GB1357765A - Insulated pressure pipe - Google Patents

Insulated pressure pipe

Info

Publication number
GB1357765A
GB1357765A GB5623771A GB5623771A GB1357765A GB 1357765 A GB1357765 A GB 1357765A GB 5623771 A GB5623771 A GB 5623771A GB 5623771 A GB5623771 A GB 5623771A GB 1357765 A GB1357765 A GB 1357765A
Authority
GB
United Kingdom
Prior art keywords
layer
shell
cell size
pipe
insulating
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
GB5623771A
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.)
Bauakademie der DDR
Original Assignee
Bauakademie der DDR
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 Bauakademie der DDR filed Critical Bauakademie der DDR
Priority to GB5623771A priority Critical patent/GB1357765A/en
Publication of GB1357765A publication Critical patent/GB1357765A/en
Expired legal-status Critical Current

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
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)
  • Laminated Bodies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

1357765 Insulated pipe DEUTSCHE BAUAKADEMIE ZU BERLIN 3 Dec 1971 56237/71 Heading F2P An insulated pipe comprises a pipe body or shell 1 and at least one layer of insulating material 3 surrounding (or surrounded by) the body or shell, the body and the layer being formed from the same foamed material (foamed polyuruthane, polymerizate of acril nitrite and butadiene styrene or glass) which in the insulation layer is less dense than in the body, the material in the latter having a compressive and tractive strength not less than six kilo-ponds per square centimetre. The insulation layer may be positioned between inner and outer bodies of relatively more dense material or two similar insulating layers may have the pipe body located between them. The insulating layer may be of progressively varying pore or cell size being of greatest pore or cell size in the centre region of the layer.
GB5623771A 1971-12-03 1971-12-03 Insulated pressure pipe Expired GB1357765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5623771A GB1357765A (en) 1971-12-03 1971-12-03 Insulated pressure pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5623771A GB1357765A (en) 1971-12-03 1971-12-03 Insulated pressure pipe

Publications (1)

Publication Number Publication Date
GB1357765A true GB1357765A (en) 1974-06-26

Family

ID=10476122

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5623771A Expired GB1357765A (en) 1971-12-03 1971-12-03 Insulated pressure pipe

Country Status (1)

Country Link
GB (1) GB1357765A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451261A1 (en) * 1979-03-15 1980-10-10 Kendall & Co METHOD OF FORMING INSULATING LAYERS ON A TUBE AND TUBE THUS OBTAINED
DE3029106A1 (en) * 1979-07-31 1981-02-12 Furukawa Electric Co Ltd HEAT INSULATION PIPE AND METHOD FOR THE PRODUCTION THEREOF
CN109237153A (en) * 2018-10-17 2019-01-18 沈阳化工大学 A kind of floating on water foam sebific duct with bore diameter gradient
US11332590B2 (en) 2019-11-28 2022-05-17 Sekisui Voltek, Llc Crosslinked polyolefin foam having large core cells
US11976175B2 (en) 2019-11-28 2024-05-07 Sekisui Voltek, Llc Split crosslinked polyolefin foam composition and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451261A1 (en) * 1979-03-15 1980-10-10 Kendall & Co METHOD OF FORMING INSULATING LAYERS ON A TUBE AND TUBE THUS OBTAINED
DE3029106A1 (en) * 1979-07-31 1981-02-12 Furukawa Electric Co Ltd HEAT INSULATION PIPE AND METHOD FOR THE PRODUCTION THEREOF
US4458723A (en) * 1979-07-31 1984-07-10 The Furukawa Electric Co., Ltd. Heat insulating pipe
CN109237153A (en) * 2018-10-17 2019-01-18 沈阳化工大学 A kind of floating on water foam sebific duct with bore diameter gradient
US11332590B2 (en) 2019-11-28 2022-05-17 Sekisui Voltek, Llc Crosslinked polyolefin foam having large core cells
US11976175B2 (en) 2019-11-28 2024-05-07 Sekisui Voltek, Llc Split crosslinked polyolefin foam composition and method

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees