Water pump turbine simulation device, and water pump turbine simulation system and control method therefor

Abstract

Provided in the present application are a water pump turbine simulation device, and a water pump turbine simulation system and a control method therefor. The water pump turbine simulation device comprises a model top cover, crank arms, guide vanes, a drive ring and a drive assembly, wherein the plurality of crank arms are arranged at equal intervals along the circumference of the model top cover; one end of each crank arm is hinged to the model top cover, a guide vane stem is fixedly connected to each crank arm, and the guide vane stems penetrate the model top cover and are rotationally connected to the model top cover; each guide vane is fixedly connected to the corresponding guide vane stem, and the guide vanes are located on the side of the model top cover facing away from the crank arms; the drive ring is arranged around the model top cover, and the other end of the crank arm is fixedly connected to the drive ring; and the drive assembly is configured to drive the drive ring to rotate around its center.

Description

Pump-turbine simulation device, pump-turbine simulation system and control method

[0001] This application claims priority to the Chinese patent application with application number 202410156528.1 filed with the China Patent Office on February 4, 2024. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of water pump turbines, and in particular to a water pump turbine simulation device, a water pump turbine simulation system and a control method. Background Art

[0003] Pump-turbines are power machines that convert water flow energy into rotational mechanical energy. They are one of the most important components of the hydropower industry, making their research and development (R&D) and testing extremely important. Existing pump-turbine hydraulic model R&D and testing focuses on performance parameters such as pump-turbine flow rate, turbine output, pump input, and efficiency. However, these performance parameters are all dependent on the opening size of the pump-turbine's guide vanes. By controlling the opening size of the guide vanes, the relevant pump-turbine performance parameters can be adjusted. SUMMARY OF THE INVENTION

[0004] However, the pump-turbine simulation device in the prior art cannot adjust the guide vane opening size in real time during the test process.

[0005] The present application provides a water pump turbine simulation device, comprising: a model top cover; a plurality of crank arms, the plurality of crank arms being arranged at equal intervals along the circumference direction of the model top cover, one end of the crank arm being hinged to the model top cover, each crank arm being fixedly connected to a guide vane shaft, the guide vane shaft passing through the model top cover, and the guide vane shaft being rotatably connected to the model top cover; a plurality of guide vanes, each guide vane being fixedly connected to a guide vane shaft, and the guide vane being located on the side of the model top cover away from the crank arm; a drive ring, being arranged around the model top cover, the other end of the crank arm being fixedly connected to the drive ring; and a drive assembly, the drive assembly being configured to drive the drive to rotate around its center of a circle.

[0006] The present application also provides a water pump turbine simulation system, comprising the above-mentioned water pump turbine simulation device; a control module, a drive component connected to the control module, and the control module is configured to control the drive component to drive the drive ring to rotate according to the working condition of the water pump turbine simulation device.

[0007] The present application also provides a control method configured to control the above-mentioned pump-turbine simulation system, including: obtaining operating condition information of the pump-turbine simulation device; and adjusting the guide vane opening value of the pump-turbine simulation device according to the operating condition information. Beneficial effects

[0008] The pump-turbine simulation device provided in the present application drives the crank arm to rotate by rotating the driving ring, and then the crank arm drives the guide vane shaft to rotate, and finally the guide vane shaft drives the guide vane to rotate, thereby realizing the adjustment of the guide vane opening size during the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG1 is a schematic structural diagram of a pump-turbine simulation device of the present application;

[0010] FIG2 is a schematic structural diagram of a pump-turbine simulation device of the present application (viewed from above);

[0011] FIG3 is a schematic structural diagram of the model top cover and the drive ring of the present application;

[0012] FIG4 is a schematic structural diagram of a drive assembly of the present application;

[0013] FIG5 is a schematic structural diagram of the pump-turbine simulation system of the present application.

[0014] Description of reference numerals:

[0015] 100, model top cover; 200, crank arm; 300, guide vane shaft; 400, guide vane; 500, drive ring; 60, drive assembly; 600, support member; 601, drive rod; 602, first limit member; 603, second limit member; 604, brake member; 700, drive member; 800, angular displacement sensor. Modes for Carrying Out the Invention

[0016] In the description of this application, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0017] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, with the first feature having a higher horizontal height than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, with the first feature having a lower horizontal height than the second feature.

[0018] In the description of this embodiment, terms such as "upper," "lower," "left," "right," "front," and "rear" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and do not have any special meanings.

[0019] As shown in Figures 1-4, the present application provides a pump-turbine simulation device, comprising a model top cover 100, multiple crank arms 200, multiple guide vanes 400, a drive ring 500, and a drive assembly 60. The multiple crank arms 200 are equidistantly spaced along the circumference of the model top cover 100. One end of the crank arm 200 is hingedly connected to the model top cover 100. Each crank arm 200 is fixedly connected to a guide vane shaft 300, which extends through the model top cover 100 and is rotatably connected to the model top cover 100. Each guide vane 400 is fixedly connected to a guide vane shaft 300, and the guide vane 400 is located on the side of the model top cover 100 facing away from the crank arm 200. The drive ring 500 is disposed around the model top cover 100, and the other end of the crank arm 200 is fixedly connected to the drive ring 500. The drive assembly 60 is configured to drive the drive ring 500 to rotate about its center of rotation.

[0020] It should be noted that the number of crank arms 200, the number of guide vane shafts 300, and the number of guide vanes 400 are the same. The model top cover 100 is a circular disk, and the crank arms 200 are arranged at equal intervals along the outer edge of the circular disk. The crank arm 200 is arranged on one side of the model top cover 100, and the guide vanes 400 are arranged on the side of the model top cover 100 facing away from the crank arm 200. The drive ring 500 is a circular ring. Since it is fixedly connected to one end of the crank arm 200, and the crank arm 200 is hinged to the model top cover 100, when the drive ring 500 rotates, the crank arm 200 will rotate with the end at which it is hinged to the model top cover 100 as the center of the circle. Since the guide vane shaft 300 is fixedly connected to the crank arm 200 and is rotatably connected to the model top cover 100, when the crank arm 200 rotates, it will drive the guide vane shaft 300 to rotate, and the guide vane shaft 300 will drive the guide vanes 400 to rotate, thereby adjusting the spacing between the guide vanes 400 and realizing the adjustment of the size of the guide vane 400 opening.

[0021] It can be understood that the pump-turbine simulation device drives the crank arm 200 to rotate by rotating the driving ring 500, and then the crank arm 200 drives the guide vane shaft 300 to rotate, and finally the guide vane shaft 300 drives the guide vane 400 to rotate, thereby realizing the adjustment of the opening size of the guide vane 400 during the experiment.

[0022] In some embodiments, the drive assembly 60 includes a drive rod 601 and a drive member 700. One end of the drive rod 601 is connected to the drive ring 500. The drive member 700 is connected to the other end of the drive rod 601 and is configured to drive the drive rod 601 to move in a first direction to drive the drive ring 500 to rotate.

[0023] It should be noted that one end of the drive rod 601 is connected to one side of the drive ring 500, and the movement of the drive rod 601 in the first direction is linear motion. Since one end of the drive rod 601 is connected to the drive ring 500, as the drive rod 601 moves, the linear motion will be converted into the rotational motion of the drive ring 500, thereby adjusting the opening size of the guide vane 400.

[0024] The driving member 700 is a type of telescopic mechanism that can drive the drive rod 601 to linearly move in a first direction. For example, the telescopic mechanism is a telescopic cylinder. Alternatively, the telescopic mechanism includes a motor, a gear, and a rack, wherein the gear is connected to the rotating shaft of the motor, and the rack meshes with the gear. The motor rotates to achieve linear motion of the rack, and the rack is connected to the drive rod 601 to achieve linear motion of the drive rod 601.

[0025] In some embodiments, the drive rod 601 is configured to reciprocate between a first position and a second position.

[0026] It should be noted that the movement of the drive rod 601 between the first and second positions in the first direction limits the movement path of the drive rod 601, thereby limiting the rotation angle of the drive ring 500 to a fixed angle. Since the guide vanes 400 rotate along with the guide vane shaft 300, the rotation angle of the guide vanes 400 is limited, preventing excessive rotation and causing the guide vanes 400 to open too wide. Furthermore, the reciprocating motion allows the guide vane 400 opening to be adjusted to the same set value multiple times.

[0027] In some embodiments, the drive assembly 60 also includes a support member 600, the drive rod 601 is slidably connected to the support member 600, and a first limit member 602 and a second limit member 603 are spaced apart on the support member 600. The first limit member 602 and the second limit member 603 are configured to limit the drive rod 601 to move between a first position and a second position.

[0028] It can be understood that the first limiting member 602 and the second limiting member 603 are provided to block the movement of the driving rod 601 so that the driving rod 601 cannot go beyond the first position and the second position.

[0029] Specifically, a first stopper and a second stopper are respectively provided near both ends of the driving rod 601. The first stopper is located on a side of the first limiting member 602 close to the second limiting member 603, and the second stopper is located on a side of the second limiting member 603 close to the first limiting member 602. The first stopper is configured to abut against the first limiting member 602 when the driving rod 601 moves from the second position toward the first position, so that the driving rod 601 can only move to the first position; the second stopper is configured to abut against the second limiting member 603 when the driving rod 601 moves from the first position toward the second position, so that the driving rod 601 can only move to the second position.

[0030] In some embodiments, a brake member 604 is provided on the driving rod 601, and the brake member 604 is located between the first limiting member 602 and the second limiting member 603. When the brake member 604 moves to the first position, the brake member 604 abuts against the first limiting member 602. When the driving rod 601 moves to the second position, the brake member 604 abuts against the second limiting member 603.

[0031] It is understandable that the first limiter 602 , the brake 604 and the second limiter 603 are on the same straight line along the first direction, so that the first limiter 602 and the second limiter 603 can abut against the brake 604 , thereby limiting the movement of the driving rod 601 .

[0032] In some embodiments, the first limit member 602 is a first potentiometer, and a first contact is provided on the first potentiometer; the second limit member 603 is a second potentiometer, and a second contact is provided on the second potentiometer; the first potentiometer and the second potentiometer are both connected to the driving member 700, and the brake member 604 is configured to stop the driving member 700 from driving the driving rod 601 when it contacts either the first contact or the second contact.

[0033] It can be understood that the first potentiometer and the second potentiometer are both connected to the control center (such as a computer) of the pump-turbine simulation device to feed back the information that the brake member 604 contacts the first contact or the second contact to the control center, so that the control center controls the driving rod 601 to stop moving.

[0034] For example, the driving member 700 includes a motor, a gear, and a rack. The gear is connected to the rotating shaft of the motor, and the rack meshes with the gear. The rotation of the motor causes the rack to move linearly. The rack is connected to the driving rod 601 to achieve linear motion of the driving rod 601. The motor is connected to a control center. When the control center receives a signal that the first contact or the second contact contacts the brake member 604, the control center controls the motor to stop rotating, thereby stopping the driving rod 601 in the first position or the second position.

[0035] In some embodiments, a slide groove is provided on the support member 600, the driving rod 601 is provided in the slide groove, the first limit member 602 and the second limit member 603 are spaced apart at the top of the slide groove, and the brake member 604 is provided on the driving rod 601 and is located between the first limit member 602 and the second limit member 603.

[0036] In some embodiments, angular displacement sensors 800 are provided on at least two guide vane shafts 300 in the pump-turbine simulation device.

[0037] It should be noted that the angular displacement sensor 800 is located on the side of the model top cover 100 facing away from the guide vane 400. In order to install the angular displacement sensor 800, the guide vane shaft 300 configured to fix the angular displacement sensor 800 is longer than other guide vane shafts 300 on which the angular displacement sensor 800 is not installed, so as to fix the angular displacement sensor 800.

[0038] The angular displacement sensor 800 can transmit some information parameters such as angular momentum and its own voltage to the control center in a wireless or wired manner.

[0039] As shown in Figure 5, an embodiment of the present application also proposes a water pump turbine simulation system, including the above-mentioned water pump turbine simulation device and a control module, the drive component 60 is connected to the control module, and the control module is configured to control the drive component 60 to drive the drive ring 500 to rotate according to the working conditions of the water pump turbine simulation device.

[0040] It can be understood that since the pump-turbine simulation system includes the pump-turbine simulation device of the above-mentioned single embodiment or a combination of multiple embodiments, it has at least some or all of the beneficial effects of the pump-turbine simulation device in the above-mentioned embodiments, which will not be described one by one here.

[0041] The embodiment of the present application further provides a control method for the above-mentioned pump-turbine simulation device, the control method comprising:

[0042] S10, obtaining operating condition information of the pump-turbine simulation device.

[0043] The operating condition information includes operating flow, operating output, operating input, and the efficiency of the pump-turbine simulator. Here, obtaining operating condition information means obtaining at least one of the aforementioned types of operating condition information. This operating condition information can be obtained through other monitoring equipment and fed back to the control center.

[0044] S40, adjusting the guide vane opening value of the pump-turbine simulation device according to the operating condition information.

[0045] The guide vane opening value of the pump-turbine simulation device is adjusted by controlling the driving assembly 60 through the control module to rotate the guide vane 400 and adjust the opening size of the guide vane 400.

[0046] Furthermore, in some embodiments, at least two guide vane shafts 300 in the pump-turbine simulation device are provided with angular displacement sensors 800, and the control method includes:

[0047] S30 , before adjusting the guide vane opening value of the pump-turbine simulation device according to the operating condition information, obtaining the guide vane opening value of the pump-turbine simulation device.

[0048] Wherein, S30, obtaining the guide vane opening value of the pump-turbine simulation device includes:

[0049] S400 , obtaining a first voltage of the angular displacement sensor 800 on the guide vane shaft 300 in the pump-turbine simulation device.

[0050] The guide vanes 400 on the pump-turbine model in the pump-turbine test are connected to the guide vane shaft 300. The guide vanes 400 rotate along with the guide vane shaft 300. The angular displacement sensor 800 is disposed on the guide vane shaft 300. By monitoring the rotation angle of the guide vane shaft 300, the rotation angle of the guide vane 400 can be monitored. The first voltage on the angular displacement sensor 800 is related to the rotation angle of the guide vane shaft 300 and the angle at which it is located.

[0051] The first voltage is a voltage that maintains a stable value over a certain period of time in the angular displacement sensor. Because the voltage change of the angular displacement sensor 800 is related to the movement of the guide vane shaft 300, when the guide vane shaft 300 is stationary, it indicates that the guide vane shaft 300 is in a fixed state. In other words, the guide vane shaft 300 (and guide vanes 400) must be in a non-moving state to ensure that the guide vane opening value obtained based on the first voltage is accurate.

[0052] S500: Determine a guide vane opening value in a pump-turbine simulation device according to the first voltage.

[0053] Wherein, through a preset conversion relationship, according to the determined first voltage, the corresponding guide vane opening value is determined.

[0054] It is understood that this control method obtains the first voltage of the angular displacement sensor 800 on the guide vane shaft 300 in the pump-turbine simulator and then determines the guide vane opening value in the pump-turbine simulator based on the first voltage. In other words, this control method can monitor the guide vane opening value during a pump-turbine model test, thereby precisely controlling the opening size of the movable guide vanes 400 to regulate relevant parameters and performance of the pump-turbine and ensure the accuracy of the test results.

[0055] In some embodiments, S500, determining a guide vane opening angle value in a pump-turbine simulation device according to the first voltage, includes:

[0056] S520: Determine a guide vane opening angle value corresponding to the first voltage.

[0057] Among them, the guide vane opening angle value is the angle formed between two adjacent guide vanes 400. Since the pump-turbine model has multiple equally spaced movable guide vanes 400, the movable guide vanes 400 are set on the guide vane shaft 300, and the orientations of all movable guide vanes 400 are consistent during initial installation. Therefore, the angle between any two adjacent guide vanes 400 in the pump-turbine model is the guide vane opening angle value of the pump-turbine model.

[0058] During the test, all the movable guide vanes 400 in the pump-turbine model move in unison. As the guide vane shaft 300 rotates, the guide vane opening angle changes, and the voltage of the angular displacement sensor 800 also changes and stabilizes.

[0059] S540: Determine the guide vane opening value according to the guide vane opening angle value.

[0060] Since all movable guide vanes 400 in the pump-turbine model move in unison, each fixed guide vane opening angle corresponds to a specific guide vane opening value. Therefore, based on a specific guide vane opening angle value, the corresponding guide vane opening value can be determined according to the corresponding conversion relationship.

[0061] In some embodiments, S520, determining a guide vane opening angle value corresponding to the first voltage, includes:

[0062] S521: Determine a guide vane opening angle value corresponding to the first voltage according to the first conversion relationship and the first voltage.

[0063] The first conversion relationship may be a functional relationship between the first voltage and the guide vane opening angle value. When the first voltage is known, the guide vane opening angle value may be obtained according to the first voltage.

[0064] The first conversion relationship may also be an interval correspondence relationship. For example, when the first voltage is within a certain voltage interval, all first voltages within the voltage interval correspond to the same guide vane opening angle value.

[0065] In some embodiments, the control method further includes:

[0066] S100 , before obtaining the first voltage of the angular displacement sensor 800 on the guide vane shaft 300 in the pump-turbine simulation device, determine a first conversion relationship based on a plurality of pre-measured first voltages and a guide vane opening angle value corresponding to each first voltage.

[0067] During the non-experimental process, the guide vane shaft 300 is individually controlled to rotate a certain angle, and the first voltage of the angular displacement sensor 800 on the guide vane shaft 300 is obtained at this time. The guide vane opening angle value and the corresponding first voltage are recorded at this time. The above steps are repeated to obtain at least five sets of guide vane opening angle values ​​and first voltages. The aforementioned at least five sets of guide vane opening angle values ​​and first voltages are pre-stored in the corresponding processing center. The processing center fits the functional relationship between the guide vane opening angle value and the first voltage based on the aforementioned at least five sets of guide vane opening angle values ​​and the first voltage. Based on this functional relationship, when the first voltage is known, the corresponding guide vane opening angle value can be determined.

[0068] It should be noted that the guide vane opening angle value and the first voltage obtained above are both obtained through actual measurement.

[0069] In some embodiments, the control method further includes:

[0070] S100 , before obtaining the first voltage of the angular displacement sensor 800 on the guide vane shaft 300 in the pump-turbine simulation device, obtain multiple first voltages and a guide vane opening angle value corresponding to each first voltage through simulation or testing.

[0071] It should be noted that multiple first voltages and corresponding guide vane opening angle values ​​are obtained through simulation, i.e., simulation software. The performance parameters of angular displacement sensor 800 are input into the simulation software, and at least five sets of first voltages and corresponding guide vane opening angle values ​​are obtained through the simulation software.

[0072] Through testing, that is, through the testing system of the pump-turbine simulation device, multiple first voltages and the guide vane opening angle value corresponding to each first voltage are tested and recorded multiple times.

[0073] S200 , determining a first conversion relationship according to a plurality of first voltages and a guide vane opening angle value corresponding to each first voltage.

[0074] The processing center fits the data obtained by the test system / simulation software to obtain a functional relationship between the guide vane opening angle value and the first voltage, namely a first conversion relationship. Based on this functional relationship, the corresponding guide vane opening angle value can be determined when the first voltage is known.

[0075] In some embodiments, S540, determining the guide vane opening value according to the guide vane opening angle value includes:

[0076] S541: Determine the guide vane opening value according to the second conversion relationship and the guide vane opening angle value.

[0077] The second conversion relationship may be a functional relationship between the guide vane opening value and the guide vane opening angle value, that is, a second conversion relationship. According to the functional relationship, when the guide vane opening angle value is known, the corresponding guide vane opening value may be determined.

[0078] In some embodiments, the control method further includes:

[0079] S310 , before obtaining the first voltage of the angular displacement sensor 800 on the guide vane shaft 300 in the pump-turbine simulation device, obtain multiple guide vane opening angle values ​​and guide vane opening values ​​corresponding to each guide vane opening angle value based on simulation software.

[0080] The simulation software can be used to simulate the states of two adjacent guide vanes 400 corresponding to the guide vane opening angle values, thereby determining the guide vane opening values ​​of the two guide vanes 400. At least ten sets of guide vane opening angle values ​​and corresponding guide vane opening values ​​are obtained through the simulation software.

[0081] S320: Determine a second conversion relationship based on a plurality of guide vane opening angle values ​​and a guide vane opening value corresponding to each guide vane opening angle value.

[0082] Among them, based on the above-mentioned at least ten groups of guide vane opening angle values ​​and the corresponding guide vane opening values, the processing center fits the functional relationship between the guide vane opening angle value and the guide vane opening value, and according to the functional relationship, the guide vane opening value is determined when the guide vane opening angle value is known.

[0083] In some embodiments, the control method includes:

[0084] S520: Determine a guide vane opening angle value corresponding to the first voltage.

[0085] S540: Determine the guide vane opening value according to the guide vane opening angle value.

[0086] S600: Determine an actual guide vane opening value according to a preset guide vane opening value compensation value.

[0087] Among them, the actual guide vane opening value ;in, is the actual guide vane opening value, is the guide vane opening value, and the guide vane opening compensation value is .

[0088] in, .

[0089] in, Compensate for guide vane installation errors; is the test error of the angular displacement sensor.

[0090] In order to obtain the guide vane installation compensation error, the guide vane opening value between adjacent guide vanes is tested when the pump turbine model is assembled. , , ,... ; and calculate the average guide vane opening value based on the measured guide vane opening value , ; and calculate the maximum error of the guide vane opening value based on the average guide vane opening value ;in, There are two calculation methods, one is , that is, the maximum guide vane opening value among the guide vane opening values ​​minus the average guide vane opening value; the other is , that is, the average guide vane opening value minus the minimum guide vane opening value among the guide vane opening values; based on the above data, the guide vane installation compensation error is ;in, Pick and The maximum value in .

[0091] In order to obtain the test error of the angular displacement sensor, based on the conversion relationship between the guide vane opening value and the guide vane opening angle value in the above embodiment, the average guide vane opening value is calculated. , determine the average guide vane opening value Corresponding guide vane opening angle value ; Calibration coefficient of angular displacement sensor , , And the voltage value of the angular displacement sensor 800 at this time , get the guide vane opening angle value tested by angular displacement sensor 800 ;Based on the above data, the test error of the angular displacement sensor is .

[0092] Right now, .

[0093] In some embodiments, S500, determining a guide vane opening value in a pump-turbine simulation device according to the first voltage, includes:

[0094] S520: Determine a guide vane opening value corresponding to the first voltage according to the third conversion relationship and the first voltage.

[0095] Multiple sets of first voltages and corresponding guide vane opening values ​​can be obtained through simulation. Based on the simulated data, the processing center fits a functional relationship between the first voltages and the guide vane opening values, i.e., a third conversion relationship. Based on this functional relationship, the guide vane opening value can be determined given the first voltages.

[0096] Among them, multiple groups of first voltages and corresponding guide vane opening values ​​can be obtained through pre-measurement. The processing center fits the multiple groups of first voltages and their corresponding guide vane opening values ​​to obtain a functional relationship between the first voltage and the guide vane opening value. According to the functional relationship, the guide vane opening value is determined when the first voltage is known.

Claims

1. A pump-turbine simulation device, comprising: Model top cover; A plurality of crank arms, each of which is equidistantly spaced along the circumference of the mold top cover, one end of each crank arm being hinged to the mold top cover, each crank arm being fixedly connected to a guide vane shaft, the guide vane shaft passing through the mold top cover, and the guide vane shaft being rotatably connected to the mold top cover; a plurality of guide vanes, each of the guide vanes being fixedly connected to a guide vane shaft, and the guide vanes being located on a side of the mold top cover facing away from the crank arm; A driving ring is arranged around the model top cover, and the other end of the crank arm is fixedly connected to the driving ring; A driving assembly is configured to drive the drive to rotate around its center.

2. The pump-turbine simulation device according to claim 1, wherein: The drive assembly includes: a driving rod, one end of which is connected to the driving ring; A driving member is connected to the other end of the driving rod, and the driving member is configured to drive the driving rod to move in a first direction to drive the driving ring to rotate.

3. The pump-turbine simulation device according to claim 2, wherein: The drive rod is configured to reciprocate between a first position and a second position.

4. The pump-turbine simulation device according to claim 3, wherein: The drive assembly also includes a support member, the drive rod is slidably connected to the support member, and a first limit member and a second limit member are spaced apart on the support member. The first limit member and the second limit member are configured to limit the drive rod to move between the first position and the second position.

5. The pump-turbine simulation device according to claim 4, wherein: A brake member is provided on the driving rod and is located between the first limiting member and the second limiting member. When the brake member moves to the first position, the brake member abuts against the first limiting member. When the driving rod moves to the second position, the brake member abuts against the second limiting member.

6. The pump-turbine simulation device according to claim 5, wherein: The first limiting member is a first potentiometer, and the first potentiometer is provided with a first contact; The second limiting member is a second potentiometer, and the second potentiometer is provided with a second contact; The first potentiometer and the second potentiometer are both connected to the driving member, and the braking member is configured to stop the driving member from driving the driving rod when the braking member contacts any one of the first contact point and the second contact point.

7. The pump-turbine simulation device according to claim 5, wherein: A slide groove is provided on the support member, the driving rod is provided in the slide groove, the first limiting member and the second limiting member are spaced apart and arranged at the top of the slide groove, and the brake member is provided on the driving rod and is located between the first limiting member and the second limiting member.

8. The pump-turbine simulation device according to claim 1, wherein: At least two of the guide vane shafts in the pump-turbine simulation device are provided with angular displacement sensors.

9. A pump-turbine simulation system comprising: The pump-turbine simulation device according to any one of claims 1 to 8; A control module is provided, wherein the drive assembly is connected to the control module, and the control module is configured to control the drive assembly to drive the drive ring to rotate according to the working condition of the pump-turbine simulation device.

10. A control method, configured to control the pump-turbine simulation system of claim 9 to obtain operating condition information of the pump-turbine simulation device; According to the operating condition information, the guide vane opening value of the pump-turbine simulation device is adjusted.

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