EP0047242A1 - Axial compensators for pipe lines - Google Patents
Axial compensators for pipe linesInfo
- Publication number
- EP0047242A1 EP0047242A1 EP80901946A EP80901946A EP0047242A1 EP 0047242 A1 EP0047242 A1 EP 0047242A1 EP 80901946 A EP80901946 A EP 80901946A EP 80901946 A EP80901946 A EP 80901946A EP 0047242 A1 EP0047242 A1 EP 0047242A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- expansion element
- guide pipe
- skid
- pipes
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
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).
- 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 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.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7908587 | 1979-10-17 | ||
SE7908587A SE438022B (sv) | 1979-10-17 | 1979-10-17 | Prefabricerat expansionselement i kombination med axialkompensator for inmontering i en kulvert |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0047242A1 true EP0047242A1 (en) | 1982-03-17 |
Family
ID=20339075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80901946A Withdrawn EP0047242A1 (en) | 1979-10-17 | 1980-10-15 | Axial compensators for pipe lines |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0047242A1 (sv) |
SE (1) | SE438022B (sv) |
WO (1) | WO1981001184A1 (sv) |
Cited By (1)
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 |
Families Citing this family (8)
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 |
DE3600028C1 (de) * | 1986-01-02 | 1987-01-08 | Witzenmann Metallschlauchfab | Vorrichtung zum elastischen Verbinden zweier Mantelrohrleitungen |
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 |
CN105465531B (zh) * | 2015-12-07 | 2017-10-27 | 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 |
CN105927812B (zh) * | 2016-06-21 | 2018-02-27 | 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 |
JPWO2018021509A1 (ja) * | 2016-07-29 | 2019-05-23 | 古河電気工業株式会社 | 輸送管 |
Family Cites Families (7)
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 |
SE362463B (sv) * | 1971-08-27 | 1973-12-10 | Graenges Hedlund Ab | |
CH577657A5 (sv) * | 1973-07-20 | 1976-07-15 | Karlsruhe Augsburg Iweka | |
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 |
GB1579125A (en) * | 1976-06-14 | 1980-11-12 | Sigmund F | Heat-insulated pipe-lines |
-
1979
- 1979-10-17 SE SE7908587A patent/SE438022B/sv unknown
-
1980
- 1980-10-15 EP EP80901946A patent/EP0047242A1/en not_active Withdrawn
- 1980-10-15 WO PCT/GB1980/000165 patent/WO1981001184A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO8101184A1 * |
Cited By (1)
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 |
Also Published As
Publication number | Publication date |
---|---|
SE7908587L (sv) | 1981-04-18 |
WO1981001184A1 (en) | 1981-04-30 |
SE438022B (sv) | 1985-03-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT CH FR NL |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: UNITED GAS INDUSTRIES LIMITED |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19820610 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LEIF, RUNDGREN Inventor name: LEIF, PERSSON |