WO1998011375A1 - Procede de raccordement de tuyaux et acier inoxydable approprie - Google Patents

Procede de raccordement de tuyaux et acier inoxydable approprie Download PDF

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Publication number
WO1998011375A1
WO1998011375A1 PCT/JP1996/002644 JP9602644W WO9811375A1 WO 1998011375 A1 WO1998011375 A1 WO 1998011375A1 JP 9602644 W JP9602644 W JP 9602644W WO 9811375 A1 WO9811375 A1 WO 9811375A1
Authority
WO
WIPO (PCT)
Prior art keywords
stainless steel
piping
bellows
pipe
steel pipe
Prior art date
Application number
PCT/JP1996/002644
Other languages
English (en)
Japanese (ja)
Inventor
Isamu Sasaki
Original Assignee
Isamu Sasaki
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 Isamu Sasaki filed Critical Isamu Sasaki
Priority to PCT/JP1996/002644 priority Critical patent/WO1998011375A1/fr
Publication of WO1998011375A1 publication Critical patent/WO1998011375A1/fr

Links

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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0231—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member with specially adapted means for positioning the threaded member behind the collar
    • 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
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal
    • F16L9/06—Corrugated pipes

Definitions

  • the present invention relates to a unit piping method excellent in durability, excellent in workability on site, and suitable for reducing costs, and a stainless steel pipe for piping.
  • the stainless steel pipe 1 has excellent corrosion resistance due to the properties of the stainless steel material, and since the bellows portion 2 has flexibility, it can be bent at the bellows portion 2 and can be piped. Since piping is not required, the piping operation can be simplified and the number of components can be reduced, and displacement can be absorbed in the bellows portion 2 after piping.
  • the present inventor pays attention to the advantage of the stainless steel pipe having such a bellows portion, and a unit piping method capable of forming a complicated piping path more easily, and a stainless steel pipe for the piping.
  • the subject is the provision of pipes.
  • FIG. 1 is an explanatory view showing one example of formation of a pipe passage according to the present invention
  • FIG. 2 is a plan view showing a stainless steel pipe for triangular pipes
  • FIG. 3 is a stainless steel for trapezoidal pipes
  • FIG. 4 is a plan view showing a stainless steel pipe for polygonal piping
  • FIG. 5 shows a preferred configuration example of a joint portion at one end side of a stainless sea bream pipe for piping.
  • FIG. 6 is an explanatory cross-sectional view showing the other end side of the stainless steel pipe for piping in FIG. 5
  • FIG. 7 is one end side of a stainless steel pipe for piping in FIG.
  • FIG. 8 is a cross-sectional view for illustrating a second configuration example in FIG.
  • FIG. 8 is a cross-sectional view for explanation showing a third configuration example on one end side of the stainless steel pipe for piping in FIG. 5, and FIG. 8 is a side view of the sleeve for greenery used in FIG. 10, and FIG. 10 is a stainless steel sleeve for piping in FIG.
  • FIG. 11 is a cross-sectional view for illustrating a fourth configuration example on one end side of a rope tube
  • FIG. 11 is an explanatory view showing storage and transportation of a stainless steel pipe for piping
  • FIG. 12 is a conventional sectional view for piping.
  • FIG. 3 is an explanatory view showing one example of a stainless steel pipe.
  • a stainless steel pipe 10a shown in FIG. 2 is used. That is, stainless steel pipe 10 a One bellows portion 11 is formed at the center of the stainless steel pipe 10a, and by bending the bellows portion 11, a triangular pipe passage is formed.
  • a stainless steel rope 10b shown in FIG. 3 is used. That is, the stainless steel pipe 10b has two bellows 11 and 11 formed at an appropriate interval in the middle of the stainless steel pipe 10b, and these bellows 11 and 11 are formed. By bending, a trapezoidal pipeline is formed.
  • the stainless steel pipe 10c has three bellows portions 11, 11, and 11 formed at an appropriate interval in an intermediate portion of the stainless steel rope 10c.
  • the bellows part 11 of the stainless steel rope 10c forming the polygonal pipe may be provided at three or more places.
  • each stainless steel pipe 10a, 10b and 10c if bellows 11 and 11 are added near the straight pipes 12 and 12 on both ends of each stainless steel pipe 10a, 10b and 10c, a triangular shape, The ends of each of the stainless steel ropes 10a, 10b, 10c formed as shapes and polygons are horizontally bent by bending the bellows parts 11, 1 near the straight pipe parts 12, 12.
  • the straight stainless steel pipes 10a, 10b, 10c to be combined with each other can be butt-connected to each other, and can be connected well.
  • the bellows 11 provided on the stainless steel ropes 10a, 10b, 10c is formed so that the bellows 11 is bent in a triangular, trapezoidal, or polygonal shape. Since the arrangement of 11 was made regular, each stainless steel pipe 10a, 1Ob, 10c was appropriately selected according to the situation at the piping site, and each selected stainless steel pipe 10 By bending and combining the bellows portions 11,-,-of a, 10 b, and 10 c at desired angles, a complicated piping path can be easily formed while avoiding obstacles of various shapes. It can be performed.
  • the bellows portion 11 can be bent not only in the two-dimensional direction but also in the three-dimensional direction, actually, a more complicated piping path than that shown in FIG. 1 can be easily formed.
  • the end of the stainless steel tube 10 at one end is formed as a straight tube portion 12. Therefore, this straight pipe section 12 is welded to the straight pipe section 12 of the stainless steel pipe 10 to be combined with, or connected to a joint such as a bag nut, cheese, elbow or the like of the other party.
  • the configuration is as follows.
  • the outer peripheral surface of the straight pipe portion 12 is made to have the same end faces so as to have an insulative property such as vinyl chloride, has a small friction coefficient, and can be slid on the one-side nibble 15 described later.
  • the sleeve 13 having the shape is permanently fixed.
  • the insulating sleeve 13 is integrally fixed to the straight pipe portion 12 by resin molding, and specifically, a plurality of strips formed in the direction 1) of the straight pipe portion 12). Are firmly and temporarily fixed to the outer periphery of the straight pipe portion 12 via the bulging portions 12a, 12a.
  • two annular grooves 13a and 13a are formed in the outer peripheral surface of the sleeve 13 to fit a pakkin 14 for preventing water leakage.
  • a small-diameter stepped portion 13b is formed at the rear of the tube 10 side.
  • the annular groove 13a should be provided on the inner peripheral surface of the one-side nibble 15 described later. May be ⁇
  • the joint fitted to this sleeve 13 has a single nipple 15 having a threaded portion 15b on the outer peripheral surface on one side of the central brim portion 15a and a smooth portion 15c on the other side. It is formed.
  • the screw portion 15b is screwed with a screw portion of a joint (not shown) such as a bag nut, cheese, and elbow.
  • the inner peripheral surface 17 of the central brim portion 15a and the smooth portion 15c of the one-side nipple 15 is formed to have a larger diameter than the inner peripheral surface 16 of the screw portion 15b, and the stainless steel pipe 10 A straight pipe portion 12 on one end side and a sleeve 13 fixed to the outer peripheral surface thereof are inserted. Further, the sleeve 13 and the one-side nibble 15 are slidable.
  • An annular groove 13 c is formed in the inner peripheral surface 17 on the smooth portion 15 c side of the one-sided nifrillet 15 facing the small-diameter stepped portion 13 b of the sleeve 13.
  • a C-shaped ring 18 having an urging force is inserted therein as a retaining member, and the protruding portion of the C-shaped ring 18 in the state of being fitted into the annular groove 13 c has a small diameter of the sleeve 13.
  • a steel wire having a panel constant made of phosphor bronze or stainless steel is used for the C-shaped ring 18.
  • the C-shaped ring 18 as a retaining member is a straight pipe 12 at one end of the stainless steel pipe 10 on the inner peripheral surface 17 of the one nipple 15 and a sleeve 1 fixed to the outer peripheral surface. With the 3 fitted, insert it while bending it into the annular opening that forms the gap between the inner peripheral surface 17 of the one-side nipple 15 and the sleeve 13. When it moves to the contact position, it expands due to the urging force and is fitted into the annular groove 13c.
  • Reference numeral 19 denotes a packing for improving watertightness.
  • the flexible sleeve 13 having an outer peripheral surface that can slide with the one nipple 15 is fixed to the outer periphery of the straight pipe portion 12 on one end side of the stainless steel rope 10,
  • the one-piece nibble 15 is configured so as to be prevented from falling off via the C-shaped ring 18 abutting on the small-diameter stepped portion 13 b of the sleeve 13, so that a bag nut, a chip, an elbow, etc.
  • the stainless steel pipe 10 can be freely rotated by 360 °, so that work can be reduced and efficiency can be improved. Further, unlike the conventional case, a nipple prepared as a separate part is not required, and the joint structure of the pipe end having a small number of parts can be achieved, thereby reducing the cost.
  • FIG. 6 is an explanatory sectional view showing the other end side of the pipe rest in FIG. 1, and the straight pipe portion 12 shown in this figure has a central portion 12 b formed in a polygonal cross section.
  • a green sleeve 20 made of a resin material is melted and fixed to the outer periphery of the straight pipe portion 12b.
  • the stainless steel pipe 10 has an insulating property. It is ensured to prevent electricity.
  • the insulating sleeve 20 may be attached to a desired pipe stop to be held by the fixing support.
  • irregularities 20 a and 20 b for preventing surface movement may be provided on the outer periphery of the insulating sleeve 20 in the longitudinal direction.
  • the force at which the pipe end of the joint part 21 is integrally connected to the pipe end of the straight pipe part 12 in FIG. 6 by the connecting part 22 is a joint as shown in FIG. It may be configured as a part.
  • FIG. 7 shows a second configuration example of the straight pipe portion 12 on one end side shown in FIG. 5. The end portion of the straight pipe portion 12 comes into contact with the end face of the sleeve 13 by pipe expansion processing.
  • a flare portion 12c is formed, and a packing 19 for preventing water leakage is interposed in a space formed by the flare portion 12c, the sleeve 13 and the straight pipe portion 12.
  • this prevents water leakage and improves water tightness.
  • the straight pipe portion 12 is bent and formed, and the bent straight pipe portion 12 is fixedly formed so as to be embedded in the sleeve 13, and the sleeve 13 is formed into the straight pipe portion 1. It may be tightly integrated with 2 to further enhance the watertightness.
  • FIG. 8 shows a third configuration example of the straight pipe portion 12 at one end shown in FIG. 5.
  • the straight pipe portion 12 at one end of the stainless steel rope 10 has a flared end. 23 are formed temporarily by welding.
  • Reference numeral 24 denotes a commonly used bag nut having a female thread 24a formed on an inner peripheral surface thereof and an inner peripheral groove 2 into which a fixing wire 25 which is a C-shaped ring is fitted. 4b is formed.
  • the inner diameter of the bag nut 24 is slightly larger than the diameter of the flare end 23, so that the bag nut 24 is not hindered by the flare end 23.
  • the part 23 is inserted into the straight pipe part 12 from the side thereof, and is freely mounted on the straight pipe part 12. Also, when the stop wire 25 is fitted into the inner circumferential groove 24 b formed on the inner circumferential surface of the bag nut 24, the stop wire 25 protruding from the inner circumferential groove 24 b becomes the flare end 2. It comes into contact with 3 to prevent the bag nut 24 from coming off.
  • Reference numeral 26 denotes an insulating sleeve. As shown in FIG. 9, the insulating sleeve 26 is provided at one end of the cylindrical portion 26a for covering the outer peripheral surface of the straight pipe portion 12 and one end of the cylindrical portion 26a. Is formed as a half-cut sleeve with a cut in the longitudinal direction.When the sleeve is fitted, it is forcibly forced out of the cut 26 c. Deploy and attach.
  • the green sleeve 26 is formed of polypropylene resin and is formed to withstand a load of 800 kg. A material with displacement may be used.
  • the outer periphery of the flange 26 b of the insulation sleeve 26 is formed to have a slightly larger diameter than the flare end 23, whereby the outer peripheral surface of the flare end 23 and the inside of the bag nut 24 are formed. The gap created between the ⁇ surface is sealed.
  • FIG. 10 shows a fourth configuration example of the straight pipe section 12 on one end side shown in FIG. 5, in which a flare part 12 a is added to the straight pipe section 12 of the stainless steel pipe 10.
  • An insulating sleeve 31 having a step is fitted on the depth side of this part of the frame 12a, and an insulative sealing packing 32 is mounted on the tip side of the part of the frame 12a.
  • the bag nut 30 containing the insulating sleeve 31, the flare part 1 a, and the green sealing packing 32 is locked by the base of the insulating sleeve 31, and the base is locked.
  • the bag nut 30 is screwed with a screw portion on one side of a nibble 33 connected to a joint (not shown).
  • the nipple 33 is insulated from the stainless steel pipe 10 and water is leaked through the insulating sealing packing 32, and the bag nut 30 is stuck through the insulating sleeve 31. Insulation between the tube 10 is achieved.
  • Fig. 11 shows the good storage and transportation of the stainless steel tube 10.
  • the bellows 11 is bent while shifting the angle to make the stainless steel tube 10 into a wound state. ⁇ Store and transport tube 10.
  • Stainless steel pipes are prepared so that stainless steel pipes that can be formed in each shape are selected as appropriate according to the situation at the piping site.
  • by bending and combining the bellows portions at a desired angle it is possible to easily form a complicatedly bent pipe path while avoiding obstacles of various shapes, even if they are present.
  • the bellows portions in the vicinity of the straight pipe portions at both ends of each stainless steel pipe are bent to make the straight pipe portions at both ends of the stainless steel pipe horizontal.
  • the connection between the combined stainless steel pipes can be made well.
  • a single nipple is rotatably attached to the joint portion of the stainless steel tube without using a bag nut at the joint portion of the stainless steel tube, through an insulating sleeve.
  • the bellows portion of the stainless steel pipe is bent and stored while being wound while shifting the angle, so that the long stainless steel pipe for piping is shortened. It can be stored and transported at the same time, improving the handling efficiency such as space efficiency and carrying-in / on-site workability.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

Un tuyau en acier inoxydable (10) comporte trois types de tuyaux en acier inoxydable (10a, 10b, 10c), dans lesquels des parties à soufflets (11) sont coudées pour créer respectivement une forme triangulaire, une forme trapézoïdale et une forme polygonale, les tuyaux en acier inoxydable (10a, 10b, 10c) étant sélectionnés de façon à répondre aux exigences du site de raccordement, et combinés aux parties à soufflets coudées selon des angles souhaités pour former de façon simple différentes configurations de trajets de tuyaux. Une gaine isolante (13) est assujettie à une partie de tuyau rectiligne (12) à une extrémité du tuyau en acier inoxydable (10) par l'intermédiaire d'une partie moulée en résine. Cette gaine isolante (13) comporte une surface périphérique présentant un faible coefficient de frottement permettant un ajustement par glissement. Un mamelon simple (15) ou un écrou borgne (24) est monté de façon rotative sur la circonférence extérieure de la gaine (13), et un élément est prévu pour empêcher le retrait de la gaine.
PCT/JP1996/002644 1996-09-13 1996-09-13 Procede de raccordement de tuyaux et acier inoxydable approprie WO1998011375A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1996/002644 WO1998011375A1 (fr) 1996-09-13 1996-09-13 Procede de raccordement de tuyaux et acier inoxydable approprie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1996/002644 WO1998011375A1 (fr) 1996-09-13 1996-09-13 Procede de raccordement de tuyaux et acier inoxydable approprie

