CN1712907A - Turbine electromagnetic flowmeter with low starting output volume - Google Patents
Turbine electromagnetic flowmeter with low starting output volume Download PDFInfo
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- CN1712907A CN1712907A CN 200510016958 CN200510016958A CN1712907A CN 1712907 A CN1712907 A CN 1712907A CN 200510016958 CN200510016958 CN 200510016958 CN 200510016958 A CN200510016958 A CN 200510016958A CN 1712907 A CN1712907 A CN 1712907A
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- turboshaft
- copper core
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- electromagnetic flowmeter
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Abstract
An electromagnetic flow-meter of turbine in low starting up output volume is composed of turbine shaft, turbine, permanent magnet, cylinder shell, ring collector, flow guiding cone and amorphous alloy transducer which formed by copper core, amorphous belt, coil as one end connected to copper core and another end connected to input end signal lead - out wire and signal reshaping circuit, thin wall copper tube and reshaping circuit for converting pulse electric signal to be square wave electric signal .
Description
Technical field
The invention belongs to the metering field of volumetric flow rate, particularly a kind of turbine meter with the non-crystaline amorphous metal sensor.
Background technology
Turbo flow meter is the volumetric flow rate pick-up unit of widespread use in the industrial and agricultural production, is one of measuring method that generally adopts in the petroleum industry production run.Its cardinal principle is that turbine is installed in the flow space of fluid, utilizes fluid acting force to turbo blade in flow process to make turbine rotation, comes the flow of Fluid Computation by the measurement to the turbine rotation number of turns or revolution.
The method of measuring the turbine rotation number of turns or revolution is a lot, and inductive electromagnetic method is one of them.
The turbo flow meter of the prior art close with structure of the present invention is installed in turbine on the turboshaft and permanent magnet, is constituted at the collector ring and deflection cone, coil, the shell that are provided with respectively up and down of turbine by turboshaft, coaxial cable.Concrete can be referring to Fig. 1.When fluid when the axial flow of turboshaft 9 is crossed turbine 3, turbine 3 rotates and drives permanent magnets 10 rotations, produces induced voltage by electromagnetic induction in coil 5.The revolution that records turbine by the number of induced voltage pulse is measured the size of fluid flow indirectly, and the rotating speed of the size of induced voltage pulse and turbine 3 is closely related.Collector ring and deflection cone do not draw among Fig. 1.
Because the ultimate principle that the turbo flow meter of prior art utilizes inductive electromagnetic method to measure the turbine rotation number of turns or revolution is a dynamo method, and that the weakness of this method is the induced voltage amplitude is relevant with the speed of turbine rotation, moreover the electromagnetic damping between rotor and the stator is also very big, and these all produce very big influence to the measurement range and the startup discharge capacity of flow.Along with oil-field development enter late period, the exploitation of low pay sand seems more and more important, and is correspondingly also just imperative to the measurement of low discharge.And the turbo flow meter that generally adopts in the oil field can't satisfy the demand to low liquids withdrawal point flow measurement for above-mentioned reasons.Because the rugged surroundings of down-hole, oil field also make this device be restricted.
Summary of the invention
The present invention will solve the low discharge under the rugged surroundings of high temperature (125C °), high pressure (30Mp) of prior art just and hang down problems of measurement such as starting flow, makes flowmeter of the present invention be applicable to the multiple fluid situation of high-temperature, High Voltage, small size space and low discharge.
Turbine electromagnetic flowmeter with low starting output volume of the present invention is a kind of fluid flow turbine electromagnetic measurement device, and this device is used for measuring fluid flow by the permanent magnet that is installed on the turbine with the gloomy effect pulse producer of big Bark milli.The gloomy effect pulse producer of big Bark milli is exactly a core texture of the present invention---the non-crystaline amorphous metal sensor.
Turbine electromagnetic flowmeter with low starting output volume of the present invention, by turboshaft, coaxial cable be installed in turbine on the turboshaft and permanent magnet, coaxial cable barrel shrond, turbine be respectively arranged with collector ring up and down and deflection cone constitutes; It is characterized in that it constitutes non-crystaline amorphous metal sensor in addition; Said non-crystaline amorphous metal sensor by the copper core, be fixed on amorphous ribbon on the copper core, be wrapped in the coil in the amorphous ribbon outside, thin-wall copper pipe and the signal transformation circuit that is enclosed in the coil outside constitutes; The non-crystaline amorphous metal sensor is installed in the enclosure the permanent magnet next door, and the end by the copper core is fixed on the shell; One end and the copper core of coil electrically connect, and the other end electrically connects with the input end of making signal extension line and signal transformation circuit.
The signal transformation circuit here is the common electronic circuit that pulse electrical signal is converted to the square wave electric signal.
Turbine electromagnetic flowmeter of the present invention, the permanent magnet that is installed on the turboshaft produces certain magnetic field in the flow space; When turbine rotation, on a certain direction in flow space, produce the magnetic field of an alternate; The non-crystaline amorphous metal sensor is under the effect of the variation magnetic field on a certain direction in flow space, export the voltage pulse signal relevant with changes of magnetic field, through the square wave electric signal that signal transformation circuit converts to, do numeration, computing by computing machine, just can obtain tested flow value.
The size in the inclination angle of turbo blade and turbine diameter and flow space can be adjusted in certain scope, makes turbine electromagnetic flowmeter of the present invention be fit to the measurement of various heterogeneity liquid, different flow.Turbine is made with duralumin in the present invention, and the inclination angle scope of blade is between 35 °～45 °, can select to install the turbine of various different angle according to fluid of different nature (water, oil water mixture etc.).
The permanent magnet that studs with on the turboshaft, its surface induction intensity is preferably 100～500Oe.Permanent magnetism physical efficiency and turbine rotate the generation rotating magnetic field synchronously.Relative position between suitable permanent magnet and the non-crystaline amorphous metal sensor can make the non-crystaline amorphous metal normal operation of sensor and sensitivity can improve greatly.
Turboshaft can be for the magnetism-free stainless steel material, and bearing can be made with awl hole jewel in the turboshaft two ends.Adopt adjustable structure, for convenience detach and adjusting.
Whole flowmeter is made shell with magnetism-free stainless steel.
As the non-crystaline amorphous metal sensor of the rotation-speed measuring device of turbine, be actually the gloomy effect pulse producer of a kind of big Bark milli, be characterized in: (1) can operate as normal under rugged surroundings such as high temperature, high pressure; (2) pulse height and changes of magnetic field speed irrelevant (promptly irrelevant) with the rotating speed of turbine, and only whether to reach the threshold value of magnetic flux reversals relevant with magnetic field.Just because of above characteristics, this flowmeter can be measured the flow of low discharge and low starting output volume under rugged surroundings.
Turbine electromagnetic flowmeter of the present invention is fit to the measurement of low startup, low discharge, such as the measurement of the low discharge capacity zonal flow rate in petroleum industry down-hole.Need not to add any source forcing that has, can measure fluid flow under the effect of variation magnetic field by the potential pulse that the gloomy effect pulse producer of the big Bark milli of numeration non-crystaline amorphous metal produces.Especially under rugged surroundings under the image-stone oil well, its advantage is just more outstanding.Turbine electromagnetic flowmeter of the present invention is widely used in the volume flow measurement of industrial or agricultural liquid or gas.
Description of drawings
The turbo flow meter structural representation of Fig. 1 prior art.
Fig. 2 is a structural profile synoptic diagram of the present invention.
Fig. 3 is the A-A face view of Fig. 2.
Embodiment
Specify structure of the present invention below in conjunction with accompanying drawing.
Among Fig. 2,1 is shell, can be cylindrical shape non-magnetic rustproof steel; 2 are awl hole jewel bearing; 3 is turbine; 4 is amorphous ribbon; 5 is coil; 6 is thin-wall copper pipe; 7 is the copper core; 8 is the signal extension line; 9 is turboshaft, and there is awl hole jewel bearing 2 at two ends, and turbine 3 and permanent magnet 10 are equipped with in the centre of turboshaft 9; 11 is the non-crystaline amorphous metal sensor.
Turboshaft 9, turbine 3, permanent magnet 10, barrel shrond 1 coaxial cable are installed; About turbine 3, collector ring and deflection cone (not drawing among the figure) can be set respectively; Said non-crystaline amorphous metal sensor 11 by copper core 7, be fixed on amorphous ribbon 4 on the copper core, be wrapped in the coil 5 in the amorphous ribbon outside, thin-wall copper pipe 6 and the signal transformation circuit that is enclosed in coil 5 outsides constitutes; Do not draw among the signal transformation circuit figure.Copper core 7 plays a part bracing frame, support amorphous ribbon 4 on the one hand, on the other hand with copper core 7 with being fixed on the shell 1 of non-crystaline amorphous metal sensor 11 integral body, just shown the curved button that turn 90 degrees in copper core 7 lower ends among Fig. 1 tightly on the termination of shell 1, thereby fixed non-crystaline amorphous metal sensor 11.One end of coil 5 and copper core 7 electrically connect and connect the shell ground wire, and the other end electrically connects with the input end of making signal extension line 8 and signal transformation circuit.
In the non-crystaline amorphous metal sensor 11, can select wide 1～2mm, the amorphous ribbon 4 of the FeBSiC material of long 40～50mm; Thread 400～600 circle coils 5 of enamel-cover can be wound with on the amorphous ribbon 4, the enameled wire of φ 0.03 can be used; Amorphous ribbon 4 and 6 shieldings of coil 5 usefulness thin-wall copper pipes are wrapped up, and make the signal extension line 8 of coil 5 with high temperature resistant colloid line.
The concrete structure on embodiment 2 scalable turboshaft positions of the present invention and shell top
Turboshaft 9 adopts adjustable structures, has regulated the position of turbine 3 simultaneously, and then regulates the position relation between permanent magnet 10 and the non-crystaline amorphous metal sensor 11, makes turbine electromagnetic flowmeter operate as normal of the present invention and sensitivity can improve greatly.
