CN107421592A - A kind of wide-range flow sensor - Google Patents
A kind of wide-range flow sensor Download PDFInfo
- Publication number
- CN107421592A CN107421592A CN201710631373.2A CN201710631373A CN107421592A CN 107421592 A CN107421592 A CN 107421592A CN 201710631373 A CN201710631373 A CN 201710631373A CN 107421592 A CN107421592 A CN 107421592A
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- China
- Prior art keywords
- pipe
- package tube
- rough segmentation
- subdivision
- port
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
Abstract
The present invention relates to flow sensor technical field, refers specifically to a kind of wide-range flow sensor；Including package tube, the front port of the package tube is provided with inlet union, and the rear port of package tube is provided with outlet connection, subdivision pipe and rough segmentation pipe are provided with the inner chamber of package tube；The front port of the subdivision pipe is provided with oviduct, and the front port of rough segmentation pipe is provided with beam mouth pipe, and the inwall of package tube, subdivision pipe and rough segmentation pipe is provided with thermal flow rate sensor；The present invention is rational in infrastructure, and the flow flowed through in package tube is divided by segmenting pipe and rough segmentation pipe, and flow velocity is amplified and reduced respectively, extends the measurement range and improving measurement accuracy of sensor；Flow rate detection is compensated using pressure measxurement simultaneously, further improves accuracy of detection, overall structure is simply easy to assembly, and expansion has a wide range of application by force.
Description
Technical field
The present invention relates to flow sensor technical field, refers specifically to a kind of wide-range flow sensor.
Background technology
Micromechanics has huge application prospect in fluid applications, for measuring the microfluid of the various properties of fluid sensing
Device is a key areas of microfluid machinery.At present, the property measurement of convection body be concentrated mainly on flow velocity, flow, flow to it is several
Individual aspect.Traditional little differential pressure sensor is by differential pressure measurement flow, and accurate and resolving power is good during high flow capacity, and low discharge is precision
It is poor.By the development of more than 30 years, the extensive use of hot type microflow sensor, thermal flow rate sensor has many good qualities,
Such as CMOS technology compatibility, low discharge measurement sensitivity height etc. can be realized, but in the flow rate test of higher range, precision is not
It is enough.How existing high low voltage difference measurement accuracy is realized, also can guarantee that larger measurement range is current this kind of sensor
Research Emphasis.
The content of the invention
, should in view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of wide-range flow sensor
Sensor splits the different subdivision pipes and rough segmentation pipe of bore, and main fluid conduit, subdivision pipe and rough segmentation in same fluid line
Thermal flow rate sensor is provided with pipe；When fluid flows to the port of export from package tube entrance point, subdivision pipe passes through oviduct
Afflux effect improve tube fluid flow velocity, rough segmentation pipe by beam mouth pipe reduce tube fluid flow velocity, it is achieved thereby that stream
The amplification and diminution of rate of flow of fluid, when flow velocity is smaller, the sensing data segmented in pipe enters to the sensing data in package tube
Row compensation, so as to improve the lower range resolution ratio and measurement accuracy for the treatment of measurement of discharge；When flow velocity is larger, the sensor in rough segmentation pipe
Data compensate to the sensing data in package tube, so as to improve the high range resolution ratio and measurement accuracy for the treatment of measurement of discharge；
The present invention tests fluid pressure in package tube by the deformation quantity of elastic membrane simultaneously, and then is improved under the compensation of Stress testing loss
Fluid test precision.
To achieve these goals, the present invention uses following technical scheme：
A kind of wide-range flow sensor of the present invention, including package tube, the front port of the package tube are provided with import
Joint, the rear port of package tube are provided with outlet connection, subdivision pipe and rough segmentation pipe are provided with the inner chamber of package tube；The subdivision pipe
Front port be provided with oviduct, the front port of rough segmentation pipe is provided with beam mouth pipe, on the inwall of package tube, subdivision pipe and rough segmentation pipe
Provided with thermal flow rate sensor.
According to above scheme, the subdivision pipe and rough segmentation Guan Junyu package tubes be arranged in parallel, and the bore of rough segmentation pipe is less than envelope
The half of tubulature bore, the bore for segmenting pipe are less than the half of package tube bore.
According to above scheme, the front end bore of the oviduct is more than rear end bore, and rear port and the subdivision of oviduct are managed
Front port docks；The front end bore of the beam mouth pipe is less than rear end bore, and the rear port of beam mouth pipe docks with rough segmentation pipe front port.
According to above scheme, the side outer rim of the package tube is provided with pipe joint, is packaged with the upper port of pipe joint
Elastic membrane, the upper end of pipe joint are provided with end cap, pressure sensor are provided between end cap inwall and elastic membrane.
According to above scheme, elastic backing ring is provided with the end cap, elastic backing ring is adapted to pipe joint upper port, cushion
The foundation ring of ring is pressed on the encapsulation side of elastic membrane.
The present invention has the beneficial effect that：The present invention is rational in infrastructure, divides what is flowed through in package tube by segmenting pipe and rough segmentation pipe
Flow, and flow velocity is amplified and reduced respectively, extend the measurement range and improving measurement accuracy of sensor；Use pressure simultaneously
Measurement compensates to flow rate detection, further improves accuracy of detection, overall structure is simply easy to assembly, and expansion applies by force model
Enclose wide.
Brief description of the drawings
Fig. 1 is the section overlooking the structure diagram of the present invention；
Fig. 2 is the cross-sectional side view structural representation of the present invention.
In figure：
1st, package tube；2nd, subdivision pipe；3rd, rough segmentation pipe；4th, thermal flow rate sensor；11st, inlet union；12nd, outlet connection；13rd, manage
Joint；14th, elastic membrane；15th, pipe joint；16th, pressure sensor；17th, elastic backing ring；21st, oviduct；31st, beam mouth pipe.
Embodiment
Technical scheme is illustrated with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of wide-range flow sensor of the present invention, including package tube 1, the package tube 1
Front port is provided with inlet union 11, and the rear port of package tube 1 is provided with outlet connection 12, is provided with the inner chamber of package tube 1 thin
It is in charge of 2 and rough segmentation pipe 3；The front port of the subdivision pipe 2 is provided with oviduct 21, and the front port of rough segmentation pipe 3 is provided with beam mouth pipe
31, the inwall of package tube 1, subdivision pipe 2 and rough segmentation pipe 3 is provided with thermal flow rate sensor 4.
The structure setting principle of the present invention：
Package tube 1 is connected in fluid line by leading inlet joint 11 and back outlet joint 12, and fluid is from inlet union
11 into outlet connection 12 is flowed to, and the subdivision pipe 2 set in the inner chamber of package tube 1 and the bore of rough segmentation pipe 3 differ, due to package tube 1
Interior flow velocity and pressure is certain, and oviduct 21 flows through the fluid in subdivision pipe 2 by afflux effect and raised speed, and beam mouth pipe 31 makes
Flow through the fluid reduction of speed in rough segmentation pipe 3, so as to by caliber than difference make to treat that velocity measurement forms amplification and reduced, package tube 1,
Thermal sensor 4 in subdivision pipe 2 and rough segmentation pipe 3 works and test data can compensated to improve precision simultaneously；Work as test
At fluid during flow at high speed, the flow velocity in rough segmentation pipe 3 is less than package tube 1, then the now sensor in rough segmentation pipe 3 and package tube 1
Work, and test data is mutually compensated for extend high speed range；When test fluid is in low speeds flow, segment in pipe 2
Flow velocity is more than package tube 1, then now segments the working sensor in pipe 2 and package tube 1, and test data is mutually compensated for expand
Open up low speed range.
The subdivision pipe 2 and rough segmentation pipe 3 be arranged in parallel with package tube 1, and the bore of rough segmentation pipe 3 is less than the bore of package tube 1
Half, subdivision pipe 2 bore be less than the bore of package tube 1 half；The package tube 1, subdivision pipe 2, thick airduct 3
Relative aperture classifying rationally, the fluid velocity that can be flowed through amplifies and reduced respectively, so as to realize the extension of range.
The front end bore of the oviduct 21 is more than rear end bore, rear port and the subdivision front port pair of pipe 2 of oviduct 21
Connect；The front end bore of the beam mouth pipe 31 is less than rear end bore, and the rear port of beam mouth pipe 31 docks with the front port of rough segmentation pipe 3；Institute
State oviduct 21 and beam mouth pipe 31 is conical pipe that both ends bore differs, so as to pass through the difference of arrival end and caliber, realize
Treat the flow velocity amplification of fluid measured and reduce.
The side outer rim of the package tube 1 is provided with pipe joint 13, is packaged with elastic membrane 14 in the upper port of pipe joint 13,
The upper end of pipe joint 13 is provided with end cap 15, and pressure sensor 16 is provided between the inwall of end cap 15 and elastic membrane 14；The pipe joint
13 three-way pipe structures being integrally formed on package tube 1, pipe joint 13 can be easy to segment the assembling of pipe 2, rough segmentation pipe 3, and then bullet
Property film 14 pipe joint 13 is sealed, when the fluid in package tube 1 enter it is fashionable, internal pressure change make the deformation of elastic membrane 14 triggering pressure
Force snesor 16, the pressure sensor 16 can use touch sensor or fiber F-P cavity pressure sensor, be surveyed by pressure
Examination value can compensate to flow rate measurements, so as to effectively improve the measurement accuracy of sensor.
Elastic backing ring 17 is provided with the end cap 15, elastic backing ring 17 is adapted to the upper port of pipe joint 13, elastic backing ring 17
Foundation ring be pressed on the encapsulation side of elastic membrane 14；The end cap 15 is used to install pressure sensor 16 and curing elastic film 14 encapsulates
Connection, end cap 15 coordinate the deformation stroke so that adjustable elastic film 14 using screw thread with pipe joint 13, are easy to pressure sensor
16 Precision adjustment；The lower end of elastic backing ring 17 is docked with the upper port of pipe joint 13, and then pushing under fixation in end cap 15
Realize the sealing that side is encapsulated to elastic membrane 14.
