CN2906562Y - Trapezoid/wedge flow meter - Google Patents
Trapezoid/wedge flow meter Download PDFInfo
- Publication number
- CN2906562Y CN2906562Y CN 200520001981 CN200520001981U CN2906562Y CN 2906562 Y CN2906562 Y CN 2906562Y CN 200520001981 CN200520001981 CN 200520001981 CN 200520001981 U CN200520001981 U CN 200520001981U CN 2906562 Y CN2906562 Y CN 2906562Y
- Authority
- CN
- China
- Prior art keywords
- flow meter
- trapezoidal wedge
- utility
- restriction device
- trapezoid
- 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.)
- Expired - Fee Related
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- Measuring Volume Flow (AREA)
Abstract
The utility model discloses a trapezoid wedge shape flow meter for common medium flow measurement and dirt media. A trapezoid wedge with the bottom angle of Theta, Beta, the upper bottom width of B and the height of H is arranged in a circular pipe with the diameter of D. The flow meter ensures that the side wall and the pipe wall of part of the throttle parts are straight with trimmed round angle at apex angle. The utility model has the advantages of wide range ratio, low pressure loss, simple structure, easy installation, operation and maintenance.
Description
Affiliated technical field
The utility model relates to a kind of flow measurement instrument with higher accuracy, is particularly useful for the trapezoidal wedge shape flowmeter of dirty medium.
Background technology
At present, differential pressure flowmeter is most widely used a kind of measurement instrument.Differential pressure flowmeter is made up of three parts such as restriction device, pressure obtaning device and differential pressure transmitter that flow converted to differential pressure signal usually.The restriction flowmeter of forming by restriction device and differential pressure gauge wherein with the most use.Commonly used in the restriction flowmeter have standard orifice plate, calibrating nozzle, Venturi tube, a wedge shape flowmeter etc., and they respectively have characteristics, the broad quantum that has, and the pressure loss that has is little, the suitable dirty fluid that has etc.
Summary of the invention
In order to overcome the deficiency of existing flowmeter, the utility model provides a kind of trapezoidal wedge shape flowmeter, and this flowmeter not only has the range of broad, good linearity, and also the pressure loss is little, and suitable dirty fluid.
The technical scheme that its technical matters that solves the utility model adopts is: as shown in Figure 1, the top wall of trapezoidal wedge 1 is an arc surface, paste tightly mutually with inner-walls of duct, following wall is a plane, this plane parallel is in the tube hub line, and the right and left wall also is two tapered planes, and this base angle is respectively θ, β, last bottom width is B, and height is installed in the pipe for the trapezoidal wedge 1 of H.For reducing the separation flow whirlpool and wearing and tearing in use cause new error, at drift angle place rounded corner.When fluid flows through the trapezoidal wedge 1 of ducted restriction device, because the variation of flow section in the trapezoidal wedge of restriction device 1 front and back, has produced certain pressure reduction, read differential pressure information, the funtcional relationship according to differential pressure and flow draws pipeline flow.According to the needs of flow range in the practicality, the demand of the throttling element pressure loss and the restriction of flowmeter length, can adjust 1 physical dimension of trapezoidal wedge, such as, ratio of height to diameter H/D, base angle θ, β, last bottom width B etc.
The beneficial effects of the utility model are, except that can be used for also can be used for measuring dirty medium general rate-of flow measures, have the range ratio of broad, and the pressure loss is little, and simple in structure, install, convenient maintenance.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the restriction device structural representation () of trapezoidal wedge shape flowmeter
Fig. 2 is the restriction device structural representation (two) of trapezoidal wedge shape flowmeter
Embodiment
In Fig. 1, because this structure Design, guaranteed that partial throttling spare limit wall and duct wall are straight, easy generation alluvial and abrasion deformation unlike more existing differential pressure gauges like this, only need restriction device is changeed half-turn at the fluid that contains suspension, the dirty medium of the different severes of deposition, out of position following installation that is about to trapezoidal wedge gets final product.
Claims (2)
1. trapezoidal wedge shape flowmeter, its main parts is the trapezoidal wedges of restriction device, the top wall that it is characterized in that the trapezoidal wedge of restriction device (1) is an arc surface, pastes tightly mutually with inner-walls of duct; Following wall is a plane, and this plane parallel is in the tube hub line, and the right and left wall also is two tapered planes.
2. trapezoidal wedge shape flowmeter according to claim 1, the drift angle place that it is characterized in that the trapezoidal wedge of restriction device (1) is a fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001981 CN2906562Y (en) | 2005-02-21 | 2005-02-21 | Trapezoid/wedge flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001981 CN2906562Y (en) | 2005-02-21 | 2005-02-21 | Trapezoid/wedge flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2906562Y true CN2906562Y (en) | 2007-05-30 |
Family
ID=38115203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520001981 Expired - Fee Related CN2906562Y (en) | 2005-02-21 | 2005-02-21 | Trapezoid/wedge flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2906562Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019853A (en) * | 2014-06-05 | 2014-09-03 | 唐力南 | Diffusion tube type rectangular flow meter |
| CN105466502A (en) * | 2014-12-22 | 2016-04-06 | 王子平 | Suspension dike flowmeter |
-
2005
- 2005-02-21 CN CN 200520001981 patent/CN2906562Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019853A (en) * | 2014-06-05 | 2014-09-03 | 唐力南 | Diffusion tube type rectangular flow meter |
| CN105466502A (en) * | 2014-12-22 | 2016-04-06 | 王子平 | Suspension dike 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 |