Publications (1)

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WO1998011375A1 true WO1998011375A1 (fr) 1998-03-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2382792A (en) * 2001-07-26 2003-06-11 Lear Corp Headrest support rod with sleeves.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56140734U (fr) * 1980-03-26 1981-10-24
JPS59183576U (ja) * 1983-05-24 1984-12-06 作田　シン 配管用波形管
JPS59226791A (ja) * 1983-06-03 1984-12-19 日本金属工業株式会社 ステンレス鋼管用継手
JPH0320535A (ja) * 1989-06-15 1991-01-29 Hitachi Cable Ltd 部分可撓性配管材
JPH0651669U (ja) * 1992-12-24 1994-07-15 トーフレ株式会社 フレキシブルチューブ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56140734U (fr) * 1980-03-26 1981-10-24
JPS59183576U (ja) * 1983-05-24 1984-12-06 作田　シン 配管用波形管
JPS59226791A (ja) * 1983-06-03 1984-12-19 日本金属工業株式会社 ステンレス鋼管用継手
JPH0320535A (ja) * 1989-06-15 1991-01-29 Hitachi Cable Ltd 部分可撓性配管材
JPH0651669U (ja) * 1992-12-24 1994-07-15 トーフレ株式会社 フレキシブルチューブ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2382792A (en) * 2001-07-26 2003-06-11 Lear Corp Headrest support rod with sleeves.
US6631956B2 (en) 2001-07-26 2003-10-14 Lear Corporation Headrest support rod with plastic sleeves
GB2382792B (en) * 2001-07-26 2004-12-22 Lear Corp Headrest support rod with plastic sleeves

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