CN107063361A - A kind of fluid flowmeter - Google Patents

A kind of fluid flowmeter Download PDF

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Publication number
CN107063361A
CN107063361A CN201710198309.XA CN201710198309A CN107063361A CN 107063361 A CN107063361 A CN 107063361A CN 201710198309 A CN201710198309 A CN 201710198309A CN 107063361 A CN107063361 A CN 107063361A
Authority
CN
China
Prior art keywords
impeller
placing chamber
lid
impeller placing
conduit
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.)
Pending
Application number
CN201710198309.XA
Other languages
Chinese (zh)
Inventor
马峻
孙建明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Yasike Precision Numerical Control Co Ltd
Original Assignee
Suzhou Yasike Precision Numerical Control Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Yasike Precision Numerical Control Co Ltd filed Critical Suzhou Yasike Precision Numerical Control Co Ltd
Priority to CN201710198309.XA priority Critical patent/CN107063361A/en
Publication of CN107063361A publication Critical patent/CN107063361A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/05Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects
    • G01F1/06Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission
    • G01F1/075Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00Details of, or accessories for, apparatus of the preceding groups insofar as such details or appliances are not adapted to particular types of such apparatus

Abstract

The invention discloses a kind of fluid flowmeter, wheel rotation is arranged in impeller placing chamber;Liquid-driving impeller into impeller placing chamber is rotated in impeller placing chamber, and magnet is provided with impeller;Signal output apparatus is electrically connected with display device;Being provided with the protection circuit is used to prevent from burning out the protection diode of circuit during power electrode wrong;Circumferentially uniformly offer conduit in the interior sidewall surface of the impeller placing chamber, the conduit with the projection parallelogram in the plane of impeller diameter parallel.Simple in construction, circuit block compact conformation of the invention, integrated level is high, convenient to install, and small volume, occupies little space.Uniform circumferential channel adds the overflow section product at impeller blade tip clearance on impeller placement chamber inner sidewall, and when current are by impeller blade tip clearance, flow velocity slows down, pressure increases, and effectively inhibits the generation of blade tip clearance cavitation.

Description

A kind of fluid flowmeter
Technical field
The present invention relates to field of measuring technique, particularly a kind of fluid flowmeter.
Background technology
At present, common flowmeter volume is larger on the market, and device integration is not high, inconvenient during installation, and works as flowmeter
Causing Flowmeter Damages are easily caused after middle power supply is reversed.For example Application No. 201620778722.4, entitled Hot-wire coil is provided with a kind of clean fluid flowmeter, the detection unit of setting, the impeller of current impulsion carry magnet is in impeller Rotate in placing chamber, i.e., band moving magnet is rotated in circle online, generation induced-current, detection unit detects the induced-current and does one Surely change into water-flow signal, but its exist one it is serious the problem of:Exist between impeller and impeller placement cavity wall inevitable Ground close clearance, this, which is under flow action, is also easy to produce clearance cavitation.The generation of clearance cavitation can not only reduce the performance of impeller And its security and stability of operation, it can also cause impeller to dispose cavity wall, position produces cavitation erosion at impeller leaf top etc..
The content of the invention
In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide one kind utilizes current impulsion Wheel rotation produces the fluid flowmeter of electromagnetic induction principle design.
In order to solve the above technical problems, the technical solution adopted by the present invention is:
The impeller placing chamber of cylinder is offered in a kind of fluid flowmeter, including housing and lid, housing, lid is T Shape structure, lid has a boss being pivotally connected with impeller placing chamber, and one end of wheel rotation axle is connected to impeller placing chamber bottom Portion, the other end of wheel rotation axle and the boss of lid are connected, and wheel rotation is arranged in impeller placing chamber;It is provided with housing Liquid is led on the feed pathway of impeller placing chamber, lid and be provided with the liquid outlet channel of impeller placing chamber, into impeller peace The liquid-driving impeller for putting chamber is rotated in impeller placing chamber, and magnet is provided with impeller;Signal detection dress is provided with lid Put and display device, signal deteching circuit, signal Amplification and insulation circuit, protection circuit and signal output apparatus;Signal output electricity Road is electrically connected with display device;Being provided with the protection circuit is used to prevent from burning out the protection two of circuit during power electrode wrong Pole pipe;It is characterized in that:Circumferentially uniformly offer conduit in the interior sidewall surface of the impeller placing chamber, the conduit with leaf Projection parallelogram in the parallel plane of wheel axis.
Preferably, the conduit quantity is 18~36, and the circumference of interior sidewall surface of multiple conduits along impeller placing chamber is It is even to set.The very few inhibition to clearance cavitation of number of conduit is poor, number can excessively increase manufacturing cost and cause compared with Big hydraulic loss.
Preferably, for sealing effectiveness more, it is provided with sealing ring between the boss of the lid and impeller placing chamber.
Preferably, install for convenience and further increase ring at sealed effect, the opening of the impeller placing chamber Heavy platform is provided with, the sealing ring is arranged on the heavy platform.
Preferably, the feed pathway and liquid outlet channel are diagonally positioned.
Preferably, a diameter of D of impeller placing chamber, the groove depth of conduit is 0.1%~3%D.
Preferably, the groove depth of the conduit is 0.1%~3%D, and the too shallow suppression to impeller blade tip clearance cavitation of groove depth is imitated Really unfavorable, groove depth can increase very much the size of impeller placing chamber deeply.Conduit adds the overflow section product at impeller blade tip clearance, when Current are slowed down by flow velocity during impeller blade tip clearance, pressure increase, effectively inhibit the generation of blade tip clearance cavitation.
The present invention operation principle be:
Liquid enters impeller placing chamber from the feed pathway of housing, the liquid outlet channel outflow set from lid, high velocity stream Dynamic liquid driven wheel rotation, because being provided with magnet on impeller, equivalent to magnet in the electromagnetic field that signal supervisory instrument is formed Continuous cutting magnetic line, so that induced-current is produced in signal deteching circuit, signal Amplification and insulation circuit collection current signal And be amplified, signal is passed into signal output apparatus after filtering and isolation is disturbed, signal output apparatus is again by signal It is delivered in the display unit of display device, flow value is shown by display device.
The present invention is using after said structure, with technique effect:
Simple in construction, circuit block compact conformation of the invention, integrated level is high, convenient to install, and small volume, space-consuming It is small.Uniform circumferential channel adds the overflow section product at impeller blade tip clearance on impeller placement chamber inner sidewall, when current are logical Flow velocity slows down when crossing impeller blade tip clearance, pressure increases, and effectively inhibits the generation of blade tip clearance cavitation.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
The structural representation of conduit is opened up on Fig. 2 impellers placement chamber inner sidewall.
Fig. 3 is the circuit structure of signal supervisory instrument.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
As shown in figure 1, a kind of fluid flowmeter, including housing 2 and lid 1, the impeller peace of cylinder is offered in housing Chamber 3 is put, lid is T-shaped structure, and lid has a boss being pivotally connected with impeller placing chamber, and one end of wheel rotation axle is connected to Impeller placing chamber bottom, the other end of wheel rotation axle and the boss of lid are connected, and wheel rotation is arranged in impeller placing chamber; The liquid outlet channel that impeller placing chamber is provided with the feed pathway that liquid is led to impeller placing chamber, lid is provided with housing, Feed pathway and liquid outlet channel are diagonally positioned, and the liquid-driving impeller 4 into impeller placing chamber is rotated in impeller placing chamber, Magnet is both provided with each blade of impeller;It is provided with signal supervisory instrument and display device on lid, signal deteching circuit, Signal Amplification and insulation circuit, protection circuit and signal output apparatus;Signal output apparatus is electrically connected with display device;It is described to protect Being provided with protection circuit is used to prevent from burning out the protection diode of circuit during power electrode wrong.
It is provided with sealing ring, the opening of the impeller placing chamber and is arranged circumferentially between the boss and impeller placing chamber of lid There is heavy platform, the sealing ring is arranged on the heavy platform.
As shown in Fig. 2 circumferentially uniformly offering conduit 5 in the interior sidewall surface of the impeller placing chamber, the conduit exists With the projection parallelogram in the plane of impeller diameter parallel.In the present embodiment, the diameter D of impeller placing chamber is 90cm, When the groove depth of conduit is 0.09cm-0.27cm, blade tip clearance cavitation phenomenon is not obvious.
A kind of method for measuring fluid flow, including step:
Step one, flowmeter is assembled;The lid and case lid of flowmeter are combined, lid and housing junction are set For sealed sealing ring;Impeller placing chamber is provided with housing, after lid and case lid are combined, it is ensured that impeller placing chamber Interior impeller shaft is rotated and set perpendicular to lid and housing;Offered on lid and offer out liquid on feed pathway, housing Passage;Integrally disposed on lid to have signal supervisory instrument and display device, signal supervisory instrument includes signal deteching circuit, signal Amplification and insulation circuit, protection circuit and signal output apparatus;Signal output apparatus is electrically connected with display device;
Step 2, fluid-through tube is connected in the feed pathway of lid, and liquid, liquid impeller are conveyed into feed pathway Rotate at a high speed, induced-current is produced in signal deteching circuit, sensor current signal is amplified by signal Amplification and insulation circuit, conversion Into the current signal or frequency signal of standard, shown on the display apparatus by signal output apparatus.
Signal supervisory instrument is prior art, and its structure can be with as shown in figure 3, can also have identical or equivalent for other Sensor current signal is converted to fluid flow rate signal by the structure of function, realization.
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, by above-mentioned description, relevant staff is complete Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.

Claims (5)

1. offering the impeller placing chamber of cylinder in a kind of fluid flowmeter, including housing and lid, housing, lid is T-shaped Structure, lid has a boss being pivotally connected with impeller placing chamber, and one end of wheel rotation axle is connected to impeller placing chamber bottom, The other end of wheel rotation axle and the boss of lid are connected, and wheel rotation is arranged in impeller placing chamber;Be provided with housing by Liquid leads on the feed pathway of impeller placing chamber, lid the liquid outlet channel for being provided with impeller placing chamber, into impeller placing chamber Liquid-driving impeller rotated in impeller placing chamber, be provided with magnet on impeller;Be provided with lid signal supervisory instrument and Display device, signal supervisory instrument includes signal deteching circuit, signal Amplification and insulation circuit, protection circuit and signal output electricity Road;Signal output apparatus is electrically connected with display device;Being provided with the protection circuit is used to prevent from burning during power electrode wrong The protection diode of bad circuit;It is characterized in that:Conduit is circumferentially uniformly offered in the interior sidewall surface of the impeller placing chamber, The conduit with the projection parallelogram in the plane of impeller diameter parallel.
2. fluid flowmeter according to claim 1, it is characterised in that:Between the boss and impeller placing chamber of the lid It is provided with sealing ring.
3. fluid flowmeter according to claim 2, it is characterised in that:It is arranged circumferentially at the opening of the impeller placing chamber There is heavy platform, the sealing ring is arranged on the heavy platform.
4. fluid flowmeter according to claim 1, it is characterised in that:The feed pathway and liquid outlet channel are in diagonally to set Put.
5. fluid flowmeter according to claim 1, it is characterised in that:A diameter of D of impeller placing chamber, the groove depth of conduit For 0.1%~3%D.
CN201710198309.XA 2017-03-29 2017-03-29 A kind of fluid flowmeter Pending CN107063361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710198309.XA CN107063361A (en) 2017-03-29 2017-03-29 A kind of fluid flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710198309.XA CN107063361A (en) 2017-03-29 2017-03-29 A kind of fluid flowmeter

Publications (1)

Publication Number Publication Date
CN107063361A true CN107063361A (en) 2017-08-18

Family

ID=59620720

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710198309.XA Pending CN107063361A (en) 2017-03-29 2017-03-29 A kind of fluid flowmeter

Country Status (1)

Country Link
CN (1) CN107063361A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101173613A (en) * 2007-10-16 2008-05-07 西安交通大学 Top clearance leakage restraint structure of centripetal turbine wheel impeller
CN204532331U (en) * 2015-02-27 2015-08-05 中国石油天然气股份有限公司 Turbine measurement mechanism
CN205714923U (en) * 2016-03-18 2016-11-23 江苏大学 A kind of diagonal pumps
CN205879255U (en) * 2016-07-21 2017-01-11 沧州天仪仪器仪表有限公司 Clean fluidflowmeter
CN206002155U (en) * 2016-07-21 2017-03-08 沧州天仪仪器仪表有限公司 A kind of troubled liquor flow detection meter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101173613A (en) * 2007-10-16 2008-05-07 西安交通大学 Top clearance leakage restraint structure of centripetal turbine wheel impeller
CN204532331U (en) * 2015-02-27 2015-08-05 中国石油天然气股份有限公司 Turbine measurement mechanism
CN205714923U (en) * 2016-03-18 2016-11-23 江苏大学 A kind of diagonal pumps
CN205879255U (en) * 2016-07-21 2017-01-11 沧州天仪仪器仪表有限公司 Clean fluidflowmeter
CN206002155U (en) * 2016-07-21 2017-03-08 沧州天仪仪器仪表有限公司 A kind of troubled liquor flow detection meter

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Application publication date: 20170818

RJ01 Rejection of invention patent application after publication