CN104482968A - Self-calibrating double-impeller turbine flowmeter - Google Patents
Self-calibrating double-impeller turbine flowmeter Download PDFInfo
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- CN104482968A CN104482968A CN201410748829.XA CN201410748829A CN104482968A CN 104482968 A CN104482968 A CN 104482968A CN 201410748829 A CN201410748829 A CN 201410748829A CN 104482968 A CN104482968 A CN 104482968A
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Abstract
The invention relates to a self-calibrating double-impeller turbine flowmeter comprising a housing. An impeller unit is disposed within the housing and comprises a front calibrating impeller device and a rear detecting impeller device. The front calibrating impeller device comprises a front calibrating impeller. The rear detecting impeller device comprises a rear detecting impeller. Blades of the front calibrating impeller and those of the rear detecting impeller have opposite spiral directions. The self-calibrating double-impeller turbine flowmeter has the advantages that startup flow rate of the flowmeter and a lower flow limit thereof can be greatly lowered, available upper flow limit is raised, and measuring range is wide; the front calibrating impeller is capable of self-calibrating and balancing the rear detecting impeller, in a certain range, although conditions of a medium have certain effect on bearings, metering precision of the flowmeter is not affected, and the service lives of the bearings are greatly prolonged.
Description
Technical field
The present invention relates to turbo flow meter, particularly relate to a kind of self-alignment bilobed wheel turbo flow meter.
Background technology
Turbo flow meter is speed mode instrument.It has very high degree of accuracy, repeatability, and structure is very simple also very well, especially, measurement range is also very wide; Volume is very little, lighter in weight, the pressure loss are all very little; And it is easy to maintenance.Be widely used in the industries such as oil, chemical industry, metallurgy, pipeline network of fuel gas in city.Especially in gas metering, transmission & distribution pipe is widely used in metering and gas pressure regulating station metering.But while using widely, because general gas flow turbo flow meter mainly contains initial-flow greatly, measurement range is narrow, and flux lower limit is high, and Long-Time Service, on shortcomings such as the impacts of bearing, have impact on turbo flow meter development.
Summary of the invention
Technical matters to be solved by this invention there is provided a kind of calibration impeller mechanism of turbo flow meter, greatly can reduce initial-flow and the flux lower limit of turbo flow meter, and improve the measurable flow amount upper limit, its measurement range is wide.
Technical scheme is as follows
A kind of self-alignment bilobed wheel turbo flow meter, comprise housing, impeller unit is provided with in described housing, it is characterized in that, described impeller unit comprises preposition calibration impeller unit and rearmounted detection impeller unit, described preposition calibration impeller unit comprises preposition calibration impeller, and described rearmounted detection impeller unit comprises rearmounted detection impeller, and the blade on described preposition calibration impeller and the blade on rearmounted detection impeller are arranged in opposite helical direction each other.
As further improvement, described preposition calibration impeller unit and described rearmounted detection impeller unit are symmetrical arranged.
As further improvement, described preposition calibration impeller unit also comprises front axle, front bearing, and described front axle runs through front bearing and preposition calibration impeller successively.
As further improvement, described rearmounted detection impeller unit also comprises rear axle, rear bearing, and described rear axle runs through rearmounted detection impeller and rear bearing successively.
As further improvement, axle is provided with signal wheel in the rear, and the top of described signal wheel is provided with input probe.
Beneficial effect
The present invention can reduce initial-flow and the flux lower limit of turbo flow meter greatly, and improve the measurable flow amount upper limit, its measurement range is wide.Its preposition calibration impeller, owing to having self calibration and equilibrium activity to rearmounted detection impeller, within the specific limits, although mixture condition equally has impact to bearing, can't affect flowmeter measuring accuracy, greatly expand the serviceable life of flowmeter bearing.Thus meet the very harsh use needs of user.
Accompanying drawing explanation
The present invention is further illustrated below in conjunction with accompanying drawing and case study on implementation.
Fig. 1 is cut-open view of the present invention;
Fig. 2 is structure diagram of the present invention.
Number in the figure: 100, impeller unit 110, preposition calibration impeller unit
111, preposition calibration impeller 112, front axle
113, front bearing 120, rearmounted detection impeller unit
121, rearmounted detection impeller 122, rear axle
123, rear bearing 200, signal wheel
300, input probe
Embodiment
For making to have a better understanding and awareness architectural feature of the present invention and effect of reaching, coordinating detailed description in order to preferred embodiment and accompanying drawing, being described as follows:
As depicted in figs. 1 and 2, in figure, the direction of arrow is that medium flows to, a kind of self-alignment bilobed wheel turbo flow meter, comprise housing (not shown), impeller unit 100 is provided with in housing, impeller unit 100 comprises preposition calibration impeller unit 110 and rearmounted detection impeller unit 120, preposition calibration impeller unit 110 is symmetrical arranged with rearmounted detection impeller unit 120, preposition calibration impeller unit 110 comprises preposition calibration impeller 111, rearmounted detection impeller unit 120 comprises rearmounted detection impeller 121, blade on blade on preposition calibration impeller 111 and rearmounted detection impeller 121 is arranged in opposite helical direction each other.Preposition calibration impeller unit also comprises front axle 112, front bearing 113, and front axle 112 runs through front bearing 113 and preposition calibration impeller 111 successively.Rearmounted detection impeller unit 120 also comprises rear axle 122, rear bearing 123, and rear axle 122 runs through rearmounted detection impeller 121 and rear bearing 123 successively.The end of rear axle 122, is provided with signal wheel 200, and the top of signal wheel 200 is provided with input probe 300.
Principle of work, when medium flows through impeller, under initial flow situation state, fluid produces rotary motion through preposition calibration impeller fluid, fluid is made to add radial rotary motion on the constant basis of axial flow velocity, add the driving force of fluid to rearmounted detection turbine, realize the object reducing initial-flow and flux lower limit.
When medium is within the scope of normal flow rate detection, due to the fluctuation by medium, or the impact of the factor such as bearing jam, the change of axle tolerance clearance, the impeller of general turbo flow meter will produce not normal running phenomenon, but this flowmeter has the design of preposition calibration blade wheel structure, this not normal running phenomenon can be suppressed to occur, drastically increase serviceable life and the measuring accuracy of flowmeter.
Equally, this turbo flow meter, when ultra high rate (the outrange upper limit), also has outstanding representation.When under the flow condition in outrange, at this moment the instrument coefficient of general turbo flow meter is bigger than normal, measuring error large, and can not detect.As adopted this structural design, now, just contrary with initial flow situation state, preposition calibration wheel speed is bigger than normal with corresponding rate-of flow ratio (instrument coefficient), now more easily form fluid to the reverse actuating force of rearmounted detection turbine, retardation can be had to rearmounted detection turbine meter coefficient is bigger than normal, reach the object that it detects ultra high flux (outrange).
This invention structure is equally also applicable to liquid turbo flow meter.
In sum, be only preferred embodiment of the present invention, not be used for limiting scope of the invention process, all equalizations of doing according to shape, structure, feature and the spirit described in the claims in the present invention scope change and modify, and all should be included in right of the present invention.
Claims (5)
1. a self-alignment bilobed wheel turbo flow meter, comprise housing, impeller unit is provided with in described housing, it is characterized in that, described impeller unit comprises preposition calibration impeller unit and rearmounted detection impeller unit, described preposition calibration impeller unit comprises preposition calibration impeller, and described rearmounted detection impeller unit comprises rearmounted detection impeller, and the blade on described preposition calibration impeller and the blade on rearmounted detection impeller are arranged in opposite helical direction each other.
2. the self-alignment bilobed wheel turbo flow meter of one according to claim 1, is characterized in that, described preposition calibration impeller unit and described rearmounted detection impeller unit are symmetrical arranged.
3. the self-alignment bilobed wheel turbo flow meter of one according to claim 1, is characterized in that, described preposition calibration impeller unit also comprises front axle, front bearing, and described front axle runs through front bearing and preposition calibration impeller successively.
4. the self-alignment bilobed wheel turbo flow meter of one according to claim 1, is characterized in that, described rearmounted detection impeller unit also comprises rear axle, rear bearing, and described rear axle runs through rearmounted detection impeller and rear bearing successively.
5. the self-alignment bilobed wheel turbo flow meter of one according to claim 4, is characterized in that, described rear axle is provided with signal wheel, and the top of described signal wheel is provided with input probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748829.XA CN104482968A (en) | 2014-12-09 | 2014-12-09 | Self-calibrating double-impeller turbine flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410748829.XA CN104482968A (en) | 2014-12-09 | 2014-12-09 | Self-calibrating double-impeller turbine flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104482968A true CN104482968A (en) | 2015-04-01 |
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| CN201410748829.XA Pending CN104482968A (en) | 2014-12-09 | 2014-12-09 | Self-calibrating double-impeller turbine flowmeter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387893A (en) * | 2015-12-11 | 2016-03-09 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flow meter and turbine flow meter |
| CN105424101A (en) * | 2015-12-10 | 2016-03-23 | 上海新跃仪表厂 | Combined type impeller for turbine flowmeter |
| CN114279511A (en) * | 2021-12-31 | 2022-04-05 | 安徽省锐凌计量器制造有限公司 | Double-impeller assembly for flowmeter and assembling method thereof |
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| CN104089661A (en) * | 2014-07-14 | 2014-10-08 | 重庆邮电大学 | Air flow meter |
| CN204313891U (en) * | 2014-12-09 | 2015-05-06 | 罗美特（上海）自动化仪表有限公司 | A kind of self-alignment bilobed wheel turbo flow meter |
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Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3608807A1 (en) * | 1986-03-15 | 1987-09-17 | Wolfgang Hopf | Position transmitter and its use |
| JPH08145743A (en) * | 1994-11-21 | 1996-06-07 | Kubota Corp | Turbine flowmeter |
| CN1553148A (en) * | 2003-12-19 | 2004-12-08 | 山西科达自控工程技术有限公司 | Self-generatnig fluid measuremeter |
| CN200952948Y (en) * | 2006-07-07 | 2007-09-26 | 潘春辉 | Runoutproof electronic watermeter |
| CN200989800Y (en) * | 2006-07-28 | 2007-12-12 | 浙江天信仪表有限公司 | Nonmagnetic detecting gas turbine flowmeter |
| CN201197912Y (en) * | 2008-05-28 | 2009-02-25 | 福州金源泉科技有限公司 | Functional water filter |
| CN201229191Y (en) * | 2008-07-25 | 2009-04-29 | 上海自仪九仪表有限公司 | Spiral flowmeter |
| DE102011106047A1 (en) * | 2011-06-30 | 2013-01-03 | Hengstler Gmbh | Digital consumption meter for e.g. gas, used in e.g. home, has permanent magnet that is rotatably connected to drive wheel in flow chamber, so that magnetic field in flow chamber acts on reed switches in drying/outer chamber |
| CN102425891A (en) * | 2011-10-21 | 2012-04-25 | 苏宇贵 | Heat pump system and flow measuring method thereof |
| CN104089661A (en) * | 2014-07-14 | 2014-10-08 | 重庆邮电大学 | Air flow meter |
| CN204313891U (en) * | 2014-12-09 | 2015-05-06 | 罗美特（上海）自动化仪表有限公司 | A kind of self-alignment bilobed wheel turbo flow meter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424101A (en) * | 2015-12-10 | 2016-03-23 | 上海新跃仪表厂 | Combined type impeller for turbine flowmeter |
| CN105424101B (en) * | 2015-12-10 | 2019-09-17 | 上海新跃仪表厂 | A kind of combination type blade wheel of turbine flowmeter |
| CN105387893A (en) * | 2015-12-11 | 2016-03-09 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flow meter and turbine flow meter |
| CN105387893B (en) * | 2015-12-11 | 2020-02-11 | 罗美特（上海）自动化仪表股份有限公司 | Impeller structure of turbine flowmeter and turbine flowmeter thereof |
| CN114279511A (en) * | 2021-12-31 | 2022-04-05 | 安徽省锐凌计量器制造有限公司 | Double-impeller assembly for flowmeter and assembling method thereof |
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Application publication date: 20150401 |