CN201107062Y - Multifunctional intelligent ultra-small volume meter - Google Patents
Multifunctional intelligent ultra-small volume meter Download PDFInfo
- Publication number
- CN201107062Y CN201107062Y CNU2007200465165U CN200720046516U CN201107062Y CN 201107062 Y CN201107062 Y CN 201107062Y CN U2007200465165 U CNU2007200465165 U CN U2007200465165U CN 200720046516 U CN200720046516 U CN 200720046516U CN 201107062 Y CN201107062 Y CN 201107062Y
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- impeller
- signal detector
- bearing
- guide piece
- magnetoelectric induction
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Abstract
The utility mode relates to a multifunctional intelligent subminiature flow meter, which comprises fasteners (1), a front guide piece (3), thrust plates (4), an impeller (5), a magnetoelectric induction type signal detector (7), a bearing (8), a rear guide piece (9), and a signal processing circuit which are arranged in a casing (2); the front guide piece (3) and the rear guide piece (9) are arranged in a pipeline inside the casing (2) by the fasteners (1), the directions of the front and rear guide pieces are same with the direction of the pipeline; the two ends of the bearing (8) provided with the impeller (5) are respectively arranged in the front guide piece (3) and the rear guide piece (9), the two ends of the bearing (8) are also respectively provided with thrust plates (4); the magnetoelectric induction type signal detector (7) is of variable magnetic resistance type, and consists of a permanent magnet steel, an iron core, and a coil, the magnetoelectric induction type signal detector (7) is arranged above the impeller (5), the caliber of the pipeline is 1.8-2.2 mm. Compared with the prior art, as the caliber of the pipe line is only 1.8-2.2 mm, the flow meter has a lower measurement limit which reaches 0.03 m <3> / h, and a higher measurement precision which reaches one grade.
Description
One, technical field
The utility model relates to liquid flow sensor, the extra small flowmeter of particularly a kind of multifunctional intelligent.
Two, background technology
In the production run of a lot of enterprises, need know the flow of used liquid, comprise instantaneous delivery and integrated flux.The method of measurement fluid flow has a variety of, has ultrasonic measurement, differential pressure type measurement, turbine type to measure or the like, and wherein the precision of turbine streaming measurement is the highest.At present, turbo flow meter commonly used both at home and abroad is to come meter fluid by the rotating speed that detects turbine.Its structure is generally: turbine, and turboshaft and axle support member are all installed along housing interior conduit direction, and fluid enters and discharges along the tube chamber axial direction.Its upstream fluid pressure in axial direction acts on turbo blade, promotes the turbine rotation, realizes measuring purpose with this.The turbo flow meter of this structure is because exist bigger slit, when the downstream fluid can not be full of tube chamber between two blades of turbine, particularly under the situation of low discharge, a part of fluid passes through between two blades, and its acting force is more little, flow loss is big more, and error in dipping is big more.Thereby cause the turbo flow meter flow range little, defectives such as low discharge metering poor stability.In addition, because the special construction of turbo flow meter blade, its irregular movement of upstream fluid when rotated and the vortex phenomenon that downstream fluid produces influence secondary speed, cause measuring misalignment, and the accuracy of turbo flow meter and stability can't be guaranteed.Therefore, the turbo flow meter of said structure will take appropriate measures in use, revises its unfavorable factor, improves its stability and accurate measurement performance, and the method for taking is: level or flowmeter vertically is installed; Upstream and downstream is installed enough straight lengths; Be equipped with rectification facilities etc.Require flowmeter upstream and downstream pressure substantially constant simultaneously, fluid flows steadily, and downstream fluid is full of tube chamber etc.Like this, the supporting in use facility of turbo flow meter is many, and cost increases, and the factor that influences accuracy of detection is many.Limited the usable range of turbo flow meter.
Three, summary of the invention
Measuring low discharge in order to solve existing flowmeter, the deficiency of especially extra small flow aspect, the utility model provides a kind of multifunctional intelligent extra small flowmeter, by flow of liquid through sensor, impeller is rotated, its rotating speed is directly proportional with flow velocity, passes through conversion again, the flow of more accurate measurement liquid; Band correction coefficient in the sensor makes sensor have versatility more simultaneously, can change mutually, and need not change compensation coefficient.
The technical solution of the utility model is:
The extra small flowmeter of a kind of multifunctional intelligent comprises the securing member 1, preceding guide 3, thrust plate 4, impeller 5, magnetoelectric induction signal detector 7, bearing 8, the back guide 9 that are installed in the housing 2.Forward and backward guide 3 and 9 is contained in housing 2 interior conduits by securing member 1, and direction is identical with duct orientation.Bearing 8 two ends that impeller 5 is housed are located at respectively in forward and backward guide 3 and 9, also are respectively equipped with thrust plate 4 at the two ends of bearing 8.Magnetoelectric induction signal detector 7 is a variable reluctance, comprises permanent-magnet steel, iron core, coil, and this magnetoelectric induction signal detector 7 is located at impeller 5 tops.Described pipe diameter is 2 ± 0.2mm.
The utility model also comprises the EEPROM and the microprocessor of amplifying circuit, storage correction coefficient.The EEPROM that also comprises amplifying circuit, storage correction coefficient; Amplifying circuit connects the output of magnetoelectric induction signal detector (7); EEPROM is provided with the interface with single chip communication.Correction coefficient is drawn by the verification of flow calibration equipment.
Principle of the present utility model is: when the fluid to be measured flows through sensor, under the effect of fluid, impeller is stressed to be rotated, its rotating speed is directly proportional with the pipeline mean flow rate, and permanent-magnet steel is attractive to blade, produces magnetic resistance moment, the change of the rotation period of impeller has also changed the magnetic resistance value (being the equal of the Dyn. structure of an abbreviation) of magnetoelastic transducer, the generating period variation thereupon of magnetic flux in the magnetic test coil produces periodic induced potential, i.e. electric impulse signal.This signal is delivered to microprocessor after amplifying through amplifier, and microprocessor send demonstration, PC etc. after signal is carried out data processing.
This apparatus features is: because pipe diameter has only 2 ± 0.2mm, so the low 0.03m that reaches of measurement lower limit
3/ h; The measuring accuracy height reaches 1 grade; Many flowmeters can carry out communication with same PC; Add a storer in sensor, and correction coefficient is existed in this storer, strengthened the versatility of sensor, just sensor can exchange, and does not need from the new settings correction coefficient.
Four, description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the utility model application principle block diagram
Securing member 1, housing 2, preceding guide 3, thrust plate 4, impeller 5, magnetoelectric induction signal detector 7, bearing 8, back guide 9
Five, embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1, the extra small flowmeter of a kind of multifunctional intelligent comprises the securing member 1, preceding guide 3, thrust plate 4, impeller 5, magnetoelectric induction signal detector 7, bearing 8, the back guide 9 that are installed in the housing 2.Forward and backward guide 3 and 9 is contained in housing 2 interior conduits by securing member 1, and direction is identical with duct orientation.Bearing 8 two ends that impeller 5 is housed are located at respectively in forward and backward guide 3 and 9, also are respectively equipped with thrust plate 4 at the two ends of bearing 8.Magnetoelectric induction signal detector 7 is a variable reluctance, comprises permanent-magnet steel, iron core, coil, and this magnetoelectric induction signal detector 7 is located at impeller 5 tops.Above-mentioned pipe diameter is 2mm.Above-mentioned impeller 5 and magnetoelectric induction signal detector 7 are formed flow sensor.
The utility model also comprises the EEPROM of amplifying circuit, storage correction coefficient.Magnetoelectric induction signal detector 7 output electric signal are delivered to microprocessor after isolating by photoelectricity again after amplifying circuit amplifies; Microprocessor also connects EEPROM, reads correction coefficient wherein; Microprocessor adds up to signal and carries out computing with coefficient.
Correction coefficient is drawn by the verification of flow calibration equipment.It pays no attention to the flow mechanism of sensor internal fluid fully, and sensor as a black box, is determined its conversion coefficient according to input (flow) and output (frequency pulse signal), and it is convenient to practical application.But be noted that this conversion coefficient (instrument coefficient) is with good conditionsi, its verification condition is reference conditions, if depart from this condition when using, coefficient will change, the situation view sensor type of variation, the situation of piping erection condition and physical properties of fluids parameter and deciding.
By the rotation of impeller 5, turbine flow transducer is gathered data on flows, and the data after the collection are carried out the magnetoelectricity conversion at the scene, signal is amplified to 12V.Just the EEPROM with sensor, magnetoelectricity conversion portion, amplifying circuit, storage coefficient integrates, and places the scene.As shown in Figure 2, signal after the amplification is delivered to signal processing unit after isolating through photoelectricity, and Chip Microcomputer A is read the coefficient among the EEPROM, and the signal that signal processing unit is sent here adds up and carries out computing with coefficient; Calculated result is delivered to single-chip microcomputer B.Single-chip microcomputer B shows data by LCD, by the RS485 interface data are delivered to PC simultaneously; Programme with VB in PC inside, utilization SQLSERVE2000 mode is stored, inquired about data.In order to realize that many flowmeters and a PC carry out communication, a multi-serial-port card has been installed in PC, can connect 4 or 8 flowmeters as required simultaneously.
The happy golden panda of this device process Electrical Appliances Co., Ltd quality authentication laboratory is on probation, stable performance, and the measuring accuracy height, easy to use, effect is relatively good, has improved user's work efficiency greatly, and has obtained user's favorable comment.
Claims (2)
1, the extra small flowmeter of a kind of multifunctional intelligent comprises the securing member (1), preceding guide (3), thrust plate (4), impeller (5), magnetoelectric induction signal detector (7), bearing (8), back guide (9) and the signal processing circuit that are installed in the housing (2); Forward and backward guide (3) and (9) are contained in housing (2) interior conduit by securing member (1), and direction is identical with duct orientation; Bearing (8) two ends that impeller (5) are housed are located at respectively in forward and backward guide (3) and (9), also are respectively equipped with thrust plate (4) at the two ends of bearing (8); Magnetoelectric induction signal detector (7) is a variable reluctance, comprises permanent-magnet steel, iron core, coil, and this magnetoelectric induction signal detector (7) is located at impeller (5) top, and the bore that it is characterized in that described pipeline is 2 ± 0.2mm.
2, the extra small flowmeter of multifunctional intelligent according to claim 1 is characterized in that this flowmeter also comprises the EEPROM of amplifying circuit, storage correction coefficient; Amplifying circuit connects the output of magnetoelectric induction signal detector (7); EEPROM is provided with the interface with single chip communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200465165U CN201107062Y (en) | 2007-10-25 | 2007-10-25 | Multifunctional intelligent ultra-small volume meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200465165U CN201107062Y (en) | 2007-10-25 | 2007-10-25 | Multifunctional intelligent ultra-small volume meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201107062Y true CN201107062Y (en) | 2008-08-27 |
Family
ID=39958869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200465165U Expired - Fee Related CN201107062Y (en) | 2007-10-25 | 2007-10-25 | Multifunctional intelligent ultra-small volume meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201107062Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267361A (en) * | 2013-04-17 | 2013-08-28 | 浙江长兴奥利尔家用电器有限公司 | Water pipe connector of water heater |
| CN104776888A (en) * | 2015-04-02 | 2015-07-15 | 南京祥源动力供应有限公司 | Energy-saving spray volume metering device for automobile rain drop test |
| CN106441466A (en) * | 2016-11-25 | 2017-02-22 | 北京奥特美克科技股份有限公司 | Electromagnetic water meter |
| CN110044425A (en) * | 2019-05-23 | 2019-07-23 | 开封仪表有限公司 | A kind of run-in index turbine flow transducer |
-
2007
- 2007-10-25 CN CNU2007200465165U patent/CN201107062Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267361A (en) * | 2013-04-17 | 2013-08-28 | 浙江长兴奥利尔家用电器有限公司 | Water pipe connector of water heater |
| CN104776888A (en) * | 2015-04-02 | 2015-07-15 | 南京祥源动力供应有限公司 | Energy-saving spray volume metering device for automobile rain drop test |
| CN106441466A (en) * | 2016-11-25 | 2017-02-22 | 北京奥特美克科技股份有限公司 | Electromagnetic water meter |
| CN106441466B (en) * | 2016-11-25 | 2023-07-14 | 北京奥特美克科技股份有限公司 | Magneto-electric water meter |
| CN110044425A (en) * | 2019-05-23 | 2019-07-23 | 开封仪表有限公司 | A kind of run-in index turbine flow transducer |
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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 |
Granted publication date: 20080827 Termination date: 20151025 |
|
| EXPY | Termination of patent right or utility model |