CN2932324Y - Double-cone flowmeter - Google Patents
Double-cone flowmeter Download PDFInfo
- Publication number
- CN2932324Y CN2932324Y CN 200620031019 CN200620031019U CN2932324Y CN 2932324 Y CN2932324 Y CN 2932324Y CN 200620031019 CN200620031019 CN 200620031019 CN 200620031019 U CN200620031019 U CN 200620031019U CN 2932324 Y CN2932324 Y CN 2932324Y
- Authority
- CN
- China
- Prior art keywords
- measuring tube
- biconial
- pressure tappings
- tappings
- negative pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides a double conical flowmeter in the field of fluid gauging practice comprising a measuring pipe (1) provided with a positive pressure pore (3), a negative pressure pore (4), and a double conical body (2) with cones of both ends and cylinder of intermediate section, the double conical body is supported by supporting unit, and positioned in and coaxial with the measuring pipe, the positive pressure pore (3) is positioned on the measuring pipe on the advanced position of the double conical body, and the negative pressure pore is positioned on the measuring pipe and relative to the cylinder of intermediate section of the double conical body. The double conical flowmeter of the utility model has the advantage that measurement accuracy is enhanced to achieve good repeatability, thereby guaranteeing stability of the measurement, and being suitable for measuring variety of soiled liquid.
Description
Technical field
The utility model belongs to the fluid measurement technology, mainly proposes a kind of biconial flowmeter.
Background technology
Differential pressure flowmeter is the flowmeter that a class is with a long history, consumption is maximum, it is a ultimate principle with Bernoulli's theorem and mobile continuity equation, flow through the poor of pressure that detecting element produces by the measuring channel inner fluid,, thereby try to achieve flow in conjunction with known fluid condition, pipeline condition.At present, the differential pressure flowmeter of industrial application mainly is based on orifice plate, nozzle, Venturi tube etc.Their ubiquities to the front and back flow development length require high, crushing is big, precision is low, measurement range degree (range ratio) is little, outflow system is unstable, shortcomings such as easily contamination, maintenance be big before and after the throttling element when surveying dirty fluid, has brought many troubles to its application.
The V-CONE shape flow that last century, the invention of the mid-80 U.S. McCrometer company was produced is taken into account the interior V bevel-type flowmeter that domestic manufacturer produces, and its structure is seen Fig. 9.It has overcome many shortcomings of above-mentioned traditional differential pressure flowmeter, and is approved widely and use.It can solve solid formation retention problems in the fluid, and its cone has rectified action, requires shorter and smaller to the upstream and downstream flow development length.But interior V bevel-type flowmeter adopts single armed suspension type structure, can't guarantee coaxial concentric structure, and there is resonance problems in discontinuity equalization when fluid flows through this structure when measuring.Its throat is the circumference sharp edge of a disc-like shape disk in addition, in use still can be because of the sharp edge wearing and tearing cause the efflux coefficient instability, and particularly when the dirty fluid of measurement especially contained the fluid of solid granule, this shortcoming was more obvious.Sharp edge also makes fluid producing whirlpool by taking place after the cone to separate, and still can bigger resistance be arranged convection cell, increases crushing.And the negative pressuren zone of gathering negative pressure signal is positioned in the turbulent region of facies cerebellaris pyramidis, and the signal of being gathered has fluctuation, and then influences its measuring accuracy.
Summary of the invention
The fundamental purpose that the utility model proposes the biconial flowmeter promptly is to improve its measuring accuracy and makes it have good repeatability.
Another purpose of the present utility model is to guarantee measuring stability, and makes it can be used for measuring various dirty fluids.
The utility model is finished the invention task by the following technical programs: it includes measuring tube and has positive pressure tappings and negative pressure tappings on measuring tube; Having two ends in measuring tube is that cone, middle part are cylindrical bipyramid body, and the bipyramid body supports and is positioned at by bracing or strutting arrangement in the measuring tube and be coaxial with measuring tube; Positive pressure tappings is positioned on the measuring tube of bipyramid body upstream, and negative pressure tappings is positioned on the measuring tube and the corresponding position of right cylinder, bipyramid body middle part.
The cylindrical equal diameters of maximum gauge and middle part of its front and back cone of bipyramid body, the tapering of precentrum is greater than the tapering of posterior pyramids.
The tapering of its precentrum of bipyramid body is 60 °～90 °, and the tapering of posterior pyramids is 7 °～30 °.
The bipyramid body wherein cylindrical axial length of portion is 0.5～2: 1 with its diameter ratio.
The utility model proposes the fluoran stream surface of its restricting element bipyramid body of biconial flowmeter and the conical surface throttling that lee side all adopts certain angle, flow rate of fluid and static pressure tend towards stability on the right cylinder of middle part, can collect the very high pressure signal of sensitivity at the negative pressure end place that is positioned on the mediate cylindrical, this just makes the utility model obtain very high measuring accuracy and has good repeatability; The posterior pyramids of bipyramid body can play the effect of similar Venturi tube afterbody diffuser, can make through the fluid that quickens and postpone deceleration supercharging with separating of tube wall at the passage of expansion gradually, reduce the size and the intensity in whirlpool district greatly, thereby farthest reduced resistance and crushing that fluid flows.The cylindrical throttling edge of the leading portion cone-shaped body of bipyramid body of the present utility model and middle part angle is the obtuse angle, can stand the impact of impurity in high-velocity fluid or the dirty fluid, thereby can guarantee that β value and efflux coefficient C value remain unchanged for a long period of time.Relatively the utlity model has Stability Analysis of Structures, not easy to wear, long-time stability good, measuring accuracy is high and crushing is little characteristics with existing biconial flowmeter.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of bipyramid body in the utility model.
Fig. 3 is a support device structure synoptic diagram in the utility model.
Fig. 4 is the right view of Fig. 3.
Fig. 5 is the synoptic diagram that bipyramid body one end supports in the utility model.
Fig. 6 is the utility model embodiment 2 structural representations.
Fig. 7 is the A-A sectional view of Fig. 6.
Fig. 8 is the utility model embodiment 3 structural representations.
Fig. 9 is existing inner cone flow meter structural representation.
Among the figure, 1, measuring tube, 2, the bipyramid body, 3, positive pressure tappings, 4, negative pressure tappings, 5, pressure mouth, 6, connection holes, 8, even pressure ring, 9, sewage draining exit, 10, back shaft, 11, Wing bracket, 12, the pressure flange, 13, precentrum, 14, right cylinder, 15, posterior pyramids.
Embodiment
The embodiment that provides is in conjunction with the accompanying drawings further specified the utility model:
As shown in Figure 1, have positive pressure tappings 3 and negative pressure tappings 4 on the measuring tube 1 of the present utility model, measuring tube 1 is used for by detected fluid, and its flange by mouth of pipe two ends is connected with on-the-spot pipeline (not marking among the figure), and the measuring tube internal diameter is identical with on-the-spot internal diameter of the pipeline; Bipyramid body 2 is positioned at measuring tube makes it coaxial with measuring tube 1 by the bracing or strutting arrangement support fixation; With reference to Fig. 2, bipyramid body 2 is by precentrum 13, middle part right cylinder 14 and posterior pyramids 15 constitute, three parts are structure as a whole, precentrum 13 and posterior pyramids 15 are the isosceles cone, the cylindrical equal diameters of maximum gauge and middle part of its front and back cone of bipyramid body, the tapering of precentrum 13 is greater than the tapering of posterior pyramids 15, the tapering α of precentrum 13 is 60 °～90 °, among this embodiment be 70 °, the tapering b of posterior pyramids 15 is 7 °～30 °, among this embodiment be 20 °, the axial length of middle part right cylinder 14 is 0.5～2: 1 with the ratio of its diameter, is 1: 1 among this embodiment.Positive pressure tappings 1 is 1, is positioned on the upstream measuring tube of bipyramid body 2, is used to gather the malleation signal of fluid in pipeline, and pressure mouth 5 is connected on the measuring tube by welding and is communicated with positive pressure tappings, is used for the malleation signal that collects is drawn out to differential pressure meter; Negative pressure tappings 4 be 1 its be positioned on the measuring tube and the pairing position of right cylinder, bipyramid body middle part; Among this embodiment, the axis of negative pressure tappings 4 passes in the middle of the right cylinder, and the distance of promptly negative pressure tappings axis and precentrum and right cylinder intersecting plane is 1/2 of a right cylinder axial length; 5 welding of pressure mouth are connected on the measuring tube and are communicated with negative pressure tappings, are used for the negative pressure signal that collects is drawn out to differential pressure meter.With reference to Fig. 3, Fig. 4, bracing or strutting arrangement is made of back shaft 10 and Wing bracket 11, back shaft 10 is structure as a whole with Wing bracket 11, back shaft 10 is in order to connect with biconial sports association, Wing bracket is in order to connect with measuring tube, thereby be fixedly supported in the measuring tube bipyramid body and the location, as shown in Figure 1, and with reference to Fig. 2, Fig. 3, Fig. 4, before the bipyramid body, the posterior pyramids tapering has all set connection holes 6, back shaft 10 is inserted connect with its formation, and Wing bracket is made up of the fin of a plurality of (among this embodiment being 4) circumference uniform distribution, fin enters and is positioned on the locating slot along the locating slot that sets on the measuring tube inwall, forms with measuring tube to connect.Two bracing or strutting arrangements are set among this embodiment, respectively the precentrum of bipyramid body and posterior pyramids and measuring tube are connected and fixed.Wing bracket is ignored so the interference of its fluid flow is minimum because its xsect relative measurement of fin Guan Eryan is very little.The bracing or strutting arrangement that Wing bracket that the utility model proposes and back shaft constitute has good stability, and stress equalization when fluid flows through resonance phenomena can not occur, and guarantees that the bipyramid body is coaxial with measuring tube.
With reference to Fig. 5, adopt a bracing or strutting arrangement, the back shaft 10 of bracing or strutting arrangement inserts with the posterior pyramids of bipyramid body and connects, Wing bracket enters by the locating slot that sets on the measuring tube inwall and is positioned on the locating slot, connect with measuring tube, thereby the bipyramid body is fixedly supported in the measuring tube and coaxial with measuring tube.Only connect support from the rear end to the bipyramid body, thus the corresponding increasing of fin width of Wing bracket, the back shaft enlarged diameter, to guarantee the stability of bipyramid body, this kind supporting way is mainly used in the flowmeter of medium and small caliber.
Fig. 6, Fig. 7 provide the another kind of example structure signal of the utility model.As shown in Figure 6, the agent structure of present embodiment is identical with a last embodiment, its different structure is: positive pressure tappings 3 is set to more than 2 or 2, a plurality of positive pressure tappings are circumference uniform distribution on measuring tube, their axis mutual angle equates, has the negative pressure tappings 4 more than 2 or 2, negative pressure tappings is circumference uniform distribution on measuring tube, their axis mutual angle equates, positive pressure tappings is positioned on the upstream measuring tube of bipyramid body, the axis of negative pressure tappings passes cylindrical centre, bipyramid body middle part, and promptly the axis of negative pressure tappings and the distance of precentrum and right cylinder intersecting plane are 1/2 of right cylinder axial length, and be identical with embodiment 1.Owing to set a plurality of positive pressure tappings and negative pressure tappings, corresponding positive pressure tappings and negative pressure tappings are provided with even pressure ring 8, the even pressure ring 8 that is connected on the measuring tube periphery is communicated with a plurality of positive pressure tappings 3, the pressure signal that is collected is drawn out to differential pressure meter from the pressure mouth of sparing on the pressure ring 85 after average in the even pressure ring, the even pressure ring structure that is communicated with a plurality of negative pressure tappings is identical with it.For clean, blowdown is convenient, also has sewage draining exit 9 on even pressure ring.Because even pressure ring connects all positive and negative pressure tappings, the pressure signal that is collected has reflected the pressure condition on the measuring channel entire cross section, therefore can further improve measuring accuracy, in addition when the measuring channel caliber is big, measuring channel inner fluid flow condition complexity adopts the multiple spot pressure can guarantee measuring accuracy.Present embodiment is mainly used in the flowmeter of big caliber and the occasion high to accuracy requirement.Referring to Fig. 7, be provided with 4 positive pressure tappings 3 and 4,4 positive pressure tappings circumference uniform distributions of 4 negative pressure tappings among this embodiment on measuring tube, its axis mutual angle equates, is connected by the even pressure ring 8 on the measuring tube periphery.The structure of even pressure ring as shown in Figure 7, it is the annulus in a band chamber, the cross section is a shape, and it is welded on the measuring tube outer tube wall and the corresponding position of pressure tappings, and all positive pressure tappings 3 (or negative pressure tappings 4) are communicated with, on even pressure ring, has pressure mouth 5, be used for the pressure signal in the even pressure ring is drawn out to differential pressure meter, for clean, blowdown is convenient, also has sewage draining exit 9 on the even pressure ring, sewage draining exit 9 is closed when flat, can open it when the cutout maintenance and clean dirt in the ring.Need to prove: when positive pressure tappings was 1, negative pressure tappings also can be more than 2 or 2, and positive pressure tappings is 2 or 2 when above, and negative pressure tappings also can be 1, and promptly the quantity of positive pressure tappings and the quantity of negative pressure tappings do not have corresponding relation.
As shown in Figure 8, this embodiment and embodiment illustrated in fig. 1 basic identical, difference is to connect on the periphery of measuring tube 1 and what be connected with pressure tappings is not the pressure mouth, but pressure flange, promptly welding is connected with the pressure flange 12 that communicates with positive pressure tappings on the measuring tube periphery, welding is connected with the pressure flange 12 that communicates with negative pressure tappings on the measuring tube periphery, the pressure signal that positive pressure tappings 3 and negative pressure tappings 4 collect is drawn out to differential pressure meter by pressure flange 12 respectively, this embodiment is mainly used in the measurement thickness, dirty, the liquid that contains suspended particle, pressure tappings diameter value is bigger, therefore adopt the pressure flange to connect, can avoid pressure tappings blocked and situation that influence is measured occurs.The pressure flange can adopt the integral (type) flange structure (it is the national standard product) that has connecting pipe, and connecting pipe connects with measuring tube and communicates with pressure tappings, and flange is used to connect differential pressure meter.
Claims (13)
1, a kind of biconial flowmeter includes measuring tube (1) and has positive pressure tappings (3) and negative pressure tappings (4) on measuring tube; It is characterized in that: having two ends in measuring tube (1) is that cone, middle part are cylindrical bipyramid body (2), and the bipyramid body supports and is positioned at by bracing or strutting arrangement in the measuring tube and be coaxial with measuring tube; Described positive pressure tappings (3) is positioned on the measuring tube of bipyramid body upstream, and described negative pressure tappings (4) is positioned on the measuring tube and the corresponding position of right cylinder, bipyramid body middle part.
2, biconial flowmeter according to claim 1 is characterized in that: the equal diameters of the maximum gauge of described its forward and backward cone of bipyramid body and middle part right cylinder (14), the tapering of precentrum (13) is greater than the tapering of posterior pyramids (15).
3, biconial flowmeter according to claim 1 and 2 is characterized in that: the tapering α of described its precentrum of bipyramid body (13) is 60 °～90 °.
4, biconial flowmeter according to claim 1 and 2 is characterized in that: the described bipyramid body tapering b of cone (15) thereafter is 7 °～30 °.
5, biconial flowmeter according to claim 1 is characterized in that: the described bipyramid body wherein ratio of axial length and its diameter of portion's right cylinder (14) is 0.5～2: 1.
6, biconial flowmeter according to claim 1, it is characterized in that: the axis of described negative pressure tappings (4) passes in the middle of the right cylinder of bipyramid body middle part, and promptly the axis of negative pressure tappings (4) and the distance of precentrum and right cylinder intersecting plane are 1/2 of right cylinder axial length.
7, biconial flowmeter according to claim 1, it is characterized in that: described bracing or strutting arrangement is made up of back shaft (10) and Wing bracket (11), back shaft (10) is structure as a whole with Wing bracket (11), back shaft (10) connects with biconial sports association, and Wing bracket (11) connects with measuring tube.
8, biconial flowmeter according to claim 1 is characterized in that: described positive pressure tappings (3) is 1, and positive pressure tappings is communicated with pressure mouth (5).
9, biconial flowmeter according to claim 1 is characterized in that: described negative pressure tappings (4) is 1, and negative pressure tappings is communicated with pressure mouth (5).
10, biconial flowmeter according to claim 1, it is characterized in that: described positive pressure tappings (3) is to be circumference uniform distribution more than 2 or 2 and on measuring tube, a plurality of positive pressure tappings are interconnected by the even pressure ring (8) that is connected on the measuring tube periphery, and even pressure ring (8) is provided with pressure mouth (5).
11, biconial flowmeter according to claim 1, it is characterized in that: described negative pressure tappings (4) is to be circumference uniform distribution more than 2 or 2 and on measuring tube, a plurality of negative pressure tappings are interconnected by the even pressure ring (8) that is connected on the measuring tube periphery, and even pressure ring (8) is provided with pressure mouth (5).
12, biconial flowmeter according to claim 1, it is characterized in that: described positive pressure tappings (3) and negative pressure tappings (4) are 1, positive pressure tappings is communicated with the pressure flange (12) that is connected on the measuring tube periphery, and negative pressure tappings is communicated with the pressure flange (12) that is connected on the measuring tube periphery.
13, according to claim 10 or 11 described biconial flowmeters, it is characterized in that: described even pressure ring (8) is provided with sewage draining exit (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620031019 CN2932324Y (en) | 2006-08-03 | 2006-08-03 | Double-cone flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620031019 CN2932324Y (en) | 2006-08-03 | 2006-08-03 | Double-cone flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2932324Y true CN2932324Y (en) | 2007-08-08 |
Family
ID=38348822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620031019 Expired - Fee Related CN2932324Y (en) | 2006-08-03 | 2006-08-03 | Double-cone flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2932324Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105207A (en) * | 2012-12-31 | 2013-05-15 | 中国人民解放军国防科学技术大学 | Inner cone flow meter |
| CN103511025A (en) * | 2012-06-26 | 2014-01-15 | 福特环球技术公司 | Crankcase ventilation and vacuum generation |
| CN110926547A (en) * | 2019-12-03 | 2020-03-27 | 杭州鸿鹄电子科技有限公司 | Double-cone differential pressure type flowmeter and control method |
-
2006
- 2006-08-03 CN CN 200620031019 patent/CN2932324Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511025A (en) * | 2012-06-26 | 2014-01-15 | 福特环球技术公司 | Crankcase ventilation and vacuum generation |
| CN103511025B (en) * | 2012-06-26 | 2017-12-26 | 福特环球技术公司 | A kind of method caused by the crankcase ventilation and vacuum of engine |
| CN103105207A (en) * | 2012-12-31 | 2013-05-15 | 中国人民解放军国防科学技术大学 | Inner cone flow meter |
| CN110926547A (en) * | 2019-12-03 | 2020-03-27 | 杭州鸿鹄电子科技有限公司 | Double-cone differential pressure type flowmeter and control method |
| CN110926547B (en) * | 2019-12-03 | 2021-03-23 | 杭州鸿鹄电子科技有限公司 | Double-cone differential pressure type flowmeter and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100416233C (en) | Measuring method and its device for external leading sampling of pipeline gas flow | |
| CN2932324Y (en) | Double-cone flowmeter | |
| CN201622085U (en) | Novel built-in double Venturi tube assembly | |
| CN105181038A (en) | Throttling device and throttling flowmeter | |
| CN213180156U (en) | Novel balanced differential pressure type flowmeter | |
| CN107907168A (en) | Flow measurement device and system with choke preventing function | |
| CN201007662Y (en) | Wenke conical flowmeter | |
| CN210774193U (en) | Low-resistance large-flow throttling flowmeter | |
| CN201016759Y (en) | Plug-in combined type multi-point orifice throttling device | |
| CN102928028A (en) | Full-symmetry double-cone flowmeter | |
| CN102012331B (en) | Gas and pressure measuring method with anti-clogging function for gas measurement | |
| CN202869559U (en) | Holosymmetry bipyramid flow meter | |
| CN205079804U (en) | Throttling arrangement and throttling flow meter | |
| CN208704808U (en) | The dedicated Cone Flowmeter of coal gas | |
| CN201607252U (en) | Flow meter of Ploba speed uniform tube | |
| CN2689181Y (en) | Internal gyroscopic flow measuring shutoff apparatus | |
| CN104236642A (en) | Novel flowmeter with middle-through-hole movable throttling element | |
| CN201000344Y (en) | Insert differential pressure measurement device | |
| CN207610734U (en) | Flow measurement device with choke preventing function and system | |
| CN207832251U (en) | A kind of flow detection instrument for hydraulic system | |
| CN207866297U (en) | A kind of intelligent pipeline fluid flow detection equipment | |
| CN205843733U (en) | A kind of fluid measurement instrument | |
| CN209706872U (en) | A kind of streamlined self-rectifying energy-saving appliance of spindle | |
| CN201653465U (en) | V-shaped conical flowmeter | |
| CN105115549A (en) | Large-diameter multi-throat flow meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070808 Termination date: 20100803 |