GB1270378A - Foamed plastic pig for pipe lines - Google Patents

Foamed plastic pig for pipe lines

Info

Publication number
GB1270378A
GB1270378A GB5620370A GB5620370A GB1270378A GB 1270378 A GB1270378 A GB 1270378A GB 5620370 A GB5620370 A GB 5620370A GB 5620370 A GB5620370 A GB 5620370A GB 1270378 A GB1270378 A GB 1270378A
Authority
GB
United Kingdom
Prior art keywords
foamed plastic
core
pig
shell
pipe
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
GB5620370A
Inventor
Harry James Girard
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 GB5620370A priority Critical patent/GB1270378A/en
Publication of GB1270378A publication Critical patent/GB1270378A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B08B9/0553—Cylindrically shaped pigs

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)

Abstract

1,270,378. Pipeline pigs. H. J. GIRARD. 26 Nov., 1970, No. 56203/70. Heading F2N. A pipeline pig comprises a cylindrical body having a core 12 of soft, sponge-like, foamed plastic, an outer shell 14 of relatively hard, sponge-like, foamed plastic, and, at the rear, an impermeable layer 16 of unfoamed plastic forming a fluid-tight seal with the pipe. Both the core and the shell may be of foamed polyurethane, the core having a density of 1-10 pounds per cubic foot and the shell a density of 20-40 pounds per cubic foot. The body of the pig being permeable prevents its being contracted by the hydrostatic pressure in a pipe.
GB5620370A 1970-11-26 1970-11-26 Foamed plastic pig for pipe lines Expired GB1270378A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5620370A GB1270378A (en) 1970-11-26 1970-11-26 Foamed plastic pig for pipe lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5620370A GB1270378A (en) 1970-11-26 1970-11-26 Foamed plastic pig for pipe lines

Publications (1)

Publication Number Publication Date
GB1270378A true GB1270378A (en) 1972-04-12

Family

ID=10476024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5620370A Expired GB1270378A (en) 1970-11-26 1970-11-26 Foamed plastic pig for pipe lines

Country Status (1)

Country Link
GB (1) GB1270378A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581616A1 (en) * 1992-07-31 1994-02-02 Petroleo Brasileiro S.A. - Petrobras Liquid removal process in pipelines, using a moving piston
EP0642847A1 (en) * 1993-09-13 1995-03-15 Petroleo Brasileiro S.A. - Petrobras Process for removing accumulated matter in pipes by means of a heated travelling element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0581616A1 (en) * 1992-07-31 1994-02-02 Petroleo Brasileiro S.A. - Petrobras Liquid removal process in pipelines, using a moving piston
US5389155A (en) * 1992-07-31 1995-02-14 Petroleo Brisileiro S.A. - Petrobras Liquid removal process in pipelines through a moving piston
EP0642847A1 (en) * 1993-09-13 1995-03-15 Petroleo Brasileiro S.A. - Petrobras Process for removing accumulated matter in pipes by means of a heated travelling element

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