GB793006A - Process and apparatus for lining metallic tubes with insulating material - Google Patents

Process and apparatus for lining metallic tubes with insulating material

Info

Publication number
GB793006A
GB793006A GB4027/56A GB402756A GB793006A GB 793006 A GB793006 A GB 793006A GB 4027/56 A GB4027/56 A GB 4027/56A GB 402756 A GB402756 A GB 402756A GB 793006 A GB793006 A GB 793006A
Authority
GB
United Kingdom
Prior art keywords
solution
tube
tank
heated
heating
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
GB4027/56A
Inventor
John Albert Leno
Walter Eric Simpson
Paxton Duffield Wilbraham
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to ES0232547A priority Critical patent/ES232547A1/en
Publication of GB793006A publication Critical patent/GB793006A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/002—Inhomogeneous material in general
    • H01B3/004—Inhomogeneous material in general with conductive additives or conductive layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
    • B05C7/04—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work the liquid or other fluent material flowing or being moved through the work; the work being filled with liquid or other fluent material and emptied
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Abstract

<PICT:0793006/III/1> Metallic tubes are lined with insulating material by drawing a solution of the material, e.g. a synthetic resin such as polyethylene or polystyrene, up into the vertically disposed tube, allowing the solution to drain therefrom at a constant rate so as to leave a coating of solution on the interior surface of the tube, then heating to evaporate the solvent from the coating. If necessary in order to keep the material dissolved, the solution while being drawn up and while retained in the tube may be maintained at an elevated temperature by heaters outside the tube. As shown, a solution of polyethylene in xylene is enclosed in a storage tank 1 heated by steam coils 2, and a copper tube 3 previously treated by vapour de-greasing, acid pickling, washing and plating with cadmium or other metal, or by cleaning which may or may not be followed by the controlled formation of an oxide film, is connected in an air-tight manner to the tank 1 by a tube 4 which dips into the solution. An inert gas, e.g. nitrogen, under pressure is admitted to the space above the solution in the tank by pipe 11 and valve 9, and the solution is thus forced up the tube 3 until it appears in the sight-glass 7 being kept hot by the steam coils 18. The solution is allowed to remain in the tube for a time, then drained back into the tank at a constant rate controlled by the automatic valve 8 which allows pressure to be increased at a predetermined rate to compensate for the loss of head of the solution, leaving a film on the interior surface of the tube. The xylene is evaporated from the film by the heating coils 18, the heating is then stopped and the vapour removed by a stream of inert gas via the pipes 6 and 16. As a further example, a solution of polystyrene in toluene may be used; in this instance, solution is effected at room temperature, the tank is not heated, and the tube 3 is only heated after the solution has been drained back into the tank. Specification 751,322, [Group XL (b)], is refrered to.
GB4027/56A 1956-02-09 1956-02-09 Process and apparatus for lining metallic tubes with insulating material Expired GB793006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES0232547A ES232547A1 (en) 1956-02-09 1956-12-18 Procedure for lining metal tubes with insulating material (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB351874X 1956-02-09

Publications (1)

Publication Number Publication Date
GB793006A true GB793006A (en) 1958-04-09

Family

ID=10374859

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4027/56A Expired GB793006A (en) 1956-02-09 1956-02-09 Process and apparatus for lining metallic tubes with insulating material

Country Status (5)

Country Link
BE (1) BE554819A (en)
CH (1) CH351874A (en)
DE (1) DE1029063B (en)
GB (1) GB793006A (en)
NL (2) NL92758C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2638451A1 (en) * 1988-11-03 1990-05-04 Ruggieri METHOD FOR PRODUCING A FIRE TRANSMISSION CONDUIT AND CONDUIT OBTAINED BY THIS METHOD

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1230871B (en) * 1963-09-13 1966-12-22 Felten & Guilleaume Carlswerk Process for the inner coating of a waveguide for the transmission of electromagnetic waves with a thin dielectric layer
GB1105091A (en) * 1965-08-03 1968-03-06 Saunders Roe & Nuclear Entpr Improvements in and relating to the coating of tubes during the manufacture of light sources

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2638451A1 (en) * 1988-11-03 1990-05-04 Ruggieri METHOD FOR PRODUCING A FIRE TRANSMISSION CONDUIT AND CONDUIT OBTAINED BY THIS METHOD
EP0367669A1 (en) * 1988-11-03 1990-05-09 Ruggieri Method for making an ignition transmission cord, and cord obtained thereby

Also Published As

Publication number Publication date
NL92758C (en) 1900-01-01
NL212682A (en) 1900-01-01
CH351874A (en) 1961-01-31
DE1029063B (en) 1958-04-30
BE554819A (en) 1900-01-01

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