CN102353406A - Flowmeter with middle through-hole movable throttling element connected with elastic membranes or bellows - Google Patents
Flowmeter with middle through-hole movable throttling element connected with elastic membranes or bellows Download PDFInfo
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- CN102353406A CN102353406A CN 201110187493 CN201110187493A CN102353406A CN 102353406 A CN102353406 A CN 102353406A CN 201110187493 CN201110187493 CN 201110187493 CN 201110187493 A CN201110187493 A CN 201110187493A CN 102353406 A CN102353406 A CN 102353406A
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Abstract
The invention discloses a flowmeter with a middle through-hole movable throttling element connected with elastic membranes or a bellows, which belongs to the throttling flowmeter in the automatic detection technical field; the patent 'a middle through-hole movable throttling element flowmeter' depends on the thrust of the movable throttling element, and does not like a fixed throttling element which measures the flow according to the flow differential pressure, so a pressure pipe can be dispensed, the flowmeter is applicable to measuring small calibers and dirty liquids, the isolation, the pressure-bearing, the support and other functions of the flowmeter are all respectively realized through different components, and the integral structure is more complicated. The flowmeter adopts the elastic membranes or the bellows to be connected with the middle through-hole movable throttling element, the isolation, the pressure-bearing, the support and other functions are realized independently by the elastic membranes or the bellows, the integral structure of the flowmeter is greatly simplified, not only are all the advantages of the through-hole movable throttling element obtained, but also a plurality of performances are improved, and the invention makes the through-hole movable throttling element flowmeter which is a novel meter be more easily popularized and used.
Description
Technical field
The present invention relates to a kind of instrument that in the Automatic Measurement Technique field, realizes flow detection.
Background technology
At present, the flow measurement that utilizes Throttle Principle to implement is still most widely used, and employed restriction device major part is the fixation type throttle element, and few part is a dynamic throttling element.In the flowmeter that utilizes Throttle Principle to make, differential pressure flowmeter uses the fixation type throttle element, and target type meter and spinner-type flowmeter use dynamic throttling element.Fixation type throttle element abacus, nozzle and Venturi tube commonly used, they use with a long history, and test figure is complete, and product is standardization, is " standard restriction device " so claim them again.In measurement, orifice plate, nozzle and Venturi tube fixedly mount in pipeline, and fluid flows through from their middle part through hole; The dynamic throttling element of target type meter or spinner-type flowmeter is disk target or the rotor that is suspended in pipeline central authorities, and this dynamic throttling element of disk target or rotor does not have the middle part through hole, and fluid flows through from the annular gap of disk target or rotor and pipeline enclosure.Between fixation type throttle element and the differential pressure gauge connecting pipe is arranged, be inappropriate for and measure dirty medium.In order both to keep each item advantage of orifice plate, nozzle and Venturi tube; Break away from all inconvenience that connecting pipe brings again; In " dynamic throttling element flowmeter of middle part through hole " (patent No. 200910072808.X); Adopted the dynamic throttling element of the middle part through hole of orifice plate, nozzle or Venturi tube profile first; In this flowmeter, detected fluid to the thrust of dynamic throttling element be with the flow of fluid one to one.Above-mentioned flowmeter adopts nonmetallic resilient ring to bring the isolation detected fluid, and detected fluid acts on the pressure on the elastic ring belt, then comes balance by the equilibrium liquid that this pressure can be delivered to watchcase.In addition, the dynamic throttling element in this flowmeter is supported by a pair of moving sets, and the friction force of moving sets had both influenced measuring accuracy, makes the manufacturing of flowmeter and debugging become complicated again.
Summary of the invention
Because above-mentioned middle part through hole dynamic throttling element flowmeter structure is complicated, is unfavorable for promoting the use of of this new flowmeter, therefore, need the simpler middle part of a kind of structure of development through hole dynamic throttling element flowmeter.
The present invention is to solve the technical requirements of the technology program are as follows: As shown in the drawings specification, developed flowmeter is a central through-hole dynamic throttling element connected with the flexible diaphragm or bellows flowmeter, belonging to automatically detect art throttling flow instrumentation; Central hole at each end of the dynamic throttling element to be connected with a flexible diaphragm or bellows; dynamic throttling element connected with the annular elastic membrane, the dynamic throttling element is connected with the inlet side of the inner edge of the elastic diaphragm movable inlet end sealingly connected throttling element, the outer edge sealingly connected with the pipe end, dynamic throttling element is connected with the outlet side of the inner edge of the diaphragm moving throttle outlet end seal member connected to the outer tube sealingly connected with the rear end; movable throttle member is connected with the bellows, the moving cutting element is connected with the inlet side of the right end of the corrugated tube and the inlet end of throttling element movable sealed connection , the left end sealingly connected with the pipe end, dynamic throttling element is connected with the outlet side of the left end of the corrugated tube and the outlet end of the movable cutting member sealingly connected to the right end and the rear end tube sealingly connected, dynamic throttling weight of the components supported by the elastic metal plate strap; housing frame tube located between the pipe end and the rear end, and to the three fixed rigidly coupled to the distance between the two end tube; the seal to form a fluid inlet from the pipe end inflows, followed by flow throttling element hyperactive central through-hole, and then flows out from the rear outlet pipe leak flow path; dirty fluid in the measurement of the occasion, in addition to the above structure, but also the use of two sections with side pipes and move flow components, such as a cylindrical bore metallic material with an elastic sealing ring to prevent the liquid to be measured is larger than the diameter of the region can be reached clogging, two end of the elastic sealing ring, respectively, and movable cutting member The inlet end or outlet end of the sealed connection, two elastic sealing ring, respectively, and the other end of the pipe end or back-end tube seal connected with two elastic sealing rings and two flexible diaphragm or bellows is formed between two called before and after the equilibrium chamber in a closed space to be filled with fluid balance.When measuring flow; The thrust that fluid acts on the dynamic throttling element has definite corresponding relation with the flow that flows through the center through hole; Through power throw-over gear and attached sensor thereof fluid is acted on thrust on the dynamic throttling element and convert corresponding electrical quantity into and change, subsequent process circuit changes this electrical quantity and amplifies, linearization, V/I conversion or the further processing that shows.In the flowmeter of measuring dirty fluid, forward horizontal stand chamber equilibrium liquid pressure is identical with dynamic throttling element inlet resilient seal endless belt detected fluid wall pressure, and back balance chamber equilibrium liquid pressure is identical with dynamic throttling element elasticity of export seal band detected fluid wall pressure.After taking abovementioned technology; Because the inside and outside pressure at both sides of two resilient seal endless belt are identical, not influenced by radial force, therefore less demanding to itself physical strength; Can adopt the non-metallic elastic material manufacturing, to reduce its elastic force that axial displacement applies to dynamic throttling element.
The invention has the beneficial effects as follows; Identical with existing patent " dynamic throttling element flowmeter of middle part through hole "; The flowmeter that middle part through hole dynamic throttling element connects flexible sheet or corrugated tube still utilizes Throttle Principle in measurement, thereby is subject to the influence of extraneous measuring condition unlike the vortex shedding flow meter that kind; Because Venturi tube, nozzle and orifice plate are used as dynamic throttling element, cancel the connecting pipe that differential pressure flowmeter is denounced most again, thereby be difficult for stopping up, and can reduce difficulty of construction; When particularly using Venturi tube as dynamic throttling element; Flowmeter has also that fluid resistance losses is little, tenure of use is long, precision is higher, the part of the trunk line except that connecting pipe also is difficult for advantages such as obstruction, can be applicable in the flow measurement of little caliber and dirty fluid.Existing patent " dynamic throttling element flowmeter of middle part through hole " is compared with the flowmeter that middle part through hole dynamic throttling element connects flexible sheet or corrugated tube; The former buffer fluid leans on the resilient seal endless belt of non-metallic material; Bear detected fluid pressure and rely on the rigid seal housing; Support dynamic throttling element and rely on a pair of moving sets; And the latter can be with isolation; Pressure-bearing; Supporting three functions is independently realized by flexible sheet; Perhaps will isolate; Two functions of pressure-bearing are realized by corrugated tube; And support function is realized by the metal suspender belt that does not produce friction force; Thereby the latter's structure is simpler; It is easier to make; Installation and Debugging are more convenient; Cost performance and precision are higher.
