KR20170085331A - Acoustic intellegence analytical system for an abnomality supervisory of plant and installation - Google Patents

Acoustic intellegence analytical system for an abnomality supervisory of plant and installation Download PDF

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Publication number
KR20170085331A
KR20170085331A KR1020160004822A KR20160004822A KR20170085331A KR 20170085331 A KR20170085331 A KR 20170085331A KR 1020160004822 A KR1020160004822 A KR 1020160004822A KR 20160004822 A KR20160004822 A KR 20160004822A KR 20170085331 A KR20170085331 A KR 20170085331A
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South Korea
Prior art keywords
gas
acoustic information
frequency
frequency spectrum
pump
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KR1020160004822A
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Korean (ko)
Inventor
김성주
김영주
김천태
정민
Original Assignee
대흥산업가스주식회사
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Priority to KR1020160004822A priority Critical patent/KR20170085331A/en
Publication of KR20170085331A publication Critical patent/KR20170085331A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/666—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters by detecting noise and sounds generated by the flowing fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/7082—Measuring the time taken to traverse a fixed distance using acoustic detecting arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/14—Testing gas-turbine engines or jet-propulsion engines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/02—Analysing fluids
    • G01N29/036—Analysing fluids by measuring frequency or resonance of acoustic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

According to the present invention, there are provided a liquefied gas storage tank 11 in which cryogenic liquefied gas is stored, a first pump 12 for transferring the liquefied gas, a heat exchanger 12 for vaporizing the liquefied gas transferred by the first pump 12, A second pump 15 for transferring the gas vaporized by the heat exchanger 13 to the filler 14 filling the individual container, a valve 16 for controlling the opening and closing of the vaporized gas, (13), a second pump (15), a valve (16), and a pressure regulator (17) for regulating the pressure of the gasified gas, wherein the first pump (12), the heat exchanger And the pressure regulator 17 to filter the frequency band necessary for the operation of the gas filling device and then analyze the frequency spectrum and compare the frequency spectrum with the frequency spectrum of the gas leak Acoustic information for presence detection There is provided an acoustic information analysis system for detecting an abnormality of a plant facility comprising an analysis system (20).

Description

[0001] The present invention relates to an acoustic information analyzing system for detecting an abnormality of a plant facility,

The present invention relates to an acoustic information analyzing system for detecting an abnormality in a plant facility, and more particularly, to an acoustic information analyzing system for analyzing the leakage and the leakage of a gas through analysis of frequency and amplitude of a sound wave generated in the process of charging and using high- Lt; / RTI >

Industrial or domestic gas is primarily stored in a large capacity storage tank in a liquid state. And then transports the liquefied gas from the storage tank, which is stored in the liquefied state, when the demand is thereafter by the transfer pump. The liquefied gas thus transferred is compressed and stored in a container by a pump through vaporization. The compressed gas stored in the container is used through a decompression device.

Since these gases are transported and stored at a pressure of, for example, 120 bar in a vaporized state, gas leakage frequently occurs in piping equipment, compression transfer devices, gauges and valves. Although the gas leakage is detected by detecting the gas leaks by providing a sensor that reacts with the gas at a certain place, there is a limit to the type of the gas reaction detector due to the limitation of the type of the gas reaction.

On the other hand, a method of detecting gas leakage through optical analysis for detecting such gas leakage is disclosed in Patent Publication No. 10-2008-0093189.

According to this method, as shown in Fig. 1, there are provided a gas line for providing a gas supply, a gas line having a part of a transparent tube, a light emitter for irradiating light in a transparent section of the gas line, And a comparator that compares the refraction angle detected by the refraction sensor with a reference refraction angle to determine whether the gas leakage occurs and generates an interlock signal when the gas leakage in the gas line is determined, .

However, according to this technique, not only the area where light can be illuminated is limited, but also there is a problem that it is difficult to use in a space with many obstacles.

Therefore, development of a technique capable of solving such a problem is required.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an acoustic information analysis system for detecting the presence or absence of an abnormality in a plant facility capable of detecting gas leakage without being limited by a space.

According to the present invention, there are provided a liquefied gas storage tank 11 in which cryogenic liquefied gas is stored, a first pump 12 for transferring the liquefied gas, a heat exchanger 12 for vaporizing the liquefied gas transferred by the first pump 12, A second pump 15 for transferring the gas vaporized by the heat exchanger 13 to the filler 14 filling the individual container, a valve 16 for controlling the opening and closing of the vaporized gas, (13), a second pump (15), a valve (16), and a pressure regulator (17) for regulating the pressure of the gasified gas, wherein the first pump (12), the heat exchanger And the pressure regulator 17 to filter the frequency band necessary for the operation of the gas filling device and then analyze the frequency spectrum and compare the frequency spectrum with the frequency spectrum of the gas leak Acoustic information for presence detection There is provided an acoustic information analysis system for detecting an abnormality of a plant facility comprising an analysis system (20).

Here, the acoustic information analyzing system 20 for detecting the presence or absence of an abnormality in the plant facility includes a signal input device 22 for receiving a voice signal in a space provided with the gas filling device, a voice input A band filter 24 for filtering the frequency band necessary for the operation of the gas filling device with respect to the signal, a frequency generating circuit 24 for generating a frequency generated at the time of charging in each module constituting the charging device with respect to the frequency of the voice signal filtered by the band filter 24, To analyze the presence or absence of gas leakage by comparing the frequency spectrum of the gas leak to the module of each gas filling device with respect to the frequency of the voice signal analyzed by the spectrum analyzer 26 and the spectrum analyzer 26 for analyzing the spectrum And a comparator 28 as shown in FIG.

The bandpass filter 24 filters the frequency band required for gas transportation, filling, valve control, filling control, and the like related to the frequency band required for the operation of the gas filling device, with respect to the voice signal input by the signal input device 22 desirable.

The spectrum analyzer 26 analyzes the natural frequency spectrum generated at the time of normal or abnormal charging in each module constituting the charging device with respect to the frequency of the voice signal filtered by the band filter 24.

The spectrum analyzer 26 preferably analyzes the natural frequency spectrum generated at the time of charging in each module according to the type, pressure, and flow rate of gas to be transferred or filled.

The spectrum analyzer 26 analyzes a natural frequency spectrum generated during charging in each module according to the type, pressure, and flow rate of gas to be transferred or filled, and stores the sample data of the natural frequency spectrum ).

In addition, the memory (not shown) may be stored as sample data on the natural frequency spectrum subdivided by natural frequency spectrum regions that may be generated in gas filling in each module.

It is also preferred that the comparator 28 analyzes the gas leakage by comparing the frequency of the voice signal analyzed by the spectrum analyzer 26 with the frequency spectrum of the gas leak for each module of each gas filling device.

In addition, it is preferable that the sample data consist of data integrated according to a condition of at least one of the pressure of the gas to be transferred at the time of filling, the conveying speed, and the diameter of the pipe.

Therefore, according to the present invention, it is possible to quickly and accurately determine whether or not the gas is leaked by comparing and detecting a normal gas charge and a variation in frequency of a different frequency, for example, a change in spectrum of a natural frequency, Furthermore, by comparing and analyzing frequency spectrums having different natural frequencies at the time of gas charging for each module, it is possible to detect a module in which leakage occurs more precisely.

1 is a schematic block diagram of a conventional gas leak detection system.
2 is a schematic block diagram of an acoustic information analysis system for detecting an abnormality of a plant facility according to a preferred embodiment of the present invention.
3 is a flowchart of an acoustic information analysis system for detecting an abnormality of a plant facility according to a preferred embodiment of the present invention.

Hereinafter, an acoustic information analyzing system for detecting an abnormality of a plant facility according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a schematic block diagram of an acoustic information analyzing system for detecting abnormality of a plant facility according to a preferred embodiment of the present invention. FIG. 3 is a block diagram of an acoustic information analyzing system for detecting abnormality of a plant facility according to a preferred embodiment of the present invention. FIG. 2 is a flowchart according to an information analysis system. FIG.

2 and 3, the acoustic information analyzing system for detecting abnormality of the plant facility according to the preferred embodiment of the present invention includes a liquefied gas storage tank 11 for storing cryogenic liquefied gas, A heat exchanger 13 for vaporizing the liquefied gas transferred by the first pump 12 and a filler 14 for filling the individual containers are connected to the heat exchanger 13 , A gas pump (15), a valve (16) for controlling the opening and closing of the vaporized gas, and a pressure regulator (17) for regulating the pressure of the vaporized gas, The detection system receives a voice signal for the first pump (12), the heat exchanger (13), the second pump (15), the valve (16) and the pressure regulator (17) After analyzing the frequency spectrum of the band, And an acoustic information analyzing system 20 for detecting an abnormality of a plant facility for analyzing the gas leakage by comparing it with the frequency spectrum of the emission.

