EP1048793A1 - Vorrichtung zum Entfernen von Sediment - Google Patents

Vorrichtung zum Entfernen von Sediment Download PDF

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Publication number
EP1048793A1
EP1048793A1 EP00303347A EP00303347A EP1048793A1 EP 1048793 A1 EP1048793 A1 EP 1048793A1 EP 00303347 A EP00303347 A EP 00303347A EP 00303347 A EP00303347 A EP 00303347A EP 1048793 A1 EP1048793 A1 EP 1048793A1
Authority
EP
European Patent Office
Prior art keywords
housing
wall
conduit
sediment
fluid pressure
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Withdrawn
Application number
EP00303347A
Other languages
English (en)
French (fr)
Inventor
Sian Smith
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.)
Thames Water Utilities Ltd
Original Assignee
Thames Water Utilities 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 Thames Water Utilities Ltd filed Critical Thames Water Utilities Ltd
Publication of EP1048793A1 publication Critical patent/EP1048793A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/006—Arrangements or methods for cleaning or refurbishing water conduits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4457—Arrangements of the frame or housing
    • B65H75/4471—Housing enclosing the reel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
    • B65H75/44—Constructional details
    • B65H75/4478—Constructional details relating to handling of fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/12—Actuating means linear hydraulic

Definitions

  • This invention relates to apparatus and a method for removal of sediment from pipes in water distribution systems and more particularly, to apparatus and a method for removing sediment from dead ends, or any section of pipe where cleaning velocity of water is not achieved.
  • pipework in water distribution systems can be regarded as self cleaning, as water flowing in the system either continuously or periodically will remove debris, such as sediment.
  • some areas of relatively quiescent water such as dead ends in water distribution systems have a tendency to collect sediment, the removal of which normally requires washing out via a wash out structure such as a hydrant adjacent to the area.
  • a wash out structure such as a hydrant adjacent to the area.
  • a sediment removal apparatus for removal of sediment from pipe in a water distribution system, comprising an elongate extendible member adapted to extend under fluid pressure through bends and direction changes in pipework, the member defining a conduit for fluid flow.
  • the member may comprise a flexible material and may be adapted to be made relatively rigid.
  • the member may comprise a plurality of elongate longitudinally extending bores capable of being pressurised to impart rigidity to the member.
  • the bores may extend substantially the length of the member, or a part, preferably a half thereof.
  • the apparatus may comprise a housing for storage of the member, the member being extendible from the housing by eversion of the member under fluid pressure. It is preferred that the conduit is formed by eversion of the member from the housing.
  • the housing may include rotatable means for retrieval of the member.
  • the member comprises an outer wall and an inner wall, the walls defining the bores, the inner wall becoming the outer wall and the outer wall defining the conduit on eversion of the member.
  • the material forming the member may have or be adapted to have a self-friction co-efficient of ⁇ 0.3 and is preferably capable of withstanding a differential pressure of > 1 bar.
  • a method for removing sediment from pipes in a water distribution system comprising extending an elongate extendible member adapted to extend under fluid pressure into the system, the member defining a conduit for fluid flow, and drawing off sediment containing fluid through the conduit.
  • the method may include the step of making the member relatively rigid when it has reached its desired position. This may be achieved by applying fluid pressure to it.
  • the method includes the step of extending the member by eversion under fluid pressure from a housing.
  • the pipe 2a is a mains supply pipe connected to a second pipe 2b which leads to a hydrant 22.
  • the mains pipe 2a has a spur 2c which has leading from it a domestic supply pipe 2d.
  • a domestic supply pipe 2d usually there will be more than one pipe 2d, but one is shown here for clarity.
  • the pipe 2d has a narrower diameter than the pipes 2a, 2b and 2c.
  • the water main is full of water under mains pressure and water may flow at a relatively low rate from the domestic supply pipe 2d. Occasionally water is drawn off from the hydrant.
  • sediment removal apparatus 1 for removal of sediment from pipes 2 in a water distribution system, comprising an elongate extendible member 3 adapted to extend under fluid pressure through bends and direction changes in pipework, the member defining a conduit 4 for fluid flow.
  • the apparatus 1 comprises a cylindrical chamber or housing 5 which has an outer casing 6 which sits on legs 7.
  • the casing 6 has an inner rotatable drum 8 and an outlet 9.
  • An elongate extendible member 3 illustrated in Figure 3 in the extended position is attached by one of its ends in a fluid tight manner to a rotatable connector 11 disposed at the centre of the drum 8.
  • the member 3 has first 12 and second 13 walls, as illustrated, the first wall defining the conduit 4 and the second wall defining, with the first wall 12 a plurality of longitudinally extending bores 14. At the end attached to the rotatable connector 11 the bores 14 are closed off.
  • the other end of the elongate extendible member 3 is attached to the cylindrical outlet 9 with the bores 14 in fluid communication with an inlet valve, as will be described below.
