CN2821534Y - V-cone flow meter - Google Patents
V-cone flow meter Download PDFInfo
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- CN2821534Y CN2821534Y CN 200520075794 CN200520075794U CN2821534Y CN 2821534 Y CN2821534 Y CN 2821534Y CN 200520075794 CN200520075794 CN 200520075794 CN 200520075794 U CN200520075794 U CN 200520075794U CN 2821534 Y CN2821534 Y CN 2821534Y
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- cone
- measuring tube
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Abstract
The utility model relates to a differential pressure flow meter, particularly to a V-cone flow meter. The v-cone flow meter comprises a positive pressure tapping spout, a negative pressure tapping spout, a measuring tube, and a V-cone component which is fixed in the measuring tube and is coaxial with the measuring tube, wherein the V-cone component comprises a supporter connected with a V-cone body. The maximum diameter point of the V-cone body is an acute angle edge; the included angle alpha between the front cones of the V-cone body is 45 DEG +-1 DEG, and the included angle beta between the rear cones is 135 DEG +-1 DEG; the sharpness t of the acute angle is not less than 0.002 dv and is not larger than 0.003 dv. The roughness of the front cone of the V-cone body is the same with the roughness of the cylindrical surface with dv size and is arranged as R1; the value of R1 is changed along with the internal diameter DN of a measuring tube. The roughness of the rear cone is arranged as R2, and the value of R2 is one level smaller than the value of R1. The structural size of the V-cone body is regulated to make the standardization and the normalization of the V-cone flow meter possible, and thus, the measuring accuracy of structural size is enhanced. The utility model is favorable to the popularization and the application of the V-cone flow meter.
Description
Technical field
The utility model relates to a kind of differential pressure flowmeter, relates in particular to a kind of V cone flow meter.
Background technology
The V cone flow meter of prior art comprises malleation pressure mouth, negative pressure pressure mouth, measuring tube, at the measuring tube internal fixation V-type cone assembly coaxial with it is arranged, the V-type cone assembly comprise respectively with measuring tube on the stay pipe that is connected with the V-type cone of negative pressure pressure mouth, negative pressure pressure pipe in stay pipe and the V-type cone is connected, on the V-type cone, be provided with the bracing frame of two ends arm, one sharp edge arranged at the maximum gauge place of V-type cone.But, cause measurement stability to be difficult to guarantee that for example producer generally gets between 40 °～50 ° the inner cone angle a of cone because each manufacturer's standard disunity is not generally paid attention to the cone structure dimensional requirement; Rear cone angle β generally gets between 130 °～140 °; Conical surface roughness is random big; Critical size cone full-size dv, form by the inner cone of cone and the joint of rear cone, but general producer is not rigorous to the sharp keen degree requirement of the acute angle of cone, be the subject matter of this class V cone flow meter existence now, and the key that the dv influence is measured has 3 points: 1, dimensional accuracy; 2, acute angle sharpness; 3, roughness.Sharpness, the roughness only paying attention to dimensional accuracy and ignore acute angle are the main causes that influences measuring accuracy.Though each producer all is that cone structure is different, can't realize standardized production according to V-arrangement awl Throttle Principle, brings many difficulties for the popularization of V cone flow meter.
Summary of the invention
The V cone flow meter that provides a kind of physical dimension to strictly regulate is provided the purpose of this utility model, the standardization of V cone flow meter is produced become a reality, and helps the popularization and the application of V cone flow meter.
For achieving the above object, the utility model adopts a kind of V cone flow meter, comprise malleation pressure mouth, negative pressure pressure mouth, measuring tube, the V-type cone assembly coaxial with it arranged at the measuring tube internal fixation, the V-type cone assembly comprises the bracing frame that is connected with the V-type cone, at the maximum gauge place of V-type cone is sharp edge, angle a between the inner cone of V-type cone gets 45 ° ± 1 °, and the angle β between the rear cone gets 135 ° ± 1 °; The acute angle sharpness t of V-type cone is not less than 0.002dv, is not more than 0.003dv; The inner cone roughness of V-type cone and the identical R1 that is made as of dv size face of cylinder roughness, the R1 value changes with measuring tube inside diameter D N, and the rear cone roughness is made as R2, and the R2 value is than the little one-level of R1 value.
The utility model further is set to when measuring tube inside diameter D N＜50mm, R1=1.6; When measuring tube inside diameter D N 〉=50mm, R
1=3.2; When measuring tube inside diameter D N 〉=150mm, R
1=6.3; When measuring tube inside diameter D N 〉=300mm, R
1=12.5; When measuring tube inside diameter D N 〉=500mm, to R
1Value does not have harsh especially requirement.
Utility model is got 45 ° ± 1 ° to the angle a between the inner cone of V-type cone by the improvement to the V cone flow meter, and the angle β between the rear cone gets 135 ° ± 1 °; The acute angle sharpness t of V-type cone is not less than 0.002dv, is not more than 0.003dv; The inner cone roughness of V-type cone and the identical R1 that is made as of dv size face of cylinder roughness, the R1 value changes with measuring tube inside diameter D N, and the rear cone roughness is made as R2, and the R2 value is than the little one-level of R1 value.To determining of these data, be to draw by long-term experiment, be comparison rational structure size, with the physical dimension standardization of V cone flow meter, improved the measuring accuracy of physical dimension, help the popularization and the application of V cone flow meter.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Fig. 3 is the structural representation of the utility model embodiment 3.
Fig. 4 is the structural representation of the utility model embodiment 4.
Fig. 5 is the structural representation of the V-type cone of the utility model embodiment.
Fig. 6 is that the A of Fig. 5 is to enlarged drawing.
Embodiment
As shown in the figure, specific embodiment of the utility model 1 is the V cone flow meter of the formula of clamping, comprise malleation pressure mouth 1, negative pressure pressure mouth 2, measuring tube 3, the V-type cone assembly 4 coaxial with it arranged at measuring tube 3 internal fixation, V-type cone assembly 4 comprises V-type cone 41 and bracing frame 42, at the maximum gauge place of V-type cone 41 is sharp edge, the rear cone of V-type cone 41 is fixedlyed connected with bracing frame 42, and the two ends up and down of bracing frame 42 are fixed in the groove on the right side wall of measuring tube 3.
More than the acute angle sharpness t of V-type cone 41 of four kinds of embodiment be not less than 0.002dv, be not more than 0.003dv; The inner cone roughness of V-type cone 41 and the identical R that is made as of dv size face of cylinder roughness
1, R
1Value changes with measuring tube 3 inside diameter D N, and the rear cone roughness is made as R
2, R
2Value compares R
1Be worth little one-level.When measuring tube 3 inside diameter D N＜50mm, R
1=1.6; When measuring tube 3 inside diameter D N 〉=50mm, R
1=3.2; When measuring tube 3 inside diameter D N 〉=150mm, R
1=6.3; When measuring tube 3 inside diameter D N 〉=300mm, R
1=12.5; When measuring tube 3 inside diameter D N 〉=500mm, to R
1Value does not have harsh especially requirement.
In sum, be to draw above data by long-term experiment, be comparison rational structure size, the V awl has been carried out the standard of physical dimension, make standardization, the standardization of V cone flow meter become possibility, improved the measuring accuracy of physical dimension, help the popularization and the application of V cone flow meter.
Claims (4)
1, a kind of V cone flow meter, comprise malleation pressure mouth (1), negative pressure pressure mouth (2), measuring tube (3), V-type cone (41) assembly (4) coaxial with it arranged at measuring tube (3) internal fixation, V-type cone (41) assembly (4) comprises the bracing frame (42) that is connected with V-type cone (41), at the maximum gauge place of V-type cone (41) is sharp edge, it is characterized in that: the angle a between the inner cone of described V-type cone (41) gets 45 ° ± 1 °, and the angle β between the rear cone gets 135 ° ± 1 °; The acute angle sharpness t of described V-type cone (41) is not less than 0.002dv, is not more than 0.003dv; The inner cone roughness of described V-type cone (41) and the identical R that is made as of dv size face of cylinder roughness
1, R
1Value changes with measuring tube (3) inside diameter D N, and the rear cone roughness is made as R
2, R
2Value compares R
1Be worth little one-level.
2, V cone flow meter according to claim 1 is characterized in that: described when measuring tube (3) inside diameter D N＜50mm, and R
1=1.6; When measuring tube (3) inside diameter D N 〉=50mm, R
1=3.2; When measuring tube (3) inside diameter D N 〉=150mm, R
1=6.3; When measuring tube (3) inside diameter D N 〉=300mm, R
1=12.5; When measuring tube (3) inside diameter D N 〉=500mm, to R
1Value does not have harsh especially requirement.
3, V cone flow meter according to claim 1 and 2 is characterized in that: the rear cone of described V-type cone (41) is fixedlyed connected with bracing frame (42).
4, V cone flow meter according to claim 1 and 2, it is characterized in that: described measuring tube (3) both sides are provided with flange (31), the inner cone of V-type cone (41) is fixedlyed connected with bracing frame (42) one ends, and bracing frame (42) other end is arranged on the inwall of measuring tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520075794 CN2821534Y (en) | 2005-09-23 | 2005-09-23 | V-cone flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520075794 CN2821534Y (en) | 2005-09-23 | 2005-09-23 | V-cone flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821534Y true CN2821534Y (en) | 2006-09-27 |
Family
ID=37018088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520075794 Expired - Fee Related CN2821534Y (en) | 2005-09-23 | 2005-09-23 | V-cone flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821534Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032931A (en) * | 2010-12-14 | 2011-04-27 | 重庆市正华钻采设备有限公司 | Valve-type-V-cone throttling device for measuring operation flow of petroleum and gas extraction and transportation |
| CN108955784A (en) * | 2018-06-12 | 2018-12-07 | 西安理工大学 | A kind of surface has the V cone flow meter of bionical micro-structure |
-
2005
- 2005-09-23 CN CN 200520075794 patent/CN2821534Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032931A (en) * | 2010-12-14 | 2011-04-27 | 重庆市正华钻采设备有限公司 | Valve-type-V-cone throttling device for measuring operation flow of petroleum and gas extraction and transportation |
| CN102032931B (en) * | 2010-12-14 | 2012-06-27 | 重庆市正华钻采设备有限公司 | Valve-type-V-cone throttling device for measuring operation flow of petroleum and gas extraction and transportation |
| CN108955784A (en) * | 2018-06-12 | 2018-12-07 | 西安理工大学 | A kind of surface has the V cone flow meter of bionical micro-structure |
| CN108955784B (en) * | 2018-06-12 | 2020-04-21 | 西安理工大学 | V-cone flowmeter with bionic microstructure on surface |
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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 |