CN208254557U - A kind of small pipeline V-type taper flow meter - Google Patents
A kind of small pipeline V-type taper flow meter Download PDFInfo
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- CN208254557U CN208254557U CN201820999605.XU CN201820999605U CN208254557U CN 208254557 U CN208254557 U CN 208254557U CN 201820999605 U CN201820999605 U CN 201820999605U CN 208254557 U CN208254557 U CN 208254557U
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Abstract
The utility model discloses a kind of small pipeline V-type taper flow meter, measuring device is series in process pipe to be measured；Measurement pipe is equipped in flow measurement device, measurement pipe both ends are welded with connecting flange；Measurement pipe rear end forms the notch around inner wall, and fixed ring and support ring are equipped in notch, and support ring includes coaxial outer ring and inner ring, and the inside edge of outer ring connects the outer edge of inner ring by spoke；Support shaft is installed, support shaft top connects cone, and cone middle and lower part gradually uniformly attenuates to both ends, and cone top forms wedge angle in inner ring；Measurement pipe side wall is equipped with two perforative pressure pipes, and pressure pipe connects pressure-detecting device.The utility model structure is simple, easy to process, and small pipeline V-arrangement bores measuring device, remains that crushing is small, measures the good feature of dirtier medium effect, so that client has been saved the energy, reduce maintenance cost, very promising.
Description
Technical field
The utility model relates to flow measurement device field, specifically a kind of small pipeline V-type taper flow meter.
Background technique
V-arrangement cone is a kind of differential pressure type throttling set, is generated than later, although and differential pressure type throttling set, with biography
The differential pressure type throttling set of system has basic difference.Shrinkage cavity makes to generate differential pressure value before and after throttling element among conventional throttle device.
And V-arrangement cone it is exactly the opposite, be in the duct between put a cone, with inner wall of the pipe formed an annular flow through-hole.With
Fluid flows through cone, generates differential pressure value afterwards in the pre taper, though structure type is had any different, working principle all follows bernoulli work
Make principle --- the square root of differential pressure value is directly proportional to flow.
Last century the eighties have invented a kind of novel throttling device, the throttling that it utilizes V-arrangement cone to generate in flow field
Formula flow effect carrys out measuring flow, different from other conventional throttle devices, it changes throttling layout, and fluid is bored through pipeline center
Body compression is flowed along tube wall, and this throttle style is a kind of novel reliable throttling set in modern industry.
The structure of V-arrangement cone is somewhat complicated relative to orifice plate and nozzle, must there is a measurement pipe, the size of measurement pipe and
The caliber size of process pipe is consistent, and cone will also be put into measurement pipe, and postwelding is also wanted to support.Negative impulse central tube will also be with cone
Body is installed in measurement pipe.When pipeline is less than DN40, installation cone is highly difficult, it is difficult to ensure that precision, can not use safely.
In order to guarantee the intensity of negative impulse central tube, play the role of fixed cone, pipe diameter wants sufficiently large in the middle part of negative impulse, is bound to
Interference measurement reduces measurement accuracy, loses measurement meaning, if protecting precision, the diameter of negative impulse central tube is again too small, guarantees
Intensity, wall thickness reach the thickness of requirement, and the inner cavity of that central tube is just too small, and easily blocking maintenance is too frequent, if protecting negative draw
Pressure middle part tube cavity, wall thickness is again too thin, can not play the role of fixed cone, safety accident easily occurs.Since V-arrangement is bored
Crushing it is smaller, the effect for measuring dirtier medium is very good, and many users enjoy a lot to bore using V-arrangement.Therefore weight is needed
A kind of small pipeline V-arrangement cone is designed, newly to meet the requirement of user.
Utility model content
The utility model is exactly to solve the above-mentioned problems, to provide a kind of small pipeline V-type taper flow meter.
The utility model is implemented according to following technical scheme.
A kind of small pipeline V-type taper flow meter, the measuring device are series in process pipe to be measured；The stream
Measurement pipe is equipped in measuring device, measurement pipe both ends are welded with connecting flange, connecting flange and process pipe end
Flange by fastener be connected with each other lock, measurement bore it is identical as process pipe internal diameter；Measurement pipe rear end forms circular
The notch of inner wall, notch depth is uniformly and its edge is concordant with measurement tube edges；Fixed ring and support ring are installed in notch,
Middle fixed ring edge is concordant with measurement tube edges；The support ring includes coaxial outer ring and inner ring, and the inside edge of outer ring passes through
The outer edge of spoke connection inner ring；Support shaft is installed, support shaft top connects cone, and the cone middle and lower part is to two in inner ring
End gradually uniformly attenuates, and cone top forms wedge angle；Measurement pipe side wall is equipped with two perforative pressure pipes, and the pressure pipe includes
Positive pressure pipe in front of cone and the negative pressure pipe positioned at cone rear；Positive negative pressure pipe internal diameter is identical and is each perpendicular to survey
Buret.
Further, the measurement pipe is straight pipeline.
Further, the central axes of the support ring are located on the central axes of measurement pipe.
Further, the contact surface of the duct wall of the outer ring and measurement pipe of the support ring is smooth and the two is closely pasted
It closes；The interface of the duct wall of fixed ring and measurement pipe is fitted closely and is fixed as one by welding manner.
Further, the internal diameter of the internal diameter, outer ring of the measurement pipe, the internal diameter of fixed ring are all the same.
The utility model achieves following beneficial effect.
The utility model structure is simple, easy to process, and small pipeline V-arrangement bores measuring device, and it is small to remain crushing, measures dirtier
The good feature of medium effect, makes client save the energy, reduces maintenance cost, very promising.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of support ring in the utility model；
Fig. 3 is the profilograph of support ring in the utility model；
Fig. 4 is the decomposition diagram of fixed ring and support ring in measurement pipe in the utility model.
Wherein, 1. connecting flange；2. measurement pipe；201. notch；3. positive pressure pipe；4. negative pressure pipe；5. cone；6. support
Ring；601. inner ring；602. outer ring；603. spoke；7. fixed ring；8. support shaft.
Specific embodiment
Referring to the drawings and embodiment carries out further technology explanation to the utility model.
As shown in figures 1-4, a kind of small pipeline V-type taper flow meter, the measuring device are series at technique to be measured
In pipeline；Measurement pipe 2 is equipped in the flow measurement device, 2 both ends of measurement pipe are welded with connecting flange 1, connection method
The flange of orchid 1 and process pipe end is connected with each other by fastener and is locked, and 2 internal diameter of measurement pipe is identical as process pipe internal diameter；
2 rear end of measurement pipe forms the notch 201 around inner wall, 201 uniform depth of notch and its edge is concordant with 2 edge of measurement pipe；It cuts
Fixed ring 7 and support ring 6 are installed in mouth 201, wherein 7 edge of fixed ring is concordant with 2 edge of measurement pipe；The support ring 6 is wrapped
Coaxial outer ring 602 and inner ring 601 are included, the inside edge of outer ring 602 connects the outer edge of inner ring 601 by spoke 603；Inner ring
Support shaft 8 is installed, 8 top of support shaft connects cone 5, and 5 middle and lower part of cone gradually uniformly attenuates to both ends, bores in 601
Wedge angle is formed at the top of body 5；2 side wall of measurement pipe is equipped with two perforative pressure pipes, and the pressure pipe includes positioned at 5 front of cone
Positive pressure pipe 3 and negative pressure pipe 4 positioned at 5 rear of cone；Positive negative pressure pipe internal diameter is identical and is each perpendicular to measurement pipe 2.
The measurement pipe 2 is straight pipeline.
The central axes of the support ring 6 are located on the central axes of measurement pipe 2.
The outer ring 602 of the support ring 6 and contact surface of the duct wall of measurement pipe 2 is smooth and the two fits closely；Gu
The interface for determining ring 7 and the duct wall of measurement pipe 2 is fitted closely and is fixed as one by welding manner.
The internal diameter of the measurement pipe 2, the internal diameter of outer ring 602, the internal diameter of fixed ring 7 are all the same.
The principles of the present invention and application method are as follows:
Connecting flange 1 is attached by fastener and gasket with the companion flange being soldered on process pipe, by V-arrangement
Cone is installed on process pipe.
The internal diameter of measurement pipe 2 is consistent with tested pipeline internal diameter, for installing V-arrangement cone throttling element, passes through flange
It is connected on tested pipeline.
Positive pressure pipe 3 obtains the measured positive pressure of V-arrangement cone；Negative pressure pipe 4 obtains the measured negative pressure of V-arrangement cone, two pressures
The other end of pipe connects pressure-detecting device.
Cone 5 is main measuring cell, as fluid flows therethrough, generates pressure difference at 5 both ends of cone, and pass through pressure pipe for pressure difference
It is transferred to pressure monitoring device.
Support ring 6 for fix V-arrangement cone support shaft and cone 5 make cone mounted in measurement tube hub, make 5 central axes of cone and
2 central axes of measurement pipe are overlapped, and in addition bear all axial forces.
Fixed ring 7 prevents it from falling off for fixing support ring 6.The internal diameter of outer ring 602 internal diameter and fixed ring 7
It is consistent with 2 internal diameter of measurement pipe, guarantee 2 inner wall smooth of measurement pipe after support ring 6 and fixed ring 7 are installed, without boss, guarantees
Measurement accuracy.Support ring 6 and fixed ring 7 are respectively positioned in the notch 602 of 2 tail end of measurement pipe processing, outside the outer ring 602 of support ring 6
Diameter and 7 outer diameter of fixed ring are consistent with 2 notch internal diameter of measurement pipe, and use transition fit, it is ensured that 5 axial line of cone and measurement
2 axial line of pipe is overlapped.
It disposably processes coaxial with cone 5 support shaft 8 with cone 5, is mainly played by the connection with support ring 6
The effect of fixed cone 5, it is ensured that 5 axial line of cone and 2 axial line of measurement pipe are coaxial.
Inside DN40 V-arrangement cone below, negative impulse central tube hinders the installation of cone 5, and negative impulse central tube is taken
Disappear.Cone 5 and support shaft 8 are made into solid one, time processing, which comes out, guarantees that support shaft 8 and cone 5 are coaxial.Support shaft 8 is
Solid, negative pressure cannot be taken in 5 tail portion of cone, negative pressure can only be taken on tube wall.When fluid flows through cone 5, in 5 tail portion of cone
A negative pressure band is formed, closer apart from 5 tail portion of cone, pressure is closer from tube wall with regard to smaller, and pressure is bigger, when using pipe
When wall pressure, the differential pressure of V-arrangement cone will be reduced.When using negative impulse central tube, Riser portions will increase crushing, be removed
Afterwards, crushing reduces, if differential pressure is too low, can increase 5 outer diameter of cone and improve differential pressure value, and cone 5 increases and the crushing of generation
With remove negative impulse central tube the crushing of reduction offset.Using tube wall pressure, negative impulse central tube can be cancelled, pass through support
Cone 5 is fixed on measurement tube hub by ring 6 and fixed ring 7, and here it is small pipeline V-arrangements to bore measuring device.
Claims (5)
1. a kind of small pipeline V-type taper flow meter, the measuring device are series in process pipe to be measured；Its feature exists
In equipped with measurement pipe (2) in the flow measurement device, measurement pipe (2) both ends are welded with connecting flange (1), are connected
Flange (1) and the flange of process pipe end are connected with each other by fastener locks, measurement pipe (2) internal diameter and process pipe internal diameter
It is identical；Measurement pipe (2) rear end forms the notch (201) around inner wall, notch (201) uniform depth and its edge and measurement pipe
(2) edge is concordant；Fixed ring (7) and support ring (6) are installed in notch (201), wherein fixed ring (7) edge and measurement pipe
(2) edge is concordant；The support ring (6) includes coaxial outer ring (602) and inner ring (601), and the inside edge of outer ring (602) passes through
Spoke (603) connects the outer edge of inner ring (601)；It is equipped in inner ring (601) support shaft (8), support shaft (8) top connection cone
Body (5), cone (5) middle and lower part gradually uniformly attenuate to both ends, and wedge angle is formed at the top of cone (5)；Measurement pipe (2) side wall is set
There are two perforative pressure pipes, the pressure pipe includes after being located at the positive pressure pipe (3) in front of cone (5) and being located at cone (5)
The negative pressure pipe (4) of side；Positive negative pressure pipe internal diameter is identical and is each perpendicular to measurement pipe (2).
2. a kind of small pipeline V-type taper flow meter as described in claim 1, which is characterized in that the measurement pipe (2) is
Straight pipeline.
3. a kind of small pipeline V-type taper flow meter as described in claim 1, which is characterized in that the support ring (6)
Central axes are located on the central axes of measurement pipe (2).
4. a kind of small pipeline V-type taper flow meter as described in claim 1, which is characterized in that the support ring (6)
The contact surface of outer ring (602) and the duct wall of measurement pipe (2) is smooth and the two fits closely；Fixed ring (7) and measurement pipe (2)
The interface of duct wall fit closely and be fixed as one by welding manner.
5. a kind of small pipeline V-type taper flow meter as described in claim 1, which is characterized in that the measurement pipe (2)
Internal diameter, the internal diameter of outer ring (602), the internal diameter of fixed ring (7) are all the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820999605.XU CN208254557U (en) | 2018-06-27 | 2018-06-27 | A kind of small pipeline V-type taper flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820999605.XU CN208254557U (en) | 2018-06-27 | 2018-06-27 | A kind of small pipeline V-type taper flow meter |
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| Publication Number | Publication Date |
|---|---|
| CN208254557U true CN208254557U (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820999605.XU Active CN208254557U (en) | 2018-06-27 | 2018-06-27 | A kind of small pipeline V-type taper flow meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729428A (en) * | 2021-01-14 | 2021-04-30 | 中国石油大学胜利学院 | High-precision V-shaped cone flowmeter |
-
2018
- 2018-06-27 CN CN201820999605.XU patent/CN208254557U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729428A (en) * | 2021-01-14 | 2021-04-30 | 中国石油大学胜利学院 | High-precision V-shaped cone flowmeter |
| CN112729428B (en) * | 2021-01-14 | 2023-02-17 | 山东石油化工学院 | High-precision V-shaped cone flowmeter |
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