Fan impeller in-place posture adjusting and monitoring device and fan

Abstract

The utility model discloses a fan impeller in-place posture adjusting and monitoring device and a fan, a fan impeller comprises a fan hub, the fan hub is fixed at a fan cabin flange, and the adjusting and monitoring device comprises a signal tracker, a signal amplifier, a laser range finder, a camera and a visual monitoring screen. Wherein the signal tracker is in wireless connection with the signal amplifier, and the signal amplifier, the laser range finder and the camera are all in wireless connection with the visual monitoring screen; a plurality of positioning target plates are assembled on the periphery of a fan hub at equal intervals, a signal tracker, a laser range finder and a camera are all arranged on the inner side of a cabin and close to a cabin flange, and the signal tracker, the laser range finder and the camera all face the positioning target plates; according to the utility model, the visual blind area of hoisting commanders can be greatly reduced, the accuracy of commanding and judging is improved, the impeller assembly difficulty and danger are reduced, the assembly time is saved, and the hoisting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan assembly, in particular to a fan impeller in-position posture adjustment monitoring device and a fan. Background Art

[0002] With the continuous advancement of wind power technology, the wind turbine models used in wind farm projects are getting larger and larger, the size and weight of wind turbine blades are also increasing, and the wind turbine assembly equipment required is also getting larger and larger. Impeller assembly is the construction process with the highest assembly height, the largest component size, and the most stringent environmental requirements during the wind turbine assembly process. It is also the most difficult and dangerous construction operation. At present, wind turbine assembly mostly adopts the overall impeller assembly solution, that is, the impeller is assembled mechanically using a large crane and docked with the front flange of the nacelle in the air. The assembled impeller is in a flat state on the ground and needs to be turned vertically in the air to dock with the nacelle flange. Personnel are faced with the risk of high-altitude operations in the air. There are many bolts for docking the impeller with the nacelle flange, and they need to be aligned and inserted at one time, which requires high assembly accuracy. The impeller has a large windward area and will still swing slightly even in light wind conditions, requiring strict accuracy control. Due to the limited field of vision, the assembly personnel in the nacelle have a delayed feedback to the lifting command during the alignment of the impeller flange. The overall assembly weight of the impeller is relatively large, and most of the impellers are assembled at a single point, making adjustments difficult and time-consuming, which makes lifting and assembly operations difficult.

[0003] When assembling existing fans, the fan manufacturer adds 4 guide pins at the impeller flange, but manual observation and alignment are still required. In the prior art, a yaw mechanism is added inside the fan, which not only increases the weight of the assembly parts, but also affects the center of gravity of the impeller, causing the vertical state of the fan impeller assembled using the original hanging point to deviate, and it is also difficult to dismantle after assembly. In short, in the prior art, the blade offset is difficult to observe accurately, the blind spot is large, the command is not timely, and command errors are prone to occur, which affects the impeller assembly accuracy and reduces the assembly efficiency. Therefore, there is an urgent need for a monitoring device that is easy to install and disassemble and can serve as a reference for lifting command for impeller assembly operations. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a fan impeller positioning posture adjustment monitoring device and a fan. By installing a positioning target plate on the fan hub and cooperating with a signal tracker, a laser rangefinder and a camera, the impeller assembly accuracy is improved, the difficulty and danger of impeller assembly are reduced, the assembly time is saved and the assembly efficiency is improved.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] On the one hand, the present utility model provides a monitoring device for adjusting the in-place attitude of a fan impeller, including: the fan impeller includes a fan hub, and the fan hub is fixed at the flange of the fan nacelle. It is characterized by including: a signal tracker, a laser rangefinder, a camera, and a visual monitoring screen, wherein the laser rangefinder and the camera are both wirelessly connected to the visual monitoring screen;

[0007] A positioning target plate is installed on the fan hub for emitting a target plate signal. The signal tracker, the laser rangefinder, and the camera are all arranged inside the nacelle and close to the nacelle flange, and the signal tracker, the laser rangefinder, and the camera are all oriented towards the positioning target plate; the signal tracker is used to obtain the target plate signal and transmit the target plate signal to the visual monitoring screen, the laser rangefinder is used to measure the relative distance between the fan hub and the nacelle flange, and the camera is used to provide a field of view.

