Fault diagnosis technology for mechanical tower

A fault diagnosis and mechanical tower technology, applied in the testing of machines/structural components, measuring vibration, measuring devices, etc., can solve the problems of difficult to put forward design requirements and improvement suggestions, no safety detection device, wind turbine operation resonance damage, etc. question

Active Publication Date: 2009-09-30
北京唐智科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even some high-tower equipment with huge influence, such as metallurgical blast furnaces, do not have special safety detection devices
As a result, not only accidents occur from time to time, such as wind turbines being damaged due to operating resonance, and electri...

Method used

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  • Fault diagnosis technology for mechanical tower
  • Fault diagnosis technology for mechanical tower
  • Fault diagnosis technology for mechanical tower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This mechanical tower fault diagnosis technology includes a sensor group 1 and a fault information processor 2. The sensor group 1 includes sensors N1 installed on the upper layer of the tower and sensitive to the overall north-south direction of the tower according to geographical coordinates (south-east-northwest) and the sensor N1 in the east-west direction. The sensor E1 for vibration, and the sensors N2 and E2 for the torsional vibration of the sensitive tower around its symmetry center 0, also include the polar coordinate sensor J for detecting external effects in the Y direction relative to the east-west direction of the tower and taking the east as a reference; fault information processor 2 Contains AD interface circuit 21 and analysis and diagnosis system (software) 22; sensor output acceleration signals N1, N2, E1, E2, and signal J of force direction angle are respectively connected to the input end of AD interface circuit 21 of fault information processor 2 N1...

Embodiment 2

[0088] Embodiment 2 is a tower center trajectory scheme that simplifies the fault information processor 2 or its AD interface circuit 21 and analysis and diagnosis system 22 into an oscilloscope to directly observe the tower amplitude in real time.

[0089] It is characterized in that the fault information processor is partially replaced by an oscilloscope, and the signal e1 or E1 representing the east-west vibration of the tower output by the separation operator 23 is connected to the X axis of the oscilloscope, and the X axis represents the east; the signal output by the separation operator 23 is The signal n1 or N1 vibrating in the north-south direction of the tower is connected to the Y axis of the oscilloscope, and the Y axis represents the north; when the tower vibrates, the oscilloscope draws the motion amplitude or quasi-acceleration trajectory of the tower center in real time. For example, when a certain speed is displayed in time, the dangerous situation of the tower ...

Embodiment 3

[0090] Embodiment 3, a tower fault diagnosis method, when using the fault information processor to collect N1, N2, E1, E2, J, n1, e1, NZ in real time, use the analysis and diagnosis system (software) 22 to not only draw the tower center trajectory in real time as attached Figure 10-1~10-3 ,(in Figure 10-1 It means that n1=1, b1=B, the amplitude is 0.1m, the frequency is the same, and the phase difference is 90 degrees. At this time, the trajectory of the tower center is a circle with a diameter. Figure 10-2 It shows that the amplitude of n1=N, b1=B is 0.1m, the north-south vibration frequency is 3 times of the east-west vibration frequency, and it is excited by the passing of 3 blades. At this time, the trajectory of the tower center is a 0.2m triple twisted line. Figure 10-3 It means that the amplitude of n=N, b1=B is 0.1m, the north-south amplitude frequency is 3 times of the east-west vibration frequency, and the amplitude is 10 times of the east-west vibration after...

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Abstract

The invention relates to fault diagnosis technology for a mechanical tower, which comprises a sensor group comprising a vibration or/and steady-state acceleration detection sensor and a forced direction detection sensor, and a fault information processor for acquiring signals of the sensor group and analyzing and diagnosing the signals of the sensor group. The signals detected by the sensor groupare transmitted to the fault information processor through cables, the hardware of the fault information processor acquires the signals, and then the corresponding software of the fault information processor performs analytical diagnosis and treatment. Because a plurality of groups of acceleration sensors arranged at a specific position for monitoring the dynamic condition of the tower under a running state are adopted, the technology not only can master the vibration displacement born by the tower along the direction of geographical coordinates, but also can effectively monitor various influences brought by torsional vibration caused by environmental factors and change caused by factors such as individual foundation of a tower body and the like. Simultaneously, aiming at the change factors, the fault information processor matched with the acceleration sensors warns in time within a range of ensuring the normal work of the tower. Therefore, the technology provides a technical support for ensuring the using safety of the tower and improving the service life.

Description

technical field [0001] The invention relates to a mechanical tower fault diagnosis technology, which belongs to the category of mechanical fault detection and diagnosis technology, and is mainly used for online detection and diagnosis of mechanical towers and cables with vibration detection and analysis technology, such as electric towers and cables of transmission lines, Failures of relay towers for wireless communications, towers for wind power generation, reaction towers for petrochemical equipment, blast furnaces for metallurgical equipment, and high-rise buildings. technical background: [0002] Tower structures are often used in existing buildings, industries, and power facilities. Most towers do not have fault detection devices, but employ what are believed to be sufficiently conservative design codes to ensure safety. Even some high-tower equipment with huge influence, such as metallurgical blast furnaces, does not have special safety detection devices. As a result...

Claims

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Application Information

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IPC IPC(8): G01M7/02G01H1/00G01H1/10
Inventor 唐德尧
Owner 北京唐智科技发展有限公司
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