CN2747551Y - Eccentrical single rotor type measuring mechanism for flow meter - Google Patents
Eccentrical single rotor type measuring mechanism for flow meter Download PDFInfo
- Publication number
- CN2747551Y CN2747551Y CN 200420098514 CN200420098514U CN2747551Y CN 2747551 Y CN2747551 Y CN 2747551Y CN 200420098514 CN200420098514 CN 200420098514 CN 200420098514 U CN200420098514 U CN 200420098514U CN 2747551 Y CN2747551 Y CN 2747551Y
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- rotor
- cylinder
- shell
- fixed
- right cylinder
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Abstract
The utility model relates to a measuring device, in particular to an eccentric single rotor type measuring mechanism for flow meter. The technical proposal is that the measuring mechanism is composed of a casing, a central axis, a rotor and a partition board. The casing is a sealing housing which is mutually perforated and is formed with a hollow cylinder and a pipe fitting with an inlet and an outlet by intersecting. The central axis is fixed on the axial center of the cylinder and one end of the central axis extends from the cylinder at least. The rotor is the cylinder which is eccentrically fixed on the central axis and is provided with a U'-shaped gutter along the central axis outwards. The outer circle of the eccentric part of the rotor is tangent with the inner circle of the cylinder of the casing. The partition board is arranged in the 'U' shape of the rotor and is fixed on the vertically tangent position of the cylinder of the casing and the pipe fitting. The effects of the utility model are that the flowmeter not only has the general characteristics of the volumetric flowmeter, but also has the characteristics of simple structure, small effect from the physical characteristic and the flowing state of the measuring medium and accurate measurement of the fluid with large viscosity.
Description
One, technical field: the utility model relates to a kind of measuring apparatus, particularly a kind of eccentric single rotor formula measuring mechanism that is used for flowmeter.
Two, background technology: the measuring mechanism of flowmeter is the preceding end core measuring mechanism that constitutes flowmeter, and it combines common composition flowmeter with counting mechanism, and whether the measurement of flowmeter is accurate, preceding end core measuring mechanism is depended in practicality fully.Latest generation volumeter on the domestic and international market mainly contains UF-flowmeter (UniformFlowMeter) and LLT type duplex rotor meter at present.The measuring mechanism of UF-flowmeter is by the spiral fashion cavity of having formed several known volume between the helical rotor that is installed in a pair of uniqueness in the housing measurement chamber and housing, the cover plate, under the effect of measured medium, the minute-pressure difference of importing and exporting by flowmeter promotes two helical rotor engagement rotations that physical dimension is identical, rotation direction is opposite, ceaselessly liquid is delivered to outlet from inflow point, the flow of flowmeter of flowing through is directly proportional with the revolution of helical rotor, directly reads the cumulative volume flow of the flowmeter of flowing through on counter by the conversion of counting throw-over gear.Its shortcoming is: 1) owing to adopt the highest pressure-bearing of monomer structure limited; 2) can not measure the medium that is corrosive.
The LLT duplex rotor meter also is a kind of novel volumeter.Its measuring mechanism is installed in a pair of helical rotor and the casing in the batch meter, the spiral fashion cavity of having formed several known volume between the cover plate, under the effect of measured medium, the minute-pressure difference of importing and exporting by the metering casing promotes two physical dimensions, the number of teeth, (guaranteeing that by a pair of synchromesh gear two rotors keep suitable position relation) rotated in the rotation direction non-engagement of rotor all inequality, ceaselessly liquid is delivered to outlet from inflow point, the flow of flowmeter of flowing through is directly proportional with the revolution of helical rotor, directly reads the cumulative volume flow of the flowmeter of flowing through on counter by the conversion of counting throw-over gear.Its shortcoming is: 1) complex structure, maintenance, repair inconvenience; 2) need synchromesh gear could guarantee two rotor correct engagement; 3) rotor material softer (aluminium alloy); 4) flowmeter must level be installed, and can not vertically install and use; 5) price height; 6) can not measure Korrosionsmedium.
Three, summary of the invention: the purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of eccentric single rotor formula measuring mechanism that is used for flowmeter is provided.
Its technical scheme is: comprise shell, central shaft, rotor and dividing plate composition, shell is the right cylinder and the crossing can that connects mutually that forms of the pipe fitting that has import and export by hollow, central shaft is fixed on cylinder axis in the heart, and its at least one end stretches out from the shell right cylinder, rotor is that off-centre is fixed on the right cylinder on the central shaft, and outwards be provided with " U " shape groove along central shaft, circle is tangent in the cylindrical of rotor eccentricity part and the right cylinder of shell, dividing plate is located in rotor " U " shape, and is fixed on the position, the vertical point of contact with pipe fitting of right cylinder of shell.Rotor wherein can also be fixed on the central shaft by right cylinder interval, the off-centre of two symmetries, and circle is tangent in the right cylinder of cylindrical cylindrical and shell, dividing plate is located between two symmetrical right cylinders forming rotor, and is fixed on the position, the vertical point of contact with pipe fitting of right cylinder of shell.
Its principle of work be when the detected fluid flowmeter of flowing through be the pressure that produces, promoting rotor is that the center rotatablely moves as off-centre with the central shaft, because the effect of dividing plate, between rotor and shell, form continuously, periodically variable cavity, rotor drives central shaft and rotates by the sensor measurement gyro frequency, comes meter fluid flow.
Effect of the present utility model is: this flowmeter has outside the general characteristic of volumeter, also has simple in structurely, and the influence of physical characteristics, flow state of being measured medium is little, can be to the characteristics such as fluid accurate measurement of big viscosity.
Four, description of drawings: accompanying drawing 1 is the sectional structure chart of a kind of embodiment of the present utility model; Accompanying drawing 2 is the A-A cut-open views among Fig. 1.
Five, embodiment: shown in Fig. 1,2, comprise shell 1, central shaft 2, rotor 3 and dividing plate 4 compositions.Shell 1 is that central shaft 2 is fixed on shell 1 cylinder axis in the heart, and its at least one end stretches out from right cylinder by the right cylinder and the crossing can that connects mutually that forms of the pipe fitting that has import and export of hollow.Rotor 3 be by the right cylinder of two symmetries at interval, off-centre is fixed on the central shaft 2, and justifies tangent in the right cylinder of cylindrical cylindrical and shell.Dividing plate 4 is located between two symmetrical right cylinders forming rotor 3, and is fixed on the position, the vertical point of contact with pipe fitting of right cylinder of shell.Dividing plate 4 and rotor 3 are divided into two parts to whole measurement chamber, entrance cavity 5 and outlet plenum 6 with the osculatory of housing 1.
Claims (2)
1, a kind of eccentric single rotor formula measuring mechanism that is used for flowmeter, it is characterized in that: comprise shell, central shaft, rotor and dividing plate are formed, shell is the right cylinder and the crossing can that connects mutually that forms of the pipe fitting that has import and export by hollow, central shaft is fixed on cylinder axis in the heart, and its at least one end stretches out from the shell right cylinder, rotor is that off-centre is fixed on the right cylinder on the central shaft, and outwards be provided with " U " shape groove along central shaft, circle is tangent in the cylindrical of rotor eccentricity part and the right cylinder of shell, dividing plate is located in rotor " U " the shape groove, and is fixed on the position, the vertical point of contact with pipe fitting of right cylinder of shell.
2, the eccentric single rotor formula measuring mechanism that is used for flowmeter according to claim 1, it is characterized in that: rotor be by the right cylinder of two symmetries at interval, off-centre is fixed on the central shaft, and circle is tangent in the right cylinder of cylindrical cylindrical and shell, dividing plate is located between two symmetrical right cylinders forming rotor, and is fixed on the position, the vertical point of contact with pipe fitting of right cylinder of shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420098514 CN2747551Y (en) | 2004-11-23 | 2004-11-23 | Eccentrical single rotor type measuring mechanism for flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420098514 CN2747551Y (en) | 2004-11-23 | 2004-11-23 | Eccentrical single rotor type measuring mechanism for flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2747551Y true CN2747551Y (en) | 2005-12-21 |
Family
ID=35708090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420098514 Expired - Fee Related CN2747551Y (en) | 2004-11-23 | 2004-11-23 | Eccentrical single rotor type measuring mechanism for flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2747551Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344462A (en) * | 2017-01-23 | 2018-07-31 | 佛山市众泽机电科技有限公司 | A kind of three-apexed rotor flowmeter |
| CN112629601A (en) * | 2019-09-24 | 2021-04-09 | 中国石油化工股份有限公司 | Differential pressure type rotational flow flowmeter |
-
2004
- 2004-11-23 CN CN 200420098514 patent/CN2747551Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344462A (en) * | 2017-01-23 | 2018-07-31 | 佛山市众泽机电科技有限公司 | A kind of three-apexed rotor flowmeter |
| CN112629601A (en) * | 2019-09-24 | 2021-04-09 | 中国石油化工股份有限公司 | Differential pressure type rotational flow flowmeter |
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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 |