Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Global detection system of tank floor based on active and passive acoustic fusion

A storage tank bottom plate, active and passive technology, applied in the direction of measuring devices, processing detection response signals, and using acoustic wave emission technology for material analysis, etc., can solve the problem of incomplete evaluation results, inability to obtain dimensions, and small coverage of acoustic wave attenuation detection, etc. problems, to achieve intuitive and reliable evaluation results, improve detection efficiency, and improve detection coverage

Active Publication Date: 2022-06-28
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the ultrasonic guided wave system in the prior art can only determine the location of the tank bottom defect, and the specific size cannot be obtained yet, and the acoustic emission system can only detect the corrosion activity of the tank bottom. Incomplete evaluation results may occur during online detection
[0007] In addition, because the ultrasonic guided wave technology needs to run the sensor along the edge plate of the tank bottom for a point-by-point detection, the ultrasonic guided wave technology has defects such as low monitoring efficiency and small coverage of sound wave attenuation detection.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Global detection system of tank floor based on active and passive acoustic fusion
  • Global detection system of tank floor based on active and passive acoustic fusion
  • Global detection system of tank floor based on active and passive acoustic fusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] combine figure 1As shown in the figure, the global detection system of the tank floor with active and passive acoustic fusion includes an acoustic wave sensor 1, a collection card 2 and a host computer 3. The acoustic wave sensor 1 in this embodiment 1 has the functions of receiving and transmitting acoustic waves at the same time.

[0057] There are multiple acoustic wave sensors 1, and some of the acoustic wave sensors 1 are evenly arranged on the tank bottom edge plate 9 outside the storage tank 8, such as image 3 and Figure 4 As shown, some of the acoustic wave sensors 1 are also placed in the central area of ​​the inner bottom plate of the storage tank.

[0058] Preferably, the acoustic wave sensor put into the central area of ​​the inner bottom plate of the storage tank adopts an intrinsically safe waterproof type sensor.

[0059] By arranging the above-mentioned acoustic wave sensors on the central area of ​​the tank inner bottom plate and the tank bottom ed...

Embodiment 2

[0091] This embodiment 2 describes an active and passive acoustic fusion storage tank floor global detection system. Except for the following technical features that are different from the above-described embodiment 1, the remaining technical features of the embodiment 2 can be referred to the above-described embodiment 1.

[0092] Since the number of acoustic wave modes increases with the increase of frequency, using multiple narrow-band excitation signals as excitation waves can suppress the multi-mode of the excited waves and reduce the complexity of monitoring. In the second embodiment, the frequency range is 20kHz-500kHz, and the excitation wave in this range is attenuated slowly, and this frequency band can be selected as the frequency range of the active acoustic excitation wave.

Embodiment 3

[0094] This embodiment 3 describes an active and passive acoustic fusion storage tank floor global detection system. Except the following technical features of this embodiment 3 are different from those of the above-mentioned embodiment 1 or 2, the rest of the technical features can be referred to the above-mentioned embodiment 1. or 2.

[0095] The third embodiment also adds a dropping device for dropping the acoustic wave sensor into the central area of ​​the bottom plate inside the storage tank.

[0096] like Figure 5 to Figure 7 As shown, the delivery device includes a central rod 14 , a circular base 15 , a fixed ring 16 and a moving ring 17 .

[0097] The central rod 14 is mounted on the circular base 15 , and the fixed ring 16 and the moving ring 17 are both sleeved on the central rod 14 .

[0098] The fixing ring 16 is fixedly arranged on the central rod 14 .

[0099] The moving ring 17 is located above the fixed ring 16 and can slide up and down along the central ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an active and passive sound fusion integrated detection system for the bottom plate of a storage tank. The bottom plate detection system for a storage tank puts an intrinsically safe waterproof sensor or a sensor array formed by a plurality of intrinsically safe waterproof sensors into the storage tank. The central area of ​​the bottom plate inside monitors the tank together with the acoustic wave sensors evenly arranged on the edge plate of the tank bottom. At the same time, the active acoustic excitation modulation signal and passive acoustic emission signal are collected, which can complete the fusion analysis and processing of frequency domain and time domain information to form a storage tank. The image of the position distribution, size and corrosion activity of tank bottom defects is especially suitable for the detection of large storage tanks. The invention changes the sensor point-by-point detection mode of the traditional ultrasonic guided wave technology, adopts the active acoustic excitation detection method of the acoustic signal excitation mode and the defect modulation signal extraction method, and improves the detection coverage; and integrates the passive acoustic emission detection method to detect the bottom plate of the storage tank. The detection will greatly improve the detection efficiency, and the evaluation results will be more comprehensive, intuitive and reliable.

Description

technical field [0001] The invention belongs to the technical field of storage tank detection, and relates to an active and passive acoustic fusion integrated storage tank bottom plate global detection system. Background technique [0002] Ultrasonic guided waves and acoustic emission are technologies that can realize the online inspection of the tank bottom without opening the tank and without production. in: [0003] Ultrasonic guided wave is an active acoustic technology. The test system shows that the sensor is placed on the polished tank bottom edge plate. Under the control of the guided wave transceiver, the sensor actively sends out a pulse signal to the tank bottom to excite Lamb waves. When a defect is encountered, an echo is formed, and the position of the defect can be calculated more accurately by analyzing the echo signal. In this way, the sensor runs along the edge plate of the tank bottom for one week, performs point-by-point detection, and obtains detection...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/14G01N29/04G01N29/44
CPCG01N29/041G01N29/14G01N29/44G01N2291/2695G01N2291/023
Inventor 邱枫李明骏黄贤滨屈定荣韩磊张艳玲
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com