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Main-shaft built-in-type wind generating set gear box axial displacement monitoring device and method

A wind turbine, axial displacement technology, applied in measurement devices, optical devices, surveying and navigation, etc., can solve the problems of accelerated spindle breakage, long time, and large loss of power generation, achieving no contact wear and simple structure. , high precision effect

Pending Publication Date: 2018-04-27
大连大重风电技术服务有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main shaft dismantling inspection needs to dismantle the hub and blades of the wind turbine, transport the gearbox from the nacelle to the ground factory for disassembly, and then conduct inspections. Flaw detection needs to be carried out inside the hub. If the main shaft of the wind turbine under inspection has cracks, the inspectors will not know it before the inspection. In this case, the inspectors will carry inspection equipment into the hub, which will increase the load on the main shaft and accelerate the risk of main shaft fracture.

Method used

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  • Main-shaft built-in-type wind generating set gear box axial displacement monitoring device and method
  • Main-shaft built-in-type wind generating set gear box axial displacement monitoring device and method
  • Main-shaft built-in-type wind generating set gear box axial displacement monitoring device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 1 to Figure 5 As shown in the figure, an axial displacement monitoring device for a wind turbine gearbox with a built-in main shaft includes a laser ranging sensor 1, a sensor cable 2, a microcontroller 3, an Ethernet network 4, and a computer 5 that are electrically connected in sequence;

[0043] The laser distance measuring sensor 1 is installed on the gear box housing 7, the disc-shaped main shaft end 12 is arranged on one end of the main shaft 11, the main shaft 11 is embedded in the gear box housing 7, and the main shaft end 12 is close to the main shaft side The surface is the main shaft end face 6, and the main shaft end face 6 is a smooth surface perpendicular to the main shaft;

[0044] It also includes a laser source 8, a reflective detection port 9 and a sensor cable interface 10. The outermost end of the spindle end face 6 is located outside the laser source 8 and the reflective detection port 9. The laser source 8 emits laser light to illum...

Embodiment 2

[0050] Such as Figure 1 to Figure 5 As shown, a method for monitoring the axial displacement of a wind turbine gearbox with a built-in main shaft, including the axial displacement monitoring device for a gearbox with a built-in main shaft, also includes the following steps:

[0051] S1: The laser ranging sensor 1 emits laser light through the laser source 8, and detects the laser reflected by the spindle end face 6 through the reflective detection port 9, and the distance L between the laser ranging sensor 1 and the spindle end face 6 satisfies the following formula :

[0052] L=ct / 2 formula (1)

[0053] t is the time difference from emitting the laser to detecting the reflected laser, and c is the propagation speed of light in the air;

[0054] S2: The laser ranging sensor 1 is connected to the sensor cable through the sensor cable interface 10, and transmits the measured data signal to the microcontroller 3 through the sensor cable;

[0055] S3: Four laser distance measu...

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Abstract

The invention discloses a main-shaft built-in-type wind generating set gear box axial displacement monitoring device. The device comprises a laser range finding sensor, a sensor cable, a microcontroller, an Ethernet network and a computer which are successively and electrically connected. The laser range finding sensor is installed on a gear box shell. A disc-shaped main shaft end head is arrangedon one end of a main shaft. The main shaft is embedded in the gear box shell. One side surface of the main shaft end head, which is close to the main shaft, is a main shaft end surface. The main shaft end surface is a smooth surface vertical to the main shaft. A laser source, a light reflection detection port and a sensor cable interface are included. By using the main-shaft built-in-type wind generating set gear box axial displacement monitoring device and the method, an axial displacement is detected in real time and historical data is inquired; precision is high, there is no contact abrasion, during measurement of the axial displacement, a shutdown state is not needed, and generated energy is not lost; and the axial displacement and a main shaft end surface inclination degree can be simultaneously monitored.

Description

technical field [0001] The invention belongs to the technical field of axial displacement monitoring, and in particular relates to an axial displacement monitoring device and method for a gearbox of a wind power generating set with a built-in main shaft. Background technique [0002] As the operation time of wind turbines increases, the main shaft will suffer from fatigue damage and even cracks. If the cracks are allowed to develop, the main shaft will break, and the hub and blades will fall, resulting in huge losses. For the gearbox with built-in spindle, since the spindle is covered by the gearbox box, crack inspection cannot be carried out in an intuitive way. The existing inspection methods are spindle removal inspection and ultrasonic flaw detection inspection. The main shaft dismantling inspection needs to remove the hub and blades of the wind turbine, transport the gearbox from the nacelle to the ground factory for disassembly, and then conduct inspection. This inspec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02G01C9/00
CPCG01B11/026G01C9/00Y02E10/72
Inventor 张文朝卜忠林王立立荆海滨陈亮吴金波于钟丹
Owner 大连大重风电技术服务有限公司