Pneumatic simulation experiment table for wind power generation fan blade

Abstract

The utility model discloses a wind power generation fan blade pneumatic simulation experiment table, which belongs to the technical field of wind power generation fan blade pneumatic simulation, and is characterized by comprising a simulation box, a wind sand simulation assembly is arranged in the simulation box, and a sealing assembly is arranged on the outer side of the simulation box. The wind-sand simulation assembly comprises a supporting seat fixedly connected into the simulation box, and the problems that when an existing wind power generation fan blade pneumatic simulation experiment table conducts a wind-sand simulation experiment, an automatic sand cleaning structure is generally lacked, accumulated sand generated in the experiment process is not convenient to continuously remove, and the experiment efficiency is high can be solved. The existing wind power generation fan blade pneumatic simulation experiment table generally adopts a bolt type or rigid buckle type sealing structure, so that the sealing and the opening of the simulation box are inconvenient to quickly complete, the experiment preparation process is tedious, the operation is simple, and the cost is low. And the experiment efficiency is influenced.

Description

Technical Field

[0001] This utility model relates to the field of aerodynamic simulation technology for wind turbine blades, and in particular to an aerodynamic simulation test bench for wind turbine blades. Background Technology

[0002] With the continuous growth of global demand for clean energy, wind power, as a clean and renewable energy utilization method, is playing an increasingly important role in the energy field. Wind turbines convert wind energy into mechanical energy through blades, and then into electrical energy through generators. The aerodynamic performance of the blades directly determines the wind energy capture efficiency and power generation efficiency, and is one of the core components of wind turbines. In recent years, in order to improve the efficiency of wind energy utilization, wind turbine blades have been developing towards larger and more complex sizes, which has placed higher demands on the aerodynamic design and performance optimization of the blades.

[0003] To address the aforementioned issues, existing patents offer solutions. However, existing wind turbine blade aerodynamic simulation test benches typically lack automatic sand-clearing structures when conducting wind and sand simulation experiments. This makes it difficult to continuously remove accumulated sand generated during the experiment, leading to sand particles accumulating inside the simulation chamber and clogging the measuring equipment, thus affecting the accuracy of aerodynamic parameter acquisition. Furthermore, existing wind turbine blade aerodynamic simulation test benches usually employ bolt-type or rigid snap-fit ​​sealing structures, which are not conducive to quickly sealing and opening the simulation chamber. This results in cumbersome experimental preparation procedures and affects experimental efficiency.

[0004] To address this, an aerodynamic simulation test bench for wind turbine blades is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a wind turbine blade aerodynamic simulation test bench, which solves the problems of existing wind turbine blade aerodynamic simulation test benches, which usually lack an automatic sand removal structure when conducting wind and sand simulation experiments. This makes it inconvenient to continuously remove accumulated sand generated during the experiment, resulting in sand particles accumulating in the simulation chamber and clogging the measuring equipment, affecting the accuracy of aerodynamic parameter acquisition. In addition, existing wind turbine blade aerodynamic simulation test benches usually use bolt-type or rigid snap-on sealing structures, which are not convenient for quickly sealing and opening the simulation chamber, resulting in cumbersome experimental preparation procedures and affecting experimental efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an aerodynamic simulation test bench for wind power generation fan blades, including a simulation box, wherein a wind and sand simulation component is provided inside the simulation box, and a sealing component is provided on the outside of the simulation box;

[0007] The sandstorm simulation component includes a support base fixedly connected inside the simulation box. A sand storage box is fixedly connected to the top of the support base, and a sand guide pipe is connected to the bottom of the sand storage box. A drive motor is fixedly connected inside the simulation box, and a drive screw is fixedly connected to the output end of the drive motor. A sand cleaning brush plate is threadedly connected to the outer side of the drive screw. The sand cleaning brush plate is located to the left of the sand guide pipe. A sand collection box is fixedly connected inside the simulation box, and the sand collection box is located at the bottom of the sand cleaning brush plate. A sand filter plate is fixedly connected to the left side of the sand cleaning brush plate.

[0008] Preferably, the sealing assembly includes a sealing cover slidably connected to the outside of the simulation chamber, with rotating seats fixedly connected to both sides of the top of the sealing cover, and a fixed seat rotatably connected to the top of the rotating seats.

[0009] Preferably, a fixed support rod is slidably connected to the top of the fixed base, a fixed locking block is fixedly connected to the bottom of the fixed support rod, and a connecting bracket is fixedly connected to the top of the simulation box, with the fixed locking block engaging with the connecting bracket.

[0010] Preferably, a compression spring is fixedly connected inside the fixed base, and the compression spring is located on the outside of the fixed support rod.

[0011] Preferably, a drive electric cylinder is fixedly connected to the bottom side inside the simulation box, the output end of the drive electric cylinder is fixedly connected to an experimental platform, and a fan blade fixing component is fixedly connected to the rear side of the experimental platform.

[0012] Preferably, a drive power supply is fixedly connected to the right side of the simulation box, and a simulation fan is fixedly connected to the inside of the simulation box, with the simulation fan electrically connected to the drive power supply.

[0013] Preferably, a pull rod is fixedly connected to the outer side of the sealing cover, and a transparent plate is provided on the inner side of the sealing cover.

[0014] Preferably, filter covers are fixedly connected to both sides of the simulation box, and an experimental controller is provided on the top of the simulation box.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This application improves the realism of the aerodynamic performance test of fan blades by simulating the scene of wind and sand erosion under real working conditions through the wind and sand simulation component. Compared with traditional simulation devices, it can ensure that the sand particles entering the simulation environment are uniform in size, realize the precise control of wind and sand parameters, and solve the problems of sand accumulation affecting measurement accuracy and poor experimental continuity in traditional devices.

[0017] 2. This application enables the rapid sealing and opening of the simulation chamber through the sealing component, improving the efficiency of experimental preparation. Compared with the traditional bolt-type or rigid snap-on sealing structure, it achieves a more stable sealing effect and stronger airtightness, solving the problems of cumbersome operation, low sealing reliability, and inability to intuitively observe the experimental process of traditional sealing devices. Attached Figure Description

[0018] Figure 1 This is an overall structural diagram of the wind power generation fan blade aerodynamic simulation experimental platform of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the sandstorm simulation component of this utility model;

[0020] Figure 3 This is a schematic diagram of the sealing assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the experimental platform of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the simulation box of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the sandbox for collecting sand according to this utility model.

[0024] In the diagram, 1. Simulation box; 2. Filter cover; 3. Experimental controller; 4. Sandstorm simulation component; 401. Support base; 402. Sand storage box; 403. Sand guide pipe; 404. Drive motor; 405. Drive screw; 406. Sand cleaning brush; 407. Sand collection box; 408. Sand filter screen; 5. Sealing component; 501. Sealing cover; 502. Rotating seat; 503. Fixed seat; 504. Fixed support rod; 505. Fixed clip; 506. Connecting clip; 507. Compression spring; 6. Drive cylinder; 7. Experimental table; 8. Fan blade fixing component; 9. Drive power supply; 10. Simulated fan; 11. Pull rod; 12. Transparent plate. Detailed Implementation

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

[0026] Please see Figure 1-6 The present invention provides the following technical solution:

[0027] A wind turbine blade aerodynamic simulation test bench 7 includes a simulation box 1, with a wind and sand simulation component 4 installed inside the simulation box 1 and a sealing component 5 installed on the outside of the simulation box 1.

[0028] The sandstorm simulation component 4 includes a support base 401 fixedly connected inside the simulation box 1. A sand storage box 402 is fixedly connected to the top of the support base 401. A sand guide pipe 403 is connected to the bottom of the sand storage box 402. A drive motor 404 is fixedly connected inside the simulation box 1. A drive screw 405 is fixedly connected to the output end of the drive motor 404. A sand cleaning brush 406 is threadedly connected to the outside of the drive screw 405. The sand cleaning brush 406 is located to the left of the sand guide pipe 403. A sand collection box 407 is fixedly connected inside the simulation box 1. The sand collection box 407 is located at the bottom of the sand cleaning brush 406. A sand filter screen 408 is fixedly connected to the left side of the sand cleaning brush 406.

[0029] In this embodiment: Sand particles used for wind and sand simulation are stored in the sand storage box 402. The sand particles inside fall freely through the bottom sand guide pipe 403 and mix with the airflow generated by the simulated fan 10 to form a sand flow. This flow impacts the fan blade surface to simulate wind and sand interference. After the fan blades operate, the sand particles are blown by the airflow towards the sand filter plate 408 on the left side of the sand cleaning brush plate 406. The sand filter plate 408 intercepts the sand particles and filters out large particles of impurities. At this time, the drive motor 404 starts, and the drive screw 405 at its output end rotates, driving the threaded sand cleaning brush plate 406 to make horizontal reciprocating motion along the left side of the sand guide pipe 403. Then, the bristles of the sand brush plate 406 sweep the sand particles attached to the surface of the sand filter plate 408 into the sand collection box 407 below. This realizes the simulation of the wind and sand environment and the cyclic cleaning of sand particles, ensuring that the experiment can continue and the data is not affected by sand accumulation.

[0030] Specifically, such as Figure 3 As shown, the sealing assembly 5 includes a sealing cover 501 that is slidably connected to the outside of the simulation box 1. Rotating seats 502 are fixedly connected to both sides of the top of the sealing cover 501, and a fixed seat 503 is rotatably connected to the top of the rotating seat 502.

[0031] Specifically, such as Figure 3 As shown, a fixed support rod 504 is slidably connected to the top of the fixed base 503, a fixed block 505 is fixedly connected to the bottom of the fixed support rod 504, and a connecting bracket 506 is fixedly connected to the top of the simulation box 1. The fixed block 505 and the connecting bracket 506 are engaged.

[0032] Specifically, such as Figure 3 As shown, a compression spring 507 is fixedly connected inside the fixed base 503, and the compression spring 507 is located on the outside of the fixed support rod 504.

[0033] In this embodiment: After the sealing cover 501 is slidably covered by the pull rod 11 to cover the simulation box 1, the fixed seat 503 on the rotating seat 502 at the top of the sealing cover 501 is rotated so that the fixing block 505 at the bottom of the fixed seat 503 aligns with the connecting seat 506 at the top of the simulation box 1. At the same time, the fixed support rod 504 is pulled upward. Then, the fixed support rod 504 exerts pressure on the compression spring 507 inside the fixed seat 503, causing it to compress. When the fixed seat 503 is located at the top of the connecting seat 506, the fixed support rod 504 is released, and the compression spring 507 immediately releases its elasticity, driving the fixed support rod 504 to move upward. The rod 504 and the fixing block 505 move into the connecting seat 506. Under the elastic force of the compression spring 507, the fixing block 505 is pressed tightly against the connecting seat 506, so as to achieve a tight seal between the sealing cover 501 and the simulation box 1, preventing the leakage of experimental airflow or the intrusion of external impurities. After the experiment, the fixing support rod 504 is pulled upward, the compression spring 507 is reset, and the fixing block 505 is disengaged from the connecting seat 506. Then, the sealing cover 501 is opened by sliding the pull rod 11, which facilitates the replacement of fan blades or equipment maintenance, and ensures that the sealing component 5 is reusable and the sealing effect is stable.

[0034] Specifically, such as Figure 4 As shown, a drive cylinder 6 is fixedly connected to the bottom side inside the simulation box 1, and an experimental platform 7 is fixedly connected to the output end of the drive cylinder 6. A fan blade fixing piece 8 is fixedly connected to the rear side of the experimental platform 7.

[0035] Specifically, such as Figure 5 As shown, a drive power supply 9 is fixedly connected to the right side of the simulation box 1, and a simulation fan 10 is fixedly connected to the inside of the simulation box 1. The simulation fan 10 is electrically connected to the drive power supply 9.

[0036] In this embodiment: by setting up a drive cylinder 6, an experimental platform 7, and a fan blade fixing component 8, the fan blade to be tested is installed and fixed using the fan blade fixing component 8 on the rear side of the experimental platform 7. The operator sends a command through the experimental controller 3 to extend and retract the piston rod of the drive cylinder 6, causing the experimental platform 7 to move vertically, thereby adjusting the height position of the fan blade within the simulation chamber 1 to simulate the working conditions of the fan blade under different altitudes or wind speed gradients. The precise displacement control of the drive cylinder 6 ensures that the fan blade is at the preset experimental height, providing a stable installation foundation for subsequent wind and sand simulation. By setting up a drive power supply 9 and a simulated fan 10, its simulation... The drive power supply 9 on the right side of the simulation chamber 1 supplies power to the simulated fan 10. When the experiment needs to simulate the wind environment, the operator starts the drive power supply 9 through the experimental controller 3. The current is transmitted to the simulated fan 10 through the wire, and the impeller of the simulated fan 10 starts to rotate, generating directional airflow in the simulation chamber 1. By adjusting the output power of the drive power supply 9 or the parameter settings of the experimental controller 3, the rotation speed of the simulated fan 10 can be controlled, thereby simulating natural wind environments with different wind speeds. After the airflow mixes with the sand particles released by the sandstorm simulation component 4, a sandstorm flow is formed, which acts on the surface of the fan blades to achieve interference testing on the aerodynamic performance of the fan blades.

[0037] Specifically, such as Figure 1 As shown, a pull rod 11 is fixedly connected to the outer side of the sealing cover 501, and a transparent plate 12 is provided on the inner side of the sealing cover 501.

[0038] Specifically, such as Figure 6 As shown, filter covers 2 are fixedly connected to both sides of the simulation box 1, and an experimental controller 3 is installed on the top of the simulation box 1.

[0039] In this embodiment: By setting up a pull rod 11 and a transparent plate 12, when it is necessary to close the simulation box 1, the operator holds the pull rod 11 and pushes it inward. The sealing cover 501 slides along the guide rail on the outside of the simulation box 1 until it completely covers the top and sides of the simulation box 1. The transparent plate 12 on the inner side of the sealing cover 501 is made of high-strength tempered glass. During the experiment, the operator can observe the running status of the fan blades, the distribution of wind and sand flow, and the impact effect of sand particles on the fan blades through the transparent plate 12, providing a visual window for experimental observation. By setting up the filter cover 2 and the experimental... The controller 3, when the simulated fan 10 is running, the airflow inside the chamber circulates through the filter cover 2. The filter can intercept sand, dust and other impurities in the air, preventing debris from clogging the fan or affecting the accuracy of the measuring equipment, and keeping the air inside the simulation chamber 1 clean. At the same time, the experimental controller 3 on the top of the simulation chamber 1 integrates an electronic control system. The operator can set parameters such as the lifting height of the drive cylinder 6, the wind speed of the simulated fan 10, and the operating mode of the drive motor 404 through the touch screen. At the same time, it can receive and display the measurement data of the aerodynamic parameters of the fan blades in real time, and perform automated control and data processing of the experimental process.

[0040] Working principle: In the process of using the wind turbine blade aerodynamic simulation test bench 7, the blade to be tested must first be installed on the test bench 7 using the blade fixing component 8. The test bench 7 is supported by the drive cylinder 6, and its height can be adjusted according to experimental requirements to simulate the blade position under different working conditions. After installation, the operator pulls the pull rod 11 on the outside of the sealing cover 501, causing the sealing cover 501 to slide along the outside of the simulation box 1 until it completely covers the simulation box 1. Then, the operator rotates the fixing seat 503 on the rotating seat 502 at the top of the sealing cover 501, so that the fixing block 505 at the bottom of the fixing seat 503 aligns with the connecting seat 506 at the top of the simulation box 1. At the same time, the fixing support rod 504 is pulled upwards. Then, the fixing support rod 504 aligns with the fixing seat 506. The internal compression spring 507 generates pressure, compressing the fixed seat 503. When the fixed seat 503 is at the top of the connecting bracket 506, the fixed support rod 504 is released, and the compression spring 507 immediately releases its elastic force, driving the fixed support rod 504 and the fixed bracket 505 to move into the connecting bracket 506. Under the elastic force of the compression spring 507, the fixed bracket 505 is tightly pressed against the connecting bracket 506, achieving a tight seal between the sealing cover 501 and the simulation chamber 1, preventing the leakage of experimental airflow or the intrusion of external impurities. The transparent plate 12 inside the sealing cover 501 allows the operator to observe the experimental situation inside the simulation chamber 1 in real time. Then, the simulation fan 10 is started through the experimental controller 3. The simulation fan 10 is electrically connected to the drive power supply 9. After starting, it can... Simulated wind is generated inside simulation chamber 1 to provide an airflow environment for the aerodynamic simulation of the fan blades. Simultaneously, sand stored inside its sand storage box 402 is transported downwards through a sand guide pipe 403 connected to the bottom. The sand falling from the sand guide pipe 403 mixes with the airflow generated by the simulated fan 10 to form a sandstorm, directly impacting the fan blade surface and interfering with its operation. Subsequently, under the action of the fan's airflow, this sand is blown towards the surface of the sand filter plate 408 located to the left of the sand cleaning brush plate 406. The sand filter plate 408 filters and intercepts the sand, preventing the accumulation of large particles and simulating the aerodynamic performance of the fan blades under sandstorm conditions in a real-world scenario. During the experiment, the aerodynamic parameters generated by the fan blades under the action of sandstorm and airflow can be collected through relevant measuring equipment. Device 3 can receive and process this data in real time, and simultaneously start the drive motor 404. Since the sand cleaning brush 406 is threadedly connected to the drive screw 405, the rotational motion of the drive screw 405 is converted into a horizontal reciprocating linear motion of the sand cleaning brush 406 along the left side of the sand guide pipe 403. The brush bristles sweep the sand attached to the surface of the filter screen 408 into the sand collection box 407 below. The sand collection box 407 is located directly below the movement trajectory of the sand cleaning brush 406, which ensures that the swept sand particles fall accurately into the box for easy subsequent centralized cleaning. The filter covers 2 on both sides of the simulation box 1 can filter the air entering and exiting the simulation box 1 to keep the internal environment clean and prevent debris from entering and affecting the operation of the equipment. After the experiment, pull the fixed support rod 504 upward.Next, the retaining block 505 disengages from the connecting bracket 506, allowing the sealing cover 501 to be slid open via the pull rod 11. This enables maintenance or blade replacement of the interior of the simulation chamber 1, preparing for the next experiment.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wind turbine blade aerodynamic simulation test bench (7), comprising a simulation box (1), characterized in that: The simulation box (1) is equipped with a sandstorm simulation component (4) inside and a sealing component (5) is provided on the outside of the simulation box (1). The sandstorm simulation component (4) includes a support base (401) fixedly connected inside the simulation box (1). A sand storage box (402) is fixedly connected to the top of the support base (401). A sand guide pipe (403) is connected to the bottom of the sand storage box (402). A drive motor (404) is fixedly connected inside the simulation box (1). A drive screw (405) is fixedly connected to the output end of the drive motor (404). A sand cleaning brush plate (406) is threadedly connected to the outside of the drive screw (405). The sand cleaning brush plate (406) is located to the left of the sand guide pipe (403). A sand collection box (407) is fixedly connected inside the simulation box (1). The sand collection box (407) is located at the bottom of the sand cleaning brush plate (406). A sand filter plate (408) is fixedly connected to the left side of the sand cleaning brush plate (406).

2. The aerodynamic simulation test bench (7) for wind power generation fan blades according to claim 1, characterized in that: The sealing assembly (5) includes a sealing cover (501) that is slidably connected to the outside of the simulation box (1). Rotating seats (502) are fixedly connected to both sides of the top of the sealing cover (501), and a fixed seat (503) is rotatably connected to the top of the rotating seat (502).

3. The aerodynamic simulation test bench (7) for wind power generation fan blades according to claim 2, characterized in that: The top of the fixed base (503) is slidably connected to a fixed support rod (504), the bottom of the fixed support rod (504) is fixedly connected to a fixed block (505), the top of the simulation box (1) is fixedly connected to a connecting card seat (506), and the fixed block (505) is engaged with the connecting card seat (506).

4. The aerodynamic simulation test bench (7) for wind power generation fan blades according to claim 3, characterized in that: A compression spring (507) is fixedly connected inside the fixed base (503), and the compression spring (507) is located on the outside of the fixed support rod (504).

5. The aerodynamic simulation test bench (7) for wind power generation fan blades according to claim 1, characterized in that: A drive cylinder (6) is fixedly connected to the bottom side inside the simulation box (1), and an experimental platform (7) is fixedly connected to the output end of the drive cylinder (6). A fan blade fixing piece (8) is fixedly connected to the rear side of the experimental platform (7).

6. The aerodynamic simulation test bench (7) for wind power generation fan blades according to claim 1, characterized in that: A drive power supply (9) is fixedly connected to the right side of the simulation box (1), and a simulation fan (10) is fixedly connected to the inside of the simulation box (1). The simulation fan (10) is electrically connected to the drive power supply (9).

7. The aerodynamic simulation test bench (7) for wind power generation fan blades according to claim 2, characterized in that: A pull rod (11) is fixedly connected to the outside of the sealing cover (501), and a transparent plate (12) is provided on the inside of the sealing cover (501).

8. The aerodynamic simulation test bench (7) for wind power generation fan blades according to claim 1, characterized in that: The simulation box (1) is fixedly connected to filter covers (2) on both sides, and the simulation box (1) is equipped with an experimental controller (3) on the top.

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