CN106841663A - The strain-type pipe flow speed sensor and application method of a kind of vibration plate structure - Google Patents
The strain-type pipe flow speed sensor and application method of a kind of vibration plate structure Download PDFInfo
- Publication number
- CN106841663A CN106841663A CN201510880923.5A CN201510880923A CN106841663A CN 106841663 A CN106841663 A CN 106841663A CN 201510880923 A CN201510880923 A CN 201510880923A CN 106841663 A CN106841663 A CN 106841663A
- Authority
- CN
- China
- Prior art keywords
- vibrating reed
- fixed plate
- fixed
- pipeline
- stationary plane
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
Landscapes
- Measuring Volume Flow (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
The present invention relates to the strain-type pipe flow speed sensor and application method of a kind of vibration plate structure, including substrate, substrate includes a fixed plate and the stationary plane positioned at fixed plate both sides, wherein being fixed with vibration chip arrays in fixed plate；Vibration chip arrays include fixed mount and the array vibrating reed between fixed mount, and vibrating reed is interconnected by connecting filament and is connected with fixed plate；A closure is additionally provided with fixed plate back, resistance strain gage is connected between closure and fixed plate back；Pipeline gauge also includes data processing circuit, data processing circuit includes the converter that pressure sensor data is converted into electric signal being connected with each pressure sensor, and the data processor being connected with the converter of each pressure sensor, the electric signal that each converter is exported is calculated and changed by data processor.
Description
Technical field
The present invention relates to the strain-type pipe flow speed sensor and application method of a kind of vibration plate structure, belong to pipe flow speed sensor field.
Background technology
Current meter, by field, can be divided into several major classes such as mechanical, optical profile type, sound wave formula as an equipment for measurement water velocity, wherein：
Optical profile type and sound wave formula have accuracy of data acquisition high, and flow rate feedback is used in some high-accuracy use fields extensively in the absence of the influence such as decay in time, on pipe flow speed, such as：Accurate conveying equipment for fluid substances test such as pharmacy, accurate chemical industry, fluid model foundation, pipeline and water pump etc.；Optical profile type and acoustics formula are mainly by media such as sound wave, electromagnetic waves, using it under medium different in flow rate, the theories different on sound wave, electromagnetic wave attenuation influence difference, spread speed are manufactured, and its main body includes transmitter and receiver, is high-accuracy equipment；
It is higher in the requirement to environment, it is difficult to use in the environment that the dust contents such as power plant, chemical plant are high, moisture content is high, and such equipment cost is also higher, the applying working condition poor for some environment, need to carry out equipment regular maintenance and maintenance, be not well suited for the relatively low factory of these unit product profits and use；
Mechanical current meter is generally mounted to inside pipeline,From a structural point,External environment is little on the influence of mechanical current meter,And mechanical current meter typically uses a rotating driving impeller in a fluid,Flow velocity is obtained by driving the rotating speed of impeller,Its agent structure includes the electric generator structure of impeller and a rotation,Simple structure,It is with low cost,It is adapted to some profits low,Usage amount is big,The factory not high to data required precision,But mechanical current meter there is also larger shortcoming,In order to reduce the difficulty of digital simulation,The pivot center of general impeller and the axis coaxle of pipeline,Fluid heads on towards impeller flowing,So impeller is very huge to the decay that rate of flow of fluid in pipeline brings,The not only possible flow velocity caused in pipeline is unable to reach working index,The flow velocity of this kind of structure is nor very accurate simultaneously,Typically can only be according in the tail pipe position of pipeline structure,Use scope also very little；
Such asZL201110251948.0A kind of mechanical current meter for proposing, it uses a large-scale impeller to realize the detection to flow velocity, this current meter flow resistance is larger, lift demand to fluid driven pumps is higher, and it is also larger to the flow rate attenuation that whole pipeline brings, in addition, this current meter is generally required and is connected in series in pipeline, if necessary to be installed to existing pipeline, so need to be dismantled existing pipeline, integrated engineering amount is larger, the current meter of rotary type is not if the quality of impeller is high in addition, also certain shake can be brought to pipeline during rotation, influence the life-span of pipeline.
The content of the invention
The technical problem to be solved in the present invention is：Overcome optics, acoustics formula current meter high cost, the technical problem such as vane current-meter flow resistance big, installation difficulty, there is provided the strain-type pipe flow speed sensor and application method of a kind of vibration plate structure high using annular requirement in the prior art.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of strain-type pipe flow speed sensor of vibration plate structure, including elastic base plate, the elastic base plate include a fixed plate and the stationary plane positioned at fixed plate both sides, wherein being provided with vibrating reed array mechanism in the fixed plate；
The vibrating reed array mechanism includes the fixed mount installed in two of fixed plate one side, the fixed mount opposing fixed plate middle part is symmetrical, array is machined with and some mounts hole on the fixed mount, array is provided with some vibrating reeds between the fixed mount, the both sides of the vibrating reed are respectively clamped into and mount in hole, vibrating reed is arc, the two ends of the vibrating reed are provided with sectional area and are more than the limited block for mounting hole area, connecting filament between the vibrating reed by some hard is connected, and the connecting filament between the vibrating reed and fixed plate of top by hard is connected；
Fixed plate is made of elastomeric material, and array is machined with some swinging chutes vertical with vibrating reed axis on the opposite side of the fixed plate, and some swing pieces are connected with the swinging chute, and swinging piece can swing along swinging chute；
A closure is additionally provided with the stationary plane top, connection is closed between the closure edge and fixed plate, an expansion cavity is provided between the closure and fixed plate, the two ends of vibrating reed are provided with two expansion buckles of projection in supporting plate, high-pressure inert gas are filled with the expansion cavity, the expansion buckle is clamped on the opening of pipeline wall under the driving of expansion cavity；
One fixing band is installed in the closure, some fixed covers are provided with the fixing band, an oscillating deck is fixed with the fixed cover, connected by resistance strain gage between the oscillating deck and swing piece；
The pipeline gauge also includes data processing circuit, the data processing circuit include be connected with each resistance strain gage by resistance strain gage data conversion into electric signal converter, and the data processor being connected with the converter of each resistance strain gage, the electric signal that each converter is exported is calculated and changed by data processor, and actual flow velocity is shown by data display equipment；
The stationary plane includes a binding face corresponding with pipeline outer wall face, and annular opening is machined with the end of the stationary plane, constitutes a retainer ring, and a boot band is provided between two retainer rings of stationary plane.
Used as further innovation of the invention, the connecting filament of hard is stainless steel wire.
Used as further innovation of the invention, the resistance-strain chip arrays are laterally divided into mesozone and along floor area, the both sides that mesozone is located at along floor area, sensitivity of the sensitivity along floor area resistance strain gage more than mesozone resistance strain gage.
As further innovation of the invention, vibration damping area is provided between the supporting plate and stationary plane, the thickness in the vibration damping area is less than supporting plate, the thickness of stationary plane, and vibration damping area is continuous zigzag buffer structure.
As further innovation of the invention, the boundary position of the supporting plate and stationary plane is provided with a sealed gluing block for bar shaped, the sealed gluing block is contacted with pipeline wall.
A kind of application method of the strain-type pipe flow speed sensor of vibration plate structure, including following several steps：
The first step, install, a square opening is cut on the pipeline wall for treat measurement of discharge, aperture area is configured according to the projected area in the plane of fixed substrate, this current meter is encased in opening, so that vibrating reed is extend into pipeline, stationary plane is fixed on the wall of pipeline by adhesive or screw；
Second step, test, the path of opening conduits so that the fluid filled with certain flow rate in pipeline, and ensure vibrating reed at least percent 50, do not leaked in fluid media (medium), and between opening and current meter；
3rd step, data acquisition, the speed of fluid is increased into normal operating conditions, so that the fluid under normal operating conditions produces disturbance to array east so that vibrating reed drives fixed plate to be under certain dither state, is deformed by the shake of fixed plate, so that resistance strain gage is stretched or loosens, by the collection to each resistance-strain sheet data, the swing degree and hunting frequency of vibrating reed can be obtained, flow velocity of the fluid in different fluid layer positions can be obtained by correlometer formula.
The beneficial effects of the invention are as follows：
1st, this structure in pipeline by installing several vibrating reeds, by the fluid different in flow rate principle different to vibrating reed disturbing influence, realize the measurement to flow velocity, compared to the current meter of vane type, the decay of fluid flow rate is smaller, in addition to vibrating reed surface is along layer resistance, the flow rate effect brought to pipeline is smaller, and the flow velocity of whole pipeline will not be had influence on because of single current meter.
2nd, the vibrating reed contact area of this structure is big, and is connected by connecting filament, and globality is strong, and intensity is high, it is not easy to be damaged.
3rd, expansion cavity can cause that this current meter is applied in some fluid operating pressures occasion higher so that this structure will not be excessive because of fluid compression pressure change so that this product is discharged by high pressure.
4th, the vibrating reed of arc can further expand the contact area of vibrating reed.
5th, this current meter can be open and be installed by cutting machine to existing pipeline, simple and convenient, it is not necessary to dismantle some line segments, compared to vane type, install complexity lower.
6th, the fixing band of this current meter can some be inconvenient to bond and the tube wall of screw bore on realize the fixation of current meter.
7th, the vibration damping area of this current meter can effectively reduce the effect of jitter that vibrating reed brings to overall pipeline, compared to vane current-meter, more stability.
8th, to take into account in pipeline diverse location pipeline different along layer resistance for the vibrating reed of multilayer, the also different problem of flow velocity, in order to ensure flow velocity, in order to the flow-disturbing of compensation vibration piece diverse location influences the more different problems that pipeline wall position flow rate detection may be caused inaccurate, this structural improvement precision of diverse location vibrating reed sensor, control cost, it is ensured that the precision of whole equipment.
9th, closure can be when current meter be in the poor operating mode of some environment, it is ensured that pressure sensor is not corroded by steam, air and some active gases, is also not susceptible to the influence of ambient pressure.
10th, the constant interval size of fixed plate is driven to recognize flow velocity when this structure is mainly disturbed using vibrating reed, so for vibrating reed manufacture when required precision it is lower, the vane current-meter higher compared to mass balance requirement degree, this structure product control requirement is lower, manufacturing cost can be effectively reduced, shortens manufacturing time.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is generalized section of the invention.
In figure：1st, fixed mount；2nd, fixed plate；3rd, stationary plane；4th, vibration absorber；5-1, resistance strain gage；5-2, oscillating deck；5-3, swing piece；6th, closure；7th, valve；8th, vibrating reed；9th, connecting filament；10th, sealed gluing block；11st, expansion buckle；12nd, retainer ring；13rd, boot band；14th, fixing band；A mesozones；B, along floor area.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, and basic structure of the invention is only illustrated in a schematic way, therefore it only shows the composition relevant with the present invention.
Such as Fig. 1, a kind of strain-type pipe flow speed sensor of vibration plate structure, including elastic base plate, the elastic base plate include a fixed plate and the stationary plane positioned at fixed plate both sides, wherein being provided with vibrating reed array mechanism in the fixed plate；
The vibrating reed array mechanism includes the fixed mount installed in two of fixed plate one side, the fixed mount opposing fixed plate middle part is symmetrical, array is machined with and some mounts hole on the fixed mount, array is provided with some vibrating reeds between the fixed mount, the both sides of the vibrating reed are respectively clamped into and mount in hole, vibrating reed is arc, the two ends of the vibrating reed are provided with sectional area and are more than the limited block for mounting hole area, stainless steel wire between the vibrating reed by some hard is connected, stainless steel wire between the vibrating reed and fixed plate of top by hard is connected；
Fixed plate is made of elastomeric material, and array is machined with some swinging chutes vertical with vibrating reed axis on the opposite side of the fixed plate, and some swing pieces are connected with the swinging chute, and swinging piece can swing along swinging chute；
A closure is additionally provided with the stationary plane top, connection is closed between the closure edge and fixed plate, an expansion cavity is provided between the closure and fixed plate, the two ends of vibrating reed are provided with two expansion buckles of projection in supporting plate, high-pressure inert gas are filled with the expansion cavity, the expansion buckle is clamped on the opening of pipeline wall under the driving of expansion cavity；
One fixing band is installed in the closure, some fixed covers are provided with the fixing band, an oscillating deck is fixed with the fixed cover, connected by resistance strain gage between the oscillating deck and swing piece, the resistance-strain chip arrays are laterally divided into mesozone and along floor area, the both sides that mesozone is located at along floor area, sensitivity of the sensitivity along floor area resistance strain gage more than mesozone resistance strain gage；
The pipeline gauge also includes data processing circuit, the data processing circuit include be connected with each resistance strain gage by resistance strain gage data conversion into electric signal converter, and the data processor being connected with the converter of each resistance strain gage, the electric signal that each converter is exported is calculated and changed by data processor, and actual flow velocity is shown by data display equipment；
The stationary plane includes a binding face corresponding with pipeline outer wall face, and annular opening is machined with the end of the stationary plane, constitutes a retainer ring, and a boot band is provided between two retainer rings of stationary plane.
