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Toothed belt detection device and method, pitch device

A detection device, toothed belt technology, applied in the direction of measuring device, transmission parts, belt/chain/gear, etc., can solve the problems of low safety, no detection of toothed belt breakage, etc. Effect

Active Publication Date: 2019-02-15
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a toothed belt detection device and method, and a pitch control device to solve the problem of low safety caused by the absence of equipment for detecting toothed belt fractures in existing wind power generating sets

Method used

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  • Toothed belt detection device and method, pitch device
  • Toothed belt detection device and method, pitch device
  • Toothed belt detection device and method, pitch device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, the toothed belt 90 used in the pitch device of the wind power generating set generally includes a metal wire 91 and rubber wrapped around the metal wire 91 . The function of the metal wire 91 in the toothed belt 90 is to increase the strength of the toothed belt 90, prevent the toothed belt 90 from breaking, and increase the service life of the toothed belt 90.

[0029] In this embodiment, the electrical conductivity of the metal wire 91 is used to detect whether the metal wire 91 is broken. If the metal wire 91 is broken, it means that the toothed belt 90 is at least partially broken and needs to be replaced and repaired, thereby realizing the detection of the toothed belt 90 .

[0030] When detecting the metal wire 91 of the toothed belt 90, each metal wire 91 can be detected separately, or all the metal wires 91 can be connected end to end in turn into a conductor (such as figure 2 shown) for detection.

[0031] Of course, the toothed b...

Embodiment 2

[0063] Such as Figure 4 As shown, in this embodiment, except that the first end of the toothed belt 90 is fixedly provided with the connector 20, and the second end of the toothed belt 90 is connected with the switch 30, the others are the same as the first embodiment, so again No longer.

[0064] In this embodiment, the conductive probes 22 of the connector 20 are connected to the metal wires 91 of the toothed belt 90 in one-to-one correspondence, and are connected to form a node, and the switch 30 is switchable in a one-to-one correspondence with the metal wires 91 connected to control one of all the metal wires 91 to be connected to the power supply detection circuit 10 to realize the separate test of the metal wires 91. It should be noted that the changeover switch 30 here is switchably connected to the metal wire 91, which means that the switch 30 can be connected to one of all the metal wires 91 as required, so as to connect the metal wire 91 to the power supply detect...

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Abstract

The invention provides a tooth-shaped belt detection device and method and a variable pitch device. At least one metal wire is arranged in a tooth-shaped belt. The tooth-shaped belt detection device comprises a power supply detection circuit, wherein the metal wires are connected in the power supply detection circuit and form a detection loop, and the power supply detection circuit supplies power to the metal wires and detects connection and disconnection of the detection loop so as to judge connection and disconnection of the metal wires. By means of the tooth-shaped belt detection device, breakage of the tooth-shaped belt can be found in time, and accidents can be avoided.

Description

technical field [0001] The invention relates to the field of safety detection equipment for wind power generating sets, in particular to a toothed belt detection device and method, and a pitch change device. Background technique [0002] The toothed belt is a transmission belt with a toothed structure on the working surface, which transmits power and motion by the meshing of the teeth and the teeth. The toothed belt is used as the transmission device of the wind turbine pitch system. Compared with the pitch system using gears as the transmission device, the advantages of the pitch system using the toothed belt are stable transmission, low noise, simple maintenance, convenience and cost. lower. However, the load-bearing capacity of the toothed belt is limited, and it is prone to breakage when it is subjected to a large wind load. If the toothed belt breaks, the blade will rotate around the pitch bearing under the action of inertia, causing serious accidents such as blade swe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/00
CPCF16H57/01F16H2057/014F16H2057/018G01N27/00
Inventor 吉银辉聂峰唐新安
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD