to cover the periphery of the leakage target location. A cylindrical cover body is provided, and both ends in the axial direction of the cover body are heat-shrinked so that both ends in the axial direction of the cover body are in close contact with the peripheral surface of the leak target place, and the leak target place It is characterized by being comprised so that between may be sealed.

  According to the pipe leakage prevention cover of the present invention, by providing a cylindrical cover main body so as to cover the periphery of the leakage target portion such as a connecting portion of the pipe, by thermally contracting both ends in the axial direction of the cover main body, Both end portions in the axial direction of the cover main body are brought into close contact with the peripheral surface of the leakage target portion, and the gap between the leakage target portions is sealed. Therefore, it is possible to easily perform the emergency treatment of the liquid leakage from the leakage target portion in a short time. In addition, since both ends in the axial direction of the cover main body are thermally contracted, the cover body is in close contact with the peripheral surface of the leakage target portion, so that no gap is formed between the leakage target portion and the gap. Therefore, it is possible to sufficiently function as an emergency treatment for a certain period until the main repair of the leakage target portion.

  In the present invention, the cover main body may be formed by bending a sheet-like material into a cylindrical shape and integrally joining the end portions in the bending direction by a joining means.

  According to the leakage prevention cover for piping according to the present invention, by using one or two or more cover main bodies joined together, the entire periphery of the leakage target portion regardless of the shape and size of the leakage target portion. It is not necessary to manufacture and stock multiple cover bodies with different shapes and sizes according to the shape and size of the leak target location. It can be applied to emergency treatment of leak target locations of various shapes and sizes.

  Further, in the present invention, the cover main body may be one in which one or two or more of the cylindrical ones are separated in the axial direction, and the ends of the separated parts are integrally joined by a joining means. Good.

  According to the leak prevention cover for piping according to the present invention, by using one part of a cylindrical thing or two or more parts separated in the axial direction as a cover body, it is possible to prevent leaking parts of various shapes and sizes. It can be applied to emergency treatment.

  Moreover, in this invention, the binding tool which fixes this both ends to the said leakage object location side is good also as the outer surface side of the both ends of the axial direction of the said cover main body being mounted | worn.

  According to the pipe leakage prevention cover of the present invention, both ends in the axial direction of the cover main body are thermally contracted to be in close contact with the peripheral surface of the leakage target portion, and then both ends in the axial direction of the cover main body are attached with a binding tool. By tightening, both end portions in the axial direction of the cover main body can be firmly fixed to the leakage target portion side.

  Furthermore, in the present invention, packing may be attached to a peripheral surface of the leakage target portion, and inner surfaces of both end portions in the axial direction of the cover main body may be in close contact with the packing.

  According to the leak prevention cover for piping of the present invention, both end portions in the axial direction of the cover main body are thermally contracted at both ends in the axial direction of the cover main body and are in close contact with the packing attached to the peripheral surface of the leak target portion. And the sealability between the leakage target portions can be further enhanced.

  Furthermore, in this invention, it is good also as the adhesive material affixed on the inner surface of the said cover main body.

  According to the pipe leakage prevention cover of the present invention, the adhesive material on the inner surface side of both ends in the axial direction of the cover main body is adhered to the peripheral surface of the leakage target portion, so that both ends in the axial direction of the cover main body and the target of leakage are adhered. The sealing property between the peripheral surfaces of the places can be further enhanced.

  As described above, according to the piping leakage prevention cover of the present invention, the cover main body is attached to the leakage target portion, both ends in the axial direction of the cover main body are thermally contracted, and the peripheral surface of the leakage target portion is applied. Since it should just make it closely_contact | adhere, the emergency treatment of the leak target location can be performed easily in a short time. Moreover, since one or two or more sheet-like ones can be joined to form a cover body, it can be applied to emergency measures for leaks from various leak target locations having different shapes and sizes. , Can increase versatility.

It is the top view which showed the cover main body of one Embodiment of the leak prevention cover of piping by this invention. It is explanatory drawing which showed the state which curved the cover main body of FIG. It is explanatory drawing which showed the state which attached the cover main body of FIG. 1 to the leakage target location. It is the top view which showed the modification of the cover main body. It is explanatory drawing which showed the modification of the attachment state to the leak target location of a cover main body. It is explanatory drawing which showed the state which temporarily fixed the both ends of the cover main body to the piping side with the binding tool. It is explanatory drawing which showed the state which fixed the both ends of the cover main body to the piping side with the binding tool.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of a pipe leakage prevention cover according to the present invention. The pipe leakage prevention cover 1 according to the present invention can be applied to prevent leakage of oil, water, and other liquids from connecting parts of pipes for circulating liquids such as oil and water, and mounting parts of on-off valves. And in this Embodiment, it applies to prevention of the leakage of the oil 10 from the connection part (flange joint 9) of the piping 7 and 8 of piping systems of oil-filled equipment, such as an oil-filled transformer.

  That is, the pipe leakage prevention cover (hereinafter referred to as the leakage prevention cover 1) of the present embodiment includes a sheet-like cover body 2 made of a heat shrinkable material having flexibility, oil resistance, waterproofness, weather resistance, and the like. In the state where the cover body 2 is curved in a cylindrical shape, the cover body 2 is composed of joining means 3 that keeps the cover body 2 in a cylindrical shape by integrally joining the end portions 2a, 2b in the bending direction. ing.

  The cover body 2 is not limited to a sheet shape but may be a cylindrical shape. When a cylindrical body is used for the cover body 2, a part of the cylindrical body is cut off in the axial direction, or two portions of the cylindrical body are cut off in the axial direction, and the ends of the separated parts are joined. What is necessary is just to join integrally by a means.

  The cover body 2 is not particularly limited as long as it is a heat-shrinkable material having flexibility, oil resistance, waterproofness, weather resistance, and the like. For example, a heat-shrinkable tube manufactured by Furukawa Electric Co., Ltd. (Lapcotube (trade name); A material in which an adhesive material is attached to the inner surface of a polyethylene tube) can be used.

  The joining means 3 is welding (high-frequency welding, heat welding, ultrasonic welding), an adhesive, or the like, which is suitable for the material of the cover body 2. The joining means 3 is not limited thereto, and any joining means 3 may be used as long as it can integrally join the end portions 2a and 2b of the cover body 2 without causing oil leakage.

  In order to prevent oil leakage from the connecting portion of the pipes 7 and 8 (portion of the flange joint 9) using the leakage prevention cover 1 having the above-described configuration, first, as shown in FIGS. The sheet-like cover body 2 is bent into a cylindrical shape, covering the entire periphery of the ends 7a, 8a of the pipes 7, 8 to which the flange joint 9 and the flange joint 9 are attached. The parts 2 a and 2 b are joined together by the joining means 3.

  In this case, when one cover main body 2 cannot cover the entire periphery of the target portion, two or three or more cover main bodies 2 are joined by the joining means 3 as shown in FIG. Use. In addition, when it is necessary to cover the periphery of the target portion more than double, as shown in FIG. 5, two or three or more cover bodies 2 are joined, and this is applied around the target portion. Wind more than double.

  Next, a binding tool 5 such as a binding band is attached to both ends 4a and 4b in the axial direction of the cylindrical cover main body 2 attached so as to cover the periphery of the target portion, and the binding tool 5 is lightly tightened to cover the cover. Both end portions 4a, 4b in the axial direction of the main body 2 are temporarily fixed to the end portions 7a, 7b side of the pipes 7, 8.

  In this case, if necessary, an annular packing 6 is attached around the ends 7 a and 7 b of the pipes 7 and 8, and the seal between the pipe ends 7 and 8 and both ends 4 a and 4 b in the axial direction of the cover body 2 is attached. You may increase the nature. In the present embodiment, the packing 6 is attached to the ends 7a and 7b of the pipes 7 and 8.

  Next, as shown in FIG. 6, the hot air gun 11 (commercially available hot blaster, heat gun, etc.) is used to blow both ends 4a and 4b of the cover body 2 to thereby generate both ends 4a and 4a of the cover body 2. 4b is heat-shrinked, the binding tool 5 is removed and the heat shrinkage is further performed, the inner surfaces of both ends 4a and 4b of the cover body 2 are brought into close contact with the peripheral surfaces of the pipes 7 and 8, and the inner surface of the cover body 2 and the pipes 7 and 8 Seal between the peripheral surfaces.

  Then, as shown in FIG. 7, the binding tool 5 is again attached to the outer surfaces of the both end portions 4 a and 4 b of the cover body 2, and the binding tool 5 is firmly tightened so that the inner surfaces of the both end portions 4 a and 4 b of the cover body 2 are attached. The two ends 4a and 4b of the cover body 2 are firmly pressed against the peripheral surfaces of the pipes 7 and 8 to the pipes 7 and 8 side.

  In this case, as the cover main body 2, an adhesive material adhered to the inner surface of the heat shrinkable material is used, so that the adhesive material on the inner surface side of both end portions 4 a and 4 b of the cover main body 2 is adhered to the pipes 7 and 8 side. Thus, the sealing performance between the inner surfaces of the both end portions 4a and 4b of the cover body 2 and the peripheral surfaces of the pipes 7 and 8 can be further enhanced.