Described above is only the better embodiment of the present invention, therefore all constructions according to described in present patent application scope,
The equivalent change or modification that feature and principle are done, is included in the range of present patent application.
Claims (5)
1. a kind of wide-range flow sensor, including package tube (1), it is characterised in that：Set on the front port of the package tube (1)
There is inlet union (11), the rear port of package tube (1) is provided with outlet connection (12), subdivision is provided with the inner chamber of package tube (1)
Manage (2) and rough segmentation pipe (3)；The front port of the subdivision pipe (2) is provided with oviduct (21), is set on the front port of rough segmentation pipe (3)
There is beam mouth pipe (31), the inwall of package tube (1), subdivision pipe (2) and rough segmentation pipe (3) is provided with thermal flow rate sensor (4).
2. wide-range flow sensor according to claim 1, it is characterised in that：The subdivision pipe (2) and rough segmentation pipe (3)
It is be arranged in parallel with package tube (1), the bore of rough segmentation pipe (3) is less than the half of package tube (1) bore, subdivision pipe (2)
Bore is less than the half of package tube (1) bore.
3. wide-range flow sensor according to claim 1, it is characterised in that：The front end bore of the oviduct (21)
More than rear end bore, the rear port of oviduct (21) docks with subdivision pipe (2) front port；The front end bore of the beam mouth pipe (31)
Less than rear end bore, the rear port of beam mouth pipe (31) docks with rough segmentation pipe (3) front port.
4. wide-range flow sensor according to claim 1, it is characterised in that：The side outer rim of the package tube (1)
Pipe joint (13) is provided with, elastic membrane (14) is packaged with the upper port of pipe joint (13), the upper end of pipe joint (13) is provided with end
Cover (15), pressure sensor (16) is provided between end cap (15) inwall and elastic membrane (14).
5. wide-range flow sensor according to claim 1, it is characterised in that：Cushion is provided with the end cap (15)
Ring (17), elastic backing ring (17) are adapted to pipe joint (13) upper port, and the foundation ring of elastic backing ring (17) is pressed in elastic membrane (14)
Encapsulate on side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710631373.2A CN107421592A (en) | 2017-07-28 | 2017-07-28 | A kind of wide-range flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710631373.2A CN107421592A (en) | 2017-07-28 | 2017-07-28 | A kind of wide-range flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107421592A true CN107421592A (en) | 2017-12-01 |
Family
ID=60430715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710631373.2A Pending CN107421592A (en) | 2017-07-28 | 2017-07-28 | A kind of wide-range flow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107421592A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833969A (en) * | 2021-01-29 | 2021-05-25 | 江苏华尔威科技集团有限公司 | High-precision vortex shedding flowmeter |
| CN112833968A (en) * | 2021-01-29 | 2021-05-25 | 江苏华尔威科技集团有限公司 | Wide-range high-temperature-resistant steam two-phase flowmeter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11211526A (en) * | 1998-01-21 | 1999-08-06 | Fuji Electric Co Ltd | Flow measuring device |
| CN1309284A (en) * | 2000-09-09 | 2001-08-22 | 党晓民 | Design method and equipment of built-in dual-venturi fluid measurer |
| JP2003149024A (en) * | 2001-11-15 | 2003-05-21 | Denso Corp | Flow rate measuring device |
| CN1479083A (en) * | 2003-04-20 | 2004-03-03 | 胡永成 | Built in gas flow meter and temperature pressure compensation transmission method |
| CN102305645A (en) * | 2011-07-26 | 2012-01-04 | 河北大学 | Gas-liquid phase flow measurement device |
-
2017
- 2017-07-28 CN CN201710631373.2A patent/CN107421592A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11211526A (en) * | 1998-01-21 | 1999-08-06 | Fuji Electric Co Ltd | Flow measuring device |
| CN1309284A (en) * | 2000-09-09 | 2001-08-22 | 党晓民 | Design method and equipment of built-in dual-venturi fluid measurer |
| JP2003149024A (en) * | 2001-11-15 | 2003-05-21 | Denso Corp | Flow rate measuring device |
| CN1479083A (en) * | 2003-04-20 | 2004-03-03 | 胡永成 | Built in gas flow meter and temperature pressure compensation transmission method |
| CN102305645A (en) * | 2011-07-26 | 2012-01-04 | 河北大学 | Gas-liquid phase flow measurement device |
Non-Patent Citations (1)
| Title |
|---|
| 钱德群: "《矿井通风安全仪器及监测系统》", 31 May 1991, 煤炭工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833969A (en) * | 2021-01-29 | 2021-05-25 | 江苏华尔威科技集团有限公司 | High-precision vortex shedding flowmeter |
| CN112833968A (en) * | 2021-01-29 | 2021-05-25 | 江苏华尔威科技集团有限公司 | Wide-range high-temperature-resistant steam two-phase flowmeter |
| CN112833969B (en) * | 2021-01-29 | 2024-04-02 | 江苏华尔威科技集团有限公司 | High-precision vortex shedding flowmeter |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171201 |
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| RJ01 | Rejection of invention patent application after publication |