WO2019198149A1 - Procédé de raccordement pour tuyau d'accouplement - Google Patents

Procédé de raccordement pour tuyau d'accouplement Download PDF

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Publication number
WO2019198149A1
WO2019198149A1 PCT/JP2018/015079 JP2018015079W WO2019198149A1 WO 2019198149 A1 WO2019198149 A1 WO 2019198149A1 JP 2018015079 W JP2018015079 W JP 2018015079W WO 2019198149 A1 WO2019198149 A1 WO 2019198149A1
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WO
WIPO (PCT)
Prior art keywords
pipe
shaft
connecting pipe
sleeve
axis
Prior art date
Application number
PCT/JP2018/015079
Other languages
English (en)
Japanese (ja)
Inventor
豊彦 米田
哲三 米田
則雄 道満
Original Assignee
ヨネ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ヨネ株式会社 filed Critical ヨネ株式会社
Priority to PCT/JP2018/015079 priority Critical patent/WO2019198149A1/fr
Publication of WO2019198149A1 publication Critical patent/WO2019198149A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/04—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
    • F16L41/06—Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor making use of attaching means embracing the pipe

Definitions

  • the present invention relates to a connecting method for connecting pipes.
  • a connecting pipe may be connected to the main pipe in order to transfer a fluid passing through the main pipe to a predetermined place.
  • a branch structure of a main pipe and a connecting pipe connected to the main pipe is disclosed in Patent Document 1, for example.
  • the branch structure securely seals the connection portion so that the fluid does not contact the connection portion between the main pipe and the connection pipe and the main pipe and the connection pipe are not corroded.
  • a saddle 30 and a band 38 are attached around the main pipe 11 (reference numerals refer to the drawing of Patent Document 1).
  • PIP construction method in which a new pipe is installed in an old pipe.
  • a two-layer pipe consisting of an existing pipe and a new pipe is formed.
  • the newly installed pipe serves as a main pipe and conveys fluid.
  • the worker attaches a saddle and a band to the new pipe (main pipe).
  • main pipe In order to secure the space necessary for this work, it is necessary to cut and remove a part of the existing pipe.
  • the problem to be solved by the present invention is a connection that does not require large-scale construction and does not require an operator to work near the connection point between the main pipe and the connection pipe. It is to provide a pipe connection method.
  • connection method for a connecting pipe is as follows.
  • a connection method for connecting a connecting pipe to a main body A first step of preparing a connecting pipe having an end wall, a guide hole penetrating the end wall, and a seal ring provided in the end wall;
  • a seventh step of attaching the branch structure to the hole using the fixture A seventh step of attaching the branch structure to the hole using the fixture.
  • the seventh step is A step of fitting a seal pipe having a flange into the hole; Fitting a sleeve having a threaded portion into a seal pipe, The flange is locked to the connecting pipe,
  • the seal pipe has an inner end protruding inside the main body,
  • the sleeve has an inner end protruding inside the body,
  • the seventh step further includes Folding the inner end of the sleeve along the inner end of the seal pipe so that the inner end of the seal pipe is in close contact with the main body; A step of screwing a nut into a threaded portion and pressing the flanged portion so that the flanged portion is in close contact with the connecting pipe.
  • the fixture is A cylindrical first axis having a rotation center axis and rotatable about the rotation center axis; A second axis disposed inside the first axis and rotatable about a rotation center axis; A third axis disposed inside the first axis and reversible around the reversal center axis disposed parallel to the rotation center axis; A wrench provided on the first shaft; A folded portion provided at one end of the third shaft; A first advancing / retracting mechanism for advancing and retracting the first axis, the second axis, and the third axis integrally with the rotation center axis; A second advancing and retracting mechanism for advancing and retracting the third axis in parallel with the reversal central axis relative to the first axis and the second axis; A first rotation mechanism for rotating the first shaft; A second rotating mechanism for rotating the second shaft to rotate one end of the third shaft; A reversing mechanism for reversing the third axis, The seal
  • the wrench part A socket for fitting the nut; A first engagement portion provided in the socket portion and engageable and disengageable with the sleeve; And a second engaging portion that is provided in the socket portion and can be engaged with and detached from the nut.
  • the first rotation mechanism is It has a rotating part that can rotate relative to the fixed part,
  • the fixture is further
  • a switching unit is provided that switches the rotating unit between being rotatable and impossible with respect to the fixed unit.
  • the nut is screwed with the wrench while the folded portion is in contact with the inner end of the sleeve.
  • the branch structure is A hole provided in a connection portion between the main body and the connecting pipe; A seal pipe that is fitted in the hole and has a flange portion that engages with the connecting pipe; A sleeve fitted into the seal pipe and having a threaded portion facing the flange portion inside the connecting pipe; A nut that is screwed into the thread portion,
  • the seal pipe has an inner end protruding inside the main body,
  • the sleeve has an inner end protruding inside the body, The inner end of the sleeve is folded along the inner end of the seal pipe so that the inner end of the seal pipe is in close contact with the main body, The nut presses the flange portion so that the flange portion is in close contact with the connecting pipe.
  • a washer is further provided between the flange portion and the nut.
  • the connecting pipe connection method according to the present invention can connect the connecting pipe from a distance, it does not require a large-scale construction, and an operator needs to work near the connection portion between the main pipe and the connecting pipe. There is no. Therefore, in the present invention, the construction period is shortened, the safety of the worker is improved, and the construction cost can be reduced.
  • A is sectional drawing following FIG. (B) is an enlarged view showing a portion B of (A).
  • (A) is sectional drawing which shows a part of fixture
  • (B) is BB sectional drawing of (A).
  • (A) is a plan view showing a part of the disassembled branch structure
  • (B) is a cross-sectional view taken along line BB of (A).
  • Sectional drawing which shows a fixture and a part of branch structure. Sectional drawing for demonstrating the attachment method of a branched structure.
  • Sectional drawing following FIG. Sectional drawing following FIG. Sectional drawing following FIG. FIG. 23 is a cross-sectional view following FIG.
  • a box culvert 105 is embedded in the ground portion 300, and the main pipe 100 is disposed inside the box culvert 105.
  • a road surface portion 301 made of asphalt is laid on the ground portion 300. That is, a structure including a box culvert 105, a ground portion 300, and a road surface portion 301 is provided outside the main pipe 100.
  • the installation stand 210 is installed on the road surface portion 301 at a position facing the main pipe 100.
  • the drilling machine 200 is attached to the installation table 210. 1 proceeds from the drilling machine 200 toward the main pipe 100 in the downward direction of FIG.
  • a center drill 201 and a core drill 202 are provided at the tip of the rotating shaft 203.
  • the center drill 201 and the core drill 202 drill the road surface portion 301, the ground portion 300, and the box culvert 105 by proceeding while rotating the rotating shaft 203. Thereby, the insertion hole 302 is formed in the road surface portion 301, the ground portion 300, and the box culvert 105. Thereafter, the rotary shaft 203 is retracted upward in FIG. 1 and the punching machine 200 is removed from the installation base 210.
  • the connecting tube 101 is inserted into the perforated hole 302.
  • the connecting pipe 101 includes an end wall 101c at the end.
  • the end wall 101c is provided with a small-diameter guide hole 101d at the center.
  • the end wall 101 c has an arc shape along the outer peripheral surface of the main pipe 100.
  • the end wall 101 c includes a seal ring 106.
  • the connecting pipe 101 includes a pair of flange portions 110a and 110b arranged at predetermined intervals on the upper portion.
  • the end 101c of the connecting pipe 101 inserted into the perforated hole 302 is brought into contact with the main pipe 100. Thereafter, the lower flange portion 110a of the connecting pipe 101 is connected to the installation base 210 via the adjusting bolt portion 210a. Thereby, the connecting pipe 101 is fixed to the installation base 210. The connecting pipe 101 is pressed against the main pipe 100 by the adjusting bolt part 210 a, and as a result, the main pipe 100 and the connecting pipe 101 are sealed with the seal ring 106.
  • the upper flange portion 110 b of the connecting pipe 101 is connected to the flange portion 400 a of the valve 400.
  • the valve 400 is attached to the opposite side of the end 101c of the connecting pipe 101.
  • a water pressure test pump 401 is attached to the valve 400.
  • the inside of the connecting pipe 101 is filled with water by the water pressure test pump 401, and the water pressure in the connecting pipe 101 is measured.
  • water pressure test pump 401 When the end wall 101c of the connection pipe 101 is sealed along the main pipe 100, water is filled between the guide hole 101d and the seal ring 106 of the connection pipe 101 and does not leak, so that a predetermined water pressure is maintained. .
  • the end wall 101c of the connecting pipe 101 is not sealed along the main pipe 100, water leaks from between the guide hole 101d and the seal ring 106 of the connecting pipe 101, so that the predetermined water pressure is not maintained.
  • the end wall 101 c of the connecting pipe 101 is arranged so as to properly contact the main pipe 100.
  • the water pressure test pump 401 is removed from the valve 400, and the drilling machine 200 is attached to the valve 400.
  • the rotary shaft 203 is moved toward the main pipe 100 in the downward direction in FIG.
  • a center drill 204 and a core drill 205 are provided at the tip of the rotating shaft 203.
  • the outer diameter of the core drill 205 is smaller than the inner diameter of the connecting pipe 101 and forms the hole 102.
  • the center drill 204 and the core drill 205 pierce the end wall 101c of the connecting pipe 101 and the main pipe 100 by advancing while rotating the rotary shaft 203. At this time, the center drill 204 is guided by the guide hole 101d. As a result, a hole 102 is formed in the main pipe 100 and the connecting pipe 101. Thereafter, the rotary shaft 203 is retracted upward in FIG. The valve 400 is closed so that the fluid in the main pipe 100 is not discharged from the connecting pipe 101 to the outside. Then, the drilling machine 200 is removed from the valve 400.
  • a fixture 10 described later is attached to the valve 400.
  • a seal pipe 1 or the like which will be described later, is attached to the distal end of the attachment 10 such as the first shaft 21.
  • the valve 400 is opened, and the first shaft 21 or the like proceeds downward in FIG.
  • the branch structure 50 mentioned later is attached to the main pipe 100 and the connecting pipe 101 as description of the attachment method of the branch structure 50 mentioned later.
  • another branch pipe 108 is attached to the valve 400 and the valve 400 is opened, whereby the fluid in the main pipe 100 is transferred through the connection pipe 101 and the branch pipe 108.
  • the installation base 210 is attached to the wall 107, and the drilling machine 200 is attached to the installation base 210.
  • the rotary shaft 203 proceeds toward the main pipe 100 in the left direction in FIG.
  • the center drill 201 and the core drill 202 drill the insertion hole 302 in the wall 107 by advancing while rotating the rotating shaft 203.
  • the drilling machine 200 is removed from the installation table 210.
  • the connecting pipe 101 is inserted into the insertion hole 302, and the end wall 101 c of the connecting pipe 101 is brought into contact with the main pipe 100.
  • the jack part 210b provided in the installation base 210 is adjusted so that the connection pipe 101 extends at right angles (horizontal direction) to the main pipe 100.
  • the flange portion 110a of the connecting pipe 101 is connected to the installation base 210 via the adjusting bolt portion 210a.
  • the end wall 101 c is linear along the outer peripheral surface of the main pipe 100.
  • the connecting pipe 101 is pressed against the main pipe 100 by the adjusting bolt part 210 a, and as a result, the main pipe 100 and the connecting pipe 101 are sealed with the seal ring 106.
  • the flange portion 110 b of the connecting pipe 101 is connected to the flange portion 400 a of the valve 400.
  • the valve 400 is attached to the connecting pipe 101.
  • a water pressure test pump 401 is attached to the valve 400.
  • the water pressure test pump 401 fills the inside of the connecting pipe 101 with water, and measures the water pressure in the connecting pipe 101.
  • the end wall 101c of the connection pipe 101 is sealed along the main pipe 100, water is filled between the guide hole 101d and the seal ring 106 of the connection pipe 101 and does not leak, so that a predetermined water pressure is maintained.
  • the end wall 101c of the connecting pipe 101 is not sealed along the main pipe 100, water leaks from between the guide hole 101d and the seal ring 106 of the connecting pipe 101, so that the predetermined water pressure is not maintained.
  • the end wall 101 c of the connecting pipe 101 is arranged so as to properly contact the main pipe 100.
  • the water pressure test pump 401 is removed from the valve 400, and the drilling machine 200 is attached to the valve 400.
  • 9 proceeds from the drilling machine 200 toward the main pipe 100 in the left direction in FIG.
  • the center drill 204 and the core drill 205 pierce the end wall 101c of the connecting pipe 101 and the main pipe 100 by advancing while rotating the rotary shaft 203. Then, the drilling machine 200 is removed from the valve 400.
  • the fixture 10 described later is attached to the valve 400.
  • the branch structure 50 mentioned later is attached to the main pipe 100 and the connecting pipe 101 as description of the attachment method of the branch structure 50 mentioned later.
  • another branch pipe 108 is attached to the valve 400 and the valve 400 is opened, whereby the fluid in the main pipe 100 is transferred through the connection pipe 101 and the branch pipe 108.
  • Branch structure The branch structure 50 will be described with reference to FIGS. 13 and 14.
  • the branch structure 50 is provided between the main pipe (main body) 100 and the connecting pipe 101 connected to the main pipe 100.
  • the connecting pipe 101 extends in the direction perpendicular to the main pipe 100 (radial direction) in order to transfer the fluid flowing through the main pipe 100 to another location.
  • the connecting pipe 101 includes the end wall 101c (FIG. 2B).
  • the end wall 101c is adapted to the outer peripheral surface of the main pipe 100.
  • the branch structure 50 includes a hole 102 provided at a connection portion between the main pipe 100 and the connecting pipe 101.
  • the hole portion 102 is continuously provided in the main pipe 100 and the saddle portion 101a of the connecting pipe 101, and has the same axis and the same diameter.
  • the branch structure 50 includes a seal pipe 1.
  • the seal pipe 1 is made of an elastically deformable material, and is made of rubber, for example.
  • the seal pipe 1 is fitted into the hole 102.
  • the outer diameter of the seal pipe 1 is slightly smaller than the diameter of the hole 102.
  • the seal pipe 1 has a flange portion 1 a that is locked inside the connecting pipe 101.
  • the flange portion 1 a protrudes outside the seal pipe 1.
  • the seal pipe 1 has an inner end 1 b that protrudes inside the main pipe 100 when fitted into the hole 102.
  • the branch structure 50 includes a sleeve 2.
  • the sleeve 2 is made of a plastically deformable material, and is made of, for example, metal.
  • the sleeve 2 is fitted into the seal pipe 1.
  • the outer diameter of the sleeve 2 is slightly larger than the inner diameter of the seal pipe 1. Therefore, when the sleeve 2 is fitted into the seal pipe 1 fitted into the hole 102, the seal pipe 1 comes into close contact with the inner surface of the hole 102.
  • the sleeve 2 has a screw portion 2a provided on the outer periphery.
  • the screw portion 2 a faces the flange portion 1 a of the seal pipe 1 inside the connecting pipe 101.
  • the sleeve 2 has an inner end 2 b that protrudes to the inside of the main pipe 100 when fitted into the hole 102 together with the seal pipe 1.
  • the branch structure 50 includes a nut 3.
  • the nut 3 is made of metal, for example.
  • the nut 3 has a screw portion 3a provided on the inner periphery.
  • the screw part 3 a of the nut 3 is screwed into the screw part 2 a of the sleeve 2.
  • the branch structure 50 includes a washer 4.
  • the washer 4 is made of metal, for example.
  • the washer 4 passes through the sleeve 2.
  • the washer 4 has a recess 4a.
  • the recess 4 a of the washer 4 is fitted in contact with the flange portion 1 a of the seal pipe 1.
  • the washer 4 is disposed between the seal pipe 1 and the nut 3.
  • the branch structure 50 includes an adjustment packing 5.
  • the adjustment packing 5 is made of, for example, a synthetic resin.
  • the adjustment packing 5 penetrates the seal pipe 1 and is locked by the flange portion 1a.
  • the adjustment packing 5 is disposed between the flange portion 1 a of the seal pipe 1 and the saddle portion 101 a of the connecting pipe 101.
  • the adjustment packing 5 adjusts the position of the seal pipe 1 according to the thickness of the main pipe 100. Therefore, when the main pipe 100 is thick, the adjustment packing 5 is thin. When the main pipe 100 is thin, the adjustment packing 5 is thick.
  • the centers of the penetrating part 1A of the seal pipe 1, the penetrating part 2A of the sleeve 2, the penetrating part 3A of the nut 3 and the penetrating part 4A of the washer 4 are arranged on the same axis. Further, the inner end 1b of the seal pipe 1 protrudes inside the through portion 1A before the sleeve 2 is fitted into the seal pipe 1. On the other hand, as shown in FIG. 13, when the sleeve 2 is fitted into the seal pipe 1, the inner end portion 1 b of the seal pipe 1 protrudes outward from the through portion 1 ⁇ / b> A.
  • the inner end 2 b of the sleeve 2 is folded outward along the inner end 1 b of the seal pipe 1.
  • the inner end portion 1 b of the seal pipe 1 is in close contact with the inner surface of the main pipe 100. Therefore, the fluid in the main pipe 100 does not contact the hole portion 102 and corrosion of the main pipe 100 and the connecting pipe 101 is prevented.
  • the inner end 1 b of the seal pipe 1 is covered with the inner end 2 b of the sleeve 2. Therefore, the area where the fluid in the main pipe 100 contacts the seal pipe 1 is reduced, and corrosion of the seal pipe 1 is prevented.
  • the nut 3 presses the flange portion 1 a of the seal pipe 1 together with the washer 4.
  • the flange portion 1 a of the seal pipe 1 is securely attached to the saddle portion 101 a of the connecting pipe 101. Therefore, the fluid in the main pipe 100 does not contact the hole portion 102 and corrosion of the main pipe 100 and the connecting pipe 101 is prevented.
  • Branch structure fixture A fixture for the branch structure 50 will be described with reference to FIGS.
  • the attachment 10 attaches the above-described branch structure 50 between the main pipe 100 and the connecting pipe 101.
  • the fixture 10 includes a cylindrical first shaft 21.
  • the first shaft 21 has the rotation center shaft 11.
  • the first shaft 21 is configured to be rotatable around the rotation center axis 11.
  • the fixture 10 includes a second shaft 22.
  • the second shaft 22 is disposed inside the cylindrical first shaft 21.
  • the second shaft 22 is configured to be rotatable around the rotation center axis 11.
  • the fixture 10 includes a third shaft 23.
  • the third shaft 23 is disposed inside the cylindrical first shaft 21.
  • the third axis 23 has an inversion center axis 12.
  • the inversion center axis 12 is arranged eccentrically in parallel to the rotation center axis 11.
  • the third shaft 23 is configured to be reversible around the reversal center axis 12. As will be described later, the seal pipe 1 and the sleeve 2 are attached to the second shaft 22 and the third shaft 23.
  • the fixture 10 includes a wrench portion 24 provided at one end of the first shaft 21.
  • the nut 3 that is screwed into the screw portion 2 a provided on the sleeve 2 is attached to the wrench portion 24.
  • the fixture 10 includes a folded portion 25 provided at one end 230 of the third shaft 23.
  • the folded portion 25 folds the inner end portion 2 b of the sleeve 2 so that the inner end portion 1 b of the seal pipe 1 is in close contact with the inner surface of the main pipe 100.
  • the folded portion 25 includes a roller that is disposed to be inclined with respect to the reversal center axis 12.
  • the fixture 10 includes a first advance / retreat mechanism 31 for advancing and retracting the first shaft 21, the second shaft 22, and the third shaft 23 integrally in parallel with the rotation center shaft 11.
  • the first advancing / retracting mechanism 31 includes a pair of screw shafts 310 extending in parallel with the first shaft 21.
  • the first advancing / retracting mechanism 31 includes a pair of nuts 311 screwed into one end of each screw shaft 310.
  • the first advance / retreat mechanism 31 includes a pair of sprockets 312 provided at the other end of each screw shaft 310.
  • Each sprocket 312 is connected by an endless belt (not shown). Therefore, when the operator rotates the head of one sprocket 312 with the tool 31A, both sprockets 312 rotate via the endless belt.
  • the nut 311 is held at a position away from the connecting pipe 101 by a predetermined distance.
  • the first shaft 21, the second shaft 22, and the third shaft 23 are configured to advance and retreat in parallel with the rotation center shaft 11 together with the screw shaft 310. Therefore, when the screw shaft 310 rotates forward and backward together with the sprocket 312, the first shaft 21, the second shaft 22, the third shaft 23, and the screw shaft 310 advance and retreat with respect to the nut 311 in parallel with the rotation center shaft 11.
  • the fixture 10 includes a second advancing / retracting mechanism 32 for advancing and retracting the third shaft 23 in parallel with the reversing central shaft 12 relative to the first shaft 21 and the second shaft 22.
  • the second advancing / retracting mechanism 32 includes a screw shaft 320 provided at the other end of the third shaft 23.
  • the second advancing / retracting mechanism 32 includes a nut 321 that is screwed onto the screw shaft 320 of the third shaft 23.
  • the second advancing / retracting mechanism 32 includes a lever 322 provided on the nut 321.
  • the third shaft 23 is configured to be capable of moving back and forth in parallel with the inversion center shaft 12 relative to the first shaft 21 and the second shaft 22. Therefore, when the operator rotates the nut 321 forward and backward together with the lever 322, the third shaft 23 advances and retreats in parallel with the reverse central shaft 12 via the screw shaft 320.
  • the fixture 10 includes a first rotation mechanism 41 for rotating the first shaft 21.
  • the fixture 10 includes a fixing portion 13 that is fixed to the connecting pipe 101.
  • the fixing part 13 is fixed to the flange part 101 b of the connecting pipe 101.
  • the first rotation mechanism 41 includes a rotation unit 410 that can rotate relative to the fixed unit 13.
  • the rotating unit 410 rotates together with the first shaft 21.
  • the fixed portion 13 pivotally supports the first shaft 21 in a rotatable manner.
  • the rotating unit 410 includes a first rotating unit 410a and a second rotating unit 410b.
  • the 1st rotation part 410a and the 2nd rotation part 410b are arrange
  • the 1st rotation part 410a supports the screw shaft 310 and the sprocket 312 rotatably.
  • the second rotating part 410b supports the nut 311.
  • the first rotation mechanism 41 includes a guide unit 411 for guiding the rotation unit 410 around the fixed unit 13.
  • the guide part 411 includes a roller 411 a provided in the second rotating part 410 b and a rail 411 b provided in the fixed part 13.
  • the roller 411a is fitted into the rail 411b.
  • the rail 411b extends around the rotation center axis 11.
  • the fixture 10 includes a switching unit 14 that switches the rotating unit 410 between being rotatable and not rotatable with respect to the fixed unit 13.
  • the switching unit 14 includes a pin 14 a provided in the second rotating unit 410 b and a hole 14 b provided in the fixed unit 13.
  • the rotating unit 410 can rotate with respect to the fixed unit 13.
  • the rotating part 410 is not rotatable with respect to the fixed part 13.
  • the fixture 10 includes a second rotation mechanism 42 for rotating the second shaft 22.
  • the second rotation mechanism 42 includes a transmission mechanism 420 and a lever 421.
  • the transmission mechanism 420 transmits the rotation of the lever 421 to the second shaft 22. Therefore, when the operator rotates the lever 421, the second shaft 22 rotates around the rotation center axis 11.
  • the second shaft 22 has one end 220.
  • the third shaft 230 has one end portion 230.
  • the one end portion 220 of the second shaft 22 and the one end portion 230 of the third shaft 230 are engaged with each other. Therefore, when the second shaft 22 rotates around the rotation center axis 11, the one end portion 230 of the third shaft 23 rotates around the rotation center axis 11 in synchronization therewith. Even if the one end portion 230 of the third shaft 23 is reversed, the one end portion 230 of the third shaft 23 rotates in synchronization with the rotation of the second shaft 22.
  • the fixture 10 includes a reversing mechanism 43 for reversing the third shaft 23.
  • the reversing mechanism 43 includes a key 430 and a lever 431.
  • the key 430 engages with a key groove (not shown) provided on the third shaft 23.
  • the keyway extends in the axial direction of the third shaft 23.
  • the key 430 is reversed 180 degrees forward and backward. Therefore, when the operator reverses the lever 431, the third shaft 23 is reversed around the reversal central axis 12.
  • the wrench portion 24 includes a socket portion 240 for fitting the nut 3 therein.
  • the socket part 240 has a disk part 240a and a cylindrical part 240b.
  • the disc part 240a is provided at the end of the cylindrical part 240b.
  • the disc part 240 a and the cylindrical part 240 b have a larger diameter than the first shaft 21.
  • the disc part 240 a is fixed to the first shaft 21.
  • the inner diameter of the cylindrical portion 240 b matches the outer diameter of the nut 3.
  • the wrench part 24 includes four first engaging convex parts 241.
  • the first engaging convex portion 241 is provided on the disc portion 240a and protrudes inside the cylindrical portion 240b.
  • the 1st engagement convex part 241 is arrange
  • the sleeve 2 includes four first engaging recesses 2c.
  • the first engaging recess 2 c is provided at the end of the sleeve 2.
  • the first engagement recess 2 c is disposed at a position corresponding to the first engagement protrusion 241 of the wrench portion 24.
  • the 1st engagement recessed part 2c is comprised so that a 1st engagement convex part 241 can be fitted and disengaged.
  • the wrench portion 24 includes four second engagement convex portions 242.
  • the second engagement convex portion 242 is provided on the cylindrical portion 240b and protrudes inside the cylindrical portion 240b.
  • the 2nd engagement convex part 242 is arrange
  • the second engagement convex portion 242 extends in the axial direction of the first shaft 21.
  • the nut 3 includes four second engaging recesses 3c.
  • the second engagement recess 3 c is provided on the outer periphery of the nut 3.
  • the second engagement recess 3 c is disposed at a position corresponding to the second engagement protrusion 242 of the wrench portion 24.
  • the 2nd engagement recessed part 3c is comprised so that a 2nd engagement convex part 242 can be fitted and disengaged.
  • the folded portion 25 is provided at one end portion 230 of the third shaft 23.
  • the folded portion 25 includes a roller portion 250 and a shaft portion 251.
  • the roller part 250 has a hollow part in the center.
  • the shaft portion 251 is disposed to be inclined with respect to the rotation center shaft 11 and the reversal center shaft 12.
  • the one end portion 230 of the third shaft 23 has a small end portion 230a and a large end portion 230b, and the roller portion 250 is disposed at the step portion.
  • One end 230 of the third shaft 23 is inverted around the inversion center axis 12.
  • the roller part 250 opposes the one end part 220 of the 2nd axis
  • the diameter of the combination of the small end part 230a and the one end part 220 and the diameter of the large end part 230b substantially correspond.
  • the one end portion 220 of the second shaft 22 and the one end portion 230 of the third shaft 23 are fitted and attached to the seal pipe 1, the sleeve 2, and the washer 4.
  • the nut 3 is screwed onto the sleeve 2 and attached, and is fitted into the wrench portion 24.
  • the first engaging convex part 241 of the wrench part 24 and the first engaging concave part 2c of the sleeve 2 are fitted, and the second engaging convex part 242 of the wrench part 24 and the second engaging concave part 3c of the nut 3 are fitted. And fit.
  • the above-mentioned fixture 10 is used. First, as shown in FIG. 17, the nut 3 is screwed onto the sleeve 2 and attached. Thereafter, as shown in FIG. 18, the seal pipe 1, the sleeve 2, and the washer 4 are fitted into the one end 220 of the second shaft 22 and the one end 230 of the third shaft 23. At that time, the nut 3 is fitted into the wrench portion 24. Further, the first engagement convex part 241 of the wrench part 24 and the first engagement concave part 2 c of the sleeve 2 are fitted. Further, the second engaging convex part 242 of the wrench part 24 and the second engaging concave part 3 c of the nut 3 are fitted.
  • a hole 102 is formed at a connection portion between the main pipe 100 and the connecting pipe 101.
  • the fixing portion 13 of the fixture 10 is fixed to the flange portion 101b of the connecting pipe 101. Thereafter, the first advancement / retraction mechanism 31 of the fixture 10 advances the first shaft 21, the second shaft 22, and the third shaft 23 toward the hole 102 in the downward direction in FIG. 19.
  • the seal pipe 1 is fitted into the hole 102 and the sleeve 2 is fitted into the seal pipe 1. Further, the flange portion 1 a of the seal pipe 1 is engaged with the connecting pipe 101, and the inner end portion 1 b of the seal pipe 1 is disposed inside the main pipe 100.
  • the first shaft 21, the second shaft 22, and the third shaft 23 are further advanced in a state where the flange portion 1a of the seal pipe 1 is locked to the connecting pipe 101. Thereby, the inner end portion 2 b of the sleeve 2 is disposed inside the main pipe 100. Further, the inner end 1b (FIG. 18) of the seal pipe 1 protruding inside the sleeve 2 is pressed by the sleeve 2 and protrudes outside the sleeve 2 (FIG. 19).
  • the first shaft 21, the second shaft 22, and the third shaft 23 are further advanced, and the nut 3 is pressed against the washer 4. Then, the first shaft 21, the second shaft 22, and the third shaft 23 are stopped. At this time, the roller portion 250 is disposed past the sleeve 2.
  • the third shaft 23 is reversed around the reversal center axis 12 by the reversing mechanism 43 of the fixture 10.
  • the roller portion 250 is inverted together with the one end portion 230 of the third shaft 23, and the recess portion of the roller portion 250 faces the inner end portion 2 b of the sleeve 2.
  • the sleeve 2 is stopped. Is stopped, and the sleeve 2 can be prevented from rotating together with the rotation of the one end portion 230 of the second shaft 22 and the third shaft 23. That is, it is possible to prevent the sleeve 2 and the roller portion 250 from rotating together (prevention of rotation).
