CN202748062U - Venturi-shaped porous orifice plate flowmeter - Google Patents
Venturi-shaped porous orifice plate flowmeter Download PDFInfo
- Publication number
- CN202748062U CN202748062U CN 201220323927 CN201220323927U CN202748062U CN 202748062 U CN202748062 U CN 202748062U CN 201220323927 CN201220323927 CN 201220323927 CN 201220323927 U CN201220323927 U CN 201220323927U CN 202748062 U CN202748062 U CN 202748062U
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- orifice plate
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- venturi
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Abstract
The utility model relates to a venture-shaped porous orifice plate flowmeter, wherein a plurality of holes are formed on a board with a certain thickness and each hole takes a shape thin in middle and gradually thicker at two sides, namely a venture shape. When fluid flows through the orifice plate, pressure drop is produced and the flow of the fluid can be calculated through measuring the pressure drop at two sides of the orifice plate. As the venture shape is close to a streamline shape, the turbulent flow is reduced, so that the front and back straight pipe requirements are reduced, the pressure signal is more stable and the measuring accuracy is increased.
Description
Technical field
The utility model relates to a kind of multi-hole orifice flowmeter, and especially a kind of runner of each hole is the multi-hole orifice flowmeter of venturi shape.
Background technology
At present, the multi-hole orifice flow meter applications is comparatively extensive, and flow is crossed multi-hole orifice can produce Pressure Drop, comes the Fluid Computation flow by the pressure differential of measuring before and after the multi-hole orifice, compare single-hole orifice plate flowmeter have before and after straight length short, the characteristics that measuring accuracy is high.
Venturi tube is the gradually pipelines of chap of thin both sides, a kind of centre.Venturi meter is used for measuring the flow of the single-phase stabilized fluid of closed conduct, is usually used in measuring the flow of air, rock gas, coal gas, water or other fluid.
The utility model content
The measuring accuracy that requires and improve in order further to reduce multi-hole orifice flowmeter front and back straight length, the utility model proposes a kind of runner is the multi-hole orifice flowmeter of venturi shape, the straight length requirement has reduced turbulent flow, thereby has improved measuring accuracy before and after further having reduced.
The technical scheme that its technical matters that solves the utility model adopts is: have certain thickness sheet material at one and open several holes, in the middle of each hole has thin both sides gradually the shape of chap be venturi shape.When flow is crossed this orifice plate, can produce Pressure Drop, just can calculate the flow of fluid by the Pressure Drop of measuring diaphragm both sides.Because venturi shape close to streamlined, has been reduced turbulent flow, thereby straight length requirement before and after having reduced is same owing to having reduced turbulent flow, makes pressure signal more stable, thereby has improved measuring accuracy.
The beneficial effects of the utility model:
Venturi shape multi-hole orifice flowmeter of the present utility model has reduced the straight length requirement of flowmeter front and back, has improved measuring accuracy.
Description of drawings
Fig. 1 is front elevation of the present utility model.
Fig. 2 is three-dimensional side view of the present utility model.
Fig. 3 is three-dimensional section view of the present utility model.
Fig. 4 is section plan of the present utility model.
1. orifice plate bodies, 2. venturi shape discharge orifice among the figure.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the utility model is described further.
Among Fig. 1-4, showed venturi shape multi-hole orifice flowmeter of the present utility model, opened several venturi shape discharge orifices 2 at orifice plate body 1, in the middle of each hole has thin both sides gradually the shape of chap be venturi shape.This venturi shape multi-hole orifice flowmeter is installed in the pipeline, and flow is crossed venturi shape discharge orifice 2 can produce Pressure Drop before and after flowmeter, measure this pressure and put up with the flow that can calculate fluid.
Above an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (1)
1. venturi shape multi-hole orifice flowmeter, it is characterized in that: described venturi shape multi-hole orifice flowmeter is the orifice plate with several holes, thin two shape of chap gradually in the middle of each hole presents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323927 CN202748062U (en) | 2012-07-05 | 2012-07-05 | Venturi-shaped porous orifice plate flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220323927 CN202748062U (en) | 2012-07-05 | 2012-07-05 | Venturi-shaped porous orifice plate flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202748062U true CN202748062U (en) | 2013-02-20 |
Family
ID=47707440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220323927 Expired - Lifetime CN202748062U (en) | 2012-07-05 | 2012-07-05 | Venturi-shaped porous orifice plate flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202748062U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735293A (en) * | 2012-07-05 | 2012-10-17 | 中国天辰工程有限公司 | Venturi shaped porous orifice meter |
| CN106225857A (en) * | 2016-10-08 | 2016-12-14 | 贵州电网有限责任公司电力科学研究院 | A kind of current-sharing Combined type venturi tube apparatus for measuring air quantity |
| US11713986B2 (en) | 2018-02-23 | 2023-08-01 | Nanjing Exactra Automation Control Technology Co., Ltd. | Throttling component and conditioning and flowrate measurement device |
-
2012
- 2012-07-05 CN CN 201220323927 patent/CN202748062U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735293A (en) * | 2012-07-05 | 2012-10-17 | 中国天辰工程有限公司 | Venturi shaped porous orifice meter |
| CN106225857A (en) * | 2016-10-08 | 2016-12-14 | 贵州电网有限责任公司电力科学研究院 | A kind of current-sharing Combined type venturi tube apparatus for measuring air quantity |
| US11713986B2 (en) | 2018-02-23 | 2023-08-01 | Nanjing Exactra Automation Control Technology Co., Ltd. | Throttling component and conditioning and flowrate measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |