CN205720093U - Metal pipeline corrosion data acquisition unit - Google Patents
Metal pipeline corrosion data acquisition unit Download PDFInfo
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- CN205720093U CN205720093U CN201620247219.6U CN201620247219U CN205720093U CN 205720093 U CN205720093 U CN 205720093U CN 201620247219 U CN201620247219 U CN 201620247219U CN 205720093 U CN205720093 U CN 205720093U
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Abstract
This utility model provides a kind of Metal pipeline corrosion data acquisition unit, including: sinusoidal excitation current source, measurement module, channel selecting module, signal amplification module and signal acquisition module, described sinusoidal excitation current source is that described measurement module is powered；Described measurement module is fixed on described metallic conduit outer surface, and described channel selecting module is connected with described measurement module, and described signal amplification module is connected with described channel selecting module, and described signal acquisition module is connected with described signal amplification module；Described signal amplification module includes preamplifier and lock-in amplifier.This utility model can complete the collection to pipeline weak voltage data without using under big current condition, have the highest signal to noise ratio.
Description
Technical field
This utility model belongs to Corrosion monitoring technical field, particularly to a kind of Metal pipeline corrosion data acquisition
Acquisition means.
Background technology
Pipeline transportation as the topmost mode of oil-gas transportation, very big saves conveying cost, improves
The efficiency of conveying and safety.But, corrosive deposit present in pipeline pumped (conveying) medium, can be to being in corruption
Inner-walls of duct in erosion environment causes and corrodes threat greatly.The corrosion monitoring of inner-walls of duct is to ensureing pipeline
Safe operation be of great importance, tradition tube wall inner detection technique based on leakage field and ultrasonic detecting technology inspection
Survey precision is high, but need to excavate or stripping protective layer, and implementation cost is high and affects the conveying of normal medium.
Section of tubing does not has above-mentioned interior detection implementation condition, and the corrosion monitoring of its inner-walls of duct mainly uses list
One or more built-in sensors, but built-in sensors cannot accurately reflect the real corrosion condition of pipeline,
And the resettlement model of sensor also can destroy the integrity of pipeline body, bring new potential safety hazard.
In commercial system widely used on existing market, also occur in that the metal tube of potential difference matrix
Road corrosion data harvester, wherein the excitation current source of potential difference matrix is usually DC constant current power supply.By
In institute's probing between resistance value be typically μ Ω rank so that probe between voltage
Value is big to improve signal to noise ratio as far as possible, and the electric current of usual DC constant current power supply also is intended to big as far as possible, causes
Exciting current usually reaches thirty or forty ampere, even more than.Nonetheless, various interference and the width of noise
Value still may far surpass the amplitude of signal, causes measuring difficulty, or the voltage data result gathered is easy
Disturbed by the external world, caused fluctuation.And big excitation current source also brings along other problem, such as
Easily cause spark, power cable thicker etc..
Utility model content
This utility model provides a kind of Metal pipeline corrosion data acquisition unit, is used for overcoming in prior art
Use electrode matrix collection data monitor Metal pipeline corrosion situation measurement result easily for the external world institute
Interference, and owing to needing to use big excitation current source easily to cause the thickest the lacking of spark, power cable
Fall into.
This utility model provides a kind of Metal pipeline corrosion data acquisition unit, including: sinusoidal excitation current
Source, measurement module, channel selecting module, signal amplification module and signal acquisition module, described sine swashs
Encouraging current source is that described measurement module is powered；
Described measurement module is fixed on described metallic conduit outer surface, described channel selecting module and described survey
Amount module connects, and described signal amplification module is connected with described channel selecting module, described signals collecting mould
Block is connected with described signal amplification module；
Described signal amplification module includes preamplifier and lock-in amplifier.
In one embodiment, described measurement module includes that measuring electrode matrix, reference electrode and temperature passes
Sensor.
In one embodiment, described measurement electrode matrix is fixed on described metallic conduit outer surface, described
Metallic conduit outer surface fixes the reference plate of one and the insulation of described metallic conduit outer surface, described reference electrode
It is fixed on described reference plate with temperature sensor.
In one embodiment, described channel selecting module is connected with described measurement electrode matrix.
In one embodiment, described channel selecting module is two-stage analog switch, wherein, and first order mould
Intend switch to be connected with described measurement electrode matrix, and the logarithm of described first order analog switch and described survey
The columns of amount electrode matrix is identical；
Second level analog switch is connected with described first order analog switch, and described second level analog switch
It it is a pair.
In one embodiment, the measured object signal input part of described preamplifier and described second pole mould
Intending switch to connect, the measured object signal output part of described preamplifier is tested with described lock-in amplifier
Thing signal input part connects.
In one embodiment, the reference signal input of described preamplifier is with described reference electrode even
Connect, the reference signal outfan of described preamplifier and the reference signal input of described lock-in amplifier
Connect.
In one embodiment, the temperature signal input of described preamplifier and described temperature sensor
Connect.
In one embodiment, described signal acquisition module comprises three inputs, phase-locked with described respectively
The measured object signal output part of amplifier, reference signal outfan and the temperature signal of described preamplifier
Outfan connects.
In one embodiment, described signal acquisition module also includes an outfan, described signals collecting mould
The outfan of block is connected with data-analyzing machine.
Enforcement of the present utility model, at least has the advantage that
1, need not destroy the integrity of pipeline body, do not punch at pipe surface, it is achieved the nothing to pipeline
Damage detection and internal corrosion external monitor, it is not necessary to stop production, be not result in the risk revealed.
2, use two-stage analog switch to realize the selection to acquisition channel, amplify nearby gathering signal, keep away
Exempt from that resistor matrix signal cable is long, signal is crossed weak and introduced substantial amounts of noise, cause signal to noise ratio step-down.
3, ac-excited current source is used, it is to avoid the inherent shortcoming of continuous current excitation current source, little electric current
Source can make signal to noise ratio the highest, and big current source easily causes spark, power cable thicker etc..
4, use phase-locked amplifying circuit, it is possible to achieve the collection to small voltage signal, can avoid using
Big electric current encourages, and can also remove temperature drift, DC component and other institutes well simultaneously
There are different frequency interference and effect of noise, there is extraordinary signal to noise ratio.
Accompanying drawing explanation
Fig. 1 is Metal pipeline corrosion data acquisition unit module diagram of the present utility model；
Fig. 2 is the module diagram of this utility model metallic conduit data acquisition unit detection module；
Fig. 3 is to measure electrode matrix in this utility model Metal pipeline corrosion data acquisition unit and with reference to electricity
The arrangement figure of pole；
Fig. 4 is the principle of the channel selecting module of this utility model Metal pipeline corrosion data acquisition unit
Figure.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with this practicality
Accompanying drawing in new embodiment, is carried out clearly and completely the technical scheme in this utility model embodiment
Describe, it is clear that described embodiment is a part of embodiment of this utility model rather than whole realities
Execute example.Based on the embodiment in this utility model, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained under work premise, broadly falls into the scope of this utility model protection.
Term in the specification and claims of this utility model embodiment " include " and " having " and
Their any deformation, it is intended that cover non-exclusive comprising, such as, contain series of steps or
The process of unit, method, system, product or equipment are not necessarily limited to those steps or the list clearly listed
Unit, but can include that the most clearly list or intrinsic for these processes, method, product or equipment
Other step or unit.
Fig. 1 is Metal pipeline corrosion data acquisition unit module diagram of the present utility model.This practicality is new
Type provides a kind of Metal pipeline corrosion data acquisition unit, including: sinusoidal excitation current source 1, measurement mould
Block 2, channel selecting module 3, signal amplification module 4 and signal acquisition module 5, sinusoidal excitation current source
1 powers for measurement module 2；
Measurement module 2 is fixed on metallic conduit 6 outer surface, and channel selecting module 3 is with measurement module 2 even
Connecing, signal amplification module 4 is connected with channel selecting module 3, and signal acquisition module 5 amplifies mould with signal
Block 4 connects；
Signal amplification module 4 includes preamplifier 41 and lock-in amplifier 42.
Sinusoidal excitation current source 1 is a kind of in time according to the voltage and current of SIN function rule change,
Its change is smooth and is not likely to produce higher hamonic wave, is therefore beneficial to insulating properties and the minimizing of protection electric equipment
The operating energy loss of electric equipment.Specifically, this utility model uses sinusoidal excitation current source 1 to make
Supplying party for electric current powers for measurement module 2 by being installed on the outer wall of metallic conduit 6, measures mould
Block 2 can measure the change in voltage on duct wall and by this electricity by the electric current supply in sinusoidal excitation current source 1
Pressure value is transmitted to signal amplification module 4 by channel selecting module 3.Due to the sine in this utility model
The value of the supplied electric current of excitation current source 1 is little, and resistance value produced by measurement module 2 is the least,
Therefore to the error of the magnitude of voltage measured by Jian little ing, improving signal to noise ratio, measured magnitude of voltage can first lead to
The preamplifier 41 crossed in signal amplification module 4 amplifies in advance, reduces circuit to a certain extent
Noise coefficient, be amplified through lock-in amplifier 42 the most again.Lock-in amplifier 42 can be to friendship
Varying signal carries out phase sensitive detection, and its utilization and measured signal have the reference signal of same frequency and phase relation
As benchmark, only to measured signal itself and those with reference signal with frequency (or frequency multiplication), same
The noise component(s) of phase has response.Therefore, the lock-in amplifier 42 in this utility model can significantly suppress nothing
With noise, improve detection signal-to-noise ratio.Further, lock-in amplifier 42 has the highest detection sensitivity, signal
Process fairly simple.
Metal pipeline corrosion data acquisition unit of the present utility model before use, can be first by measurement module
It is fixedly mounted on the outer wall of metallic conduit with the electrode in 2 sinusoidal excitation current sources 1, after installing,
A layer insulating (such as polyester vinyl) is wrapped up again at metallic conduit outer wall, subsequently can be embedding by pipeline
In underground, when embedding pipeline by the electric wire of the upper connection of measurement module 2 and sinusoidal excitation current source 1
On electrode wires stand-down, only it is required to be the electrode wires energising in sinusoidal excitation current source 1 when measuring, sinusoidal
Excitation current source 1 electric after can power to measurement module 2, the electric wire then connected from measurement module 2
Obtain voltage data, therefore use Metal pipeline corrosion data acquisition unit of the present utility model time without
The buried layer of pipeline is excavated, easy and simple to handle, be effectively improved work efficiency.
Owing to the new metallic conduit placed is intact, the most now inner-walls of duct does not haves corrosion condition,
That is be a standard now by sinusoidal excitation current source 1 to measurement module 2 magnitude of voltage that records of power supply
Magnitude of voltage, when pipeline is after excessive erosion, duct wall can be thinning and cause resistance to increase, the electricity now recorded
Pressure value can relatively standard voltage value change, and more just can determine whether out metallic conduit by two magnitudes of voltage
Concrete corrosion condition.
This utility model uses sinusoidal excitation current source 1 supply as the electric current of measurement module 2, work as survey
After amount module 2 records potential difference fall on duct wall, this voltage signal can carry out pre-by preamplifier
First amplifying, then carry out frequency selection through lock-in amplifier, the signal only extracted on effective frequency is put
Greatly, noise signal filtration is excluded.Therefore this utility model passes through sinusoidal excitation current source 1 with front
Put amplifier 41, the cooperating of lock-in amplifier 42, use big continuous current excitation power supply need not
Under, it is possible to achieve the collection to small voltage signal, there is extraordinary signal to noise ratio, for metallic conduit
The judgement of corrosion condition has extraordinary reference value.Both avoided employing low-current source and noise had easily occurred
Than the highest situation, turn avoid big electric current and easily cause electric spark and need to use thicker power cable
Technological deficiency.
Fig. 2 is the module diagram of this utility model metallic conduit data acquisition unit detection module.Please join
Examining Fig. 2, in one embodiment, measurement module 2 includes measuring electrode matrix 21, reference electrode 22 and
Temperature sensor 23.
Wherein, multiple measurement electrodes can according to the arrangement mode of matrix neat be fixed on metallic conduit
On outer wall, the realization of the real-time multizone voltage detecting to metallic conduit.This utility model is to measuring electrode
The line number of matrix 21 and columns, without particular restriction, typically can be fixed on the electrode matrix on pipeline outer wall
It is set to the matrix of 8 × 8, or its multiple.Fig. 3 is this utility model Metal pipeline corrosion data acquisition
Device is measured electrode matrix and the arrangement figure of reference electrode, refer to Fig. 3.In Fig. 3, a region is for surveying
The arrangement figure of amount electrode matrix 21, it is the matrix of 8 × 8.Specifically, the numbering of each electrode catheter is respectively
For k11, k12 ... the probe between k81, k88, k11 and k12 is defined as CH11 to (channel number),
Probe between k12 and k13 is to being defined as CH12.Just it should be noted that in this utility model herein
The electrode input point of string excitation current source 1 is not in the region measuring electrode matrix 21, and measures
The change of 21 monitoring current directions of electrode matrix (i.e. pipeline rout) adjacent measurement electrodes voltage, namely
It it is the potential difference between each probe pair.
Should fix with pipe-line wrapping when reference electrode 22 is fixed with pipeline.In Fig. 3, b region is ginseng
Examining the arrangement figure of electrode 22, reference electrode 22 only a pair, the reference channel of reference electrode 22 is defined as
CH88.In order to improve the voltage measurement accuracy measuring electrode matrix 21 further, can be to measurement module 2
Middle introducing reference electrode 22.The reference voltage that reference electrode 22 records can be surveyed measuring electrode matrix 21
The voltage data obtained is classified, by the interelectrode magnitude of voltage of measurement that will read and reference voltage simultaneously
Compare, it is possible to effectively eliminate the uncertainty of input current.Can also effectively mend with reference to voltage
Repay the change of the electrical conductivity caused due to temperature.
Above-mentioned measuring point electrode matrix 21 and the electrode probe of reference electrode 22 can use ordinary city to use
M3 stud.
Also should fix with pipe-line wrapping when temperature sensor 23 is fixed with pipeline.Temperature sensor 23 exists
Concrete with when pipeline is installed, can use outside the temperature measurement electrode in temperature sensor 23 and pipeline
Wall insulation is fixing.Owing to the size of resistance value can change along with the change of temperature, therefore temperature can be to pipe
The certainty of measurement of road voltage produces impact, and therefore the installation of this temperature sensor 23 can effectively eliminate temperature
It is changed to the impact that the change of pipeline magnitude of voltage is brought.
Further, measuring electrode matrix 21 and be fixed on metallic conduit outer surface, metallic conduit outer surface is solid
Fixed one reference plate insulated with metallic conduit outer surface, reference electrode 22 and temperature sensor 23 are fixed on
On reference plate.Measure electrode matrix 21 can by welding by the way of realize with metallic conduit outer wall non-absolutely
Edge is fixed, and reference plate is chosen with pipeline with the metallic plate of material stack pile, reference electrode and temperature sensor
It is fixed on reference plate, thus the insulation realizing reference electrode and temperature sensor and metallic conduit is fixed.
Further, channel selecting module 3 is connected with measuring electrode matrix 21.Owing to measuring electrode matrix
21 comprise several electrode probe, therefore, it is possible to record several voltage data, therefore by channel selecting module 3
It is connected with measuring electrode matrix 21, makes channel selecting module 3 to measuring the voltage that electrode matrix 21 records
Numerical value carries out selecting to arrange.
Further, channel selecting module 3 is two-stage analog switch, wherein, first order analog switch with
Measure electrode matrix 21 connect, and the logarithm of first order analog switch with measure electrode matrix 21 row
Number is identical；
Second level analog switch is connected with first order analog switch, and second level analog switch is a pair.
Wherein, two-stage analog switch is divided into first order analog switch and second level analog switch.Due to survey
The voltage signal that all passages in amount electrode matrix 21 record is required for being amplified and Filtering Processing, its
It is identical for processing circuit.If be individually amplified each passage and Filtering Processing, then system must
Right huge too fat to move, not only can improve fault rate, and be not easy to later maintenance.For solving this problem,
Channel selecting module in this utility model uses the mode of two-stage analog switch.Fig. 4 is this utility model
The schematic diagram of the channel selecting module of Metal pipeline corrosion data acquisition unit.As shown in Figure 4, to passage
Selecting, wherein the first order analog switch of two-stage analog switch is used for the column signal to resistor matrix (i.e.
The vertical direction of the sense of current in Fig. 3) select, second level analog switch is for resistor matrix
Row signal (i.e. the sense of current in Fig. 3) selects.By two-stage analog switch, it is possible to achieve right
The switching in turn of 56 signalling channels measuring electrode.Owing to sampled signal is differential signal, therefore ranks
Two holding wires need to switch simultaneously.First order analog switch has 8 to (i.e. 16), is responsible for row
The switching of signal, every pair of switch switching 7 road signals；Second level analog switch is a pair, for row letter
Number switch over, have 8 passages.This two-stage analog switch selection mode by Column Row
Complete the channel selecting measuring electrode matrix 21.After channel selecting completes, directly by the voltage of passage
Signal is amplified processing by preamplifier 41 and lock-in amplifier 42.And due to reference electrode 22
Only one of which reference channel is without switching, so reference electrode 22 is without being connected with channel selecting module 3.
This utility model have employed two-stage analog switch and realizes the acquisition channel measuring electrode matrix 21
Select, the voltage signal gathered is amplified nearby, it is to avoid electrode matrix signal cable is long, signal mistake
Weak and introduce the generation that substantial amounts of noise makes the situation of signal to noise ratio step-down.
Further, measured object signal input part and the second pole analog switch of preamplifier 41 connect,
The measured object signal output part of preamplifier 41 connects with the measured object signal input part of lock-in amplifier 42
Connect.
The measured object signal input part of preamplifier 41 and measured object signal output part are used for surveying electrode
The voltage signal that amount electrode matrix 21 records inputs and exports, the measured object letter of lock-in amplifier 42
Number input and measured object signal output part are used for the measurement electrode square processed through preamplifier 41
The voltage signal that battle array 21 records inputs and exports.When the channel selecting of electrode measurement matrix 21 completes
After, the voltage signal of passage first can be entered the measured object signal of preamplifier 41 by the second pole analog switch
Input, can be defeated from the measured object signal of preamplifier 1 after the processing and amplifying of preamplifier 41
Go out end output, and carried out by the measured object signal input part entrance lock-in amplifier 42 of lock-in amplifier 42
Phase-locked process.
Further, the reference signal input of preamplifier 41 is connected with reference electrode 22, preposition
The reference signal outfan of amplifier 41 is connected with the reference signal input of lock-in amplifier 42.
The reference signal input of preamplifier 41 and reference signal outfan are used for reference electrode 22
The voltage signal recorded inputs and exports, the reference signal input of lock-in amplifier 42 and reference letter
The voltage signal that number outfan is used for recording the reference electrode 22 processed through preamplifier 41 is carried out
Input and output.After reference electrode 22 completes potential measurement, the voltage signal of reference channel can be introduced into
The reference signal input of preamplifier 41, can be after the processing and amplifying of preamplifier 41 in the past
Put the reference signal outfan output of amplifier 41, and by the reference signal input of lock-in amplifier 42
Enter lock-in amplifier 42 and carry out phase-locked process.
Further, the temperature signal input of preamplifier 41 is connected with temperature sensor 23.
The temperature signal input of preamplifier 41 and temperature outfan are used for surveying temperature sensor 23
The temperature voltage signal obtained inputs and exports.After temperature sensor 23 completes potential measurement, temperature
The temperature voltage signal that sensor 23 records can be introduced into the temperature input of preamplifier 41, passes through
Can export from the temperature outfan of preamplifier 41 after the processing and amplifying of preamplifier 41.
Signal acquisition module 5 of the present utility model comprises three inputs, respectively with lock-in amplifier 42
The temperature signal outfan of measured object signal output part, reference signal outfan and preamplifier 41 is even
Connecing, signal acquisition module 5 is used for being phase locked the measured object signal after amplification processor 42 processes, being locked
Reference signal after phase amplification processor 42 process and the temperature signal after preamplifier 41 process are respectively
It is acquired and stores.Signal acquisition module 5 also includes an outfan, the output of signal acquisition module 5
End is connected with data-analyzing machine.The voltage data gathered can be analyzed by data-analyzing machine, can think,
Data-analyzing machine comprises measured standard voltage value when metallic conduit does not corrodes, by the voltage that will record
Data compare with standard voltage value, the corrosion condition of analysis conduit.Due to electrode measurement matrix 21
The position of each electrode catheter is fixing, and data-analyzing machine also is able to be originated by the probe of voltage data
Passage judges that metallic conduit occurs the position of corrosion.
Metal pipeline corrosion data acquisition unit simple in construction of the present utility model, easy to use, it is possible to real
The now Non-Destructive Testing to pipeline, it is not necessary to stop production, is not result in the risk revealed.And pass through sinusoidal excitation
Current source and the setting of lock-in amplifier, not only avoid the inherent shortcoming using continuous current excitation power supply, also
It is capable of the collection to weak voltage signals, there is the highest signal to noise ratio.This utility model is adopted simultaneously
Realizing the selection to acquisition channel with two-stage analog switch, the precise acquisition for voltage data is established further
Basis.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, and
Non-to its restriction；Although this utility model being described in detail with reference to foregoing embodiments, ability
The those of ordinary skill in territory is it is understood that it still can be to the technical scheme described in foregoing embodiments
Modify, or the most some or all of technical characteristic is carried out equivalent；And these amendment or
Person replaces, and does not make the essence of appropriate technical solution depart from the model of this utility model each embodiment technical scheme
Enclose.
Claims (10)
1. a Metal pipeline corrosion data acquisition unit, it is characterised in that including: sinusoidal excitation current source, measurement module, channel selecting module, signal amplification module and signal acquisition module, described sinusoidal excitation current source is that described measurement module is powered；
Described measurement module is fixed on described metallic conduit outer surface, and described channel selecting module is connected with described measurement module, and described signal amplification module is connected with described channel selecting module, and described signal acquisition module is connected with described signal amplification module；
Described signal amplification module includes preamplifier and lock-in amplifier.
Data acquisition unit the most according to claim 1, it is characterised in that described measurement module includes measuring electrode matrix, reference electrode and temperature sensor.
Data acquisition unit the most according to claim 2, it is characterized in that, described measurement electrode matrix is fixed on described metallic conduit outer surface, described metallic conduit outer surface fixes the reference plate of one and the insulation of described metallic conduit outer surface, and described reference electrode and temperature sensor are fixed on described reference plate.
Data acquisition unit the most according to claim 2, it is characterised in that described channel selecting module is connected with described measurement electrode matrix.
Data acquisition unit the most according to claim 2, it is characterized in that, described channel selecting module is two-stage analog switch, wherein, first order analog switch is connected with described measurement electrode matrix, and the logarithm of described first order analog switch is identical with the columns of described measurement electrode matrix；
Second level analog switch is connected with described first order analog switch, and described second level analog switch is a pair.
Data acquisition unit the most according to claim 5, it is characterized in that, the measured object signal input part of described preamplifier is connected with described second level analog switch, and the measured object signal output part of described preamplifier is connected with the measured object signal input part of described lock-in amplifier.
Data acquisition unit the most according to claim 2, it is characterized in that, the reference signal input of described preamplifier is connected with described reference electrode, and the reference signal outfan of described preamplifier is connected with the reference signal input of described lock-in amplifier.
Data acquisition unit the most according to claim 1, it is characterised in that the temperature signal input of described preamplifier is connected with described temperature sensor.
Data acquisition unit the most according to claim 1, it is characterized in that, described signal acquisition module comprises three inputs, and the temperature signal outfan with measured object signal output part, reference signal outfan and the described preamplifier of described lock-in amplifier connects respectively.
Data acquisition unit the most according to claim 9, it is characterised in that described signal acquisition module also includes that an outfan, the outfan of described signal acquisition module are connected with data-analyzing machine.
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| CN201620247219.6U CN205720093U (en) | 2016-03-29 | 2016-03-29 | Metal pipeline corrosion data acquisition unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677717A (en) * | 2017-08-22 | 2018-02-09 | 哈尔滨工程大学 | A kind of outer corrosion testing device of submarine pipeline and detection method |
| CN108318529A (en) * | 2018-02-02 | 2018-07-24 | 中国石油大学(华东) | For the temperature-compensation method of voltage detecting, electric field fingerprint detection method and system |
| CN108759984A (en) * | 2018-07-25 | 2018-11-06 | 江苏雅凯医疗科技有限公司 | A kind of transparent pipeline liquid level emasuring device |
| CN110133054A (en) * | 2019-06-14 | 2019-08-16 | 中国特种设备检测研究院 | A kind of metallic conduit characteristic analysis system |
| CN110133053A (en) * | 2019-06-14 | 2019-08-16 | 中国特种设备检测研究院 | A kind of Metal pipeline corrosion monitoring method and system |
| CN110220947A (en) * | 2019-06-14 | 2019-09-10 | 中国特种设备检测研究院 | A kind of corrosive pipeline degree determines method |
| CN114624313A (en) * | 2022-03-14 | 2022-06-14 | 中国特种设备检测研究院 | Corrosion monitoring system |
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2016
- 2016-03-29 CN CN201620247219.6U patent/CN205720093U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677717A (en) * | 2017-08-22 | 2018-02-09 | 哈尔滨工程大学 | A kind of outer corrosion testing device of submarine pipeline and detection method |
| CN108318529B (en) * | 2018-02-02 | 2020-05-08 | 中国石油大学(华东) | Temperature compensation method for voltage detection, electric field fingerprint detection method and system |
| CN108318529A (en) * | 2018-02-02 | 2018-07-24 | 中国石油大学(华东) | For the temperature-compensation method of voltage detecting, electric field fingerprint detection method and system |
| CN108759984A (en) * | 2018-07-25 | 2018-11-06 | 江苏雅凯医疗科技有限公司 | A kind of transparent pipeline liquid level emasuring device |
| CN108759984B (en) * | 2018-07-25 | 2023-12-26 | 江苏雅凯医疗科技有限公司 | Transparent pipeline liquid level measurement device |
| CN110133054A (en) * | 2019-06-14 | 2019-08-16 | 中国特种设备检测研究院 | A kind of metallic conduit characteristic analysis system |
| CN110220947A (en) * | 2019-06-14 | 2019-09-10 | 中国特种设备检测研究院 | A kind of corrosive pipeline degree determines method |
| CN110220947B (en) * | 2019-06-14 | 2021-11-30 | 中国特种设备检测研究院 | Method for determining corrosion degree of pipeline |
| CN110133053A (en) * | 2019-06-14 | 2019-08-16 | 中国特种设备检测研究院 | A kind of Metal pipeline corrosion monitoring method and system |
| CN110133053B (en) * | 2019-06-14 | 2024-02-02 | 中国特种设备检测研究院 | Metal pipeline corrosion monitoring method and system |
| CN110133054B (en) * | 2019-06-14 | 2024-02-02 | 中国特种设备检测研究院 | Metal pipeline characteristic analysis system |
| CN114624313A (en) * | 2022-03-14 | 2022-06-14 | 中国特种设备检测研究院 | Corrosion monitoring system |
| CN116256305A (en) * | 2022-03-14 | 2023-06-13 | 中国特种设备检测研究院 | Corrosion monitoring system and method |
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