WO2018163415A1 - Structure de ramification, procédé de fixation d'une structure de ramification, et outil de fixation d'une structure de ramification - Google Patents

Structure de ramification, procédé de fixation d'une structure de ramification, et outil de fixation d'une structure de ramification Download PDF

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Publication number
WO2018163415A1
WO2018163415A1 PCT/JP2017/009752 JP2017009752W WO2018163415A1 WO 2018163415 A1 WO2018163415 A1 WO 2018163415A1 JP 2017009752 W JP2017009752 W JP 2017009752W WO 2018163415 A1 WO2018163415 A1 WO 2018163415A1
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WO
WIPO (PCT)
Prior art keywords
sleeve
shaft
pipe
inner end
seal pipe
Prior art date
Application number
PCT/JP2017/009752
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/JP2017/009752 priority Critical patent/WO2018163415A1/fr
Priority to JP2019504276A priority patent/JP6863624B2/ja
Publication of WO2018163415A1 publication Critical patent/WO2018163415A1/fr

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    • 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
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/12—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe using attaching means embracing the pipe

Definitions

  • the present invention relates to a branch structure, a method for attaching the branch structure, and a fixture for the branch structure.
  • a branch 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 branch pipe connected to the main pipe is disclosed in Patent Document 1, for example.
  • the branch pipe 101 extends in a direction perpendicular to the main pipe 100.
  • the branch pipe 101 includes an arcuate saddle part 101a that fits the outer periphery of the main pipe 100, and a flange part 101b for connecting another connecting pipe (not shown).
  • An arc-shaped band 103 that fits the outer periphery of the main pipe 100 is disposed to face the saddle portion 101 a of the branch pipe 101.
  • the saddle portion 101 a and the band 103 of the branch pipe 101 are connected by a pair of bolts 104. As a result, the branch pipe 101 is brought into close contact with the main pipe 100 via the saddle portion 101a.
  • a hole portion 102 is formed at a connection portion between the main pipe 100 and the saddle portion 101 a of the branch pipe 101.
  • the rubber seal pipe 1 is fitted into the hole 102.
  • the seal pipe 1 has a flange portion 1a.
  • the flange portion 1 a is locked to the saddle portion 101 a inside the branch pipe 101.
  • the seal pipe 1 has an inner end portion 1 b that protrudes inside the main pipe 100.
  • a metal sleeve 2 is fitted into the seal pipe 1.
  • the sleeve 2 has a flange portion 2c.
  • the flange portion 2 c is engaged with the flange portion 1 a of the seal pipe 1 inside the branch pipe 101.
  • the sleeve 2 has an inner end 2 b that protrudes to the inside of the main pipe 100.
  • the inner end 2b of the sleeve 2 is folded along the inner end 1b of the seal pipe 1 so that the inner end 1b of the seal pipe 1 is in close contact with the inner surface of the main pipe 100.
  • the inner end 1 b of the seal pipe 1 is covered with the inner end 2 b of the sleeve 2.
  • the flange portion 2 c of the sleeve 2 presses the flange portion 1 a of the seal pipe 1 and comes into close contact with the saddle portion 101 a of the branch pipe 101.
  • the flange portion 1a of the seal pipe 1 is in close contact with the saddle portion 101a of the branch pipe 101, and the inner end portion 1b of the seal pipe 1 is in close contact with the inner surface of the main pipe 100. Therefore, the fluid passing through the main pipe 100 and the branch pipe 101 via the sleeve 2 is configured not to contact the hole 102. That is, when the fluid contacts the hole 102, the main pipe 100 and the branch pipe 101 may corrode through the hole 102, but if the fluid does not contact the hole 102, there is no possibility of corrosion.
  • the force with which the flange portion 2c of the sleeve 2 presses the flange portion 1a of the seal pipe 1 is constant. Therefore, when the thickness of the main pipe 100 or the like is small, there is a problem that the compressive force with respect to the flange portion 1a of the seal pipe 1 becomes small and the flange portion 1a is not securely adhered to the branch pipe 101. Further, when the thickness of the main pipe 100 or the like is large, there is a problem in that the compressive force on the flange portion 1a of the seal pipe 1 is increased, and the flange portion 1a is distorted.
  • Patent Document 1 discloses a method for attaching a conventional branch structure.
  • a roller or the like for folding back the inner end portion 2b of the sleeve 2 is pulled out from the sleeve 2
  • a pulling force is applied to the sleeve 2 from the flange portion 2c toward the outside by the roller or the like coming into contact with the sleeve 2.
  • the flange portion 1a of the seal pipe 1 is separated from the saddle portion 101a of the branch pipe 101, or the inner end portion 1b of the seal pipe 1 is strongly pressed against the main pipe 101 to cause distortion.
  • the problem to be solved by the present invention is to provide a branching structure, a branching structure attaching method, and a branching structure attaching tool capable of reliably sealing a connection portion between a main pipe and a branch pipe.
  • the branch structure according to the present invention is: A branch structure provided between a main body and a branch pipe connected to the main body, A hole provided in a connection portion between the main body and the branch pipe; A seal pipe having a flange portion fitted into the hole portion and locked to the branch pipe; A sleeve fitted into the seal pipe and having a threaded portion facing the flange portion inside the branch 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 branch pipe.
  • a washer is further provided between the flange portion and the nut.
  • the fixture according to the present invention is: An attachment for attaching a branch structure provided between a main body and a branch pipe connected to the main body, 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 first
  • 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 mounting method according to the present invention is as follows.
  • the seal pipe has an inner end protruding inside the main body,
  • the sleeve has an inner end protruding inside the body,
  • the mounting method is further 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 the nut into the threaded portion and pressing the flanged portion so that the flanged portion is in close contact with the branch pipe.
  • the method further includes the step of disposing a washer between the flange portion and the nut.
  • the nut is screwed with the wrench while the folded portion is in contact with the inner end of the sleeve.
  • the branch structure, the branch structure attachment method, and the branch structure attachment according to the present invention can securely seal the connection portion between the main body and the branch pipe.
  • Sectional drawing which shows a branched structure Sectional drawing which shows a part of disassembled branch structure. Sectional drawing which shows the fixture of a branch structure.
  • (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. Sectional drawing which shows the conventional branch structure.
  • the branch structure is provided between the main pipe (main body) 100 and the branch pipe 101 connected to the main pipe 100.
  • the branch pipe 101 extends in a 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 branch pipe 101 includes an arcuate saddle portion 101 a that fits the outer periphery of the main pipe 100.
  • the branch pipe 101 includes a flange portion 101b for connecting another connection pipe (not shown).
  • An arc-shaped band 103 adapted to the outer periphery of the main pipe 100 is in close contact with the main pipe 100 so as to face the saddle portion 101a of the branch pipe 101.
  • a pair of bolts 104 connects the saddle portion 101 a of the branch pipe 101 and the band 103 to connect the branch pipe 101 to the main pipe 100.
  • the saddle portion 101 a of the branch pipe 101 includes a seal ring 106. The seal ring 106 is in close contact with the main pipe 100 and seals between the main pipe 100 and the branch pipe 101.
  • the branch structure includes a hole 102 provided at a connection portion between the main pipe 100 and the branch pipe 101.
  • the hole portion 102 is continuously provided in the main pipe 100 and the saddle portion 101a of the branch pipe 101, and has the same axis and the same diameter.
  • the branch structure 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 branch 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 has 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 part 2 a faces the flange part 1 a of the seal pipe 1 inside the branch 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 has 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 has washers 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 has 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 branch 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. 1, 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 102, and corrosion of the main pipe 100 and the branch 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 adhered to the saddle portion 101 a of the branch pipe 101. Therefore, the fluid in the main pipe 100 does not contact the hole 102, and corrosion of the main pipe 100 and the branch pipe 101 is prevented.
  • the attachment 10 attaches the above branch structure between the main pipe 100 and the branch 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 branch 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 branch pipe 101.
  • the fixing portion 13 is fixed to the flange portion 101 b of the branch 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 reverses forward and reverse by 180 °. Therefore, when the operator reverses the lever 431, the third shaft 23 is reversed around the reversal central axis 12.
  • the wrench part 24 includes a socket part 240 into which the nut 3 is fitted.
  • 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-described fixture 10 is used. First, as shown in FIG. 5, the nut 3 is screwed onto the sleeve 2 and attached. Thereafter, as shown in FIG. 6, the seal pipe 1, the sleeve 2, and the washer 4 are fitted into the one end portion 220 of the second shaft 22 and the one end portion 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 branch pipe 101.
  • the fixing portion 13 of the fixture 10 is fixed to the flange portion 101b of the branch pipe 101. Thereafter, the first shaft 21, the second shaft 22, and the third shaft 23 are moved downward in FIG. 7 toward the hole portion 102 by the first advance / retreat mechanism 31 of the fixture 10.
  • 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 branch 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 branch pipe 101.
  • the inner end portion 2 b of the sleeve 2 is disposed inside the main pipe 100.
  • the inner end 1b (FIG. 6) of the seal pipe 1 protruding inside the sleeve 2 is pressed by the sleeve 2 and protrudes outside the sleeve 2 (FIG. 7).
  • 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. 9, and the recess 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. 10, the inner end 2 b of the sleeve 2 is largely folded back so that the inner end 1 b of the seal pipe 1 is covered with the inner end 2 b 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. 10 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 securely attached to the branch 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. 11, 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 seal pipe 1 and the sleeve 2 fitted in the hole portion 102 the first shaft 21, the second shaft 22, and the third shaft 23 are retracted upward in FIG. 11, and the fixture 10 is moved to the branch pipe 101. To complete the installation of the branch structure.
  • 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 branch pipe is attached via the branch structure is not limited to the main pipe 100, 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 flange portion 1a of the seal pipe 1 can be pressed with the nut 3 according to the thickness of the main pipe 100 or the like, so that the connection portion between the main pipe 100 and the branch pipe 101 can be reliably sealed. Moreover, distortion of the flange part 1a can be prevented. Even when the one end portion 230 of the third shaft 23 is pulled out from the sleeve 2, the flange portion 1 a of the seal pipe 1 is not separated from the branch pipe 101, and the inner end portion 1 b of the seal pipe 1 is strongly against the main pipe 101. Not pressed.
  • the first shaft 21 includes the wrench portion 24, 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. it can.
  • 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 fixture 10 includes the fixed portion 13 and the rotating portion 410, the nut 3 can be rotated stably. Moreover, since the fixture 10 is provided with the switching part 14, rotation and a stop of the rotation part 410 can be controlled according to an attachment process.
  • 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.

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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 assure de manière fiable l'étanchéité d'un point de raccordement entre un corps et un tube de ramification. La présente invention comporte: un trou (102) pratiqué en un point de raccordement entre un corps (100) et un tube (101) de ramification; un tuyau (1) d'étanchéité qui est ajusté dans le trou (102) et qui est doté d'une bride (1a) qui est verrouillée avec le tube (101) de ramification; un manchon (2) qui est ajusté dans le tuyau (1) d'étanchéité et qui comprend une partie filetée (2a) qui fait face à la bride (1a) à l'intérieur du tube (101) de ramification; et un écrou (3) qui est assemblé par vissage à la partie filetée (2a): le tuyau (1) d'étanchéité présentant une extrémité intérieure (1b) qui dépasse vers l'intérieur du corps (100); le manchon (2) présentant une extrémité intérieure (2b) qui dépasse vers l'intérieur du corps (100); l'extrémité intérieure (2b) du manchon (2) étant rabattue le long de l'extrémité intérieure (1b) du tuyau (1) d'étanchéité de façon à amener l'extrémité intérieure (1b) du tuyau (1) d'étanchéité en contact rapproché avec le corps (100); et l'écrou (3) pressant la bride (1a) de façon à amener la bride (1a) en contact rapproché avec le tube (101) de ramification.
PCT/JP2017/009752 2017-03-10 2017-03-10 Structure de ramification, procédé de fixation d'une structure de ramification, et outil de fixation d'une structure de ramification WO2018163415A1 (fr)

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PCT/JP2017/009752 WO2018163415A1 (fr) 2017-03-10 2017-03-10 Structure de ramification, procédé de fixation d'une structure de ramification, et outil de fixation d'une structure de ramification
JP2019504276A JP6863624B2 (ja) 2017-03-10 2017-03-10 分岐構造、分岐構造の取付け方法及び分岐構造の取付け具

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PCT/JP2017/009752 WO2018163415A1 (fr) 2017-03-10 2017-03-10 Structure de ramification, procédé de fixation d'une structure de ramification, et outil de fixation d'une structure de ramification

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JP2020173024A (ja) * 2019-04-08 2020-10-22 ハーヴェー ハイドローリック エスイー 構成物ハウジングおよび接続ブロックを持つ油圧構成物

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EP0091702A1 (fr) * 1982-04-08 1983-10-19 REHAU AG + Co Tuyaux de branchement
JPH0626080A (ja) * 1992-07-07 1994-02-01 Kurimoto Ltd 分水栓、その取付方法及び装置
JP2004068921A (ja) * 2002-08-06 2004-03-04 Waterworks Technology Development Organization Co Ltd 流体管の分岐口防食構造及び分岐口防食方法
JP2006242323A (ja) * 2005-03-04 2006-09-14 Kurimoto Ltd 分水栓装置
KR20120008808A (ko) * 2010-07-20 2012-02-01 주식회사 국일인토트 분기관 연결구
KR20120031859A (ko) * 2010-09-27 2012-04-04 오정호 분기관 소켓 부착장치
CN102128330B (zh) * 2011-01-03 2012-06-20 王涵琳 用于薄壁孔上的管件连接体
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
JP2016125641A (ja) * 2015-01-08 2016-07-11 前澤化成工業株式会社 分岐継手

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020173024A (ja) * 2019-04-08 2020-10-22 ハーヴェー ハイドローリック エスイー 構成物ハウジングおよび接続ブロックを持つ油圧構成物
US11635163B2 (en) 2019-04-08 2023-04-25 Hawe Hydraulik Se Hydraulic component with a component housing and a connection block

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JPWO2018163415A1 (ja) 2020-01-16

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