CN101191737A - Tube flow gauge - Google Patents
Tube flow gauge Download PDFInfo
- Publication number
- CN101191737A CN101191737A CNA2006101187114A CN200610118711A CN101191737A CN 101191737 A CN101191737 A CN 101191737A CN A2006101187114 A CNA2006101187114 A CN A2006101187114A CN 200610118711 A CN200610118711 A CN 200610118711A CN 101191737 A CN101191737 A CN 101191737A
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- pressure
- guide pipe
- tube
- pipe
- flow meter
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Abstract
The invention relates to a guide pipe flow meter, which, according to the form, falls into three types: a whole type guide pipe flow meter, a built-in guide pipe flow meter and an external guide pipe flow meter based on the type, wherein the whole type guide pipe flow meter comprises a guide pipe, a guide pressure pipe and a gauge head(converter); the built-in guide pipe flow meter and the external guide pipe flow meter comprise a measure pine, a guide pipe, a guide pressure pipe and a gauge head(converter) respectively; the position on the guide pipe, which has corner with a certain angle and right faces the speed direction of the measuring fluid is provided with an outlet by which the sum(total pressure) of the static pressure and dynamical pressure of the measuring fluid in the guide pipe is measured; a side surface along the speed direction of the measuring fluid is provided with another outlet by which the static pressure of the measuring fluid in the guide pipe is measured. The two outlets are guided to corresponding pressure sensors in the gauge head respectively (or guided to the high pressure side and the low pressure side of a differential pressure sensor), and then the flow rate signals can be converted into through the comparison operation amplification circuit and the single chip machine, etc.
Description
Affiliated technical field
Patent of the present invention relates to a kind of flowmeter, particularly a kind of tube flow gauge.
Background technology
The miscellaneous various flowmeters that existing market exists respectively have oneself merits and demerits.But it is higher that flowmeter can possess degree of accuracy simultaneously, and the measuring media applied range is measured flow range degree broad, and the pressure loss is little, and advantage such as not being subject to disturb, the response time is fast is unusual difficulty, the deficiency in the flow meter applications that Here it is.
Summary of the invention
In order to overcome the deficiency of existing flowmeter, patent of the present invention provides a kind of tube flow gauge, preferably resolves the deficiency in the flow meter applications.
Patent of the present invention solves the technical scheme that its technical matters adopts: tube flow gauge is provided, can divides three classes by form, monolithic devices tube flow gauge, built-in tube flow gauge, external tube flow gauge.Existing division is as follows: the monolithic devices tube flow gauge, and comprise and lead the shape pipe, pressure guiding pipe (two, but the interior static pressure of measuring tube, but the interior stagnation pressure of another root measuring tube), gauge outfit (being converter).It is characterized in that leading the shape pipe and have certain channeling direction effect, its body has at least a place or many places to turn by necessarily required angle, and its cross section is circle or symmetrical polygonal conduit.Can divide the front portion, center section, rear portion..Anterior for leading the straight length of shape pipe lead-in portion front, the rear portion is to lead the straight length that the shape pipe is derived the part back, is center section between the two.As the detected fluid of speed v flow through and lead shape when pipe (this type of flowmeter its lead the shape pipe itself be measuring tube), its flow velocity direction just with lead the shape tube side to consistent, leading the shape pipe by certain angle turning (optional 90 degree of general angle, being convenient to the parameter formula calculates) the position, have two outlets and can measure its pressure of position separately by pressure guiding pipe again, the one outlet is over against the velocity reversal of detected fluid, owing to lead the turning of shape pipe, so the kinetic energy of direction changes dynamic pressure into, thus tested be the system's static pressure and the dynamic pressure sum (being stagnation pressure) of detected fluid in the pipe.Speed is big more, and the relative conditon downforce is also big more, and both have certain proportionate relationship by law of conservation of energy, and another outlet can be surveyed the static pressure of detected fluid in the pipe from the side pressure of the velocity reversal of detected fluid.So the difference of the pressure of two outlets and flow velocity just have the certain proportion relation.Two outlets are guided pressure transducer separately (or guiding the high-low pressure both sides of differential pressure pick-up into) in the gauge outfit into by pressure guiding pipe, promptly are convertible into flow signal by circuit such as comparison operation amplifying circuit and single-chip microcomputers again.
Built-in tube flow gauge comprises measuring tube, leads the shape pipe, pressure guiding pipe (two, but the interior static pressure of measuring tube, but the interior stagnation pressure of another root measuring tube), gauge outfit (being converter).It is characterized in that leading the shape pipe and fixedly be built in measuring tube, its front portion is in coaxial position, measuring tube center, and over against the flow velocity direction, the front and rear portions direction is all parallel with measuring tube.When the detected fluid of speed v is flowed through measuring tube, lead the anterior cross section of shape pipe and intercept the fluid of a part of area and in leading the shape pipe, flow, its flow velocity direction with regard to lead the shape tube side to consistent, its principle is just identical with the monolithic devices tube flow gauge like this.By rate of flow of fluids whole in the flow velocity of intercepting segment fluid flow and the measuring tube proportionate relationship of certain rule is arranged, so be convertible into the flow signal of integral body again by the correction of the interior computing parameter of gauge outfit (being converter).
