Static vertical deformation measuring device for wind turbine generator base

Abstract

The utility model discloses a static vertical deformation measuring device for a wind turbine generator set base, which comprises a front base, a rear base, a magnetic white board, a laser level meter, a first laser range finder and a second laser range finder, and is characterized in that the magnetic white board is vertically mounted on the top surface of the front base and is positioned on one side close to a hub; a plurality of target measuring points are preset on the top face of the rear machine base, the laser gradienters are sequentially installed on the target measuring points, the first laser range finders are arranged on the laser gradienters, and the second laser range finders are arranged on the magnetic white board. The device can effectively solve the problems that static vertical deformation measurement of the wind turbine generator base is difficult, low in precision and complex in operation.

Description

Technical Field

[0001] This utility model relates to the technical field of wind power generation, and in particular to a static vertical deformation measuring device for wind turbine base. Background Technology

[0002] During the manufacturing and operation of wind turbine generator sets, the static vertical deformation of the base under the gravity of large components such as the gearbox and generator directly affects the structural safety and operational stability of the unit. Traditional deformation measurement methods mostly rely on contact sensors or measurements in a single environment, which have the following problems:

[0003] 1. Installation difficulties: There is nowhere to install contact displacement gauges on wind turbines, making them unsuitable for this special measurement scenario;

[0004] 2. Insufficient accuracy: Mechanical measuring tools are easily affected by environmental interference, resulting in larger errors;

[0005] 3. Complex operation: requires multiple installations of the equipment and is difficult to adapt to different scenarios.

[0006] Therefore, there is an urgent need for a high-precision, highly adaptable, and easy-to-implement static vertical deformation measurement device. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a static vertical deformation measuring device for wind turbine bases, which can effectively solve the problems of difficulty, low accuracy and complicated operation in measuring the static vertical deformation of wind turbine bases.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] A device for measuring the static vertical deformation of a wind turbine base includes a front base, a rear base, a magnetic whiteboard, a laser level, a first laser rangefinder, and a second laser rangefinder. The magnetic whiteboard is vertically mounted on the top surface of the front base, located on the side closest to the hub. The top surface of the rear base has multiple target measurement points pre-set. The laser level is sequentially installed at each target measurement point to project a laser beam horizontally onto the magnetic whiteboard at each target measurement point. The first laser rangefinder is mounted on the laser level to measure the vertical distance between the laser beam point on the magnetic whiteboard and the top surface of the front base. The second laser rangefinder is mounted on the magnetic whiteboard to measure the vertical distance between the laser level light source position and the target measurement point.

[0010] Furthermore, the laser level has a built-in three-way leveling device for adjusting the level of the laser level.

[0011] A static vertical deformation measuring device for a wind turbine base includes a front base, a rear base, a magnetic whiteboard, a laser level, a first laser rangefinder, and a second laser rangefinder. The top surface of the rear base has multiple target measuring points pre-set. The magnetic whiteboard is vertically installed sequentially at each target measuring point. The laser level is installed on the top surface of the front base, located near the hub, and is used to project laser beams horizontally onto the magnetic whiteboard at each target measuring point. The first laser rangefinder is mounted on the magnetic whiteboard and is used to measure the vertical distance between the laser beam point on the magnetic whiteboard and the target measuring point. The second laser rangefinder is mounted on the laser level and is used to measure the vertical distance between the laser level's light source position and the top surface of the front base.

[0012] Furthermore, the laser level has a built-in three-way leveling device for adjusting the level of the laser level.

[0013] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0014] 1. The measuring device of this utility model has the advantages of simple structure, convenient operation, low cost, and applicability to various working conditions in bases and wind farms. It can effectively solve the problem that there is nowhere to install contact displacement gauges on wind turbine generators, which makes it difficult to measure the static vertical deformation of the wind turbine generator base.

[0015] 2. The measuring device of this utility model adopts non-contact measurement with laser equipment, which avoids mechanical interference with the structure of the fan itself, improves accuracy and safety, and the accuracy of the laser equipment can reach the millimeter level. The error is further reduced by averaging multiple measurements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the measuring device in Example 1.

[0017] Figure 2 This is a schematic diagram of the measuring device in Example 2. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0019] Example 1:

[0020] like Figure 1As shown, this embodiment provides a static vertical deformation measurement device for wind turbine bases, suitable for measuring the vertical deformation of horizontally placed wind turbine bases after final assembly at a production base. The testing device includes a front base 1, a rear base 2, a magnetic whiteboard 3, a laser level 4, a first laser rangefinder 5, and a second laser rangefinder 6. The magnetic whiteboard 3 is vertically installed on the top surface of the front base 1 and located on the side close to the hub. The top surface of the rear base 2 has multiple target measurement points preset. The laser level 4 is installed sequentially at each target measurement point to project a laser beam horizontally onto the magnetic whiteboard 3 at each target measurement point. The first laser rangefinder 5 is set on the laser level 4 to measure the vertical distance between the laser beam point on the magnetic whiteboard 3 and the top surface of the front base 1. The second laser rangefinder 6 is set on the magnetic whiteboard 3 to measure the vertical distance between the light source position of the laser level 4 and the target measurement point.

[0021] The laser level has a built-in three-way leveling device for adjusting its horizontal position.

[0022] The installation and usage method of the measuring device in this embodiment is as follows:

[0023] S1.1 A magnetic whiteboard is vertically installed on the top surface of the front base near the wheel hub for displaying the laser beam emitted by the laser level.

[0024] S1.2 Select several target measurement points on the top surface of the rear base. In this embodiment, six points are used as an example. Clean the surface of the measurement points.

[0025] S1.3 Fix the laser level to any target measurement point, level it and turn on the laser level, adjust the emission angle so that the 635nm laser beam is horizontally projected onto the effective measurement area of ​​the magnetic whiteboard.

