EP0076283B1 - Improvements in and relating to the lining of sewers, pipes, or the like - Google Patents

Improvements in and relating to the lining of sewers, pipes, or the like Download PDF

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Publication number
EP0076283B1
EP0076283B1 EP82900980A EP82900980A EP0076283B1 EP 0076283 B1 EP0076283 B1 EP 0076283B1 EP 82900980 A EP82900980 A EP 82900980A EP 82900980 A EP82900980 A EP 82900980A EP 0076283 B1 EP0076283 B1 EP 0076283B1
Authority
EP
European Patent Office
Prior art keywords
mounting
axis
sewer
pipe
bore
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
EP82900980A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0076283A1 (en
Inventor
Stephen Tracey
Stanley Robert Moore
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT82900980T priority Critical patent/ATE24025T1/de
Publication of EP0076283A1 publication Critical patent/EP0076283A1/en
Application granted granted Critical
Publication of EP0076283B1 publication Critical patent/EP0076283B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing

Definitions

  • This invention concerns improvements in and relating to the lining of sewers, pipes, or the like, and in particular the removal of obstructions from within the sewer or pipe by remote controlled means.
  • a known method of reconditioning existing sewers or pipelines that have become subject to leakage consists in drawing into the sewer or pipeline a liner of synthetic plastics material, which liner has to be inflated or pulled through the existing sewer as a unit.
  • Such liners may, for example, be made of rigid PVC or like material.
  • a drawback of this lining method is that before such a liner can be inserted into the sewer or pipeline, all obstructions projecting from the wall of the original sewer or pipeline must be removed to allow passage of the inserted liner, and after the lining has subsequently been inserted, it is necessary to complete the further operation of cutting appropriate apertures in the lining at the point where any lateral connections are intended to communicate with the main bore of the sewer.
  • the hitherto known devices typically comprise a guide means for location within a bore of the sewer or pipe system, a mounting arranged for rotary movement relatively to the guide means about an axis intended, in use, to coincide substantially with the central longitudinal axis of the bore of the sewer or pipe from which an obstruction is to be removed, a union for receiving a water supply hose and coupled to said mounting by conduit means permitting said pivotal movement, and a jet nozzle carried by said mounting, coupled to said conduit means and arranged with its axis spaced from and approximately parallel to the rotary axis of said mounting, whereby, in use, a high pressure water jet can be directed from said jet nozzle adjacent the wall of the sewer or pipe with respect to the longitudinal axis of which the axis of rotation of the said mounting is arranged substantially to coincide.
  • a device of the construction previously referred to is characterised in that said mounting is in turn mounted upon a further mounting arranged for rotary movement with respect to said guide means about an axis substantially coinciding with the longitudinal axis of a bore within which said guide means is to be located, that the rotary axis of said first mounting is substantially at right angles to the rotary axis of said second mounting and that said device is provided with remotely controllable driving means for rotation of said mountings about their respective axes, whereby, in use, the jet nozzle can be caused to execute a rotary motion in alignment with the axis of a branch pipe communicating with a main pipe within which said guide means is located.
  • the invention further provides a method of removing by remote control an obstruction from a secondary bore or branch pipe of a sewer or pipe system, characterised in that it comprises drawing into a main bore of the system a device in accordance with the invention, until the axis of rotation of said first mounting lies substantially in a plane coinciding with the longitudinal axis of said branch pipe, rotating said second mounting until the axis of rotation of said first mounting is directed approximately axially along the said secondary bore, and supplying pressurised water to said device whilst rotating said first mounting whereby the obstruction is cut away adjacent the internal periphery of said sewer or pipe by the resulting water jet.
  • the ease with which the projection to be removed may be cut by means of a water jet will depend to a large extent upon the pressure at which water is supplied to form the jet, and the distance by which the orifice of the jet nozzle is spaced from the obstruction to be cut.
  • the water pressure should therefore preferably be within a range of 70 to 750 kilograms per cm 2 , and the jet nozzle located at a distance of between 1 and 15 cm from the obstruction to be removed.
  • a water pressure of from 225 and 300 kilograms per CM 2 will be suitable when the nozzle is located from 1 to 2.5 cm from the obstruction.
  • Water pressures and distances for specific materials to be cut are set out in Table 1 below.
  • a water jetting device in accordance with the invention which comprises a sled or skid assembly indicated generally at 1, said assembly being arranged to fit within a given diameter of sewer pipe and to locate the body of the water jetting device on the central axis of the pipe.
  • the skid assembly is provided with front and rear towing hooks 2, 3, by means of which the device may be drawn along a sewer pipe as described in more detail below.
  • the water jetting device comprises a rotary head 6 comprising two diametrically opposed jet nozzles 7 which extend outwardly at a small angle to the central rotary access of the head 6.
  • the head 6 is rotatable about its central axis by means of a pneumatic motor, not shown, located within a body 5 of the device, the water supply conduit from the body of the device 5 to the head 6 being sealed by appropriate seals allowing rotation of the head 6.
  • a union 8 for connection of a high pressure water supply hose.
  • the body 5 of the water jetting device is also provided with an additional control motor, not shown, arranged for the rotation of the body 5 about the axis of mountings 25 connecting it to the sled 1.
  • Means for the attachment of air supply and return hoses for the remote control of the internal motors are indicated diagrammatically at 9.
  • the water jetting head of the device illustrated is utilised for the cutting of transverse apertures in a lining inserted within a sewer pipe, for which purpose the axis of the water jetting device extends radially to the sewer pipe 20.
  • the water jets from nozzles 7 are utilised to cut an aperture within an internal liner 21 which has been located within the sewer pipe after removal of internal projections.
  • the location of the jet nozzles 7 accurately in alignment with a branch pipe 22 is effected with the aid of a radioactive isotope pack 23 which is located within the branch pipe, and the radiation from which is picked up by a Geiger counter device indicated diagrammatically at 24.
  • the longitudinal position of the sled 1 and the rotary position of the body 5 are adjusted until a maximum reading is obtained on the Geiger counter 24, whereupon the rotary head 6 carrying the nozzles 7 will be centred accurately in alignment with the axis of the branch pipe 22.
  • Cutting of the aperture in the lining 21 may then be effected by turning on the high pressure water supply to the jet nozzles 7 and rotating the head 6 by means of the internal motor within the body 5.
  • FIG. 2 shows the general arrangement of a device in accordance with the invention in use within a sewer pipe 30, to which access has been gained through manholes, or the like 31.
  • a system of drag lines is set up through the sewer pipe 30 utilising winches 32 and pulleys 33, in known manner, the drag lines being connected to the front and rear towing eyes of the sled 1 to enable this to be winched along the sewer pipe 30.
  • a water jet unit of known type is utilised, the device carrying a closed circuit television camera and all hoses and control connections being fed to the device through an appropriate manhole 31 from a mobile control and service unit 34 from which the operation of the device is remotely controlled.
  • the water jetting unit After removal of the internal obstructions, the water jetting unit is removed, the lining is inserted in known manner, and then lateral access apertures to the lining are cut in the manner already described above with reference to Fig. 1.
  • the jet nozzle head 6 may be provided with only a single jet nozzle 7, and an extension adaptor may be provided for attachment to the single jet nozzle 7 in order to change the direction of the nozzle axis from being substantially radial to the sewer pipe 20 to being substantially axial thereto, in the manner of the known device initially referred to.
  • Such a modification allows the device of Figure 1 to be utilised both for cutting the initial projections from the main bore of the sewer pipe 20 prior to insertion of the lining, and for the subsequent cutting of apertures to branch pipes, after the lining has been inserted. It will be appreciated that such a modification enables the requirement for two separate water jetting devices for carrying out the respective cutting operations to be dispensed with.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Sewage (AREA)
EP82900980A 1981-04-08 1982-04-08 Improvements in and relating to the lining of sewers, pipes, or the like Expired EP0076283B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82900980T ATE24025T1 (de) 1981-04-08 1982-04-08 Verbesserungen bezueglich der auskleidung von abwasserkanaelen, rohren und dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8111053A GB2098300B (en) 1981-04-08 1981-04-08 Improvements in and relating to the lining of sewers pipes or the like
GB8111053 1981-04-08

Publications (2)

Publication Number Publication Date
EP0076283A1 EP0076283A1 (en) 1983-04-13
EP0076283B1 true EP0076283B1 (en) 1986-12-03

Family

ID=10521020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82900980A Expired EP0076283B1 (en) 1981-04-08 1982-04-08 Improvements in and relating to the lining of sewers, pipes, or the like

Country Status (8)

Country Link
EP (1) EP0076283B1 (pt)
JP (1) JPS58500619A (pt)
BR (1) BR8207578A (pt)
DE (1) DE3274567D1 (pt)
GB (1) GB2098300B (pt)
NZ (1) NZ200262A (pt)
WO (1) WO1982003417A1 (pt)
ZA (1) ZA822424B (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3237583C2 (de) * 1982-10-09 1992-12-10 Udo Th. 4740 Oelde Thüner Spülkopf
GB8331914D0 (en) * 1983-11-30 1984-01-04 Atomic Energy Authority Uk Inspection of buried pipelines
JPS60176250A (ja) * 1984-02-23 1985-09-10 Toshiba Corp 半導体装置の製造方法
DE3614046A1 (de) * 1985-05-09 1986-11-20 EAB Electronic-Apparate-Bau GmbH, 8984 Riezlern Vorrichtung zum reinigen von verlegten rohren
US4982490A (en) * 1986-07-11 1991-01-08 Stephen Tracey Method of lining a fluid conduit
AU615717B2 (en) * 1988-01-27 1991-10-10 Sekisui Kagaku Kogyo Kabushiki Kaisha Method of drilling a branch line aperture after internal lining of a pipeline and a water plug used in the method
AT406937B (de) * 1993-12-03 2000-10-25 Hilbrand Martin Ing Einrichtung, insbesondere für kanalarbeiten
CH686410A5 (de) * 1994-03-17 1996-03-29 Iws Ag Vorrichtung zur Reinigung von Lueftungskanaelen.
US20090223335A1 (en) * 2008-03-10 2009-09-10 Shonan Gosei-Jushi Seishakusho K.K. In-pipe work robot
DE102017118758A1 (de) * 2017-08-17 2019-02-21 Jt-Elektronik Gmbh Reinigungsmodul für Abwasserkanäle mit mehreren elektrischen Stellgliedern
GB2603438B (en) * 2018-02-05 2023-01-25 Airpole Ltd Roof cleaning apparatus
CN113274784B (zh) * 2021-06-01 2022-10-18 广州市朔康医疗科技有限公司 一种智能医疗废水过滤器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4883638A (pt) * 1972-02-08 1973-11-07
US3814330A (en) * 1973-03-01 1974-06-04 Mcneil Corp Nozzle
US3994310A (en) * 1975-11-11 1976-11-30 Brandon John H Duct cleaning apparatus
DK488376A (da) * 1976-10-28 1978-04-29 Iss Servisystem As Fremgangsmaade og apparat til fjernelse af faste belaegninger paa indersiden af roer
US4073302A (en) * 1977-01-18 1978-02-14 Jones Thomas E Cleaning apparatus for sewer pipes and the like
US4164325A (en) * 1977-11-21 1979-08-14 Watson John D High-pressure-rotary-nozzle apparatus

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Money down the drain", Institution of public health engineers, Symposium 28.5.80 *
"Renovation problems on smaller sewers", Municipal Engineer 25.3.80, p. 198 *

Also Published As

Publication number Publication date
EP0076283A1 (en) 1983-04-13
ZA822424B (en) 1983-03-30
NZ200262A (en) 1985-11-08
BR8207578A (pt) 1983-03-29
DE3274567D1 (en) 1987-01-15
WO1982003417A1 (en) 1982-10-14
JPS58500619A (ja) 1983-04-21
GB2098300B (en) 1985-04-24
GB2098300A (en) 1982-11-17

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