The push rod 12 that is installed in turboshaft 9 two ends among adjustable structure such as Fig. 1.The termination in shell 1 outside of push rod 12 has groove 15, is used for turn push rod 12; Push rod 12 joins with turboshaft 9 coaxial cables by awl hole jewel bearing 2 in the termination of shell 1 the inside; Tops with shell 1 in the middle of the push rod 12 join with rib-loop 14, make the push rod 12 can spinning in and out.Adjust and to make the stationkeeping of turboshaft 9, permanent magnet 10 and non-crystaline amorphous metal sensor 11 with clamping screw 13 locking after suitable.
Fig. 3 provides shell apex structure synoptic diagram.Wherein, 13 clamping screws, 15 is groove, 16 is the spoke frame.The two ends of shell 1 connect with spoke frame 16.Groove 15 promptly is a termination of push rod 12, and top stalk 12 passes the axis hole of the symcenter of spoke frame 16.Shell 1 top do not seal, so the shell top is exactly the import and export of detected fluid owing to be the spoke shelf structure.
Embodiment 3 principle of work of the present invention
Acting on when the fluid that flows on the blade of turbine 3 rotates turbine 3, permanent-magnet steel 10 is also along with turbine 3 rotates synchronously, thereby make and produce big barkhausen in the amorphous ribbon 4, suitable positive and negative two potential pulses of generation amplitude in coil 5 so turbine 3 whenever circles, when turbine 3 rotational frequencies when 2c/s is above, output signal can maintain 50mv and keep stable, and this signal is received electronic circuit through signal extension line 8, can deliver to frequency instrumentation revolution again after suitable amplification filtering is handled.
Claims (3)
1, a kind of turbine electromagnetic flowmeter with low starting output volume, by turboshaft (9), coaxial cable be installed in turbine (3) on the turboshaft (9) and permanent magnet (10), coaxial cable barrel shrond (1), constitute at the collector ring that is provided with respectively up and down and the deflection cone of turbine (9); It is characterized in that it constitutes non-crystaline amorphous metal sensor (11) in addition; Said non-crystaline amorphous metal sensor (11) by copper core (7), be fixed on amorphous ribbon (4) on the copper core (7), be wrapped in amorphous ribbon (4) outside coil (5), be enclosed in the thin-wall copper pipe (6) in coil (5) outside and the signal transformation circuit that pulse electrical signal is converted to the square wave electric signal constituted; Non-crystaline amorphous metal sensor (11) is installed in the interior permanent magnet of shell (1) (10) next door, and the end by copper core (7) is fixed on the shell (1); One end of coil (5) and copper core (7) electrically connect, and the other end electrically connects with the input end of making signal extension line (8) and signal transformation circuit.
According to the described turbine electromagnetic flowmeter with low starting output volume of claim 1, it is characterized in that 2, said turboshaft (9) is the non-magnetic rustproof steel, bearing is made with awl hole jewel in turboshaft (9) two ends; Said permanent magnet (10), surface induction intensity are 100～500Oe.
According to claim 1 or 2 described turbine electromagnetic flowmeter with low starting output volume, it is characterized in that 3, said amorphous ribbon (4) is wide 1～2mm, the FeBSiC material of long 40～50mm; Be wound with thread 400～600 circle coils (5) of enamel-cover on the amorphous ribbon (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510016958 CN1712907A (en) | 2005-07-13 | 2005-07-13 | Turbine electromagnetic flowmeter with low starting output volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510016958 CN1712907A (en) | 2005-07-13 | 2005-07-13 | Turbine electromagnetic flowmeter with low starting output volume |
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| Publication Number | Publication Date |
|---|---|
| CN1712907A true CN1712907A (en) | 2005-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510016958 Pending CN1712907A (en) | 2005-07-13 | 2005-07-13 | Turbine electromagnetic flowmeter with low starting output volume |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424473C (en) * | 2006-11-07 | 2008-10-08 | 华南理工大学 | Amorphous alloy flow sensor |
| CN104568032A (en) * | 2015-01-23 | 2015-04-29 | 北京奥特美克科技股份有限公司 | Magneto-electrical flow meter |
| CN107923776A (en) * | 2015-07-28 | 2018-04-17 | 森泰克有限公司 | Electromagnetic flow sensor |
-
2005
- 2005-07-13 CN CN 200510016958 patent/CN1712907A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100424473C (en) * | 2006-11-07 | 2008-10-08 | 华南理工大学 | Amorphous alloy flow sensor |
| CN104568032A (en) * | 2015-01-23 | 2015-04-29 | 北京奥特美克科技股份有限公司 | Magneto-electrical flow meter |
| CN104568032B (en) * | 2015-01-23 | 2018-08-28 | 北京奥特美克科技股份有限公司 | A kind of magnetoelectric flowmeter |
| CN107923776A (en) * | 2015-07-28 | 2018-04-17 | 森泰克有限公司 | Electromagnetic flow sensor |
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