SU1164496A2 - Device for incision of operative pressure pipeline - Google Patents

Abstract

DEVICE FOR TURNING INTO THE PRESSURE PIPELINE DURING ITS OPERATION go auth. No. 323990 ,. characterized in that, in order to control the cutting process, the housing of the drive mechanism is provided with a hinged bracket with a lead screw, installed coaxially with the stem and having a glass end with a through hole on the side surface.

Description

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The invention relates to the pipeline transport of liquids and gas and can be used both for active pipelines and for the construction of new ones. The aim of the invention is to provide control over the process of cutting a hole in a pipeline by installing a kinematically associated indicator at the end of the rod. FIG. 1 shows the proposed my device, a general view; in fig. 2 — node X in FIG. 1. The device consists of a transitional pipe 2 installed in pipeline 1, an intermediate chamber 3, an actuator mechanism housing 4, to which a bracket 5 is hingedly attached with a lead screw 6 mounted coaxially to the rod 7, at one end of which is mounted fixed to the drive screw 6 - cup 8, and on the other - a cup cutter 9 with a drill 10, equipped with a spring gripper 11 for removing the cut out in the pipe 1. A through groove 12 is made on the lateral surface of the cup 8 and there are marks Drilling is completed and Freewheeling. finished, necessary for visual control of the cutting process. The screw 6 is equipped with a nut 13, a lock nut 14 and a handle 15. On the rod 7 there are gears 16 and 17 which engage with gears (not shown) of the drive 18 and also a pair of screws: screw 19 and nut 20. Gear 16 and screw 19 is connected to the fflToi OM 7 by means of sliding keys, and the nut 20 has a detachable connection with gear 17. The cut-in into the pipeline is carried out as follows. The device is mounted on a rigidly secured by welding on the pipeline 1 of the adapter 2. Before starting the drilling, the drill 10 is in contact with the wall of the pipeline 1, the cup 8 with the bottom rests against the end of the rod 7, and the lock nut 14 tightens. Then turn on the actuator 18, which through gear 16, screw 19, nut 20 and mecTe nu 17 transmits rod 7 angular and axial movement. As the downward stem 7 moves axially downward, its upper end, which is in the sleeve 8, moves downward, and the stem 7 remains in place. As soon as the end of the rod is lowered in the through groove of the glass to the Drilling mark, the drive 18 is turned off, the lock nut 14 is turned off and the screw 15 and the screw 8 and the cloth 8 are pushed down to the end of the stem 7 by rotation. environment in the pipeline 1, the spring grip 11 of the drill 10 does not penetrate through the wall of the pipeline into its cavity. After selecting the idle stroke of the drill 10 and contacting the milling cutter 9 with the pipe wall, the rotation of the lead screw 6 is stopped and the lock nut 14 is tightened. With the pressure of the medium, the end of the rod 7 rests on the cup 8 and is kept from moving upwards. The gear 17 is withdrawn from the connection with the nut 20, which is moved on the screw by the amount of the lowering of the rod 7 after drilling (the idling value of the drill). Then the nut 20 is again connected to the gear 17 and the actuator 18 is turned on for the cutter 9 to cut the holes in the pipe 1. During the milling process, the rod 7 slowly goes down while the glass 8 is stationary. Observing visually the lowering of the rod end in the glass 8, control over the milling process. As soon as the upper end of the rod 7 is lowered to the mark in the glass 8, the milling is finished, the drive 18 is turned off. By turning the knob 15, the screw 6, with the lock nut unscrewed 14, is moved upwards, the bracket 5 is turned into a horizontal position due to the rotation in the hinges. Gear 17 is disengaged from the screw pair. The rod 7 with the cutting tool and the cut-out tool with this pressure is lifted into the intermediate chamber 3. After closing the valve (not shown) installed between the intermediate chamber 3 and the transition nozzle 2, a new pipeline is attached to the lateral process of the latter.

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Claims (1)

DEVICE FOR INSERTING INTO HEAD PIPELINE DURING ITS OPERATION, by auth. No. 323990 ,. This is due to the fact that, in order to be able to control the process of cutting the hole, the drive mechanism body is equipped with a pivotally mounted bracket with a lead screw mounted coaxially to the rod and having a glass with a through groove on the side surface at the end. 164496 2