  In the leak prevention cover 1 of the present embodiment configured as described above, a sheet-like cover body 2 made of a heat shrinkable material having flexibility, oil resistance, waterproofness, weather resistance, and the like is used. Since the main body 2 is configured to cover the entire periphery of the leakage target portion, one cover main body 2 or two or more cover main bodies 2 are joined regardless of the shape and size of the leakage target portion. Thus, the present invention can be applied to the prevention of leakage at various leak target portions having different shapes and sizes.

  Further, the cover body 2 is curved to cover the entire area around the leakage target portion, and the two ends 2a2b in the bending direction are joined to each other by the joining means 3 so as to form a cylindrical shape. Since both ends 4a and 4b may be heat-shrinked and brought into close contact with the pipes 7 and 8, the cover body 2 can be easily attached to the leak target portion in a short time.

  Moreover, since the inner surfaces of both ends 4a4b of the cover body 2 are brought into close contact with the peripheral surfaces of the pipes 7 and 8 by heat shrinking the both ends 4a and 4b of the cover body 2, the outer diameters of the pipes 7 and 8 are reduced. Regardless of the size, the inner surfaces of both end portions 4a and 4b of the cover body 2 can be brought into close contact with the peripheral surfaces of the pipes 7 and 8. Therefore, a gap is not formed between the inner surfaces of both end portions 4a and 4b of the cover body 2 and the peripheral surfaces of the pipes 7 and 8, and the oil 10 does not leak through the gap.

  In addition, with the inner surfaces of both end portions 4a and 4b of the cover body 2 being in close contact with the peripheral surfaces of the pipes 7 and 8, the binding tool 5 is attached to the outer surface sides of the both end portions 4a and 4b of the cover body 2 By tightening the tool 5, the inner surfaces of both ends 4a, 4b of the cover body 2 are strongly pressed against the outer surfaces of the pipes 7, 8, so that both ends 4a, 4b of the cover body 2 The sealing property between the pipes 7 and 8 can be maintained, and the oil 10 can sufficiently function as an emergency treatment for a certain period until the repaired portion of the oil 10 is generated.

  In the above description, the sheet-like cover main body 2 is used. However, a cylindrical one or two or more parts separated in the axial direction may be used as the cover main body 2.

  Further, in the above description, the pipe leakage prevention cover 1 according to the present invention is used to leak the oil 10 from the connecting portion (flange joint 9) of the pipes 7 and 8 of the piping system of the oil-filled equipment such as the oil-filled transformer. Although applied to the prevention of oil leakage, it may be applied to oil leakage in other places. Moreover, you may apply not only to the piping system of an oil-filled apparatus but the prevention of the leak from the connection part of the piping of the piping system which distribute | circulates liquids, such as another oil and water.

DESCRIPTION OF SYMBOLS 1 Leakage prevention cover 2 Cover main body 2a, 2b End part 3 Joining means 4a, 4b End part 5 Binding tool 6 Packing 7, 8 Piping 7a, 8a End part 9 Flange joint 10 Oil 11 Hot air gun

Claims (6)

A leak prevention cover for piping that prevents leakage of liquid from leaking locations such as pipe connections,
Provided so as to cover the periphery of the leakage target portion, comprising a cylindrical cover body made of a heat-shrink material,
By thermally shrinking both ends in the axial direction of the cover main body, both ends in the axial direction of the cover main body are brought into close contact with the peripheral surface of the leak target portion so that the gap between the leak target portions is sealed. A piping leakage prevention cover characterized by being constructed of.   2. The pipe according to claim 1, wherein the cover body is formed by bending a sheet-like material into a cylindrical shape and integrally joining ends in the bending direction by a joining means. Leak prevention cover.   2. The cover body according to claim 1, wherein one or two or more cylindrical parts are separated in the axial direction and the ends of the separated parts are integrally joined by a joining means. Leakage prevention cover for listed piping.   The binding tool which fixes this both ends to the said leak target location side is mounted | worn with the outer surface side of the both ends of the axial direction of the said cover main body in any one of Claims 1-3 characterized by the above-mentioned. Leakage prevention cover for listed piping.   5. The packing according to claim 1, wherein packing is attached to a peripheral surface of the leak target portion, and inner surfaces of both end portions in the axial direction of the cover body are in close contact with the packing. Piping leak prevention cover.   The pipe leakage prevention cover according to any one of claims 1 to 5, wherein an adhesive material is attached to an inner surface of the cover main body.

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