WO2013071394A1 - Appareil de nettoyage de canalisation, utilisation, système et procédé - Google Patents

Appareil de nettoyage de canalisation, utilisation, système et procédé Download PDF

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Publication number
WO2013071394A1
WO2013071394A1 PCT/CA2011/050715 CA2011050715W WO2013071394A1 WO 2013071394 A1 WO2013071394 A1 WO 2013071394A1 CA 2011050715 W CA2011050715 W CA 2011050715W WO 2013071394 A1 WO2013071394 A1 WO 2013071394A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
projectiles
head
tail
gas
Prior art date
Application number
PCT/CA2011/050715
Other languages
English (en)
Inventor
Randall Cooper
John HOCHFELLNER
Kevin LILLIE
Dave Marshall
Original Assignee
Envirologics Engineeering Inc.
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 Envirologics Engineeering Inc. filed Critical Envirologics Engineeering Inc.
Priority to PCT/CA2011/050715 priority Critical patent/WO2013071394A1/fr
Publication of WO2013071394A1 publication Critical patent/WO2013071394A1/fr

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
    • F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
    • F16L55/46—Launching or retrieval of pigs or moles
    • 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
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B08B9/0551—Control mechanisms therefor

Definitions

  • the present invention relates to pipe cleaning, and more specifically pipe cleaning with a deflector.
  • Transport pipes (especially liquid transport pipes) are known to become infested with many forms of build up, including tubercles in a case of municipal water pipes.
  • the pipes become sclerotic and continually narrow as tubercles build up. Regardless of pipe type (gas / liquid/ solid transport), flow eventually occludes with tubercle residue and other build up.
  • Few viable industrial and commercial solutions are available to deal with sclerotic pipes quickly and effectively.
  • Another option is to accelerate abrasive projectiles (like rocks of progressive calibre) through infected pipes.
  • a pipe is pressurized with a gas stream, and abrasive projectiles are fed into the stream.
  • the streaming projectiles strike and break away protruding tubercle portions, and discharge out of the pipe along with broken tubercles.
  • This option's defects include inability to clean a) smaller tubercle portions and thin residual layers satisfactorily; and b) pipe elbows, bends, and pipe joints satisfactorily. This option does not leave a properly prepared finish, making subsequent coating or lining difficult and unsatisfactory.
  • the present invention is an apparatus comprising a deflection head to fit within and deflect projectiles through a pipe.
  • FIGURE 1 is a perspective view of a deflector.
  • FIGURE 2 is a cut away view of a deflector within a pipe.
  • FIGURE 3 is a cross-section along the line 1-1 in FIGURE 2.
  • FIGURE 4 a cut-away view of an alternate embodiment deflector deflecting projectiles pipe.
  • FIGURE 5 is a cut away view of an alternate embodiment deflector within a pipe.
  • FIGURE 6 is a perspective view of a pipe cleaning system and method.
  • FIGURE 7 is a projectile hopper with rotary lock and gate valve, for dispensing projectiles.
  • Figure 6 shows a pipe cleaning system and method (10) generally.
  • the system and method (10) deflects streaming projectiles (20) (Figure 4) by striking them against a deflector (of which one embodiment is shown in Figure 1 generally by (30); another in Figure 5 generally by (40); and still yet another in Figure 4 generally by (70)) within a pipe (50).
  • a deflector of which one embodiment is shown in Figure 1 generally by (30); another in Figure 5 generally by (40); and still yet another in Figure 4 generally by (70)
  • a tubercle (60) is generally a bumpy, rocky, and rigid protuberance, forming wart-like lesion in pipes (50).
  • Tubercles (60) arise from natural atherosclerosis and mineral deposition, pollution, residual matter, and living organisms. Tubercle (60) formation is highly likely when any of solid, liquid, and gas matter is conveyed in pipes (50)
  • a projectile (20) is an impel capable body for firing into pipes (50), to smash tubercles (60). These include bumpy rocks, smooth rocks, ball bearings, shot, shards, ice, sand, shrapnel, bullets, rounds, and pellets, among others, all of variable calibre, shape, density, and hardness, as required.
  • streaming means impelling, firing, or propelling (by gas, liquid, magnetic propulsion, or other means).
  • a pump (80) to stream gas through the pipe (50).
  • Tubercles (60) are in that embodiment easier to smash with impelled projectiles (20) when tubercles (60) are dried and hardened. Drying and hardening can be done after a select pipe (50) section is isolated.
  • the pump (80) can be a blower or a compressor of any variation or type.
  • the deflector (30) has a head (90) that can be described as any of angled, curved, conical, semi-spherical, spherical, oblate, planar, and polyhedral.
  • the head (90) is a deflection surface. Any projectile (20) striking that head (90) will alter course and ricochet (see stippled arrows in Figure 4).
  • the deflector (30) additionally has a tail (100) that can be any of long, elaborate, extending, protruding, branched, forking, with arms, containing a smaller tail therein, including an axial shaft, including bolts, angled, curved, conical, oblate, spherical, and polyhedral.
  • the deflector (70) has a tail (110) that includes a connection neck, a lower disposed skirt (120), and brushes (130).
  • tails (100, 110) when present, bias their respective head (90) radially inward the pipe (50) when gas is streamed through the pipe (50).
  • the head (90) becomes a relatively steady and consistent target for controlled projectile (20) ricochet.
  • the head (90) and whichever tail (100, 110) are paired to each other.
  • the deflectors (30, 40, 70) can be controlled and moved back and forth in a gas stream, to improve cleaning effectiveness (ie more thorough cleaning of particularly tubercle (60) infested pipe (50)). Cleaning effectiveness is important for adhering coating or lining to the pipe (50) after cleaning. The cleaner the pipe (50), the better the coating or lining adheres, and the better protected (from infestation) it is in future use. This is also true when the lining or coating becomes classified as a replacement pipe (50).
  • the deflector (30, 40, 70) (as in Figures 1, 2, and 4
  • the deflector (40) head and tail are semi-spherical, together spherical, and integrated into one.
  • the semi-spheres in alternate embodiments need not be together and integrated as one.
  • a system can be formed by fitting a head (90) with cable (140) (or any other suitable connector e.g. chain link, etc.). Once fitted, the deflector (30), in whichever embodiment it may be, is then suitable for using in pipe (50) cleaning.
  • cable (140) or any other suitable connector e.g. chain link, etc.
  • the system is scalable by adding at least one more paired head (90) and tail
  • One method for pipe (50) cleaning requires digging ground to access a pipe (50).
  • a first (150) and second (160) pit is dug with a shovel (180), and the pipe (50) section of interest is isolated. Any liquid supply to the pipe (50), if present, is terminated.
  • a pump (80) is connected to one end of the pipe (50) in the first pit (150), using a split- or multi-arm pipe (170) connection. The pump (80) streams gas through the pipe (50) to empty the pipe (50) interior, and expose tubercles (60) encrusted therein to gas and projectile (20) flow.
  • a hopper (190) communicates with the pipe (50) through a pipe connection
  • the hopper (190) permits continuous projectile feeding without ceasing and restarting the gas stream.
  • One such hopper (190) includes a rotary lock valve (200) and a gate valve (210). Projectiles (20) are loaded into the hopper (190) at atmospheric pressure, or a pressure lower than the pipe (50) pressure when gas is streamed therein.
  • the lock valve (200) moves a pre-determined number of projectiles (20) from the hopper (190) bottom into position for transit past the gate valve (200). On rotation, the lock (200) transfers projectiles from a lower pressure state to an area set for increased pressure once the gate valve (210) is opened.
  • the increased pressure (from gas streaming, once the valve (210) is opened) impels the projectile (20) forward and through the pipe (50). If the projectiles (20) strike any tubercles (60), the projectiles (20) typically break away some portion of those tubercles (60) for discharge into the second pit (160).
  • An initial cleaning is performed by impelling enough projectiles (20) through the pipe (50) to create a reasonably consistent bore of a prescribed diameter.
  • intermixed projectiles (20) and tubercles (60) are discharged from the pipe (50) into the second pit (160).
  • projectile (20) feeding and gas streaming are ceased, and the discharged projectiles (20) and tubercles (60) can be collected and removed for waste disposal.
  • a deflector (30) is connected to a cable (140), and the cable (140) is connected to a winch (220) (for feeding and pulling cable (140)).
  • the deflector (30) is fed into a pipe connection (170) housing.
  • the connection (170) houses the deflector (30) until it is ready to be fed into the pipe (50).
  • the gas stream is then reintroduced, to assist in feeding the deflector (30) through the pipe (50) to a desired location.
  • the projectile (20) feed is reintroduced.
  • the projectiles (20) are impelled forward to strike the deflector (30).
  • the deflector (30) can be gently fed and pulled by the winch (220), to increase cleaning resolution in a target area.
  • Projectile (20) calibre can be adjusted to increase cleaning resolution and speed.
  • the deflected projectiles (20) clean the pipe (50) interior faster and more thoroughly than by just streaming projectiles (20) through the pipe (50) unobstructed.
  • the pipe (50) interior can be coated or lined, to extend pipe (50) life and reduce infestation.
  • the pipe (50) thereafter can be reintroduced into its original network and location. Liquid supply, if present, can afterward be reintroduced.
  • the pits (150, 160) can be refilled (if required).

Abstract

La présente invention, selon un mode de réalisation, concerne une tête de déviation. Un autre mode de réalisation concerne un système constitué d'une tête de déviation, d'une queue appariée et d'un câble fixé à la tête afin de la faire avancer et reculer dans la canalisation. Un autre mode de réalisation concerne un procédé faisant appel à la déviation de projectiles en circulation par une frappe contre un déflecteur à l'intérieur d'une canalisation. Encore un autre mode de réalisation concerne l'utilisation d'au moins un dispositif quelconque choisi dans un groupe composé d'un déflecteur, d'une tête de déviation dotée d'une queue appariée et d'une tête de déviation câblée dotée d'une queue appariée à des fins de nettoyage de canalisation.
PCT/CA2011/050715 2011-11-17 2011-11-17 Appareil de nettoyage de canalisation, utilisation, système et procédé WO2013071394A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CA2011/050715 WO2013071394A1 (fr) 2011-11-17 2011-11-17 Appareil de nettoyage de canalisation, utilisation, système et procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CA2011/050715 WO2013071394A1 (fr) 2011-11-17 2011-11-17 Appareil de nettoyage de canalisation, utilisation, système et procédé

Publications (1)

Publication Number Publication Date
WO2013071394A1 true WO2013071394A1 (fr) 2013-05-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2012370291B2 (en) * 2012-02-15 2016-05-12 Envirologics Engineering Inc. Pipe cleaning use and method
CN108212960A (zh) * 2018-02-05 2018-06-29 苏州思上环保科技有限公司 一种污水管道清污机构
CN108745631A (zh) * 2018-06-15 2018-11-06 苏州艾捷尔斯生物科技有限公司 一种农业谷物分离用圆球体磁选除铁装置
CN109500013A (zh) * 2018-12-07 2019-03-22 中国航天空气动力技术研究院 一种风洞管道清扫系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750339A (en) * 1971-12-20 1973-08-07 Carborundum Co Pipe cleaning apparatus
WO1997024194A1 (fr) * 1995-12-29 1997-07-10 Westinghouse Electric Corporation Procede et appareil de positionnement a distance et de guidage a travers un conduit d'un terminal de robot
GB2460823A (en) * 2008-06-04 2009-12-16 Kevin James Smith Water main cleaning arrangement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750339A (en) * 1971-12-20 1973-08-07 Carborundum Co Pipe cleaning apparatus
WO1997024194A1 (fr) * 1995-12-29 1997-07-10 Westinghouse Electric Corporation Procede et appareil de positionnement a distance et de guidage a travers un conduit d'un terminal de robot
GB2460823A (en) * 2008-06-04 2009-12-16 Kevin James Smith Water main cleaning arrangement

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2012370291B2 (en) * 2012-02-15 2016-05-12 Envirologics Engineering Inc. Pipe cleaning use and method
CN108212960A (zh) * 2018-02-05 2018-06-29 苏州思上环保科技有限公司 一种污水管道清污机构
CN108745631A (zh) * 2018-06-15 2018-11-06 苏州艾捷尔斯生物科技有限公司 一种农业谷物分离用圆球体磁选除铁装置
CN108745631B (zh) * 2018-06-15 2020-08-21 安徽德鑫源食品有限公司 一种农业谷物分离用圆球体磁选除铁装置
CN109500013A (zh) * 2018-12-07 2019-03-22 中国航天空气动力技术研究院 一种风洞管道清扫系统

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