CN2795819Y - Vortex precession flow sensor - Google Patents
Vortex precession flow sensor Download PDFInfo
- Publication number
- CN2795819Y CN2795819Y CN 200520072168 CN200520072168U CN2795819Y CN 2795819 Y CN2795819 Y CN 2795819Y CN 200520072168 CN200520072168 CN 200520072168 CN 200520072168 U CN200520072168 U CN 200520072168U CN 2795819 Y CN2795819 Y CN 2795819Y
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- sensor
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- flow
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Abstract
The utility model discloses a precession vortex flow sensor, which comprises a vortex generating body (1), a flow channel cavity (3) and a vortex sensor (2), wherein the flow channel cavity (3) is composed of a shrinking section (5), a straight pipe section (6) and an enlarging section (7). The utility model is characterized in that the vortex generating body (1) is arranged in the shrinking section (5) of the flow channel cavity (3); a vane (4) is of an equal change rate curve shape rolled by a stainless steel sheet; the vortex sensor (2) arranged in the straight pipe section (6) of the flow channel cavity (3) is of a thin sheet shape. The utility model overcomes the defects that an ordinary precession vortex flow sensor has large pressure loss, and a straight line-shaped vane can not measure low flow. The utility model has the advantages of small pressure loss, wide flow range and good stability, and can measure corrosive mediums.
Description
Affiliated technical field
The utility model relates to a kind of precession vortex flow sensor.
Background technology
Precession vortex flow sensor is the main building block of precession vortex flowmeter, precession vortex flow sensor is by eddy generator, runner cavity and whirlpool sensor constitute, its principle of work is: when fluid enters eddy generator, blade on the eddy generator forces fluid to be rotated motion, so produce eddy-currents in the eddy generator back, when eddy-currents moves, under the effect that refluxes, enter the secondary helical motion, it is vortex movement, the change in torque of whirlpool sensor eddy-currents, the electric signal that output frequency is directly proportional with flow velocity receives processing by intelligent converter.At present, in use there is following shortcoming in the precession vortex flow sensor of ordinary construction: 1, the blade of eddy generator is a spirality, the unexpected break-in of fluid, and the pressure loss is big; 2, the blade of eddy generator is an aluminum alloy material, and thickness is big, influences actual internal area, has increased resistance; 3, the blade of eddy generator is aluminium alloy processing, and the surface is smooth inadequately, sticks impurity easily, influence stability; 4, the blade of eddy generator is an aluminum alloy materials, and corrosion-resistant can not be used in the corrosive medium occasion, and application surface is affected; 5, the blade of linear eddy generator also can make the unexpected break-in of fluid, and the pressure loss is big, in order to reduce crushing, has to reduce blade angle, like this, though reduced crushing, energy measurement low discharge not.
Summary of the invention
The utility model provides a kind of precession vortex flow sensor, overcomes the defective on the prior art, reaches that the pressure loss is little, flow range is wide, the purpose of good stability, applied range.
Technical solution of the present utility model is: this flow sensor comprises eddy generator, runner cavity and whirlpool sensor, the runner cavity is made of contraction section, straight length and expanding reach, it is characterized in that: eddy generator is arranged in the contraction section of runner cavity, the blade of eddy generator is a shaped form, and the whirlpool sensor that is installed in the straight length of runner cavity is a thin slice shape.
The utility model adopts shaped form eddy generator blade, and circulation area is big, and crushing is little, meets energy-saving and cost-reducing requirement, is guaranteeing can to drop to crushing more than 40% under the constant situation of low discharge lower limit.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Among the figure: 1 eddy generator, 2 whirlpool sensors, 3 runner cavitys, 4 blades, 5 contraction sections, 6 straight lengths, 7 expanding reach
Embodiment
As shown in Figure 1, this flow sensor comprises eddy generator 1, whirlpool sensor 2 and runner cavity 3, runner cavity 3 is made of contraction section 5, straight length 6 and expanding reach 7, eddy generator 1 is arranged in the contraction section 5 of runner cavity 3, the blade 4 of eddy generator 1 is for waiting shaped form of rate of change, and the whirlpool sensor 2 that is installed in the straight length 6 of runner cavity 3 is thin slice shape.
The blade 4 of eddy generator 1 of the present utility model is a shaped form, increases circulation area and makes fluid acceleration equate to reduce energy loss, further reduces the pressure loss; The shape such as change rate curve such as grade that blade 4 rolls into for stainless sheet steel, smooth surface reduces friction, and corrosion-resistant, adaptive surface is extensive.
Whirlpool sensor 2 of the present utility model adopts thin slice shape, reduces the choked flow face of sensor, has also improved sensitivity simultaneously.
Claims (2)
1. precession vortex flow sensor, comprise eddy generator (1), runner cavity (3) and whirlpool sensor device (2), runner cavity (3) is made of contraction section (5), straight length (6) and expanding reach (7), eddy generator (1) is arranged in the contraction section (5) of runner cavity (3), whirlpool sensor (2) is installed in the straight length (6) of runner cavity (3), it is characterized in that: the shape such as change rate curve such as grade that the blade (4) of eddy generator (1) rolls into for stainless sheet steel.
2. a kind of precession vortex flow sensor according to claim 1 is characterized in that: whirlpool sensor (2) is a thin slice shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520072168 CN2795819Y (en) | 2005-05-20 | 2005-05-20 | Vortex precession flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520072168 CN2795819Y (en) | 2005-05-20 | 2005-05-20 | Vortex precession flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2795819Y true CN2795819Y (en) | 2006-07-12 |
Family
ID=36813576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520072168 Expired - Fee Related CN2795819Y (en) | 2005-05-20 | 2005-05-20 | Vortex precession flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2795819Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759770A (en) * | 2013-12-12 | 2014-04-30 | 上海肯特仪表股份有限公司 | Vortex flowmeter and production method for same |
| CN116539473A (en) * | 2023-03-17 | 2023-08-04 | 天津大学 | Method for measuring wet gas phase content by utilizing precession vortex MEMS triaxial acceleration vector module value information |
-
2005
- 2005-05-20 CN CN 200520072168 patent/CN2795819Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759770A (en) * | 2013-12-12 | 2014-04-30 | 上海肯特仪表股份有限公司 | Vortex flowmeter and production method for same |
| CN103759770B (en) * | 2013-12-12 | 2017-12-22 | 上海肯特仪表股份有限公司 | Swirl flowmeter and preparation method thereof |
| CN116539473A (en) * | 2023-03-17 | 2023-08-04 | 天津大学 | Method for measuring wet gas phase content by utilizing precession vortex MEMS triaxial acceleration vector module value information |
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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 |