Vibration damping area is provided between the supporting plate and stationary plane, the thickness in the vibration damping area is less than supporting plate, the thickness of stationary plane, and vibration damping area is continuous zigzag buffer structure.
The boundary position of the supporting plate and stationary plane is provided with a sealed gluing block for bar shaped, the sealed gluing block is contacted with pipeline wall.
A kind of application method of the strain-type pipe flow speed sensor of vibration plate structure, it is characterized in that：Including following several steps：
The first step, install, a square opening is cut on the pipeline wall for treat measurement of discharge, aperture area is configured according to the projected area in the plane of fixed substrate, this current meter is encased in opening, so that vibrating reed is extend into pipeline, stationary plane is fixed on the wall of pipeline by adhesive or screw；
Second step, test, the path of opening conduits so that the fluid filled with certain flow rate in pipeline, and ensure vibrating reed at least percent 50, do not leaked in fluid media (medium), and between opening and current meter；
3rd step, data acquisition, the speed of fluid is increased into normal operating conditions, so that the fluid under normal operating conditions produces disturbance to array east so that vibrating reed drives fixed plate to be under certain dither state, is deformed by the shake of fixed plate, so that resistance strain gage is stretched or loosens, by the collection to each resistance-strain sheet data, the swing degree and hunting frequency of vibrating reed can be obtained, flow velocity of the fluid in different fluid layer positions can be obtained by correlometer formula.
Disturbance of the present invention mainly using fluid pair different in flow rate is different, by in lower perturbation amplitude different in flow rate and the different vibrating reed of frequency, drive a shake for flexible fastening plate, realize the detection to fluids within pipes flow velocity, simple structure, without remaining accurate senser element, low cost of manufacture, maintenance cost is low；
During manufacture, the buffer shock-absorbing area of fixed plate, stationary plane and zigzag buffer structure is obtained using a whole stainless steel plate punch process first；
Then it is cut by laser on the stainless steel after punching press, is obtained strip groove and annular opening；
Hole-drilled fixed mount is installed in fixed plate afterwards, vibrating reed is formed using the bending of elastic stainless steel thin slice；Vibrating reed two ends are inserted into mounting hole, while vibrating reed two ends crimping, prevents vibrating reed from deviating from, by welded and installed connecting filament, and in fixed plate top fluting；
Fixing band, and the flexible installing resistance strain gage between fixing band and fluting are installed in closure；
After installation, closure is installed, you can complete the production of product；
During installation, duct wall is cut first, by expansion buckle, this sensor is snapped onto at the cutting openings of pipeline, then it is fixed by socket band, sealing joint strip and sealed film further according to specific situation selection different size carry out the installation and sealing debugging of this product, expansion cavity are inflated after installation so that the empty cavity pressure of expansion is relative with fluids within pipes operating pressure to maintain an equal level.
During measurement, this structure is divided into two regions of A, B, is hindered along laminar flow for different respectively, devises mesozone and along floor area so that two precision of the resistance strain gage in region are different, while the precision of rate of flow of fluid detection is ensured, reduces the cost of equipment；
The spoiler of vibrating reed is subject to the driving of fluid and shakes, in shake, the power of disturbance embodies on the shorter swing part of the arm of force, because disturbance, elastic deformation piece is compressed so that plastic deformation band is stretched, and the resistance value of resistance strain gage changes, actual local velocity value can be changed into by related flow-disturbing formula by measuring the resistance change data for obtaining, then change the situation of the flow velocity and viscosity that are obtained with fluids within pipes by correlation matrix.
With above-mentioned according to desirable embodiment of the invention as enlightenment, by above-mentioned description, relevant staff can carry out various changes and amendments without departing from the scope of the technological thought of the present invention' completely.The technical scope of this invention is not limited to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (6)
1. the strain-type pipe flow speed sensor of a kind of vibration plate structure, it is characterised in that：Including elastic base plate, the elastic base plate includes a fixed plate and the stationary plane positioned at fixed plate both sides, wherein being provided with vibrating reed array mechanism in the fixed plate；
The vibrating reed array mechanism includes the fixed mount installed in two of fixed plate one side, the fixed mount opposing fixed plate middle part is symmetrical, array is machined with and some mounts hole on the fixed mount, array is provided with some vibrating reeds between the fixed mount, the both sides of the vibrating reed are respectively clamped into and mount in hole, vibrating reed is arc, the two ends of the vibrating reed are provided with sectional area and are more than the limited block for mounting hole area, connecting filament between the vibrating reed by some hard is connected, and the connecting filament between the vibrating reed and fixed plate of top by hard is connected；
Fixed plate is made of elastomeric material, and array is machined with some swinging chutes vertical with vibrating reed axis on the opposite side of the fixed plate, and some swing pieces are connected with the swinging chute, and swinging piece can swing along swinging chute；
A closure is additionally provided with the stationary plane top, connection is closed between the closure edge and fixed plate, an expansion cavity is provided between the closure and fixed plate, the two ends of vibrating reed are provided with two expansion buckles of projection in supporting plate, high-pressure inert gas are filled with the expansion cavity, the expansion buckle is clamped on the opening of pipeline wall under the driving of expansion cavity；
One fixing band is installed in the closure, some fixed covers are provided with the fixing band, an oscillating deck is fixed with the fixed cover, connected by resistance strain gage between the oscillating deck and swing piece；
The pipeline gauge also includes data processing circuit, the data processing circuit include be connected with each resistance strain gage by resistance strain gage data conversion into electric signal converter, and the data processor being connected with the converter of each resistance strain gage, the electric signal that each converter is exported is calculated and changed by data processor, and actual flow velocity is shown by data display equipment；
The stationary plane includes a binding face corresponding with pipeline outer wall face, and annular opening is machined with the end of the stationary plane, constitutes a retainer ring, and a boot band is provided between two retainer rings of stationary plane.
2. the strain-type pipe flow speed sensor of a kind of vibration plate structure as claimed in claim 1, it is characterised in that：The connecting filament of hard is stainless steel wire.
3. the strain-type pipe flow speed sensor of a kind of vibration plate structure as claimed in claim 1, it is characterized in that：The resistance-strain chip arrays are laterally divided into mesozone and along floor area, the both sides that mesozone is located at along floor area, sensitivity of the sensitivity along floor area resistance strain gage more than mesozone resistance strain gage.
4. the strain-type pipe flow speed sensor of a kind of vibration plate structure as claimed in claim 1, it is characterized in that：Vibration damping area is provided between the supporting plate and stationary plane, the thickness in the vibration damping area is less than supporting plate, the thickness of stationary plane, and vibration damping area is continuous zigzag buffer structure.
5. the strain-type pipe flow speed sensor of a kind of vibration plate structure as claimed in claim 1, it is characterized in that：The boundary position of the supporting plate and stationary plane is provided with a sealed gluing block for bar shaped, the sealed gluing block is contacted with pipeline wall.
6. a kind of application method of the strain-type pipe flow speed sensor of a kind of vibration plate structure as claimed in claim 1, it is characterized in that：Including following several steps：
The first step, install, a square opening is cut on the pipeline wall for treat measurement of discharge, aperture area is configured according to the projected area in the plane of fixed substrate, this current meter is encased in opening, so that vibrating reed is extend into pipeline, stationary plane is fixed on the wall of pipeline by adhesive or screw；
Second step, test, the path of opening conduits so that the fluid filled with certain flow rate in pipeline, and ensure vibrating reed at least percent 50, do not leaked in fluid media (medium), and between opening and current meter；
3rd step, data acquisition, the speed of fluid is increased into normal operating conditions, so that the fluid under normal operating conditions produces disturbance to array east so that vibrating reed drives fixed plate to be under certain dither state, is deformed by the shake of fixed plate, so that resistance strain gage is stretched or loosens, by the collection to each resistance-strain sheet data, the swing degree and hunting frequency of vibrating reed can be obtained, flow velocity of the fluid in different fluid layer positions can be obtained by correlometer formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510880923.5A CN106841663A (en) | 2015-12-04 | 2015-12-04 | The strain-type pipe flow speed sensor and application method of a kind of vibration plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510880923.5A CN106841663A (en) | 2015-12-04 | 2015-12-04 | The strain-type pipe flow speed sensor and application method of a kind of vibration plate structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106841663A true CN106841663A (en) | 2017-06-13 |
Family
ID=59149882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510880923.5A Pending CN106841663A (en) | 2015-12-04 | 2015-12-04 | The strain-type pipe flow speed sensor and application method of a kind of vibration plate structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106841663A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143781Y (en) * | 1992-10-27 | 1993-10-13 | 陈轮 | Flow meter for water current in open canal |
| CN202599971U (en) * | 2012-04-23 | 2012-12-12 | 华北电力大学 | Liquid flow rate measuring device based on resistance strain gage |
| CN104502625A (en) * | 2014-11-24 | 2015-04-08 | 北京交通大学 | Three-dimensional muddy water fluctuating velocity instrument |
| CN104569480A (en) * | 2015-02-04 | 2015-04-29 | 西安科技大学 | Liquid impact force and flow velocity measuring instrument and measuring method thereof |
| CN204347056U (en) * | 2014-12-31 | 2015-05-20 | 重庆交通大学 | Current sillometer |
-
2015
- 2015-12-04 CN CN201510880923.5A patent/CN106841663A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143781Y (en) * | 1992-10-27 | 1993-10-13 | 陈轮 | Flow meter for water current in open canal |
| CN202599971U (en) * | 2012-04-23 | 2012-12-12 | 华北电力大学 | Liquid flow rate measuring device based on resistance strain gage |
| CN104502625A (en) * | 2014-11-24 | 2015-04-08 | 北京交通大学 | Three-dimensional muddy water fluctuating velocity instrument |
| CN204347056U (en) * | 2014-12-31 | 2015-05-20 | 重庆交通大学 | Current sillometer |
| CN104569480A (en) * | 2015-02-04 | 2015-04-29 | 西安科技大学 | Liquid impact force and flow velocity measuring instrument and measuring method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105612410B (en) | For monitoring the sensor of rheology Complex Flows | |
| US8596141B2 (en) | Vortex flow meter with vortex oscillation sensor plate | |
| CN202974353U (en) | System and device for providing uniform fluid temperature in ultrasonic flowmeter | |
| US10416009B1 (en) | Vortex shedding flowmeter with wide dynamic range piezoelectric vortex sensor | |
| CN106841669A (en) | A kind of elastic strain formula pipe flow speed sensor and application method | |
| EP0197042B1 (en) | Reference pressure devices for calibrating pressure-measuring instruments | |
| CN106841664A (en) | A kind of pipeline gauge and application method | |
| US11604127B2 (en) | Methods for detecting pipeline weakening | |
| CN106841668A (en) | The pipe flow speed sensor and application method of a kind of fixed blade wheel structure | |
| CN2859465Y (en) | Strain target-type flowmeter | |
| US11726019B2 (en) | Viscous damper fluid viscosity monitoring device and method based on piezoceramic transducers | |
| CN106841667A (en) | A kind of elastic strain chip pipeline gauge and application method | |
| CN106841663A (en) | The strain-type pipe flow speed sensor and application method of a kind of vibration plate structure | |
| CN103124898A (en) | A vibrating meter including a damped meter component | |
| CN106841666A (en) | A kind of pipe flow speed sensor and application method | |
| US4380935A (en) | External sensing vortex flowmeter | |
| CN106841665A (en) | A kind of elastic strain resistance wire type pipeline gauge and application method | |
| CN111829934A (en) | Fracture network shear-two-phase flow test device and test method | |
| CN109115135B (en) | Experimental device and experimental method for vibration deformation of production pipe column of inclined bending gas well | |
| CN111272125A (en) | System for measuring shield tail clearance and measuring method thereof | |
| CN106841671A (en) | A kind of spring-piece type pipeline gauge and application method | |
| Ohmi et al. | Pressure and Velocity Distributions in Pulsating Turbulent Pipe Flow Part 2 Experimental Investigations | |
| US5094100A (en) | Method and apparatus for measuring shear stress | |
| CN107830979A (en) | Visualize guide's cobalt target piece cobalt rod Flow vibration experimental provision | |
| De Santo | Added mass and hydrodynamic damping of perforated plates vibrating in water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170613 |
|
| WD01 | Invention patent application deemed withdrawn after publication |