An online damage detection device for a filter plate of a filter press and its implementation method

Abstract

The invention discloses an online damage detection device for a filter plate of a filter press and an implementation method thereof, comprising a plurality of fiber grating sensor inserts embedded in the filter plate of a filter press, and the fiber grating sensor inserts are connected to a fiber coupler of the filter plate , the filter plate fiber coupler is sequentially connected to the fiber grating demodulator through the filter press fiber coupler and the fiber hub, and the detection light signal generated by the light source enters the fiber grating sensor insert in the filter plate, and is interfered and reflected by the grating area Returning to the fiber grating demodulator, the fiber grating demodulator analyzes the change of the central wavelength of the optical signal, and transmits the demodulated signal to the processor, and the processor establishes a filter plate according to the temperature and strain collected by the fiber grating sensor insert The three-dimensional geometric model of the filter plate is used to calculate the damage degree and remaining strength of the filter plate. The invention can realize the online damage detection of the filter plate of the filter press, and the detection device has the advantages of easy operation, one-time installation and long-term use.

Description

technical field [0001] The invention relates to an online damage detection device for a filter plate of a filter press and an implementation method thereof. Background technique [0002] The filter press is a general mechanical equipment used for solid-liquid separation. The filter press is composed of five parts: frame, filter plate, filter cloth, control system and hydraulic system. The plate forms a closed filter chamber, and the material slurry is pressed into the filter chamber. Under the pressure of the filter plate, the liquid in the filter chamber passes through the filter cloth adjacent to the filter plate and is discharged out of the filter press, thereby realizing solid-liquid separation. The filter plate is the core component for solid-liquid separation on the filter press, and plays a key role in the work of the filter press. When the filter plate of the filter press is working, it must bear huge extrusion force, scouring force and corrosion of the liquid envir...

AI Technical Summary

Problems solved by technology

[0004] The filter plate of the filter press is mostly made of polypropylene resin or polypropylene and glass fiber composite material through molding or injection molding process. However, there are not many types of sensors suitable for temperature and strain detection inside the filter plate. The main reason is that the sensor is planted It is difficult to enter the inside of the filter plate

If the sensor is implanted before the liquid forming of the filter plate, the high temperature and high pressure environment during the liquid forming of the filter plate and the liquid-solid transformation process will easily lead to the failure of the implanted sensor; if the sensor is implanted after the filter plate is formed, additional drilling is required, which is easy Damage the filter plate and cause large measurement errors

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