Description of drawings
Fig. 1 is the structure principle chart of first embodiment of the present invention.
Fig. 2 is the structure principle chart of second embodiment of the present invention.
Fig. 3 is the structure principle chart of the 3rd embodiment of the present invention.
Fig. 4 is the structure principle chart of the 4th embodiment of the present invention.
Fig. 5 is the structure principle chart of the 5th embodiment of the present invention.
Fig. 6 is the structure principle chart of the 6th embodiment of the present invention.
1. front tube among the figure, 2. Venturi tube, 3. rear end pipe; 4. casing frame, 5. foil gauge, 6. strained circuit; 7. detection semi-girder, 8. balanced cantilever beam, 9. gear frame; 10. anterior elastic membrane sheet, 11. Descemet sheets, 12. sheet metal suspender belts; 13. preceding corrugated tube, 14. back corrugated tubes, 15. resilient seal endless belt; 16. the forward horizontal stand chamber, back balance chambers 17..
Embodiment
In following six embodiment; In order to reduce fluid resistance losses and to prevent the dirt gathering, dynamic throttling element adopts Venturi tube 2, in some application scenario; Venturi tube 2 also can be replaced by orifice plate or nozzle, and other parts of flowmeter then keep the original structure form constant.
Embodiment one
In the embodiment of Fig. 1; Use the ripple flexible sheet 10,11 of two circular belt edge ripples; The inner edge of circular anterior elastic membrane sheet 10 and Descemet sheet 11 is tightly connected with inlet end and the endpiece of Venturi tube 2 respectively, and anterior elastic membrane sheet 10 is tightly connected with front tube 1 and rear end pipe 3 respectively with the outer rim of Descemet sheet 11.Casing frame 4 is rigidly connected with front tube 1 and rear end pipe 3 each other, thereby can fix two distances between the end pipe, and the effect that miscellaneous part is installed is in the above arranged.Detecting semi-girder 7 is installed on casing frame 4 with balanced cantilever beam 8; Detect on the semi-girder 7 and post foil gauge 5; On balanced cantilever beam 8, do not paste foil gauge, the purpose that balanced cantilever beam 8 is set be balance detection semi-girder 7 produce be unfavorable for Venturi tube 2 axially movable additional moments.When fluid flows through Venturi tube 2; The flow of fluid is big more; Fluid is also big more to the thrust of Venturi tube 2; Venturi tube 2 is detecting this thrust on semi-girder 7 and the balanced cantilever beam 8 through gear frame 9 again; Detect semi-girder 7 and produce the strain corresponding with thrust; Make the foil gauge resistance be attached to the positive and negative strain regions of semi-girder respectively produce differential change, the electric bridge of the differential change of this resistance in strained circuit 6 with export the voltage signal corresponding after amplifier is further handled with thrust.
It is following that detected fluid acts between thrust and the measured flux on the Venturi tube 2 Analysis of Relationship: Venturi tube 2 is placed on the straight horizontal pipeline; Like this; Just only need to consider static energy when the potential energy of research Venturi tube 2 front and back fluids changes, therefore can draw according to fluid mechanics
Where
,
- Venturi tube 2 before and after the fluid acting on the static pressure;
Obviously,
The effective cross section of multiply by Venturi tube 2 is long-pending
A, promptly obtain detected fluid and act on the thrust on the Venturi tube 2
F Venturi tube 2 effective cross sections are long-pending can be calculated as follows
Where
- External pipe diameter;
- Venturi tube 2, the central through-hole diameter.
The effective cross section of Venturi tube 2 is long-pending directly to be based on following consideration by its geometric size calculation: different with the calculating of the useful area of the limited flexible sheet in edge, Venturi tube 2 is whole moving, and the effective cross section is long-pending needn't the CONSIDERING EDGE effect.Because with respect to flat diaphragm; The ripple flexible sheet 10 of belt edge ripple; The stiffness coefficient of 11 pairs of axial centre displacements is much smaller; In measuring process; The displacement of Venturi tube 2 is extremely small again; Also to consider simultaneously when fluid flows through Venturi tube 2 and before and after it, will produce pressure reduction; Suitably select flexible sheet 10; 11 useful area; Fluid pressure difference is at two flexible sheets 10; The extra-push model that produces on 11; To offset two flexible sheets 10; 11 major part even whole bounces because of axially micro-displacement generation, so detected fluid is to the thrust of Venturi tube 2
FMain bounce balance by two semi-girders 7,8, two bounce thrusts that flexible sheet 10,11 is produced along the pipeline axial displacement
FInfluence can ignore.
Comprehensive above two formulas can get
Or
According to the above equation can be obtained measured volumetric flow rate
expression
In following formula, after the parameters of detected fluid and Venturi tube physical dimension have been confirmed,
Be constant, so the volumetric flow rate of detected fluid
With thrust
FSquare root be directly proportional.However, due
The composition of item
can not be obtained through theoretical derivation, it can only be through the flowmeter calibration test method to determine the
value.
Embodiment two
In the embodiment of Fig. 2, can find out that present embodiment is structurally identical substantially with the embodiment of Fig. 1, has only following 2 differences.At first; In Fig. 2; Replaced the ripple flexible sheet 10,11 of two belt edge ripples among Fig. 1 with two circular planar diaphragms 10,11, the inner edge of the anterior elastic membrane sheet 10 on plane and the inlet end of Venturi tube 2 are tightly connected, and its outer rim and front tube 1 are tightly connected; The inner edge of the Descemet sheet 11 on plane and the endpiece of Venturi tube 2 are tightly connected, and its outer rim and rear end pipe 3 are tightly connected; And on that relative one side of each end pipe and planar diaphragm 10,11, processed a pit corresponding with effective diaphragm area, so that Venturi tube 2 has the nargin of move left and right vertically.Its two, foil gauge 5 is sticked on the frontal plane diaphragm 10, cancelled detection semi-girder 7, balanced cantilever beam 8 and gear frame 9, simplified the structure of flowmeter.
In the present embodiment, the suffered thrust of Venturi tube 2
FComprise the thrust on the Venturi tube 2 that acts directly on because of fluid throttling generation
F 1With the thrust of indirectly-acting on Venturi tube 2 that on two planar diaphragms, 10,11 useful area, produces because of fluid pressure difference
F 2Because
F 1With
F 2Numerical value all big or small corresponding with measured flux, these two power sums simultaneously
FOnly by the bounce institute balance of two planar diaphragms 10,11, therefore the foil gauge that sticks on the frontal plane diaphragm 10 through measurement is exported the size that signal can obtain measured flux again.
Embodiment three
In the embodiment of Fig. 3, use two U type corrugated tubes 13,14, the front end of preceding corrugated tube 13 and front tube 1 are tightly connected, and the inlet end of its rear end and Venturi tube 2 is tightly connected; The endpiece of the front end of back corrugated tube 14 and Venturi tube 2 is tightly connected, and its rear end and rear end pipe 3 are tightly connected.The weight of Venturi tube 2 is supported by two elastic sheet metal suspender belts 12, and foil gauge 5 sticks on the sheet metal suspender belt 12.Sheet metal suspender belt 12 is processed by very thin elastic sheet metal, and its stiffness coefficient along pipeline axial is very little, and bounce that its distortion produces is also very little, thereby can think the thrust that Venturi tube 2 is suffered
FOnly by the bounce balance of two corrugated tubes.But the deflection deformation of sheet metal suspender belt 12 is consistent with the axial deformation of corrugated tube, and therefore, the output signal that sticks on the foil gauge 5 on the sheet metal suspender belt 12 through measurement can obtain the size of measured flux.
Embodiment four
In the embodiment of Fig. 4, use two one ends that the sealing U type corrugated tube 13,14 at the end is arranged, at the bottom of the sealing of each corrugated tube, process a corresponding big or small hole with Venturi tube 2 bores.The axial rigidity coefficient of the corrugated tube 13,14 at the band perforate sealing end is less than the corrugated tube among the embodiment three, thereby can be used for the more measurement of low discharge.The front end and the front tube 1 of preceding corrugated tube 13 are tightly connected, and the hole on its rear end sealing end and the inlet end of Venturi tube 2 are tightly connected; The hole at the front end sealing end of back corrugated tube 14 and the endpiece of Venturi tube 2 are tightly connected, and its rear end and rear end pipe 3 are tightly connected.The weight of Venturi tube 2 is supported by an elastic sheet metal suspender belt 12, and foil gauge 5 sticks on the sheet metal suspender belt 12.The reason same with embodiment three can be thought the thrust that Venturi tube 2 is suffered
FOnly by the bounce balance of two corrugated tubes 13,14; The deflection deformation of sheet metal suspender belt 12 is consistent with the axial deformation of corrugated tube 13,14; Therefore, the output signal that sticks on the foil gauge 5 on the sheet metal suspender belt 12 through measurement can obtain the size of measured flux.
More than flowmeter among four embodiment only be suitable for measuring cleaner liquid and gas, when measuring dirty fluid, can adopt the scheme of embodiment five or embodiment six.
Embodiment five
The embodiment of Fig. 5 structurally substantially with Fig. 1 in embodiment identical; But in order to prevent that dirt from gathering flexible sheet 10; 11 with end pipe 1; In the space between 3; Influence the normal operation of flowmeter; Two and end pipe 1 have been used; 3 and the resilient seal endless belt 15 of the non-metallic material cylindraceous of bore such as Venturi tube 2; One end of two resilient seal endless belt 15 is tightly connected with the inlet end or the endpiece of Venturi tube 2 respectively; The other end is tightly connected with front tube 1 or rear end pipe 3 respectively, two resilient seal endless belt 15 and two flexible sheets 10; Need be full of equilibrium liquid in the enclosure space that is called forward horizontal stand chamber 16 and back balance chamber 17 that forms respectively between 11.Consider that the amount of contraction of liquid under pressure is very little, the radial expansion amount of resilient seal endless belt 15 when detected fluid pressure changes is very little, and through equilibrium liquid this pressure is delivered to the flexible sheet 10,11 of metal material, by flexible sheet 10,11 pressure-bearings.Therefore during measurement, two resilient seal endless belt 15 equilibrium liquid wall pressure are identical with the detected fluid wall pressure, not influenced by radial force, and less demanding to itself physical strength can adopt the non-metallic elastic material manufacturing.Because two resilient seal endless belt 15 are to be processed by the very little non-metallic elastic material of stiffness coefficient, in measuring process, the axial displacement of Venturi tube 2 is extremely small again, so resilient seal endless belt 15 stretching to thrust along pipeline axial
FInfluence can ignore.Detected fluid is to the thrust of Venturi tube 2
FStill, stick on the size that the output signal that detects the foil gauge 5 on the semi-girder 7 can obtain measured flux through measurement mainly by the bounce balance of two semi-girders 7,8.
Embodiment two and embodiment four also can be used in the measurement occasion of the dirty fluid of stolen goods behind the resilient seal endless belt 15 that uses non-metallic material.
