Blade zero calibration tool based on proximity switch

Abstract

The utility model relates to the technical field of wind driven generator maintenance devices, and particularly discloses a blade zero calibration tool based on a proximity switch, which comprises a trigger part arranged on a blade, located on a zero graduation line of the blade and capable of synchronously rotating along with the blade; the proximity switch is arranged on the hub, is positioned on the zero graduation line of the hub and is positioned on one side of the blade; the control terminal is electrically connected with the proximity switch; wherein the trigger part rotates along with the blade, can trigger the proximity switch and transmits an electric signal to the control terminal; the power supply is used for providing electric energy; according to the utility model, the proximity switch is introduced to carry out zero calibration operation on the blade on the wind driven generator, so that the manual labor amount of workers can be effectively reduced, and the zero calibration efficiency of the blade of the wind driven generator is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wind driven generator maintenance device especially relates to a blade zero calibration tool based on proximity switch. BACKGROUND

[0002] At the moment of the vigorous development of wind power industry, intermittency and instability of power generation become the key bottleneck restricting its further development. In order to improve energy utilization efficiency and reduce production cost, wind farm is constantly exploring optimization in many aspects.

[0003] For example, how to calibrate the blade and hub of the wind driven generator, the current still needs to adopt artificial visual method. Through artificial visual calibration of the blade and hub, not only the accuracy of the blade zero position can be ensured, but also a large amount of human resources is needed, and the working efficiency is low. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model provides a blade zero calibration tool based on proximity switch, which aims to reduce the artificial labor amount of wind driven generator blade zero calibration operation.

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

[0006] A blade zero calibration tool based on proximity switch is provided, which comprises: a trigger component arranged on the blade and located on the zero scale line of the blade, capable of rotating synchronously with the blade; a proximity switch arranged on the hub and located on the zero scale line of the hub and on one side of the blade; a control terminal electrically connected with the proximity switch; wherein the trigger component rotates with the blade, can trigger the proximity switch and transmit an electrical signal to the control terminal; and a power supply for providing electrical energy.

[0007] Further, the trigger component is a metal cylinder with a diameter of 0.3cm.

[0008] Further, the proximity switch is an NPN normally open inductive proximity switch.

[0009] Further, the tool further comprises an indicating lamp electrically connected with the control terminal.

[0010] Further, the tool further comprises: a first mounting seat which is a quadrangular prism, a threaded hole for mounting the proximity switch is formed in the first mounting seat perpendicular to the central axis of the first mounting seat; an auxiliary positioning sleeve, the first mounting seat is slidably arranged in the auxiliary positioning sleeve; at least two laser indicators arranged on the auxiliary positioning sleeve, respectively located at both ends of the first mounting seat, and the light emitted by the two laser indicators is in the same plane with the central axis of the threaded hole.

[0011] Further, the tool further comprises: a magnetic component arranged at the end of the first mounting seat.

[0012] Further, the tool further comprises: an auxiliary fixing sheet, connecting the first mounting seat and the hub by welding.

[0013] The wind turbine blade zero calibration tool has the advantages that the proximity switch is introduced to perform zero calibration on the blade of the wind turbine, so that the manual labor of the workers can be effectively reduced, and the zero calibration efficiency of the blade of the wind turbine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model discloses a whole structure schematic diagram of zero calibration tool provided for the embodiment of the application.

[0015] Figure 2 The utility model discloses a mounting schematic diagram of proximity switch provided for the embodiment of the application.

[0016] Figure 3 The utility model discloses a mounting schematic diagram of trigger component provided for the embodiment of the application.

[0017] Wherein, 11, hub;12, blade;21, trigger component;22, proximity switch;31, auxiliary positioning sleeve;32, first mounting seat;321, threaded hole;33, laser pointer;34, magnetic component. DETAILED DESCRIPTION

[0018] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0019] Referring to Figure 1 The utility model discloses a kind of blade zero calibration tools based on proximity switch, comprising: trigger component 21, set up on blade 12, at the zero scale line of blade 12, can rotate with blade 12 synchronously;Proximity switch 22 is set on hub 11, at the zero scale line of hub 11, at the side of blade 12;Control terminal is electrically connected with proximity switch 22;Wherein, trigger component 21 rotates with blade 12, can trigger proximity switch 22, and pass electric signal to control terminal;Power supply is used to provide electric energy.

[0020] Specific use, with the rotation of blade 12, trigger component 21 can be close to proximity switch 22;When proximity switch 22 detects trigger component 21, the electrical parameter in the inside of proximity switch 22 changes, and output electric signal to control terminal;Staff can judge whether blade 12 is at zero position by control terminal, to realize accurate and fast zero calibration operation.

[0021] Preferably, trigger component 21 is 0.3cm metal cylinder in diameter, can be directly selected with the national standard screw of nominal diameter 3mm, is fixed on blade 12 by welding.

[0022] Preferably, the proximity switch 22 is an NPN normally open inductive proximity switch 22.

[0023] Preferably, the tool further comprises an indicating lamp, which is electrically connected with the control terminal.

[0024] It is worth mentioning that the indicating lamp, the power supply and the control terminal can be installed in the shaft control cabinet of the wind turbine.

[0025] In the embodiment, the control terminal can be a PLC (Programmable Logic Controller) or an industrial PC.

[0026] In the embodiment, the detection area covered by the proximity switch 22 is 0° to 92°, the blade 12 is pitched from 92° to 0°, the triggering part 21 at the zero scale line of the blade 12 can gradually approach the proximity switch 22 at the zero position of the hub 11 and can trigger the proximity switch 22, the proximity switch 22 transmits an electrical signal to the control terminal, and the indicating lamp in the shaft control cabinet is turned on. Conversely, when the blade 12 is pitched from 0° to 92°, the triggering part 21 is away from the proximity switch 22, and the indicating lamp is turned off.

[0027] By using the tool, the maintenance personnel can accurately judge whether the blade 12 is at the zero position by observing the on-off change of the indicating lamp, so as to realize the accurate zero calibration of the blade 12 of the wind turbine.

[0028] Referring to Figure 2 The tool further comprises: a first mounting seat 32, which is a quadrangular prism, and a threaded hole 321 for mounting the proximity switch 22 is formed in the first mounting seat 32 perpendicular to the central axis of the first mounting seat 32; an auxiliary positioning sleeve 31, in which the first mounting seat 32 is slidably arranged; and at least two laser indicators 33, which are arranged on the auxiliary positioning sleeve 31 and respectively located at two ends of the first mounting seat 32, and the light emitted by the two laser indicators 33 is in the same plane as the central axis of the threaded hole 321.

[0029] In the specific installation, first, the first mounting seat 32 is placed in the auxiliary positioning sleeve 31, then the two laser indicators 33 are turned on, and the relative position of the first mounting seat 32 and the zero scale line of the hub 11 is adjusted until the light emitted by the two laser indicators 33 is on the zero scale line of the hub 11, at this time, the light emitted by the two laser indicators 33, the central axis of the threaded hole 321 and the zero scale line of the hub 11 are in the same plane; then the auxiliary positioning sleeve 31 is taken out, and finally the proximity switch 22 is mounted in the first mounting seat 32 through threaded connection.

[0030] It is worth mentioning that the laser pointer 33 is the prior art in the field, and the laser pointer 33 is also called a laser pen, a star pen, etc. The visible laser is designed into a portable and hand-held laser module (diode) processing into a pen-shaped transmitter. The laser pointer 33 can be powered by a button cell.

[0031] Referring to Figure 3 It is worth mentioning that the installation mode of the trigger component 21 can be obtained in the same way by referring to the installation mode of the proximity switch 22.

[0032] By using the utility model, the center axis of the proximity switch 22 can be aligned and installed on the zero scale line of the hub 11, and the center axis of the trigger component 21 can be aligned and installed on the zero scale line of the blade 12. The installation accuracy of the proximity switch 22 and the trigger component 21 can be improved, the detection coverage area of the proximity switch 22 can be effectively ensured, and the zero calibration detection accuracy of the proximity switch 22 on the trigger component 21 can be improved.

[0033] Preferably, the tool further comprises a magnetic component 34 arranged at the end of the first mounting seat 32, which can assist in adsorbing the first mounting seat 32 on the hub 11, and the auxiliary sleeve is taken out during the installation process.

[0034] It is worth mentioning that the magnetic component 34 can be a permanent magnet made of neodymium iron boron.

[0035] The tool further comprises an auxiliary fixing sheet connected to the first mounting seat 32 and the hub 11 by welding. After the auxiliary positioning sleeve 31 is taken out, the first mounting seat 32 is adsorbed on the hub 11 by magnetism, and the first mounting seat 32, the hub 11 and the auxiliary fixing sheet are fixedly connected by welding, so that the positioning and installation of the first mounting seat 32 are completed.

[0036] Those skilled in the art will appreciate that although preferred embodiments of the utility model have been described, once the basic creative concept is known, those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to include the preferred embodiments and all changes and modifications falling within the scope of the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and modifications of the utility model fall within the scope of the utility model claims, the utility model also intends to include these changes and modifications.

Claims

1. A proximity switch based blade zeroing tool, characterized in that, The utility model relates to a wind turbine blade position detection device, including: Trigger component (21) is arranged on the blade (12) and is in the zero scale line of the blade (12) and can rotate with the blade (12) synchronously; Proximity switch (22) is arranged on the wheel hub (11) and is in the zero scale line of the wheel hub (11) and is in one side of the blade (12); Control terminal is electrically connected with the proximity switch (22); Wherein, the trigger component (21) rotates with the blade (12) and can trigger the proximity switch (22) and deliver the electric signal to the control terminal; Power supply is used for providing electric energy; First mounting seat (32) is four prism, and the threaded hole (321) for installing the proximity switch (22) is set up in the first mounting seat (32) and is perpendicular to the central axis of the first mounting seat (32); Auxiliary positioning sleeve (31), the first mounting seat (32) is slidably arranged in the auxiliary positioning sleeve (31); At least two laser indicators (33) are arranged on the auxiliary positioning sleeve (31) and are respectively in both ends of the first mounting seat (32), and the light rays emitted by the two laser indicators (33) are in the same plane with the central axis of the threaded hole (321).

2. The proximity switch based vane zeroing tool of claim 1, wherein, The trigger component (21) is a 0.3cm diameter metal cylinder.

3. The proximity switch based vane zeroing tool of claim 1, wherein, The proximity switch (22) is NPN normally open inductive proximity switch (22).

4. The proximity switch based vane zeroing tool of claim 1, wherein, It further includes an indicating lamp electrically connected with the control terminal.

5. The proximity switch based vane zeroing tool of claim 1, wherein, It further includes: Magnetic component (34) is arranged in the end of the first mounting seat (32).

6. The proximity switch based vane zeroing tool of claim 1, wherein, It further includes: Auxiliary fixing sheet is connected with the first mounting seat (32) and the wheel hub (11) by welding.

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