  • the third shaft 23 is further retracted upward in FIG. 21, and the recessed portion of the roller portion 25 is brought into contact with the inner end portion 2 b of the folded sleeve 2. Further, by rotating the one end portion 230 of the third shaft 23, the inner end portion 2b of the sleeve 2 is further folded back slightly. By repeating these steps, as shown in FIG. 22, the inner end 2b of the sleeve 2 is largely folded back so that the inner end 1b of the seal pipe 1 is covered by the inner end 2b of the sleeve 2 and the inner surface of the main pipe 100 Close contact with.
  • the third shaft 23 is once moved downward in FIG. 22 to separate the roller portion 250 from the inner end portion 2 b of the sleeve 2. Accordingly, the first shaft 21, the second shaft 22, and the third shaft 23 can be retracted upward in FIG.
  • the rotation unit 410 is switched to be rotatable with respect to the fixed unit 13 by the switching unit 14 of the fixture 10. Then, the wrench portion 24 is rotated together with the first shaft 21 by the first rotation mechanism 41 of the fixture 10. As a result, the nut 3 rotates and advances toward the seal pipe 1 in the downward direction of FIG. Then, the nut 3 further presses the flange portion 1 a of the seal pipe 1, and the flange portion 1 a of the seal pipe 1 is firmly attached to the connecting pipe 101. At that time, the sleeve 2 is retracted upward in FIG. Thereby, the inner end 2 b of the sleeve 2 presses the inner end 1 b of the seal pipe 1 against the inner surface of the main pipe 100.
  • the switching unit 14 of the fixture 10 switches the rotating unit 410 so that it cannot rotate with respect to the fixed unit 13.
  • the third shaft 23 is advanced downward in FIG. 23, and the roller portion 250 is separated from the inner end portion 2 b of the sleeve 2.
  • the one end portion 230 of the third shaft 23 is reversed to the original position by the reversing mechanism 43 of the fixture 10. That is, the roller portion 25 is opposed to the one end portion 220 of the second shaft 22.
  • the first shaft 21, the second shaft 22, and the third shaft 23 are retracted upward in FIG. 23, and the fixture 10 is connected to the connecting tube 101. And the installation of the branch structure 50 is completed.
  • the seal pipe 1 may be made of lead having a shielding property against radioactivity. However, lead has a small elastic modulus. Therefore, the outer diameter of the seal pipe 1 is the same as or slightly smaller than the diameter of the hole 102, and the outer diameter of the sleeve 2 is slightly smaller than the inner diameter of the seal pipe 1. As a result, the seal pipe 1 and the sleeve 2 can be fitted into the hole 102.
  • the fixture 10 does not need to be used. That is, a process other than the rotation of the nut 3 is performed with a conventional fixture, and the nut 3 is rotated with another instrument having the wrench portion 24.
  • the switching unit 14 is not limited to the manual actuator described above, and may be an electric or hydraulic actuator.
  • the main body to which the connecting pipe is attached via the branch structure 50 is not limited to the main pipe 100 but includes a tank or the like that holds a fluid, and includes a conduit that carries the fluid or a container that holds the fluid.
  • the insertion hole 302 is formed in the structure provided outside the main body 100, the connecting pipe 101 is inserted into the insertion hole 302, and the main body 100 and the connecting pipe 101 are connected. Since the branch structure 50 is attached to the connection location, the connecting pipe 101 can be connected to the main body 100 from a distance. Therefore, in the present invention, a large-scale construction is not required, and an operator does not need to work near the connection portion between the main pipe 100 and the connecting pipe 101. In the present invention, the construction period is shortened, the safety of the worker is improved, and the construction cost can be reduced.
  • the fixture includes the wrench portion 24 on the first shaft 21, the step of fitting the seal pipe 1 and the sleeve 2 into the hole portion 102 and the step of rotating the nut 3 can be performed. Moreover, since the fixture 10 is provided with the fixing
  • the wrench portion 24 includes the first engagement portion 242 and the second engagement portion 242, the rotation and stop of the sleeve 2 and the nut 3 can be reliably controlled.
  • the nut 3 is rotated while the roller portion 250 is in contact with the inner end portion 2b of the sleeve 2, so that the sleeve 2 is stopped by the frictional force between the sleeve 2 and the roller portion 250.
  • the sleeve 2 and the nut 3 can be prevented from rotating together.
  • Main pipe (main body) 101 connecting pipe 101c end wall 101d guide hole 102 hole 106 seal ring 50 branching structure 1 seal pipe 1a flange 1b inner end 2 sleeve 2a screw 2b inner end 3 nut 4 washer 10 fixture 11 rotation center shaft 21 first 1 axis 22 2nd axis 12 reversal center axis 13 fixed part 14 switching part 23 3rd axis 24 wrench part 240 socket part 241 first engaging part 242 second engaging part 25 folding part 31 first advance / retreat mechanism 32 second advance / retreat Mechanism 41 First rotating mechanism 410 Rotating part 42 Second rotating mechanism 43 Reversing mechanism 200 Punching machine 105, 107, 300, 301 Structure 302 Insertion hole

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

La présente invention ne nécessite pas de construction à grande échelle et permet à des travailleurs de ne plus avoir besoin de travailler à proximité d'un emplacement de raccordement d'un tuyau principal et d'un tuyau d'accouplement. La présente invention comprend : une première étape consistant à préparer un tuyau d'accouplement (101) ayant une paroi d'extrémité (101c), un trou de guidage (101d) pénétrant dans la paroi d'extrémité (101c), et une bague d'étanchéité (106) disposée sur la paroi d'extrémité (101c) ; une deuxième étape consistant à former des trous d'insertion dans des structures (105, 300) disposées sur le côté externe d'un corps (100) à l'aide d'une machine de poinçonnage ; une troisième étape consistant à insérer le tuyau d'accouplement (101) dans un trou d'insertion (302) ; une quatrième étape consistant à mettre en butée la paroi d'extrémité (101) du tuyau d'accouplement (101) insérée dans le trou d'insertion (302) contre le corps (100) ; une cinquième étape consistant à appliquer une pression d'eau prescrite au tuyau d'accouplement (101) ; une sixième étape consistant à former un trou au niveau de l'emplacement de raccordement du corps (100) et du tuyau d'accouplement (101) en utilisant la machine de poinçonnage, où le trou se centre sur le trou de guidage (101d) ; et une septième étape consistant à fixer une structure ramifiée au trou au moyen d'un élément de fixation.
PCT/JP2018/015079 2018-04-10 2018-04-10 Procédé de raccordement pour tuyau d'accouplement WO2019198149A1 (fr)

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PCT/JP2018/015079 WO2019198149A1 (fr) 2018-04-10 2018-04-10 Procédé de raccordement pour tuyau d'accouplement

Applications Claiming Priority (1)

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PCT/JP2018/015079 WO2019198149A1 (fr) 2018-04-10 2018-04-10 Procédé de raccordement pour tuyau d'accouplement

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WO2019198149A1 true WO2019198149A1 (fr) 2019-10-17

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01193494A (ja) * 1988-01-27 1989-08-03 Toa Gurauto Kogyo Kk 管の接続方法
JPH062356A (ja) * 1992-06-19 1994-01-11 Nagano Yuki Kk 本管に枝管を接続する方法及び接続するとき使用する装置
JPH06100299B2 (ja) * 1988-04-23 1994-12-12 知勇 重盛 既設管等に対する管取付け工法
JPH07310863A (ja) * 1994-06-06 1995-11-28 Tomotake Shigemori 既設管等に対する管取付用の取付孔穿孔兼円形切断片回 収装置
JPH09170258A (ja) * 1995-12-20 1997-06-30 Daiwa Kiko Kk 埋設物に対する管体の取付工法
JP2000028035A (ja) * 1998-07-10 2000-01-25 Yuji Kaneko 既設管と打設管の接続方法及び接続用の筒状袋部材
JP2001355759A (ja) * 2000-06-13 2001-12-26 Hitachi Metals Ltd 分岐管取出し方法
JP2009041758A (ja) * 2007-08-13 2009-02-26 Nagano Yuki Kk 地盤に埋設された本管に孔を穿つための穿孔方法及びこれに用いる案内装置
US20140248088A1 (en) * 2009-08-12 2014-09-04 Lmk Technologies, Llc Apparatus and method for providing access to a buried pipe
WO2014148645A1 (fr) * 2013-03-21 2014-09-25 ヨネ株式会社 Procédé de moulage de robinet à enclenchement et outil de fixation de robinet à enclenchement utilisé dans ce procédé

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01193494A (ja) * 1988-01-27 1989-08-03 Toa Gurauto Kogyo Kk 管の接続方法
JPH06100299B2 (ja) * 1988-04-23 1994-12-12 知勇 重盛 既設管等に対する管取付け工法
JPH062356A (ja) * 1992-06-19 1994-01-11 Nagano Yuki Kk 本管に枝管を接続する方法及び接続するとき使用する装置
JPH07310863A (ja) * 1994-06-06 1995-11-28 Tomotake Shigemori 既設管等に対する管取付用の取付孔穿孔兼円形切断片回 収装置
JPH09170258A (ja) * 1995-12-20 1997-06-30 Daiwa Kiko Kk 埋設物に対する管体の取付工法
JP2000028035A (ja) * 1998-07-10 2000-01-25 Yuji Kaneko 既設管と打設管の接続方法及び接続用の筒状袋部材
JP2001355759A (ja) * 2000-06-13 2001-12-26 Hitachi Metals Ltd 分岐管取出し方法
JP2009041758A (ja) * 2007-08-13 2009-02-26 Nagano Yuki Kk 地盤に埋設された本管に孔を穿つための穿孔方法及びこれに用いる案内装置
US20140248088A1 (en) * 2009-08-12 2014-09-04 Lmk Technologies, Llc Apparatus and method for providing access to a buried pipe
WO2014148645A1 (fr) * 2013-03-21 2014-09-25 ヨネ株式会社 Procédé de moulage de robinet à enclenchement et outil de fixation de robinet à enclenchement utilisé dans ce procédé

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