CN101762230A - Measuring device of oxide in metal tube based on bipolar magnetic probe - Google Patents
Measuring device of oxide in metal tube based on bipolar magnetic probe Download PDFInfo
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- CN101762230A CN101762230A CN201010019295A CN201010019295A CN101762230A CN 101762230 A CN101762230 A CN 101762230A CN 201010019295 A CN201010019295 A CN 201010019295A CN 201010019295 A CN201010019295 A CN 201010019295A CN 101762230 A CN101762230 A CN 101762230A
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Abstract
The invention relates to a measuring device of oxide in a metal tube based on a bipolar magnetic probe and the measuring device is used to measure the stacking weight of oxide in an austenite stainless steel tube. The measuring device comprises a magnetic probe and a detecting instrument which are connected by a wire, wherein the magnetic probe is the bipolar magnetic probe and comprises a packaging shell and a U-shaped permanent magnet of which two poles are exposed out of the shell, a magnetic induction coil which is connected with the detecting instrument is wound on the U-shaped permanent magnet; and the detecting instrument is used to display read numbers by switching and adopting light-emitting diodes. The device adopts the bipolar magnetic probe and the magnetic induction coil to receive signals and is not easy to influence by the magnetic saturation phenomenon so that the detection is faster and more accurate; the probe has simple structure, small volume and flexible operation, the measurement range is up to 0-180 degrees; and the light-emitting diodes are used for display, and the read numbers are more intuitive and clearer and are easy to observe.
Description
Technical field
The present invention relates to a kind of harmless oxide pick-up unit of magnetic that is used to measure the weight accumulation of Austenitic stainless steel pipe inner oxide.
Background technology
At present, the known measurement mechanism that is used to measure the Austenitic stainless steel pipe inner oxide generally comprises one pole magnetic probe, magnetic-field-sensitive element and measuring instrument.The one pole magnetic probe is contacted with Austenitic stainless steel pipe, and the magnetic-field-sensitive element records signal and reaches the simulated behavior curve that display screen display tube inner oxide is piled up, by calculating the piling height of oxide.
As the disclosed publication number of Chinese patent communique is CN101122639A, name is called the Chinese invention patent application of " the magnetic damage-free measuring apparatus of austenitic stainless steel tube inner oxide ", it comprises probe and measuring instrument, probe is wired on the measuring instrument with 2～8 signalling channels, and probe is made up of with magnetic-field-sensitive element and permanent magnet package casing, detection; 2～8 detections interior face of cylinder one side of magnetic-field-sensitive component positioning shell is arranged in the probe, and each detects with strip permanent magnet of configuration on the magnetic-field-sensitive element, perhaps is all detections public flaky permanent magnet of configuration on the magnetic-field-sensitive element; Examined the ferromagnetism oxide that may exist in the pipe by the magnetic field magnetisation that permanent magnet is set up, examined the intensity of outer surface of tube wall detection from the stray magnetic field of pipe inner oxide by detecting with the magnetic-field-sensitive element.
But above-mentioned measurement mechanism has its weak point, and Here it is because the one pole magnetic probe is vulnerable to the influence of magnetic saturation phenomenon, causes misjudgment easily.And, show that with curve form measurement result is directly perceived inadequately; In addition, measurement range is little has only 0～75 to spend, and is subjected to the influence of measuring position bigger.
Summary of the invention
Purpose of the present invention, just provide a kind of magnetic saturation phenomenon influence of not being vulnerable to, and can increase the metal tube inner oxide measurement mechanism based on bipolar magnetic probe of weight accumulation that is used to measure the Austenitic stainless steel pipe inner oxide of the dirigibility of the intuitive of measurement demonstration and magnetic probe.
Realize above-mentioned purpose, the technical solution used in the present invention is:
Based on the metal tube inner oxide measurement mechanism of bipolar magnetic probe, include magnetic probe and measuring instrument that lead connects, it is characterized in that: described magnetic probe is bipolar magnetic probe.
Described bipolar magnetic probe, comprise that package casing and the two poles of the earth expose the U-shaped permanent magnet of shell, be wound with the magnetic induction coil that is connected to measuring instrument on the U-shaped permanent magnet, measuring instrument is measured by utilizing the law of electromagnetic induction that flux change is converted to electromotive force.
On the basis of the above, the present invention also can do further improvement:
Described measuring instrument shows reading by switching and adopting light-emitting diodes.
Beneficial effect: this device is not vulnerable to the influence of magnetic saturation phenomenon owing to adopt bipolar magnetic probe, magnetic induction coil received signal, makes that detection is rapider, more accurate, and the little flexible operation of the simple volume of sonde configuration, and measurement range reaches 0～180 degree; Diode displaying, reading is more directly perceived, more clear, very easily observes.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structure of the embodiment of the invention and synoptic diagram when being in the detection position;
Fig. 2 is a display pannel synoptic diagram of the present invention.Among the figure: 1--plastic packaging shell, 2-oxide, the tested pipe of 3-, 4--shape of a hoof permanent magnet, 5--magnetic induction coil, 6--light-emitting diode tube display screen.
Embodiment
Can see from Fig. 1 and Fig. 2, the metal tube inner oxide measurement mechanism that is used to measure the weight accumulation of Austenitic stainless steel pipe inner oxide of the present invention based on bipolar magnetic probe, include magnetic probe and measuring instrument that lead connects, described magnetic probe is bipolar magnetic probe, its structural plastic package casing 1 and N, S exposes at the two poles of the earth the U-shaped permanent magnet 4 of shell, be wound with magnetic induction coil 5 on the U-shaped permanent magnet 4, measuring instrument is measured by utilizing the law of electromagnetic induction that flux change is converted to electromotive force, adopts light emitting diode (LED) display screen 6 to show reading.
During detection: on the bipolar outer wall that is stuck in tested pipe 3 of N, the S of shape of a hoof permanent magnet 4, by the magnetic field that N, the S of shape of a hoof permanent magnet bipolar 5 sets up the oxide 2 in the tested pipe 3 is magnetized, receive the magnetic field intensity signal of the oxide 2 in the pipes 3 by magnetic induction coil 5, connect to pass on the display by lead and show.
Claims (3)
1. the metal tube inner oxide measurement mechanism based on bipolar magnetic probe includes magnetic probe and measuring instrument that lead connects, and it is characterized in that: described magnetic probe is bipolar magnetic probe.
2. the metal tube inner oxide measurement mechanism based on bipolar magnetic probe according to claim 1, it is characterized in that: described bipolar magnetic probe, comprise that package casing and the two poles of the earth expose the U-shaped permanent magnet of shell, be wound with magnetic induction coil on the U-shaped permanent magnet.
3. the metal tube inner oxide measurement mechanism based on bipolar magnetic probe according to claim 1 is characterized in that: described measuring instrument shows reading by the switching and adopting light-emitting diodes display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010019295A CN101762230A (en) | 2010-01-11 | 2010-01-11 | Measuring device of oxide in metal tube based on bipolar magnetic probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010019295A CN101762230A (en) | 2010-01-11 | 2010-01-11 | Measuring device of oxide in metal tube based on bipolar magnetic probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101762230A true CN101762230A (en) | 2010-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010019295A Pending CN101762230A (en) | 2010-01-11 | 2010-01-11 | Measuring device of oxide in metal tube based on bipolar magnetic probe |
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| CN (1) | CN101762230A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901769A (en) * | 2012-11-12 | 2013-01-30 | 湖南省湘电锅炉压力容器检验中心有限公司 | Probe for detecting ferromagnetic substance deposition in heated surface pipe of boiler |
| CN103439401A (en) * | 2013-08-15 | 2013-12-11 | 湖南省湘电锅炉压力容器检验中心有限公司 | Device for detecting deposition amount of ferromagnetic matter in austenite stainless steel bent tube for boiler |
| CN103439402A (en) * | 2013-08-15 | 2013-12-11 | 湖南省湘电锅炉压力容器检验中心有限公司 | Method for detecting deposition blocking degree of ferromagnetic matter in austenite stainless steel bent tube for boiler |
| CN103983177A (en) * | 2014-03-23 | 2014-08-13 | 国家电网公司 | Heated surface tube inner oxide skin accumulation condition detection method |
-
2010
- 2010-01-11 CN CN201010019295A patent/CN101762230A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901769A (en) * | 2012-11-12 | 2013-01-30 | 湖南省湘电锅炉压力容器检验中心有限公司 | Probe for detecting ferromagnetic substance deposition in heated surface pipe of boiler |
| CN102901769B (en) * | 2012-11-12 | 2014-07-09 | 湖南省湘电锅炉压力容器检验中心有限公司 | Probe for detecting ferromagnetic substance deposition in heated surface pipe of boiler |
| CN103439401A (en) * | 2013-08-15 | 2013-12-11 | 湖南省湘电锅炉压力容器检验中心有限公司 | Device for detecting deposition amount of ferromagnetic matter in austenite stainless steel bent tube for boiler |
| CN103439402A (en) * | 2013-08-15 | 2013-12-11 | 湖南省湘电锅炉压力容器检验中心有限公司 | Method for detecting deposition blocking degree of ferromagnetic matter in austenite stainless steel bent tube for boiler |
| CN103439402B (en) * | 2013-08-15 | 2016-02-10 | 湖南省湘电锅炉压力容器检验中心有限公司 | Ferromagnetism thing deposition chocking-up degree detection method in boiler austenitic stainless steel elbow |
| CN103983177A (en) * | 2014-03-23 | 2014-08-13 | 国家电网公司 | Heated surface tube inner oxide skin accumulation condition detection method |
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Application publication date: 20100630 |