Turning test device for wind turbine generator

Abstract

The utility model relates to a turning test device for a wind turbine generator. Comprising a test mounting base, a roller assembly is mounted at one end of the test mounting base through a bearing seat structure, and a steel wire rope is wound on the rolling surface of the roller assembly; the jigger rotor mounting end is coaxially mounted at the rotating shaft end of the roller assembly, the rotor is used for detachably mounting a jigger, the jigger stator mounting end is mounted on the test mounting base, and the stator end is used for detachably mounting the jigger; the other end of the test mounting base is fixedly connected with a hydraulic cylinder mounting seat and is pivotally connected with a servo hydraulic cylinder through the hydraulic cylinder mounting seat, the end part of a piston rod of the servo hydraulic cylinder is provided with a pulley assembly, and the test mounting base is fixedly connected with a guide fixing assembly positioned between the roller assembly and the pulley assembly; the free end of the steel wire rope bypasses the pulley assembly and then is connected with the guiding and fixing assembly. And the hydraulic station is connected with the servo hydraulic cylinder. The device can truly simulate the actual use condition of the turning gear, is high in automation degree, is higher in test precision, is convenient to use, and is small in occupied space.

Description

Technical Field

[0001] This utility model belongs to the field of wind power component testing technology, and in particular relates to a wind turbine turning test device. Background Technology

[0002] To meet the ever-increasing demand for electricity, wind turbine generators are being installed more and more frequently, and the size and weight of wind turbine blades are getting larger and larger. As a result, the method of hoisting the entire wind turbine is no longer suitable. Instead, single-blade hoisting is used, which means that the main body of the generator is first installed on the top of the tower, and then each blade is hoisted and installed one by one.

[0003] Under current technological conditions, single blades are typically installed horizontally, requiring the hub and blade mounting holes to be perfectly horizontal. Due to space and cost constraints, wind turbines themselves lack this capability before installation and commissioning, necessitating an external turning gear. The turning gear is used to tow and pull the wind turbine, causing the rotor to rotate. This requires the turning gear to have sufficient driving capacity. Currently, common turning gears on the market are either electrically driven or powered by hydraulic motors. Because the turning gear bears a significant load and bears important responsibility during blade installation, regardless of the type, it must undergo rigorous load testing after manufacturing before being used in field installations.

[0004] Currently, there are two common testing benches with different principles and structural types. One type of testing bench uses a steel wire rope to pull a heavy object as a load, and a turning trolley vertically pulls and lowers the heavy object to test the turning trolley's load-bearing capacity. However, this testing method cannot simulate the load changes during the actual use of the turning trolley, and therefore cannot test the turning trolley's adaptability to dynamic loads. The other type of testing bench uses a load installed at one end of a longer lever arm, and the turning trolley drives the other end of the lever arm to rotate this heavy object to test the turning trolley's power capability. Although the above testing methods can simulate the dynamic load during the turning trolley's operation, they require a longer lever arm, which places greater demands on the height of the plant and the surrounding test space, increasing the manufacturer's investment costs. Therefore, there is an urgent need to design a wind turbine turning trolley testing device to solve the above problems. Utility Model Content

[0005] This invention provides a wind turbine turning gear testing device with a reasonable structural design and small footprint to solve the technical problems existing in the prior art. This invention can realistically simulate the actual operating conditions of turning gear operation, has a high degree of automation, high testing accuracy, and is easy to use.

[0006] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: A wind turbine turning test device includes a test mounting base, a roller assembly mounted on one end of the test mounting base through a bearing seat structure, and a steel wire rope wound on the rolling surface of the roller assembly; it also includes a turning rotor mounting end coaxially mounted on the rotating shaft end of the roller assembly for detachably mounting the turning rotor, and a turning stator mounting end mounted on the test mounting base for detachably mounting the turning stator end; a hydraulic cylinder mounting seat is fixedly connected to the other end of the test mounting base, and a servo hydraulic cylinder is pivotally connected to the hydraulic cylinder mounting seat; a pulley assembly is mounted on the piston rod end of the servo hydraulic cylinder; a guide fixing assembly located between the roller assembly and the pulley assembly is fixedly connected to the test mounting base; the free end of the steel wire rope passes around the pulley assembly and is connected to the guide fixing assembly; and it also includes a hydraulic station connected to the servo hydraulic cylinder.

