CN109696282A - Deep water process facility acoustic emission detection system - Google Patents
Deep water process facility acoustic emission detection system Download PDFInfo
- Publication number
- CN109696282A CN109696282A CN201910059740.5A CN201910059740A CN109696282A CN 109696282 A CN109696282 A CN 109696282A CN 201910059740 A CN201910059740 A CN 201910059740A CN 109696282 A CN109696282 A CN 109696282A
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- Prior art keywords
- acoustic emission
- detection system
- process facility
- deep water
- signal
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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
- 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
- G01M3/243—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 for pipes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to deep water leak detection fields, and in particular to a kind of deep water process facility acoustic emission detection system, the device include external anti pressure devices and internal acoustic emission detection system.The anti pressure devices include: cylinder, spherical seal head, flat head and fixed device, and the cylinder is streamlined cylindrical pressure casing；The spherical seal head design has watertight plug connector to realize power supply and signal transmission, and welding hanging ring facilitates fixed and carries；The flat head realizes resistance to compression and signal good transmission；End socket and barrel designs O-ring seal, which are realized, to be sealed；It designs adjustable yoke configurations realization and the process facility of different shape size is fixed；The acoustic emission detection system includes: acoustic emission sensor, and signal-transmitting cable, signal processor, the acoustic emission sensor progress signal acquisition and amplification, the signal processor are realized that data are shown, handled and analysis.The present invention has resistance to compression waterproof and good signal transfer functions, and rationally, strong applicability can be realized deep water process facility leak detection for design.
Description
Technical field
The invention belongs to setting for deep water leak detecting device more particularly to a kind of deep water process facility acoustic emission detection system
Meter.
Background technique
In recent years, by the driving of energy needs, oil-gas mining is gradually transferred to ocean by land, the yield of marine oil and gas by
It is cumulative big.Deep water hydrocarbon production practice facility is the chief component of offshore oil and gas field development and production system.Guarantee deep water work
The normal operation of skill facility is the key that guarantee marine oil and gas exploitation.
However, the environment in seabed is more complicated than the environment on land, results in deep water process facility and be chronically at dynamic change
In Geological Environment Engineering, outside is more easier destruction and interference by various factors.Such as bear wave, tide, stream, ice, tsunami, corruption
The effect of the complicated ocean dynamical environment such as erosion, the danger such as external force damage caused by surrounding offshore activities, the peace of deep water process facility
Full operation condition has height change in time and space and Unpredictability, under the influence of the factors such as physics, chemistry, machinery, it will hair
The defects of raw different degrees of burn into damage, deforms, washing away, deviating, suspended span, leads to damage accumulation, occur leaking when serious,
Perforation, rupture, fracture, cause oil spill accident.From 1998-2012 years, the domestic subsea production accident published and reported
In, only submarine pipeline leakage accident totally 19, wherein Bohai Offshore occurs 10, and Yellow Sea occurs 6, and Area of The East China Sea 3 rises；
Natural gas leaking 4 rises, and oil leak 15 rises.As it can be seen that the leakage probability of deep water process facility is very big.In addition, deep water process facility
Investment is big, risk is high, once there is oil leak accident, not only influences oil gas and normally exploits, cause production loss, can also be to sea
Foreign environment causes serious pollution, brings certain impact to local environment, once incendiary source ignites, fire explosion thing occurs
Therefore direct accident injury is caused, consequence is hardly imaginable.
Therefore, the leakage of deep water process facility has become the outstanding problem restricted in China's industrialization development process, right
The accurate detection of deep water process facility leakage also seems more important.However due to deep water process facility leakage have can not
See, the features such as node is wide, form is complicated, detection is difficult, signal is vulnerable to environmental disturbances, the detection method of most land leakages is not applicable
In deep water process facility so that deep water process facility realize early stage of leakage in real time, online and comprehensive monitoring become a great problem,
Important breakthrough is not yet obtained both at home and abroad.
Measure on stress pulse is one of effective means of leak detection, also known as acoustic emission detection, is existed for Fluid leakage problems
Theoretically there is good applicability.Fluid when leaking can elastic stress wave, and by the wall surface of process facility and fluid into
Row is propagated, and can collect the faint stress wave signal of this high frequency using the acoustic emission sensor for being mounted on device external, so
The Leakage of process facility is probed into using the signal afterwards.The technology can be to provide reliable reality to fluid leak detection in engineering
Tool means.But how to guarantee that working healthily state and installation of the acoustic emission detection system under deep-marine-environment are solid
It surely is a difficult point.
Summary of the invention
Stable, good signal transfer functions, needle are provided simultaneously in order to realize acoustic emission detection system under deep-marine-environment
To subsea environment complexity feature, deep water process facility acoustic emission detection system is designed.
To achieve the above object, the design scheme that the present invention uses is as follows:
The device includes external anti pressure devices and internal acoustic emission detection system composition, and anti pressure devices part includes: (1) circle
Cylindricality overpressure resistant barrel；(2) top uses spherical seal head, and designing has watertight plug connector that can be connected with external cable, realizes and supplies
Electricity and signal transmission；(3) spherical seal head flange two sides are welded with hanging ring, are conducive to the fixation of the device and convenient transportation；
(4) device lower part uses flat head, higher No. 45 steel of intensity in common waveguide material is selected, before guaranteeing load performance
It puts and reduces stress wave signal decaying as far as possible；(5) fixation with tested process facility is realized with adjustable yoke configurations in bottom, can
Match each shape, the process facility of size, such as pipeline, production tree；Cylinder and spherical seal head are all made of the higher aluminium of intensity
7050 material of alloy, end socket are all made of flange with cylinder and are fastenedly connected, and realize sealing with the strong O-ring seal of leakproofness；It is interior
Portion acoustic emission detection system part includes acoustic emission sensor, signal-transmitting cable and signal processor.
For complicated subsea environment, the invention has the following beneficial effects:
(1) in view of the hydrostatic pressing and etching problem that face under the conditions of deep-marine-environment, the design use with high specific strength,
The metal of high specific stiffness.
(2) structure is simple, convenient disassembly, and end socket and cylinder can communicate with the outside world as needed, and internal part is facilitated to install
With maintenance.
(3) seal with O ring is used between end socket and cylinder, radial seal is combined with axial seal, and structure is simple, sealing
Reliably.
(4) fixing device for installing of the present invention can realize the matching of each shape, the process facility of size, and applicable surface is wider.
(5) the external anti pressure devices of the present invention can guarantee that internal acoustic emission detection system operates normally under deep-marine-environment, real
Existing process facility leak detection.
Detailed description of the invention
Detailed invention is carried out to a specific embodiment of the invention with reference to the accompanying drawing
Fig. 1 is deep water process facility acoustic emission detection system plan view.
Fig. 2 is deep water process facility acoustic emission detection system perspective view.
Fig. 3 is central spindle perspective view.
Fig. 4 is No leakage frequency spectrum illustrated example.
Fig. 5 is leakage frequency spectrum illustrated example.
Specific embodiment
As shown in Figure 1, the present apparatus is by spherical seal head 1, and hanging ring 2, cylinder 3, O-ring 4, flat head 5, yoke configurations 6,
Acoustic emission sensor 7, signal processor 8 and power supply 9 form.
It is fastened between spherical seal head 1 and cylinder 3 and by flange between flat head 5 and cylinder 3 outside the present apparatus
Connection uses Double seal ring radial seal between spherical seal head 1 and cylinder 3, double density is used between flat head 5 and cylinder 3
Seal, radial seal and axial seal combine, and such sealing means are simple and reliable；Spherical seal head 1 and cylinder 3 are using strong
High 7050 material of aluminium alloy of higher, lighter weight, cost performance is spent, its volume, weight and cost are reduced；Flat head 5 is adopted
It is good with guided wave performance, higher No. 45 steel of intensity, so that the transmission loss of stress wave is reduced, to realize the accurate judgement of leakage；
Hanging ring 2 is welded on spherical seal head flange two sides, is on the one hand convenient for the carrying of whole device, on the other hand rises to the fixation of device
To booster action；Yoke configurations 6 are designed to minor arc shape, and as depicted in figs. 1 and 2, one end uses pin connection, and band can be around this
End rotation, is suitable for various structures and various sizes of process facility size, and the other end uses central spindle as shown in Figure 3, the axis
Core is by will be on two bolt welding pins.
Acoustic emission sensor 7 and signal processor 8 inside device are the main element of sound emission leak detection system, sound
Emission sensor 7 is integrated and is acquired, before 40dB using the integrated transducer of Physical Acoustic Corp (PAC) company
Set amplifier, filter is integrated；AEwin software built in signal processor 8, realize the real-time storage of signal, waveform processing with
Display.
The specific detection method is as follows: acoustic emission signal when deep water process facility is operated normally and leaked passes through bottom flat cover
End socket 5 travels to acoustic emission sensor 7, and acoustic emission sensor 7 is acquired it, amplifies with after conversion, signal is transported to
Signal processor 8, signal processor 8 are handled and are shown to signal, are judged according to Fig. 4 spectrogram without the characteristics of obvious wave crest
Tested process facility is in normal operating condition, there are the characteristics that obvious frequency peak is sentenced in 50-400KHz by Fig. 5 spectrogram
Disconnected tested process facility leaks.