Embodiment six
The embodiment of Fig. 6 is structurally identical with embodiment three substantially; But in order to prevent that dirt from gathering corrugated tube 13; In 14 the U-shaped ripple ditch; Influence the normal operation of flowmeter; Two and end pipe 1 have been used; 3 and the resilient seal endless belt 15 of the non-metallic material cylindraceous of bore such as Venturi tube 2; The left end of two resilient seal endless belt 15 respectively with two corrugated tubes 13; 14 left part flat segments inner seal connects; The right-hand member of two resilient seal endless belt 15 respectively with two corrugated tubes 13; 14 right part flat segments inner seals connect, two resilient seal endless belt 15 and two corrugated tubes 13; Two seal cavity domestic demands that form respectively between 14 are full of equilibrium liquid.So two resilient seal endless belt 15 and two corrugated tubes 13,14 that connect have constituted two incorporate assemblies; It is more convenient that kit form can make the installation of flowmeter make, and the mode that is tightly connected of the going into of these two assemblies and Venturi tube 2, endpiece and front and back ends pipe 1,3 is identical with embodiment three.Consider that the amount of contraction of liquid under pressure is very little, the radial expansion amount of resilient seal endless belt 15 when detected fluid pressure changes is very little, and can this pressure be delivered to the corrugated tube 13,14 of metal material through equilibrium liquid, by corrugated tube 10,11 pressure-bearings.Therefore during measurement, two resilient seal endless belt 15 equilibrium liquid wall pressure are identical with the detected fluid wall pressure, not influenced by radial force, and less demanding to itself physical strength can adopt the non-metallic elastic material manufacturing.Because two resilient seal endless belt 15 are to be processed by the very little non-metallic elastic material of stiffness coefficient; In measuring process; The axial displacement of Venturi tube 2 is extremely small again, so resilient seal endless belt 15 changes thrust along the bounce that stretching of pipeline axial produced
FInfluence can ignore.Therefore, identical with embodiment three, can think the thrust that Venturi tube 2 is suffered
FOnly by the bounce balance of two corrugated tubes; The axial bounce of sheet metal suspender belt 12 can be ignored equally; But its deflection deformation is consistent with the axial deformation of corrugated tube, and therefore, the output signal that sticks on the foil gauge 5 on the sheet metal suspender belt 12 through measurement can obtain the size of measured flux.
Claims (1)
1. a middle part through hole dynamic throttling element connects the flowmeter of flexible sheet or corrugated tube; Belong to the throttle type flow instrumentation in the Automatic Measurement Technique field, it is characterized in that: each need connect a flexible sheet (10,11) or corrugated tube (13,14) dynamic throttling element of middle part through hole (2) two ends; When dynamic throttling element (2) connects garden annular resilient diaphragm (10,11); The inner edge of the flexible sheet (10) that dynamic throttling element (2) entrance side connects and dynamic throttling element (2) inlet end are tightly connected; Its outer rim and front tube (1) are tightly connected; The inner edge of the flexible sheet (11) that dynamic throttling element (2) outlet side connects and dynamic throttling element (2) endpiece are tightly connected, and its outer rim and rear end pipe (3) are tightly connected; When dynamic throttling element (2) connects corrugated tube (13,14); Right side one end of the corrugated tube (13) that dynamic throttling element (2) entrance side connects and dynamic throttling element (2) inlet end are tightly connected; Its left side one end and front tube (1) are tightly connected; Left side one end of the corrugated tube (14) that dynamic throttling element (2) outlet side connects and dynamic throttling element (2) endpiece are tightly connected; Its right side one end and rear end pipe (3) are tightly connected, and the weight of dynamic throttling element (2) is supported by elastic sheet metal suspender belt (12); Casing frame (4) is positioned between front tube (1) and the rear end pipe (3), and this three is rigidly connected to fix two distances between the end pipe; Above-mentioned being tightly connected forms a fluid from the inflow of front tube (1) inlet, then flows through dynamic throttling element (2) middle part through hole, then the leak free flow channel that flows out from rear end pipe (3) outlet; In the occasion of measuring dirty fluid; Except that said structure; Also use two and end pipe (1; 3) and the resilient seal endless belt (15) of the non-metallic material cylindraceous of dynamic throttling element bores such as (2); Stop up to prevent in greater than the accessibility zone of the fluid to be measured of this bore, to produce; One end of two resilient seal endless belt (15) is tightly connected with the inlet end or the endpiece of dynamic throttling element (2) respectively; The other end of two resilient seal endless belt (15) is tightly connected with front tube (1) or rear end pipe (3) respectively, form respectively between two resilient seal endless belt (15) and two flexible sheets or two corrugated tubes be called before; Back balance chamber (16; 17) need be full of equilibrium liquid in the enclosure space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110187493 CN102353406B (en) | 2011-07-06 | 2011-07-06 | Flowmeter with middle through-hole movable throttling element connected with elastic membranes or bellows |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110187493 CN102353406B (en) | 2011-07-06 | 2011-07-06 | Flowmeter with middle through-hole movable throttling element connected with elastic membranes or bellows |
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| CN102353406A true CN102353406A (en) | 2012-02-15 |
| CN102353406B CN102353406B (en) | 2013-01-23 |
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| CN 201110187493 Expired - Fee Related CN102353406B (en) | 2011-07-06 | 2011-07-06 | Flowmeter with middle through-hole movable throttling element connected with elastic membranes or bellows |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620775A (en) * | 2012-04-23 | 2012-08-01 | 王可崇 | Middle through hole movable throttling element flow meter capable of preventing blockage |
| CN104236644A (en) * | 2014-10-08 | 2014-12-24 | 王可崇 | Novel water meter with middle-through-hole movable throttling element |
| CN104236642A (en) * | 2014-10-08 | 2014-12-24 | 王可崇 | Novel flowmeter with middle-through-hole movable throttling element |
| CN104359514A (en) * | 2014-10-08 | 2015-02-18 | 王可崇 | Novel remote gas meter provided with middle through hole movable throttling element |
| CN107702754A (en) * | 2017-11-22 | 2018-02-16 | 安徽省锐凌计量器制造有限公司 | A kind of portable Simple flowmeter |
| CN108196597A (en) * | 2017-12-26 | 2018-06-22 | 深圳市宇恒互动科技开发有限公司 | Intelligent liquid flowing management method, system and detection device |
| CN114130737A (en) * | 2021-11-12 | 2022-03-04 | 安徽日竞控制技术有限公司 | Cleaning machine convenient to switch cleaner |
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| CN101660933A (en) * | 2009-09-08 | 2010-03-03 | 王可崇 | Movable throttling element flowmeter with through hole at middle part |
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| US5419203A (en) * | 1992-10-15 | 1995-05-30 | Spirax-Sarco Limited | Flow meter having a contoured plug and resilient means |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620775A (en) * | 2012-04-23 | 2012-08-01 | 王可崇 | Middle through hole movable throttling element flow meter capable of preventing blockage |
| CN104236642B (en) * | 2014-10-08 | 2018-12-07 | 王可崇 | Middle through-hole dynamic throttling element flowmeter |
| CN104236642A (en) * | 2014-10-08 | 2014-12-24 | 王可崇 | Novel flowmeter with middle-through-hole movable throttling element |
| CN104359514A (en) * | 2014-10-08 | 2015-02-18 | 王可崇 | Novel remote gas meter provided with middle through hole movable throttling element |
| CN104236644A (en) * | 2014-10-08 | 2014-12-24 | 王可崇 | Novel water meter with middle-through-hole movable throttling element |
| CN104236644B (en) * | 2014-10-08 | 2018-12-07 | 王可崇 | Middle through-hole dynamic throttling element water meter |
| CN104359514B (en) * | 2014-10-08 | 2018-12-28 | 王可崇 | Middle through-hole dynamic throttling element remote transmitting gas meter |
| CN107702754A (en) * | 2017-11-22 | 2018-02-16 | 安徽省锐凌计量器制造有限公司 | A kind of portable Simple flowmeter |
| CN107702754B (en) * | 2017-11-22 | 2023-12-22 | 安徽省锐凌计量器制造有限公司 | Portable simple flowmeter |
| CN108196597A (en) * | 2017-12-26 | 2018-06-22 | 深圳市宇恒互动科技开发有限公司 | Intelligent liquid flowing management method, system and detection device |
| CN108196597B (en) * | 2017-12-26 | 2020-12-29 | 深圳市宇恒互动科技开发有限公司 | Intelligent liquid flow management method, system and detection device |
| CN114130737A (en) * | 2021-11-12 | 2022-03-04 | 安徽日竞控制技术有限公司 | Cleaning machine convenient to switch cleaner |
| CN114130737B (en) * | 2021-11-12 | 2022-09-13 | 安徽日竞控制技术有限公司 | Cleaning machine convenient to switch cleaner |
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