Water turbine speed regulation control test device with dynamic detection structure

Abstract

The utility model discloses a water turbine speed regulation control test device with a dynamic detection structure, which comprises a mounting table, the mounting table is of a U-shaped table body structure, a water turbine simulation box is arranged in the mounting table, one side of the water turbine simulation box is connected with a control operation table, and a simulation test table for the working state of a water turbine is formed. According to the water turbine speed regulation control test device with the dynamic detection structure, MPC dynamic image shooting devices are arranged on the side wall face in a water turbine simulation box at equal intervals, the upper end of a main shaft and a rotor of a rotor positioning table are directly shot, and the state of corresponding water turbine simulation motion is obtained through shooting of each frame of image; the moving object is detected by comparing the difference between two continuous frames of images, the pixel difference between the current frame and the previous frame is calculated, and the position and the range of the moving object are determined according to the size and the distribution of the difference, so that the data acquisition source of the simulated water turbine speed regulation test is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbine testing, in particular to a water turbine speed regulation control testing device provided with a dynamic detection structure. Background Art

[0002] As an important part of clean energy, hydropower stations play an indispensable role in the transformation of the global energy structure. As a key device for converting water energy into electrical energy, the regulation performance of turbines is directly related to the efficiency of power stations and the stability of power grids. With the growing demand for efficient and stable power transmission in the power sector, turbine speed control systems face unprecedented technical challenges. In order to design a better turbine speed control system, it is necessary to simulate the corresponding test conditions and environments to simulate the working conditions of turbines and realize data detection of turbine speed regulation.

[0003] Most of the existing turbine test devices are closed structures. During the test, multiple controllers and sensors need to be added to centrally compare the water flow activity with the data emitted by the electricity, which takes a long time to obtain the device data. As the number of sensor devices increases, the control difficulty increases. PID technology is used for control and evaluation. PID needs to rely on the feedback of sensors. As the test data becomes weaker, the sensors are excessively worn during use, affecting the accuracy of the PID test data. Utility Model Content

[0004] The purpose of the utility model is to provide a turbine speed control test device with a dynamic detection structure to solve the problem proposed in the above background technology that a plurality of controllers and sensors need to be added during the test to centrally compare the data of water flow activity and power emission, which makes the acquisition time of device data longer, and as the number of sensor devices increases, the control difficulty increases, and PID technology is used for control and evaluation. PID needs to rely on the feedback of sensors. As the test data strength increases, the sensors are excessively worn during use, affecting the accuracy of PID test data.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a turbine speed control test device provided with a dynamic detection structure, comprising a mounting platform, which is arranged as a U-shaped platform structure, a turbine simulation box is arranged inside the mounting platform, and a control operation table is connected to one side of the turbine simulation box, so as to constitute a simulation test platform for the working state of the turbine;

[0006] The side wall of the turbine simulation box is provided with an observation window, one end of which is penetrated by a simulated liquid inlet pipe, and the simulated liquid inlet pipe is connected to the inside of the turbine simulation box, and a tailwater pipe is provided at the bottom end of the turbine simulation box, and the bottom end of the tailwater pipe is connected to a discharge pipe;

[0007] A protective shell is installed on the top of the turbine simulation box, the top of the protective shell is connected by a connecting pipe, and a rotor positioning platform is arranged at the bottom of the connecting pipe, and fluorescent markers are equidistantly arranged at the bottom of the rotor positioning platform, the bottom of the connecting pipe is connected to a main shaft, and the main shaft is equipped with turbine runner blades, the turbine runner blades are located inside the turbine simulation box, and a dynamic detection component is arranged inside the turbine simulation box for detecting the dynamic rotation speed data inside the turbine simulation box to assist the test of the turbine.

[0008] The above technical solution is adopted to facilitate the device to simulate the working environment of the turbine to conduct simulation tests and obtain corresponding data.

[0009] Preferably, the mounting platform has support frames installed equidistantly inside, and the support frames in the U-shaped opening of the mounting platform are connected to the bottom end of the turbine simulation box.

[0010] By adopting the above technical solution, the mounting platform can be limited for the installation of the turbine simulation box.

[0011] Preferably, the dynamic detection component includes:

[0012] A control operation platform, which is installed on one side of the installation platform;

[0013] An observation window is installed on the side wall of the turbine simulation box, and the observation window is made of high-transparency and pressure-resistant plastic;

[0014] An MPC dynamic image camera is equidistantly installed on one side of the observation window, and a shooting end of the MPC dynamic image camera faces the inside of the turbine simulation box;

[0015] A transparent protective frame is installed on the inner wall of the turbine simulation box.

