SU1409749A1 - Blowout preventer - Google Patents

Abstract

The invention relates to the field of the mining industry and makes it possible to increase the reliability of the operation of the welder. It contains a Cornus I with a lid 9, a plank (P), a hydraulic cylinder (HZ) 4 with a flange 5 having a tapered valve called 16. In the cavity HZ 4 there is a piston 6 with a rod 7, and a sliding axial channel 8, a drive with an opening 11 and closing 10 P channels n fixation unit P. It is made in the form of segments 12 having a conical outer surface. In the channel 8 is installed a pusher 13 in the form of a cylinder with an annular protrusion (KB) 14 at one end and a cone 15 at the other. Lid 9 is made with a chamber in which KB 14 is placed, which divides it into two chambers A and B. One of them B is hydraulically connected to the opening channel 1 1, and the other A is connected to the closing channel 10. When the fluid is supplied to HZ 4 the preventer is closed by moving P. The groove 17 falls under the sealing ring of the flange 5. The liquid enters chamber A, moving KB 14 forward. The cone 15 lifts the segment 12 up to the stop in the groove 16. The right side of the portions 6 is fixed on the flange 5. When the preventer opens, the liquid enters chamber B and the pusher 13 moves back. As a result, there is a movement of the piston 6 and P to the opening of the preventer. 5 il. about (about

Description

20/1 74 b 22 8

WITH

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with

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FIG. g

I The invention relates to the mining industry, in particular to oil-field equipment, and is intended to prevent emissions and open Iri fountains from drilling oil and gas wells. The purpose of the invention is to increase the reliability of the preventer.

FIG. 1 shows a preventer, a common zid; in fig. 2 - preventer unit at the open non-fixed position of the dies; in fig. 3 - the same, with the closed non-fixed position of the dies; on zig. 4 - the same, with the fixed fixed: position of the dies; in fig. On the 5th, with the position indicator of the plate.

The preventer consists of body 1, plate1 and 2, rotational distribution mechanism 3, hydraulic cylinder 4 with flange 5, 3 of the cavity of which is installed portion 6: about rod 7 having axial drip 8. Case 1 has a cover 9. The drive is made with a closing 10 and opening 11 11 channels 2. The fixing unit of the plate is made in the form of segments 12. The pre-iCHTOp has a pusher 13 with an annular pin 14 and a tapered end 15. The annular protrusion 14 of the pusher 13 places 3 cavities (chamber) of the cover 9 and divides it into the cavity (chamber) A, st connected to the concealing channel 10, and the cavity (caper) B, which is connected with the opening channel 11. In the flange 5 of the hydraulic cylinder 4 there is a taper groove 16 for placing 12 segments in it.

The preventer works as follows.

When the die 2 is closed, the pressurized fluid from the hydraulic actuator (not shown) flows through the rotary distribution mechanism 3, the channel 10 of the cover 9, the annular channel between the housing 1 and the hydraulic cylinder 4 into its cavity. In this case, lash 2 moves to the closing of the preamplifier. In the closed position of the plate 2 | The anavka 17 of the rod end of the piston 6 shows under the sealing ring 18 of the flange 5 of the hydraulic cylinder 4 (Fig. 3). Fluid. Through the gap between segment 12 and the 19 N window, the axial channel 8 formed between the rod 20 and the cylindrical part of the pusher 13 enters cavity A, moves the piston part of the pusher forward, and the conical end 15 of the pusher lifts the segment 12 up to the stop into the surface of the groove 16 of the flange of the hydraulic cylinder 4. The rod part of the piston 6 is fixed on the flange 5 of the hydraulic cylinder 4, which is rigidly connected to the housing I (Fig. 4). This position corresponds to the closed fixed position of the dies.

When opening the preventer, the liquid under

pressure from the hydraulic drive through the rotation-distribution mechanism 3 and the channel 11 of the cover 9 enters the cavity B and the pusher moves back, i.e. its taper end 15 releases the segment 12

(FIG. 3) and the stem unlocks. In this position, the pusher 13, the groove 21 is located under the sealing ring 22, the fluid enters the cylinder cavity and moves the piston 6 and the die 2 until the preventer is fully opened (Fig. 1 and 2).

Connecting to the thread of the rod 20 pointer 23 of the position of the dies, you can visually determine the location of the die 2 relative to the body 1 of the preventer.

25

Claims (1)

Invention Formula The preventer, comprising a housing with a lid, dies, a hydraulic cylinder with a flange, in the cavity of which a piston with a rod having an axial channel is installed, a drive with opening and closing the plates with channels and the fixing unit of the plates, made in the form of segments, characterized in that, in order to increase the reliability of the preventer, it is equipped with a pusher installed in the axial channel of the rod and made in the form of a cylinder with an annular protrusion at one end and a cone at the other, the lid being made with a chamber in which an annular protrusion is placed dividing it into two chambers, one of which is hydraulically connected with opening channel, and the other with a closing channel, the segments having a conical outer surface, and in the hydraulic cylinder flange there is a tapered groove for accommodating the segments when interaction with the tapered end of the pusher. 4 7 / // 4 22 8 20 (rig.1 9W  L 20 A 72 7/8 3 7 epuf. // / 7 7/5 dzig.5