JP2011093159A - Lining material of pipe line and method of forming traction cable mounting hole for lining material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure in which a fiber layer 4 is free from deformation or destruction when a traction cable 3 is mounted in a traction cable mounting hole 2 for a lining material 1 and pulled. <P>SOLUTION: The method of forming a traction cable mounting hole for a lining material is such that, in a lining material 1 of pipe line having at least one or more fiber layers 4, a traction cable mounting hole 2 is drilled in the end part of the lining material 1, and that a reaction curable resin liquid 6 is impregnated in the fiber layers 4 in the periphery of the traction cable mounting hole 2 and cured. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a structure of a tow rope attachment hole for attaching a tow rope to the lining material and a method for forming a tow line attachment hole in the lining material.

  Conventionally, for the purpose of repairing or reinforcing a pipe line, a lining material is inserted into the pipe line, and the lining material is attached to the inner surface of the pipe line, and various methods are proposed as the lining method. Has been. In these methods, it is necessary to attach a tow rope to one end of the lining material in order to draw the lining material into the pipeline.

  A reversing method is widely used in which the lining material is inserted into the pipeline while being turned over by the fluid pressure. In this reversing method, a tow rope for drawing the lining material into the pipeline is not necessary, but after the lining material It is necessary to control the reversal of the lining material from the end, and it is necessary to attach a towline for that purpose.

  On the other hand, the lining material has a thick fiber layer for impregnating the reaction curable resin liquid because it is necessary to form a strong tube in the pipeline, and a plurality of the fiber layers are laminated as necessary. It is often used as a product.

  Thus, in order to attach the towline to the lining material, as shown in FIG. 1, a towline mounting hole 2 is drilled in the end portion of the lining material 1 and the towline 3 is inserted into the towline mounting hole 2. Is the most common.

  However, in this structure, the force acting on the tow rope 3 acts on the tow rope mounting hole 2 and acts strongly on the lining material 1 locally, so that the fiber layer can withstand that force. However, it may be deformed and destroyed.

  The fiber layer is thick in order to impregnate a large amount of the reaction curable resin liquid, but the strength of the fiber layer itself is not required. Is often used, and when a large force acts locally, the structure of the nonwoven fabric is likely to be destroyed. Even in the case where a woven fabric is used, if the force is applied locally, the weft yarn is displaced and the woven fabric structure is destroyed.

JP 2009-56783 A

  The present invention has been made in view of such circumstances, and the fiber layer in the lining material 1 is deformed even if the traction cable 3 is attached to the traction cable mounting hole 2 formed in the terminal portion of the lining material 1 and pulled. It is an object of the present invention to provide a structure of the lining material 1 that is not broken or broken and a method for forming the tow rope attachment hole 2.

  Thus, the lining material of the present invention is a pipe lining material having at least one or more fiber layers, the traction material mounting hole is drilled in the terminal portion of the lining material, The fiber layer is impregnated with a reaction curable resin solution and cured.

  In the first method of forming the tow rope attachment hole of the present invention, the tow rope attachment hole is drilled in the terminal portion of the lining material of the pipeline having at least one fiber layer, and the tow rope attachment hole is the center. Clamping is performed with a pressure plate from both sides over a range of twice or more the diameter of the tow rope mounting hole, a reaction curable resin liquid is pressed into the tow rope mounting hole and impregnated in the fiber layer, and the reaction After the curable resin liquid is cured and the clamping plate is removed, a through hole is formed in the reaction curable resin in which the tow rope attachment hole is filled.

  Further, in the second method of forming the tow rope attachment hole of the present invention, the tow rope attachment hole is formed in the terminal portion of the lining material of the pipe line having at least one or more fiber layers, and the tow rope attachment hole is the center. The rod is clamped from both sides with a pressure plate over a range of twice or more the diameter of the tow rope mounting hole, and a rod that is loosely fitted into the tow rope mounting hole from one of the pressure plates is installed upright. A reactive curable resin liquid is press-fitted through a gap between the rod and the tow rope mounting hole to impregnate the fiber layer, and the reactive curable resin liquid is cured. In these methods, it is preferable that the pinching surface of the pinching plate is curved in a substantially bowl shape with a depressed center.

