CN1629609A - Plug-in electromagnetic flowmeter sensor - Google Patents
Plug-in electromagnetic flowmeter sensor Download PDFInfo
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- CN1629609A CN1629609A CN 200310109710 CN200310109710A CN1629609A CN 1629609 A CN1629609 A CN 1629609A CN 200310109710 CN200310109710 CN 200310109710 CN 200310109710 A CN200310109710 A CN 200310109710A CN 1629609 A CN1629609 A CN 1629609A
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Abstract
A plug-in electromagnetic flowmeter sensor includes an electrode, coils and a sheathing characterizing that two sets of coils are set at both sides of the electrode and housing is set between the coils and the sheathing. Since the housing can stabilize magnetic field, the invented plug-in installation will not generate inaccurate test due to different pipe diameters in site use and rating. So, the plug-in magnetic flow- meter can be rated by rating devices of small diameters and small flow, especially suitable for the flow test with the pipe diameter greater than 150mm.
Description
Technical field: the invention belongs to the electromagnet flow meter sensor technical field, relate in particular to a kind of sensor of inserted electromagnet flow meter.
Background technology: electromagnetic flowmeter is made up of sensor and converter two large divisions, converter wherein provides field power supply to make it produce magnetic field to sensor, measured medium produces induced potential because of the cutting magnetic line that flows, sensor electrode is given converter with the induced potential signal feedback, become standard signal output through the converter processing and amplifying, finish the measurement of flow.According to faraday electromagnetic induction, induced potential is directly proportional with magnetic field intensity, conductor length and movement velocity, because when a fixing pipeline is carried out flow measurement, its " conductor length " can be considered certain, have only when magnetic field intensity one timing, induced potential can be corresponding one by one with velocity of medium.If magnetic field intensity changes, even induced potential also can change under identical flow velocity, so just must bring following problems: the sensor of existing inserted electromagnet flow meter, the sensor of the various inserted electromagnet flow meters that use in CN2202916Y disclosed " sensing device of inserted electromagnet flow meter " and CN2447733 disclosed " a kind of electromagnetism fluid-velocity survey sensing probe " and the actual life for example, they all have a common defective, be the calibration value of product when dispatching from the factory, when taking on-the-spot the installation, deviation often appears, this has just brought very big trouble to the user, often need the scene to reset, trace it to its cause and just be: the magnetic field of inserted electromagnet flow meter sensor is open, the magnetic line of force around the electrode distributes uncertain, cause the scene and the timing signal magnetic field intensity of dispatching from the factory inconsistent, so on-the-spot the needs demarcated again.
Summary of the invention:
The objective of the invention is, at above-mentioned defective, a kind of inserted electromagnet flow meter sensor is provided, this sensor has stable magnetic field, therefore its induced potential intensity can not change because of sensor line size of living in changes, and self the widely-used convenience that provides is provided.
Technical solution of the present invention is: a kind of inserted electromagnet flow meter sensor, comprise electrode, coil and sheath, and it is characterized in that: between coil and sheath, be provided with bell housing.
Aforesaid sensor can set up two groups of coils in the both sides of electrode separately.
Compared with prior art, because the setting of bell housing, having shielded sensor sidewall magnetic field on every side exposes, avoided under the different tube diameters condition by the magnetic field intensity difference around the electrode, realized the stable of sensor magnetic field, therefore the electric potential signal that sensor detected is only relevant with velocity of medium, has guaranteed that sensor extracts the uniqueness and the accuracy of flow information.That is to say that because of this bell housing has played the effect of stabilizing magnetic field, so the calibration value when plug-in installation of the present invention can not influence product export, just thoroughly having solved prior art exists aforementioned disadvantages for this.Facts have proved, when sensor of the present invention is adorned in choosing at the scene, need not carry out on-site proving, thereby guarantee the accuracy and the reliability of product.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Embodiment: as shown in the figure, inserted electromagnet flow meter sensor provided by the invention mainly is made up of electrode 1, coil 2 and sheath 3 etc., and it is characterized in that: the coil 2 here has two groups, be located at the both sides of electroplax 1 respectively, and between coil 2 and sheath 3, be provided with bell housing 4.The effect of coil 2 is to produce magnetic field, and the effect of electrode 1 is to detect induced potential, and they have lead to be connected with converter by sensor respectively; Bell housing 4 maskable sensors sides Distribution of Magnetic Field play the effect that makes magnetic field stable.The present invention is specially adapted to the flow measurement of diameter greater than the 150mm pipeline, this flowmeter need not stop production, cutout, emptying, disconnected pipe, use related tool can realize online perforate, installation, dismounting, can reduce a large amount of engineering constructions, reduce construction costs, especially be suitable for the flow measurement of confession, drainage pipeline networks.
Claims (2)
1, a kind of inserted electromagnet flow meter sensor comprises electrode, coil and sheath, it is characterized in that: be provided with bell housing (4) between coil (2) and sheath (3).
2, according to the inserted electromagnet flow meter sensor of claim 1, it is characterized in that: be provided with two groups of coils (2) in the both sides of electrode (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109710 CN1629609A (en) | 2003-12-18 | 2003-12-18 | Plug-in electromagnetic flowmeter sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310109710 CN1629609A (en) | 2003-12-18 | 2003-12-18 | Plug-in electromagnetic flowmeter sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1629609A true CN1629609A (en) | 2005-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310109710 Pending CN1629609A (en) | 2003-12-18 | 2003-12-18 | Plug-in electromagnetic flowmeter sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1629609A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427901C (en) * | 2006-12-18 | 2008-10-22 | 浙江大学 | Dry calibrating method of inserted electromagnet flow meter sensor |
| CN101419084B (en) * | 2007-10-23 | 2010-11-03 | 庄革 | Plug-in permanent magnet flow transmitter |
| CN113008336A (en) * | 2021-02-18 | 2021-06-22 | 合肥工业大学 | Method for realizing permanent magnet sodium flowmeter cross-correlation method in-situ calibration based on error correction |
-
2003
- 2003-12-18 CN CN 200310109710 patent/CN1629609A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427901C (en) * | 2006-12-18 | 2008-10-22 | 浙江大学 | Dry calibrating method of inserted electromagnet flow meter sensor |
| CN101419084B (en) * | 2007-10-23 | 2010-11-03 | 庄革 | Plug-in permanent magnet flow transmitter |
| CN113008336A (en) * | 2021-02-18 | 2021-06-22 | 合肥工业大学 | Method for realizing permanent magnet sodium flowmeter cross-correlation method in-situ calibration based on error correction |
| CN113008336B (en) * | 2021-02-18 | 2022-07-12 | 重庆川仪自动化股份有限公司 | Method for realizing permanent magnet sodium flowmeter cross-correlation method in-situ calibration based on error correction |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |