NL7805515A - Clamp for internal gripping and centering of pipe ends - has hydraulic cylinders to expand elements radially onto inner pipe wall - Google Patents

Clamp for internal gripping and centering of pipe ends - has hydraulic cylinders to expand elements radially onto inner pipe wall

Info

Publication number
NL7805515A
NL7805515A NL7805515A NL7805515A NL7805515A NL 7805515 A NL7805515 A NL 7805515A NL 7805515 A NL7805515 A NL 7805515A NL 7805515 A NL7805515 A NL 7805515A NL 7805515 A NL7805515 A NL 7805515A
Authority
NL
Netherlands
Prior art keywords
clamp
pipe
centering
hydraulic cylinders
elements radially
Prior art date
Application number
NL7805515A
Other languages
Dutch (nl)
Original Assignee
Verto Nv
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 Verto Nv filed Critical Verto Nv
Priority to NL7805515A priority Critical patent/NL7805515A/en
Publication of NL7805515A publication Critical patent/NL7805515A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The pipe clamp comprises a long frame with two fixing devices by means of which the outer ends of two pipes which are to be butt welded together are held coaxially during the welding process. Each fixing device consists of elements distributed around the axis of the clamp which move radially outwards against the inner wall of the pipe end. Each fixing device has its own hydraulic cylinder which serves as the actuator for this movement and is supplied with hydraulic fluid via passages within the clamp body and hydraulic hoses attached to connections on the back end of the clamp and passing through one of the pipes to the pump. The clamp may be used for a range of different pipe sizes. The device is relatively simple and robuts and enables a butt weld to be executed without interfering with the means of coaxially clamping the two pipe ends together.
NL7805515A 1978-05-22 1978-05-22 Clamp for internal gripping and centering of pipe ends - has hydraulic cylinders to expand elements radially onto inner pipe wall NL7805515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7805515A NL7805515A (en) 1978-05-22 1978-05-22 Clamp for internal gripping and centering of pipe ends - has hydraulic cylinders to expand elements radially onto inner pipe wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7805515A NL7805515A (en) 1978-05-22 1978-05-22 Clamp for internal gripping and centering of pipe ends - has hydraulic cylinders to expand elements radially onto inner pipe wall

Publications (1)

Publication Number Publication Date
NL7805515A true NL7805515A (en) 1979-11-26

Family

ID=19830883

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7805515A NL7805515A (en) 1978-05-22 1978-05-22 Clamp for internal gripping and centering of pipe ends - has hydraulic cylinders to expand elements radially onto inner pipe wall

Country Status (1)

Country Link
NL (1) NL7805515A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5076025A (en) * 1990-12-05 1991-12-31 Mathey International, Ltd. Land grinder mount
CN114833519A (en) * 2021-02-02 2022-08-02 中国石油天然气集团有限公司 Pipe internal butt-joint device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5076025A (en) * 1990-12-05 1991-12-31 Mathey International, Ltd. Land grinder mount
CN114833519A (en) * 2021-02-02 2022-08-02 中国石油天然气集团有限公司 Pipe internal butt-joint device

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
BV The patent application has lapsed