  According to the present invention, when the tow rope 3 is attached to the tow rope attachment hole 2 and pulled, the fiber layer around the tow rope attachment hole 2 is impregnated and cured with the reaction curable resin solution. The range where the resin liquid is impregnated is integrated as a whole, and the traction force acts evenly over the entire range, so there is no local force in a narrow range, so a fiber layer is unnecessary. The lining material 1 can be pulled with a large force by the tow rope 3 without being deformed or broken.

A perspective view of the lining material with the tow rope attached Cross-sectional view of the main part of the lining material of the present invention Cross-sectional view showing a state in which a reactive curable resin liquid is impregnated around a tow rope mounting hole according to the present invention

  The present invention will be described below with reference to the drawings. FIG. 2 is a cross-sectional view of the lining material 1 of the present invention. The lining material 1 has a plurality of layers (four layers in the drawing) of cylindrical fiber layers 4 laminated on the outermost surface thereof. Is formed. A tow rope attachment hole 2 is formed in the terminal portion of the lining material 1.

  Thus, in the present invention, the fiber layer 4 around the tow rope mounting hole 2 in the lining material 1 is impregnated with a reactive curable resin liquid 6 such as an epoxy resin or an unsaturated polyester resin, and is cured by reaction. The fiber layer 4 is rigidly hardened. A resin layer 7 made of the reaction curable resin liquid is formed on the inner peripheral surface of the tow rope mounting hole 2.

  The range to be impregnated with the reaction curable resin liquid 6 in the fiber layer 4 varies depending on the diameter of the pipe line, the thickness and structure of the lining material 1, and the degree of force acting on the traction line 3 during lining, but at least the traction It is preferable to set it in a range that is at least twice the diameter of the cable attachment hole 2.

  If the range in which the reaction curable resin liquid 6 is impregnated is narrow, even if force is applied to the entire range, the force applied is small and the force applied locally is large, preventing deformation and breakage of the fiber layer 4. Can not do it.

  According to the present invention, since the fiber layer 4 is hardened with the reaction curable resin liquid 6, the lining material 1 within the range hardened with the reaction curable resin liquid 6 behaves as one body, and the tow rope attachment hole When a traction force is applied to the traction line 3 inserted through 2, the force uniformly acts on the entire lining material 1 within the hardened range.

  Accordingly, no force is applied locally to the portion where the tow cord 3 is inserted, and the force is applied to the fiber layer 4 evenly over a wide range. Therefore, the fiber layer 4 may be locally deformed or broken. It can be towed with great force.

  Next, FIG. 3 shows a state in which the fiber layer 4 around the tow rope mounting hole 2 is impregnated with the reactive curable resin liquid 6 and the tow rope mounting hole 2 is reinforced by the method of forming the tow rope mounting hole of the present invention. Is.

  In FIG. 3, 8 and 9 are clamping plates for clamping the lining material 1 around the tow rope mounting hole 2 from above and below, respectively, and the clamping surfaces 10 and 11 of the clamping plates 8 and 9 are recessed at the center. It is curved in a generally bowl shape. Further, the diameter of the lower pressing plate 8 needs to be at least twice the diameter of the tow rope mounting hole 2.

  A rod 12 that can be loosely fitted in the tow rope mounting hole 2 of the lining material 1 is erected at the center of the pinch surface 10 of the lower pinch plate 8. A press-fitting cylinder 13 having an inner diameter substantially coinciding with the inner diameter of the hole 2 is provided upright.

  Thus, the lining material 1 is placed on the lower clamping plate 8, and the rod 12 erected on the lower clamping plate 8 is loosely fitted in the tow rope mounting hole 2, and the upper clamping plate 9 is placed on the lining material 1. The press-fitting cylinder 13 is made to coincide with the tow rope mounting hole 2, and the lining material 1 is clamped between the lower pressing plate 8 and the upper pressing plate 9 in this state.

  As a result, the lining material 1 is strongly squeezed and compressed between the peripheral edge portions 14 of the both pressing plates 8 and 9, and the pressing surfaces 10 and 11 are recessed in a bowl shape inside the peripheral edge portion 14. Therefore, the degree of compression has become moderate. In addition, the surface of the pinching plates 8 and 9 has improved releasability by Teflon processing.

