CN206269870U - With collection tangential velocity measurement flow apparatus - Google Patents
With collection tangential velocity measurement flow apparatus Download PDFInfo
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- CN206269870U CN206269870U CN201621438842.6U CN201621438842U CN206269870U CN 206269870 U CN206269870 U CN 206269870U CN 201621438842 U CN201621438842 U CN 201621438842U CN 206269870 U CN206269870 U CN 206269870U
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Abstract
There are collection tangential velocity measurement flow apparatus the utility model discloses one kind, it is characterized in that along the fluid of measurement body axial direction streamlined flow deflecting will be produced to form the fluid of the flowing that rotates in a circumferential direction by slipstream maker by the slipstream maker that fluid upstream end in measurement pipe body is provided with, by ultrasonic wave test the speed part gather rotational flow fluid slipstream rate signal information, and be uploaded in calculator and calculated, corresponding ultrasonic wave is set to test the speed part when most short standard axial direction mounting distance is shorter than, its transceiver path can be lengthened arbitrarily as needed, it is novel with structure, certainty of measurement is high, disturbed before anti-table, disassembling, assembling and replacing part is convenient, maintenance cost is low, compact conformation, the degree of modularity is high, the low advantage of construction cost.
Description
Technical field
It is specifically a kind of that there is collection tangential velocity measurement flow dress the present invention relates to flow measurement technology field
Put.
Background technology
At present, application of the supersonic technique in terms of measurement of fluid flow is more and more extensive, ultrasonic water meter, ultrasound
Ripple calorimeter, ultrasonic wave gas meter, ultrasonic flowmeter progressively turn into the main product in market, and ultrasonic wave is in the fluid of flowing
The information of upper rate of flow of fluid is just carried during propagation.Therefore the ultrasonic wave by receiving can just detect the flow velocity of fluid, so that
It is converted into flow.According to the principle to signal detection, current ultrasonic flowmeter can substantially divide propagation speed differential method (including：Directly
Connect time difference method, time difference method, phase difference method, frequency-difference method), beam deviation method, Doppler method, correlation method, spatial filtering method and noise
The types such as method.In order to accurately obtain the flow rate information of fluid, traditional ultrasonic flowmeter is along body axial direction cloth
Transducer is put, so as to obtain the flow rate information of fluid, fluid flow is extrapolated.
It is well known that the distance between transducer of above-mentioned existing ultrasonic flowmeter must assure that enough effective length
Degree, can be only achieved certainty of measurement, the minimum 45mm of the existing effective measurement distance of ultrasonic flowmeter instrument, and meter body is most
In 200mm, for the measurement of low discharge, in order to reach more accurate certainty of measurement, one is utilized on measurement pipeline section small length
Measurement spacing is lengthened vertically so that effective measurement distance is more than 45mm, and lengthens effectively measurement spacing to reach, and generally adopts
It is obliquely installed with by transducer mounting seat so that the angle of the extension line of axially disposed corresponding ultrasonic transducer group
Become big, take up room big so that the installation number of the ultrasonic transducer group on measurement pipeline section is restricted, and not only makes measurement
Precision be affected, and also result in ultrasonic transducer dismounting and safeguard it is extremely difficult, substantially increase the manufacturing
Cost, make ultrasonic flowmeter price higher；Two is to be provided with least two groups vertically on measurement pipeline section to intersect or parallel
Ultrasonic transducer group, not only increase the installation number of ultrasonic transducer, and, in maintenance or replacing, it is necessary to will peace
Ultrasonic transducer on measurement pipeline section also greatly increases replacing and maintenance cost together with measurement pipeline section integral demounting.
Therefore engineering site substantially still uses mechanical flowmeter, to save construction and operating cost, this machinery
The operation principle of formula flowmeter is the rotation of flow of fluid impeller machinery, and the substantive deficiency of this structure is：One be by
In impeller can not be promoted to rotate compared with small flow, therefore, the data error under minimum flow velocity is very big, have impact on measuring accuracy；
Two is the phase mutual friction due to machine components, and prolonged exercise causes impeller axle to be worn and torn or fouling, similarly influences the standard of metering
Exactness；Three is, because stem-winder is counted using dial, to be only able to display integrated flow, it is impossible to show instantaneous velocity, is difficult to realize
Nobody checks meter and remote control.
