JP5901480B2 - Damaged part sealing band in the tube - Google Patents

Description

The present invention, for repairing a damaged portion of the water pipe or tube in the wastewater pipes industrial such as tap or sewage relates to tube damage portion sealing bands.

  Conventionally, repair parts and repair methods have been proposed to repair damaged parts in water pipes such as water and sewage or industrial drainage pipes, and various repair methods are used at construction sites. I came.

  And the method of repairing a damaged part partially, and the repair components and method of repairing the whole area including a damaged part are proposed. That is, a cement or adhesive that hardens in water has been developed, and a method of scraping around the damaged part and injecting the adhesive into the part is known.

  Specifically, for example, Japanese Patent Application Laid-Open No. 2011-12787 discloses a pipe repair method for sealing a defect that causes a leakage of a fluid flowing through the pipe 1 so that the outer peripheral surface 11 of the pipe 1 surrounds the defect. The step of arranging the frame 2 on the pipe, the step of attaching the first jig 3 for pressing the opening edge of the frame 2 along the circumferential direction of the pipe 1 against the pipe 1, and the part along the axial direction of the pipe 1 The step of attaching the second jig 4 for pressing the opening edge of the frame body 2 to the pipe 1 and the first jig 3 and the second jig 4 are attached to the opening 20 of the frame body 2 are cured. A step of filling the mold sealant Q1, a step of closing the opening 20 of the frame 2 filled with the sealant with a lid, a step of curing the sealant after the step of closing with the lid, and a sealant The pipe repair method which has the process of removing a frame and a lid | cover after the process of hardening is disclosed.

JP 2011-12787 A (see FIG. 6)

  However, the method of scraping the periphery of the damaged portion and sealing the damaged portion by injecting an adhesive into the portion not only makes the scraping operation easy, but also prevents efficient work and increases costs. Not economical. Furthermore, there is a surface with poor reliability such as peeling of the adhesive due to sealing the damaged part.

  Further, the method disclosed in Japanese Patent Application Laid-Open No. 2011-12787 is expensive because a special jig is required, and the durability and stability of the fixing portion after the jig is removed. Anxiety remains.

  Under such circumstances, there is a need for a repair part and a repair method in which the repair work is simple and does not require labor, and the repair portion is stable and the sealing effect is sustainable.

The present invention solves the above-described problems, and lays an in-tube damaged portion sealing band for repairing a damaged portion in the tube in a portion including the damaged portion on the inner surface of the tube, and the band is attached to the inner surface of the tube. by injecting a sealing agent after having brought into close contact, and an object thereof is to provide a tube lesion sealing bands for repairing a damaged portion.

In order to achieve the above object, according to the first aspect of the present invention, in the in-pipe damaged part sealing band for repairing the damaged part in the pipe, both ends in the circumferential direction have wedge-shaped gaps and the inside of the pipe A band formed of a thin plate so as to be laid over the entire circumference, and a band with elastic sealing packings laid on both ends in the cylindrical direction, and a wedge on both ends of the band in the circumferential direction A driving wedge that is inserted into the gap and is configured to bring the band into close contact with the inner peripheral surface of the pipe, and each joint between the band and the driving wedge is in the circumferential direction, and the wedge driving direction And the other joint is formed as a concave surface, and the band and / or the driving wedge are formed with holes for sealing material after laying.

According to the second aspect of the present invention, in the in-pipe damaged part sealing band for repairing the damaged part in the pipe, both ends in the circumferential direction have a wedge-like gap and extend over the entire inner peripheral surface in the pipe. The band is formed by a thin plate divided into a plurality of strips and elastic sealing packing is laid on both ends in the cylindrical direction, and the gap is formed in a wedge shape at both ends in the circumferential direction of the band. And a banding wedge configured to bring the band into close contact with the inner peripheral surface of the pipe, and each joint portion between the band and the driving wedge is in a circumferential direction and one of the bands along the wedge driving direction. In-pipe damaged portion sealing band, wherein the joint portion is formed on the convex surface and the other joint portion is formed on the concave surface, and the band and / or the driving wedge is provided with a hole for sealing material after laying. .

According to the first aspect of the present invention, both ends in the circumferential direction are formed in a strip shape so as to be laid around the entire inner peripheral surface of the pipe having a wedge-shaped gap and both ends in the cylindrical direction. A band laid with elastic sealing packing on the side, and a drive configured to close the band to the inner peripheral surface of the band by inserting a gap formed in a wedge shape at both ends in the circumferential direction of the band Each of the joints between the band and the driving wedge is formed in a circumferential direction, with one joint formed as a convex surface and the other joint formed as a concave surface along the wedge driving direction, By sealing the sealant in the hole formed in the band and / or the driving wedge, the damaged portion in the tube can be repaired.

According to the second aspect of the present invention, in the damaged portion sealing band for repairing a damaged portion in the pipe, both ends in the circumferential direction have wedge-shaped gaps around the entire inner peripheral surface in the tube. A band formed of a thin plate divided into a plurality of strips and having a sealing packing having elasticity on both ends in the cylindrical direction, and the gap formed in a wedge shape at both ends in the circumferential direction of the band A driving wedge that is inserted and configured to closely contact the band with the inner peripheral surface of the pipe, and each joint between the band and the driving wedge is in a circumferential direction along the driving direction of the wedge It is possible to repair a damaged portion in a tube by forming one joint portion as a convex surface and the other joint portion as a concave surface and sealing the sealant after laying in the hole formed in the band and / or the driving wedge. it can.

It is installation sectional drawing of the in-tube damage part sealing band by one Embodiment of this invention. FIG. 2 is a longitudinal sectional view of a central portion in FIG. 1. It is an expanded sectional view of the principal part which uses the damage part sealing band in a pipe | tube of this invention for a laying pipe | tube. It is drawing which shows one shape of embodiment which divided | segmented the damage part sealing band in a pipe | tube of this invention into plurality. It is a shape figure of the driving wedge installed in the clearance gap between the both ends of the damaged part sealing band in a pipe | tube of this invention. It is a perspective view which shows the damaged part repair method of a prior art example.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view when the damaged portion sealing bands 22, 23, 24 according to the present invention are installed inside an existing drain pipe 21 or the like. The existing drain pipe 21 and the like are manufactured and installed, for example, as a fume pipe having an inner diameter of 1100 millimeters. This may be one of the solutions in the case where such a leaked portion 21a or the like may cause water leakage or partial defect of the drainage pipe 21 or the like, and repair of the damaged portion 21a is necessary.

  In order to repair such a damaged portion 21a, a damaged portion sealing band B formed of a stainless steel plate having a thickness of 5 mm and a width of 200 mm on the inner circumferential surface including the damaged portion 2 as shown in FIG. Is pasted. The damaged portion sealing band B may be composed of one sheet, but is composed of three sheets 22, 23, and 24 in this embodiment for convenience of transportation.

  Further, as shown in FIGS. 4 and 5, at the joint portions at both ends of the damaged portion sealing bands 22, 23, 24, one is a wide opening 25b and the other is a narrow opening 25a in order to insert a driving wedge 25. Configured as follows. That is, as shown in FIG. 1, the damaged portion sealing band is configured by connecting three bands 22, 23, and 24, and a driving wedge 25 is inserted into a joint portion at both ends formed on the upper side. A gap 28 is formed.

  As shown in FIG. 5, the driving wedge 25 is formed in an inclined wedge shape so as to fill the joint portions at both ends of the sealing bands 22 and 24. As shown in FIG. 5A, one is narrow and the other is 25a. It has a wedge shape with a wide width 25b. Further, on both sides of the inclined wedge-shaped end surface, elongated protrusions 25c are formed as shown in FIGS. 5 (b) and 5 (c). As shown in FIG. 4A, the elongated protrusions 25c on both sides of the end face are formed at the joint portions at both ends when the driving wedge 25 is inserted into the joint portions at both ends of the sealing bands 22, 24. Thin grooves 22a and 24a are fitted.

  As shown in an enlarged view in FIG. 4, the damaged portion sealing bands 22, 23, and 24 have wedge-shaped gaps 28 at both ends in the circumferential direction, and are laid around the entire inner peripheral surface of the pipe. It is formed in a band shape. That is, the central portion shown in FIG. 4 represents a joint portion at both ends of the bands 22 and 24, and the elongated wedges 25c and 25c are formed on the driving wedge 25 that is one of the joint portions, and the sealing band 22 that is the other. 24 is formed with thin grooves 22a and 24a which engage with the grooves. Further, as shown in FIG. 3, in the cross section, dent grooves 22 a and 22 a are formed on both left and right ends in the cylindrical direction, and elastic sealing packings 22 b and 22 b are laid in the dents, respectively.

  For laying the damaged part sealing band, the three bands 22, 23, 24 are connected and temporarily fixed to the inner surface of the drain pipe 21, etc., and finally the driving wedge 25 is inserted from the cylindrical direction on the inner surface of the drain pipe 21, etc. It is inserted into the gap 28 at the joint portion at both ends. That is, when inserted into the gap 28 from the narrow width portion 25a of the driving wedge 25 from one wide mouth portion in the cylindrical direction to the other narrow mouth portion, both ends of the sealing bands 22 and 24 are sequentially pulled apart. Works. That is, it means that the inner diameter of the entire band swells greatly, thereby acting so that the sealing bands 22, 23, 24 are brought into close contact with the inner surface of the drain pipe 21 and the like.

  In this way, when the driving wedge 25 is inserted into the gap 28 between the sealing bands 22 and 24, the sealing bands 22, 23, and 24 are brought into close contact with the inner surface of the drain pipe 21, etc. An elastic sealing packing 22b laid in the formed groove grooves 22a and 22a is pressed against the inner surface of the drain pipe 21 and the like. The sealing packing 27 is formed using a special rubber having a property of expanding with water. A narrow space sealed by the sealing packing 22b is formed between the sealing bands 22, 23, 24 and the inner surface of the drain pipe 21 or the like.

  On the other hand, small holes 26 are formed in several places in the sealing packing 22b and the driving wedge 25, and a urethane-based resin is used in a narrow space sealed by the sealing packing 22b from the small holes 26 using a special jig. 27 is injected, and the damaged portion 21a generated on the inner surface of the drain pipe 21 or the like can be completely sealed to repair inconvenience such as water leakage. The small holes 26 are shown in FIG. 5, but are also formed in the sealing bands 22, 23, 24, but are omitted in other drawings.

  FIG. 3 shows a state in which the urethane resin 27 is injected into the narrow space sealed by the sealing packing 22b and the damaged portion 21a generated on the inner surface of the drain pipe 21 or the like is completely sealed. Yes.

  Here, in order to prevent the displacement in the cylindrical direction at each joint portion of the three damaged portion sealing bands 22, 23, 24, as shown in FIGS. 4 (b) and (c), The end surface is formed into a concave surface and the other end surface is formed into a convex surface, and the concave and convex surfaces are fitted together to ensure the joining. Further, in order to securely fix the damaged portion sealing bands 22, 23, 24 and the driving wedge 25 to the inner surface of the drain pipe 21 or the like, a screw hole 29 is formed as illustrated for the driving wedge 25 in FIG. When an anchor bolt (not shown) is attached to the screw hole 29 and tightened, it is difficult to cause a positional shift and can be firmly fixed. Although the damaged portion sealing bands 22, 23, 24 are not shown, a screw hole similar to the screw hole 29 illustrated in FIG. 5 is formed, and is securely fixed to the inner surface of the drain pipe 21 or the like by an anchor bolt. .

  In the above embodiment, the urethane resin 27 is injected into the narrow space sealed by the sealing packing 22b to seal the damaged portion 21a generated on the inner surface of the drain pipe 21 or the like. Needless to say, the present invention is not limited to this, and the damaged portion sealant such as a water-swellable material can be appropriately replaced. Moreover, in the said Example, although it divides | segments into the three damage part sealing bands 22, 23, 24, when the weight of a component single body becomes the obstruction in transportation, the division | segmentation number, such as four pieces or five pieces, suitably Can be changed. Further, the damaged portion sealing bands 22, 23, 24 are not limited to stainless steel materials, and appropriate materials based on advanced technology can be applied as appropriate.

  In addition, this invention is not limited to the said embodiment, Embodiment can be changed suitably and implemented within the range of the technical idea of this invention.

21; Existing drain pipe 21a; Damaged parts 22, 23, 24; Damaged part sealing band 25; Driving wedge 26; Small hole 27; Damaged part sealant (urethane-based resin)

Claims (2)

In the damaged part sealing band for repairing the damaged part in the pipe,
Both ends in the circumferential direction have wedge-shaped gaps and are formed into strips with a thin plate so as to be laid over the entire inner peripheral surface of the pipe, and elastic sealing packing is laid on both ends in the cylindrical direction With the band,
A driving wedge which is inserted into a gap formed in a wedge shape at both ends in the circumferential direction of the band and configured to closely contact the band with the inner peripheral surface of the pipe;
The joints of the band and the driving wedge are circumferential, and one joining part is formed as a convex surface and the other joining part is formed as a concave surface along the wedge driving direction, and the band and / or the driving wedge is formed. A damaged band sealing band in a tube, wherein a hole for sealing a sealing agent is formed in the wedge after laying. In the damaged part sealing band for repairing the damaged part in the pipe,
Both ends in the circumferential direction have wedge-shaped gaps and are formed into strips with a thin plate divided into a plurality over the entire inner peripheral surface of the pipe, and elastic sealing packing is laid on both ends in the cylindrical direction With the band ,
A driving wedge configured to be inserted into the gap formed in a wedge shape at both ends in the circumferential direction of the band and configured to closely contact the band with the inner peripheral surface of the pipe;
Each joint between the driving wedge and the respective bands are respectively formed on the convex surface of one of the joint along a circumferential direction driving of the wedge and the other joint concave, the band and / or An in-tube damaged portion sealing band, wherein a hole for sealing a sealing agent is formed in the driving wedge after laying .

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