[0008] As a further technical solution, the signal tracker includes a metal shell, and a control module, a laser transmitter, a laser receiver, and a power module are arranged inside the metal shell. The control module is electrically connected to the laser transmitter and the laser receiver for respectively controlling the laser transmitter and the laser receiver to send azimuth signals and receive target plate signals; the power module is used to provide electrical energy for the signal tracker.

[0009] As a further technical solution, the metal shell is adsorbed on the inner side of the nacelle and close to the nacelle flange by a magnetic attraction method.

[0010] As a further technical solution, a signal amplifier is further included. The signal tracker is wirelessly connected to the signal amplifier, and the signal tracker transmits the target plate signal to the visual monitoring screen through the signal amplifier.

[0011] As a further technical solution, the signal amplifier is magnetically adsorbed on the top of the outer side of the nacelle and close to the nacelle flange.

[0012] As a further technical solution, the laser rangefinder includes a laser emitter, a fuselage, a first electric pan-tilt head, a lens module, and a first base. The first base is magnetically adsorbed on the inner side of the nacelle and close to the nacelle flange, and the first base is a metal base.

[0013] As a further technical solution, the camera is a wide-angle camera, including a camera lens, a second electric pan-tilt head, and a second base. The second base is magnetically adsorbed on the inner side of the nacelle and close to the nacelle flange, and the second base is a metal base.

[0014] As a further technical solution, four positioning target plates are installed on the fan hub, including an upper target plate, a left target plate, a lower target plate, and a right target plate.

[0015] As a further technical solution, the upper target plate, the left target plate, the lower target plate and the right target plate are respectively installed at equal distances around the wind turbine hub.

[0016] On the other hand, the present invention provides a wind turbine, including a monitoring device for adjusting the in-place attitude of a wind turbine impeller as provided in the first aspect.

[0017] One or more technical solutions of the present invention have the following beneficial effects:

[0018] (1) By installing positioning target plates around the wind turbine hub, the present invention can receive the positioning signal sent by the signal tracker, feedback the target plate signal to the signal tracker, and transmit the target plate signal to the visual monitoring screen through the signal amplifier, so as to enable the lifting commander and the crane driver to judge the real-time relative position of the impeller, perform fine-tuning operations, and complete the flange docking of the impeller and the nacelle, thereby improving the accuracy of the impeller group and further improving the assembly efficiency.

[0019] (2) The present invention is also provided with a laser rangefinder and a camera, both of which are wirelessly connected to the visual monitoring screen. The laser rangefinder is used to measure the relative distance between the wind turbine hub and the nacelle flange, guide the driver to maintain a safe distance during the alignment process of lifting the impeller, and control the speed and accuracy in the final stage of docking; the camera is used to provide an operation view, and remote control can be used to observe the lifting and docking process of the wind turbine impeller; the present invention can greatly reduce the visual blind area of the lifting commander, increase the accuracy of command judgment, reduce the difficulty and danger of impeller assembly, save assembly time and improve the lifting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specification drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0021] Figure 1 It is a schematic structural diagram of the in-place attitude adjustment monitoring device of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the signal tracker of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the camera of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the signal amplifier of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the laser rangefinder of the present invention;

[0026] Figure 6 Schematic diagram of the installation position of the positioning target plate of the present utility model;

[0027] Wherein: 1. Directional target plate; 11. Upper target plate; 12. Left target plate; 13. Lower target plate; 14. Right target plate; 2. Signal tracker; 21. Control module; 22. Metal shell; 23. Laser transmitter; 24. Laser receiver; 25. Power supply module; 3. Signal amplifier; 4. Camera; 41. Camera lens; 42. Second electric pan-tilt; 43. Second base; 5. Machine cabin; 6. Wind turbine hub; 7. Laser rangefinder; 71. Laser emitter; 72. Airframe; 73. First electric pan-tilt; 74. Lens module; 75. First base. Specific embodiments

[0028] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0029] Embodiment 1

[0030] The present utility model provides a monitoring device for adjusting the in-place attitude of a wind turbine impeller. The existing wind turbine impeller includes a wind turbine hub. When assembling the impeller, it is necessary to fix the wind turbine hub at the flange of the wind turbine cabin 5, as Figure 1 shown in the structural schematic diagram of the in-place attitude adjustment monitoring device, which includes a signal tracker 2, a laser rangefinder 7, a camera 4, and a visual monitoring screen. Among them, the laser rangefinder 7 and the camera 4 are both wirelessly connected to the visual monitoring screen. A positioning target plate is installed on the wind turbine hub 6 for emitting a target plate signal, and the signal tracker, the laser rangefinder, and the camera are all arranged inside the cabin and close to the cabin flange, and the signal tracker, the laser rangefinder, and the camera are all oriented towards the positioning target plate to ensure being directly opposite the positioning target plate without being blocked or interfered. The signal tracker is used to obtain the target plate signal and transmit the target plate signal to the visual monitoring screen. The laser rangefinder is used to measure the relative distance between the wind turbine hub and the flange of the cabin 5, and the camera is used to provide a field of view. The visual monitoring screen can be set on the ground, in the driver's cab of a hoisting machine, or in a lifting command center.

[0031] Specifically: As Figure 2As shown in the structural schematic diagram of the signal tracker, the signal tracker 2 includes a metal shell 22, which is specifically adsorbed on the inner side of the nacelle near the nacelle flange by magnetic attraction. Inside the metal shell, there are a control module 21, a laser transmitter 23, a laser receiver 24, and a power module 25. The control module 21 is electrically connected to the laser transmitter 23 and the laser receiver 24, and is used to control the laser transmitter 21 and the laser receiver 24 to send azimuth signals and receive target plate signals respectively. The power module 24 is used to supply electrical energy to the signal tracker 2. During the process of aligning the impeller with the nacelle flange, due to the iron equipment shell wrapping, the signal is easily shielded, resulting in signal interruption and discontinuity. Therefore, in this embodiment, as Figure 4 shown, the in-place attitude adjustment monitoring device further includes a signal amplifier 3. The signal tracker 2 is wirelessly connected to the signal amplifier 3, and the signal tracker 2 transmits the target plate signal to the visualization monitoring screen through the signal amplifier 3. Specifically, the signal amplifier 3 is magnetically adsorbed at the top of the outer side of the nacelle near the nacelle flange. Using the signal amplifier 3 can ensure that the visualization monitoring screen continuously and uninterruptedly receives real-time signals, thereby improving the assembly accuracy.

[0032] In this embodiment, as Figure 5 shown in the structural schematic diagram of the laser rangefinder, the laser rangefinder 7 includes a laser transmitter 71, a fuselage 72, a first electric pan-tilt 73, a lens module 74, and a first base 75. The first base 75 is magnetically adsorbed on the inner side of the nacelle 5 near the nacelle flange. In this way, the laser rangefinder 7 can be used to measure the relative distance between the wind turbine hub and the nacelle flange. At the same time, the laser rangefinder 7 can also send distance signals to the visualization monitoring screen to assist the driver in maintaining a safe distance during the alignment process of hoisting the impeller and controlling the speed and accuracy in the final docking stage. As Figure 3 shown in the structural schematic diagram of the camera, the camera 4 is a wide-angle camera, including a camera lens 41, a second electric pan-tilt 42, and a second base 43. The second base 43 is magnetically adsorbed on the inner side of the nacelle 5 near the nacelle flange. The above-mentioned first base 75 and second base 43 are preferably metal bases. The camera 4 can be remotely controlled. By controlling the second electric pan-tilt, the monitoring angle can be adjusted, so as to observe the assembly steps more clearly, and can be adjusted in time in the face of emergencies. Through wireless connection, the monitoring video can be connected to the visualization monitoring screen on the ground.

[0033] In this embodiment, as Figure 6 shown in the schematic diagram of the installation position of the positioning target plate, four positioning target plates 1 are provided, including an upper target plate 11, a left target plate 12, a lower target plate 13, and a right target plate 14, and they are equidistantly installed around the wind turbine hub 6 to cooperate with the signal tracker and the laser rangefinder to complete distance measurement and positioning.

[0034] The specific working principle of the fan impeller positioning posture adjustment monitoring device provided in this embodiment is as follows:

[0035] The upper target plate 11, the left target plate 12, the lower target plate 13 and the right target plate 14 are installed at equal distances around the fan hub. The signal tracker 2, the laser rangefinder 7 and the camera 4 are magnetically attached to the inner side of the cabin and close to the cabin flange. The visual monitoring screen is set on the ground or in the crane driver's cab or the lifting command center. The signal amplifier 3 is magnetically attached to the top of the outer side of the cabin and close to the cabin flange. After installation in the above manner, assembly begins. The signal tracker 2 begins to track the position of the positioning target plate, specifically by transmitting a positioning signal to the positioning target plate, the positioning target plate feeds back the target plate signal, the signal tracker 2 receives the target plate signal, and transmits the target plate signal to the visual monitoring screen through the signal amplifier 3. When the signal tracker starts tracking, the relative deviation is known by the rapid signal fed back by the buzzer. When it is determined to be aligned, a green light is displayed on the visual monitoring screen, and the buzzer alarm signal is released. At the same time, camera 4 conducts real-time monitoring and adjusts the monitoring angle of view by controlling the second electric pan / tilt head, so that the hoisting steps can be observed more clearly. In the face of emergencies, timely adjustments can be made and the video is connected to the visual monitoring screen on the ground. The laser rangefinder measures the relative distance between the fan hub and the nacelle flange, and sends a distance signal to the visual monitoring screen to assist and guide the driver in hoisting the impeller to maintain a safe distance during the alignment process and control the speed and accuracy in the final stage of docking. The visual monitoring screen has the functions of digital display of position information, light and sound alarm, which assists the lifting commander and the driver in guiding the hoisting.

[0036] Embodiment 2

[0037] This embodiment provides a fan, including a fan impeller position adjustment monitoring device as provided in Embodiment 1. The technical solution and technical effect of this embodiment are the same as those of Embodiment 1, and will not be described in detail here.

[0038] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A monitoring device for adjusting the installation attitude of a fan impeller, wherein the fan impeller includes a fan hub which is fixed at the flange of the fan nacelle, and is characterized in that, Including: A signal tracker, a laser rangefinder, a camera and a visualization monitor screen, wherein the laser rangefinder and the camera are both wirelessly connected to the visualization monitor screen; A positioning target plate is installed on the fan hub for emitting a target plate signal. The signal tracker, the laser rangefinder and the camera are all arranged inside the nacelle and close to the nacelle flange, and the signal tracker, the laser rangefinder and the camera are all oriented towards the positioning target plate. The signal tracker is used to obtain the target plate signal and transmit the target plate signal to the visualization monitor screen. The laser rangefinder is used to measure the relative distance between the fan hub and the nacelle flange. The camera is used to provide a field of view.

2. The monitoring device for adjusting the installation attitude of a fan impeller according to claim 1, wherein The signal tracker includes a metal shell. Inside the metal shell, a control module, a laser transmitter, a laser receiver and a power module are arranged. The control module is electrically connected to the laser transmitter and the laser receiver and is used to control the laser transmitter and the laser receiver to send azimuth signals and receive target plate signals respectively. The power module is used to provide electrical energy for the signal tracker.

3. The monitoring device for adjusting the installation attitude of a fan impeller according to claim 2, characterized in that, The metal shell is adsorbed on the inside of the nacelle and close to the nacelle flange by means of magnetic attraction.

4. The monitoring device for adjusting the in-place attitude of a fan impeller according to claim 1, characterized in that, It further includes a signal amplifier. The signal tracker is wirelessly connected to the signal amplifier, and the signal tracker transmits the target plate signal to the visualization monitor screen through the signal amplifier.

5. The monitoring device for adjusting the installation attitude of a fan impeller according to claim 4, characterized in that, The signal amplifier is magnetically adsorbed on the top of the outside of the nacelle and close to the nacelle flange.

6. The monitoring device for adjusting the in-place attitude of a fan impeller according to claim 1, wherein, The laser rangefinder includes a laser emitter, a fuselage, a first electric pan-tilt head, a lens module and a first base. The first base is magnetically adsorbed on the inside of the nacelle and close to the nacelle flange. The first base is a metal base.

7. The monitoring device for adjusting the installation attitude of a fan impeller according to claim 1, characterized in that The camera is a wide-angle camera and includes a camera lens, a second electric pan-tilt head and a second base. The second base is magnetically adsorbed on the inside of the nacelle and close to the nacelle flange. The second base is a metal base.

8. The monitoring device for adjusting the installation attitude of a fan impeller according to claim 1, characterized in that Four positioning target plates are installed on the fan hub, including an upper target plate, a left target plate, a lower target plate and a right target plate.

9. The monitoring device for adjusting the installation attitude of a fan impeller according to claim 8, characterized in that, The upper target plate, the left target plate, the lower target plate and the right target plate are respectively installed equidistantly around the fan hub.

10. A blower, characterized in that, Including a monitoring device for adjusting the in-place attitude of a fan impeller according to any one of claims 1-9.

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