JP2012229757A - Drilling method of fluid pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drilling method of a fluid pipe capable of opening an insert hole with no distortion for insertion and arrangement of a flow control body that shields the flow path in the fluid pipe.SOLUTION: In the drilling method of a fluid pipe 1, the dimension of the fluid pipe 1 made from a resin material in a pipe axis direction of the fluid pipe 1 is formed smaller than that in a radial direction, and an insert hole 1b into which a flow control body 11 that shields the conduit of the fluid pipe 1 is inserted is opened in a non-interruption state by a drilling means 52. A case 2 which covers the fluid pipe 1 in a tight contacting state is integrally fitted to the fluid pipe 1 and then the drilling means 52 arranged in the case 2 is pressurized in the radial direction of the fluid pipe 1 on an outer peripheral surface 1a of the fluid pipe 1, so that the insert hole 1b is drilled and shaped along the flow control body 11.

Description

  The present invention relates to a fluid pipe made of a resin material, and has an insertion hole for inserting a fluid control which is formed such that the dimension of the fluid pipe in the axial direction of the fluid pipe is shorter than the dimension in the radial direction and blocks the fluid pipe. The present invention relates to a method for drilling a fluid pipe that is drilled in a continuous flow state by a drilling means.

  Conventionally, a gate (fluid control) for blocking a flow path in an existing pipe (fluid pipe) made of a resin material such as a polyolefin-based material is hermetically sealed at a predetermined position of the existing pipe in order to be inserted into the existing pipe. A case (housing) is rotatably attached to an existing pipe, a cutting tool (drilling means) previously accommodated in the sealed case is brought into contact with the existing pipe, and then the sealed case is rotated in the circumferential direction of the existing pipe. There is a continuous flow insertion valve device having an opening (insertion hole) for inserting a gate into an existing pipe (see, for example, Patent Document 1).

Japanese Patent No. 4398162 (page 7, FIG. 5)

  However, in the continuous flow insertion valve device described in Patent Literature 1, when the opening (insertion hole) is drilled by the cutting tool (piercing means) by rotating the sealed case (housing), The fluid pipe is distorted by receiving a force from the cutting tool in the direction in which the sealed case rotates, and there is a problem that it is difficult to make the opening in an accurate shape.

  The present invention has been made paying attention to such problems, and a fluid pipe capable of drilling an insertion hole for inserting and arranging a control fluid that blocks a flow path in the fluid pipe into the fluid pipe without distortion. An object of the present invention is to provide a perforating method.

In order to solve the above-described problem, the fluid pipe drilling method of the present invention includes:
For a fluid pipe made of a resin material, an insertion hole for inserting a control fluid that is formed so that the dimension in the pipe axis direction of the fluid pipe is shorter than the dimension in the radial direction and shuts off the conduit of the fluid pipe, A method of drilling a fluid pipe that is drilled in a continuous flow state by a drilling means,
After attaching the casing that covers the fluid pipe in close contact with the fluid pipe, the perforating means disposed in the casing is directed in the radial direction of the fluid pipe with respect to the outer peripheral surface of the fluid pipe. By pressing, the insertion hole is formed in a shape that follows the fluid control.
According to this feature, the perforating means is formed in the sealed housing integrated with the fluid pipe, and the insertion hole is bored with the minimum necessary shape along the fluid control fluid. In addition to preventing leakage, since the fluid pipe made of a resin material is drilled while being held by the casing, the insertion hole can be drilled without distortion.

The fluid pipe drilling method of the present invention comprises:
A contact portion between the casing and the fluid pipe is integrally fused by heat fusion.
According to this feature, the contact portion between the casing and the fluid pipe can be fused to improve the adhesion between the fluid pipe and the casing, and the insertion hole of the fluid pipe is formed. The strength can be improved so that the strength of the portion does not deform against the pressing of the punching means.