[0007] The advantages and positive effects of this utility model are as follows: This utility model provides a wind turbine turning test device. The test device can be connected to the turning stator via a set turning stator mounting end; the test device can be connected to the turning rotor via a set turning rotor mounting end; the synchronous rotation of the turning rotor and the roller assembly is achieved through a rotating roller assembly connected to the test mounting base; the linkage between the roller assembly and the servo hydraulic cylinder is achieved through a set guide fixing assembly, pulley assembly, servo hydraulic cylinder, and the steel wire rope wound on the roller assembly. That is, the retraction of the piston rod of the servo hydraulic cylinder can pull the roller assembly to rotate, thereby driving the turning rotor to rotate. The rotation of the turning rotor drives the roller assembly to rotate synchronously, which can pull out the piston rod of the servo hydraulic cylinder. With the hydraulic station, the servo hydraulic cylinder can achieve precise control of position, speed, and force, thus realistically simulating the actual operating conditions of the turning turbine. It has a high degree of automation, high test accuracy, is easy to use, and occupies little space.

[0008] Preferably, the roller assembly includes a roller body rotatably connected to the bearing housing structure, a rotating rotor mounting end coaxially connected to the roller body, and an annular roller surface partition in the middle of the roller surface of the roller body, dividing the roller surface of the roller body into two rope winding areas. Steel wire rope is wound in each rope winding area, and the free end of the steel wire rope passes through the guide fixing assembly, passes around the pulley assembly, and is connected to the guide fixing assembly in sequence.

[0009] Preferably, the guide fixing assembly includes a fixed wheel seat fixedly attached to the test mounting base, two fixed pulleys arranged in parallel rotatably connected to the fixed wheel seat, and a detachable buckle mechanism for installing the free end of the wire rope.

[0010] Preferably, the shackle mechanism includes a shackle mounting plate, a large shackle is mounted on one end of the shackle mounting plate and is detachably connected to the fixed wheel seat through the shackle, and two small shackles are mounted on the other end of the shackle mounting plate for mounting the free end of the wire rope.

[0011] Preferably, the pulley assembly includes a movable wheel seat pivotally connected to the piston rod end of the servo hydraulic cylinder, two movable pulleys arranged side by side are mounted on the movable wheel seat, and two anti-jump bars respectively mounted on both sides of the movable pulleys are mounted on the movable wheel seat.

[0012] Preferably, the rotating rotor mounting end includes a rotating shaft portion connected to the rotating shaft end of the roller assembly, a mounting plate is fixedly connected to the outer end of the rotating shaft portion, and a number of reinforcing ribs distributed circumferentially are provided between the mounting plate and the rotating shaft portion; a number of first mounting holes with various apertures are opened on the surface of the mounting plate for mounting rotating scooters of different specifications and sizes.

[0013] Preferably, it also includes a pressure sensor installed between the pulley assembly and the piston rod of the servo hydraulic cylinder; an encoder installed on the test mounting base for detecting the rotational speed of the drum assembly; and a displacement sensor for measuring rotor displacement data during turning operation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a top view of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the main structure of this utility model.

[0017] In the diagram: 1. Roller assembly; 1-1. Roller surface partition; 1-2. Roller body; 2. Bearing seat structure; 3. Rotor mounting end; 3-1. First mounting hole; 4. Wire rope; 5. Stator mounting end; 5-1. Second mounting hole; 6. Guide fixing assembly; 6-1. Fixed pulley; 6-2. Fixed wheel seat; 6-3. Shackle mechanism; 7. Pulley assembly; 7-1. Movable pulley; 7-2. Movable wheel seat; 8. Servo hydraulic cylinder; 9. Hydraulic cylinder mounting base; 10. Test mounting base; 11. Hydraulic station. Detailed Implementation

[0018] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided in detail:

[0019] Please see Figure 1 and Figure 2The wind turbine turning test device of this utility model includes a test mounting base 10. A roller assembly 1 is mounted on one end of the test mounting base 10 via a bearing seat structure 2, and a steel wire rope 4 is wound on the rolling surface of the roller assembly 1. It also includes a turning rotor mounting end 3 coaxially mounted on the shaft end of the roller assembly 1 for detachably mounting the turning rotor, and a turning stator mounting end 5 mounted on the test mounting base 10 for detachably mounting the stator end of the turning turbine. Several second mounting holes 5-1 are provided on the turning stator mounting end 5, and bolts and lock nuts passing through the second mounting holes 5-1 are detachably connected to the stator end of the turning turbine.

[0020] A hydraulic cylinder mounting base 9 is fixedly connected to the other end of the test mounting base 10, and a servo hydraulic cylinder 8 is pivotally connected to the hydraulic cylinder mounting base 9. The cylinder barrel of the servo hydraulic cylinder 8 is pivotally connected to the hydraulic cylinder mounting base 9 via a pin. A pulley assembly 7 is installed at the end of the piston rod of the servo hydraulic cylinder 8. A guide fixing assembly 6 located between the roller assembly 1 and the pulley assembly 7 is fixedly connected to the test mounting base 10. The free end of the wire rope 4 passes around the pulley assembly 7 and is connected to the guide fixing assembly 6. The test mounting base 10 also includes a hydraulic station 11 connected to the servo hydraulic cylinder 8.

[0021] like Figure 1 and Figure 2 As shown, in this embodiment, the roller assembly 1 includes a roller body 1-2 rotatably connected to the bearing housing structure 2. The rotating rotor mounting end 3 is coaxially connected to the roller body 1-2. An annular roller surface partition 1-1 is provided in the middle of the roller surface of the roller body 1-2, dividing the roller surface of the roller body 1-2 into two rope winding areas. A steel wire rope 4 is wound in each rope winding area, and the free end of the steel wire rope 4 passes through the guide fixing assembly 6 in sequence, passes around the pulley assembly 7, and is connected to the guide fixing assembly 6 (e.g., ...). Figure 3 (As shown).

[0022] An encoder for real-time monitoring of the rotational speed of the roller assembly 1 is installed on the test mounting base 10; a torque sensor is also included, which is installed between the rotating shaft of the turning rotor mounting end 3 and the roller assembly 1.

[0023] like Figure 1 As shown, the aforementioned guide fixing assembly 6 includes a fixed wheel seat 6-2 fixedly attached to the test mounting base 10, two fixed pulleys 6-1 arranged in parallel rotatably connected to the fixed wheel seat 6-2, and a detachable buckle mechanism 6-3 detachably connected to the fixed wheel seat 6-2 for installing the free end of the wire rope 4.

[0024] The aforementioned shackle mechanism 6-3 includes a shackle mounting plate. A large shackle is mounted on one end of the shackle mounting plate and is detachably connected to the fixed wheel seat 6-2 via the shackle. Two small shackles are mounted on the other end of the shackle mounting plate for mounting the free end of the wire rope 4.

[0025] like Figure 1 As shown, the pulley assembly 7 includes a movable wheel seat 7-2 pivotally connected to the piston rod end of the servo hydraulic cylinder 8. Two movable pulleys 7-1 are mounted side-by-side on the movable wheel seat 7-2. It also includes two anti-jump rods mounted on the movable wheel seat 7-2, respectively positioned on both sides of the movable pulleys 7-1. The two movable wheel seats 7-2 correspond to two fixed pulleys 6-1. A hinge joint is fixedly connected to the piston rod end of the servo hydraulic cylinder 8, and the movable wheel seat 7-2 is pivotally connected to the hinge joint via a pin.

[0026] The aforementioned rotating rotor mounting end 3 includes a rotating shaft portion connected to the rotating shaft end of the roller assembly 1. A mounting plate is fixed to the outer end of the rotating shaft portion. Several reinforcing ribs distributed circumferentially are provided between the mounting plate and the rotating shaft portion. Several first mounting holes 3-1 with various apertures are opened on the surface of the mounting plate for mounting rotating scooters of different specifications and sizes.

[0027] This embodiment also includes a pressure sensor installed between the pulley assembly 7 and the piston rod of the servo hydraulic cylinder 8, wherein the aforementioned tension / compression sensor is installed between the hinge joint and the piston rod of the servo hydraulic cylinder 8. This embodiment also includes an encoder installed on the test mounting base 10 for detecting the rotational speed of the roller assembly 1, and a displacement sensor for measuring rotor displacement data during turning gear operation. This embodiment also includes a torque sensor installed between the turning gear rotor mounting end 3 and the roller assembly 1.

[0028] The test device of this utility model has a data interface / wiring port that can be electrically connected to the control data line of the turning gear.

[0029] This embodiment also includes an electrical control console installed on the test mounting base 10. The electrical control console includes a PLC controller and a touch screen connected to the PLC controller. The PLC controller is connected to the power supply circuit. The control terminals of the servo hydraulic cylinder 8 and the drive components in the trolley are all connected to the control terminal of the PLC controller. In this embodiment, several sensors are connected to the detection terminal of the PLC controller. The PLC controller receives the detection information from the several sensors. The PLC controller acquires and displays the detection information on the touch screen. After judgment, the PLC controller automatically controls the corresponding actions of each component, or sends instructions through the touch screen. After receiving the instructions, the PLC controller controls the corresponding actions of each component.

[0030] The electrical control console, in conjunction with the hydraulic station 11, enables the turning gear to change loads at different amplitudes and frequencies. By comparing the load change curve of the turning gear with the load change curve set by the test device, the dynamic law of the turning gear can be clearly determined, thereby further calibrating the control parameters of the turning gear. This test device has a high degree of automation, is easy to use, and has high test accuracy.

[0031] The testing of this utility model is mainly divided into two aspects: active and passive loads, among which:

[0032] 1) Turning wheel drive load, test device maintains operating load: Control the power to start the turning wheel and test device, without giving any action command; set the passive load setpoint parameters or load curve of the turning wheel test device according to the turning wheel requirements, so that the turning wheel can pull out the cylinder; give the turning wheel action command to pull out the load of the test device cylinder. At this time, the speed direction of the test device is opposite to the force direction, while the movement direction of the turning wheel is the same as the force direction; observe and save the test data of the turning wheel and the test device separately for review and processing; process the saved data and recalibrate the control parameters of the turning wheel.

[0033] 2) Turning gear releases load, test device maintains operating load: Control the power to start the turning gear and test device, without giving any action commands initially; set the passive load setpoint parameters or load curve of the turning gear test device as needed; the program control simultaneously gives the actions of the turning gear and test device, the turning gear actively releases the load, and the test device maintains the operating load characteristics. At this time, the speed direction of the test device is the same as the force direction, while the speed direction of the turning gear is opposite to the force direction; observe and save the test data for review and processing; process the saved data and recalibrate the control parameters of the turning gear.

[0034] Operation process:

[0035] Place the test mounting base 10 of the test device on the factory floor. Its weight and structural rigidity ensure structural stability during use, requiring no other fixing method. Connect the hydraulic pipelines, power lines, and data lines of the hydraulic station 11 according to the design. Install the stator interface of the turning gear on the stator mounting end 5 of the turning gear and connect it with bolts and lock nuts. Install the rotor interface of the turning gear on the rotor mounting end 3 of the turning gear and connect it with bolts and lock nuts. Connect the control data line of the turning gear to the data interface reserved in the test device so that the test device can obtain control of the turning gear. Then, perform the test operation according to the above.

Claims

1. A wind turbine turning test device, characterized in that: The test mounting base (10) includes a test mounting base (10), on which a roller assembly (1) is mounted via a bearing housing structure (2) at one end, and a steel wire rope (4) is wound on the rolling surface of the roller assembly (1); it also includes a turning gear rotor mounting end (3) coaxially mounted on the shaft end of the roller assembly (1) for detachably mounting the rotor of the turning gear; and a turning gear stator mounting end (5) mounted on the test mounting base (10) for detachably mounting the stator end of the turning gear; the test mounting base (10) includes a test mounting base (10) with a bearing housing structure (2) at one end, and a steel wire rope (4) wound on the rolling surface of the roller assembly (1); The other end is fixed to a hydraulic cylinder mounting base (9) and a servo hydraulic cylinder (8) is pivotally connected to the hydraulic cylinder mounting base (9). A pulley assembly (7) is installed at the piston rod end of the servo hydraulic cylinder (8). A guide fixing assembly (6) located between the roller assembly (1) and the pulley assembly (7) is fixed on the test mounting base (10). The free end of the wire rope (4) passes around the pulley assembly (7) and is connected to the guide fixing assembly (6). It also includes a hydraulic station (11) connected to the servo hydraulic cylinder (8).

2. The wind turbine turning test device as described in claim 1, characterized in that: The roller assembly (1) includes a roller body (1-2) rotatably connected to the bearing housing structure (2), and a rotating rotor mounting end (3) coaxially connected to the roller body (1-2). A ring-shaped roller surface partition (1-1) is provided in the middle of the roller surface of the roller body (1-2) to divide the roller surface of the roller body (1-2) into two rope winding areas. A steel wire rope (4) is wound in each rope winding area, and the free end of the steel wire rope (4) passes through the guide fixing assembly (6) in sequence, passes around the pulley assembly (7), and is connected to the guide fixing assembly (6).

3. The wind turbine turning test device as described in claim 2, characterized in that: The guide fixing assembly (6) includes a fixed wheel seat (6-2) fixed on the test mounting base (10), two fixed pulleys (6-1) arranged in parallel are rotatably connected on the fixed wheel seat (6-2), and a shackle mechanism (6-3) is detachably connected on the fixed wheel seat (6-2) for installing the free end of the wire rope (4).

4. The wind turbine turning test device as described in claim 3, characterized in that: The shackle mechanism (6-3) includes a shackle mounting plate. A large shackle is installed at one end of the shackle mounting plate and is detachably connected to the fixed wheel seat (6-2) through the shackle. Two small shackles are installed at the other end of the shackle mounting plate for installing the free end of the wire rope (4).

5. The wind turbine turning test device as described in claim 2, characterized in that: The pulley assembly (7) includes a movable wheel seat (7-2) pivotally connected to the piston rod end of the servo hydraulic cylinder (8), two movable pulleys (7-1) arranged side by side are mounted on the movable wheel seat (7-2), and two anti-jump rods are mounted on the movable wheel seat (7-2) and respectively arranged on both sides of the movable pulleys (7-1).

6. The wind turbine turning test device as described in claim 1, characterized in that: The rotating rotor mounting end (3) includes a rotating shaft part connected to the rotating shaft end of the roller assembly (1), a mounting plate is fixed to the outer end of the rotating shaft part, and a number of reinforcing ribs distributed circumferentially are provided between the mounting plate and the rotating shaft part; a number of first mounting holes (3-1) with various apertures are opened on the plate surface of the mounting plate for mounting rotating cars of different specifications and sizes.

7. The wind turbine turning test device as described in claim 1, characterized in that: It also includes a pressure sensor installed between the pulley assembly (7) and the piston rod of the servo hydraulic cylinder (8); an encoder installed on the test mounting base (10) for detecting the rotational speed of the roller assembly (1); and a displacement sensor for measuring the displacement data of the rotor during the turning operation.

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