RU7445U1 - CENTRIFUGAL PUMP GAS SEPARATOR FOR OIL PRODUCTION FROM WELLS - Google Patents

Abstract

Gas separator of a centrifugal pump for oil production from wells, including a cylindrical body and one or more centrifugal vane separators mounted on the shaft, one or more centrifugal wheels and guide vanes and a screw for moving the gas-liquid mixture, characterized in that a sleeve is installed in the cylindrical body with the possibility of protection against hydroabrasive wear, the separators are equipped with open radial blades, and a gas-liquid blade rectifier is installed between the screw and separators mixture, each blade of which is perpendicular to its corresponding plane parallel to the axis of the gas separator shaft.

Description

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GAS SEPARATOR OF A CENTRIFUGAL PUMP FOR PRODUCTION FROM SCUBAJ

The utility model relates to the field of pump engineering and can be used in gas separators of centrifugal pumps for oil production from wells.

The gas separator of a centrifugal pump for producing & 1 oil from wells is widely known, including a cylindrical body and mounted on a shaft, one or more centrifugal vane separators, one or more centrifugal wheels and guide vanes, and an auger for moving a gas-liquid mixture (I, 2).

The disadvantages of the known gas separator include:

-protection of the inner surface of the cylindrical body from hydroabrasive wear under the action of the rotating oroids;

- the presence of 1l, e of a cylindrical drum on separators, significantly increasing their mass and, as a result, centrifugal forces exerted on radial bearings of the gas separator shaft;

- there is an annular undercut under the retaining ring on the inner surface of the gas separator housing, causing the housing to break during operation of the gas separator;

-the presence of an additional separating unit, significantly complicating the design of the gas separator.

The essence of this useful lodge is to protect the casing from hydroabrasive wear, to compress the loads on the radial bearings of the gas separator shaft, to exclude the centrifugal stage (impeller and guiding apparatus) and to simplify the general operation.

Object - a utility model for me - E 21 in 43/38

These tasks are achieved by the fact that a sleeve is installed in the cylindrical body with the possibility of protecting it from water-jet abrasion, the separators are equipped with OTKPHTHIVJK radial blades, and a blade straightener of the gas-liquid mixture flow is installed on the screw and separators, each blade of which is perpendicular to the axis of the .

The essence of the pre-laid gas separator of a centrifugal pump for oil production from wells is illustrated by a drawing on one sheet, where in Fig. 1 a general view of the pump is shown, and in Fig. 2 - gas separator design.

The proposed pump (.) Is lowered into well I on pipes 2 and includes an upper pump module 3, a lower pump module 4 and a gas separator module 5. A cylindrical housing b, a shaft 7, several centrifugal vane separators 8 and a screw 9 for moving gas-liquid are installed in the gas separator 5 mixtures. Between the separator 8 and the screw 9 there is installed a blade rectifier for the flow of gas-liquid mixture 10. The separators 8 and the flow straightener 10 are equipped with open blades, each of which is directed perpendicular to its plane parallel to the axis of the shaft 7 of the gas separator 5. A sleeve II is installed in the housing 6, which protects the inner surface 12 6 against waterjet wear. The shaft 7 of the gas separator 5 rotates in the upper 13 PI lower 14 radial bearings. In the upper part of the housing 6, the head 15 forms an outer 16 and an inner 17 annular chambers and is provided with channels 18 and 19, connecting, respectively, the outer chamber 16 with the cavity 20 of the head 15 and the inner chamber 17 with the environment 21. The gas-liquid mixture enters the gas separator 5 along channel 22 of the base 23 (the direction of movement of the gas-liquid mixture is indicated by arrow 24). Axial forces acting are perceived by the persistent support 25. The pump is driven by immersion motor 26.

The proposed gas separator of a centrifugal pump for oil production from wells works as follows. Gas: No. dye mixture through channel 22 base 23 enters B gas separator 5 to screw 9, which creates a certain pressure for the mixed gas and gas mixture inside the gas separator 5. Rectifier 10 provides shock-free flow inlet to the separator blades 8. Under the action of centrifugal forces created by separators 8, the gas-liquid mixture is separated into Liquid and gas (times that in the upper part of the case b fall into the outer 16 and inner 17 of the chamber, respectively. From the outside of the slurry 16, the solid phase passes through channels 18 into the cavity 20, which communicates I nasosnshl lower module 4. The gas phase from the inner chamber 17 to kanalai 19 is released into the environment 21 (the gas phase of the movement direction is indicated strelkaguZh 27).

The proposed construction will protect the inner surface 12 of the housing 6 of the gas separator 5 from hydroabrasive wear, and the radial bearings 13 and 14 of the shaft 7 from additional radial load and increase the reliability of the gas separators of centrifugal pumps for oil extraction from wells, eliminating the centrifugal stage and improve, therefore, the suction capacity of gas separators. The proposed design is simpler and more convenient for manufacture and operation.

Sources of information:

1.Aut.Certificate of the USSR 1z II61694, class E21 B 43/38, 1982.

2. Modules pump-gas separators MPG and ShGK, TU26 06-1416-84, M., 1984.

Claims (1)

Gas separator of a centrifugal pump for oil production from wells, including a cylindrical body and one or more centrifugal vane separators mounted on the shaft, one or more centrifugal wheels and guide vanes and a screw for moving the gas-liquid mixture, characterized in that a sleeve is installed in the cylindrical body with the possibility of protection against hydroabrasive wear, the separators are equipped with open radial blades, and a gas-liquid blade rectifier is installed between the screw and separators mixture, each blade of which is perpendicular to its corresponding plane parallel to the axis of the gas separator shaft.