In order to solve the above-mentioned technical problem, CN204788528U discloses a kind of ultrasonic heat with water conservancy diversion cross
Scale flow sensor, including body, water inlet end ultrasonic transducer and water side ultrasonic transducer, the tube chamber of body by
Feed water flow chamber, middle part are flowed chamber and go out current chamber composition, and the horizontal cross-section at the central axis in the feed water flow chamber is rectangle, and it is wide
Spend equal with the width of the horizontal cross-section at the central axis in middle part stream chamber；Vertical cross-section at the central axis in feed water flow chamber is
Trapezoidal, its nose width is equal with the width of the vertical cross-section at the central axis in middle part stream chamber, and its rear end width flows with middle part
The width of the horizontal cross-section at the central axis in chamber is equal.The substantive deficiency of this structure is：In order to ensure certainty of measurement, surpass
The distance between transducer of acoustic wave flow meter must assure that enough effective lengths, virtually increase the length of measurement pipeline section
Degree, causes in annual test or fault detect, it is necessary to dismantle measurement pipeline section from pipeline together with whole table, could examine and determine or repair,
Change, cause replacement cost to increase.
And be preferably minimized in order that obtaining replacement cost, although the patent No.：ZL2004 2 0111534.3/ZL 2005 2
0086674.3/ZL 2,008 2 0102881.8 discloses several removable stem-winders, table body pipe that can be in not detaching pipelines
Under conditions of part, directly dismounting stem-winder movement carry out adjustment and change movement, it is a certain degree of reduce working service into
This.But stem-winder can not measure minimum flow；Data processing, transmission can not meet intelligent unmanned demand；Often at present
The mode of rule or whole table change electromagnetic type or ultrasonic type instrument, but replacement cost is high, and installation cost is high.
Up to the present, it is more expensive to manufacture, the difficult, degree of accuracy low these problems low with measuring accuracy of attended operation cannot also
It is resolved on a kind of flowmeter.
The content of the invention
It is an object of the invention to solve the deficiencies in the prior art, there is provided a kind of structure novelty, compact conformation, certainty of measurement
Interference, disassembling, assembling and replacing part are conveniently before high, anti-table, maintenance cost is low, the degree of modularity is high, installation cost is low cuts with collection
To the device of tachometric survey flow.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of device that flow is measured with collection tangential velocity, including measurement body, are provided with super in the measurement pipe body
Sound wave tests the speed part, it is characterised in that the upstream end of fluid is provided with slipstream maker in the measurement pipe body, so that into survey
The fluid of axial streamlined flow produces deflecting to form rotate in a circumferential direction flowing, the slipstream by slipstream maker in buret body
Maker is made up of blade collar, slipstream retainer ring and bladed rotors, and the slipstream retainer ring is fixed on measurement body
End, the blade collar and slipstream retainer ring are arranged concentrically, and the blade collar and slipstream fix interannular circumference array
Bladed rotors are provided with, the guide face of the bladed rotors is tilted with the approach axis of fluid, is beneficial to by inclined blade
The axial direction flowing of fluid is transformed into the flowing that rotates in a circumferential direction by rotor, the corresponding ultrasonic wave part that tests the speed is being shorter than most short mark
When fiducial axis is to mounting distance, its transceiver path can be lengthened arbitrarily as needed, not only with occupying little space, low cost of manufacture
Effect, and, also significantly improve certainty of measurement high.
The angle of inclination of the guide face of bladed rotors of the present invention and fluid approach axis in measurement pipe body 15 ° ~
75 °, it is beneficial to the fluid that the fluid of axial streamlined flow is transformed into the flowing that rotates in a circumferential direction by bladed rotors, to reach change
The effect of flow direction.
Bladed rotors of the present invention can be using distortion curved surface, i.e., root of blade and the measurement body of described bladed rotors
The angle of inclination of axis is 5 ° ~ 45 °, and the outer end of bladed rotors is 35 ° ~ 75 °, the leaf with the angle of inclination of measurement pipe body axis
Piece rotor 1 is gradually formed from 5 ° ~ 45 ° of root of blade to 35 ° ~ 75 ° round and smooth distortion transition of blade exterior, the bladed rotors
The stream round and smooth projection in end c edges is met, and guide face and lee side are connected through round-corner transition, the round and smooth concave in blade rear end d edges,
The lee side e rear ends of blade are lift angle f, to reach under conditions of low pressure loss, the fluid flow guiding of axially flowing are produced
The effect of identical tangential circular motion.
The present invention can be provided with shunting cone, the axial section of the shunting cone in the fluid upstream end of the blade collar
Parabolically shape, is beneficial to and the fluid of axially flowing is shunted, and enters into flow survey by adjacent blades rotor gap
In amount mounting ring body, the effect of shunting is reached.
The present invention can form current stabilization axle in the shunting cone rear end along the measurement body axle center is axially extending, be beneficial to
The fluid of deflecting carries out current stabilization after current stabilization axle is by bladed rotors water conservancy diversion, makes what the ultrasonic transducer of current stabilization axle both sides was measured
Precision is more accurate.
Measurement body of the present invention can be annular in shape, it is also possible in a tubular form, and the measurement body both sides are respectively through buckle
It is fixedly connected with the slipstream retainer ring of slipstream maker, to reach not detaching pipelines, you can ultrasonic drilling machine is changed in calibrating
The effect of core.
When the measurement body is annular in shape, the reflecting surface that ultrasonic wave of the present invention tests the speed in part can be along measurement body
Inwall is circumferentially disposed, and the speculum can be circumferentially disposed along measurement inboard wall of tube body using minute surface, it is also possible in measurement pipe body
Wall is circumferential by being machined into minute surface, the ultrasonic wave test the speed part ultrasonic transducer in measurement body last week to setting
Put, make the transceiver path of the ultrasonic transducer and reflective surface on the same cross section of measurement body, it is right to reach
Pass through ultrasonic transducer by ultrasonic signal in reflective surface by the fluid rotated in a circumferential direction after slipstream maker deflecting
Or in reaching another ultrasonic transducer after multiple reflections, transceiver path is arbitrarily lengthened as needed, reach and significantly improve survey
The effect of accuracy of measurement, then by measurement with fluid rotary direction forward or time difference of reverse flow extrapolates the flow velocity of fluid
And flow, not only solve the problems, such as that low discharge is difficult to the Substantial technical of accurate measurement, but also greatly save prior art
In on measurement body axially arranged multigroup transducer measurement equipment cost and installation cost.
When the measurement body in a tubular form when, the ultrasonic wave in the measurement pipe body test the speed part mounting means for existing
Technology, this is repeated no more.
The present invention is disturbed with structure novelty, compact conformation, certainty of measurement be high, before anti-table, torn open due to using said structure
Dress replacing part is convenient, maintenance cost is low, the degree of modularity is high, the low advantage of installation cost.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is a kind of left view of embodiment of Fig. 1.
Fig. 3 is the left view of another embodiment of Fig. 1.
Fig. 4 is the dimensional structure diagram of the embodiment of the present invention.
Fig. 5 is the decomposition texture schematic diagram of Fig. 4.
Fig. 6 is the dimensional structure diagram of Leaf rotor of the present invention.
Fig. 7 is the right view of Fig. 6.
Fig. 8 is the dimensional structure diagram of slipstream maker of the present invention.
Reference：It is bladed rotors 1, ultrasonic transducer group 2, ultrasonic transducer 2-1, ultrasonic transducer 2-2, anti-
Penetrate face 3, measurement body 4, shunting cone 5, table body 6, blade collar 7, flow measurement installation ring body 8, current stabilization axle 9, bladed rotors
Retainer ring 10, the slipstream maker 12 of transceiver path 11, the closure 15 of 13 buckle of slipstream retainer ring 14.
Specific embodiment
The present invention will be described below in conjunction with the accompanying drawings.
As shown in accompanying drawing 1,2,3, a kind of device that flow is measured with collection tangential velocity, including measurement body, it is described
It is provided with ultrasonic wave in measurement pipe body to test the speed part, it is characterised in that the upstream end of fluid is provided with slipstream in the measurement body 4
Maker 12, so that the fluid into axial streamlined flow in measurement body 4 produces deflecting to be formed by slipstream maker 12
Rotate in a circumferential direction flowing, and as shown in Figure 8, the slipstream maker 12 is by blade collar 7, slipstream retainer ring 13 and blade
Rotor 1 is constituted, and the slipstream retainer ring 13 is fixed on measurement tube end portion, the blade collar 7 and slipstream retainer ring 13
It is arranged concentrically, circumference array is provided with bladed rotors 1 between the blade collar 7 and slipstream retainer ring 13, the bladed rotors 1
Guide face is tilted with the approach axis of fluid, is beneficial to and the axial direction flowing of fluid is transformed into week by inclined bladed rotors
To rotational flow, corresponding ultrasonic wave is set to test the speed part when most short standard axial direction mounting distance is shorter than, its transceiver path
Can arbitrarily lengthen as needed, not only with occupying little space, the effect of low cost of manufacture, and, also significantly improve survey
Accuracy of measurement is high.
The angle of inclination of the guide face of bladed rotors of the present invention 1 and fluid approach axis in measurement pipe body 15 ° ~
75 °, it is beneficial to the fluid that the fluid of axial streamlined flow is transformed into the flowing that rotates in a circumferential direction by bladed rotors 1, is changed with reaching
The effect in fluid direction.
As illustrated in 6,7, bladed rotors of the present invention 1 can be using distortion curved surface, i.e., the leaf of described bladed rotors 1
The angle of inclination of piece root and measurement pipe body axis is 5 ° ~ 45 °, the outer end of bladed rotors 1 and the inclination angle of measurement pipe body axis
It is 35 ° ~ 75 ° to spend, and the bladed rotors 1 gradually round and smooth were distorted from 5 ° ~ 45 ° of root of blade to 35 ° ~ 75 ° of blade exterior
Cross and form, the bladed rotors meet the stream round and smooth projection in end c edges, and guide face and lee side are connected through round-corner transition, the leaf
The round and smooth concave in piece rear end d edges, the lee side e rear ends of blade are lift angle f, to reach under conditions of low pressure loss, by axle
The effect of identical tangential circular motion is produced to the fluid flow guiding of flowing.
The present invention can be provided with shunting cone 5, the axial direction of the shunting cone 5 in the fluid upstream end of the blade collar 7
Section parabolically shape, is beneficial to and the fluid of axially flowing is shunted, and enter into stream by the gap of adjacent blades rotor 1
In measurement mounting ring body, the effect of shunting is reached.
The present invention can form current stabilization axle 9 in the shunting rear end of cone 5 along measurement body 4 axle center is axially extending, with
Beneficial to by current stabilization axle 9 by the water conservancy diversion of bladed rotors 1 after the fluid of deflecting carry out current stabilization, make the ultrasonic wave transducer of the both sides of current stabilization axle 9
The precision that device 2 is measured is more accurate.
Measurement body of the present invention can be annular in shape, it is also possible in a tubular form, and the measurement body both sides are respectively through buckle
It is fixedly connected with the slipstream retainer ring of slipstream maker, to reach not detaching pipelines, you can ultrasonic drilling machine is changed in calibrating
The effect of core.
As shown in accompanying drawing 2,3,4,5, when the measurement body is annular in shape, ultrasonic wave of the present invention tests the speed in part
Reflecting surface can be circumferentially disposed along measurement inboard wall of tube body, and the speculum 3 can be circumferentially disposed along measurement inboard wall of tube body using minute surface,
Can also be circumferential by being machined into minute surface in measurement inboard wall of tube body, the test the speed ultrasonic transducer of part of the ultrasonic wave exists
Measurement body last week, to setting, makes the ultrasonic transducer 2 and the transceiver path 11 of the reflection of reflecting surface 3 in the same of measurement body
On one cross section, ultrasonic transducer is passed through by ultrasound to the fluid by being rotated in a circumferential direction after slipstream maker deflecting to reach
Ripple signal is reached in another ultrasonic transducer 2-2 after reflective surface or multiple reflections, transceiver path is appointed as needed
Meaning is lengthened, and reaches the effect for significantly improving certainty of measurement, then by measurement with fluid rotary direction forward or reverse flow when
Between differ from and extrapolate the flow velocity and flow of fluid, not only solve the problems, such as that low discharge is difficult to the Substantial technical of accurate measurement, and
And also greatly save axially arranged multigroup transducer is measured on measurement body in the prior art equipment cost and be mounted to
This.
When the measurement body in a tubular form when, the ultrasonic wave in the measurement pipe body test the speed part mounting means for existing
Technology, this is repeated no more.
When installing, first circumference installs reflecting surface to the present invention in measurement pipe body, and the reflecting surface 3 can use mirror
Circumferentially inlayed along measurement inboard wall of tube body in face, it is also possible to which flow measurement is installed into the inwall of ring body 8 circumferentially by being machined into minute surface,
The test the speed ultrasonic transducer 2 of part of ultrasonic wave is set along measurement body circumference, then by slipstream maker through buckle 14
It is fixed on measurement body, and the measurement body of slipstream maker will be fixed with and be sealingly mounted in table body 6, finally by ultrasound
Wave transducer 2 is connected with calculator.
When fluid is measured, fluid enters in measurement body the present invention, shunts cone 5 by the divided fluid stream of axially flowing,
The bladed rotors 1 that the fluid of shunting is flowed into along the gap of adjacent blades rotor 1 and is inclined by under the pressure effect of fluid become
The fluid rotated in a circumferential direction to formation, meanwhile, the fluid of rotation in measurement pipe body by the current stabilization of current stabilization axle 9 after, along the He of current stabilization axle 9
Measurement pipe body space is rotated in a circumferential direction, and now, ultrasonic signal is transmitted to reflecting surface 3, ultrasonic wave transducer by a ultrasonic transducer
Device 2-1 by the reflection for measuring the reflecting surface 3 that inboard wall of tube body circumference is provided with or reaches another ultrasonic waves after circumferential multiple reflections
In energy device 2-2, then inversely launched by ultrasonic transducer 2-2, reflected and received by ultrasonic transducer 2-1, make ultrasonic wave
The fluid rotary direction circumference distance operation that signal circumferentially flows in measurement pipe body, then fluid is collected by calculator
Direction of rotation forward or reverse flow time so that the information of the time difference doubles accumulation, and be uploaded to calculator, calculator leads to
The difference of time and time is crossed, the circumferential flow velocity and flow of fluid is calculated, certainty of measurement is not only significantly improved, and significantly
Save in the prior art in order to improve certainty of measurement, it is necessary to lengthen axial measurement distance, and then lengthened the essence of measurement body
Property it is not enough, greatly save equipment cost and replacement cost.
When needing to safeguard instrument, the closure on table body is opened, the card between body and slipstream maker will be measured
Cramp out, you can measurement body and/or slipstream maker are taken out from table body, part of damage is changed；Work as needs
When instrument is determined in reinspection, the closure on table body is opened, measurement body and slipstream maker can together be taken out, then process is installed
The new measurement body and slipstream maker of calibrating, and fixation is sealed by closure and fixed seat.
As shown in Figure 3, a kind of embodiment of the invention, is provided with five pieces of reflectings surface in the measurement pipe body（Mirror）, make
Ultrasonic signal forms the operation of longer distance in the presence of reflecting surface in fluid rotary direction, so that the time of collection
The order of magnitude of information is increased, and time and the time difference of calculating amplify, and significantly improve Small flowrate measurement precision, instead of existing skill
Art is by axially increased multigroup transducer on measurement body come the substance deficiency of accurate measurement axial velocity.
Shown in accompanying drawing 4, slipstream maker, measurement pipe before being fixed with successively vertically along fluid upstream end in the table body
Flow measurement is installed ring body by body, rear slipstream maker, the preceding slipstream maker and rear slipstream maker through buckle
It is fixed together, be beneficial to realization carries out bidirectional measuring to fluid, when movement is assembled, ring body and slipstream are installed in flow measurement
The slipstream retainer ring of maker is arranged in the flow measurement device mounting groove of table body, then, by closure by circumferential survey
The device for measuring ultrasonic wave flow of amount is fixed in table body, when needing to examine and determine or damage maintenance, without table body is connected from pipeline
Dismounting is connected, only closure need to be opened, ring body is installed into flow measurement and slipstream maker is taken out together, then installed by inspection
Ring body and slipstream maker are installed in fixed new flow measurement, then closure and fixed seat are sealed into fixed.
The present invention is disturbed with structure novelty, compact conformation, certainty of measurement be high, before anti-table, torn open due to using said structure
Dress replacing part is convenient, maintenance cost is low, the degree of modularity is high, the low advantage of installation cost.
Claims (9)
1. a kind of device that flow is measured with collection tangential velocity, including measurement body, ultrasound is provided with the measurement pipe body
Ripple tests the speed part, it is characterised in that the upstream end of fluid is provided with slipstream maker in the measurement pipe body, so that into measurement
The fluid of axial streamlined flow produces deflecting to form the flowing that rotates in a circumferential direction, the slipstream life by slipstream maker in body
Grow up to be a useful person and be made up of blade collar, slipstream retainer ring and bladed rotors, the slipstream retainer ring is fixed on measurement tube end
Portion, the blade collar and slipstream retainer ring are arranged concentrically, and the blade collar and slipstream are fixed interannular circumference array and set
There are bladed rotors, the guide face of the bladed rotors is tilted with the approach axis of fluid.
2. it is according to claim 1 a kind of with the device for gathering tangential velocity measurement flow, it is characterised in that the leaf
The angle of inclination of fluid approach axis is at 15 ° ~ 75 ° in the guide face and measurement pipe body of piece rotor.
3. it is according to claim 2 a kind of with the device for gathering tangential velocity measurement flow, it is characterised in that the leaf
Piece rotor is 5 ° ~ 45 ° with the angle of inclination of measurement pipe body axis using distortion curved surface, i.e., the root of blade of described bladed rotors,
The outer end of bladed rotors and the angle of inclination of measurement pipe body axis are 35 ° ~ 75 °, the bladed rotors by 5 ° of root of blade ~
45 ° gradually form to 35 ° ~ 75 ° round and smooth distortion transition of blade exterior, and the bladed rotors meet the stream round and smooth projection in end c edges, and
Guide face and lee side are connected through round-corner transition, the round and smooth concave in blade rear end d edges, and the lee side e rear ends of blade are liter
Angle f.
4. a kind of with the device for gathering tangential velocity measurement flow according to claim 1 or 2 or 3, it is characterised in that
The fluid upstream end of the blade collar is provided with shunting cone, the axial section of the shunting cone parabolically shape.
5. it is according to claim 4 a kind of with the device for gathering tangential velocity measurement flow, it is characterised in that described point
Flow cone body rear end forms current stabilization axle along the measurement body axle center is axially extending.
6. it is according to claim 1 a kind of with the device for gathering tangential velocity measurement flow, it is characterised in that the survey
Buret body both sides are fixedly connected through buckle with the slipstream retainer ring of slipstream maker respectively.
7. it is according to claim 6 a kind of with the device for gathering tangential velocity measurement flow, it is characterised in that the survey
Buret body is annular in shape.
8. it is according to claim 6 a kind of with the device for gathering tangential velocity measurement flow, it is characterised in that the survey
Buret body is in a tubular form.
9. it is according to claim 7 a kind of with the device for gathering tangential velocity measurement flow, it is characterised in that when described
When measurement body is annular in shape, the reflecting surface that the ultrasonic wave tests the speed in part can be circumferentially disposed along measurement inboard wall of tube body, described super
Sound wave test the speed part ultrasonic transducer in measurement body last week to setting, make the ultrasonic transducer and reflective surface
Transceiver path measurement body same cross section on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621438842.6U CN206269870U (en) | 2016-12-26 | 2016-12-26 | With collection tangential velocity measurement flow apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621438842.6U CN206269870U (en) | 2016-12-26 | 2016-12-26 | With collection tangential velocity measurement flow apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206269870U true CN206269870U (en) | 2017-06-20 |
Family
ID=59047648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621438842.6U Withdrawn - After Issue CN206269870U (en) | 2016-12-26 | 2016-12-26 | With collection tangential velocity measurement flow apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206269870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768105A (en) * | 2016-12-26 | 2017-05-31 | 威海市天罡仪表股份有限公司 | The method and device of flow is measured with collection tangential velocity |
| CN107234052A (en) * | 2017-07-26 | 2017-10-10 | 王琰 | The transmitter acoustic-electrical transducer of ultrasonic water meter, heat energy meter |
-
2016
- 2016-12-26 CN CN201621438842.6U patent/CN206269870U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768105A (en) * | 2016-12-26 | 2017-05-31 | 威海市天罡仪表股份有限公司 | The method and device of flow is measured with collection tangential velocity |
| WO2018121134A1 (en) * | 2016-12-26 | 2018-07-05 | 威海市天罡仪表股份有限公司 | Flow measurement method and apparatus with tangential speed acquisition |
| CN106768105B (en) * | 2016-12-26 | 2019-12-31 | 威海市天罡仪表股份有限公司 | Method and device for collecting tangential velocity measurement flow |
| CN107234052A (en) * | 2017-07-26 | 2017-10-10 | 王琰 | The transmitter acoustic-electrical transducer of ultrasonic water meter, heat energy meter |
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170620 Effective date of abandoning: 20191231 |
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| AV01 | Patent right actively abandoned |