Device and method for measuring, regulating and controlling liquid content of separated gas phase in centrifugal separator

Abstract

The invention provides a device and method for measuring, regulating and controlling the liquid content of a separated gas phase in a centrifugal separator, and belongs to the technical field of gas-liquid two-phase flow measurement. The device comprises the centrifugal separator, a separated gas phase outlet of the centrifugal separator is connected with a gas-liquid separation metering bottle through a gas phase outlet regulating valve, and the gas phase outlet regulating valve is connected with the gas-liquid separation metering bottle; a liquid phase outlet of the metering bottle is connected with a waste liquid recovery pipeline through an electric drain valve, a gas phase outlet of the gas-liquid separation metering bottle is connected with an inlet of the inverted water tank through a pipeline, and the inverted water tank is used for measuring the gas phase volume; a gas phase outlet of the gas-liquid separation metering bottle is connected with an inlet of the inverted water tank through a pipeline, the inverted water tank is placed in the acrylic water tank, and when the gas phase volume is measured, gas entering the inverted water tank discharges water in the water tank to the acrylic water tank. The implementation of closed-loop control ensures that the separator continuously operates in an efficient and stable flow state, so that the gas-liquid separation efficiency is remarkably improved, the system operation energy consumption is reduced, and the equipment damage risk caused by flow state instability is reduced to the maximum extent.

Description

Technical Field

[0001] This invention belongs to the field of gas-liquid two-phase flow measurement technology, specifically relating to a device and method for measuring and controlling the liquid content of the separated gas phase in a centrifugal separator. Background Technology

[0002] Centrifugal separation technology, with its highly efficient phase separation capabilities, is widely used in the nuclear energy and oil and gas industries. Compared with gravity separators, centrifugal separators have advantages such as larger throughput and suitability for higher gas-liquid flow rates. However, gas-liquid interface instability can induce large-amplitude interface waves, whose shearing effect causes some liquid phase to re-enter the gas core, reducing the separation efficiency. To quantify the liquid content in the separated gas phase, it is necessary to accurately measure the liquid content in the separated gas phase at different outlets.

[0003] Because many factors influence liquid entrainment, and some of these factors have complex coupling relationships, experimental methods are often required to ultimately determine the liquid entrainment rate of the separator. Currently, there are numerous experimental studies on gas-liquid separation, and some gas-liquid separation experimental devices are disclosed in patents and literature. However, these studies mainly focus on separation efficiency, and research on measuring the liquid content in the separated gas phase is still very lacking. Due to the differences in density, conductivity, and other physical properties between the gas and liquid phases, it is difficult to directly measure the independent gas and liquid flow rates in a gas-liquid mixture. Therefore, there is an urgent need to develop a non-invasive, high-precision online direct measurement scheme for the entrainment rate to quantify the liquid content in the separated gas phase. Traditional measurement methods rely on manual readings, which suffer from cumbersome operation, intermittent measurement, and inability to control in real time. Especially under dynamic operating conditions, manually adjusting valves is difficult to respond quickly to changes in the entrainment rate, leading to fluctuations in separation efficiency. The lack of synchronous high-precision monitoring methods for the entrainment rate makes it impossible to feed the measurement signal back to the valve or pressure control system in real time, making it difficult to maintain efficient separation and providing early warning of flow instability. In summary, existing technologies have not yet solved the technical challenge of integrating online measurement of separator entrainment rate with closed-loop control of separation effect. Summary of the Invention

[0004] The purpose of this invention is to provide a device and method for measuring and controlling the liquid content of the separated gas phase in a centrifugal separator, thereby solving the technical problem that existing technologies cannot accurately measure the entrainment rate of the gas phase outlet of the separator online and perform real-time closed-loop control.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A device for measuring and controlling the liquid content of a separated gas phase in a centrifuge includes: a centrifuge, wherein the gas phase outlet of the centrifuge is connected to a gas-liquid separation metering bottle via a gas phase outlet regulating valve, the liquid phase outlet of the metering bottle is connected to a waste liquid recovery pipeline via an electric drain valve, the gas phase outlet of the gas-liquid separation metering bottle is connected to the inlet of an inverted water tank via a pipeline, the inverted water tank being used to measure the gas phase volume; the gas phase outlet of the gas-liquid separation metering bottle is connected to the inlet of the inverted water tank via a pipeline, the inverted water tank being placed inside an acrylic water tank, and when measuring the gas phase volume, the gas entering the inverted water tank discharges the water in the water tank into the acrylic water tank.

[0007] Furthermore, a laser level sensor is vertically installed on the top of the inverted water tank. The laser level sensor beam is aligned with the liquid surface to monitor the liquid level height H in the inverted water tank in real time with high precision.

[0008] Furthermore, a capacitive level gauge is installed on the outer wall of the gas-liquid separation metering bottle for automatically and continuously monitoring and recording the water level rise value Δh.

[0009] Furthermore, an electric vent valve is installed on the top of the inverted water tank.

[0010] Furthermore, the laser level sensor, the capacitive level gauge, the gas phase outlet regulating valve, the electric drain valve, and the electric exhaust valve are respectively connected to the programmable logic controller of the control system, and the programmable logic controller is connected to a computer.

[0011] The present invention may also include:

[0012] A method for measuring and controlling the liquid content of a separated gas phase in a centrifuge, using the aforementioned apparatus, the method comprising:

[0013] The measurement command is initiated by the computer or the control panel of the programmable logic controller, and the parameters are set. After receiving the command, the programmable logic controller opens the gas phase outlet regulating valve and adjusts its opening to the preset initial value. The separated gas phase at the gas phase outlet of the centrifugal separator begins to flow into the gas-liquid separation metering bottle.

[0014] Inside the gas-liquid separation metering bottle, the gas-liquid mixture separates into phases by gravity: the liquid phase settles to the bottom of the bottle, and the separated gas phase flows out from the top into the inverted water tank.

[0015] Start the internal timer and simultaneously begin high-frequency acquisition and recording of the real-time liquid level height signal from the laser level sensor. Real-time water level change signal from capacitive level gauge Continuously perform precise, timed measurements;

[0016] Entrainment rate η calculation: During the measurement process, the programmable logic controller continuously and in real time acquires the liquid level height signal in the inverted water tank. Water level change signal in gas-liquid separation metering bottle The current entrainment rate η(t) is calculated and updated in real time.

[0017] The programmable logic controller transmits the calculation result η(t) to the computer for display and storage;

[0018] If the rate η(t) > η max The programmable logic controller outputs a signal to linearly reduce the opening command of the gas phase outlet regulating valve, thereby reducing the outlet flow rate to decrease droplet entrainment. This regulation continues until the rate η(t) falls back to η max the following;

[0019] After the calculation is completed, the programmable logic controller closes the gas phase outlet regulating valve and stops the working fluid from being drawn out;

[0020] Open the electric drain valve to discharge the residual liquid phase in the gas-liquid separation metering bottle to the waste liquid recovery pipeline. At the same time, open the electric exhaust valve. After emptying, close the electric exhaust valve and the electric drain valve.

[0021] The programmable logic controller performs sensor zero-point calibration and sends a reset completion and system ready signal back to the computer to start the next measurement.

[0022] Furthermore, the measurement duration of the timed measurement is set to 60 ± 0.5 seconds to balance measurement error and gas phase escape effect, ensuring the liquid volume of the metering bottle. The gas phase volume of the inverted water tank The measurement error is less than 1%.

[0023] Furthermore, the current entrainment rate η(t) is calculated and updated in real time.

[0024]

[0025] in, The change in water level and volume in the gas-liquid separation metering bottle. The change in water level and volume in the inverted water tank is represented by d1, where d1 is the side length of the inverted water tank and d2 is the diameter of the gas-liquid separation metering bottle.

[0026] The beneficial effects of this invention are as follows:

[0027] This invention enables automatic drainage and venting after measurement, supporting continuous cyclic experiments. Based on the liquid content signal, it adjusts the valve opening and system pressure in real time to optimize separation efficiency. It integrates a gravity-driven stratified phase separation metering device, a high-precision automatic liquid level sensing unit, and a closed-loop control unit based on real-time feedback of entrainment rate. The three work together to solve the technical bottleneck of traditional methods that cannot directly measure the gas phase entrainment rate online with high precision and rely on this measurement value for real-time control.

[0028] This invention enables independent, high-precision online measurement of the liquid entrainment rate at the gas phase outlet. By incorporating a pneumatic regulating valve, a gas-liquid separation metering bottle, and an automatic liquid level sensing unit (laser sensor, capacitive level gauge) at the gas phase outlet, it achieves high-precision, online, and direct measurement of the liquid entrainment rate η under different inlet gas content conditions during actual centrifugal separator operation. This provides a direct and reliable experimental data basis for quantifying the differences in separation characteristics under different operating conditions and their impact on overall separation performance.

[0029] This invention achieves non-invasive online measurement to ensure data authenticity. It employs a laser level sensor for non-contact measurement of the liquid level in an inverted water tank and a capacitive level gauge for external measurement of the water level change in the gas-liquid separation metering bottle, completely avoiding the disturbance to the internal flow field (especially the gas phase core structure) of the separator caused by traditional immersion probes. This non-invasive measurement method ensures that the acquired entrainment rate η data accurately reflects the actual flow state inside the separator, providing a reliable guarantee for the study of precision separation processes, mechanism elucidation, and operational optimization.

[0030] This invention significantly improves separation performance and operational stability through closed-loop control based on real-time entrainment rate feedback. The PLC controller (7) executes a closed-loop control strategy based on the real-time measured entrainment rate η (dynamically adjusting the opening of the corresponding gas phase outlet regulating valve to optimize the outlet flow rate). This system can stabilize the separator outlet entrainment rate η at a set low level in real time (e.g., η < 5%), effectively suppressing fluctuations in separation efficiency. The implementation of closed-loop control ensures that the separator operates continuously in a highly efficient and stable flow state, thereby significantly improving gas-liquid separation efficiency, reducing system operating energy consumption, minimizing the risk of equipment damage caused by flow instability, ensuring long-term reliable operation, and bringing direct economic benefits.

[0031] This invention identifies flow regime transition critical points based on high-precision entrainment rate data. Real-time, high-precision online measurement of the entrainment rate η (thanks to the high resolution of the laser sensor and capacitive level gauge, and the rapid processing of the PLC) can sensitively capture transient abnormal fluctuations in the entrainment rate η in the swirling flow field. These fluctuations are closely related to gas phase core instability and flow regime transition critical points. Therefore, the η data stream provides a novel, direct, and effective technical means for real-time monitoring of separator operation and early warning of impending flow regime instability (such as severe pulsation and flooding risks).

[0032] This invention offers advantages in compact modularity and automated operation: First, its compact modular design facilitates integration: the core components of the measuring device are integrated with a modular layout, resulting in a compact overall structure that can be easily bypassed and installed on the LPO outlet pipeline of the centrifuge, significantly saving installation space and floor area. Second, automation ensures efficient and reliable measurement: the integrated automatic drainage (valve), venting (valve), and drainage units, under unified PLC control, enable rapid reset of the measuring system, supporting high-frequency repetitive measurements within a short time. Full-process automation (liquid level sensing, data acquisition, valve control, system reset) minimizes human reading errors and operational inconsistencies, significantly improving the reliability, repeatability, and overall efficiency of measurement data. Attached Figure Description

[0033] Appendix Figure 1 This is a schematic diagram of the structure of the present invention;

[0034] Appendix Figure 2 This is the control flowchart of the present invention.

[0035] In the attached diagram: 1. Centrifuge, 2. Separated gas phase outlet, 3. Gas phase outlet regulating valve, 4. Gas-liquid separation metering bottle, 5. Pneumatic drain valve, 6. Capacitive level gauge, 7. Programmable logic controller, 8. Computer, 9. Acrylic water tank, 10. Inverted water tank, 11. Laser level sensor, 12. Electric exhaust valve. Detailed Implementation

[0036] The present invention will now be further described with reference to the accompanying drawings.

[0037] This invention provides a device for measuring and controlling the liquid content of the separated gas phase in a centrifuge, as shown in the attached figure. Figure 1 As shown, the system includes: a centrifuge 1, whose gas phase outlet 2 is connected to a gas-liquid separation metering bottle 4 via a gas phase outlet regulating valve 3; the liquid phase outlet of the metering bottle 11 is connected to a waste liquid recovery pipeline via a pneumatic drain valve 5; the gas phase outlet of the gas-liquid separation metering bottle 4 is connected to the inlet of an inverted water tank 10 via a pipeline; the inverted water tank 10 is used to measure the gas phase volume; the gas phase outlet of the gas-liquid separation metering bottle 4 is connected to the inlet of the inverted water tank 10 via a pipeline; the inverted water tank 10 is placed inside an acrylic water tank 9; when measuring the gas phase volume, the gas entering the inverted water tank 10 discharges the water in the tank into the acrylic water tank 9; the water level drop height Δh is read by a level gauge 6; and the gas phase volume V can be calculated by combining this with the cross-sectional area of ​​the water tank. gas .

[0038] After the measurement is completed, the exhaust valve 12 is used to reset the water level and balance the water levels of the acrylic water tank 9 and the inverted water tank 10.

[0039] In this embodiment, the centrifuge 1 is the core separation device, having a gas phase inlet, a liquid phase outlet, and a separated gas phase outlet 2. After the flow rate is regulated by the gas phase regulating valve 3, the outlet is connected to the gas phase inlet of the gas-liquid separation metering bottle 4. The liquid phase outlet of the gas-liquid separation metering bottle 4 is connected to a waste liquid recovery pipeline via a pipeline for collecting the separated liquid phase. The gas phase outlet of the gas-liquid separation metering bottle 4 is connected to the inlet of the inverted water tank 10 via a pipeline. The inlet is located at the bottom of the inverted water tank 10, which is used for accurate measurement of the gas phase volume using the water displacement and gas collection method. The acrylic water tank 9 is located directly below the inverted water tank 10 and is used to receive and store the water discharged from the inverted water tank 10.

[0040] Preferably, the inverted water tank 10 is a cube.

[0041] Furthermore, it features an automatic liquid level sensing unit:

[0042] A laser level sensor 11 is vertically mounted on the top of the inverted water tank 10, with its beam aligned with the liquid surface for real-time, high-precision monitoring of the liquid level height H within the inverted water tank 10. This level signal is transmitted to the control system, and the gas volume V is calculated in real-time based on the tank's geometric parameters. gas This enables automatic, continuous, and precise online measurement of gas volume.

[0043] A capacitive level gauge 6 is installed on the outer wall of the gas-liquid separation metering bottle 4 to automatically and continuously monitor and record the water level rise value Δh. This Δh signal is transmitted to the control system, and the liquid volume V is calculated in real time based on the known cross-sectional area of ​​the metering bottle. liq This enables automatic online precise measurement of liquid phase volume.

[0044] Furthermore, it features an automatic drainage and ventilation unit:

[0045] A pneumatic drain valve 5 is added to the bottom of the gas-liquid separation metering bottle 4, with its outlet connected to the waste liquid recovery pipeline for automatic discharge of the liquid phase inside the bottle under the command of the control system. An electric vent valve 12 is installed on the top of the inverted water tank 10. This electric vent valve 12 and the electric drain valve 5 operate in conjunction with each other under the command of the control system. The main function of the electric vent valve 12 is to be used when the system is reset (in preparation for the next measurement). When it is necessary to reset the inverted water tank 10 to a full state: close the gas phase inlet valve and open the electric vent valve 12 and the electric drain valve 5.

[0046] The gas phase outlet regulating valve 3, the electric drain valve 5, and the electric exhaust valve 12 are all uniformly controlled and driven by a programmable logic controller (PLC). The core function of the PLC 7 is to receive signals from various sensors (liquid level, pressure, etc.), execute preset control logic algorithms, and output control signals to drive the valves to open and close. It receives signals from various sensors (such as the liquid level signal from the laser liquid level sensor 11 and the water level change signal from the capacitive liquid level gauge 6) and outputs control signals to drive the valve actuator to control the opening degree of the gas phase outlet regulating valve.

[0047] Furthermore, it has a closed-loop feedback control unit.

[0048] The programmable logic controller 7 calculates the current entrainment rate η in real time. When η exceeds a preset threshold (e.g., 5%), the following control strategy is automatically executed: the opening of the pneumatic regulating valve at the outlet with the corresponding entrainment rate exceeding the limit is reduced to decrease the gas phase flow rate at that outlet, reduce the amount of droplets entrained, and thus improve the overall separation effect.

[0049] In this embodiment, the computer 8 is connected to the programmable logic controller 7 through a communication interface for parameter setting, real-time data display, historical data storage, and system status monitoring.

[0050] This invention also provides a method for measuring and controlling the liquid content of the separated gas phase in a centrifuge, using the aforementioned apparatus, as shown in the attached diagram. Figure 2 As shown, the method includes:

[0051] The measurement command is initiated by the control panel of the computer 8 or the programmable logic controller 7, and the parameters are set. After receiving the command, the programmable logic controller 7 opens the gas phase outlet regulating valve 3 and adjusts its opening to the preset initial value. The separated gas phase of the separated gas phase outlet 2 of the centrifugal separator 1 begins to flow into the gas-liquid separation metering bottle 4.

[0052] Inside the gas-liquid separation metering bottle 4, the gas-liquid mixture separates into phases by gravity: the liquid phase settles to the bottom of the bottle, and the separated gas phase flows out from the top and enters the inverted water tank 10.

[0053] Start the internal timer and simultaneously begin high-frequency acquisition and recording of the real-time liquid level height signal from the laser level sensor. ,

[0054] Real-time water level change signal of capacitive level gauge 6 Continuous and precise timed measurements are performed, with the measurement duration set at 60 ± 0.5 seconds to balance measurement errors and gas phase escape effects, ensuring the liquid phase volume of gas-liquid separation metering bottle 4. The gas phase volume of the inverted water tank 10 Measurement error less than 1%;

[0055] Entrainment rate η calculation: During the measurement process, the programmable logic controller 7 continuously and in real time acquires the liquid level height signal in the inverted water tank. The water level change signal in the gas-liquid separation metering bottle (4) The current entrainment rate η(t) is calculated and updated in real time.

[0056]

[0057] in, The change in water level and volume in gas-liquid separation metering bottle 4. The change in water level and volume of the inverted water tank 10 is given by d1, where d1 is the side length of the inverted water tank (10) and d2 is the diameter of the gas-liquid separation metering bottle 4.

[0058] The programmable logic controller 7 transmits the calculation result η(t) to the computer 8 for display and storage;

[0059] If η(t) > η max The programmable logic controller 7 outputs a signal to linearly reduce the opening command of the gas phase outlet regulating valve 3 (by a preset rate, such as 5% / second), thereby reducing the outlet flow rate to decrease droplet entrainment. This regulation continues until η(t) falls back to η max The following are the effects of the control: dynamically maintaining the efficient and stable operation of separator 1, improving separation efficiency (η<5%), suppressing fluctuations, reducing energy consumption, and reducing the risk of equipment damage.

[0060] After the calculation is completed, the programmable logic controller 7 closes the gas phase outlet regulating valve 3 and stops the working fluid from being drawn out;

[0061] Open the electric drain valve 5 to discharge the residual liquid phase in the gas-liquid separation metering bottle 4 to the waste liquid recovery pipeline. At the same time, open the electric exhaust valve 12. After emptying, close the electric exhaust valve 12 and the electric drain valve 5.

[0062] The programmable logic controller 7 performs sensor zero-point calibration and sends a reset completion and system ready signal to the computer 8 to start the next measurement.

[0063] This invention integrates a gravity-based stratified phase metering device, a high-precision automatic liquid level sensing unit, and a closed-loop control unit based on real-time feedback of entrainment rate. The three work together to solve the technical bottleneck of traditional methods that cannot directly measure the gas phase entrainment rate online with high precision and rely on this measurement value for real-time control.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for measuring and regulating the liquid content of a gas phase separated in a centrifugal separator, characterized in that Comprising: A centrifugal separator (1), the separation gas phase outlet (2) of the centrifugal separator (1) is connected with a gas-liquid separation measuring cylinder (4) through a gas phase outlet regulating valve (3), the liquid phase outlet of the gas-liquid separation measuring cylinder (11) is connected with a waste liquid recovery pipeline through an electric liquid discharge valve (5), the gas phase outlet of the gas-liquid separation measuring cylinder (4) is connected with the inlet of an inverted water tank (10) through a pipeline, the inverted water tank (10) is used for measuring the gas phase volume; the gas phase outlet of the gas-liquid separation measuring cylinder (4) is connected with the inlet of an inverted water tank (10) through a pipeline, the inverted water tank (10) is placed inside an acrylic water tank (9), when measuring the gas phase volume, the gas entering the inverted water tank (10) will discharge the water in the water tank to the acrylic water tank (9).

2. A device for measuring and regulating the liquid content of a gas phase separated in a centrifugal separator according to claim 1, characterized in that A laser liquid level sensor (11) is vertically installed on the top of the inverted water tank (10), the light beam of the laser liquid level sensor (11) is aimed at the liquid surface, which is used for real-time high-precision monitoring of the liquid level height H in the inverted water tank (10).

3. A device for measuring and regulating the liquid content of a gas phase separated in a centrifugal separator according to claim 2, characterized in that A capacitive liquid level meter (6) is installed on the outer wall of the gas-liquid separation measuring cylinder (4), which is used for automatic, continuous monitoring and recording of the water level rising value Δh.

4. A device for measuring and regulating the liquid content of a gas phase separated in a centrifugal separator according to claim 3, characterized in that An electric exhaust valve (12) is installed on the top of the inverted water tank (10).

5. A device for measuring and regulating the liquid content of a gas phase separated in a centrifugal separator according to claim 4, characterized in that The laser liquid level sensor (11), the capacitive liquid level meter (6), the gas phase outlet regulating valve (3), the electric liquid discharge valve (5), and the electric exhaust valve (12) are respectively connected with a programmable logic controller (7) of a control system, and the programmable logic controller (7) is connected with a computer (8).

6. A method of measuring and regulating liquid loading in a gas phase in a centrifugal separator, characterized by The method comprises: Starting a measurement instruction through a control panel of the computer (8) or the programmable logic controller (7), setting parameters, after the programmable logic controller (7) receives the instruction, opening the gas phase outlet regulating valve (3) and adjusting its opening degree to a preset initial value, and the separated gas phase of the separation gas phase outlet (2) of the centrifugal separator (1) starts to flow into the gas-liquid separation measuring cylinder (4); In the gas-liquid separation measuring cylinder (4), the gas-liquid mixture is separated by gravity: the liquid phase settles at the bottom, and the separated gas phase flows out from the top into the inverted water tank (10); Start internal timer and synchronize start of high frequency acquisition recording: Laser liquid level sensor real time liquid level height signal , Capacitance liquid level gauge (6) real-time water level change signal , continue to make accurate timing measurements; Carrying rate η calculation: During the measurement process, the programmable logic controller (7) continuously collects the liquid level signal in the inverted water tank in real time and the water level change signal in the gas-liquid separation measuring bottle (4) , real-time calculation and update the current carrying rate η (t); The programmable logic controller (7) transmits the calculation result η(t) to the computer (8) for display and storage; If η(t) > η max , the programmable logic controller (7) outputs a signal that linearly decreases the opening command of the vapor outlet regulating valve (3), reducing the outlet flow rate to reduce droplet entrainment, regulating until η(t) falls back to η max below. After the calculation is completed, the programmable logic controller (7) closes the gas phase outlet regulating valve (3) and stops the working medium from being drawn out; Opening the electric liquid discharge valve (5) to discharge the residual liquid phase in the gas-liquid separation measuring cylinder (4) to the waste liquid recovery pipeline, and opening the electric exhaust valve (12) at the same time, closing the electric exhaust valve (12) and the electric liquid discharge valve (5) after emptying; The programmable logic controller (7) performs sensor zero point calibration and feeds back a reset completion and system readiness signal to the computer (8) to start the next measurement.

7. The method of claim 6, wherein the method further comprises: determining a liquid loading of the gas phase in the centrifugal separator; and adjusting the flow rate of the liquid to the centrifugal separator based on the determined liquid loading of the gas phase in the centrifugal separator. The measurement duration of the timing measurement is set to 60 ± 0.5 seconds to balance the measurement error and the gas phase escape effect, ensuring the liquid phase volume of the gas-liquid separation measuring cylinder (4) and the gas phase volume of the inverted water tank (10) The measurement error is less than 1%.

8. The method of claim 7, wherein the method further comprises: determining a liquid loading of the gas phase in the centrifugal separator; and adjusting the flow rate of the liquid to the centrifugal separator based on the determined liquid loading of the gas phase in the centrifugal separator. Real-time calculation and updating of the current entrainment rate η(t), wherein, is the change of water level volume of the gas-liquid separation measuring cylinder (4), is the change of water level volume of the inverted water tank (10), d1 is the side length of the inverted water tank (10), and d2 is the diameter of the gas-liquid separation measuring cylinder (4).

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