GB1428301A - Method and apparatus for reovating old pipes - Google Patents

Method and apparatus for reovating old pipes

Info

Publication number
GB1428301A
GB1428301A GB244974A GB244974A GB1428301A GB 1428301 A GB1428301 A GB 1428301A GB 244974 A GB244974 A GB 244974A GB 244974 A GB244974 A GB 244974A GB 1428301 A GB1428301 A GB 1428301A
Authority
GB
United Kingdom
Prior art keywords
pipe
pipes
water
new
conduits
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.)
Expired
Application number
GB244974A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Engie SA
Original Assignee
Gaz de France SA
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 Gaz de France SA filed Critical Gaz de France SA
Publication of GB1428301A publication Critical patent/GB1428301A/en
Expired legal-status Critical Current

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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1652—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section

Abstract

1428301 Repairing pipes GAZ DE FRANCE 18 Jan 1974 [22 Jan 1973] 02449/74 Heading F2P Repair of a leaking &c. old pipe 1 is effected by inserting a new, flexible pipe 2 of slightly smaller diameter, connecting pressure chambers S, S<SP>1</SP> to each end of the new pipe, and conduits, valves &c. 12, 14, 16, R 1 ... R 8 via ports 0<SP>1</SP> ... 0<SP>1</SP> 3 to feed fluid under pressure, e.g. water, both to the inside of the new pipe and to the annular space between the inner new and outer old pipes, thus allowing the pressure inside and outside the new pipe 2 to be equalized before a lining substance, e.g. a cement based mortar, is introduced between the inner and outer pipes. Introduction of the lining substance forces out the water &c. from between the inner and outer pipes. Following insertion of the pipe 2, the space between the pipes is closed by seal rings 7, 8, and the pressure chambers S, S<SP>1</SP> are secured by connectors 3, 4 to the ends of the inner pipe. Holes O 1 , O<SP>1</SP> 1 , are provided through the old pipe 1 for connection to conduits &c. 16, 14, respectively. Water &c. under pressure is introduced through a conduit 12 and a port O 3 to the pressure chamber S, &c. Depending on which end of the combined pipes is higher, the water in the inner pipe is then either admitted through conduits, valves &c. 11<SP>1</SP>, 14, 10<SP>1</SP> or conduits, valves &c. 11, 16, 10 to the space between the outer and inner pipes 1, 2. Alternatively, water &c. is admitted simultaneously to both the inside of the inner pipe 2 and the pipe around it The pressures between the pipes 1, 2 and inside the pipe 2 are then balanced through the holes &c. 0 1 , 0 2 ; 0<SP>1</SP> 1 , 0<SP>1</SP> 2 , and vent valves R 5 , R 6 are briefly opened. A pressure control valve S 0 is opened, and a lining substance pumped into the space between the inner and outer pipes 1, 2 through a connection 16a. An expansion tank 17 is connected between the holes &c. 0 1 , 0 2 .
GB244974A 1973-01-22 1974-01-18 Method and apparatus for reovating old pipes Expired GB1428301A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7302170A FR2221684B1 (en) 1973-01-22 1973-01-22

Publications (1)

Publication Number Publication Date
GB1428301A true GB1428301A (en) 1976-03-17

Family

ID=9113649

Family Applications (1)

Application Number Title Priority Date Filing Date
GB244974A Expired GB1428301A (en) 1973-01-22 1974-01-18 Method and apparatus for reovating old pipes

Country Status (8)

Country Link
BE (1) BE809948A (en)
DE (1) DE2403044A1 (en)
DK (1) DK132469C (en)
FR (1) FR2221684B1 (en)
GB (1) GB1428301A (en)
IT (1) IT1008719B (en)
LU (1) LU69216A1 (en)
NL (1) NL7400880A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123919A (en) * 1982-07-16 1984-02-08 Vick Limited Steve Sealing within pipes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4678370A (en) * 1984-12-04 1987-07-07 Danby Pty. Ltd. Sewer renovation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123919A (en) * 1982-07-16 1984-02-08 Vick Limited Steve Sealing within pipes

Also Published As

Publication number Publication date
NL7400880A (en) 1974-07-24
FR2221684A1 (en) 1974-10-11
DK132469B (en) 1975-12-08
DE2403044A1 (en) 1974-07-25
LU69216A1 (en) 1974-04-08
BE809948A (en) 1974-05-16
FR2221684B1 (en) 1977-01-07
DK132469C (en) 1976-05-10
IT1008719B (en) 1976-11-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee