US 5,217,073 A · Cut-and-close device for pressure pipes in production and supply installations

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.

Claims22

Dependent claims

A cut-and-close device for pressure pipes in production and supply installations for gaseous and liquid media comprising

a shearing plate;
a front part of a clamping block having a semicircular inner periphery and having a rectangular slit on the inside and possessing a slot opening large enough for the shearing plate;
a rear part of the clamping block having a semicircular inner periphery and having a rectangular slit on the inside, wherein the front part and the rear part form the clamping block divided in the middle of its circular opening into the front part and the rear part, wherein the front part and the rear part form two halves;
means for screwing the front part of the clamping block and the rear part of the clamping block together;
a connector bolted to the front part and having guide grooves, wherein the shearing plate runs in the guide grooves of the connector;
a pressure cylinder, wherein the connector is attached to the pressure cylinder;
a piston;
a cartridge operating as a remotely triggered propelling charge, wherein the pressure cylinder, the piston and the cartridge form part of a drive unit and wherein the shearing plate provides a pipe-cutting and pipe-closing plate driven by the propelling charge and the piston into the clamping block.

5 more elements

Dependencies are inferred from the claim text.

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

Life of this patent

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

Life of this patent

Abstract

Claims22