  In this state, when the resin liquid press-fitting tool 15 is attached to the press-fitting cylinder 13 and the reaction curable resin liquid 6 is press-fitted from the resin liquid press-fitting tool 15, the reaction curable resin liquid 6 is transferred from the press-fitting cylinder 13 into the tow rope attachment hole 2. And is inserted between the fibers of the fiber layer 4 through the gap between the inner peripheral surface of the tow rope attachment hole 2 and the rod 12.

  At this time, the reaction curable resin liquid 6 is impregnated into the fiber layer 4 by the pressure of the press-fitting, but the fiber layer 4 is strongly compressed by the peripheral edge portion 14 at the outer peripheral portion of the pinching plates 8 and 9, and thus the reaction hardening. The conductive resin liquid 6 can be impregnated up to the inside of the peripheral portion 14, but cannot exceed the portion compressed by the peripheral portion 14, and has a high density only within the range of the diameter of the pinching plates 8 and 9. Impregnated.

  By reacting and curing the reaction curable resin liquid 6 in this state, the lining material 1 is in a state where the range corresponding to the diameter of the pinching plates 8 and 9 is firmly solidified by the reaction curable resin liquid 6. The lining material 1 shown in 2 is obtained.

  In the present invention, the rod 12 is not always necessary. In the absence of the rod 12, the reaction curable resin liquid 6 that is press-fitted from the resin liquid press-fitting tool 15 fills the tow rope mounting hole 2 and is further impregnated in the conduit 4. In this state, the reaction curable resin liquid 6 is cured and the pinching plates 8 and 9 are removed, and then a through hole is formed in the reaction curable resin in which the inside of the tow rope attachment hole 2 is filled, as shown in FIG. A lining material 1 having such a tow rope mounting hole 2 is obtained.

  In the present invention, the pinching surfaces 10 and 11 do not necessarily have to be curved and may be flat, but when the pinching surfaces 10 and 11 are flat, the reaction curable resin liquid 6 is impregnated. If the range is not determined depending on the direction and the reaction curable resin liquid 6 is not excessively spread, the reaction curable resin liquid 6 may not be sufficiently impregnated partially. , 11 are preferably curved in a substantially bowl shape.

DESCRIPTION OF SYMBOLS 1 Liner material 2 Towing rope attachment hole 3 Towing rope 4 Fiber layer 6 Reactive curable resin liquid 8, 9 Clamping plate 10, 11 Clamping surface 12 Rod

Claims (4)

  In the lining material (1) of the pipe line having at least one or more fiber layers (4), a tow rope attachment hole (2) is drilled in a terminal portion of the lining material (1), and the tow rope attachment hole (2 The fiber lining resin (6) is impregnated with the reaction curable resin liquid (6) and cured, thereby lining the pipe.   A tow rope attachment hole (2) is drilled in a terminal portion of a lining material (1) of a pipe line having at least one fiber layer (4), and the tow rope attachment is made around the tow rope attachment hole (2). The pressure curable resin liquid (6) is press-fitted into the tow rope attachment hole (2) by pressing between both sides with a pressure plate (8, 9) over a range more than twice the diameter of the hole (2). Then, the fiber layer (4) is impregnated, the reaction curable resin liquid is cured, and after removing the pinching plates (8, 9), the reaction curable resin filled with the tow rope attachment hole (2) is penetrated. A method for forming a pulling rope attachment hole for a lining material, characterized by drilling a hole   A tow rope attachment hole (2) is drilled in a terminal portion of a lining material (1) of a pipe line having at least one fiber layer (4), and the tow rope attachment is made around the tow rope attachment hole (2). A pinch plate (8, 9) is clamped from both sides of the hole (2) over a range of two or more diameters, and the tow rope mounting hole is inserted from one pinch surface (10) of the pinch plate (8). A rod (12) that is loosely fitted to (2) is erected, and a reactive curable resin liquid (6) is press-fitted through a gap between the rod (12) and the tow rope mounting hole (2), and the fiber layer (4 ), And the reaction curable resin liquid (6) is cured. 4. The traction cord attachment of a lining material according to claim 2, wherein the clamping surface (10, 11) of the clamping plate (8, 9) is curved in a substantially bowl shape with a depressed center. 5. Hole formation method

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