Visual single-stage gas-liquid multiphase pump integrated test bed for optimization verification and test method

Abstract

The invention discloses a visual single-stage gas-liquid multiphase pump integrated test bench for optimization verification, which comprises a test bench body, a motor is fixedly arranged on the test bench body, an output shaft of the motor is sequentially connected with a torque meter, a rotating shaft and a pump shaft of a single-stage gas-liquid multiphase pump, a bearing is mounted on the rotating shaft, and a bearing is mounted on the rotating shaft. A bearing box is fixed to the position, corresponding to the bearing, of the test bed body, a left metal baffle is detachably fixed to the side, close to the single-stage gas-liquid mixed transportation pump, of the bearing box, a right metal baffle is detachably connected to the side, away from the bearing box, of the left metal baffle through a screw, and the single-stage gas-liquid mixed transportation pump is arranged between the left metal baffle and the right metal baffle. The other end of the pump shaft is detachably connected with a guide vane and an impeller in sequence in the direction from the left metal baffle to the right metal baffle. According to the invention, the problem that the test process is tedious due to the fact that a test bench in the prior art cannot carry out repeated tests is solved. The invention further discloses a visual single-stage gas-liquid multiphase pump integrated test method for optimization verification.

Description

Technical Field

[0001] The present invention belongs to the technical field of fluid mechanical equipment, and relates to a visualized single-stage gas-liquid mixed pump integrated test bench for optimization verification. The present invention also relates to a visualized single-stage gas-liquid mixed pump integrated test method for optimization verification. Background Art

[0002] Gas-liquid mixed flow pumps play an important role in the petroleum, chemical and other industries. However, most of the existing test benches lack visualization functions, making it difficult to directly observe the flow state and interaction of gas and liquid in the pump, which creates obstacles for studying the complex flow field mechanism in the pump. For the optimization and verification process of a single-stage gas-liquid mixed flow pump, the existing test benches often require multiple devices to operate in coordination and cannot perform repeated tests, resulting in a cumbersome test process and low accuracy and efficiency in data collection and processing. Therefore, it is crucial to develop a visual single-stage gas-liquid mixed flow pump integrated test bench for optimization and verification. Summary of the invention

[0003] The purpose of the present invention is to provide a visual single-stage gas-liquid mixed pump integrated test bench for optimization and verification, which solves the problem that the test bench in the prior art cannot perform repeated tests, resulting in a cumbersome test process.

[0004] Another object of the present invention is to provide a visual single-stage gas-liquid mixed pump integrated test method for optimization verification.

[0005] The technical solution adopted in the present invention is a visualized single-stage gas-liquid mixed pump integrated test bench for optimization and verification, including a test bench body, a motor is fixedly arranged on the test bench body, the output shaft of the motor is sequentially connected to a torque meter, a rotating shaft, and a pump shaft of the single-stage gas-liquid mixed pump, a bearing is installed on the rotating shaft, a bearing box is fixed at a position corresponding to the bearing on the test bench body, the bearing is installed in the bearing box, a left metal baffle is detachably fixed on a side of the bearing box close to the single-stage gas-liquid mixed pump, a right metal baffle is detachably connected to a side of the left metal baffle away from the bearing box through a screw, the single-stage gas-liquid mixed pump is arranged between the left metal baffle and the right metal baffle, the rotating shaft passes through the left metal baffle and is fixedly connected to the pump shaft, and the other end of the pump shaft is detachably connected to a guide vane and an impeller in sequence from the left metal baffle to the right metal baffle.

[0006] The first technical solution of the present invention is also characterized in that: Both ends of the pump casing of the single-stage gas-liquid mixed flow pump are fixed to the left metal baffle or the right metal baffle on the corresponding side by nuts and bolts. The pump casing of the gas-liquid mixed flow pump is a plexiglass shell with a square shape. The hub and blades of the impeller and guide vane of the single-stage gas-liquid mixed flow pump are black.

[0007] The guide vanes and impeller are mounted on the pump shaft by means of keyed connections.

[0008] A cylindrical and horizontal opening end is connected at the center position of one side of the left metal baffle plate close to the bearing box, the other end of the opening end is fixedly connected to a cylindrical outlet end through nuts and bolts, the other end of the outlet end is fixedly connected to the bearing box through nuts and bolts, and a cylindrical and horizontal opening end A is provided at the center position of the right end of the right metal baffle plate; The outlet end is connected to one end of the bearing box and is in a closed state. The outlet end is located above the side wall of the cylinder and is connected to an arc-shaped outlet with an opening facing upward.

[0009] The opening end A of the right metal baffle is connected to the gas and liquid supply system using a bolt structure, and the arc-shaped outlet is connected to the liquid storage tank.

[0010] A torque meter bracket is arranged on the test bench body, and the torque meter is fixed on the torque meter bracket.

[0011] The left metal baffle and the right metal baffle are both square baffles. The side length L of the baffle is 1.5 times the diameter d2 of the guide vane rim. The impeller includes 4 open blades and the guide vane includes 7 closed blades. The blades of the impeller and the guide vane are evenly distributed around the hub. The pump shaft diameter d3 is 0.3 times the impeller rim diameter d1, and the guide vane is in contact with the inner wall of the pump casing.

[0012] Four universal wheels are evenly installed on the bottom of the test bench body.

[0013] The second technical solution adopted by the present invention is: a visual single-stage gas-liquid mixed pump integrated test method for optimization verification, using the above-mentioned visual single-stage gas-liquid mixed pump integrated test bench for optimization verification, and specifically implemented according to the following steps: Step 1: Install the impeller to be optimized on a visual single-stage gas-liquid mixed pump integrated test bench for optimization verification, and install pressure pulsation measuring points on the inlet and outlet pipes of the pump and the surface of the pump body as required, and transmit the pressure pulsation data of the measuring points to the data acquisition device through the signal line, and set the gas-liquid ratio and flow rate; Step 2, start the motor and the gas-liquid supply system, the gas and liquid enter the inlet end connected to the right metal baffle through the pipeline, and then enter the single-stage gas-liquid mixed transfer pump, and the arc-shaped outlet is connected to the liquid storage tank; Step 3, using a high-speed camera to record the flow state of gas and liquid in the single-stage gas-liquid mixed transmission pump to obtain flow state data; Step 4, optimize the design of the impeller of the single-stage gas-liquid mixed pump according to the flow state data and pressure pulsation data of the single-stage gas-liquid mixed pump. After the optimization is completed, create an optimized model according to the impeller three-dimensional geometric model; then disassemble the right metal baffle and the impeller before optimization, remove the impeller before optimization, replace it with the optimized impeller, and use a key pin to connect it to the pump shaft and fix it to the pump casing, and then perform experimental optimization on the impeller again according to the process of steps 2-4 until the required optimization effect is achieved.

[0014] The optimization of step 4 is as follows: CFD numerical simulation software is used to numerically simulate the flow field inside the gas-liquid mixed transmission pump, the flow state, velocity distribution, pressure distribution of the gas-liquid two-phase and the cause of pressure pulsation are analyzed, and the pump impeller structure is optimized.

[0015] The beneficial effects of the present invention are: The present invention arranges the left metal baffle plate, the right metal baffle plate and the single-stage gas-liquid mixed transmission pump structure. When performing optimization verification tests, it is only necessary to remove the impeller in the pump and replace it with a different impeller to complete the corresponding test, thereby realizing multiple tests under different conditions.

[0016] The pump housing of the present invention is provided with an organic glass shell to achieve visualization. The visualization observation system can intuitively present the flow of gas and liquid in the pump, which provides an important basis for studying the flow field in the pump and optimizing the structure of the pump, and helps to improve the performance and efficiency of the single-stage gas-liquid mixed transport pump.

[0017] The invention has a simple structure and low operation difficulty, is convenient for quickly verifying and comparing the performances of different flow-through components, and can more flexibly perform optimization tests on single-stage gas-liquid mixed transmission pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a visualized single-stage gas-liquid mixed pump integrated test bench for optimization verification of the present invention; Figure 2 It is a schematic diagram of the installation structure of the left metal baffle and the right metal baffle in the visual single-stage gas-liquid mixed pump integrated test bench for optimization verification of the present invention; Figure 3 It is a side view of a left metal baffle or a right metal baffle in a visualized single-stage gas-liquid mixed pump integrated test bench invented for optimization verification; Figure 4 It is a schematic diagram of the installation structure of the guide vanes and the impeller in the integrated test bench of the visualized single-stage gas-liquid mixed pump for optimization verification of the present invention; Figure 5 It is a structural schematic diagram of an impeller in a visual single-stage gas-liquid mixed pump integrated test bench for optimization verification of the present invention; Figure 6 yes Figure 5 Side view of Figure 7a is a front view of the optimized front impeller of Example 7 of the present invention; Figure 7b is a top view of the optimized front impeller of Example 7 of the present invention; Figure 7c is a front view of an optimized impeller according to Example 7 of the present invention; Figure 7d3. It is a top view of the optimized impeller of Example 7 of the present invention.

[0019] In the figure: 1. motor, 2. torque meter, 3. bearing box, 4. impeller, 5. guide vane, 6. left metal baffle, 7. right metal baffle, 8. single-stage gas-liquid mixed pump, 9. pump shaft, 10. opening end, 11. outlet end, 12. opening end A, 13. arc outlet, 14. test bench body. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1 The structure of the visual single-stage gas-liquid mixed pump integrated test bench used for optimization verification is as follows: Figure 1 As shown, it includes a test bench body 14, on which a motor 1 is fixedly arranged, and the output shaft of the motor 1 is connected to a torque meter 2, a rotating shaft, and a pump shaft 9 of a single-stage gas-liquid mixed flow pump 8 in sequence, and a bearing is installed on the rotating shaft. A bearing box 3 is fixed at a position corresponding to the bearing on the test bench body, and the bearing is installed in the bearing box 3. A left metal baffle 6 is detachably fixed on the side of the bearing box 3 close to the single-stage gas-liquid mixed flow pump 8, and a right metal baffle 7 is detachably connected to the side of the left metal baffle 6 away from the bearing box 3 through a screw, and the single-stage gas-liquid mixed flow pump 8 is arranged between the left metal baffle 6 and the right metal baffle 7, and the rotating shaft passes through the left metal baffle 6 and is fixedly connected to the pump shaft 9, and the other end of the pump shaft 9 is detachably connected to a guide vane 5 and an impeller 4 in sequence from the left metal baffle 6 to the right metal baffle 7. When performing the optimization verification test, it is only necessary to remove the impeller in the pump and replace different impellers to complete the corresponding test, thereby realizing multiple tests under different conditions.

[0022] Both ends of the pump casing of the single-stage gas-liquid mixed flow pump 8 are fixed to the left metal baffle 6 or the right metal baffle 7 on the corresponding side by nuts and bolts. The pump casing of the gas-liquid mixed flow pump is a plexiglass shell with a square shape. The hub and blades of the impeller 4 and guide vane 5 of the single-stage gas-liquid mixed flow pump 8 are black.

[0023] The guide vane 5 and the impeller 4 are mounted on the pump shaft 9 by means of key pin connection.

[0024] like Figure 2-3 As shown, a cylindrical and horizontal open end 10 is connected at the center position of one side of the left metal baffle plate 6 close to the bearing box 3, and the other end of the open end 10 is fixedly connected to a cylindrical outlet end 11 by nuts and bolts, and the other end of the outlet end 11 is fixedly connected to the bearing box 3 by nuts and bolts, and a cylindrical and horizontal open end A12 is provided at the center position of the right end of the right metal baffle plate 7; One end of the outlet end 11 connected to the bearing box 3 is in a closed state. The outlet end 11 is located above the side wall of the cylinder and is connected to an arc-shaped outlet 13 with an opening facing upward.

[0025] The opening end A12 of the right metal baffle 7 is connected to the gas-liquid supply system using a bolt structure, and the arc-shaped outlet 13 is fixedly connected to a liquid storage tank by nuts and bolts to collect liquid.

[0026] Example 2 On the basis of Example 1, a torque meter bracket is provided on the test bench body, and the torque meter 2 is fixed on the torque meter bracket.

[0027] Example 3 The structure of the visual single-stage gas-liquid mixed pump integrated test bench used for optimization verification is as follows: Figure 1 As shown, it includes a test bench body, on which a motor 1 is fixedly arranged, the output shaft of the motor 1 is sequentially connected to a torque meter 2, a rotating shaft, and a pump shaft 9 of a single-stage gas-liquid mixed flow pump 8, a bearing is installed on the rotating shaft, a bearing box 3 is fixed at a position corresponding to the bearing on the test bench body, the bearing is installed in the bearing box 3, a left metal baffle 6 is detachably fixed on a side of the bearing box 3 close to the single-stage gas-liquid mixed flow pump 8, a right metal baffle 7 is detachably connected to the side of the left metal baffle 6 away from the bearing box 3 through a screw, the single-stage gas-liquid mixed flow pump 8 is arranged between the left metal baffle 6 and the right metal baffle 7, the rotating shaft passes through the left metal baffle 6 and is fixedly connected to the pump shaft 9, and the other end of the pump shaft 9 is detachably connected to a guide vane 5 and an impeller 4 in sequence from the left metal baffle 6 to the right metal baffle 7.

[0028] Both ends of the pump casing of the single-stage gas-liquid mixed flow pump 8 are fixed to the left metal baffle 6 or the right metal baffle 7 on the corresponding side by nuts and bolts. The pump casing of the gas-liquid mixed flow pump is a plexiglass shell with a square shape. The hub and blades of the impeller 4 and guide vane 5 of the single-stage gas-liquid mixed flow pump 8 are black.

[0029] The guide vane 5 and the impeller 4 are mounted on the pump shaft 9 by means of key pin connection.

[0030] like Figure 2-3 As shown, a cylindrical and horizontal open end 10 is connected at the center position of one side of the left metal baffle plate 6 close to the bearing box 3, and the other end of the open end 10 is fixedly connected to a cylindrical outlet end 11 by nuts and bolts, and the other end of the outlet end 11 is fixedly connected to the bearing box 3 by nuts and bolts, and a cylindrical and horizontal open end A12 is provided at the center position of the right end of the right metal baffle plate 7; One end of the outlet end 11 connected to the bearing box 3 is in a closed state. The outlet end 11 is located above the side wall of the cylinder and is connected to an arc-shaped outlet 13 with an opening facing upward.

[0031] The opening end A12 of the right metal baffle 7 is connected to the gas-liquid supply system by a bolt structure, and the arc-shaped outlet 13 is fixedly connected to the liquid storage tank by nuts and bolts.

[0032] The left metal baffle 6 and the right metal baffle 7 are both square baffles, and the side length L of the baffle is 1.5 times the diameter d2 of the guide vane rim. The impeller 4 includes 4 open blades, and the guide vane 5 includes 7 closed blades. The blades of the impeller 4 and the guide vane 5 are evenly distributed around the hub. The pump shaft diameter d3 is 0.3 times the impeller rim diameter d1, and the guide vane is in contact with the inner wall of the pump casing.

[0033] Example 4 The structure of the visual single-stage gas-liquid mixed pump integrated test bench used for optimization verification is as follows: Figure 1 As shown, it includes a test bench body, on which a motor 1 is fixedly arranged, and the output shaft of the motor 1 is sequentially connected to a torque meter 2, a rotating shaft, and a pump shaft 9 of a single-stage gas-liquid mixed delivery pump 8, and a bearing is installed on the rotating shaft. A bearing box 3 is fixed at a position corresponding to the bearing on the test bench body, and the bearing is installed in the bearing box 3. A left metal baffle 6 is detachably fixed on a side of the bearing box 3 close to the single-stage gas-liquid mixed delivery pump 8, and a right metal baffle 7 is detachably connected to the side of the left metal baffle 6 away from the bearing box 3 through a screw, and the single-stage gas-liquid mixed delivery pump 8 is arranged between the left metal baffle 6 and the right metal baffle 7, and the rotating shaft passes through the left metal baffle 6 and is fixedly connected to the pump shaft 9, as shown in FIG. Figure 4-6 As shown, the other end of the pump shaft 9 is detachably connected with the guide vane 5 and the impeller 4 in the direction from the left metal baffle 6 to the right metal baffle 7. When performing the optimization verification test, it is only necessary to remove the impeller in the pump and replace it with a different impeller to complete the corresponding test, thereby realizing multiple tests under different conditions.

[0034] Both ends of the pump casing of the single-stage gas-liquid mixed pump 8 are fixed to the left metal baffle 6 or the right metal baffle 7 on the corresponding side by a number of symmetrically arranged nuts and bolt structures. The pump casing of the gas-liquid mixed pump is an organic glass shell with a square shape. The hub and blades of the impeller 4 and guide vane 5 of the single-stage gas-liquid mixed pump 8 are black.

[0035] The guide vane 5 and the impeller 4 are mounted on the pump shaft 9 by means of key pin connection.

[0036] like Figure 2-3 As shown, a cylindrical and horizontal opening end 10 is connected at the center position of one side of the left metal baffle plate 6 close to the bearing box 3, and the other end of the opening end 10 is fixedly connected to a cylindrical outlet end 11 through a plurality of symmetrically arranged nuts and bolts, and the other end of the outlet end 11 is fixedly connected to the bearing box 3 through a plurality of symmetrically arranged nuts and bolts, and a cylindrical and horizontal opening end A12 is arranged at the center position of the right end of the right metal baffle plate 7; The outlet end 11 is connected to one end of the bearing box 3 and is in a closed state. The outlet end 11 is located above the side wall of the cylinder and is connected to an arc-shaped outlet 13 with an opening facing upward. The opening end 10 corresponds to the outlet of the single-stage gas-liquid mixed flow pump 8 , and the opening end A12 corresponds to the inlet of the single-stage gas-liquid mixed flow pump 8 . The gas and liquid enter the single-stage gas-liquid mixed flow pump 8 through the opening end A12 and flow out through the opening end 10 .

[0037] The opening end A12 of the right metal baffle 7 is connected to the gas-liquid supply system by a bolt structure, and the arc-shaped outlet 13 is fixedly connected to the liquid storage tank by nuts and bolts.

[0038] The left metal baffle 6 and the right metal baffle 7 are both square baffles, and the side length L of the baffle is 1.5 times the diameter d2 of the guide vane rim. The impeller 4 includes 4 open blades, and the guide vane 5 includes 7 closed blades. The blades of the impeller 4 and the guide vane 5 are evenly distributed around the hub. The pump shaft diameter d3 is 0.3 times the impeller rim diameter d1, and the guide vane is in contact with the inner wall of the pump casing. The inner radius of the opening end 10 and the opening end A12 is d4, and the size of d4 should be the same as the diameter of the connected pipe.

[0039] Four universal wheels are evenly installed on the bottom of the test bench body.

[0040] Example 5 The visual single-stage gas-liquid mixed pump integrated test method for optimization verification adopts the visual single-stage gas-liquid mixed pump integrated test bench for optimization verification in Example 4, and is specifically implemented according to the following steps: Step 1: Install the impeller to be optimized on a visual single-stage gas-liquid mixed pump integrated test bench for optimization verification, and install pressure pulsation measuring points on the inlet and outlet pipes of the pump and the surface of the pump body as required, and transmit the pressure pulsation data of the measuring points to the data acquisition device through the signal line, and set the gas-liquid ratio and flow rate; Step 2, start the motor 1 and the gas-liquid supply system, the gas and liquid respectively enter the inlet end connected to the right metal baffle of the single-stage gas-liquid mixed delivery pump 8 through the pipeline, and the arc-shaped outlet 13 is connected to the liquid storage tank; Step 3, using a high-speed camera to record the flow state of gas and liquid in the single-stage gas-liquid mixed delivery pump 8, and obtain flow state data; setting a lighting device above the single-stage gas-liquid mixed delivery pump 8, adjusting the angle of the high-speed camera and the brightness of the lighting device, so as to clearly capture and observe the flow state of gas and liquid in the pump, such as gas-liquid distribution, bubble size and motion trajectory, and record relevant data; Step 4, optimize the design of the impeller of the single-stage gas-liquid mixed pump according to the flow state data and pressure pulsation data of the single-stage gas-liquid mixed pump, use CFD numerical simulation software to perform numerical simulation on the flow field inside the gas-liquid mixed pump, analyze the flow state, velocity distribution, pressure distribution and cause of pressure pulsation of the gas-liquid two-phase, and then optimize the pump impeller structure. After the optimization is completed, create an optimized model according to the three-dimensional geometric model of the pump impeller; disassemble the right metal baffle 7 and the impeller before optimization, remove the impeller 4 before optimization, and replace it with the optimized impeller to ensure that the relative position of the impeller and the guide vane is accurate during installation, and use a key pin to connect the impeller to the pump shaft and fix it to the pump casing, and then perform experimental optimization on the impeller 4 again according to the process of steps 2-4 until the required optimization effect is achieved.

[0041] Example 6 On the basis of Example 5, four universal wheels with self-locking function are installed at the bottom of the test bench body to facilitate transportation and testing. In order to capture the internal gas-liquid phase flow, the pump shell of the gas-liquid mixed flow pump is made of plexiglass material. In order to avoid the reflection and light refraction during shooting affecting the accuracy of the shooting results, the outer shell of the gas-liquid mixed flow pump is designed as an plexiglass shell, which is square in shape and has a flat shooting surface. In addition, when conducting the optimization and verification test of the flow-through components, different tests can be carried out directly by replacing the flow-through components. In order to distinguish the color of the impeller and guide vane from the color of the gas-liquid two-phase mixed medium and to facilitate viewing the shooting results, the impeller and guide vane hub and blade colors are black during design. The plexiglass shells of the impeller and guide vane are made separately, and then fixed by bolts at both ends, and sealing materials are placed at the joints to prevent leakage.

[0042] On the basis of Example 5, when disassembling the impeller 4, remove the fixing bolts on the right metal baffle 7, remove the right metal baffle 7, expose the single-stage gas-liquid mixed pump 8, remove the key pins on the impeller 4, remove the front optimized impeller 4, replace it with the rear optimized impeller, and use the key pins to connect it to the pump shaft and fix it to the pump casing, connect the left metal baffle 6 and the right metal baffle 7 by the nut and bolt structure, so as to fix the single-stage gas-liquid mixed pump.

[0043] Example 7 On the basis of Example 6, start the motor 1 and the gas-liquid supply system, set the speed to 900 rpm, the test flow rate to 20 m³, the inlet gas content to 5%, and the pump inlet absolute pressure to 0.20 MPa, and conduct a gas-liquid two-phase visualization test. The gas and liquid enter the inlet end of the single-stage gas-liquid mixed pump 8 connected to the right metal baffle through the pipeline respectively, and the outlet end is connected to the liquid storage tank.

[0044] Use a high-speed camera to record the flow state of gas and liquid in the single-stage gas-liquid mixed delivery pump 8 again to obtain new flow state data; set a lighting device above the single-stage gas-liquid mixed delivery pump 8, adjust the angle of the high-speed camera and the brightness of the lighting device, so as to clearly capture and observe the flow state of gas and liquid in the pump, such as gas-liquid distribution, bubble size and movement trajectory, and record relevant data; According to the flow state data and pressure pulsation data of the single-stage gas-liquid mixed pump, the impeller of the two-stage gas-liquid mixed pump is optimized and designed. The flow field inside the gas-liquid mixed pump is numerically simulated using CFD numerical simulation software. The flow state, velocity distribution, pressure distribution and the cause of pressure pulsation of the gas-liquid two-phase are analyzed. The pump impeller structure is optimized again. After the optimization is completed, the optimized model is created according to the three-dimensional geometric model of the pump impeller. The models before and after optimization are as follows Figures 7a-7d As shown; Disassemble the right metal baffle 7 and the impeller before optimization, remove the impeller 4 before optimization, and replace it with the impeller after optimization, ensuring that the relative positions of the impeller and guide vanes are accurate during installation, and use key pins to connect the impeller to the pump shaft and fix it to the pump casing, and then perform another experimental optimization on the impeller 4 according to the process of steps 2-4 until the required optimization effect is achieved.

Claims

1. A visual single-stage gas-liquid mixed pump integrated test bench for optimization verification, characterized in that: The invention comprises a test bench body, on which a motor (1) is fixedly arranged, the output shaft of the motor (1) is sequentially connected to a torque meter (2), a rotating shaft, and a pump shaft (9) of a single-stage gas-liquid mixed pump (8), a bearing is installed on the rotating shaft, a bearing box (3) is fixed at a position corresponding to the bearing on the test bench body, the bearing is installed in the bearing box (3), a left metal baffle (6) is detachably fixed on a side of the bearing box (3) close to the single-stage gas-liquid mixed pump (8), a right metal baffle (7) is detachably connected to a side of the left metal baffle (6) away from the bearing box (3) via a screw, the single-stage gas-liquid mixed pump (8) is arranged between the left metal baffle (6) and the right metal baffle (7), the rotating shaft passes through the left metal baffle (6) and is fixedly connected to the pump shaft (9), and the other end of the pump shaft (9) is sequentially detachably connected to a guide vane (5) and an impeller (4) in a direction from the left metal baffle (6) to the right metal baffle (7).

2. The visual single-stage gas-liquid mixed pump integrated test bench for optimization verification according to claim 1 is characterized in that: The two ends of the pump housing of the single-stage gas-liquid mixed pump (8) are fixed to the left metal baffle (6) or the right metal baffle (7) on the corresponding side by means of a nut and bolt structure. The pump housing of the gas-liquid mixed pump is an organic glass housing in a square shape. The hub and blades of the impeller (4) and the guide vane (5) of the single-stage gas-liquid mixed pump (8) are black in color.

3. The visual single-stage gas-liquid mixed pump integrated test bench for optimization verification according to claim 2 is characterized in that: The guide vane (5) and the impeller (4) are mounted on the pump shaft (9) by means of a key connection.

4. The visual single-stage gas-liquid mixed pump integrated test bench for optimization verification according to claim 3 is characterized in that: A cylindrical and horizontal opening end (10) is connected to the center of the left metal baffle (6) on one side close to the bearing box (3); the other end of the opening end (10) is fixedly connected to a cylindrical outlet end (11) by nuts and bolts; the other end of the outlet end (11) is fixedly connected to the bearing box (3) by nuts and bolts; a cylindrical and horizontal opening end A (12) is provided at the center of the right end of the right metal baffle (7); The outlet end (11) is connected to one end of the bearing box (3) and is in a closed state. The outlet end (11) is located above the side wall of the cylinder and is connected to an arc-shaped outlet (13) that opens upward.

5. The visual single-stage gas-liquid mixed pump integrated test bench for optimization verification according to claim 4 is characterized in that: The opening end A (12) of the right metal baffle (7) is connected to the gas-liquid supply system using a bolt structure, and the arc-shaped outlet (13) is connected to the liquid storage tank.

6. The visual single-stage gas-liquid mixed pump integrated test bench for optimization verification according to claim 1 is characterized in that: A torque meter bracket is arranged on the test bench body, and the torque meter (2) is fixed on the torque meter bracket.

7. The visual single-stage gas-liquid mixed pump integrated test bench for optimization verification according to claim 1 is characterized in that: The left metal baffle (6) and the right metal baffle (7) are both square baffles, the side length L of the baffle is 1.5 times the diameter d2 of the guide vane rim, the impeller (4) includes 4 open blades, the guide vane (5) includes 7 closed blades, the blades of the impeller (4) and the guide vane (5) are evenly distributed around the hub, the pump shaft diameter d3 is 0.3 times the impeller rim diameter d1, the gap between the impeller (4) and the pump casing is σ, and the guide vane (5) is in contact with the inner wall of the pump casing.

8. The visual single-stage gas-liquid mixed pump integrated test bench for optimization verification according to claim 1 is characterized in that: Four universal wheels are evenly installed at the bottom of the test bench body.

9. A visual single-stage gas-liquid mixed pump integrated test method for optimization and verification, characterized in that: The specific steps are as follows: Step 1, installing the impeller to be optimized at the corresponding position on the visual single-stage gas-liquid mixed pump integrated test bench for optimization verification as described in claim 4, and installing pressure pulsation measuring points on the inlet and outlet pipes of the pump and the surface of the pump casing as required, and setting the gas-liquid ratio and flow rate; Step 2, start the motor (1) and the gas-liquid supply system, and the gas and liquid enter the opening end A (12) connected to the right metal baffle of the single-stage gas-liquid mixed delivery pump (8) through the pipeline respectively; Step 3, using a high-speed camera to record the flow state of gas and liquid in the single-stage gas-liquid mixed transfer pump (8) to obtain flow state data; Step 4, optimizing the design of the impeller of the single-stage gas-liquid mixed flow pump (8) according to the flow state data and pressure pulsation data of the single-stage gas-liquid mixed flow pump (8), installing the optimized impeller model on the test bench and conducting experiments again until the required optimization effect is achieved.

10. A visual single-stage gas-liquid mixed pump integrated test method for optimization verification, characterized in that: The optimization in step 4 is specifically as follows: using CFD numerical simulation software to perform numerical simulation on the flow field inside the gas-liquid mixed transmission pump, analyzing the flow state, velocity distribution, pressure distribution and causes of pressure pulsation of the gas-liquid two-phase, and then optimizing the pump impeller structure; In step 4, the optimized impeller model is installed on the test bench and the experiment is conducted again until the required optimization effect is achieved. Specifically: After the optimization is completed, the optimized model is created according to the three-dimensional geometric model of the pump impeller; after the optimization is completed, the optimized model is created according to the three-dimensional geometric model of the pump impeller; Then, disassemble the right metal baffle (7) and the impeller before optimization, remove the impeller before optimization (4), replace it with the impeller after optimization, and use a key pin to connect it to the pump shaft and fix it to the pump casing. Then, perform another experimental optimization on the impeller (4) according to the process of steps 2-4 until the required optimization effect is achieved.

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