SU1675605A1 - Spherical cock - Google Patents

Abstract

The invention can be used in ball valves installed in a boring tool to shut off a channel with water and oil passages of the invention invented by I ib — improving repair of fitness due to the possibility of dismantling a crane through an output channel. In housing 1 with input 2 and output 3 channels, a ball valve is placed 4 with a cylindrical bore 6 and a rotation stop 7 To the shutter 4 two seats 8 and 9 are elastically loaded. A retaining sleeve 14 is fixed in channel 3, fixed from axial displacement to the stop Oval 15 The inner surfaces of the saddle 8 and the bushes 14 are filled with conical vertices. The apex is directed to the toron of the channel. 3 The diameters of the cross sections of the surfaces adjacent to the bolt 4 are equal to the diameter from the vertex 6 4 1

Description

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The invention relates to stop valves, namely to ball valves installed in a drilling tool for closing a channel with existing oil and gas shows.

The purpose of the invention is to improve maintainability due to the possibility of dismantling the crane through the output channel.

FIG. 1 shows a ball valve, general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 is a view of B in FIG. one.

The crane includes a housing 1 with an input 2 and output 3 channels. In the case there is a ball valve 4 with a coupling 5, a cylindrical bore 6 and a stop 7 of rotation. The saddles 8 and 9 are elastically loaded to the closure by the disc springs 10 and 11 and contain sealing elements 12. In the output channel 3, a ram 13 and a retainer 14 of the sleeve are installed. The sleeve 14 is fixed against axial displacement to the right by a retaining ring 15. The inner surfaces of the seat 8 and the sleeves 14 are tapered. The top of the cone is directed towards the output channel 3. The diameters of the cross sections of these surfaces adjacent to the gate 4 are equal to the diameter of the bore 6. The springs 10 and 11 and the sleeve 3 are insulated from the working medium by sealing rings 16. The body 1 is made in the form of a pipe with stepped groove , on the right side there is a groove under the nipple, and on the left - under the coupling.

The conical surfaces of the saddle 9 and the hole 14 simplify the process of disassembling the crane, for example, when replacing sealing elements, for which a special embossing mandrel is used, which passes

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It flows through the inlet channel 2 and the opening 6 in the gate 4 and abuts against the sleeve 14, cemented during operation with fluid or drilling mud. Before knocking out the sleeve 14, the ring 15 is pre-removed.

Crane works as follows.

FIG. 1 shows the position in which the opening 6 of the crane is blocked by the shutter 4. To open the crane, it is necessary to insert the control key into the opening G of the coupling 5 and turn it counterclockwise, while the plane D (Fig. 4) is aligned with the turning plane Ј of the turn restriction 7 .

To close the crane, the control key must be turned clockwise, while the plane Ж (Fig. 4) is aligned with the turn of the shutter with the plane E of the turn stop 11.

Claims (1)

Invention Formula A ball valve, comprising a housing with inlet and outlet channels, a ball valve placed in it with a cylindrical through-hole and a rotation stop, and two seats that are elastically loaded to the gate, with a holding sleeve fixed in the output channel, fixed from axial displacement by a retaining ring, characterized in that , in order to increase maintainability, the inner surfaces of the seat, located in the inlet channel, and the retaining sleeve are made tapered, with the apex of the cone pointing towards the outlet channel, and the diameters of their cross-sections adjacent to the gate, is equal to the diameter of said passageway. four Schi z / 777 / 13 Figz  . /P l . well