The external tube flow gauge comprises measuring tube, leads the shape pipe, pressure guiding pipe (two, but the interior static pressure of measuring tube, but the interior stagnation pressure of another root measuring tube), gauge outfit (being converter).It is characterized in that leading the shape tube portion and fixedly be placed on measuring tube, its front and rear part is hidden in the measuring tube, and parallel with the measuring tube direction, and center section passes measuring tube and pierces into measuring tube again through a segment length parallel with the measuring tube direction again.Its front portion is over against the flow velocity direction, and the front and rear part direction is parallel with measuring tube and point-blank.When the detected fluid of speed v is flowed through measuring tube, lead the anterior cross section of shape pipe and intercept the fluid of a part of area and in leading the shape pipe, flow, its flow velocity direction with regard to lead the shape tube side to consistent, its principle is just identical with the monolithic devices tube flow gauge like this.By rate of flow of fluids whole in the flow velocity of intercepting segment fluid flow and the measuring tube proportionate relationship of certain rule is arranged, so be convertible into the flow signal of integral body again by the correction of the interior computing parameter of gauge outfit (being converter).
The beneficial effect of patent of the present invention is, it is higher that tube flow gauge can possess degree of accuracy simultaneously, and the measuring media applied range is measured flow range degree broad, and the pressure loss is little, is not subject to disturb, the response time is fast, low cost and other advantages.
Description of drawings
Below in conjunction with drawings and Examples patent of the present invention is elaborated.(with the monolithic devices tube flow gauge is example, and built-in and external tube flow gauge can be analogized)
Accompanying drawing 1 is the monolithic devices tube flow gauge one-piece construction longitudinal profile synoptic diagram of patent of the present invention
Accompanying drawing 2 is the external tube flow gauge one-piece construction longitudinal profile synoptic diagram of patent of the present invention
Accompanying drawing 3 is the built-in tube flow gauge one-piece construction longitudinal profile synoptic diagram of patent of the present invention
Embodiment
Comprise among Fig. 1 and lead shape pipe 1, stagnation pressure in pressure guiding pipe 2 (a) measuring tube, static pressure in pressure guiding pipe 2 (b) measuring tube, gauge outfit (being converter) 3, flow through to lead in the shape pipe 1 and when detected fluid and move by its direction, over against the velocity reversal of detected fluid by stagnation pressure in pressure guiding pipe 2 (a) measuring tube, pass through static pressure in pressure guiding pipe 2 (b) measuring tube in side from the velocity reversal of detected fluid.Static pressure and stagnation pressure are guided gauge outfit 3 into by two pressure guiding pipes like this.
Claims (3)
1. tube flow gauge can divide three classes by form, and the monolithic devices tube flow gauge comprises and leads shape pipe, pressure guiding pipe, gauge outfit (being converter).Built-in tube flow gauge and external tube flow gauge comprise measuring tube, lead the shape pipe, pressure guiding pipe, gauge outfit (being converter).It is characterized in that leading the shape pipe and have certain channeling direction effect, its body has at least a place or many places to turn by necessarily required angle, and its cross section is circle or symmetrical polygonal conduit.Can divide the front portion, center section, rear portion..Anterior for leading the straight length of shape pipe lead-in portion front, the rear portion is to lead the straight length that the shape pipe is derived the part back, is center section between the two.
2. tube flow gauge according to claim 1, it is characterized in that: leading the position that the shape pipe is turned by certain angle, the velocity reversal over against detected fluid have an outlet by the pressure guiding pipe measuring tube in the static pressure and the dynamic pressure sum (being stagnation pressure) of detected fluid.Have the static pressure of detected fluid in another outlet measuring tube from the side of the velocity reversal of detected fluid.
3. tube flow gauge according to claim 1, it is characterized in that: lead two outlets of shape pipe and guide pressure transducer separately (or guiding the high-low pressure both sides of differential pressure pick-up into) in the gauge outfit into, promptly be convertible into flow signal by circuit such as comparison operation amplifying circuit and single-chip microcomputers again by pressure guiding pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101187114A CN101191737A (en) | 2006-11-24 | 2006-11-24 | Tube flow gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101187114A CN101191737A (en) | 2006-11-24 | 2006-11-24 | Tube flow gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101191737A true CN101191737A (en) | 2008-06-04 |
Family
ID=39486872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101187114A Pending CN101191737A (en) | 2006-11-24 | 2006-11-24 | Tube flow gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101191737A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013044690A1 (en) * | 2011-09-29 | 2013-04-04 | 伊玛精密电子（苏州）有限公司 | Electromagnetic flow sensor |
| CN104568026A (en) * | 2015-01-28 | 2015-04-29 | 唐山现代工控技术有限公司 | Final-stage channel flow measuring method and device |
| CN114113663A (en) * | 2021-11-24 | 2022-03-01 | 上海航天设备制造总厂有限公司 | Detection device for flow velocity measurement and flow field monitoring |
-
2006
- 2006-11-24 CN CNA2006101187114A patent/CN101191737A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013044690A1 (en) * | 2011-09-29 | 2013-04-04 | 伊玛精密电子（苏州）有限公司 | Electromagnetic flow sensor |
| CN104568026A (en) * | 2015-01-28 | 2015-04-29 | 唐山现代工控技术有限公司 | Final-stage channel flow measuring method and device |
| CN114113663A (en) * | 2021-11-24 | 2022-03-01 | 上海航天设备制造总厂有限公司 | Detection device for flow velocity measurement and flow field monitoring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080604 |