The liquefied gas storage tank 11 is composed of a storage tank in which cryogenic liquefied gas such as nitrogen, argon or carbon dioxide is stored. The first pump 12 is composed of a low-temperature pump for transferring the liquefied gas stored in the liquefied gas storage tank 11 to the heat exchanger 13. The heat exchanger 13 comprises a vaporizer for vaporizing the liquefied gas. The filling machine 14 is composed of a device for filling the individual containers and the second pump 15 is composed of a pump for compressing and transferring the vaporized gas at room temperature to the filling machine 14. The gas filling device may be selectively added with the above configuration.

According to the acoustic information analyzing system 20 for detecting the presence or absence of an abnormality in the plant facility according to the preferred embodiment of the present invention, the signal input device 22 for receiving a voice signal in a space provided with the gas filling device, A band filter 24 for filtering a frequency band necessary for the operation of the gas filling device to the voice signal inputted by the band filter 24, By comparing the frequency spectrum of the gas leak to the module of each gas filling device with respect to the frequency of the voice signal analyzed by the spectrum analyzer 26 and the spectrum analyzer 26 for analyzing the frequency spectrum generated at the time of charging And a comparator 28 for analyzing the gas leakage.

The signal input device 22 is a voice input device for receiving a voice signal in a space provided with the gas filling device. The voice input device 22 preferably includes a device for converting voice into an analog signal. .

The band filter 24 filters the frequency band required for the operation of the gas filling device with respect to the voice signal input by the signal input device 22, thereby obtaining a frequency band generated by the work in the filling work station, for example, Frequency band and high-frequency band are filtered to filter frequency bands necessary for gas filling operation, such as gas transfer, filling, valve control and filling control.

The spectrum analyzer 26 is a module that consists of a module consisting of a pipe, gauge or valves between each module, for example a pump and a heat exchanger, for the frequency of the voice signal filtered by the band filter 24, Analyze the natural frequency spectrum that is generated. At this time, the spectrum analyzer 26 analyzes the intrinsic frequency spectrum generated at the time of charging in each module according to the type, pressure, and flow rate of gas to be transferred or filled. Meanwhile, the spectrum analyzer 26 analyzes a natural frequency spectrum generated when each module is charged according to the kind, pressure, and flow rate of the gas to be transferred or filled, and stores the sample data of the natural frequency spectrum ).

The spectrum analyzer 26 analyzes the frequency band necessary for the malfunction of the gas filling of each module based on the band of the natural frequency spectrum generated in each module necessary for gas filling. Therefore, by analyzing the frequency spectrum for each eigenfrequency spectrum band which is generated differently in different modules generated by the spectrum analyzer 26 during the gas charging, the comparison analysis of the gas filling malfunction by the comparator 28 can be made more accurate have.

The memory (not shown) provided in the spectrum analyzer 26 stores sample data of natural frequency spectra of the modules required for gas charging. At this time, the memory Is preferably stored. In this manner, the memory is stored as sample data on the natural frequency spectrum segmented by natural frequency spectral regions that may be generated when gas filling is performed in each module, so that the normal operation of the gas filling by the comparator 28 can be more accurately analyzed .

The comparator 28 analyzes the gas leakage by comparing the frequency of the voice signal analyzed by the spectrum analyzer 26 with the frequency spectrum of the gas leak for each module of each gas filling device.

At this time, it is preferable that the frequency spectrum of gas leakage to each module to be compared by the comparator 28 is made up of sample data previously input to a memory (not shown) provided in the spectrum analyzer 26.

As described above, the memory (not shown) included in the spectrum analyzer 26 stores sample data for each natural frequency spectrum band at the time of gas filling, which may be generated for each module. At this time, It is preferable that sample data consisting of individual sample data is stored for each natural frequency spectrum band at the time of gas filling at the time of operation. However, within the spirit of the present invention, the sample data is stored in each module It may be made of data on a malfunction, for example, a change in the natural frequency spectrum having a change in phase or frequency caused by leakage, instead of the natural frequency spectrum to be generated.

The sample data is composed of data integrated according to the conditions including the pressure of the gas transferred at the time of filling, the feed rate, the diameter of the pipe, and the like.

Therefore, according to the present invention, the comparison of the normal gas charge and the variation of the other frequency, for example, the change of the spectrum of the natural frequency, with respect to the frequency of the voice signal to be compared and analyzed by the comparator 28, And can accurately determine.

In addition, according to the present invention, when a gas is charged for each module, a frequency spectrum having different natural frequencies is compared and analyzed, thereby detecting modules that leak more quickly and accurately.

11: Liquefied gas storage tank
12: first pump
13: Heat exchanger
14: Filling machine
15: Second pump
20: Acoustic information analysis system for detecting abnormalities of plant facilities
22: signal input device
24: Bandpass filter
26: Spectrum analyzer
28: comparator

Claims (9)

A liquefied gas storage tank 11 for storing cryogenic liquefied gas, a first pump 12 for transferring the liquefied gas, a heat exchanger 13 for vaporizing the liquefied gas transferred by the first pump 12, A second pump 15 for transferring the gas vaporized by the heat exchanger 13 to the filler 14 filling the vessel, a valve 16 for interrupting the opening and closing of the vaporized gas, And a pressure regulator (17) for the gas leakage detection system,
A frequency band necessary for the operation of the gas filling apparatus is filtered by receiving a voice signal for the first pump 12, the heat exchanger 13, the second pump 15, the valve 16 and the pressure regulator 17 And an acoustic information analyzing system (20) for detecting an abnormality of a plant facility for analyzing the gas leakage by comparing the frequency spectrum with the frequency spectrum of the gas leakage by analyzing the frequency spectrum. Information analysis system. The acoustic information analyzing system (20) according to claim 1, wherein the acoustic information analyzing system (20) for detecting abnormality of the plant facility comprises a signal input device (22) for receiving a voice signal in a space provided with the gas filling device,
A band filter 24 for filtering the frequency band required for the operation of the gas filling device with respect to the voice signal inputted by the signal input device 22,
A spectrum analyzer 26 for analyzing the frequency spectrum generated at the time of charging in each module constituting a filling device with respect to the frequency of the voice signal filtered by the band filter 24,
And a comparator (28) for analyzing the gas leakage by comparing the frequency of the voice signal analyzed by the spectrum analyzer (26) with the frequency spectrum of the gas leak to the module of each gas filling device An Acoustic Information Analysis System for Detecting Abnormalities of. The band pass filter according to claim 2, wherein the band pass filter (24) comprises a band pass filter (24) for filtering the voice signal input by the signal input device (22) to a frequency band necessary for gas transportation, filling, valve control, Wherein the acoustic information analyzing system comprises: 4. The method according to claim 2 or 3, wherein the spectrum analyzer (26) measures the frequency of the voice signal filtered by the band-pass filter (24) Analyzing the acoustic information of the plant equipment. The system according to claim 4, wherein the spectrum analyzer (26) analyzes the natural frequency spectrum generated at the time of charging in each module according to the type, pressure and flow rate of gas to be transferred or filled. Acoustic information analysis system. The spectrum analyzer according to claim 5, wherein the spectral analyzer (26) is configured to analyze the eigenfrequency spectrum generated upon charging in each module according to the type, pressure, and flow rate of the gas to be transferred or filled, Further comprising a memory (not shown) for detecting an abnormality of the plant facility. 7. The method according to claim 6, wherein the memory (not shown) is stored as sample data related to a natural frequency spectrum subdivided by natural frequency spectrum regions that can be generated in gas filling in each module Acoustic information analysis system. 8. The method of claim 7, wherein the comparator (28) analyzes gas leakage by comparing the frequency of the voice signal analyzed by the spectrum analyzer (26) with the frequency spectrum of the gas leak for each module of each gas filling device An acoustic information analysis system for detecting abnormalities in plant facilities. The method according to claim 7, wherein the sample data comprises data integrated in accordance with a condition of at least one of a gas pressure, a feed rate, and a diameter of a pipe to be transferred at the time of filling. Acoustic information analysis system.
KR1020160004822A 2016-01-14 2016-01-14 Acoustic intellegence analytical system for an abnomality supervisory of plant and installation KR20170085331A (en)

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KR1020160004822A KR20170085331A (en) 2016-01-14 2016-01-14 Acoustic intellegence analytical system for an abnomality supervisory of plant and installation

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