An optical fiber sensing system for reciprocating compressors and its multi-parameter monitoring method
An optical fiber sensing system and compressor technology, applied in liquid variable capacity machinery, pump testing, mechanical equipment, etc., can solve problems such as poor temperature stability, inability to transmit signals over long distances, and achieve high precision and anti-electromagnetic interference. Capable, Intrinsically Safe Effects
Active Publication Date: 2019-03-08
WUHAN UNIV OF TECH
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Problems solved by technology
At present, electrical sensors are mostly used for online monitoring of reciprocating compressors, such as piezoelectric sensors, eddy current sensors, thermal resistance or thermocouple sensors, and the chemical industry has strict requirements for the use of on-site electricity, and such sensors The sensor has many problems such as poor temperature stability and the inability to transmit signals over long distances
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[0020] The technical solutions of the present invention will be described below in conjunction with the accompanying drawings and embodiments.
[0021] Such as figure 1 As shown, an optical fiber sensing system for a reciprocating compressor according to the present invention includes a computer 1, a light source module 2, an optical ring device 3, a signal demodulation unit 4, a splitter 5 and a sensing module, The splitter 5 is respectively connected with the light source module 2, the sensing module and the signal demodulation unit 4 through an optical fiber, and the signal demodulation unit 4 is connected with the computer 1 through a data line; the sensing module includes an optical fiber F-P acceleration sensor 6, FBG displacement sensor 7, optical bond phase sensor 8 and FBG temperature sensor 9.
[0022] Described optical fiber F-P acceleration sensor 6 is installed on the crankcase 10 of compressor, is used for detecting the vibration of reciprocating compressor cran...
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The invention relates to the technical field of optical fiber sensing monitoring and diagnosis application, in particular to an optical fiber sensing system and multi-parameter monitoring method for a reciprocating compressor. The optical fiber sensing system comprises a computer, an optical source module, an optical ring device, a signal demodulation unit, a branching unit and a sensing module. The branching unit is connected with the optical source module, the sensing module and the signal demodulation unit through optical fibers. The signal demodulation unit is connected with the computer through a data line. The sensing module comprises an optical fiber F-P acceleration sensor, FBG displacement sensors, an optical key phase sensor and an FBG temperature sensor. The optical fiber sensing system is reasonable in structure, and an optical fiber sensor has the beneficial effects of being small in size, high in anti-electromagnetic interference capacity, wide in frequency response range, high in precision and the like; and a multipoint distributed multi-parameter measuring manner is adopted in a monitoring system, the real-time change quantity of phase change parameters on key positions is acquired, a failure expert diagnosis and alarm system analyzes and diagnoses a failure source and a failure type, and effective failure type information early warning reminding is carried out.
Description
technical field [0001] The invention relates to the technical field of optical fiber sensing monitoring and diagnosis application, in particular to an optical fiber sensing system for a reciprocating compressor, and discloses a multi-parameter monitoring method for a reciprocating compressor. Background technique [0002] The reciprocating compressor is a kind of booster equipment widely used in the modern petrochemical industry. Due to its complex structure and many excitation sources during operation, there are many types of failures in the production process, and the frequency of failures is relatively high. Therefore, it is necessary to carry out real-time multi-parameter monitoring of the operating status of the reciprocating compressor, and analyze and diagnose the common fault types of the reciprocating compressor. At present, electrical sensors are mostly used for online monitoring of reciprocating compressors, such as piezoelectric sensors, eddy current sensors, the...
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IPC IPC(8): F04B51/00
CPCF04B51/00
Inventor 童杏林刘访邓承伟张翠郭倩丁磊
Owner WUHAN UNIV OF TECH