CN2546854Y - Intelligent Venturi turbine flowmeter - Google Patents
Intelligent Venturi turbine flowmeter Download PDFInfo
- Publication number
- CN2546854Y CN2546854Y CN 02237706 CN02237706U CN2546854Y CN 2546854 Y CN2546854 Y CN 2546854Y CN 02237706 CN02237706 CN 02237706 CN 02237706 U CN02237706 U CN 02237706U CN 2546854 Y CN2546854 Y CN 2546854Y
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- pipe
- diameter
- flow meter
- nominal diameter
- venturi
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- Expired - Lifetime
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- 238000005259 measurement Methods 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 11
- 239000007788 liquid Substances 0.000 description 7
- 238000011161 development Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to an intelligent venturi turbine flow meter, which is composed of a display processor, a lever assembly, a sensor assembly, an impeller assembly, and a shell, wherein the runner pipe adopts venture runner pipe, the inner pipe of the shell is a straight pipe segment at middle impeller, two sides of the straight pipe segment are symmetric or non-symmetric tapered pipe, the front flow guide body is a tapered pipe, the length L of the straight pipe segment is equal to 0.5-4 times nominal diameter, the diameter d of the middle straight pipe segment is equal to 0.3-0.9 times nominal diameter DN and also may equal to the nominal diameter of the other small specification; the range of tapered angle of tapered pipes at two sides is 5 to 50 degrees, the diameter of the max end of the tapered pipe is equal to the nominal diameter DN of the turbine flow meter. The design of the utility model overcomes the disadvantages that the small flow is difficult to be measured and the measurement range is narrow, and the length of the front and rear straight pipes after the flow meter is installed is lowered, thereby bringing convenience for manufactory so as to meet various application requirements of different users.
Description
One. technical field
This novel establishing and a kind of flowmeter, particularly a kind of turbo flow meter.
Two. background technology
Because the self structure of turbo flow meter and material are in continuous improvement, at metering field, positive displacement instrument that dominates in the past and mass flowmeter constantly are subjected to the strong challenge of turbo flow meter, and have progressively replaced expensive positive displacement instrument and mass flowmeter at the every field turbo flow meter of industry and production.
The turbo flow meter that uses is mainly kinds such as gas turbine meter and liquid turbine flowmeter at present, as Fig. 1, Figure 2 shows that the gas turbine meter synoptic diagram, it is by housing 1`, impeller assembly 2`, magnetic induction sensor assembly 3, link assembly 4, pressure sensor assembly 5, coupling head assembly 6, video-stream processor 7, temperature sensor 8 compositions such as grade, wherein the structure of impeller assembly 2` is by preceding baffle 9, O RunddichtringO 10, nut 11, impeller 12, pin 13, back baffle 14, lining 15, screw 16, nut 17, bearing 18, pin 19, cover 20, bearing holder (housing, cover) 21, swivel nut 22, main shaft 23, nut 24 compositions such as grade, the runner pipe of turbo flow meter is the normal straight tube runner pipe, and runner pipe is by preceding baffle 9, back baffle 14, pipe 40 is formed in the housing 1; Because the metering of all flowmeters all is the size of metered flow in specialized range, general gas turbine meter measurement range is 1---18m/s, the measurement range of measuring the turbo flow meter of liquid is 0.6---7m/s, measurement range is general, and to require between 1.3 times of minimum flow to maximum flow 0.8 times be perfect condition, in order to guarantee accurate measurement, the front and back length of straight pipe when turbo flow meter is installed requires for 5DN with more than the 3DN (DN is the flowmeter nominal diameter) respectively simultaneously.Above-mentioned requirements for long-term work at the flow measurement lower limit, and super lower limit use and can not satisfy install before and after the user of flow development length, obviously use conventional turbo flow meter, can cause the metering difficulty, and can not satisfy customer requirements.
Three. summary of the invention
Originally novel purpose is, designs a kind of novel turbo flow meter, reduces the flowmeter survey lower limit, widens the flow measurement weight range, shortens turbo flow meter front and back length of straight pipe when installing, to satisfy the request for utilization of different user.
This novel turbine flow is counted intelligent venturi turbo flow meter, concrete structure is the runner pipe employing venturi runner pipe with turbo flow meter, the interior pipe that is housing is a straight length at middle impeller place, the straight length both sides are symmetry or asymmetrical Taper Pipe, preceding baffle is a Taper Pipe, wherein the diameter of straight length be nominal diameter DN 0.3-----0.9 doubly, also can be the nominal diameter DN of another small dimension; The flow development length L at impeller place is 0.5----4 a times of nominal diameter DN, and the cone angle scope of two ends Taper Pipe is 5 °----50 °, and the maximum end diameter of Taper Pipe is the nominal diameter DN of turbo flow meter.
Adopt this structure, improved the flowing velocity of impeller place medium, make impeller under littler rate-of flow, also can rotate stably, the flowmeter survey lower limit diminishes, length of straight pipe before and after when having shortened the flowmeter installation simultaneously, the front and back length of straight pipe when adopting the venturi turbo flow meter to install drops to 3DN and 1DN respectively.The measurement range of the gas turbine meter after the improvement is 0.5---17m/s, when customer requirements is more prescribed a time limit under the low discharge, can reach 0.2m/s, range ratio can be brought up to 30: 1 by original 20: 1, the measurement range 0.4---7m/s of the liquid turbine flowmeter after the improvement, more prescribe a time limit under the low discharge when customer requirements, can reach 0.2m/s, range ratio can be brought up to 15: 1 by original 10: 1.The design of this new structure overcome to low discharge be difficult to metering and range ratio narrow, and shortcoming such as straight tube length before and after requiring when installing has been brought convenience to manufacturing enterprise, has satisfied the various different request for utilizations of different user.
Four. description of drawings
Fig. 1 is the prior art structural drawing
Fig. 2 is Fig. 1 impeller assembly structural drawing
Fig. 3 is this new embodiment one: venturi gas turbine meter structural drawing
Fig. 4 is Fig. 3 impeller assembly structural drawing
Fig. 5 is this novel another embodiment: venturi liquid turbine flowmeter structural drawing
Five. embodiment
This novel improvement for turbo flow meter is at runner pipe mainly, is that the turbo flow meter of which kind of form all changes common straight tube runner pipe into the venturi runner pipe.The interior pipe impeller place that is housing is a straight length, and both sides are symmetry or asymmetrical Taper Pipe, and preceding baffle is a Taper Pipe.
As shown in Figure 3, gas turbine meter is made up of video-stream processor 7, temperature sensor assembly 8, pressure sensor assembly 5, coupling head assembly 6, link assembly 4, magnetic induction sensor 3, impeller assembly 2, housing 1 etc.The runner pipe of turbo flow meter adopts the venturi runner pipe, the impeller place is a straight length promptly, both sides are symmetry or asymmetrical Taper Pipe, the length L of straight length is 0.5---4 a times of nominal diameter DN, wherein the diameter d of straight length be nominal diameter DN 0.3-----0.9 doubly, also can be the nominal diameter of another small dimension, when nominal diameter DN is the then optional 50mm of d of 65mm; The cone angle scope of both sides Taper Pipe is 5 °----50 °, and the maximum end diameter of Taper Pipe is the nominal diameter DN of flowmeter; Nominal diameter DN is identical with straight tube runner pipe diameter in the prior art.
Fig. 4 is the impeller assembly structural drawing of Fig. 3, it is by preceding baffle 25, nut 26, impeller 27, pin 28, back baffle 29, lining 30, screw 31, nut 32, bearing 33, pin 34, cover 35, bearing holder (housing, cover) 36, swivel nut 37, main shaft 38, nut 39 compositions such as grade, wherein preceding baffle 25 is a Taper Pipe as shown in Figure 4, pipe 41 is a straight length at middle impeller place in the housing, the straight length both sides are Taper Pipe, cone angle is 5----50, earlier main shaft 38 is penetrated in impeller 27 axis holes during assembling, with pin 28 and 26 fixing assemblies tightly of nut, on main shaft 38, put lining 30 then, nut 32, bearing 33, cover 35, bearing holder (housing, cover) 36, another bearing holder (housing, cover), load onto two nuts, and mounting screw 31; The pin 34 of packing on the baffle 29 in the back is inserted in the parts such as impeller spindle that install in the baffle 29 of back more together, and the swivel nut 37 of then packing into is tightened with nut 39.On back baffle 29, bearing holder (housing, cover) 36, cover 35, can respectively process oil hole 42 in addition, be used for regularly in bearing, injecting lubricating oil, the serviceable life of improving bearing.Preceding baffle 25 1 ends are fixed on the housing with end cap, and the other end is threaded with back baffle 29 usefulness.Preceding baffle is an axial restraint with the back baffle, and runner pipe is combined into the venturi runner pipe by the interior pipe 41 on preceding baffle 25, back baffle 29, the housing 1.
When detected fluid is flowed through flowmeter, because runner pipe adopts the venturi runner pipe, the diameter d of its straight length is littler than nominal diameter DN, has improved impeller place media flow speed, impeller also can rotate under littler rate-of flow reposefully, thereby can detect the more low discharge of medium.
The diameter d of straight length can be slightly less than the diameter d ' 1mm-10mm of impeller place.
Be comparison below to typical turbine flowmeter and venturi turbo flow meter:
Nominal diameter DN among Fig. 3 is got 100mm, and flow development length L gets 115mm, when cone angle is got 15 °.
Process contrast test (each one of the DN100 gas turbine meter before and after the employing improvement):
The raw-gas turbo flow meter
Measurement range (medium: air): 30---600m/h
Range ratio: 20: 1 degree of accuracy :+0.9%
Adopt the intelligent venturi gas turbine meter of this new structure
Measurement range (medium: air): 16----500m/h
Range ratio: 31: 1 degree of accuracy :+0.76%
The venturi runner pipe structure of this novel employing can be suitable for various turbo flow meters, comprises all gases turbo flow meter, liquid turbine flowmeter, not with the intelligent gas turbo flow meter of temperature and pressure compensation and split type turbo flow meter etc.
Fig. 5 is the another kind of version of venturi turbo flow meter, the venturi liquid turbine flowmeter, its measuring media is a liquid, the design of this new structure overcome to low discharge be difficult to the metering and range ratio narrow, and shortcoming such as straight tube segment length before and after requiring when installing, bring convenience to manufacturing enterprise, satisfied the various different request for utilizations of different user.
Form by housing 1, impeller assembly 2, magnetic induction sensor assembly 3, link assembly 4, video-stream processor 7 etc.
Claims (2)
1. intelligent venturi turbo flow meter, form by video-stream processor, link assembly, sensor module, impeller assembly, housing etc., it is characterized in that: runner pipe adopts the venturi runner pipe, the interior pipe of housing is a straight length at middle impeller place, the straight length both sides are symmetry or asymmetrical Taper Pipe, preceding baffle is a Taper Pipe, the length L of straight length is 0.5---4 a times of nominal diameter DN, wherein the diameter d of straight length be nominal diameter DN 0.3-----0.9 doubly, also can be the nominal diameter of another small dimension; The cone angle scope of both sides Taper Pipe is 5 °----50 °, and the maximum end diameter of Taper Pipe is the nominal diameter DN of turbo flow meter.
2. according to the venturi turbo flow meter shown in the claim 1, it is characterized in that: the diameter d of straight length can be slightly less than the diameter d ' 1mm-10mm of impeller place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237706 CN2546854Y (en) | 2002-06-28 | 2002-06-28 | Intelligent Venturi turbine flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237706 CN2546854Y (en) | 2002-06-28 | 2002-06-28 | Intelligent Venturi turbine flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2546854Y true CN2546854Y (en) | 2003-04-23 |
Family
ID=33711601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02237706 Expired - Lifetime CN2546854Y (en) | 2002-06-28 | 2002-06-28 | Intelligent Venturi turbine flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2546854Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387938C (en) * | 2005-08-02 | 2008-05-14 | 中国人民解放军总后勤部油料研究所 | Adapting form turbine flowmeter for flux measurement of oil transportation pipelines |
| CN101135623B (en) * | 2006-08-31 | 2010-12-29 | 华南理工大学 | Turbine type liquid viscosity coefficient early warning device |
| CN104568029A (en) * | 2014-12-09 | 2015-04-29 | 宁波图兰多电器有限公司 | Electronic flow meter |
| CN105157762A (en) * | 2015-07-13 | 2015-12-16 | 成都国光电子仪表有限责任公司 | Turbo type flow meter |
| CN108303147A (en) * | 2018-03-07 | 2018-07-20 | 合肥云峰信息科技有限公司 | A kind of intelligent pipeline fluid flow detection equipment |
-
2002
- 2002-06-28 CN CN 02237706 patent/CN2546854Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387938C (en) * | 2005-08-02 | 2008-05-14 | 中国人民解放军总后勤部油料研究所 | Adapting form turbine flowmeter for flux measurement of oil transportation pipelines |
| CN101135623B (en) * | 2006-08-31 | 2010-12-29 | 华南理工大学 | Turbine type liquid viscosity coefficient early warning device |
| CN104568029A (en) * | 2014-12-09 | 2015-04-29 | 宁波图兰多电器有限公司 | Electronic flow meter |
| CN105157762A (en) * | 2015-07-13 | 2015-12-16 | 成都国光电子仪表有限责任公司 | Turbo type flow meter |
| CN108303147A (en) * | 2018-03-07 | 2018-07-20 | 合肥云峰信息科技有限公司 | A kind of intelligent pipeline fluid flow detection equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Patentee address after: 201707, Shanghai Qingpu Industrial Park, 575 new water channel Shanghai starry sky Automatic Instrument Co., Ltd. Patentee address before: 200070, Yongxing, Shanghai, 12 small road, Kai International Building, 6A, Shanghai starry sky Instrument Factory |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120628 Granted publication date: 20030423 |