CN2291642Y - Ionic current calibrating device of electromagnetic flowmeter - Google Patents
Ionic current calibrating device of electromagnetic flowmeter Download PDFInfo
- Publication number
- CN2291642Y CN2291642Y CN 96230109 CN96230109U CN2291642Y CN 2291642 Y CN2291642 Y CN 2291642Y CN 96230109 CN96230109 CN 96230109 CN 96230109 U CN96230109 U CN 96230109U CN 2291642 Y CN2291642 Y CN 2291642Y
- Authority
- CN
- China
- Prior art keywords
- liquid
- electromagnetic flowmeter
- galvanic electrode
- flow
- upper connecting
- 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.)
- Expired - Fee Related
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Abstract
The utility model is composed of a lower tube socket 2, an upper joint pipe 5, liquid 6, a lower current electrode 1, an upper current electrode 7, a control supply 9, an amperemeter 10, a calibrating processor 3, a sensor 8 calibrated with an electromagnetic flowmeter and a signal converter 4. The device does not need to flow the liquid, and the ion current in stationary liquid is used for substituting for the flow rate of the real liquid. The electromagnetic flowmeter can be calibrated by the ion current value. Because the device does not need to flow the liquid and the device does not need equipment and energy consumption for metering the liquid flow rate, the accurate calibration of the electromagnetic flowmeter with any caliber can be realized under low investments.
Description
The utility model relates to a kind of caliberating device of electromagnetic flowmeter.The caliberating device of the ionic current method of the immobilising electromagnetic flowmeter of particularly a kind of liquid.
The caliberating device of electromagnetic flowmeter has two kinds now: the one, and the flowrate calibrating device of metering liquid traffic flow is demarcated.The flow of liquid that promptly produces an actual flow is crossed electromagnet flow meter sensor, and the flow value that flows through with the standard measuring device meter fluid comes electromagnetic flowmeter is demarcated.Obviously, when the bore of electromagnetic flowmeter is big more, it is just big more to produce investment, place and energy consumption that equipment, the energy and standard metering measuring device that the heavy caliber fluid flows need.And be difficult to reach the calibration request of big flow range; The 2nd, by the measured value that measuring tube bore and internal magnetic field are distributed, come device that electromagnetic flowmeter is demarcated with the method for Theoretical Calculation again.Because non-uniform magnetic-field and actual hydraulics bore all are difficult to accurate measurement in the measuring tube, so this being called done Calibration Method and device thereof and be difficult to guarantee the accuracy of demarcating.
The purpose of this utility model provides a kind of ionic current method caliberating device of electromagnetic flowmeter.It is exactly the caliberating device that comes equivalent real fluid to flow with gas current in the liquid.Promptly the ionic current values behind the inactive liquid energize is come device that electromagnetic flowmeter is demarcated.
The utility model is achieved in that the liquid of filling known unit sectional area ion mobility in the measuring tube of electromagnetic flowmeter, be the liquid of ion flow velocity under the known unit ion current density, the control power supply (voltage source or current source) of controllable size and direction on the axial two ends of measuring tube lead to.Be equivalent to the actual flow of measuring liquid in pipe by flowing of ion in this control power supply controlling liquid.Because the ion flow flow value of measuring liquid in pipe is reflected in the current value of the liquid of flowing through, the promptly available current value that this can accurately be measured comes electromagnetic flowmeter is demarcated exactly.
Fig. 1 is the structural representation according to the ionic current method caliberating device of the electromagnetic flowmeter that the utility model proposes.
Describe structural principle of the present utility model and two in detail below in conjunction with Fig. 1 and make situation.
The utility model is by the bottom nozzle 2 of tube wall insulation, the upper connecting tube 5 of tube wall insulation, the liquid 6 of ion constant of speed of flow under the known unit ion current density, following galvanic electrode 1, last galvanic electrode 7 control power supplys 9, to the galvanometer 10 that gas current is measured, demarcate processor 3 and constituted by the sensor 8 and the signal converter 4 of demarcation electromagnetic flowmeter.Sensor 8 is fixed between bottom nozzle 2 and the upper connecting tube 5.Fill liquid 6 issuing on seat 2 upper connecting tubes 5 space between galvanic electrode 7 and the following galvanic electrode 1, following galvanic electrode 1 insulation is fixed on the bottom of bottom nozzle 2, last electric current electrodeposit 7 insulation are fixed on the top of upper connecting tube 5, and all immerse in the liquid 6, control power supply 9 and 4 electric connections of signal converter, and control S1 or S2 is closed and S2 or S1 open by the change of the excited signal M direction of signal converter 4 output, so that the connected mode of gas current 1 direction of the liquid of flowing through change.Control power supply 9 and 10 electric connections of galvanometer, the size of the ion power supply of the liquid 6 of flowing through is being controlled in the output of control power supply 9, just is equivalent to the size of actual liquid flow.Galvanometer 10 is measured the flow through current value 1 of liquid 6 of control circuit 9.Galvanometer 10 handled for 10 electric connections with demarcation, demarcate 3 pairs of ionic current values 1 of processor and give processing, promptly carry out behind the ionic current values 1 multiplication by constants C divided by the pipe of being demarcated electromagnetic flowmeter through sectional area S, subtract each other with the indicated value V that is demarcated electromagnetic flowmeter more later on and obtain difference E.Difference E is exactly the normal data to the magnetic flowmeter of being demarcated.As long as, just can accurately demarcate to the magnetic flowmeter of any bore so obtain accurate constant C and ionic current values 1.
Claims (1)
1, a kind of by bottom nozzle 2, upper connecting tube 5, liquid 6, following galvanic electrode 1, last galvanic electrode 7, control power supply 9, galvanometer 10 is demarcated processor 3 and is demarcated the sensor 8 of electromagnetic flowmeter and the ionic current method caliberating device of the electromagnetic flowmeter that signal converter 4 is constituted, and it is characterized in that:
A. sensor 8 is fixed between bottom nozzle 2 and the upper connecting tube 5.
B, at bottom nozzle 2, upper connecting tube 5, last galvanic electrode 7, following galvanic electrode 1 the space in fill liquid 6.
C. descend galvanic electrode 1 insulation to be fixed on the bottom of bottom nozzle 2.
D. go up galvanic electrode 7 insulation and be fixed on the top of upper connecting tube 5, and all immerse in the liquid 6.
E. control power supply 9 and 4 electric connections of signal converter.And control S1 or S2 is closed and S2 or S1 open by the change of the excited signal M direction of signal converter output, so that the connected mode of gas current 1 direction of the liquid 6 of flowing through change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96230109 CN2291642Y (en) | 1996-06-21 | 1996-06-21 | Ionic current calibrating device of electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96230109 CN2291642Y (en) | 1996-06-21 | 1996-06-21 | Ionic current calibrating device of electromagnetic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2291642Y true CN2291642Y (en) | 1998-09-16 |
Family
ID=33907609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96230109 Expired - Fee Related CN2291642Y (en) | 1996-06-21 | 1996-06-21 | Ionic current calibrating device of electromagnetic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2291642Y (en) |
-
1996
- 1996-06-21 CN CN 96230109 patent/CN2291642Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |