On-line state monitoring system and method for diaphragm of diaphragm filter board

A state monitoring system and diaphragm filter plate technology, applied in measuring devices, instruments, calculations, etc., can solve problems such as monitoring and the service state of the filter plate of the filter press, so as to ensure benefits, meet health monitoring needs, and avoid safety issues. Effects of accidents and lost production

Active Publication Date: 2016-03-09
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, due to the constraints of various technologies and sensor conditions, there is no te

Method used

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  • On-line state monitoring system and method for diaphragm of diaphragm filter board
  • On-line state monitoring system and method for diaphragm of diaphragm filter board
  • On-line state monitoring system and method for diaphragm of diaphragm filter board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Embodiment 1: An on-line health monitoring device and method for an upper-feed chamber diaphragm filter plate diaphragm.

[0079] Such as image 3 As shown, the system includes: a string bidirectional lead fiber Bragg grating sensor insert 8, a fiber coupler, a fiber grating digital demodulator, a computer system, and the like.

[0080] The structure of string bidirectional lead fiber Bragg grating sensor insert 8 is as follows figure 1 As shown, there are leads at both ends of each fiber grating, forming two signal channels. After being broken by external force, one double-lead grating sensor can become two single-lead grating sensors, and the grating can work normally, ensuring online monitoring process monitoring stability.

[0081] (1) According to the size of the upper feeding diaphragm, 13 fiber gratings with a cladding diameter of 40 μm were engraved. Each optical fiber is engraved with 10 grating units with different central wavelengths, numbered 1-10.

[00...

Embodiment 2

[0088] Embodiment 2 An online health monitoring device and method for a middle-feed compartment diaphragm filter plate diaphragm

[0089] Such as Figure 4 As shown, the system includes: a string unidirectional lead fiber Bragg grating sensor insert 10, a string bidirectional lead fiber Bragg grating sensor insert 8, a fiber coupler, a fiber grating digital demodulator, a computer system, and the like.

[0090] String unidirectional lead fiber Bragg grating sensor insert 10 structure as follows figure 2 As shown, each fiber grating has only one lead wire, and the fiber grating with one-way lead wire is convenient for arrangement around the feeding hole 7 at the center of the diaphragm of the diaphragm filter plate.

[0091] (1) According to the shape, structure, characteristics and size of the middle feed diaphragm, 11 optical fiber engraved gratings numbered 1-11 with a bidirectional lead cladding diameter of 40 μm were engraved. Each optical fiber is engraved with 10 grat...

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PUM

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Abstract

The invention discloses an on-line state monitoring system and method for a diaphragm of a diaphragm filter board. The system comprises a fiber grating demodulator, an optical fiber coupler, a processor and a fiber grating sensor assembly. A light source sends a light signal; the light signal is transmitted to the fiber grating sensor assembly through the optical fiber coupler; after interaction of the light signal and a fiber grating, the reflected light enters the fiber grating demodulator through the optical fiber coupler; the fiber grating demodulator is connected with the processor; and the processor calls a diaphragm damage database, analyzes damage degree, establishes a three-dimensional model, outputs damage distribution of the diaphragm, evaluates the health condition of the diaphragm and gives an early warning in time, thereby helping to eliminate diaphragm faults quickly, preventing safety accident and production loss and ensuring benefit of both equipment manufacturers and users.

Description

technical field [0001] The invention relates to a diaphragm online state monitoring system and method of a diaphragm filter plate. Background technique [0002] Chamber diaphragm filter press has the advantages of high pressing pressure, good corrosion resistance, convenient maintenance, safety and reliability, etc. It is the first choice for industries such as metallurgy, papermaking, pharmaceuticals, food, brewing, and sludge. [0003] Chamber filter press is a pressurized filtration equipment that operates intermittently and requires constant loading and unloading. And in the actual working environment, the pressure on both sides of the filter plate may be severely unbalanced under special conditions such as pipeline blockage, or the filter plate is directly impacted by the slurry due to damage to the filter cloth. In this way, the filter plate is in a state of periodically and frequently subjected to uneven out-of-plane dynamic loads, which further deteriorates its bear...

Claims

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Application Information

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IPC IPC(8): G01D21/02G06F17/50
CPCG01D21/02G06F30/00
Inventor 贾玉玺董琪万国顺郭云力
Owner SHANDONG UNIV
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