CN201531264U - Novel turbine flow transducer - Google Patents
Novel turbine flow transducer Download PDFInfo
- Publication number
- CN201531264U CN201531264U CN200920245447XU CN200920245447U CN201531264U CN 201531264 U CN201531264 U CN 201531264U CN 200920245447X U CN200920245447X U CN 200920245447XU CN 200920245447 U CN200920245447 U CN 200920245447U CN 201531264 U CN201531264 U CN 201531264U
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- CN
- China
- Prior art keywords
- turbine
- flow transducer
- turbine flow
- coils
- sensor
- 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 provides a novel turbine flow transducer. Two electromagnetic double receiving coils are arranged above an annular magnet and arranged vertically with a difference of 135 DEG, each of the electromagnetic double receiving coils has no coil framework and is wound on an iron core by a high-temperature enamelled wire. The turbine flow transducer has the advantages of simple structure, good temperature property (working temperature of 250 DEG C), high measured precision, large measured dynamic range, long service life, low cost and convenient repairing and maintenance.
Description
Technical field
The utility model relates to a kind of sensor of underground survey flow, particularly relates to the turbine sensor of the novel turbine flowmeter in a kind of down-hole.
Background technology
In petroleum geology production logging field, the flow of measuring underground oil-water is very important very general work.For a bite oil well, estimate the good job of oil well, the output of oil is most important index.Turbine flowmeter is exactly effective instrument of measuring the oil well oil production rate.And turbine sensor is the part of the core of turbine flowmeter instrument.As shown in Figure 1, conventional turbine flow transducer is to rely on flowing of detected fluid, drives turbine 6 and 5 rotations of the annular magnet above the turbine, and the synchronous magnet 4 that annular magnet 5 drives sensor internal again rotates.Also rotate synchronously with 90 ° the shadow shield 3 of being of synchronous magnet one, shadow shield is placed two pairs of emissions up and down and is received photodiodes 7.When turbine rotation, photodiode will output phase differs 90 ° two row square waves.Instrument is judged the flow of fluid again by the counting of square-wave pulse, and judges the flow direction of fluid by the phase place of two row square-wave pulses.The shortcoming of its maximum is (1) frame for movement and kind of drive complexity.(2) annular magnet 5 and magnet 4 requirements synchronously to sensor must have certain magnetic field intensity, to guarantee that two magnet rings can rotate synchronously, but magnetic field intensity again can not be too strong, otherwise cut with regard to iron in the easy absorption well and influence the turbine normal rotation, the magnetic field intensity of magnet ring too a little less than, the synchronous difference in rotation of outer magnetic ring and produce measure error in will causing.(3) application life of photodiode 7 limited, in order to increase application life, instrument has designed a square wave power supply 2 for photodiode specially.(4) when the detected fluid flow velocity was too fast, interior outer magnetic ring also can produce synchronous rotation error, and the upper limit of apparatus measures scope is restricted.(5) in order to reduce photoelectricity assembly 1 pivoting friction, bearing portions must adopt the jewel bearing 9 of expensive price, has improved instrument cost.
Summary of the invention
The utility model has overcome the defective of prior art, and a kind of novel turbine flow transducer is provided, and is simple in structure, good temp characteristic (operating temperature is 250 ℃), and the certainty of measurement height, it is big to measure dynamic range, long service life, cost is low and maintenance is convenient.
The technical solution of the utility model is: a kind of novel turbine flow transducer, it is characterized in that above annular magnet, two electromagnetism double reception coils are installed, two electromagnetism double reception coils are vertical and differ 135 ° of placements, two electromagnetism double reception coils do not have coil rack, by the high temperature lacquer envelope curve on iron core.
The pulse power that the utility model only replaces whole photoelectricity assembly and photoelectricity assembly to use with the double reception coil.Make turbine flow transducer save the baroque electric assembly and the pulse power, the cost of sensor not only can reduce more than 60%, and the certainty of measurement of instrument and tactful scope also improve a lot.Replace the output waveform of the new sensor in back identical with original photoelectricity assembly output waveform, like this, turbine flow instrument turbine sensor originally just can substitute with novel pair of electromagnetic coil sensor easily, not only can realize the function of former turbine sensor, and have that simple in structure, flexible movements, measurement are highly sensitive, long service life and low cost and other advantages.
Description of drawings
Fig. 1 is former turbine sensor structural representation.
Fig. 2 is the utility model structural representation.
Fig. 3 is the utility model sensor receiving coil structural representation.
Fig. 4 is that the position of double reception coil in magnetic field concerns schematic diagram.
Fig. 5 is an output waveform figure before the shaping.
Fig. 6 is an output waveform figure after the shaping.
The specific embodiment
As shown in Figure 2, the utility model has designed an electromagnetism double reception coil 8 (L1L2) according to electromagnetic principle, and this coil 8 is placed on the top of annular magnet 5, and two coils are 135 ° of vertical placements.Two coil same polarity outputs.When annular magnet 5 and turbine 6 are just changeing, 90 ° of the leading coil L2 of coil L1 output waveform phase place output waveforms, when annular magnet 5 and turbine 6 counter-rotatings, 90 ° of the leading coil L1 of coil L2 output waveform phase place output waveforms.Sensor utilizes the phase difference of two coils to differentiate the turbine rotation direction.
As shown in Figure 3, on the 1J79 iron core 10 of 3X2, winding volume is: 6X4X2mm by No. 47 (diameter 0.05) high temperature lacquer envelope curves for double reception coil L1 and L2
3, two coils vertically are placed in the magnetic field by 135 °.As shown in Figure 4.When external magnetic field is rotated with turbine 6, two coils produce two sinusoidal induced voltage V1 of row and V2 of 90 ° of phase phasic differences, before the shaping output waveform as shown in Figure 5, after the shaping output waveform as shown in Figure 6, adopting the purpose of two magnetic test coils is the flow directions that are used for judging measured medium.
The utility model is based on electromagnetic induction principle, and the frequency of employing rotating excitation field voltage waveform on two coils detects the size of rate-of flow, detects the direction of media flow with the phase difference of voltage waveform on two coils.Because when turbine 6 rotated with media flow with magnet ring, the magnet ring that no longer needs to drive photoelectricity assembly 1 rotated, so the resistance of turbine rotation reduces, the sensitivity of turbine rotation has improved.
Claims (1)
1. electromagnet turbine flow transducer, it is characterized in that in annular magnet (5) top, two electromagnetism double reception coils (8) are installed, two electromagnetism double reception coils (8) are vertical and differ 135 ° of placements, the no coil rack of two electromagnetism double reception coils (8), by the high temperature lacquer envelope curve on unshakable in one's determination (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920245447XU CN201531264U (en) | 2009-11-25 | 2009-11-25 | Novel turbine flow transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920245447XU CN201531264U (en) | 2009-11-25 | 2009-11-25 | Novel turbine flow transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531264U true CN201531264U (en) | 2010-07-21 |
Family
ID=42526668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920245447XU Expired - Fee Related CN201531264U (en) | 2009-11-25 | 2009-11-25 | Novel turbine flow transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531264U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784015A (en) * | 2016-03-15 | 2016-07-20 | 天信仪表集团有限公司 | Gas turbine flowmeter |
-
2009
- 2009-11-25 CN CN200920245447XU patent/CN201531264U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784015A (en) * | 2016-03-15 | 2016-07-20 | 天信仪表集团有限公司 | Gas turbine flowmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20171125 |