EP0076283A1 - Ameliorations se rapportant au revetement interieur d'egouts, tuyaux, ou autres. - Google Patents

Ameliorations se rapportant au revetement interieur d'egouts, tuyaux, ou autres.

Info

Publication number
EP0076283A1
EP0076283A1 EP82900980A EP82900980A EP0076283A1 EP 0076283 A1 EP0076283 A1 EP 0076283A1 EP 82900980 A EP82900980 A EP 82900980A EP 82900980 A EP82900980 A EP 82900980A EP 0076283 A1 EP0076283 A1 EP 0076283A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
axis
obstruction
jet
sewer
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.)
Granted
Application number
EP82900980A
Other languages
German (de)
English (en)
Other versions
EP0076283B1 (fr
Inventor
Stephen Tracey
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/fr
Application granted granted Critical
Publication of EP0076283B1 publication Critical patent/EP0076283B1/fr
Expired legal-status Critical Current

Links

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.
  • 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 wail of the original sewer or pipeline must be removed to allov: passage of the inserted liner.
  • Such projections may. for example, consist of the protruding ends of soil pipes or branch pipes which have been inserted into lateral apertures in the main bore of the sewer or pips.
  • a method of removing by remote control an obstruction from within a sewer or pipe system comprises drawing into the system a device capable of providing a high pressure water jet, locating a jet nozzle of said device adjacent the internal circumference of the sewer or pipe which is obstructed, with the orifice of the jet nozzle closely adjacent said obstruction and the axis of said nozzle directed gene- rally axially along the bore of said sewer or pipe, and supplying pressurised water to said device whilst pivoting said nozzle about the longitudinal axis of said sewer or pipe whereby the obstruction is cut away substantially flush with the internal periphery of said sewer or pipe by the resulting water jet.
  • the method in accordance with the invention may be utilised for removing an obstruction either from a pri- mary sewer or pipeline through which the water jetting device is to be drawn, or from the orifice to a branch pipe which communicates with the primary sewer or pipe.
  • the axis of pivoting of said water jet nozzle coincides with tine longitudinal axis of the primary sever or pipe, and the radial distance of the nozzle from said pivotal axis is slightly less than the internal radius of the primary sewer or pipe
  • the axis of pivoting of said nozzle coincides with the longitudinal axis of the branch pipe, being substantially at right angles to the longitudinal axis of the primary sewer or pipe, and the radial distance of the nozzle from the rotary axis is correspondingly reduced
  • 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 nreferably 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 t he obstruction to be removed.
  • a water pressure of from 225 and 309 knlgrams 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. Table 1
  • Salt glazed clay pipe brick, porous concrete, polyester impregnated Terylene needle felt tube, polypropylene, poly- urethane, low density polyethylene, medium density polyethylene, rubber, nylon, pitch fibre-
  • the invention further provides a device for use in the method, comprising a body portion mounted on a sled, ox the like, to be drawn through the sewer pipe, said body portion having mounted thereon a rotary head arranged to be driven by a motor located within said body portion, said rotary head having at least one, and preferably two water jet nozzles radially spaced from its rotary axis.
  • the rotary axis of said head may be aligned along an access intended to be parallel to, or perpendicular to the longitudinal axis of the sewer pipe, in accordance with whether the cutting action of the water jets is to be utilised for removing peripheral obstructions from the bore of the sewer, or for cutting lateral access apertures in a lining thereof.
  • the rotary head carrying said nozzles is arranged to be driven from a motor located within the body of the device and intended for remote control by an operative.
  • a motor may be a pneumatically operated motor arranged to be coupled to air supply and return hoses .to be drawn into the sewer together with the water jetting device and its associated water supply hose.
  • the coupling of the air supply and return hoses to an appropriate remote control unit enables an operative to control the position of the rotary water jet cutting head, as seen, for example, with the aid of a closed circuit television camera fitted to the body of the device behind the rotary cutter head- The television camera thus enables both the initial location of projections to be removed and the control of the cutting process by the operative.
  • a water jetting device adapted to provide the appropriate lateral cutting action may be provided with a Geiger counter or similar sensor located in the region of the cutting head for detecting radiation from an isotope that may be located within the lateral branch pipe to which a communication aperture is to be cut. Location of the desired position of the cutter head can thus be achieved by remotely monitoring an output signal from the Geiger counter.
  • FIGS. 1A to 1C are perspective views of a water jetting device in accordance with the invention for use in removing obstructions from the internal wall of a sewer pipe or the like,
  • Figure 2 is a perspective view of the device shown in Figure 1C shown in relation to the end of an associated sewer pipe,
  • Figure 3 is a view of the device of Figures 1A to 1C, showing the water jet produced thereby,
  • Figure 4 is a diagrammatic view of a further embodiment of the water jetting device in accordance with the invention, shown in place within a sewer pipe, for the purpose of cutting a lateral aperture within an inserted lining, and
  • Figure 5 is a diagrammatic view of a sewer pipe showing the method of access to and operation of a device in accordance with, the invention.
  • Figures 1A to Figure 3 illustrate one embodiment of 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 skid assembly comprises clamping means 4 by means of which the generally cylindrical body portion 5 of the water jetting device may be clamped in place.
  • 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 the cylindrical 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 and unions 9 2nd 10 for the attachment of air supply and return hoses for the remote control of the internal pneumatic motor.
  • Figure 2 illustrates the size relationship between the water jetting device and- an associated sewer pipe, 2nd as may be seen by comparison of Figures 1B and 1C, the device may be adapted to pipes of varying size by utilising jet nozzles 7 of different effective lengths ⁇
  • FIG 4 there is illustrated another embodiment of device in accordance with the invention, wherein the water jetting head is utilised for the cutting of transverse apertures in a lining inserted within a sewer pipe.
  • components corresponding to those of Figures 1 to 3 have been indicated by like reference numerals, the only difference being that the axis of the water jetting device extends radially to a sewer pipe 20, rather than axially as in the previous embodiment.
  • 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 body 5 of the water jetting device is in this case 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.
  • 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. 5 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 the kind shown in Figures 1 to 3 is utilised, the device carrying a closed circuit television camera, not shown, 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 Figure 4.
  • the jet nozzle head 6 may be provided with only a single jet nozzle 7 , 2nd an extension adaptor may be provided for at-tachment 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 device shown in Figures 1 to 3.
  • Such a modification allows the device of Figure 4 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 o ⁇ erations to be disnensed 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)
  • Sewage (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

Procede permettant d'enlever les obstructions d'un systeme d'egouts ou de tuyaux, lequel consiste a introduire dans un orifice primaire (20) du systeme un dispositif a jet d'eau comprenant au moins un ajutage de jet (7). Une obstruction dans l'orifice principal (20) ou a l'orifice d'un tuyau d'embranchement (22) peut etre enleve en envoyant avec l'ajutage de jet (7) un jet d'eau a haute pression a une pression suffisante pour decouper et enlever l'obstruction. Lorsque l'obstruction se trouve dans l'orifice principal (20), l'ajutage a jet est situe avec son axe adjacent et approximativement parallele a la circonference interieure de l'orifice, et pivote autour d'un axe coincidant avec l'axe central de l'orifice. Lorsque l'obstruction est a l'entree du tuyau d'embranchement (22), l'axe de l'ajutage (7) est situe a angle droit par rapport a l'axe longitudinal de l'orifice (20) et pivote autour de l'axe central du tuyau d'embranchement (22). Le dispositif a jet d'eau est place dans le systeme d'egouts ou de tuyaux a l'aide d'un traineau ou autre moyen de guidage (1) et le mouvement de l'ajutage a jet (7) s'effectue par des moyens de guidage commandes a distance sous la supervision d'une camera de television en circuit ferme ou autre moyen de detection.
EP82900980A 1981-04-08 1982-04-08 Ameliorations se rapportant au revetement interieur d'egouts, tuyaux, ou autres Expired EP0076283B1 (fr)

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
GB8111053 1981-04-08
GB8111053A GB2098300B (en) 1981-04-08 1981-04-08 Improvements in and relating to the lining of sewers pipes or the like

Publications (2)

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

Family

ID=10521020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82900980A Expired EP0076283B1 (fr) 1981-04-08 1982-04-08 Ameliorations se rapportant au revetement interieur d'egouts, tuyaux, ou autres

Country Status (8)

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

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.
JP2009243257A (ja) * 2008-03-10 2009-10-22 Shonan Plastic Mfg Co Ltd 管内作業ロボット
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 (fr) * 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 (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8203417A1 *

Also Published As

Publication number Publication date
DE3274567D1 (en) 1987-01-15
WO1982003417A1 (fr) 1982-10-14
EP0076283B1 (fr) 1986-12-03
BR8207578A (pt) 1983-03-29
ZA822424B (en) 1983-03-30
GB2098300A (en) 1982-11-17
JPS58500619A (ja) 1983-04-21
NZ200262A (en) 1985-11-08
GB2098300B (en) 1985-04-24

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