[0016] By adopting the above technical solution, the dynamic detection component facilitates the centralized acquisition of data on the internal state of the simulated turbine.

[0017] Preferably, the MPC dynamic image capture device is electrically connected to a control console, and the control console is connected to a flow meter simulating a liquid inlet pipeline and a tailwater pipe, and an electric power meter connected to a rotor positioning platform.

[0018] By adopting the above technical solution, corresponding data information can be quickly obtained through the control console.

[0019] Preferably, the transparent protective frame is installed on one side of the output end of the MPC dynamic image capture device, and the transparent protective frame and the observation window are arranged in a concentric circle.

[0020] By adopting the above technical solution, the transparent protective frame protects the image capturing end of the MPC dynamic image capturer, thereby preventing the MPC dynamic image capturer from being affected by water flow.

[0021] Preferably, one end of the simulated liquid inlet pipe penetrates the transparent protective frame and one side of the observation window, and the other end of the simulated liquid inlet pipe penetrates the side wall of the mounting platform.

[0022] By adopting the above technical solution, the transparent protective frame and the observation window cooperate to increase the viewing range of the internal structure of the device for monitoring.

[0023] Preferably, the simulated liquid inlet pipe is arranged in a perpendicular direction to the tailwater pipe, and a spiral pipe structure is arranged inside the tailwater pipe.

[0024] By adopting the above technical solution, the simulated liquid inlet pipe and the tailwater pipe cooperate to simulate the liquid flow direction during the operation of the turbine and output the result in coordination.

[0025] Compared with the prior art, the utility model has the following beneficial effects: the turbine speed control test device provided with a dynamic detection structure:

[0026] 1. Through the MPC dynamic image capturer set at equal distances on the side wall of the turbine simulation box, the upper end of the main shaft and the rotor positioning platform are directly photographed. The corresponding state of the turbine simulation movement is obtained by capturing each frame of the image. The moving object is detected by comparing the difference between two consecutive frames of images, and the pixel difference between the current frame and the previous frame is calculated. The position and range of the moving object are determined according to the size and distribution of the difference, so that the data acquisition source of the simulated turbine speed regulation test is stable and the overall adaptability is strong;

[0027] 2. As the connection between the top of the turbine simulation box and the protective shell is a transparent structure, the transparent protective frame is used to accurately capture images of the internal conditions of the turbine simulation box, which is convenient for the MPC dynamic image camera to work and process. The rotor and stator set on the surface of the connecting pipe cooperate to capture dynamic images. The corresponding images are detected by analyzing the pixel movement between consecutive image frames, calculating the displacement of each pixel between two consecutive frames, and determining the movement direction and speed of the object based on these displacements. The MPC technology is used to achieve adjustment processing of the turbine speed control test. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the overall internal three-dimensional structure of the utility model;

[0030] Figure 3It is a schematic diagram of the overall internal side section stereoscopic structure of the utility model;

[0031] Figure 4 This is a schematic diagram of the split three-dimensional structure of the observation window and the MPC dynamic image camera of the utility model;

[0032] Figure 5 This is a schematic diagram of the three-dimensional structure of the hydraulic turbine simulation box and the observation window installation of the utility model;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the main shaft and turbine runner vortex blade installation of the utility model.

[0034] In the figure: 1. installation table; 2. control operation table; 3. turbine simulation box; 4. observation window; 5. MPC dynamic image camera; 6. transparent protective frame; 7. simulated liquid inlet pipeline; 8. tailwater pipe; 9. discharge pipe; 10. main shaft; 11. turbine runner blade; 12. connecting pipe; 13. rotor positioning table; 14. protective shell. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figure 1-6 The utility model provides a technical solution: a turbine speed control test device with a dynamic detection structure, including a mounting platform 1, a control operation platform 2, a turbine simulation box 3, an observation window 4, an MPC dynamic image camera 5, a transparent protective frame 6, a simulated liquid inlet pipeline 7, a tailwater pipe 8, a discharge pipe 9, a main shaft 10, a turbine runner vortex blade 11, a connecting pipe 12, a rotor positioning platform 13 and a protective shell 14;

[0037] The mounting platform 1 is configured as a U-shaped platform structure, a turbine simulation box 3 is provided inside the mounting platform 1, and a control operation platform 2 is connected to one side of the turbine simulation box 3, so as to constitute a simulation test platform for the working state of the turbine, and a support frame is equidistantly installed inside the mounting platform 1, and the support frame in the U-shaped opening of the mounting platform 1 is located at the bottom end of the turbine simulation box 3 and connected;

[0038] An observation window 4 is provided on the side wall of the turbine simulation box 3, one end of the observation window 4 is penetrated by a simulated liquid inlet pipe 7, and the simulated liquid inlet pipe 7 is connected to the inside of the turbine simulation box 3, a tailwater pipe 8 is provided at the bottom end of the turbine simulation box 3, and a discharge pipe 9 is connected to the bottom end of the tailwater pipe 8;

[0039] A protective housing 14 is installed at the top of the hydraulic turbine simulation box 3, the top of the protective housing 14 is connected by a connecting pipe 12, and a rotor positioning platform 13 is arranged at the bottom of the connecting pipe 12, and fluorescent markers are arranged equidistantly at the bottom of the rotor positioning platform 13, the bottom of the connecting pipe 12 is connected to a main shaft 10, and the main shaft 10 is installed with a hydraulic turbine runner vortex blade 11, the hydraulic turbine runner vortex blade 11 is located inside the hydraulic turbine simulation box 3, and a dynamic detection component is arranged inside the hydraulic turbine simulation box 3, which is used to detect the dynamic rotation speed data inside the hydraulic turbine simulation box 3 to assist the test of the hydraulic turbine;

[0040] In conjunction with the accompanying drawings Figure 1-6 As shown, the installation position of the turbine simulation box 3 is limited by the mounting platform 1 in cooperation with the support frame arranged inside, wherein an observation window 4 is installed in the side wall of the turbine simulation box 3, wherein a seal is arranged at the connection between the turbine simulation box 3 and the observation window 4, for maintaining the internal stable installation, and a simulated liquid inlet pipe 7 runs through one side of the mounting platform 1, and the internal liquid is prevented from leaking to the outside through the seal, and as the simulated liquid inlet pipe 7 is fed into the inside of the turbine simulation box 3, the flow of turbine liquid is simulated, wherein the main shaft 10 and the turbine runner vortex blades 11 rotate with the water flow, wherein the tailwater pipe 8 and the discharge pipe 9 arranged at the bottom end of the turbine simulation box 3 are used to discharge the liquid flow, wherein the simulated liquid inlet pipe 7 is installed and used in cooperation with the flow solenoid valve, for controlling the liquid flow rate, so as to realize the speed regulation of the turbine;

[0041] The dynamic detection components include:

[0042] A control operation platform 2, which is installed on one side of the installation platform 1;

[0043] An observation window 4 is installed on the side wall of the turbine simulation box 3, and the observation window 4 is made of high-transparency and pressure-resistant plastic;

[0044] The MPC dynamic image camera 5 is equidistantly installed on one side of the observation window 4, and the shooting end of the MPC dynamic image camera 5 faces the inside of the turbine simulation box 3. The MPC dynamic image camera 5 is electrically connected to the control console 2, and the control console 2 is connected to the flow detector of the simulated liquid inlet pipeline 7 and the tailwater pipe 8 and the power meter connected to the rotor positioning platform 13;

[0045] A transparent protective frame 6 is installed on the inner wall of the turbine simulation box 3. The transparent protective frame 6 is installed on one side of the output end of the MPC dynamic image capture device 5, and the transparent protective frame 6 and the observation window 4 are arranged in a concentric circle. One end of the simulated liquid inlet pipe 7 penetrates through one side of the transparent protective frame 6 and the observation window 4, and the other end of the simulated liquid inlet pipe 7 penetrates through the side wall of the mounting platform 1. The simulated liquid inlet pipe 7 is arranged in a vertical direction with the tailwater pipe 8, and a spiral pipe structure is arranged inside the tailwater pipe 8;

[0046] In conjunction with the accompanying drawings Figure 1-6 As shown, the flow control valve of the simulated liquid inlet pipeline 7 and the MPC dynamic image camera 5 structure are installed through the control console 2, wherein the connecting pipe 12 installed at the top of the main shaft 10 is connected to the turbine rotor, so that the rotor positioning platform 13 is located at the bottom limit of the rotor, and the fluorescent mark set at the bottom of the rotor positioning platform 13 cooperates with the image shooting of the MPC dynamic image camera 5 to facilitate the MPC technology to identify the speed, rotation angle and direction of the captured image, which is used to obtain the corresponding data information of the turbine speed regulation test, and further improves the real-time and intelligent nature of the control strategy.

[0047] Working principle: When using the turbine speed control test device with a dynamic detection structure, the observation window 4, the MPC dynamic image capturer 5 and the transparent protective frame 6 are equidistantly arranged in concentric circles, so that the image capture of the MPC dynamic image capturer 5 is located at the top position of the rotation of the turbine runner vortex blade 11. A transparent plate structure is arranged at the top of the turbine simulation box 3, which is convenient for capturing the main shaft 10, the turbine runner vortex blade 11 and the bottom position of the rotor positioning platform 13. The fluorescent mark at the bottom of the rotor positioning platform 13 is used to compare the difference between two consecutive frames of images through the frame difference method to detect the state position and range of the moving turbine runner vortex blade 11 and the rotor positioning platform 13. In conjunction with the MPC control technology, the activity state of the turbine inside the turbine simulation box 3 is dynamically detected. The simulation test realizes the dynamic interactive transfer of the speed space process of the power system, and quickly obtains the corresponding accurate data parameters for further research and development of the turbine speed control system, thereby increasing the overall practicality.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turbine speed control test device with a dynamic detection structure, including: The mounting platform (1) is configured as a U-shaped platform structure, a hydraulic turbine simulation box (3) is provided inside the mounting platform (1), and a control operation platform (2) is connected to one side of the hydraulic turbine simulation box (3), thereby constituting a simulation test platform for the hydraulic turbine working state; The invention is characterized in that: an observation window (4) is arranged on the side wall of the turbine simulation box (3); one end of the observation window (4) is penetrated by a simulated liquid inlet pipe (7); the simulated liquid inlet pipe (7) is connected to the interior of the turbine simulation box (3); a tailwater pipe (8) is arranged at the bottom end of the turbine simulation box (3); and the bottom end of the tailwater pipe (8) is connected to a discharge pipe (9); A protective housing (14) is mounted on the top of the turbine simulation box (3); the top of the protective housing (14) is connected to a connecting pipe (12); a rotor positioning platform (13) is provided at the bottom of the connecting pipe (12); and fluorescent markers are equidistantly provided at the bottom of the rotor positioning platform (13); the bottom of the connecting pipe (12) is connected to a main shaft (10); and the main shaft (10) is equipped with turbine runner blades (11); the turbine runner blades (11) are located inside the turbine simulation box (3); and a dynamic detection component is provided inside the turbine simulation box (3) for detecting dynamic rotation speed data inside the turbine simulation box (3) to assist in testing the turbine.

2. The turbine speed control test device with a dynamic detection structure according to claim 1 is characterized in that: The mounting platform (1) has support frames installed at equal intervals inside, and the support frames in the U-shaped opening of the mounting platform (1) are located at the bottom end of the turbine simulation box (3) and connected.

3. The turbine speed control test device with a dynamic detection structure according to claim 1 is characterized in that: The dynamic detection component comprises: A control operation table (2), which is installed on one side of the installation table (1); An observation window (4) is mounted on the side wall of the turbine simulation box (3), and the observation window (4) is made of high-transmittance and pressure-resistant plastic; An MPC dynamic image camera (5) is equidistantly mounted on one side of the observation window (4), with the shooting end of the MPC dynamic image camera (5) facing the interior of the turbine simulation box (3); A transparent protective frame (6) is installed on the inner wall surface of the turbine simulation box (3).

4. The turbine speed control test device with a dynamic detection structure according to claim 3 is characterized in that: The MPC dynamic image capture device (5) is electrically connected to the control console (2), and the control console (2) is connected to a flow detector simulating the liquid inlet pipeline (7) and the tailwater pipe (8) and an electric power meter connected to the rotor positioning platform (13).

5. The turbine speed control test device with a dynamic detection structure according to claim 3 is characterized in that: The transparent protective frame (6) is installed on one side of the output end of the MPC dynamic image capture device (5), and the transparent protective frame (6) and the observation window (4) are arranged in a concentric circle.

6. The turbine speed control test device with a dynamic detection structure according to claim 3 is characterized in that: One end of the simulated liquid inlet pipe (7) penetrates through the transparent protective frame (6) and one side of the observation window (4), and the other end of the simulated liquid inlet pipe (7) penetrates through the side wall surface of the mounting platform (1).

7. The turbine speed control test device with a dynamic detection structure according to claim 1 is characterized in that: The simulated liquid inlet pipeline (7) and the tailwater pipe (8) are arranged in a vertical direction, and a spiral pipeline structure is arranged inside the tailwater pipe (8).

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