SU777309A1 - Flow nipple for gas well output control - Google Patents

Description

one

The invention relates to the mining, oil and gas industry and can find uses for regulating flows containing solid mechanical impurities (quartz sand).

A well-known gas flow meter is used to regulate the flow rate of gas wells, in which a chiper, a conical lash and a pilot nozzle 1 are installed in the housing.

The disadvantage of this design is reduced wear resistance.

The aim of the invention is to increase wear resistance.

This goal is achieved by the fact that the spike is turned around its axis at an angle to the direction of flow, the magnitude of which is related to the angle of conicity of the conical knit by the following relation

T, 0.333,

where a is the angle of installation of the schiber in degrees

(eg, ); p is the angle of the cone of the schayba. FIG. 1 shows a general view of the nozzle; in fig. 2 - section A-A of FIG. one; in fig. 3 is a braking scheme for solid mechanical particles in the flow nipple zone.

The nozzle consists of a housing 1, a flange of the pipeline 2, a flat spline 3 for the passage of the working medium at an angle of 30 ° to the flow axis, a replaceable guide pipe 4 for protecting the flange pipe section from wear, a conical replaceable washer 5 located between the housing of the fitting 1 and the second flange 6 from the side of the incident flow.

1Q The device works as follows.

The gas flow carrying the abrasive particles and the dropping liquid falls into the cone of the clamp 5. The cone is designed in such a way

J5 that the rebounding particles from its conical surface, colliding with particles moving straight in the direction of the gate, and particles reflecting from the opposite walls of the cone, form

2Q stagnation zone. In it, the speed of abrasive particles is very small, in order to destroy the surface of the gate 3 and the body of the choke. In addition, the ratio of 0.333 provides

25, the abrasive particles, reflected even from the outermost wall of the conical surface, do not fall on the gate 3 (Fig. 2, only the front surface of the gate) is shown. The angle of the gate is justified

relatively high wear resistance of solid structural material. The manufacture of the gate 3 with a hole for the passage of the working medium and sufficient sealing against the walls of the housing 1 of the fitting prevents the scoring of the surface and gas regrind.

Thus, the abrasive mechanical particles, slowed down in the stagnant zone, have lower abrasive properties, as a result of which the durability of the entire choke assembly is increased.

The guide nozzle 4 is screwed onto the body 1 and serves to stabilize a highly developed turbulent flow, and also significantly protects the flange part of the pipe 2 from destruction.

In the proposed fitting design, the gate is reciprocated in a vertical direction by mechanical, manual or automatic drive.

Claims (1)

Invention Formula A fitting for adjusting the flow rate of gas wells, in the body of which a gate is installed, a conical washer and a direction pipe, characterized in that, in order to increase wear resistance, the gate is turned around its axis at an angle to the flow direction, the magnitude of which is related to the angle of taper conical washer with the following ratio: - .0,333. Rcon where "is the angle of installation of the gate in degrees (eg, ); . ip is the angle of the washer cone. Sources of information taken into account during the examination 1. V. Biruka, et al. Abrasive gas field equipment; "Bosom. 1977, p. 178-179,