Cut-and-close device for pressure pipes in production and supply

Details Cut-and-close device for pressure pipes in production and supply Cut-and-close device for pressure pipes in production and supply

1992-03-02

1993-06-08

Bui, Thuy M.

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

166 55, E21B 2900

Patent

active

052170730

ABSTRACT:
A cut-and-close device for pressure pipes in production and supply installations for gaseous and liquid media includes a two-piece clamping block. A pipe-cutting and pipe-closing plate is driven into said clamping block by means of a propelling charge and a piston, both of which form part of a drive unit. The clamping block (1) is divided in the middle of its circular opening into a rear part (1.1) and a front part (1.2). The rear part (1.1) and the front part (1.2) can be screwed together. The rear part (1.1) and the front part (1.2) have rectangular slits (3) on the inside. The front part (1.2) also possesses a slot opening (5) large enough for a shearing plate (6). The shearing plate (6) runs in guide grooves (16) of a connector (12) bolted to the front part (1.2) of the clamping block (1). The conductor (12) is attached to the drive unit consisting of a pressure cylinder (13), a piston (14), and a cartridge furnishing a remotely triggered propelling charge.

REFERENCES:
patent: 1890230 (1931-06-01), Bettinger
patent: 3598154 (1971-08-01), Brundage
patent: 3692107 (1972-09-01), Slator et al.
patent: 3923082 (1975-12-01), Blazek
patent: 4369845 (1983-01-01), Henson et al.
patent: 4476935 (1984-10-01), Hynes et al.

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