WO1981001184A1 - Compensateurs axiaux pour pipelines - Google Patents

Compensateurs axiaux pour pipelines Download PDF

Info

Publication number
WO1981001184A1
WO1981001184A1 PCT/GB1980/000165 GB8000165W WO8101184A1 WO 1981001184 A1 WO1981001184 A1 WO 1981001184A1 GB 8000165 W GB8000165 W GB 8000165W WO 8101184 A1 WO8101184 A1 WO 8101184A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
expansion element
skid
guide pipe
pipes
Prior art date
Application number
PCT/GB1980/000165
Other languages
English (en)
Inventor
R Leif
P Leif
Original Assignee
United Gas Industries Ltd
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 United Gas Industries Ltd filed Critical United Gas Industries Ltd
Publication of WO1981001184A1 publication Critical patent/WO1981001184A1/fr
Priority to FI813630A priority Critical patent/FI813630L/fi

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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
    • F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
    • F16L59/21—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for expansion-compensation devices

Definitions

  • This invention relates to axial compensators for pipe lines and insulation therefor.
  • the invention provides a prefabricated insulated expansion element combined with an axial compensator having pipe ends directed in opposite directions and intended to be mounted in a culvert, characterized in that the expansion element comprises a pair of skid pipes, each arranged surrounding a pipe end and spaced therefrom, the spaces being filled with a flexible heat insulation material, the said skid pipes each being slidable in a common guide pipe, which surrounds the axial compensator and is spaced therefrom, each end of the guide pipe having a seal sliding on the skid pipe so that the said skid pipes are movable relative to the guide pipe, a protective pipe secured around the guide pipe and spaced therefrom, the space being filled with a heat insulation material.
  • the prefabricated expansion elerrent is assembled on the axial compensator before they are mounted together in the pipe line, so avoiding the site work referred to above.
  • Figure 1 is a longitudinal section of an expansion element and a side view (partly cut away) of an axial compensator in the expansion element
  • Figure 2 is a longitudinal section through the right-hand portion of the expansion element of a modified design
  • Figure 3 is a side view of the expansion element and of a prestressing means engaging therewith.
  • the expansion element shown in Figure 1 comprises a pair of skid pipes
  • skid pipes (1) and (2) having a central axis in common and arranged in spaced apart relationship.
  • the remote ends of the skid pipes each have an end wall (3) and (4). Their ends facing each other are open and project into a guide pipe (5) which has sealing rings (6) and (7) and scraping edges (5') and (5") located around the respective skid pipe (1, 2) and sliding thereon.
  • a protective pipe (8) is attached rigidly to the guide pipe, so that a closed intermediate space (9) is formed around the guide pipe over a substantial part of its length.
  • the items (1 - 5) and (8) preferably are made of a stable plastics material.
  • the guide pipe (5) extends round an axial compensator (10) spaced therefrom, and the skid pipes (1, 2) each surround a pipe end (13, 14) in spaced relationship thereto leaving spaces (11, 12) communicating wit the space inside the guide pipe.
  • the pipe ends extend through central openings (15) and (16) in end walls (3, 4) of the skid pipes.
  • the diameter of the said openings is equal to the outer diameter of the pipe ends (13, 14).
  • Flexible seals (17) and (18) are attached adjacent the outside of the openings (15, 16) and about the pipe ends.
  • the axial compensator (10) preferably is of the type described in U.K. Patent No. 1,531,792, which as appears from Figure 1 comprises two pipe connecting pieces (13' , 14') which are axially movable relative each other, their remote ends being connected to the pipe ends (13, 14).
  • the ends of said connecting pieces facing toward each other are connected by means of a bellows (19), the ends of which are sealingly attached to the connecting pieces (13' , 14').
  • the bellows (19) and the adjacent ends of the connecting pieces are surrounded by a guide sleeve (20) which is spaced from the guide pipe (5) to leave the space continuous with spaces (11, 12).
  • the axial compensator (10) is provided with a stroke limiter (21), which prevents undesired change in length of the bellows (19), as described in U.K. Patent No. 1,531,792.
  • the intermediate spaces (11, 12) and the communicating space at least up to the guide sleeve (20), are filled with flexible or compressible heat insulation material, for example mineral wool, and the intermediate space (9) also is filled with heat insulation material, which need not be flexible or compressible.
  • a prestressing means is provided, which according to Figure 3 consists of two pipe clamp (22, 23) detachably attached on the pipe ends (13, 14). Two rods (24, 25) are attached to extend between the pipe clamps (22, 23).
  • each rod is welded to the pipe clamp (22) while the other end is threaded and extends through a hole in the second pipe clamp (23) and supports a pair of lock nuts (26).
  • the distance apart of the rods exceeds slightly the outer diameter of the protective pipe (8), and the length of the rods is slightly greater than the distance between the outer ends of the skid pipes (1, 2) so that they are located outside the expansion element as shown in Figure 3.
  • the axial compensator (10) When the axial compensator (10) is to be mounted in the expansion element, the axial compensator (10) first is prestressed in known manner, which state is maintained by means of a fixture or the like engaging with the pipe ends (13, 14) so that the axial compensator is held prestressed, and extended. Its total length will then decrease when the axial compensator is subjected to compressing pressure due to an increase in temperature of the conduit in which it is situated. Thereafter the expansion element is secured around the axial compensator. The prestressing means (22 - 26) is attached to the pipe ends (13, 14) to replace the fixture, which is then removed, the prestressing means maintaining the pipe ends (13, 14) in their positions set relative to each other.
  • the prestressing means (22 - 26) can alternatively be replaced by four pipe clamps (28 - 31 ) as indicated by dash-dotted lines in Figure 3. Two of the clamps (28, 29) are attached to the pipe ends (13, 14) and rest against the ends of the skid pipes (1, 2) while the other two of the clamps (30, 31) are attached to the skid pipes (1, 2) and rest against the ends of the guide pipe (5) , whereby the pipe ends (13, 14) are held prestressed by the guide pipe and skid ' pipes instead of by the aforesaid rods (24, 25).
  • the prefabricated expansion element thus, .is provided with the prestressing means when the element is delivered to the place of installation.
  • the expansion element thereafter is mounted, with the prestressing means remaining thereon, in a culvert, the pipe ends (13, 14) are connected by welding to the opposed pipe ends of a conduit in the culvert, whereafter the prestressing means is removed and the skid pipes (1, 2) are connected to the protective pipe of the culvert ⁇ preferably by means of a plastic sleeve (27) as indicated by dash-dotted lines in Figure 1, with insulation material inside the plastic sleeve.
  • Figure 2 shows a modification, in which the ends of the guide pipe (5), of which only one end is shown, are provided with an additional seal (32) and scraping edge (33) thereon in order to improve the resistance to the penetration of water or other particles into the skid pipes.
  • the central portion of the guide pipe in this case is formed by a sheet metal pipe secured by welding, as shown in Figure 2.
  • the guide pipe for example, and the walls of the protective pipe connected thereto, may have another longitudinal section shape.

Landscapes

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

Abstract

Un element de dilatation pour l'isolation d'un compensateur axial (10) comprend une paire de tuyaux coulissants (1, 2) attaches de maniere espacee (11, 12) autour des extremites (13, 14) du compensateur. Chaque tuyau coulissant (1, 2) peut coulisser dans une extremite d'un tuyau de guidage (5) qui est entoure sur une bonne partie de sa longueur d'un tuyau de protection (8). Tous les espaces (9, 11, 12) entre les tuyaux coulissants (1, 2) et les extremites de tuyaux (13, 14) et entre le tuyau de protection (8) et le tuyau de guidage (5) sont remplis d'un materiau d'isolation thermique. Grace a la capacite des tuyaux (1, 2) de coulisser dans le tuyau de guidage (5), l'element de dilatation suit les changements de longueur du compensateur (10) en reponse aux variations de temperature. L'element de dilatation s'adapte sur le compensateur axial (10) avant que ces deux organes ne soient montes tous dans un pipeline.
PCT/GB1980/000165 1979-10-17 1980-10-15 Compensateurs axiaux pour pipelines WO1981001184A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI813630A FI813630L (fi) 1979-10-17 1981-11-16 Axialkompensator foer roerledningar

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7908587A SE438022B (sv) 1979-10-17 1979-10-17 Prefabricerat expansionselement i kombination med axialkompensator for inmontering i en kulvert
SE7908587 1979-10-17

Publications (1)

Publication Number Publication Date
WO1981001184A1 true WO1981001184A1 (fr) 1981-04-30

Family

ID=20339075

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1980/000165 WO1981001184A1 (fr) 1979-10-17 1980-10-15 Compensateurs axiaux pour pipelines

Country Status (3)

Country Link
EP (1) EP0047242A1 (fr)
SE (1) SE438022B (fr)
WO (1) WO1981001184A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146305A1 (de) * 1981-11-23 1983-05-26 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Faltenbalgkompensator mit innenisolierung
EP0229345A2 (fr) * 1986-01-02 1987-07-22 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Dispositif de connexion élastique de deux tuyaux à paroi double
KR101059345B1 (ko) 2009-04-22 2011-08-24 차세완 이중 벽체용 이중 신축 관체
CN105257941A (zh) * 2015-10-30 2016-01-20 任丘市华北石油科林环保有限公司 一种工业化生产固体微球催化剂用的管道间连接的膨胀节装置
CN105465531A (zh) * 2015-12-07 2016-04-06 南京晨光东螺波纹管有限公司 一种用于燃机系统复式带预压机构膨胀节
CN105465555A (zh) * 2015-12-15 2016-04-06 中投（天津）热能装备发展有限公司 补偿器保温装置套筒
CN105927812A (zh) * 2016-06-21 2016-09-07 廊坊华宇天创能源设备有限公司 一种防水密封预制直埋补偿器保温产品及其预制方法
CN109563960A (zh) * 2016-07-29 2019-04-02 古河电气工业株式会社 输送管

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU171397U1 (ru) * 2016-09-28 2017-05-30 Закрытое акционерное общество "СМИТ-ГРУПП" Компенсационное устройство изолированного трубопровода

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732227A (en) * 1956-01-24 Welded enclosure for expansion joint
US2894538A (en) * 1955-08-29 1959-07-14 Temploc Inc Composite fabrication pipe
US3250297A (en) * 1963-10-10 1966-05-10 Durant Insulated Pipe Co Inc Conduit system
DE2241655A1 (de) * 1971-08-27 1973-03-15 Graenges Hedlund Ab Rohr zum transport von heissen, fluessigen medien und verfahren zu dessen herstellung
FR2238390A7 (en) * 1973-07-20 1975-02-14 Karlsruhe Augsburg Iweka Mounted unit for pipe expansion compensators - pipes are mounted in resilient clamps allowing axial movement
FR2301761A1 (fr) * 1975-02-24 1976-09-17 Technigaz Conduite pour le transport d'un fluide dont la temperature est differente de la temperature ambiante
FR2361597A1 (fr) * 1976-06-14 1978-03-10 Frantisek Sigmund Perfectionnements apportes aux canalisations calorifugees

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732227A (en) * 1956-01-24 Welded enclosure for expansion joint
US2894538A (en) * 1955-08-29 1959-07-14 Temploc Inc Composite fabrication pipe
US3250297A (en) * 1963-10-10 1966-05-10 Durant Insulated Pipe Co Inc Conduit system
DE2241655A1 (de) * 1971-08-27 1973-03-15 Graenges Hedlund Ab Rohr zum transport von heissen, fluessigen medien und verfahren zu dessen herstellung
FR2238390A7 (en) * 1973-07-20 1975-02-14 Karlsruhe Augsburg Iweka Mounted unit for pipe expansion compensators - pipes are mounted in resilient clamps allowing axial movement
FR2301761A1 (fr) * 1975-02-24 1976-09-17 Technigaz Conduite pour le transport d'un fluide dont la temperature est differente de la temperature ambiante
FR2361597A1 (fr) * 1976-06-14 1978-03-10 Frantisek Sigmund Perfectionnements apportes aux canalisations calorifugees

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146305A1 (de) * 1981-11-23 1983-05-26 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Faltenbalgkompensator mit innenisolierung
EP0229345A2 (fr) * 1986-01-02 1987-07-22 Witzenmann GmbH Metallschlauch-Fabrik Pforzheim Dispositif de connexion élastique de deux tuyaux à paroi double
EP0229345A3 (en) * 1986-01-02 1987-10-21 Witzenmann Gmbh Metallschlauch-Fabrik Pforzheim Device for elastic connection of two double-walled pipes
KR101059345B1 (ko) 2009-04-22 2011-08-24 차세완 이중 벽체용 이중 신축 관체
CN105257941A (zh) * 2015-10-30 2016-01-20 任丘市华北石油科林环保有限公司 一种工业化生产固体微球催化剂用的管道间连接的膨胀节装置
CN105465531A (zh) * 2015-12-07 2016-04-06 南京晨光东螺波纹管有限公司 一种用于燃机系统复式带预压机构膨胀节
CN105465555A (zh) * 2015-12-15 2016-04-06 中投（天津）热能装备发展有限公司 补偿器保温装置套筒
CN105927812A (zh) * 2016-06-21 2016-09-07 廊坊华宇天创能源设备有限公司 一种防水密封预制直埋补偿器保温产品及其预制方法
CN109563960A (zh) * 2016-07-29 2019-04-02 古河电气工业株式会社 输送管
CN109563960B (zh) * 2016-07-29 2021-08-10 古河电气工业株式会社 输送管

Also Published As

Publication number Publication date
EP0047242A1 (fr) 1982-03-17
SE438022B (sv) 1985-03-25
SE7908587L (sv) 1981-04-18

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