Efficient submersible oil separator

Abstract

The utility model relates to the field of submersible separators, and discloses an efficient submersible separator which comprises a shell, a separation guide shell is installed in the shell, a rotating shaft is installed in the separation guide shell, a turbine is installed in the middle of the rotating shaft, a flow guide shell is installed in the shell, and an inducer is installed on the right side of the rotating shaft. A support is installed on the right side of the shell. According to the utility model, through the cooperation of the inducer, the flow guide shell and the turbine, the separation efficiency is improved, the gas content of liquid flowing into the oil-submerged pump is reduced, the pump performance is improved, and when the gas content of underground liquid is suddenly increased, the device can reduce the gas flowing into the pump and reduce the possibility of airlock; the device can crush small bubbles with collapse impact into microbubbles with smaller sizes, can also form a stable vortex, promotes separation of liquid and the small bubbles, gathers the small bubbles in a vortex central area, and discharges the small bubbles out of the separator along an exhaust port in the top of the separator.

Description

Technical Field

[0001] This utility model relates to the field of submersible oil separators, and in particular to a high-efficiency submersible oil separator. Background Technology

[0002] A submersible oil separator is an important piece of equipment used in oil extraction. It is primarily used to separate crude oil and associated gas produced from oil wells, discharging the gas from the separator and sending the crude oil from the outlet to the next stage of equipment. Its working principle involves rotating components that drive the two-phase flow of crude oil and associated gas to rotate rapidly. Under centrifugal force, the gas and liquid separate due to their different densities.

[0003] However, traditional submersible pump separators have low separation efficiency, only 60%~75%. When gas enters the submersible pump, the pump head and efficiency decrease. When the gas content in the downhole liquid increases sharply, gas-liquid separation is not timely, and gas enters the downstream submersible pump, increasing the risk of gas lock. Small air bubbles entering the submersible pump can also cause bubble collapse, impacting metal parts and reducing the service life of the unit. Therefore, a high-efficiency submersible separator is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-efficiency submersible oil separator, aiming to improve the low separation efficiency of traditional submersible electric pump separators, which is only 60%~75%. When gas enters the submersible pump, the pump head and efficiency decrease. When the gas content in the downhole liquid increases sharply, gas-liquid separation is not timely, and gas enters the downstream submersible pump, increasing the risk of gas lock. Small air bubbles entering the submersible pump can also cause bubble collapse, impacting metal parts and reducing the unit's service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency submersible oil separator, comprising a housing, a separation guide shell installed inside the housing, a rotating shaft installed inside the separation guide shell, a turbine installed in the middle of the rotating shaft, a flow guide shell installed inside the housing, an inducer wheel installed on the right side of the rotating shaft, and a bracket installed on the right side of the housing.

[0006] As a further description of the above technical solution:

[0007] An annular cavity is provided between the separation guide shell and the turbine.

[0008] As a further description of the above technical solution:

[0009] The rotating shaft is installed inside the housing.

[0010] As a further description of the above technical solution:

[0011] The turbine is fixedly connected to the rotating shaft.

[0012] As a further description of the above technical solution:

[0013] The flow guide shell is installed inside the outer shell.

[0014] As a further description of the above technical solution:

[0015] The inducer wheel is installed inside the housing.

[0016] As a further description of the above technical solution:

[0017] The bracket is installed at the lower connector.

[0018] As a further description of the above technical solution:

[0019] The separation guide shell separates the gas and liquid and also serves as a support.

[0020] This utility model has the following beneficial effects:

[0021] In this invention, the combination of the inducer, guide shell, and turbine improves separation efficiency, reduces the gas content in the liquid flowing into the submersible pump, and enhances pump performance. Furthermore, when the gas content in the downhole liquid increases sharply, this device can reduce the gas flowing into the pump, thus reducing the possibility of gas lock. This device can also break small bubbles that have collapsed into smaller microbubbles and form a stable vortex, promoting the separation of liquid and small bubbles. The small bubbles are then gathered in the center of the vortex and discharged from the separator through the exhaust port at the top of the separator. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a high-efficiency submersible oil separator proposed in this utility model.

[0023] Legend:

[0024] 1. Outer shell; 2. Separation guide shell; 3. Rotating shaft; 4. Turbine; 5. Flow guide shell; 6. Inducer wheel; 7. Support; 8. Annular tube cavity. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1This utility model provides an embodiment of a high-efficiency submersible oil separator, comprising a housing 1, a separation guide shell 2 installed inside the housing 1, a rotating shaft 3 installed inside the separation guide shell 2, a turbine 4 installed in the middle of the rotating shaft 3, a flow guide shell 5 installed inside the housing 1, an inducer wheel 6 installed on the right side of the rotating shaft 3, and a bracket 7 installed on the right side of the housing 1. The housing 1 is used to connect and protect the internal parts, the separation guide shell 2 is used to support the rotating shaft 3, keeping the rotating shaft 3 stable, and also to guide the liquid. The rotating shaft 3 is used to drive the turbine 4 and the inducer wheel 6 to rotate. The turbine 4 is used to further separate microbubbles from the liquid, and the flow guide shell 5 is used to reduce turbulent pulsation and cause bubbles to gather towards the center of rotation. The guide vanes of the flow guide shell 5 have... With a fixed placement angle, the inducer 6 reduces the axial propulsion rate of the fluid by increasing the blade lead. An annular cavity 8 is provided between the separation guide shell 2 and the turbine 4 to reduce the flow velocity and stabilize the flow field. The rotating shaft 3 is installed inside the outer shell 1 to keep the rotating shaft 3 stable. The turbine 4 is fixedly connected to the rotating shaft 3 to keep the turbine 4 stable. The guide shell 5 is installed inside the outer shell 1 to keep the guide shell 5 stable. The inducer 6 is installed inside the outer shell 1 to keep the inducer 6 stable. The bracket 7 is installed at the lower connector to keep the bracket 7 stable. The lower connector is threadedly fixedly connected to the outer shell 1. The separation guide shell 2 separates the gas and liquid and also serves as a support.

[0027] Working Principle: In this device, the axial propulsion rate of the fluid is reduced by increasing the blade lead of the inducer wheel 6, allowing the gas-containing liquid to rotate fully within the inducer wheel 6. At a unit flow rate, the relative tangential velocity increases, and the centrifugal acceleration increases. Due to the density difference, the gas and liquid experience different forces, causing the liquid to be thrown to the outer periphery and the gas to migrate towards the axis. The guide vanes of the guide shell 5 have a fixed placement angle, which can convert the spiral flow output by the inducer wheel 6 into a quasi-axial laminar flow, reducing turbulent pulsation and causing bubbles to gather towards the center of rotation. At the same time, the low-pressure area on the back of the guide vanes can adsorb microbubbles, causing the bubbles to migrate towards the center of rotation. In conjunction with the rotating turbine 4, the quasi-axial laminar liquid passing through the guide shell 5 undergoes secondary centrifugal acceleration, increasing the liquid head and further separating microbubbles from the liquid. Finally, the flow velocity is reduced through the annular tube cavity 8, stabilizing the flow field and reducing the bubble escape rate, preventing bubbles from entering the pump with the liquid, thereby effectively improving the service life of the device.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high efficiency subsea separator comprising a housing (1), characterised in that: The outer shell (1) is equipped with a separation guide shell (2), the separation guide shell (2) is equipped with a rotating shaft (3), the rotating shaft (3) is equipped with a turbine (4) in the middle, the outer shell (1) is equipped with a flow guide shell (5), the rotating shaft (3) is equipped with an inducer wheel (6) on the right side, and the outer shell (1) is equipped with a bracket (7) on the right side.

2. A high efficiency submersible separator as claimed in claim 1 wherein: An annular cavity (8) is provided between the separation guide shell (2) and the turbine (4).

3. The high efficiency submersible separator of claim 1, wherein: The rotating shaft (3) is installed inside the outer casing (1).

4. The high efficiency submersible separator of claim 1, wherein: The turbine (4) is fixedly connected to the shaft (3).

5. The high efficiency submersible separator of claim 1, wherein: The flow guide shell (5) is installed inside the outer shell (1).

6. The high efficiency submersible separator of claim 1, wherein: The inducer wheel (6) is installed inside the housing (1).

7. The high efficiency submersible separator of claim 1, wherein: The bracket (7) is installed at the lower connector.

8. The high efficiency submersible separator of claim 1, wherein: The separation guide shell (2) separates the gas and liquid and acts as a support.

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