SU1629471A1 - Choke device of christmas-tree - Google Patents

Abstract

The invention relates to the mining industry and can be applied in wellhead equipment of production wells. The goal is to expand the functionality of the nipple device due to the possibility of its use in straight and angled sections of pipelines.

Description

The invention relates to the mining industry, in particular, to wellhead equipment of production wells.

The aim of the invention is to expand the functionality of the choke device due to the possibility of its use in the straight and angled sections of the pipelines of the Christmas tree.

Figure 1 shows the choke device, a general view; figure 2 - section aa in figure 1; on fig.Z - section bE in figure 1; figure 4 - section bb In figure 1.

The device comprises a housing 1 with a partition 2, in which the central 3 and eccentric 4 axial channels are made. The housing 1 houses a ferrule 5, which is rigidly connected with the shank 6. The ferrule 5 has concentric axial channels 7 evenly spaced around the circumference and having the possibility of axial alignment with the eccentric channel 4. Throttle sleeves 8 with different aisles are installed in the axial channels 7 of the yoke 5 sections. A drive, made in the form of a bevel gear with gears 9 and 10, is connected to the holder 5. The gear 9 is mounted on the shank 6 from the side opposite to the placement of the holder 5. The other gear 10 is rigidly connected with the rotary handle 11, the shaft axis b and the axis the rotary knob 11 is mutually perpendicular.

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A pointer 12 is mounted on the rotary knob 11. A scale 13 is attached to the case 1. The shank 6 is located in the central axial channel 3 of the partition 2.

The yoke 5 is secured against axial movement in the housing 1 by means of a disk 14. In the housing 1 a latch 15 is positioned against the yoke 5 relative to the housing 1 (the channels 4 and 7 must be aligned). The position of the pointer 17. relative to the scale 13 determines which of the throttling sleeves 8 are currently combined with the eccentric channel 4 in the partition 2. h

The housing 1 is fixed between the flanges 1b of the Christmas tree with bolted joints 17. The sealing of the housing 1 and the flanges 16 is carried out with sealing rings 18. The sealing elements sealing the individual parts in the housing are not indicated in the drawings.

The device works as follows.

If it is necessary to change the mode of operation, it is sufficient to turn the handle 11, having previously shut off the pipeline. Its rotation through the mating gears 9 and 10 is transmitted to the holder 5. The amount of rotation of the handle 11 is controlled by the position of the pointer 12 relative to the scale 13. With the help of the latch 15 the holder 5 is fixed in the selected position in the housing 1.

After the valve is opened, the reservoir fluid begins to flow from the well through the choke device through the branch valve.

Claims (1)

Invention Formula The nozzle device of the fountain armature, comprising a housing with a partition in which central and eccentric axial channels are made, is mounted in the housing with concentric axial channels, connected to a shaft, which is housed in the central axial channel of the partition, the eccentric channel of which is periodically combined with concentric axial cage channels in which throttling BUT five bushings of different flow sections, a drive with a rotary handle, a clamp of the position of the sleeve in the housing and a scale, characterized in that, in order to expand the functional capabilities of the device due to the possibility of its use in linear and angular sections of the pipelines of the Christmas tree, the drive made in the form of a bevel gear, one of the gears of which is mounted on the shank from the side opposite to the cage, and the other at the end of the rotary knob, the shank axis and the swivel bar heel of mutually perpendicular, wherein the shank is rigidly connected to a holder. Lig.2 12 l A ".J four Figm