Claims (7)
1. a kind of deep water process facility acoustic emission detection system, including external anti pressure devices and internal acoustic emission detection system.Its
Be characterized in that: the external anti pressure devices include spherical seal head, cylinder, easy guided wave flat head and adjustable clip；Two envelopes
Flanged joint is used between head and cylinder；It is sealed using Double seal ring realization device；Whole device realizes fixed function by adjustable clip
Can, and more sizes are adapted to, Multiple Shape process facility；The internal acoustic emission detection system includes acoustic emission sensor, and signal passes
Transmission cable, signal processor；Acoustic emission signal is transported to signal processor by signal-transmitting cable by acoustic emission sensor, letter
Number processor determines the leak condition of process facility by collected signal.
2. deep water process facility acoustic emission detection system according to claim 1, it is characterised in that: design has spherical envelope
Head.
3. spherical seal head according to claim 2, it is characterised in that: design has watertight card i/f.
4. deep water process facility acoustic emission detection system according to claim 1, it is characterised in that: design flat head makes
Good waveguide material is transmitted with signal.
5. deep water process facility acoustic emission detection system according to claim 1, it is characterised in that: design adjustable clip knot
Structure.
6. deep water process facility acoustic emission detection system according to claim 1, it is characterised in that: use double O shapes between component
Sealing ring, sealed reliable.
7. deep water process facility acoustic emission detection system according to claim 1, which is characterized in that the acoustic emission sensor is
Acquisition and amplification integrated transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059740.5A CN109696282B (en) | 2019-01-22 | 2019-01-22 | Acoustic emission detection device for deepwater process facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059740.5A CN109696282B (en) | 2019-01-22 | 2019-01-22 | Acoustic emission detection device for deepwater process facilities |
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| CN109696282A true CN109696282A (en) | 2019-04-30 |
| CN109696282B CN109696282B (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910059740.5A Expired - Fee Related CN109696282B (en) | 2019-01-22 | 2019-01-22 | Acoustic emission detection device for deepwater process facilities |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114371219A (en) * | 2021-12-27 | 2022-04-19 | 桂林理工大学 | Adapter of replaceable irregular surface acoustic emission sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201803832U (en) * | 2010-09-26 | 2011-04-20 | 长沙理工大学 | Tester using acoustic emission signals to detect valve leakage |
| CN107941428A (en) * | 2017-11-15 | 2018-04-20 | 哈尔滨工程大学 | One kind immersion tank body air-tightness automatic ultrasonic detecting system and detection method |
| CN207779647U (en) * | 2018-02-02 | 2018-08-28 | 武汉地震工程研究院有限公司 | A kind of monitoring device loosened for pipe screw joint |
| CN207830065U (en) * | 2017-12-06 | 2018-09-07 | 江苏蔚联机械股份有限公司 | A kind of environment friendly silencer in workshop |
| CN207964199U (en) * | 2018-01-02 | 2018-10-12 | 中国石油大学(华东) | It is a kind of to mechanical seal end surface liquid film variable signal harvester |
| CN209560818U (en) * | 2019-01-04 | 2019-10-29 | 中国石油大学(华东) | A kind of hydraulic test of pressure vessel tutoring system based on strain detecting and sound emission defects detection |
-
2019
- 2019-01-22 CN CN201910059740.5A patent/CN109696282B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201803832U (en) * | 2010-09-26 | 2011-04-20 | 长沙理工大学 | Tester using acoustic emission signals to detect valve leakage |
| CN107941428A (en) * | 2017-11-15 | 2018-04-20 | 哈尔滨工程大学 | One kind immersion tank body air-tightness automatic ultrasonic detecting system and detection method |
| CN207830065U (en) * | 2017-12-06 | 2018-09-07 | 江苏蔚联机械股份有限公司 | A kind of environment friendly silencer in workshop |
| CN207964199U (en) * | 2018-01-02 | 2018-10-12 | 中国石油大学(华东) | It is a kind of to mechanical seal end surface liquid film variable signal harvester |
| CN207779647U (en) * | 2018-02-02 | 2018-08-28 | 武汉地震工程研究院有限公司 | A kind of monitoring device loosened for pipe screw joint |
| CN209560818U (en) * | 2019-01-04 | 2019-10-29 | 中国石油大学(华东) | A kind of hydraulic test of pressure vessel tutoring system based on strain detecting and sound emission defects detection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114371219A (en) * | 2021-12-27 | 2022-04-19 | 桂林理工大学 | Adapter of replaceable irregular surface acoustic emission sensor |
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