  • the member 3 comprises a first wall 12 and a second wall 13 in its extended condition.
  • the first wall 12 defines the conduit 4 in the extended condition and together, the first wall 12, the second wall 13 and a plurality of radial walls 14a define a plurality of bores 14.
  • the radial walls 14a extend between the first and second walls 12,13 so that the bores 14 constitute a number of longitudinally extending cells.
  • the cells may extend some or all of the length of the member 3.
  • the member 3 is formed from a plastics material. Examples of suitable materials useful for forming the member 3 are metalocene plastomer, butene copolymer or octene copolymer with slip additive.
  • FIG. 6a and 6b the attachment of the extendible member 3 to the cylindrical outlet 9 of the housing 5 is illustrated.
  • the member 3 comprises a first wall 12 and a second wall 13 separated by bores 14.
  • Figure 6a shows the member 3 in its condition prior to extension from the housing 5, and in this condition the first wall 12 and second wall 13 are juxtaposed.
  • the walls 12,13 are separated from one another, and pass through the central bore 26 of a cylindrical disc 27 which disc 27 comprises end flanges 28 defining a first diameter and relative thereto a central body part 29 defining a second, smaller diameter.
  • the central body part 29 includes two opposing through-apertures 30 which communicate with the interior of the bore 26.
  • the first wall 12 attaches by its inherent resilience to one flange 28 of the disc 27 terminating before the aperture 30.
  • the second wall 13 attaches in the same manner to the other flange 28, again terminating before the apertures 30.
  • the disc 27 seats in a bore 31 of the outlet 9 dimensioned to receive the flanges 28 as a snug fit.
  • the bore 31 has an internal shoulder 34, and a seal 35.
  • the outlet 9 is attached to the housing 5 via screw holes 32, with an 'O'-ring 33 provided to ensure a fluid-tight fit.
  • the outlet 9 defines a cavity in which the disc 27 is securely maintained and which keeps the walls 12,13 second to the flanges 28.
  • An aperture 36 in the outlet 9 is in fluid communication with inlet 16 ( Figure 3) which thus feeds into bore 14 of the member 3.
  • a support sleeve 36 is disposed within bore 26 which helps prevent collapse of the member 3 when pressurised.
  • the member 3 is shown partially everted. From this it can be seen that on eversion, the walls 12,13 are juxtaposed, the first wall 12 defining the conduit 4 for fluid flow in the extended condition.
  • the coupling pipe 21 for use with the above described apparatus.
  • the coupling pipe 21 has at one end a fitting dimensioned to co-operate with the outlet 9 to fix the pipe 21 to the chamber 5.
  • the other end of the pipe is adapted to be attachable to a correspondingly shaped and dimensioned part of a hydrant 22 as shown in Figure 2.
  • the pipe 21 defines a path into the hydrant 22 for the extendible member 3.
  • the extendible member 3 is stored within the chamber 5. It is coiled in the housing 5 about the rotatable connector 11. To remove sediment from pipes in a water distribution system the apparatus 1 is placed adjacent to an entry point to the system such as hydrant 22. The coupling pipe 21 is attached to the outlet 9 and to a spur 23 of the hydrant 22 which is above the valve 24 of the hydrant thus, at this point water cannot flow from the water distribution system into the apparatus.
  • the member 3 can be formed such that it is biased towards travelling in a particular direction when it reaches a junction.
  • the member 3 can be formed with a part of the wall stiffer or thicker, or even shorter, or could be manufactured to be curved.
  • fluid pressure such as for example air pressure is applied to the bores 14 via inlet 16 and valve 19. Due to the flexibility of the material the bores 14 expand to the position illustrated in Figure 6, which makes the member 3 relatively rigid and allows water to pass more easily up the conduit 4.
  • valve 18 on housing 5 is opened permitting water from the system to flow into the conduit 4 to be drawn off via fluid outlet 17 and valve 18.
  • Figure 6 illustrates the member 3 in its everted form, from which it will be noted that the first wall 12 and second wall 13 are now juxtaposed from Figure 4.
  • the wall which forms the outer wall when the member 3 is in the housing may be made more flexible such that upon inversion when it becomes the inner wall there is some slack.
  • Sediment removal begins as soon as an appreciable flow through the conduit 4 and out of the outlet 17 has begun.
  • the sediment which has accumulated in the pipe 2c containing the relatively quiescent water is disturbed by the faster water flow and water containing entrained sediment is drawn off from the system up conduit 4 and is thereby prevented from contaminating water in the system.
  • valve 17 When sufficient water has been withdrawn the valve 17 is closed and valve 15 is opened. The fluid pressure is maintained equal to the pressure in the pipe and the extendible member is withdrawn by turning the rotatable drum 8. The fluid which earlier entered the drum 5 and the bore 14 is allowed its escape via inlets 15 and 16 respectively, at a rate commensurate with the rate of withdrawal of the extendible member 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Mechanical Engineering (AREA)
EP00303347A 1999-04-23 2000-04-20 Vorrichtung zum Entfernen von Sediment Withdrawn EP1048793A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9909457.5A GB9909457D0 (en) 1999-04-23 1999-04-23 Apparatus for locating a device into a pipe
GB9909457 1999-04-26

Publications (1)

Publication Number Publication Date
EP1048793A1 true EP1048793A1 (de) 2000-11-02

Family

ID=10852193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00303347A Withdrawn EP1048793A1 (de) 1999-04-23 2000-04-20 Vorrichtung zum Entfernen von Sediment

Country Status (2)

Country Link
EP (1) EP1048793A1 (de)
GB (1) GB9909457D0 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9816240B1 (en) 2014-09-02 2017-11-14 John A. Tesvich Sediment suction sink and method for sediment control in rivers, streams, and channels
US10094091B1 (en) 2015-09-02 2018-10-09 John A. Tesvich Sediment suction sink and method for sediment control in rivers, streams, and channels

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602571A1 (fr) * 1986-08-06 1988-02-12 Assainissement Rationnel Pompa Procede de nettoyage d'une conduite notamment d'un reseau de distribution d'eau potable et systeme pour la mise en oeuvre de ce procede
DE9390082U1 (de) * 1992-04-21 1994-04-14 Hüls Troisdorf AG, 53840 Troisdorf System zum Relining von Kanalrohrabschnitten
FR2698713A1 (fr) * 1992-12-01 1994-06-03 Framatome Sa Dispositif et procédé de nettoyage d'un conduit et notamment d'un tube de guidage d'instrumentation d'un réacteur nucléaire.
US5466093A (en) * 1994-05-16 1995-11-14 Keller; Carl E. Method and apparatus for removing contaminants from a duct or pipe
US5656117A (en) * 1991-12-20 1997-08-12 Insituform (Netherlands) B.V. Method of lining passageways by applying a pre-liner sleeve and hardenable composition
FR2754554A1 (fr) * 1996-10-14 1998-04-17 Bayard Dispositif de purge et reseau de distribution d'eau comprenant un tel dispositif

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602571A1 (fr) * 1986-08-06 1988-02-12 Assainissement Rationnel Pompa Procede de nettoyage d'une conduite notamment d'un reseau de distribution d'eau potable et systeme pour la mise en oeuvre de ce procede
US5656117A (en) * 1991-12-20 1997-08-12 Insituform (Netherlands) B.V. Method of lining passageways by applying a pre-liner sleeve and hardenable composition
DE9390082U1 (de) * 1992-04-21 1994-04-14 Hüls Troisdorf AG, 53840 Troisdorf System zum Relining von Kanalrohrabschnitten
FR2698713A1 (fr) * 1992-12-01 1994-06-03 Framatome Sa Dispositif et procédé de nettoyage d'un conduit et notamment d'un tube de guidage d'instrumentation d'un réacteur nucléaire.
US5466093A (en) * 1994-05-16 1995-11-14 Keller; Carl E. Method and apparatus for removing contaminants from a duct or pipe
FR2754554A1 (fr) * 1996-10-14 1998-04-17 Bayard Dispositif de purge et reseau de distribution d'eau comprenant un tel dispositif

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9816240B1 (en) 2014-09-02 2017-11-14 John A. Tesvich Sediment suction sink and method for sediment control in rivers, streams, and channels
US10094091B1 (en) 2015-09-02 2018-10-09 John A. Tesvich Sediment suction sink and method for sediment control in rivers, streams, and channels

Also Published As

Publication number Publication date
GB9909457D0 (en) 1999-06-23

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