CN2230927Y - Gas flow-velocity meter - Google Patents
Gas flow-velocity meter Download PDFInfo
- Publication number
- CN2230927Y CN2230927Y CN 95204387 CN95204387U CN2230927Y CN 2230927 Y CN2230927 Y CN 2230927Y CN 95204387 CN95204387 CN 95204387 CN 95204387 U CN95204387 U CN 95204387U CN 2230927 Y CN2230927 Y CN 2230927Y
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- China
- Prior art keywords
- target
- target bar
- flow rate
- gas flow
- bar
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- Expired - Fee Related
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Abstract
The utility model relates to a gas flow rate measuring device. The existing gas flow rate measuring device with a large pipe diameter adopts a pressure difference measuring method in industrial production, when a flow rate is low, measuring precision is low, and a measured pipeline is blocked by smoke dusk. The utility model adopts a target rod 2 of which the front end is provided with a target plate 1 is arranged at the front end. At the time of work, the front part of the target rod extends into the measured pipeline. The middle part of the target rod 2 is provided with a seal cover 5, the intermediate back part is provided with a hinge supporting base 6, and the back end is connected with a force cell 7 and is provided with an initial position adjustor 9. When gas flows through the target plate 1, the target rod 2 can move with the supporting base 6 as a fulcrum, so the force cell 7 at the back end can immediately work, and the utility model has the advantages of high measuring precision and difficult block.
Description
The utility model relates to a kind of fluid speed measuring device, particularly a kind of device for measuring flow speed of gas that is applicable to the online detection of industrial big caliber gas flow rate.
At present, in commercial production, the device that is used to measure big caliber gas flow rate has dual oviduct, wing pitot tube, even speed tube etc.These devices all are the method velocity measurements that adopts the pressure measurement difference, and when the survey gas flow rate was low, the output pressure difference signal was little, and measuring accuracy is low.In addition, this method is had relatively high expectations to the gas cleanliness.When measuring flue gas, the measuring tube Louis is stopped up by flue dust, thereby normal detection of influence measured.
The purpose of this utility model provides a kind of measuring accuracy height, and the gas cleanliness are required lower big caliber device for measuring flow speed of gas.
Above-mentioned purpose is realized by following technical scheme.This measurement mechanism has a target bar (2), target bar front portion is stretched in the tested pipeline during use, target bar (2) the front end target plate (1) that is being connected, seal by flexible sealing cover (5) between target bar (2) and the tested pipeline, the postmedian of target bar (2) is provided with a hinged support seat (6), and the rear end of target bar links to each other with force cell (7) and is provided with initial position adjuster (9).
Said flexible sealing cover (5) can be that one one end links to each other with target bar (2), and the other end can be in the metallic bellows of tested pipeline (3) winding.
Said initial position adjuster (8) can be made up of cross bar that is located at target bar (2) rear end and top slidably slide block.
Said apparatus is installed on the tested horizontal pipe, mixes up the initial position of the target plate that tests the speed, and when gas stream is out-of-date, target plate institute is stressed to act on force cell by target bar, hinge and connecting rod, and target plate institute is stressed to be determined by following formula:
F＝1/2kpsv
2
In the formula: F---target plate institute is stressed
The density of P---tested gas
S---target plate useful area
The flow velocity of U---tested gas
K---proportionality constant
Following formula as seen, target plate stressed and gas flow rate square, and the useful area of target plate is directly proportional, and relevant with the position of fulcrum, as long as increase the useful area of target plate, selects rational position of the fulcrum, can obtain bigger power, can improve the sensitivity of measurement.Thereby it is low to have overcome existing measuring technique measuring accuracy, measures pipeline and the shortcoming stopped up.
Introduce a kind of embodiment below in conjunction with accompanying drawing
Fig. 1 is the front view of present embodiment
Fig. 2 is a present embodiment cruciform target plate front view
Fig. 3 is the front view of circular target plate
As shown in the figure.This device main body is a target bar (2), and the front portion of target bar (2) is stretched into from the tube wall opening part of tested pipeline (3).Front end is equipped with target plate (1), and between target bar (2) and the tested pipeline (3), the flexible sealing cover of being made up of metallic bellows and ring flange (5) seals.In tested pipeline (3) outside.Fixing support (4), support (4) is provided with a supporting base (6), and supporting base (6) target bar (2) by shaft support, on the support (4), force cell (7) is housed also, and force cell (7) links to each other with target bar (2) by the connecting rod (8) of adjustable-length.Rear end in target bar (2) is provided with the initial position adjuster of being made up of a slide block and cross bar (9).During work, at first stir the slide block on the initial position adjuster (9).Determine initial position.When tested gas stream was crossed target plate (1), target plate was stressed, and target bar (2) is a fulcrum with supporting base (6), by connecting rod (8) the suffered power of target plate (1) was passed to force cell (7), and output signal connects secondary instrument can show gas flow rate.
Claims (3)
1, a kind of device for measuring flow speed of gas, it is characterized in that: have a front portion can stretch into the interior target bar (2) of tested pipeline (3), target bar (2) the front end target plate (1) that is being connected, seal by flexible sealing cover (5) between target bar (2) and the tested pipeline (3), the postmedian of target bar (2) is provided with hinged support seat (6), and the rear end of target bar (2) links to each other with force cell (7) and initial position adjuster (9) is housed.
2, device for measuring flow speed of gas according to claim 1 is characterized in that: said flexible sealing cover (5) can be that one one end links to each other the metallic bellows that the other end is connected with tested pipeline with the target bar.
3, device for measuring flow speed of gas according to claim 1 is characterized in that: said initial position adjuster (8) can be made up of cross bar that is located at target bar (2) rear end and top slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95204387 CN2230927Y (en) | 1995-02-21 | 1995-02-21 | Gas flow-velocity meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95204387 CN2230927Y (en) | 1995-02-21 | 1995-02-21 | Gas flow-velocity meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2230927Y true CN2230927Y (en) | 1996-07-10 |
Family
ID=33856918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95204387 Expired - Fee Related CN2230927Y (en) | 1995-02-21 | 1995-02-21 | Gas flow-velocity meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2230927Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569480A (en) * | 2015-02-04 | 2015-04-29 | 西安科技大学 | Liquid impact force and flow velocity measuring instrument and measuring method thereof |
| CN105242065A (en) * | 2015-11-16 | 2016-01-13 | 杭州自动化技术研究院有限公司 | Device for measuring wind speed and wind direction |
| CN105675068A (en) * | 2016-01-18 | 2016-06-15 | 福建省云创集成科技服务有限公司 | Universal-type flow meter based on wing principle |
| CN110346598A (en) * | 2019-06-19 | 2019-10-18 | 南京卡德威焊切器材有限公司 | Carbon arc gouging gun air-flow velocity test device and its test method |
-
1995
- 1995-02-21 CN CN 95204387 patent/CN2230927Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569480A (en) * | 2015-02-04 | 2015-04-29 | 西安科技大学 | Liquid impact force and flow velocity measuring instrument and measuring method thereof |
| CN105242065A (en) * | 2015-11-16 | 2016-01-13 | 杭州自动化技术研究院有限公司 | Device for measuring wind speed and wind direction |
| CN105242065B (en) * | 2015-11-16 | 2019-01-01 | 杭州自动化技术研究院有限公司 | A kind of device measuring wind speed and direction |
| CN105675068A (en) * | 2016-01-18 | 2016-06-15 | 福建省云创集成科技服务有限公司 | Universal-type flow meter based on wing principle |
| CN110346598A (en) * | 2019-06-19 | 2019-10-18 | 南京卡德威焊切器材有限公司 | Carbon arc gouging gun air-flow velocity test device and its test method |
| CN110346598B (en) * | 2019-06-19 | 2023-08-11 | 南京卡德威焊切器材有限公司 | Device and method for testing airflow velocity of carbon arc gouging gun |
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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 |