CN115060331A - Flow sensor of hydraulic system - Google Patents
Flow sensor of hydraulic system Download PDFInfo
- Publication number
- CN115060331A CN115060331A CN202210384318.9A CN202210384318A CN115060331A CN 115060331 A CN115060331 A CN 115060331A CN 202210384318 A CN202210384318 A CN 202210384318A CN 115060331 A CN115060331 A CN 115060331A
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- China
- Prior art keywords
- flow
- pipeline
- channel
- pipe
- hydraulic system
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- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 230000006698 induction Effects 0.000 claims abstract description 21
- 230000000087 stabilizing effect Effects 0.000 claims description 62
- 239000003381 stabilizer Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000002401 inhibitory effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
Images
Classifications
-
- 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
- G01F1/06—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 using rotating vanes with tangential admission
- G01F1/075—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 using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/005—Valves
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a hydraulic system flow sensor, belonging to the field of liquid flow velocity sensors, comprising a flow pipe and an induction unit, the flow pipe is used for liquid to be measured to flow through, the sensing unit is used for acquiring the flow rate of the liquid flowing through the flow pipe, the circulating pipe is sequentially a first pipeline, a second pipeline and a third pipeline, the second pipeline is positioned between the first pipeline and the third pipeline, the sectional areas of the first pipeline and the third pipeline are the same, the sectional area of the second pipeline is smaller than that of the first pipeline, the sensor comprises a sensing tube, the cross-sectional area of the sensing tube is at most 10% of the cross-sectional area of the first pipeline, one end of the sensing tube extends to the side surface of the first pipeline and forms a shunt inlet at the side surface of the first pipeline, and the other end of the sensing tube extends to the side surface of the second pipeline and forms a shunt outlet at the side surface of the second pipeline.
Description
Technical Field
The present invention relates to the field of sensors.
Background
When no liquid flows through the sensor, two ends of the circuit generate two voltages with opposite voltages and equal amplitudes, the signals are superposed to output the signals from the output end, when the liquid flows through the sensor, the flowing pressure of the liquid forces the impeller to rotate, and the flow of the liquid is measured by measuring the rotating speed of the impeller.
When the existing sensor is used for measuring thick pipelines, the window flow speed with high measurement accuracy is narrow, and when the existing sensor is used for measuring high-flow, low-flow and liquid with large viscosity change, the accuracy is often greatly reduced, so that the measurement accuracy is influenced.
Disclosure of Invention
The invention discloses a hydraulic system flow sensor, which aims at the problems in the prior art and comprises a circulating pipe and a sensing unit, wherein the circulating pipe is used for liquid to be measured to flow through, the sensing unit is used for acquiring the flow velocity of the liquid flowing through the circulating pipe, the hydraulic system flow sensor is characterized in that the circulating pipe sequentially comprises a first pipe, a second pipe and a third pipe, the second pipe is positioned between the first pipe and the third pipe, the pipe cross sections of the first pipe and the third pipe are the same, the cross section area of the second pipe is smaller than that of the first pipe, the sensor comprises a sensing pipe, the cross section area of the sensing pipe is maximally 10% of that of the first pipe, one end of the sensing pipe extends to the side surface of the first pipe and forms a shunt inlet on the side surface of the first pipe, the other end of the sensing pipe extends to the side surface of the second pipe and forms a component outlet on the side surface of the second pipe, the induction pipe is provided with an induction assembly for detecting the flow velocity of liquid in the induction pipe, the communication part of the second pipeline and the first pipeline is provided with a flow stabilizing valve for inhibiting the uneven flow velocity of the liquid in the second pipeline, and the shunting outlet is positioned at the downstream of the flow stabilizing valve.
The sensing assembly comprises a rotating wheel driven by flowing liquid of the sensing pipe and a Hall sensor for sensing the rotating speed of the rotating wheel. The flow stabilizing valve comprises a plurality of flow stabilizing channels distributed along the axial section direction of the second pipeline, each flow stabilizing channel is independent, liquid enters the second pipeline from the first pipeline through the flow stabilizing channel, a regulating piece is arranged in each flow stabilizing channel, the regulating piece is set to increase the resistance of the flow stabilizing channel when the flow rate of the liquid in one flow stabilizing channel is too high, and the resistance of the flow stabilizing channel can be reduced when the flow rate of the liquid is too low, so that the flow rate of the liquid flowing through the flow stabilizing channels is uniform and stable in the radial direction.
The flow stabilizing channel sequentially comprises a first channel, a flow stabilizing cavity and a second channel along the direction of liquid, the sectional area of the flow stabilizing cavity is larger than that of the first channel and that of the second channel, the sections of the first channel and the second channel are the same, and the flow stabilizing cavity is of a spherical structure.
The flow stabilizing ball is arranged in the flow stabilizing cavity, and when the flow rate of liquid flowing through the flow stabilizing cavity is too high, the flow stabilizing ball can be driven to move towards the direction of the second channel so as to increase the flow resistance of the flow stabilizing cavity towards the second channel.
And a steady flow spring is connected on the steady flow ball, one end of the steady flow spring is connected with the steady flow ball, and the other end of the steady flow spring is connected at the inlet of the first channel. The sectional area of the second pipeline is 50% of that of the first pipeline, and the joint of the first pipeline and the second pipeline is gradually transited. The sectional area of the induction pipe is 10% of that of the first pipeline.
According to the invention, the flow speed change of the liquid flowing through the first pipeline can influence the flow speed change of the sensing pipe, and the flow speed change of the first pipeline is obtained according to the flow speed of the sensing pipe with a thinner measurement, so that the accuracy of the flow speed measurement of the first pipeline is high in a wider range.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is a schematic structural view of the present invention;
the labels in the figure are: the flow stabilizing device comprises a flow pipe, 11-a first pipeline, 12-a second pipeline, 13-a third pipeline, 2-an induction unit, 21-an induction pipe, 211-an induction assembly, 22-a shunt inlet, 23-a shunt outlet, 3-a flow stabilizing valve, 31-a flow stabilizing channel, 311-a first channel, 312-a flow stabilizing cavity, 313-a second channel, 32-a flow stabilizing ball and 33-a flow stabilizing spring.
Detailed Description
In order to solve the problems in the prior art, the present embodiment discloses a flow sensor of a hydraulic system, as shown in fig. 1, which includes a flow pipe 1 and a sensing unit 2, wherein the flow pipe 1 is used for flowing a liquid to be measured, the sensing unit is used for acquiring a flow rate of the liquid flowing through the flow pipe, the flow pipe 1 sequentially includes a first pipe 11, a second pipe 12, and a third pipe 13, the second pipe 12 is located between the first pipe 11 and the third pipe 13, as shown in fig. 3, the first pipe 11, the second pipe 12, and the third pipe 13 form a total pipe, the second pipe 12 is located in the middle, the cross section of the second pipe gradually shrinks, the cross sections of the three pipes are all circular, the first pipe 11 is in smooth transition to the second pipe 12, the second pipe 12 is in smooth transition to the third pipe 13, the first pipe 11 is in the same cross section as the third pipe 13, so that the flow rates of the liquid flowing through the first and third conduits 11 and 13 are substantially the same. The fluid flow rate of the second pipe 12 is greater than the liquid flow rate of the first pipe 11 and the third pipe 13, and the cross-sectional area of the liquid flow rate pipe of the second pipe 12 is related.
Continuing to fig. 3, the sensor includes a sensing tube 21, the cross-sectional area of the sensing tube is at most 10% of the cross-sectional area of the first pipeline, preferably 10%, one end of the sensing tube 21 extends to the side of the first pipeline 11 and forms a diversion inlet 22 at the side of the first pipeline, the other end of the sensing tube 21 extends to the side of the second pipeline 12 and forms a diversion outlet 23 at the side of the second pipeline, a sensing assembly 211 for detecting the flow rate of the liquid in the sensing tube is arranged on the sensing tube 21, a flow stabilizing valve 3 is arranged at the communication position of the second pipeline and the first pipeline for inhibiting the uneven flow rate of the liquid in the second pipeline, the diversion outlet 23 is positioned at the lower oil of the flow stabilizing valve, when the liquid enters the second pipeline 12 from the first pipeline 11, the liquid flow rate changes to form a vortex or the like, so that the liquid is uneven in the radial direction and the flow rate affects the accuracy of the detection, the present invention is provided with a flow stabilizing valve, the liquid flow rate of the second pipeline 12 is more uniform and stable, and the uniformity of the detection result is improved.
In a preferred embodiment, the sensing assembly 211 includes a rotating wheel driven by the flowing liquid in the sensing tube 21 and a hall sensor for sensing the rotating speed of the rotating wheel, and in other embodiments, other sensing assemblies 211 capable of obtaining the flowing speed of the liquid in the sensing tube 21 may be adopted.
The flow stabilizing valve 3 comprises a plurality of flow stabilizing channels 31 distributed along the axial section direction of the second pipeline, each flow stabilizing channel 31 is independent, liquid enters the second pipeline 12 from the first pipeline through the flow stabilizing channel 11, a regulating part is arranged in each flow stabilizing channel, the regulating part is set to be too fast when the flow speed of the liquid of one flow stabilizing channel is too fast, the resistance of the flow stabilizing channel can be increased, and when the flow speed of the liquid is too slow, the resistance of the flow stabilizing channel can be reduced, so that the flow speed of the liquid flowing through the flow stabilizing channels is uniform and stable in the radial direction.
In a preferred embodiment, the flow stabilizing channel 31 sequentially includes a first channel 311, a flow stabilizing cavity 312, and a second channel 313 along the direction of the liquid, the sectional area of the flow stabilizing cavity is greater than the sectional areas of the first channel and the second channel, the sectional areas of the first channel and the second channel are the same, and the flow stabilizing cavity is a sphere structure. The flow stabilizing cavity is internally provided with a flow stabilizing ball 32 which can be driven to move towards the second channel 313 when the flow rate of the liquid flowing through the flow stabilizing cavity is overlarge so as to increase the flow resistance of the flow stabilizing cavity towards the second channel.
In a preferred embodiment, the steady flow ball 32 is connected with a steady flow spring 33, one end of the steady flow spring 33 is connected with the steady flow ball, and the other end is connected with the inlet of the first channel, as shown in fig. 4, the other end of the spring can be connected with the inlet of the first channel, a support is arranged on the inlet, the spring is connected with the support, and the support can be a rod-shaped structure. In some other embodiments, the other end of the spring may be attached to the side of the inlet, as shown by the small circle in FIG. 4. In other embodiments, when red, the flow stabilizer ball may be directly disposed in the flow stabilizer chamber 312, and the flow stabilizer ball may be driven to move under the condition of high flow speed.
In a specific embodiment, the cross-sectional area of the second pipe 12 is 50% of the cross-sectional area of the first pipe, and the junction between the first pipe and the second pipe is gradually transited. The sectional area of the induction pipe is 10% of that of the first pipeline.
According to the invention, because the flow rates of the first pipeline and the second pipeline are different, a hydraulic pressure difference is directly formed at the diversion inlet 22 and the diversion outlet 23, the magnitude of the hydraulic pressure difference is related to the flow rates of the first pipeline and the second pipeline, the change of the hydraulic pressure difference can influence the liquid flow rate of the induction pipe 21, the liquid flow rate of the first pipeline and the second pipeline of the thicker pipeline can be obtained by measuring the liquid flow rate of the thinner induction pipe 21, so that the induction pipe 21 can accurately measure under the condition that the flow rate of the first pipeline and the second pipeline is changed greatly, and the window range of the measured flow rate is enlarged. Meanwhile, when the flow velocity change of the first pipeline entering the second pipeline is large, the flow velocity is uneven in the radial direction, and eddies and the like are formed.
Claims (8)
1. A hydraulic system flow sensor comprises a flow pipe (1) and an induction unit (2), wherein the flow pipe (1) is used for liquid to be measured to flow through, the induction unit is used for acquiring the flow rate of the liquid flowing through the flow pipe, the hydraulic system flow sensor is characterized in that the flow pipe (1) sequentially comprises a first pipeline (11), a second pipeline (12) and a third pipeline (13), the second pipeline (12) is positioned between the first pipeline (11) and the third pipeline (13), the pipeline cross sections of the first pipeline (11) and the third pipeline (13) are the same, the cross section area of the second pipeline is smaller than that of the first pipeline (11), the hydraulic system flow sensor comprises an induction pipe (21), the cross section area of the induction pipe is at most 10% of that of the first pipeline, one end of the induction pipe (21) extends to the side face of the first pipeline (11) and forms a shunt inlet (22) on the side face of the first pipeline, the other end of the induction pipe (21) extends to the side face of the second pipeline (12) and forms a flow stabilizing opening (23) on the side face of the second pipeline, an induction component (211) for detecting the flow rate of liquid in the induction pipe is arranged on the induction pipe (21), a flow stabilizing valve (3) for inhibiting the uneven flow rate of the liquid in the second pipeline is arranged at the communication position of the second pipeline and the first pipeline, and the flow separating opening (23) is located at the downstream of the flow stabilizing valve.
2. The hydraulic system flow sensor as claimed in claim 1, wherein the sensing assembly (211) comprises a wheel driven by the fluid flowing through the sensing tube (21), and a hall sensor for sensing the rotation speed of the wheel.
3. The hydraulic system flow sensor as claimed in claim 2, wherein the flow stabilizing valve (3) comprises a plurality of flow stabilizing channels (31) distributed along the axial cross section of the second conduit, each flow stabilizing channel (31) is independent of the other, the fluid from the first conduit enters the second conduit (12) through the flow stabilizing channel (11), and a regulating member is arranged in each flow stabilizing channel, and the regulating member is configured to increase the resistance of the flow stabilizing channel when the flow rate of the fluid in one flow stabilizing channel is too high, and decrease the resistance of the flow stabilizing channel when the flow rate of the fluid is too low, so that the flow rate of the fluid flowing through the flow stabilizing channel is uniform and stable in the radial direction.
4. The hydraulic system flow sensor as claimed in claim 3, wherein the flow stabilizing channel (31) comprises a first channel (311), a flow stabilizing cavity (312) and a second channel (313) in sequence along the direction of the liquid, the cross-sectional area of the flow stabilizing cavity is larger than that of the first channel and that of the second channel, the cross-sections of the first channel and the second channel are the same, and the flow stabilizing cavity is of a spherical structure.
5. The hydraulic system flow sensor of claim 4, wherein a flow stabilizer ball (32) is disposed in the flow stabilizer chamber, the flow stabilizer ball being capable of being driven toward the second passageway (313) to increase the resistance of the flow stabilizer chamber to the second passageway when the flow rate of the fluid through the flow stabilizer chamber is excessive.
6. The flow sensor of the hydraulic system as claimed in claim 5, wherein the steady flow ball (32) is connected with a steady flow spring (33), one end of the steady flow spring (33) is connected with the steady flow ball, and the other end of the steady flow spring is connected with the inlet of the first channel.
7. Hydraulic system flow sensor according to any of claims 1-6, characterised in that the cross-sectional area of the second conduit (12) is located at 50% of the cross-sectional area of the first conduit, the junction between the first conduit and the second conduit gradually transitioning.
8. The hydraulic system flow sensor of any one of claims 1-6, wherein the cross-sectional area of the sense tube is 10% of the cross-sectional area of the first conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210384318.9A CN115060331B (en) | 2022-04-13 | 2022-04-13 | Hydraulic system flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210384318.9A CN115060331B (en) | 2022-04-13 | 2022-04-13 | Hydraulic system flow sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115060331A true CN115060331A (en) | 2022-09-16 |
| CN115060331B CN115060331B (en) | 2024-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210384318.9A Active CN115060331B (en) | 2022-04-13 | 2022-04-13 | Hydraulic system flow sensor |
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| CN (1) | CN115060331B (en) |
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|---|---|---|---|---|
| CA676414A (en) * | 1963-12-17 | S. Taylor William | Measuring apparatus | |
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| CN206904286U (en) * | 2017-07-20 | 2018-01-19 | 台州友喜阀门有限公司 | A kind of pressure regulation ball valve |
| CN207816377U (en) * | 2018-03-01 | 2018-09-04 | 福建省金皇环保科技有限公司 | A kind of pipeline external clamping flowmeter |
| CN109855692A (en) * | 2019-01-28 | 2019-06-07 | 江苏商贸职业学院 | A kind of method of computer metering fluid flow |
| CN214251107U (en) * | 2021-02-06 | 2021-09-21 | 肇庆新奥燃气有限公司 | Flow stabilizer for preventing flowmeter from overload operation |
-
2022
- 2022-04-13 CN CN202210384318.9A patent/CN115060331B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA676414A (en) * | 1963-12-17 | S. Taylor William | Measuring apparatus | |
| US5231871A (en) * | 1990-03-02 | 1993-08-03 | Hitachi, Ltd. | Hot-electrical-resistance type gas flow meter and internal combustion engine with hot-electrical-resistance type gas flow meter |
| JPH05180677A (en) * | 1991-12-28 | 1993-07-23 | Tokyo Gas Co Ltd | Ultrasonic flow meter |
| WO1997019318A2 (en) * | 1995-11-20 | 1997-05-29 | Water Savers, Inc. | Metering method and apparatus for building structures |
| US5717137A (en) * | 1996-02-01 | 1998-02-10 | Standex International Corporation | Flow monitoring line strainer |
| US20030120437A1 (en) * | 2001-12-21 | 2003-06-26 | Yaosheng Chen | Method and apparatus for on-line monitoring of solid-fuel/air flows |
| CN201034643Y (en) * | 2007-02-02 | 2008-03-12 | 刘志壮 | Venturi type differential pressure liquid flowmeter |
| CN102155477A (en) * | 2011-04-28 | 2011-08-17 | 唐力南 | Rectifier for regulating velocity distribution of elbow pipe |
| CN105823517A (en) * | 2016-05-09 | 2016-08-03 | 西北工业大学 | Differential pressure linear flow meter |
| CN106482794A (en) * | 2016-10-28 | 2017-03-08 | 东风商用车有限公司 | Venturi tube flowmeter of EGR (exhaust gas recirculation) engine |
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| CN206904286U (en) * | 2017-07-20 | 2018-01-19 | 台州友喜阀门有限公司 | A kind of pressure regulation ball valve |
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| CN109855692A (en) * | 2019-01-28 | 2019-06-07 | 江苏商贸职业学院 | A kind of method of computer metering fluid flow |
| CN214251107U (en) * | 2021-02-06 | 2021-09-21 | 肇庆新奥燃气有限公司 | Flow stabilizer for preventing flowmeter from overload operation |
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| Publication number | Publication date |
|---|---|
| CN115060331B (en) | 2024-06-18 |
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