RU193447U1 - THREE-WAY DISK CRANE - Google Patents

Abstract

The utility model relates to valve engineering and is intended to be used as a distributing device on pipelines for various purposes; it can be used in high pressure systems in the oil and gas industry, in particular, on oil well piping. The presented design of a three-way disk valve eliminates the installation of special fittings for sampling and steaming of the flow line on the wellhead valves. The three-way disk valve includes a casing made in the form of two disks with a cylindrical insert between them, inside which and between the casing disks a shutter mechanism is installed, made in the form of a central disk with a central through hole, inside of which through channels are made, the central axes of which are located relative to each other at an angle of 90 °, while on the side surface of the cylindrical insert also transverse through holes are made at an angle of 90 ° to each other (in the longitudinal plane). 8 ill.

Description

The utility model relates to valve engineering and is intended to be used as a distributing device on pipelines for various purposes; it can be used in high pressure systems in the oil and gas industry, in particular, on oil well piping.

State of the art

Known three-way pneumatic disk valve "TRS" (RF patent No. 2392522, class IPC F16K 3/08, F16K 11/074, published date 06/20/2010), comprising a housing, a housing cover with a pressure spring, rigidly connected to the housing by a threaded connection ; switching valve and valve switch. The switch is located in the through axial hole of the housing. The valve is located between the clamping spring and the housing and is detachably connected with the possibility of forced rotation around the axis of the housing by 90 ° with the working end of the switch. In the housing, circumferential with a center on the axial housing radially through 90 °, through cylindrical channels are made: inlet, working first and second, and a channel for bleeding air. The switching valve is a disc. In the body of the disk in the cross-lying sectors identical identical curly notches are made, formed by arcs of circles with a center coinciding with the center of the disk. When the disk is rotated 90 ° to one side or another of the recess, one working channel is connected to the inlet and the other to the air bleed channel. The valve body, cover and valve position switch are made of caprolon. The switching valve is made of graphitized caprolon. The disadvantage of this design is the inability to use it in an aggressive environment. In addition, the maximum stroke of the central disk is only 180 °.

A three-way valve is known (RF patent No. 22378, class IPC F16K 11/083, published date 03/27/2002), comprising a housing with three coupling nozzles, a conical plug with three four-sided windows in the case, whose sides are transverse to the longitudinal axis of the plug are made curvilinear in radius, as well as an stuffing box seal between the body and the cork and a union nut. The disadvantage of this design is the instability of the material of which the crane is made to aggressive environments.

The closest in technical essence to the proposed technical solution is a three-way ball valve (RF patent No. 2182270, class IPC F16K 11/087, F16K 5/06, publication date 05/10/2002), comprising a housing with a central channel mounted rotary a rod located in the groove of the ball valve with the possibility of interaction with the ball valve. The ball valve is provided with bore holes located perpendicular to the axis of rotation, and relies on the sealing seats located in the housing and threaded bushings, which are pressed against the valve. Sealing seats in the housing are made in the form of a single angular element with a working part smaller than the working part of the seats installed in the bushings. The latter are placed in the bushings with the possibility of floating movement together with the shutter relative to the bushings when tightening to a position corresponding to the coincidence of the axes of the housing, the rod and the shutter. The saddles themselves are made with a one-sided bevel to the thickness of the saddle. The ball valve is made of corundum ceramics with an alumina content of at least 96 ± 0.5% of the mass, strength of at least 360 MPa and an average grain size of not more than 8 μm ± 12%, with a groove wall profile made in the form of an involute and a gap in relation to the rod in which the damping element is installed. The disadvantage of this design is the low degree of tightness, determined by the contact area of the ball valve and seat.

Utility Model Disclosure

The technical result of this utility model is to expand the range of use of wellhead valves while simplifying its design and maintenance.

The technical result is achieved due to the fact that the casing is made in the form of two disks with a cylindrical insert between them, inside which and between the casing disks there is a shutter mechanism made in the form of a central disk with a central through hole, inside of which there are longitudinal internal channels, the central axes of which located relative to each other at an angle of about 120 °, and intersect in the central horizontal plane of the three-way disk crane, coinciding with the plane of placement the horizontal horizontal axis of the hole of the Central disk, while the intersection point of the Central axis of the inner channels is located between the hole of the Central disk and the inner side surface of the cylindrical insert, while on the side surface of the cylindrical insert in the longitudinal plane there are also transverse through holes at an angle of about 90 ° to each other to a friend.

Brief Description of the Drawings

In FIG. 1 is a cross-sectional view of a three-way disk valve. In FIG. 2 shows a longitudinal section of a three-way disk valve. FIG. 3 shows the shape of the switch. In FIG. 4 shows the placement of a three-way disk valve on wellhead valves during operations on the pipeline with pressure monitoring. In FIG. Figure 5 shows the location of the central disk of a three-way disk valve during sampling or during operations that do not require pressure control. In FIG. 6 shows the location of the central disk of a three-way disk valve for monitoring pressure during operation of the pipeline. In FIG. 7 shows the location of the central disk of a three-way disk valve during gas etching to replace the pressure gauge. In FIG. 8 presents the position of the crane "Everything is closed."

Utility Model Implementation

The three-way disk crane includes a housing 1 (Fig. 1), made in the form of two identical side disks, in one of which a through central hole of a square section is made, and in the other a through central hole with a square cross section. The three-way disk valve also includes a cylindrical insert 2 installed between the side disks of the housing 1, the outer diameter of which is not more than the overall diameter of the side disks of the housing 1. On the lateral cylindrical surface of the cylindrical insert 2, three through transverse holes 3 are made at an angle of 90 degrees to each other, 4, 5 of the same diameter (Fig. 2).

Between the side disks of the housing 1 and the cylindrical insert 2 there is a shutter mechanism made in the form of a central disk 6 (Fig. 2), with the possibility of forced 360 ° rotation around the central axis of the housing 1. A central through hole 7 of square cross section is made inside the central disk 6. Inside the central disk 6 in the longitudinal plane, internal channels 8, 9, 10 are made of the same diameter so that their central axes are located relative to each other at an angle of 120 °, intersecting in the central horizontal plane of the three-way disk valve, coinciding with the plane of the central horizontal axis of the hole 7 of the central disk 6. The intersection point of the central axes of the internal channels 8, 9, 10, the diameters of which approximately correspond to the diameters of the through holes 3, 4, 5 of insert 2, is located m Between the hole 7 of the central disk 6 and the inner side surface of the cylindrical insert 2. To the outer side surface of the cylindrical insert 2, perpendicular to the surface, the connecting pipes 11, 12, 13 are welded, the inner diameter of which is similar to the diameters of the through holes 3, 4, 5 of the insert 2.

For the operation of a three-way disk crane, a switch 14 is used, which is a longitudinal section in the longitudinal section of a square-shaped step cross-section (Fig. 3).

A three-way disk valve is installed on the wellhead in such a way that a pressure gauge is installed to the connecting pipe 11 located at the top of the cylindrical insert 2 (Fig. 4-8), to the connecting pipe 13 located opposite the pipe 11 in the lower part of the cylindrical insert 2, they attach a flow oil pipeline.

The work of a three-way disk crane is as follows:

- when conducting operations on the pipeline with pressure monitoring, the central disk 6 of the three-way disk valve using the switch 14 is set so that the through channels 3, 4, 5 of insert 2 and the internal channels 8, 9, 10 of the central disk 6 are hydraulically interconnected ( Fig. 4);

- when sampling or when conducting operations that do not require pressure control in the oil pipeline, the central disk 6 of the three-way disk valve using the switch 14 is set so that only through channels 4, 5 and internal channels 8 and 9 remain hydraulically interconnected ( Fig. 5);

- to control the pressure during operation of the oil pipeline, the central disk 6 of the three-way disk valve using the switch 14 is set so that through channels 3, 5 and internal channels 8, 10 remain hydraulically interconnected (Fig. 6);

- when etching gas to replace the pressure gauge, the central disk 6 of the three-way valve using the switch 14 is set so that only through channels 3, 4 and internal channels 9, 10 remain hydraulically connected to each other (Fig. 7);

- to close the flow of the oil pipeline, the Central disk 6 using the switch 14 is set in such a way that none of the through channels 3, 4, 5 of the cylindrical insert 2 is connected to the internal channels 8, 9, 10.

The presented design of a three-way disk crane, which eliminates the installation of special fittings for well sampling for sampling and steaming the flow line, is operated in the oil and gas production shops of LUKOIL-PERM LLC with a positive result.

Claims (1)

Three-way disk valve, comprising a housing and a shutter mechanism, characterized in that the housing is made in the form of two disks with a cylindrical insert between them, inside which and between the disks of the housing there is a shutter mechanism made in the form of a central disk with a central through hole, inside of which there are longitudinal internal channels, the central axes of which are located relative to each other at an angle of about 120 ° and intersect in the central horizontal plane of a three-way disk crane, matching with the plane of placement of the central horizontal axis of the hole of the Central disk, while the intersection point of the Central axes of the internal channels is located between the hole of the Central disk and the inner side surface of the cylindrical insert, while on the side surface of the cylindrical insert in the longitudinal plane there are also transverse through holes at an angle of about 90 ° to each other.

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