CN205879265U - Electromagnetic flowmeter - Google Patents
Electromagnetic flowmeter Download PDFInfo
- Publication number
- CN205879265U CN205879265U CN201620795290.8U CN201620795290U CN205879265U CN 205879265 U CN205879265 U CN 205879265U CN 201620795290 U CN201620795290 U CN 201620795290U CN 205879265 U CN205879265 U CN 205879265U
- Authority
- CN
- China
- Prior art keywords
- ground loop
- electromagnetic flowmeter
- ground
- liquid electrode
- medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 11
- 150000001336 alkenes Chemical class 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 4
- 231100000078 corrosive Toxicity 0.000 abstract description 3
- 231100001010 corrosive Toxicity 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 abstract description 2
- 229950000845 Politef Drugs 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910000575 Ir alloy Inorganic materials 0.000 description 1
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910000856 hastalloy Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
Abstract
The utility model discloses an electromagnetic flowmeter, including the sensor and rather than the converter that links to each other, the both sides limit of converter still links respectively has the medium pipeline, and the medium pipeline is equipped with on all and connects the liquid electrode, even have the ground loop on connecing the liquid electrode, the ground loop is corrosion -resistant material, still links the earth conductor who has for ground loop ground connection on the side of ground loop. The utility model discloses can solve the ground connection problem of electromagnetic flowmeter in strong corrosive medium occasion effectively.
Description
Technical field
This utility model relates to Ferraris instrument, more particularly, it relates to a kind of electromagnetic flowmeter.
Background technology
Electromagnetic flowmeter is a kind of based on Faraday law of electromagnetic induction, the sense produced by conductor fluid cutting magnetic line
Answer electromotive force to measure the average speed in cross section, then according to bore (fixed value) and flow velocity, be converted into the sensing of volume flow
Formula instrument.
Conventional electromagnetic flowmeter is typically all made up of sensor and the big parts of transducer two, and during measurement, transducer is responsible for
Thering is provided the exciting current needed to sensor, after sensor excitation coil energising, produce magnetic field, conducting medium is at sensor tube
In when flow through, do the motion of cutting magnetic line and output induction electromotive force, the induction electromotive force of generation is by sensor
Two electrode detection out, feed back to transducer.
The transducer of electromagnetic flowmeter needs have the strongest anti-common mode disturbances ability, and the electrode detection on transducer is out
Induction electromotive force, the amplifier being input to transducer is differential In-put design, then one of them public reference ground is must
Need, this " " must be connected with the ground of signal source.For electromagnetic flowmeter, it is simply that touch medium, fill suitably
Liquid-contacting part just can be reliably, stably using the signal of the conducting liquid datum mark as differential flow signal with transducer
Couple together, keep measuring basis and the same current potential of measured medium.Thus ensure the normal work of instrument.
Medium is in pipeline, if process pipe is to be made from a material that be electrically non-conductive, or metallic conduit but there is insulation inside
Lining, it is exactly required for now stretching into the ground loop that pipe interior contacts with medium, as it is shown in figure 1, traditional ground loop is whole
Body material carries out connecing liquid and forming stable datum mark.
But the medium of measuring of the most this occasion has the strongest corrosivity, connect liquid material must be Hastelloy, tantalum,
The precious metals such as platinum/iridium alloy, use traditional ground loop to be usually associated with high cost.
Utility model content
For drawbacks described above present in prior art, the purpose of this utility model is to provide a kind of electromagnetic flowmeter, energy
Enough efficiently solve the electromagnetic flowmeter problem with grounding in strong corrosive medium occasion.
For achieving the above object, this utility model adopts the following technical scheme that
A kind of electromagnetic flowmeter, including sensor and coupled transducer, the dual-side of transducer connects the most respectively
Having medium pipeline, medium pipeline is all provided with and connects liquid electrode, described in connect and on liquid electrode, be connected with ground loop, ground loop is corrosion-resistant material
Material, the side of ground loop is also connected with the earth lead in order to ground loop ground connection.
Described resistant material is politef.
Described earth lead is connected on ground loop by securing member.
The described liquid electrode that connects is inserted in ground loop, and is connected with ground loop.
Described ground loop is located at one and is connect on liquid electrode.
Comprehensive above technical scheme, ground loop of the present utility model uses polytetrafluoroethylmaterial material to make, can be significantly
Cost-effective, and by the way of earth lead is drawn, complete ground connection, form stable datum mark with this, it is possible to have
Effect ground solves the electromagnetic flowmeter problem with grounding in strong corrosive medium occasion.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing ground loop；
Fig. 2 is the schematic diagram of this utility model structure；
Fig. 3 is the schematic diagram that this utility model is arranged on scene.
Detailed description of the invention
The technical solution of the utility model is further illustrated below in conjunction with the accompanying drawings with embodiment.
Incorporated by reference to shown in Fig. 2 to Fig. 3, a kind of electromagnetic flowmeter provided by the utility model, including sensor 1 and with
Its transducer 2 being connected, the dual-side of transducer 2 is connected with medium pipeline 3 the most respectively, and medium pipeline 3 is all provided with and connects liquid electrode
4, above-mentioned part is prior art, just repeats no more at this.Unlike the prior art, connect described in be connected with on liquid electrode 4 and connect
Ground ring 5, ground loop 5 is resistant material, so can be the most cost-effective, and solves electromagnetic flowmeter in deep-etching
The problem with grounding of medium occasion.The earth lead 6 in order to ground loop 5 ground connection, earth lead 6 also it is connected with on the side of ground loop 5
It is connected on ground loop 5 by securing member 7, by the way of earth lead 6 is drawn, completes ground connection, form stable measurement with this
Datum mark.
It is also preferred that the left described resistant material is politef, the corrosion-resistant specially good effect of politef almost can be resistance to
The corrosion of all of conducting liquid, is therefore as preferably selecting.
It is also preferred that the left the described liquid electrode 4 that connects is inserted in ground loop 5, and it is connected with ground loop 5 so that connect liquid electrode 4 He
An entirety is formed between ground loop 5.
Connect on liquid electrode 4 it is also preferred that the left described ground loop 5 is located at one, so make the medium of the dual-side of transducer 2
Pipeline 3 is respectively adopted two kinds of different structures (being while using traditional structure, another side uses this utility model), is all
Ground loop 5 is contacted with liquid, can reliably, stably using conducting liquid as the datum mark of differential flow signals and conversion
The signal of device couples together, and keeps measuring basis and the same current potential of measured medium, thus ensures the normal work of instrument.
Those of ordinary skill in the art is it should be appreciated that above embodiment is intended merely to illustrate that this practicality is new
Type, and it is not used as to restriction of the present utility model, as long as in spirit of the present utility model, to the above
The change of embodiment, modification all will fall in Claims scope of the present utility model.
Claims (5)
1. an electromagnetic flowmeter, including sensor and coupled transducer, the dual-side of transducer is connected with the most respectively
Medium pipeline, medium pipeline is all provided with and connects liquid electrode, it is characterised in that connects described in: and is connected with ground loop, ground loop on liquid electrode
For resistant material, the side of ground loop is also connected with the earth lead in order to ground loop ground connection.
2. a kind of electromagnetic flowmeter as claimed in claim 1, it is characterised in that described resistant material is polytetrafluoroethyl-ne
Alkene.
3. a kind of electromagnetic flowmeter as claimed in claim 1, it is characterised in that described earth lead is connected in by securing member
On ground loop.
4. a kind of electromagnetic flowmeter as claimed in claim 1, it is characterised in that the described liquid electrode that connects is inserted in ground loop
In, and be connected with ground loop.
5. a kind of electromagnetic flowmeter as claimed in claim 1, it is characterised in that described ground loop is located at and is connect liquid electrode
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620795290.8U CN205879265U (en) | 2016-07-27 | 2016-07-27 | Electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620795290.8U CN205879265U (en) | 2016-07-27 | 2016-07-27 | Electromagnetic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205879265U true CN205879265U (en) | 2017-01-11 |
Family
ID=57700422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620795290.8U Active CN205879265U (en) | 2016-07-27 | 2016-07-27 | Electromagnetic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205879265U (en) |
-
2016
- 2016-07-27 CN CN201620795290.8U patent/CN205879265U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102279316B (en) | Sensor for measuring resistivity of natural gas hydrate in porous medium | |
| JP2009258125A (en) | Magnetically induced flow measurement gauge for fluid and method of magnetically induced flow measurement | |
| CN208223539U (en) | A kind of optical fiber conductance integration probe sensor | |
| CN105223413B (en) | A kind of marine ship seawater pipeline stray current detecting device | |
| CN101566491B (en) | Method and system for measuring liquid level of conductive liquid | |
| CN100375891C (en) | Electromagnetic flow sensor for measuring non-full pipe flow and method for measurement | |
| CN104807511B (en) | A kind of pipeline flowmeter | |
| CN104061969A (en) | Capacitive electromagnetic flow signal converter | |
| JP2002328052A5 (en) | ||
| US9200933B2 (en) | Magneto-inductive flowmeter having a functional unit with a request initiator activated by a user or the flowmeter | |
| CN205879265U (en) | Electromagnetic flowmeter | |
| CN202974352U (en) | Plug-in type electromagnetic flowmeter | |
| CN104019860A (en) | Flowmeter integrating electromagnetism and ultrasonic and use method of flowmeter | |
| CN2911613Y (en) | Six-electrode electromagnetic flowmeter | |
| CN104458108B (en) | Method for measuring pressure drop of liquid metal pipe flow magnetic fluid under high-intensity magnetic field | |
| CN110470353B (en) | Electromagnetic flow measuring device based on correlation algorithm | |
| CN202204545U (en) | Electromagnetic flowmeter | |
| CN101865712A (en) | Novel electromagnetic flowmeter | |
| CN201653472U (en) | Electromagnetic flowmeter | |
| CN109459099A (en) | A kind of electrode structure and flowmeter improving electromagnetic flowmeter survey performance | |
| CN203657868U (en) | Electromagnetic and ultrasonic integrated-design flow meter | |
| RU127905U1 (en) | FLUID METER FLOW METER | |
| CN105301365B (en) | The anti-measuring device of contactless fluid resistance and method | |
| CN103616057A (en) | Method and device for measuring level of water in non-metal container or pipeline | |
| CN213274390U (en) | Electromagnetic flowmeter for measuring non-full pipe of sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |