Turbine status data acquisition device based on personal computer 104 (PC104) bus

A PC104, state data technology, applied in measurement devices, safety devices, electrical devices, etc., can solve the problems of large size, low reliability, complex circuits, etc., to improve integration, wide application range, and reduce power consumption. Effect

Active Publication Date: 2013-08-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many devices for steam turbine state data acquisition, but most of the data acquisition devices are realized by discrete digital electronic components, which have the disadvantages of large volume, complex circuit, and low reliability.

Method used

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  • Turbine status data acquisition device based on personal computer 104 (PC104) bus
  • Turbine status data acquisition device based on personal computer 104 (PC104) bus
  • Turbine status data acquisition device based on personal computer 104 (PC104) bus

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Embodiment Construction

[0026] refer to Figure 1-5 : A steam turbine state data acquisition device based on the PC104 bus 10, including a controller 4, an A / D conversion module 3, a power module providing a stabilized power supply to the controller 4 and the A / D conversion module 3, and a key phase signal input terminal 1 , the analog signal input terminal 2, the controller 4 is connected with the industrial control host 11 through the PC104 bus 10, the controller 4 is internally provided with a key phase that converts the key phase signal collected from the steam turbine rotor into a frequency multiplier signal of N times frequency Frequency multiplication module 6 (N is the positive integer power of 2), A / D conversion control module 12, FIFO memory 14, FIFO memory 14 are carried out reading and writing control to described A / D conversion module 3 FIFO read-write control module 13, and the PC104 communication module that is connected with PC104 bus 10 communication, the input end of described A / D c...

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Abstract

The invention relates to a turbine status data acquisition device based on a personal computer 104 (PC104) bus, comprising a controller, an A / D (Analogue / Digital) conversion module and a power module, wherein the controller is connected with an industrial control host through the PC104 bus; a key phase frequency doubling module for converting a key phase signal acquired from a turbine rotor into a frequency doubling signal with N-time frequency, an A / D conversion control module, an FIFO (First In First Out) storage and a PC104 communication module are arranged in the controller; the input end of the A / D conversion module is connected with a multipath vibration signal acquired from the turbine rotor; the output end of the key phase frequency doubling module is connected with the A / D conversion control module; the A / D conversion control module is used for carrying out full period equiphase sampling on the multipath vibration signal under the triggering of the frequency doubling signal and controlling the A / D conversion module to carry out A / D conversion on a sampled signal; the output end of the A / D conversion control module is connected with the FIFO storage; and the FIFO storage is connected with the PC104 communication module through an FIFO read write control module. The invention has the advantages of small volume, simplified circuit, high integrated level and high reliability.

Description

technical field [0001] The invention relates to a data acquisition device for sampling the vibration signal of a steam turbine rotor so as to obtain the running state of the steam turbine. Background technique [0002] Steam turbine is the core equipment in the electric power industry. Its operating status affects industrial production and people's daily life. Once a failure occurs, it may cause a chain reaction, resulting in people's normal work and life being unable to proceed, resulting in huge economic losses, and even It can also cause serious and catastrophic casualties. In order to improve the stability, reliability, safety, service efficiency and lifespan of steam turbines, avoid major accidents and affect social production, it is necessary to monitor and diagnose the operating status of steam turbines in real time. The first problem to be solved here is how to obtain the operating status data of the steam turbine. At present, there are many devices used for steam ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D21/00G01H11/06
Inventor 梁文军于保华杨世锡
Owner ZHEJIANG UNIV
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