The fluid pipe drilling method of the present invention comprises:
The perforating means includes a blade portion that penetrates in the radial direction of the fluid tube and pierces the insertion hole, and a guide portion that abuts the outer peripheral surface of the fluid tube and guides the blade portion that pierces the insertion hole. It is characterized by providing.
According to this feature, the blade portion is guided by the guide portion that is in contact with the outer peripheral surface of the fluid pipe at a position where the fluid pipe is drilled, so that the blade portion is accurately positioned on the outer peripheral surface of the fluid pipe. An insertion hole can be drilled.

The fluid pipe drilling method of the present invention comprises:
The blade portion includes an accommodating portion that accommodates a section of the fluid pipe generated by drilling the insertion hole.
According to this feature, it is possible to prevent the section from flowing out due to the fluid by detaching from the fluid pipe by storing the section generated by drilling the insertion hole in the storage section.

It is sectional drawing which shows the state which has arrange | positioned the pipe joint in an Example to the fluid pipe | tube. It is a sectional side view which shows the state which has arrange | positioned the pipe joint to the fluid pipe | tube. (A) is a partially broken side sectional view of the cutter member, and (b) is a bottom view of the cutter member. It is sectional drawing which shows the state by which the insertion hole was drilled in the fluid pipe | tube. It is a sectional side view which shows the state by which the insertion hole was drilled in the fluid pipe | tube. It is sectional drawing which shows attachment of the valve lid which accommodated the fluid control to a branch port. It is sectional drawing which shows the state in which the valve cover was attached to the branch port. It is a sectional side view which shows the state in which the valve cover was attached to the branch port.

  A mode for carrying out a method for drilling a fluid pipe according to the present invention will be described below based on examples.

  A method of drilling a fluid pipe according to an embodiment will be described with reference to FIGS. As shown in FIG. 1, the fluid pipe 1 of the present embodiment is made of a resin pipe such as high-density polyethylene formed in a substantially circular shape in cross section, and clean water as a fluid flows inside. As shown in FIGS. 7 and 8, an insertion hole 1 b for inserting a fluid control 11 for blocking a fluid flow path in the fluid pipe 1 is formed in a predetermined portion of the fluid pipe 1. It is like that. The fluid pipe 1 adjusts the flow rate of the fluid in the fluid pipe 1 by opening and closing the flow path by the control fluid 11 through the insertion hole 1b.

  The material of the fluid pipe 1 is not limited to high-density polyethylene, and may be other heat-bondable material made of polyolefin resin or predetermined resin. Furthermore, in this embodiment, the fluid in the fluid pipe 1 is clean water, but the fluid flowing in the fluid pipe 1 is not necessarily limited to clean water, and may be, for example, industrial water or sewage. It may be a fluid tube through which a fluid in a gas or gas-liquid mixed state flows.

  For the drilling of the fluid pipe 1 in the present embodiment, the pipe joint 2 and the fluid control 11 as a casing in the present invention described above and a punching device 50 described later are used. Among these, the pipe joint 2 fixedly attached to the outer peripheral surface 1a of the fluid pipe 1 is a so-called split T-shaped pipe. As shown in FIGS. 1 and 2, these pipe joints 2 are arranged from above with respect to the fluid pipe 1, and have a branch portion 3 that covers the upper side of the outer periphery of the fluid pipe 1, and below the fluid pipe 1. And a cover body 4 that covers the lower side of the outer periphery of the fluid pipe 1. The branch part 3 and the cover body 4 are made of a heat-sealable resin material such as high-density polyethylene.

  The branch part 3 includes an abutting part 3 a that abuts on the outer peripheral surface 1 a in the upper part of the fluid pipe 1. Inside the abutting portion 3a that abuts the outer peripheral surface 1a of the upper part of the fluid pipe 1, a heating wire 3b that generates heat when current flows surrounds an insertion hole 1b that is formed in the fluid pipe 1 to be described later. In addition, the contact portion 3a extends continuously over substantially the entire surface. Each end of the heating wire 3b is connected to a connection portion 6 provided on the outer surface of the branch portion 3 so as to be electrically connectable to an external power source.

  Further, flanges 3 c and 3 c are formed on the branch portion 3 so as to protrude from the contact portion 3 a toward the outer diameter direction of the fluid pipe 1. The width dimension of the flange 3c in the fluid pipe 1 in the pipe axis direction is formed to be substantially the same as the width dimension in the pipe axis direction of the fluid pipe 1 of the branch portion 3. Inside these flanges 3c, heating wires 3d are extended over substantially the entire length of the flanges 3c, 3c in the fluid pipe 1 in the tube axis direction. Each end of the heating wire 3d is connected to a connecting portion 7 provided on the outer surface of the flanges 3c, 3c so as to be electrically connected to an external power source.

  A branch port 3g is formed at an upper portion of the branch portion 3 so as to be directed upward along the tube axis direction of the fluid pipe 1 so as to be substantially orthogonal to the tube axis of the fluid pipe 1. The branch port 3g is formed to penetrate in the vertical direction, and an upper flange 3i is formed at the upper end of the branch port 3g.

  On the other hand, as shown in FIGS. 1 and 2, the cover body 4 has a width dimension in the tube axis direction of the fluid pipe 1 that is substantially the same as that of the branch portion 3, and abuts on the outer peripheral surface 1 a in the lower part of the fluid pipe 1. A contact portion 4a is provided. Inside the abutting portion 4a that abuts on the outer peripheral surface 1a in the lower part of the fluid pipe 1, a heating wire 4b that generates heat when a current flows extends continuously over substantially the entire abutting portion 4a. Each end of the heating wire 4b is connected to a connection portion 8 provided on the outer surface of the cover body 4 so as to be electrically connectable to an external power source.

  Further, flanges 4 c and 4 c are formed on the cover body 4 so as to protrude from the contact portion 4 a toward the outer diameter direction of the fluid pipe 1. The width dimension in the tube axis direction of the fluid pipe 1 of these flanges 4 c is formed to be substantially the same as the width dimension in the tube axis direction of the fluid pipe 1 of the cover body 4.

  These flanges 4 c are disposed so as to face the flange 3 c formed in the branch portion 3 by arranging the cover body 4 with respect to the fluid pipe 1 from below. In order to attach the pipe joint 2 configured in this manner to the fluid pipe 1, first, as shown in FIG. 1, the branch portion 3 is disposed from above with respect to the fluid pipe 1, and the cover body 4 is attached to the fluid pipe 1. It arrange | positions with respect to the fluid pipe | tube 1 from the downward direction.

  Next, both flanges 3c and 4c are tightened with bolts and nuts (not shown), and the flange 3c and the flange 4c are brought into close contact with each other. The contact portions 3a and 4a in the present embodiment are provided with locking claws (not shown). For this reason, by tightening bolts and nuts (not shown) to bring the flanges 3c and 4c into close contact with each other, the contact portions 3a and 4a are elastically deformed toward the fluid pipe 1, and the locking claws are connected to the fluid pipe. 1 bites into the outer peripheral surface 1a. These engaging claws bite into the outer peripheral surface 1 a of the fluid pipe 1, so that the pipe joint 2 is temporarily fixed to the fluid pipe 1 so as not to move.

  Then, a power cable connected to an external power source (not shown) is connected to each connection portion 6, 7 formed in the branch portion 3 and a connection portion 8 formed in the cover body 4, and power is supplied from the external power source for a predetermined time. Supply. The heating wires 3b, 3d, 4b supplied with power generate heat at a high temperature, so that the contact portions 3a, 4a made of resin, the outer peripheral surface 1a of the fluid pipe 1 in contact with the contact portions 3a, 4a, and the flange The space between 3c and 4c is gradually melted by heating.

  The melted contact portions 3a, 4a and the outer peripheral surface 1a of the fluid pipe 1 and the flanges 3c, 4c are mixed with each other, and the heat generation by the heating wires 3b, 3d, 4b is stopped and the temperature is lowered to room temperature. Solidify. In this way, the pipe joint 2 is watertightly attached to the fluid pipe 1 by heat fusion.

  These pipe joints 2 and the fluid pipe 1 can be attached in a watertight manner by heat fusion, and a general shut-off valve is used as a fluid control 11 (described later) for shutting off the fluid pipe 1 to improve the sealing performance. Therefore, the structure of the pipe joint 2 for maintaining the uninterrupted flow state can be simplified, and the manufacture thereof can be facilitated.

  Next, attachment of the fluid control 11 to the pipe joint 2 attached to the fluid pipe 1 will be described. First, as shown in FIGS. 4 and 5, the upper case 35 in which the working valve 36 and the piercing device 50 as the piercing means in the present invention are disposed is watertightly connected to the upper flange 3i of the branch port 3g. The perforating apparatus 50 is connected to a driving means (not shown) and has a shaft member 51 extending in the axial direction toward the fluid pipe 1 in the branch port 3 g, and a branch port fixed to the tip of the shaft member 51. A cutter member 52 as a drilling means in the present invention for drilling a non-circular insertion hole 1b (see FIG. 6) through 3g is mainly configured. Further, the cutter member 52 is provided with a perforated blade 52a as a sharp blade portion in the present invention.

  As shown in FIGS. 3A and 3B, the cutter member 52 is formed to be long in the circumferential direction of the fluid pipe 1 so as to follow the shape of the fluid control 11 described later. The blade 52 a is formed in an endless shape over the entire circumference of the tip of the cutter member 52.

  The cutter member 52 has an opening 52d as an accommodating portion in the present invention that opens downward along the shape of the cutter member 52. In the opening 52d, a guide plate 53 is disposed as a guide portion in the present invention, which is movable in the cutter member 52 in the axial direction of the shaft member 51. The guide plate 53 is formed in substantially the same shape as the opening 52 d when viewed from the bottom, and the outer peripheral surface facing the side of the cutter member 52 is formed on a vertical surface 53 a that is in sliding contact with the inner peripheral surface of the cutter member 52. Has been.

  Further, the lower end portion of the guide plate 53 is formed in a horizontal plane that is in contact with the outer peripheral surface 1a of the fluid pipe 1, and is disposed so as to slightly protrude toward the fluid pipe 1 from the perforating blade 52a. A guide bar 53 b that penetrates up to the upper side of the cutter member 52 is erected at the upper end of the guide plate 53, and a coil spring that urges the guide plate 53 toward the fluid pipe 1 around the guide bar 53 b. 53c is arranged.

  For this reason, the guide plate 53 moves in the opening 52 d in the axial direction of the shaft member 51, so that the cutter member 52 guides the guide plate while the inner peripheral surface of the opening 52 d is guided by the vertical surface 53 a of the guide plate 53. The shaft member 51 is moved relative to the shaft 53 in the axial direction.

  Next, perforation of the fluid pipe 1 by the perforation apparatus 50 in which the cutter members 52 are configured will be described. First, as shown in FIGS. 4 and 5, the cutter member 52 extends in the axial direction of the shaft member 51, so that the lower end portion of the guide plate 53 contacts the outer peripheral surface 1 a at the upper end portion of the fluid pipe 1. Let

  Then, the cutter member 52 is continuously extended in the axial direction of the shaft member 51, so that the cutter member 52 is continuously pressed against the outer peripheral surface of the fluid pipe 1 by the guide plate 53, so that the guide plate The position at which the cutter member 52 drills the insertion hole 1 b in the fluid pipe 1 is fixed by the frictional force generated between the lower end portion of the fluid 53 and the outer peripheral surface 1 a of the fluid pipe 1.

  Thereafter, the guide plate 53 is further extended to the outer peripheral surface 1a of the fluid pipe 1 while receiving the urging force from the coil spring 53c compressed along the guide rod 53b by the cutter member 52 extending in the axial direction of the shaft member 51. Stays in contact. During this time, the cutter member 52 is pushed toward the outer peripheral surface 1 a of the fluid pipe 1 along the vertical surface 53 a of the guide plate 53, and is pressed by the outer peripheral surface 1 a at the upper end of the fluid pipe 1. An insertion hole 1b is formed in the wall.

  In the process in which the cutter member 52 drills the insertion hole 1b in the fluid pipe 1, the portion of the fluid pipe 1 that is pressed by the cutter member 52 is elastically deformed by the pressing of the cutter member 52, and the cutter member 52 is inserted. By piercing the hole 1b, it is cut off from the fluid pipe 1 to become a slice 1e. The section 1e comes into contact with the inner peripheral surface of the cutter member 52 over substantially the entire circumference by the elastic restoring force acting in the opening 52d. The section 1e is accommodated and held in a state where it abuts on the guide plate 53 in the cutter member 52 by the frictional force generated between the section 1e and the inner peripheral surface of the cutter member 52.

  After the insertion hole 1b is drilled by the punching device 50, as shown in FIG. 6, the punching device 50 is pulled up and placed in the upper case 35, and then the work valve 36 is operated to stop the branch port 3g. Do water. Then, the punching device 50 is removed from the upper end portion of the upper case 35, and the outer cover 70 is watertightly connected to the upper end portion of the upper case 35 as shown in FIG. The outer cover 70 is provided with a pair of openings 71, 71 facing sideways, and these openings 71, 71 are watertightly closed by lid bodies 72, 72 and bolts / nuts 73.

  An arm (not shown) is attached to an upper end (not shown) of the outer cover 70 so as to be movable up and down. At the lower end of the arm, a valve lid 60 in which a fluid control 11 for previously blocking or opening the conduit of the fluid pipe 1 through the insertion hole 1 b is provided via an intermediate member 75. The valve lid 60 is disposed in the outer cover 70 when the arm is attached to the upper end portion of the outer cover 70. The arm and the upper end of the outer cover 70 are watertightly held by a rubber body (not shown). Furthermore, the intermediate member 75 is formed in a cylindrical shape, and a rotation operation portion 63a (described later) is inserted and disposed therein (see FIG. 7). In addition, the fluid control 11 in this embodiment is formed in a substantially plate shape in which the width dimension in the tube axis direction of the fluid pipe 1 is shorter than the width dimension in the radial direction of the fluid pipe 1.

  After the outer cover 70 is connected to the upper end of the upper case 35 in a watertight manner, the branch port 3g and the outer cover 70 are connected by a communication member such as a hose or a bypass pipe (not shown) having an on-off valve. Then, an air valve (not shown) provided at the upper end portion of the outer cover 70 is opened, and the working valve 36 is operated to open the branch port 3g, whereby the fluid pipe 1 is formed in the outer cover 70 and the branch port 3g. Fill with water that was flowing inside.

  After the inside of the outer cover 70 and the inside of the branch port 3g are filled with clean water, the air valve is closed, the on-off valve is opened, and the branch port 3g and the outer cover 70 are communicated with each other. The internal water pressure and the water pressure in the branch port 3g are always kept constant, and the valve lid 60 is pressed in an indefinite water state by a pressing means (not shown) attached in advance to the outer cover 70, so that the top of the branch port 3g The valve lid 60 is assembled in a sealed manner to the flange 3i.

  At this time, the inside of the branch port 3g and the inside of the outer cover 70 are filled with the clean water flowing in the fluid pipe 1 and have the same water pressure. Therefore, when the valve lid 60 is assembled to the upper flange 3i, The drag received by the valve lid 60 from the flowing water can be kept small. After the valve lid 60 is assembled to the upper flange 3i, the lid bodies 72, 72 are removed, and the intermediate member 75 is separated from the valve lid 60 through the openings 71, 71.

  As shown in FIGS. 6 and 7, the valve lid 60 is formed in a shape that can be inserted into the branch port 3 g that is opened along the shape of the substantially plate-shaped fluid control 11. It is watertightly inserted along the inner peripheral surface of the branch port 3g by an O-ring 61 provided along the outer periphery of the lower portion of the branch port 3g. Further, the position of the valve lid 60 is fixed by screwing a fixing bolt 62 from the outside of the branch port 3g so that the valve lid 60 is fixed. The fixing bolt 62 is screwed into the valve lid 60 to regulate the valve lid 60 in the vertical direction.

  As shown in FIGS. 7 and 8, the rotation screw 63 is rotatably attached to an insertion hole 64 drilled in the top of the valve lid 60 and has an upper end projecting outside the valve lid 60. Yes. The holding plate 65 is fixed to the upper end surface of the valve lid 60 with a bolt 66 and prevents the rotation screw 63 from being pulled out. With the above configuration, the rotating screw 63 is rotatable in both forward and reverse directions with respect to the valve lid 60 but does not move up and down. Reference numeral 63b denotes a screw portion having a peripheral surface screwed over substantially the entire length except for the upper end portion of the rotary screw 63.

  As shown in FIGS. 6 and 7, the screw top 67 is fitted in a guide groove 69 formed in the upper end portion of the fluid control 11 and screwed into the screw portion 63 b, and the upper end portion of the rotating screw 63. The screw part 63b rotates according to the rotation of the rotation operation part 63a formed in the above, so that the fluid control 11 can move up and down following the screw top 67 screwed along the screw part 63b.

  As shown in FIG. 8, the fluid control 11 has an insertion hole 68 into which the screw portion 63 b of the rotating screw 63 is inserted. Moreover, as shown in FIG.6 and FIG.7, the overhang | projection part 11a, 11a along the up-down direction is provided in the inner surface of the valve cover 60 or the branch port 3g in the outer surface of the upstream and downstream sides in the fluid control 11 It is provided so that sliding contact is possible along 60a. Since the overhanging portions 11a and 11a configured in this manner are in contact with the groove portion 60a, the rotation of the damping fluid 11 with the rotation of the rotating screw 63 is restricted, so that the damping fluid 11 is bent or twisted. It can be prevented.

  By pressing the valve lid 60 to which the fluid control 11 is attached in this manner toward the branch port 3g by the pressing means attached in advance to the outer cover after the work valve 36 is opened, The valve lid 60 is assembled in a sealed manner to the upper flange 3 i of the branch port 3 g while suppressing the drag received by the valve lid 60 from the water flowing in the pipe 1, and the fixing bolt 62 is screwed into the valve lid 60.

  Further, the on-off valve of the communication member is closed, and the upper case 35 and the outer cover 70 are removed from the upper flange 3i. Finally, the ring-shaped flange 56 is inserted into the valve lid 60, and the flange 56 and the branch port 3g are fastened by the bolt and nut 57.

  Thereafter, as shown in FIG. 7 and FIG. 8, the fluid control 11 moves downward by the rotation of the rotation operation portion 63a by a handle (not shown), so that the inner peripheral surface of the fluid pipe 1 and the inner peripheral surface of the insertion hole 1b are moved. While being elastically deformed over the entire circumference, the fluid pipe 1 is shut off by contacting water tightly, and the pipe of the fluid pipe 1 can be opened by moving upward by the rotation of the rotation operation part 63a by the handle. It becomes.

  As described above, in the method for drilling the fluid pipe 1 in the present embodiment, the cutter member 52 disposed in the pipe joint 2 after the pipe joint 2 covering the fluid pipe 1 in close contact with the fluid pipe 1 is attached integrally. Is pressed against the outer peripheral surface 1a of the fluid pipe 1 in the radial direction of the fluid pipe 1, so that the insertion hole 1b is formed in a shape along the fluid control 11, so that the cutter member 52 In the integrated sealed pipe joint 2, the insertion hole 1 b is formed in a minimum necessary shape along the fluid control 11, thereby preventing leakage of fluid from the fluid pipe 1 and resin. Since the fluid pipe 1 made of a material is drilled while being held by the pipe joint 2, the insertion hole 1b can be drilled without distortion.

  Also, the contact portions 3a and 4a between the pipe joint 2 and the fluid pipe 1 are fused together by heat fusion, so that the contact sections 3a and 4a between the pipe joint 2 and the fluid pipe 1 are fused. Thus, the adhesiveness between the fluid pipe 1 and the pipe joint 2 can be improved, and the strength of the portion where the insertion hole 1b of the fluid pipe 1 is drilled is not deformed against the pressing of the cutter member 52. Strength can be improved.

  The cutter member 52 includes a perforating blade 52a that enters in the radial direction of the fluid pipe 1 and forms the insertion hole 1b, and a perforating blade 52a that abuts the outer peripheral surface 1a of the fluid pipe 1 and perforates the insertion hole 1b. Since the drilling blade 52a is guided by the guide plate 53 that is in contact with the outer circumferential surface 1a of the fluid pipe 1, the drilling blade 52a is guided at the drilling position of the fluid pipe 1. The insertion hole 1b can be formed at an accurate position on the outer peripheral surface 1a of the fluid pipe 1.

  Further, since the perforating blade 52a has an opening 52d for accommodating the section 1e of the fluid pipe 1 generated by drilling the insertion hole 1b, the section 1e generated by drilling the insertion hole 1b is stored in the opening 52d. Thus, it is possible to prevent the section 1e from flowing out of the fluid pipe 1 due to the fluid.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the said Example, although the branch part 3 and the cover body 4 were heat-seal | fused, the attachment to the fluid pipe | tube 1 of the pipe joint 2 was performed, For example, flange 3c, 4c was tightened Then, the fitting of the pipe joint 2 to the fluid pipe 1 may be performed by the frictional force generated in the contact portions 3a, 4a and the outer peripheral surface 1a of the fluid pipe 1.

  Moreover, in the said Example, although the pipe joint 2 was comprised by the branch part 3 and the cover body 4, if the periphery of the insertion hole 1b can be sealed and it can adhere to the fluid pipe 1, the pipe joint 2 will be branched. You may comprise only the part 3. FIG.

  Moreover, in the said Example, although the branch part 3 and the cover body 4 which comprise the pipe joint 2 were comprised by the resin material which can be heat-sealed, such as a high density polyethylene, for example, a part of these branch parts or a cover body or You may make it improve the intensity | strength of a pipe joint by comprising all with a metal.

  Moreover, in the said Example, the control fluid 11 is formed in the substantially plate shape formed so that the width dimension of the pipe axis direction of the fluid pipe | tube 1 was shorter than the width dimension of the radial direction of the fluid pipe | tube 1, and the insertion hole 1b However, the shape of the insertion hole 1b drilled along the shape of the fluid control fluid and the shape of the fluid control fluid can block the flow path of the fluid pipe 1. If it is, it does not matter.

1 Fluid pipe 1a Outer peripheral surface 1b Insertion hole 1e Section 2 Pipe joint (housing)
11 Fluid control 52 Cutter member (perforation means)
52a Drilling blade (blade part)
52d Opening (accommodating part)
53 Guide plate (guide part)

Claims (4)

For a fluid pipe made of a resin material, an insertion hole for inserting a control fluid that is formed so that the dimension in the pipe axis direction of the fluid pipe is shorter than the dimension in the radial direction and shuts off the conduit of the fluid pipe, A method of drilling a fluid pipe that is drilled in a continuous flow state by a drilling means,
After attaching the casing that covers the fluid pipe in close contact with the fluid pipe, the perforating means disposed in the casing is directed in the radial direction of the fluid pipe with respect to the outer peripheral surface of the fluid pipe. A fluid pipe drilling method, wherein the insertion hole is drilled into a shape along the fluid control by pressing.   2. The fluid pipe drilling method according to claim 1, wherein the contact portion between the casing and the fluid pipe is integrally fused by heat fusion.   The perforating means includes a blade portion that penetrates in the radial direction of the fluid tube and pierces the insertion hole, and a guide portion that abuts the outer peripheral surface of the fluid tube and guides the blade portion that pierces the insertion hole. The method for drilling a fluid pipe according to claim 1, comprising:   4. The fluid pipe drilling method according to claim 3, wherein the blade part has a storage part for storing a section of the fluid pipe generated by drilling the insertion hole.

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