[0026] S1.4. Use the first laser rangefinder to measure the vertical distance d1 between the laser beam point on the magnetic whiteboard and the top surface of the front base, and use the second laser rangefinder to measure the vertical distance d2 between the laser level light source position and the target measuring point. Take the average value after three measurements.

[0027] S1.5. Retrieve the three-dimensional digital model of the unit and measure the theoretical vertical distance d0 between the target measuring point and the installation position of the magnetic whiteboard;

[0028] S1.6 Repeat steps S1.3 to S1.6 to measure the vertical distance d1, vertical distance d2 and theoretical vertical distance d0 of the remaining target measurement points in sequence;

[0029] S1.7 Calculate the deformation Δd of the corresponding target measuring point based on the vertical distance d1, vertical distance d2 and theoretical vertical distance d0. Δd = d0 - (d1 - d2) = d0 - d1 + d2. Generate a deformation distribution map based on the deformation of all target measuring points to verify the stability of the base structure.

[0030] Example 2:

[0031] like Figure 2 As shown, this embodiment provides a static vertical deformation measurement device for wind turbine bases, suitable for measuring the vertical deformation of wind turbine bases after hoisting in a wind farm. The testing device includes a front base 1, a rear base 2, a magnetic whiteboard 3, a laser level 4, a first laser rangefinder 5, and a second laser rangefinder 6. The top surface of the rear base 2 has multiple target measurement points preset. The magnetic whiteboard 3 is vertically installed at each target measurement point in sequence. The laser level 4 is installed on the top surface of the front base 1 and located on the side near the hub. It is used to project laser beams horizontally onto the magnetic whiteboard 3 installed at each target measurement point in sequence. The first laser rangefinder 5 is set on the magnetic whiteboard 3 and is used to measure the vertical distance between the laser beam point on the magnetic whiteboard 3 and the target measurement point. The second laser rangefinder 6 is set on the laser level 4 and is used to measure the vertical distance between the light source position of the laser level 4 and the top surface of the front base 1.

[0032] The laser level has a built-in three-way leveling device for adjusting its horizontal position.

[0033] The installation and usage method of the measuring device in this embodiment is as follows:

[0034] S2.1. A laser level is vertically installed on the top surface of the front base near the wheel hub. The equipment is leveled by a three-way leveling device.

[0035] S2.2 Select several target measurement points on the top surface of the rear base. In this embodiment, six points are used as an example. Clean the surface of the measurement points.

[0036] S2.3. Install the magnetic whiteboard vertically at any target measurement point, turn on the laser level, and adjust the emission angle so that the 635nm laser beam is horizontally projected onto the effective measurement area of ​​the magnetic whiteboard.

[0037] S2.4. Use the first laser rangefinder to measure the vertical distance d′1 between the laser beam point on the magnetic whiteboard and the target measuring point, and use the second laser rangefinder to measure the vertical distance d′2 between the laser level light source position and the top surface of the front base. Take the average value after three measurements.

[0038] S2.5. Retrieve the three-dimensional digital model of the unit and measure the theoretical vertical distance d0 between the target measuring point and the installation position of the magnetic whiteboard;

[0039] S2.6 Repeat steps S2.3 to S2.6 to measure the vertical distance d′1, vertical distance d′2 and theoretical vertical distance d0 of the remaining target measurement points in sequence;

[0040] S2.7 Calculate the deformation △d′ of the corresponding target measuring point based on the vertical distance d′1, vertical distance d′2 and theoretical vertical distance d0. △d′=d′1-d′2-d0. Generate a deformation distribution map based on the deformation of all target measuring points to verify the stability of the base structure.

[0041] The above description is only a preferred embodiment of this utility model patent, but the protection scope of this utility model patent is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in this utility model patent, based on the technical solution and utility model patent concept of this utility model patent, shall fall within the protection scope of this utility model patent.

Claims

1. A device for measuring the static vertical deformation of a wind turbine base, characterized in that, The system includes a front base, a rear base, a magnetic whiteboard, a laser level, a first laser rangefinder, and a second laser rangefinder. The magnetic whiteboard is vertically mounted on the top surface of the front base, located near the wheel hub. The top surface of the rear base has multiple target measurement points pre-set. The laser level is sequentially mounted on each target measurement point to project a laser beam horizontally onto the magnetic whiteboard at each target measurement point. The first laser rangefinder is mounted on the laser level to measure the vertical distance between the laser beam point on the magnetic whiteboard and the top surface of the front base. The second laser rangefinder is mounted on the magnetic whiteboard to measure the vertical distance between the laser level light source position and the target measurement point.

2. The wind turbine base static vertical deformation measuring device according to claim 1, characterized in that: The laser level has a built-in three-way leveling device for adjusting its horizontal state.

3. A device for measuring the static vertical deformation of a wind turbine base, characterized in that, The device includes a front base, a rear base, a magnetic whiteboard, a laser level, a first laser rangefinder, and a second laser rangefinder. The top surface of the rear base has multiple target measurement points pre-set. The magnetic whiteboard is vertically installed sequentially at each target measurement point. The laser level is installed on the top surface of the front base, located near the wheel hub, and is used to project laser beams horizontally onto the magnetic whiteboard at each target measurement point. The first laser rangefinder is mounted on the magnetic whiteboard and is used to measure the vertical distance between the laser beam point on the magnetic whiteboard and the target measurement point. The second laser rangefinder is mounted on the laser level and is used to measure the vertical distance between the laser level's light source position and the top surface of the front base.

4. The wind turbine base static vertical deformation measuring device according to claim 3, characterized in that: The laser level has a built-in three-way leveling device for adjusting its horizontal state.

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