CN205607831U - Online inductance probe corrosion monitoring system - Google Patents
Online inductance probe corrosion monitoring system Download PDFInfo
- Publication number
- CN205607831U CN205607831U CN201620344597.6U CN201620344597U CN205607831U CN 205607831 U CN205607831 U CN 205607831U CN 201620344597 U CN201620344597 U CN 201620344597U CN 205607831 U CN205607831 U CN 205607831U
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- probe rod
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Abstract
The utility model relates to an online inductance probe corrosion monitoring system is that the effective method that the material is corroded is monitored to an indirectness, is based on the loss of measurement corrosion of metals, and the alternating current signal who arouses through measurement corrosion coupon corruption attenuate changes the corrosion losses speed of calculating. It is inside and effective fixed to stretch into the measurement medium pipeline to the probe, receive corrode back probe measurement test block thickness reduce can arouse that alternating current signal changes, apply alternating current signal to measuring the test block, attenuate volume and the corrosion rate of measurement element are calculated through alternating current signal's change to the corrosion rate who replaces the measurement medium pipeline with the corruption attenuate speed of measuring the test block. This kind of monitoring system can be simply shows the corruption condition of pipeline accurate and directly perceivedly in the computer, made things convenient for manual operation and detection.
Description
Technical field
This utility model relates to a kind of online inductance probe corrosion monitoring system, is based on measuring metal erosion loss, and the AC signal change caused by measuring corrosion coupon corrosion thinning calculates corrosion losses speed.
Background technology
At present, in oil gas field production process, in-service equipment and pipeline are in severe working environment the most all the time: external environment condition high temperature, high pressure, high flow rate and change constantly；Internal medium strong corrosive medium is numerous, and pipe-line is all easily caused internal corrosion by a small amount of free water, acidic components (such as carbon dioxide, hydrogen sulfide etc.), salt, air oxygen composition and antibacterial etc..Internal and external environment joint effect oil and gas pipes, causes pipeline to be susceptible to fracture and oil liquid leakage, even causes explosion accident.Platform leakage of oil is all directly or indirectly relevant with corrosion with pipe explosion accident, and oil and gas pipes is as the visual plant of production of hydrocarbons facility, and its safe operation counts for much, and pipeline corrosion monitoring has become as extensive concern technical problem.
The main method of pipeline corrosion monitoring has hanging slice method, resistance probe method, LPR method and electrochemistry noise method.Every kind of method all has the advantage of oneself, but there is certain limitation.
Some corrosion measurement products have been had to be employed at present.In these are measured, the probe measuring rate of metal corrosion is the basis of monitoring.But existing probe is to be placed in medium by whole tubular probe, and pipeline only one of which surface contacts with medium, and the corrosion that the corrosion of tubular probe is regarded as pipeline can exist bigger error.
Summary of the invention
The problem that the purpose of this utility model is to solve the monitoring of above-mentioned pipeline corrosion, by probe is extend into measured medium channel interior the most fixing, after being corroded, the reduction of probe measurement thickness of test piece can cause AC signal to change, AC signal is applied to measuring test piece, come Reducing thickness and the corrosion rate of computation and measurement element by the change of AC signal, thus replace the corrosion rate of measured medium pipeline by the corrosion thinning speed measuring test piece.
For this, this utility model provides a kind of online inductance probe corrosion monitoring system, including the inductance probe being contained in pipeline, the Data Analysis Services module being connected with inductance probe and computer, described inductance probe includes probe rod, it is positioned at the air plug of probe rod afterbody and is positioned at the measuring cell of probe rod, measuring cell is provided with measurement test piece and temperature-compensating test piece, described measurement test piece is positioned at probe rod head position, measure test piece one end connect temperature-compensating test piece by transition piece and form L-type structure therewith, the free end measuring test piece and temperature-compensating test piece draws signal lead respectively as resultant signal input and output, signal lead is drawn respectively as measuring the input of test piece signal and output in the two ends measuring test piece, signal lead is drawn respectively as the input of temperature-compensating test piece signal and output in the two ends of temperature-compensating test piece；
The lead-in wire difference linking probe corresponding air plug of bar afterbody of resultant signal input and output, measurement test piece signal input and output and the input of temperature-compensating test piece signal and output forms six latches, and each latch is electrically connected to computer by Data Analysis Services module.
Described test piece of measuring is the laminated structure being positioned at probe rod head end, and one faces sealing in probe rod, and another side is outer exposed towards probe rod.
Described probe rod is internal is full of fluid sealant.
Described measurement test piece material is identical with tested pipeline material.
The thickness of described probe rod is at least greater than 2.5mm, and described probe rod and air plug all use corrosion-resistant material, and the life-span of the corrosion fatigue life probe rod to be longer than of air plug.
Described Data Analysis Services module and air plug connecting portion are the plate being provided with six jacks, six jacks are for receiving the signal of telecommunication of each latch of air plug transmission respectively, and six latches that probe rod afterbody air plug is formed are connected to Data Analysis Services module by inserting jack.
Described plate marginal position is provided with the hole slot on its axial direction, and probe rod afterbody is positioned at the position outside air plug and is provided with along the axial card article of probe rod, and this card article is suitable with the hole slot at plate edge.
Described probe rod afterbody air plug uses the mode of spot welding to weld after being connected with the plate being provided with six jacks.
Described lead-in wire connects air plug and test piece is measured in connection, the position of temperature-compensating test piece is respectively adopted spot-welded.
The internal diameter of described probe rod is 20mm.
Compared with prior art, the beneficial effects of the utility model or advantage are:
This online inductance probe corrosion monitoring system that this utility model provides, it is the effective ways of a kind of indirect monitoring material corrosion, being based on measuring metal erosion loss, the AC signal change caused by measuring corrosion coupon corrosion thinning calculates corrosion losses speed.Probe is extend into measured medium channel interior the most fixing, after being corroded, the reduction of probe measurement thickness of test piece can cause AC signal to change, AC signal is applied to measuring test piece, come Reducing thickness and the corrosion rate of computation and measurement element by the change of AC signal, thus replace the corrosion rate of measured medium pipeline by the corrosion thinning speed measuring test piece.This monitoring system, it is possible to simply accurately and intuitively by the corrosion condition of pipeline show in a computer, facilitate manual operation and detection.
Accompanying drawing explanation
Below with reference to accompanying drawing, this utility model is described in further details.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is jack schematic diagram.
The right view of Fig. 3 view 1.
Description of reference numerals: 1, probe rod；2, air plug；3, test piece is measured；4, temperature-compensating test piece；5, fluid sealant；6, transition piece.
Detailed description of the invention
nullThe present embodiment provides a kind of online inductance probe corrosion monitoring system，In conjunction with Fig. 1、Shown in Fig. 2 and Fig. 3，Including the inductance probe being contained in pipeline、The Data Analysis Services module being connected with inductance probe and computer，Described inductance probe includes probe rod 1、It is positioned at the air plug 2 of probe rod 1 afterbody and is positioned at the measuring cell of probe rod 1，Measuring cell is provided with measurement test piece 3 and temperature-compensating test piece 4，Described measurement test piece 3 is positioned at probe rod head position，Measure test piece 3 one end connect temperature-compensating test piece 7 by transition piece 6 and form L-type structure therewith，The free end measuring test piece 3 and temperature-compensating test piece 4 draws signal lead respectively as resultant signal input and output，Signal lead is drawn respectively as measuring the input of test piece signal and output in the two ends measuring test piece 3，Signal lead is drawn respectively as the input of temperature-compensating test piece signal and output in the two ends of temperature-compensating test piece 4；
As shown in Figure 2, the lead-in wire corresponding air plug of linking probe bar 1 afterbody 2 respectively of resultant signal input and output, measurement test piece signal input and output and the input of temperature-compensating test piece signal and output forms six latches, each latch is electrically connected to computer by Data Analysis Services module, and lead-in wire connects air plug 2 and test piece 3 is measured in connection, the position of temperature-compensating test piece 4 is respectively adopted spot-welded.
This structure of the present embodiment is arranged on pipeline to be monitored, inductance probe head is stretched in pipeline, first pass through computer and apply an ac signal to inductance probe, and utilize computer to receive ac signal.Corrosion along with pipeline, measurement test piece 3 in inductance probe also can ensue identical corrosion, along with the corrosion measuring test piece 3, it is the most thinning, and then resistance value can produce change, after resistance value changes, the ac signal being applied to its two ends also can ensue change, display intuitively at computer, by analyzing the change of AC signal it is known that corrosion condition in pipeline.
Temperature-compensating test piece 4 is identical with the resistance value measuring test piece 3, mainly for measure test piece 3 along with after variations in temperature resistance change and compensate, it is ensured that measure test piece 3 and can accurately show the resistance under certain thin degree.
In order to preferably reflect the corrosion condition in pipeline, improve further on the basis of said structure, here, as shown in Figure 3, measuring test piece 3 is the laminated structure being positioned at probe rod 1 head end, and one faces sealing in probe rod, and another side is outer exposed towards probe rod.
Because inductance probe measuring principle is the corrosion thinning speed replacing tested pipeline by the corrosion thinning speed approximation measuring test piece 3, so, measure test piece 3 material identical with tested pipeline material.
Measure the thickness that test piece 3 is available for consuming, after useful life longevity runs out of, probe destruction, probe is changed the most in time after probe destruction, if but can not change in time, simply affecting measurement data, representative conference does not goes out safety problem, and the safe life of probe is to seal to fill in the extent of corrosion by probe rod 1 and probe rod 1 to ensure.Expose aerial probe rod 1 and just there will be Seepage from internal corrosion perforation inefficacy.The internal diameter of probe rod 1 is Φ 20mm, and the thickness of probe rod 1 is at least greater than 2.5mm, and afterbody air plug 2 is acid-alkali-corrosive-resisting, the life-span of the corrosion fatigue life probe rod to be longer than 1 of air plug 2 for a boat.So the safe life estimating probe only need to consider that probe rod 1 is bored a hole a factor because of internal corrosion, and before probe did not lose efficacy, it is internal that medium is not likely to enter probe rod, and meanwhile, probe rod 1 is internal is full of fluid sealant 5, also can ensure not have dielectric leakage.
In order to ensure that the correct transmission of data is not lost, ensure the compactness that lead-in wire connects, prevent from coming off or loose contact, here, Data Analysis Services module and air plug 2 connecting portion are the plate being provided with six jacks, six jacks are for receiving the signal of telecommunication of each latch of air plug 2 transmission respectively, and six latches that probe rod 1 afterbody air plug 2 is formed are connected to Data Analysis Services module by inserting jack.
As in figure 2 it is shown, jack one has six, respectively A, B, C, D, E, F, wherein A and B is respectively and always goes out and always enter, and is used for showing total alternating voltage；C and D is respectively electrical connection and measures the jack at test piece 3 two ends, for showing the alternating voltage measuring test piece 3 two ends；E and F is respectively the jack electrically connecting temperature-compensating test piece 4 two ends, the alternating voltage at test piece 4 two ends is compensated for displays temperature, therefore the position of each jack is certain, grafting for the ease of latch, it is provided with the hole slot on its axial direction at plate marginal position, probe rod 1 afterbody is positioned at the position outside air plug 2 and is provided with along the axial card article of probe rod 1, and this card article is suitable with the hole slot at plate edge.
In order to more be fixed after latch grafting, probe rod 1 afterbody air plug 2 uses the mode of spot welding to weld after being connected with the plate being provided with six jacks.
In sum, this online inductance probe corrosion monitoring system that this utility model provides, being the effective ways of a kind of indirect monitoring material corrosion, be based on measuring metal erosion loss, the AC signal change caused by measuring corrosion coupon corrosion thinning calculates corrosion losses speed.Probe is extend into measured medium channel interior the most fixing, after being corroded, the reduction of probe measurement thickness of test piece can cause AC signal to change, AC signal is applied to measuring test piece, come Reducing thickness and the corrosion rate of computation and measurement element by the change of AC signal, thus replace the corrosion rate of measured medium pipeline by the corrosion thinning speed measuring test piece.This monitoring system, it is possible to simply accurately and intuitively by the corrosion condition of pipeline show in a computer, facilitate manual operation and detection.
Exemplified as above is only to illustration of the present utility model, is not intended that the restriction to protection domain of the present utility model, within the every and same or analogous design of this utility model belongs to protection scope of the present invention.
Claims (10)
1. online inductance probe corrosion monitoring system, the Data Analysis Services module being connected with inductance probe including the inductance probe being contained in pipeline and computer, it is characterised in that: described inductance probe includes probe rod (1), the air plug (2) being positioned at probe rod (1) afterbody and is positioned at the measuring cell of probe rod (1)；
Measuring cell is provided with measurement test piece (3) and temperature-compensating test piece (4), described measurement test piece (3) is positioned at probe rod (1) head position, measure test piece (3) one end connect temperature-compensating test piece (4) by transition piece (6) and form L-type structure therewith, the free end measuring test piece (3) and temperature-compensating test piece (4) draws signal lead respectively respectively as resultant signal input and output, signal lead is drawn respectively as measuring the input of test piece signal and output in the two ends measuring test piece (3), signal lead is drawn respectively as the input of temperature-compensating test piece signal and output in the two ends of temperature-compensating test piece (4)；
The lead-in wire difference corresponding air plug of linking probe bar (1) afterbody (2) of resultant signal input and output, measurement test piece signal input and output and the input of temperature-compensating test piece signal and output forms six latches, and each latch is electrically connected to computer by Data Analysis Services module.
2. online inductance probe corrosion monitoring system as claimed in claim 1, it is characterized in that: described measurement test piece (3) is the laminated structure being positioned at probe rod (1) head end, and one faces sealing in probe rod (1), another side is the most exposed towards probe rod (1).
3. online inductance probe corrosion monitoring system as claimed in claim 1 or 2, it is characterised in that: described probe rod (1) is internal is full of fluid sealant (5).
4. online inductance probe corrosion monitoring system as claimed in claim 3, it is characterised in that: described measurement test piece (3) material is identical with tested pipeline material.
5. online inductance probe corrosion monitoring system as claimed in claim 1, it is characterized in that: the thickness of described probe rod (1) is at least greater than 2.5mm, described probe rod (1) and air plug (2) all use corrosion-resistant material, and the life-span of corrosion fatigue life probe rod to be longer than (1) of air plug (2).
6. online inductance probe corrosion monitoring system as claimed in claim 1, it is characterized in that: described Data Analysis Services module and air plug (2) connecting portion are the plate being provided with six jacks, six jacks are for receiving the signal of telecommunication of air plug (2) each latch transmission respectively, and six latches that probe rod (1) afterbody air plug (2) is formed are connected to Data Analysis Services module by inserting jack.
7. online inductance probe corrosion monitoring system as claimed in claim 6, it is characterized in that: described plate marginal position is provided with the hole slot on its axial direction, probe rod (1) afterbody is positioned at the position in air plug (2) outside and is provided with along the axial card article of probe rod (1), and this card article is suitable with the hole slot at plate edge.
Online inductance probe corrosion monitoring system the most as claimed in claims 6 or 7, it is characterised in that: described probe rod (1) afterbody air plug (2) uses the mode of spot welding to weld after being connected with the plate being provided with six jacks.
9. online inductance probe corrosion monitoring system as claimed in claim 1, it is characterised in that: described lead-in wire connects air plug (2) and test piece (3) is measured in connection, the position of temperature-compensating test piece (4) is respectively adopted spot-welded.
10. online inductance probe corrosion monitoring system as claimed in claim 1, it is characterised in that: the internal diameter of described probe rod (1) is 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620344597.6U CN205607831U (en) | 2016-04-24 | 2016-04-24 | Online inductance probe corrosion monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620344597.6U CN205607831U (en) | 2016-04-24 | 2016-04-24 | Online inductance probe corrosion monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN205607831U true CN205607831U (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620344597.6U Withdrawn - After Issue CN205607831U (en) | 2016-04-24 | 2016-04-24 | Online inductance probe corrosion monitoring system |
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| CN (1) | CN205607831U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290274A (en) * | 2017-05-15 | 2017-10-24 | 中国石油化工股份有限公司 | A kind of high voltage induction probe for measuring rate of metal corrosion and its compensation method |
| CN107725027A (en) * | 2017-09-25 | 2018-02-23 | 中海油常州涂料化工研究院有限公司 | A kind of online downhole well corrosion monitoring system |
| CN111855548A (en) * | 2020-07-21 | 2020-10-30 | 中山大学 | Monitoring probe, system and method for corrosion damage of pressure pipeline |
| CN112098316A (en) * | 2019-06-18 | 2020-12-18 | 中国石油化工股份有限公司 | Nonlinear compensation method and device for inductance probe |
| CN115127984A (en) * | 2022-06-30 | 2022-09-30 | 中国船舶重工集团公司第七一九研究所 | Corrosion warning sensor |
-
2016
- 2016-04-24 CN CN201620344597.6U patent/CN205607831U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290274A (en) * | 2017-05-15 | 2017-10-24 | 中国石油化工股份有限公司 | A kind of high voltage induction probe for measuring rate of metal corrosion and its compensation method |
| CN107725027A (en) * | 2017-09-25 | 2018-02-23 | 中海油常州涂料化工研究院有限公司 | A kind of online downhole well corrosion monitoring system |
| CN112098316A (en) * | 2019-06-18 | 2020-12-18 | 中国石油化工股份有限公司 | Nonlinear compensation method and device for inductance probe |
| CN111855548A (en) * | 2020-07-21 | 2020-10-30 | 中山大学 | Monitoring probe, system and method for corrosion damage of pressure pipeline |
| CN111855548B (en) * | 2020-07-21 | 2021-11-09 | 中山大学 | Monitoring probe, system and method for corrosion damage of pressure pipeline |
| CN115127984A (en) * | 2022-06-30 | 2022-09-30 | 中国船舶重工集团公司第七一九研究所 | Corrosion warning sensor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160928 Effective date of abandoning: 20180205 |