SU785458A1 - Mechanism for running in and out continuous steel pipes and rods - Google Patents

Description

RELIEF AND RISE OF CONTINUOUS

(54) STA MECHANISM,

TYPE PIPES AND SHTANG

3

The invention relates to the field of exploitation and the substitution of a lot of repair of oil wells with the replacement of continuous steel wells. pipes and rods.

A device for lowering and lifting continuous steel pipes and rods rolled onto a drum containing a mechanism for lowering and lifting is installed above the well and perceiving; 1 load from the weight of the pipe and submersible equipment lifting operations;

Also known is the mechanism for launching and lifting continuous steel pipes and rods containing a drive mounted on the frame, two pulling chains, each block of which is fixed on a pivot bearing, a clamping unit including a wall, and an elastic balloon, interacting with a single hitch. from traction chains 2.

A disadvantage of the known device is that it does not allow the pipe to be moved with the sleeves or the assembly fiJTa; iry with local bulges.

The aim of the invention is.:. Зы: 1; his; no reliability of the mechanism for the intake of the SUSPN; i c,: ..

This goal is achieved, then the mechanism is additionally equipped with vTc;: i-: o; i and

 balloon, installed with the possibility of: about / knost-interaction with another traction chain, and the walls are made in the form of a hinge moving sections with roller and, and the pads of the traction chains connected; between each other elastic retainer. n.

FIG. shows a general view of the mechanism. descent and ascent; in fig. 2 is a section A-A of FIG. one; in fig. 3 - ton gova chain with shoe t.

10. The descent and ascent mechanism consists of two hydraulic blocks 1 with two traction chains 2 rotating on the upper supporting sprockets 3 and their main driving sprockets 4 driven in rotation from drive 5 through gears 6 and 7.

The hydraulic blocks 1 are filled with pressurized fluid, on npii .M-D. oil, plastic, cylinders 8, air; pulling on the traction chains 2 through a pad 9, CTCHKv 10 in the form of a hinged connection: chain with rollers P.

The tension of the chains is carried out by hydPl3 ;;; :: chocim; Cylinders 12 Chepez levers

The blocks 1 and the actuator 5 are mounted on a common frame 14 with support struts 15.

During operation, the tube 16 is clamped between the pads 17 of the rotating traction chains 2.

The clamping force is regulated by the pressure of oil: in cylinders 8 through clamp 18.

A block of guide rollers 19 is provided for guiding the pipe at the inlet and outlet from the mechanism of lowering and lifting.

The chain consists of links 20 connected by rollers 21, on which pads 17 are loosely attached, connected between themselves by elastic clamps 22 securing the pads in the required position.

With such fastening of the pads, the latter are shifted at the entrance and exit from the contact with the pipe without applying pressure to the chains.

The device works as follows.

Rotation from actuator 5 through gears 6 and 7 is transmitted to lower driving sprockets 4, which rotate chains 2, thrown over upper sprockets 3 and pinch the transport pipe 16 by means of cylinders 8 filled with pressure fluid, for example, oil through hinged wall 10 with rollers 11. The synchronous pressure of the traction chains is provided by the gearbox 7 connected to the shafts of the drive sprockets 4.

A block of guide rollers 19 serves to guide and align the pipe during lowering and lifting operations.

The hydraulic cylinders 12 and the arms 13 from the roller .m provide tension on the chains during operation of the mechanism.

During operation, the trip mechanism is installed above the well in racks 15 at a height that provides a normal operating condition.

Claims (2)

1. US patent N ° 3182877, cl. 226/172, pub. 1965. 2.US Patent M 3841407, cl. 166/315, publ. 1974 (prototype). nineteen