CN207232192U - A kind of flow rate measuring device based on pressure sensitive - Google Patents
A kind of flow rate measuring device based on pressure sensitive Download PDFInfo
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- CN207232192U CN207232192U CN201720948378.3U CN201720948378U CN207232192U CN 207232192 U CN207232192 U CN 207232192U CN 201720948378 U CN201720948378 U CN 201720948378U CN 207232192 U CN207232192 U CN 207232192U
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- measuring cylinder
- flow rate
- measuring device
- pressure sensitive
- piston
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Abstract
The utility model discloses a kind of flow rate measuring device based on pressure sensitive, the first piston (1) that can be moved left and right and second piston (2) are being separately installed with the internal both ends of hollow measuring cylinder (3), closed structure is formed between the first piston (1) and second piston (2) and the measuring cylinder (3)；The inside middle of the measuring cylinder (3) is provided with partition plate (4), graduated U-tube (5) is provided with the upper end of the measuring cylinder (3), there is one section of fluid column (6) in the inside middle of the U-tube (5)；Handle (7) is installed in the U-tube (5), the handle (7) is located at the surface of the measuring cylinder (3)；It overcome can not accomplish in the prior art gamut it is general the shortcomings that, have that principle of device is simple, practical operation is easy, quick, directly perceived, of low cost and the advantages of without driven by power.
Description
Technical field
The technical field of measurement flow rate of water flow is the utility model is related to, is more specifically that one kind is based on pressure sensitive
Flow rate measuring device.
Background technology
In geology it is known that water velocity represents the size of water energy, it is sedimentary sand bodies type and shape
One of governing factor of state, so measurement flow rate of water flow has when influence the research of sedimentary simulating experiment result factor
Important reference value.
The methods and techniques of measurement flow rate of water flow are quite ripe at present, to sum up including following several：(1) float
Hydrometry is marked, basic principle is exactly the time for the distance divided by experience drifted about using buoy to obtain speed.This method requirement is relatively low,
It is easy to operation and be widely used, but there is use manual ranging and, measurement accuracy larger by weather, air speed influence
The problem of low.(2) propeller type tachymeter, rotation during using water impact propeller, establishes the pass between rotating speed and flow velocity
System.Its main feature is that high certainty of measurement, range is broad, but propeller is be easy to cause when floater is more and meets card, and
Original water flow field can be caused to disturb and destroyed during propeller rotational, reduce measurement accuracy.(3) ultrasonic wave velocimetry,
Instrument Doppler anemometer is represented, is to measure flow velocity using ultrasonic wave propagation characteristic in water.This method is simple, workload
It is small, can measure instantaneous velocity and change in flow process and in digital form or graph form show result.Shortcoming：Ultrasound
Ripple is easily influenced in quiet water-borne speed in river water be subject to water temperature, hydraulic pressure, impurities in water, and to the selection of discharge site
It is more demanding, it is generally used for seawater underflow measure.(4) electromagnetic method velocity measurement, corresponding instrument are electromagnetism Flow speed measurer, profit
The induced electromotive force and the speed of flowing water that are produced with hydro jet magnetic field are proportional to be measured, during such a method measurement
There is heavy workload, the problem of technical sophistication, instrument involves great expense, it is difficult to extensive utilization.
In conclusion although speed instrument is more and technology maturation, each there is also that can not overcome the problem of, can not do
To the general of gamut, it is necessary to which particular problem is made a concrete analysis of.In flume experiment, we will not only consider cost, also seek
One kind is simple, convenient, intuitively speed measuring device.
The content of the invention
The purpose of the utility model is to overcome the shortcoming of above-mentioned background technology, and propose one kind and be based on pressure sensitive
Flow rate measuring device.
The technical solution of the utility model is implemented by following measure：A kind of flow velocity measurement based on pressure sensitive
Device, both ends are separately installed with the first piston that can be moved left and right and second piston inside in hollow measuring cylinder, described
Closed structure is formed between first piston and second piston and the measuring cylinder；Set in the inside middle of the measuring cylinder
Partition plate is equipped with, graduated U-tube is provided with the upper end of the measuring cylinder, in the inside middle of the U-tube
There is one section of fluid column；Handle is installed in the U-tube, the handle is located at the surface of the measuring cylinder.
In the above-mentioned technical solutions：Measuring device includes rotating vane, bar and azimuth compass with pointer；Bar with pointer
Run through the partition plate and measuring cylinder from bottom to top, rotating vane is installed in the afterbody of the bar with pointer, described
The top of the bar with pointer and the upper end of the measurement pipe wall between azimuth compass is installed.
In the above-mentioned technical solutions：Middle installation level meter on the outside of the measurement pipe wall；In the survey
The tube wall both sides of graduated cylinder are provided with the first latch closure and the second latch closure.
In the above-mentioned technical solutions：Bottom bracket is installed at the both ends of the measuring cylinder；The bottom bracket bag
Include the iron hoop and two telescopic rods of semicircular in shape；The telescopic rod is located at the both ends of the iron hoop；The iron hoop blocks
It is socketed positioned at the measuring cylinder described in upper end and with the first latch closure of both sides and the second latch closure.
In the above-mentioned technical solutions：The both ends of the U-tube are mutually communicated with the measuring cylinder respectively.
In the above-mentioned technical solutions：A diameter of 5-10 centimetres of the measuring cylinder, and with the same footpath of iron hoop.
In the above-mentioned technical solutions：The fluid column is formed using eye-catching pigment perfusion；The height of the bottom bracket
Spend for 3-5 centimetres.
The utility model includes following advantage：1st, the kinetic energy produced using the fluid flowing with speed V removes impact piston
Compressed gas, realizes the inside transformation of energy of kinetic energy, gas produces pressure differential in the case of by compression, so that in U-tube
Fluid column does work, and fluid column is produced displacement L, by establishing measurement of the relational implementation between V and L to flow velocity.This is a kind of brand-new
Theoretical method innovation.2nd, device can not only measure the size of water velocity, and can measure the direction of current, realize survey
The vector quantization of speed.3rd, the utility model device be for underwater different depth measurement flow velocity, and and need not be too deep water
It is deep, it is wider than turbine meter suitable for less velocity field, applicable elements.4th, principle of device is simple, practical operation letter
Just, quickly, intuitively, it is of low cost and without driven by power, the requirement of sink sedimentary simulating experiment is met, while do not departing from
In the case of the spirit and scope of this utility model, the personnel of association area can still push away according to the content that the utility model is announced
Export meets many other variations or modifications of the utility model principle.
Brief description of the drawings
Fig. 1 is the utility model measuring principle schematic diagram.
Fig. 2 is measuring device overall structure diagram.
Fig. 3 is the measuring device main part structure diagram in the utility model.
Fig. 4 is bottom bracket structure diagram.
Fig. 5 is water (flow) direction measuring device schematic diagram.
In figure：First piston 1, second piston 2, measuring cylinder 3, partition plate 4, U-tube 5, fluid column 6, handle 7, the first latch closure 8,
Second latch closure 8.1, level meter 9, bottom bracket 10, iron hoop 11, telescopic rod 12, measuring device 14, rotating vane 14.1, band pointer
Bar 14.2, azimuth compass 14.3.
Embodiment
The specific implementation situation of the utility model is described in detail below in conjunction with attached drawing, to make those skilled in the art
The principle and advantage of the utility model is more aware and understood, but they do not form the restriction to the utility model, only make
Citing.
On the one hand in order to describe the Method And Principle of this flow rate measuring device based on pressure sensitive in detail, combination principle shows
It is intended to 1 to be illustrated.As shown in Figure 1：Cylindrical cavity measuring cylinder 3 is separated by partition plate 4, and both ends are can be free to slide
One piston 1 and second piston 2, there is a U-tube 5 above measuring cylinder, and there is one section of fluid column 6 in the middle of pipe, its length can
To ignore.The cavity on measuring cylinder both sides is filled with closed air (can also be other gases), and U-tube is to connect with cavity
Logical.Under static state, since the pressure suffered by the piston 1,2 at measuring cylinder both ends is equal, fluid column 6 is placed in the middle.
When one end where fluid impact piston 1, piston 2 does not have fluid impact at one end, can regard as static
's.Fluid has speed V, and the flat of gas between the gas of left side cavity, this when or so cavity can be compressed in impact piston 1
Weighing apparatus state, which is broken, produces a pressure differential, this pressure differential can promote fluid column 6 to move right a distance L, after balancing again
It can settle out.Thus we know that, the speed v of fluid is positively related with the displacement distance L of fluid column.As long as obtain V and L
Between relational expression, then measure one L, it is possible to learn this apart from corresponding velocity magnitude.It is it should be noted that difficult at present
This calculation formula is gone out with direct derivation, because being on the one hand difficult to keep all the time during compressed gas in equilibrium state,
During another aspect gas push fluid column moves, pressure differential is nonlinear change.Have one the fact is that, can by
The data of multigroup V and L are measured in the sink of given known flow rate, the relation between the two is then drawn by linear regression method
Formula, so as to be demarcated to device.Obviously, this theory is practicable (arrow expression water (flow) direction and flow velocity signal in figure
Figure, wherein L represent the distance that fluid column 6 is advanced).
With reference to shown in Fig. 1-5：A kind of flow rate measuring device based on pressure sensitive, in the hollow inside of measuring cylinder 3 two
End is separately installed with the first piston 1 that can be moved left and right and second piston 2, the first piston 1 and second piston 2 and institute
Closed structure is formed between the measuring cylinder 3 stated；The inside middle of the measuring cylinder 3 is provided with partition plate 4, in the survey
The upper end of graduated cylinder 3 is provided with graduated U-tube 5, has one section of fluid column 6 in the inside middle of the U-tube 5；Institute
Handle 7 is installed, the handle 7 is located at the surface of the measuring cylinder 3 in the U-tube 5 stated.
Measuring device 14 includes rotating vane 14.1, bar 14.2 and azimuth compass 14.3 with pointer；
Bar 14.2 with pointer runs through the partition plate 4 and measuring cylinder 3 from bottom to top, in the bar 14.2 with pointer
Afterbody rotating vane 14.1 is installed, in the upper of the top of the bar 14.2 with pointer and 3 tube wall of measuring cylinder
Azimuth compass 14.3 is installed between end.
Level meter 9 is installed in the middle of 3 tube wall of measuring cylinder；
First latch closure 8 and the second latch closure 8.1 are installed in the tube wall both sides of the measuring cylinder 3.
Bottom bracket 10 is installed at the both ends of the measuring cylinder 3；The bottom bracket 10 includes semicircular in shape
Iron hoop 11 and two telescopic rods 12；The telescopic rod 12 is located at the both ends of the iron hoop 11；The iron hoop, which blocks, to be located at
Measuring cylinder 3 described in upper end is simultaneously socketed with the first latch closure of both sides 8 and the second latch closure 8.1.
The both ends of the U-tube 5 are mutually communicated with the measuring cylinder 3 respectively.
A diameter of 5-10 centimetres of the measuring cylinder 3, and the iron hoop 11 slightly compares with the diameter of footpath or iron hoop 11
The diameter of measuring cylinder 3 more greatly, as long as measuring cylinder 3 can be blocked.
The fluid column 6 is formed using eye-catching pigment perfusion, and the height of the bottom bracket 10 is 3-5 centimetres.
The utility model further includes a kind of implementation of the flow rate measuring device based on pressure sensitive, it includes following step
Suddenly；
1., partition plate 4 is installed in the internal middle in hollow measuring cylinder 3, the partition plate 4 is by the measuring cylinder
3 are divided into two, and first piston 1 and second piston 2 are provided with the measuring cylinder 3 of left and right ends；In the measurement
The top of cylinder 3 is provided with U-tube 5, and the left and right ends of the U-tube 5 are mutually communicated with the measuring cylinder 3 respectively, in institute
The middle of the barrel for the measuring cylinder 3 stated is provided with level meter 9, and the first latch closure 8 is provided with the both ends of the measuring cylinder 3
With the second latch closure 8.1；
2., the bar 14.2 with pointer in measuring device 14 passed through into measuring cylinder 3 and partition plate 4 from bottom to top, and make described
Measuring device 14 in rotating vane 14.1 be located at the measuring cylinder 3 lower section and make the side in the measuring device 14
Position compass 14.3 is located above the barrel of the measuring cylinder 3；
3., the iron hoop 11 of semicircular in shape in the bottom bracket 10 blocked into a measuring cylinder 3, and make the iron hoop 11
Both ends be socketed respectively with the first latch closure 8 and the second latch closure 8.1；
4., by handle 7 device handling is immersed in water, according to the flow direction of water, observed bearing compass 14.3 and U respectively
The scale value of fluid column 6 in type pipe 5, just obtains the flow direction and flow velocity of surveyed current.
The length of telescopic rod 12 is adjusted according to site contour, level meter 9 can be made to remain horizontal, while proofread fluid column 6
Position be located at the middle of the U-tube 5；The fluid column 6 is formed using colored pigment perfusion.
The material that the U-tube 5 uses is enough the handling of support device and non-breakable.
Above-mentioned unspecified part is the prior art.
Claims (7)
- A kind of 1. flow rate measuring device based on pressure sensitive, it is characterised in that：In the internal both ends point of hollow measuring cylinder (3) The first piston (1) that can be moved left and right and second piston (2) be not installed, the first piston (1) and second piston (2) with Closed structure is formed between the measuring cylinder (3)；The inside middle of the measuring cylinder (3) is provided with partition plate (4), The upper end of the measuring cylinder (3) is provided with graduated U-tube (5), has in the inside middle of the U-tube (5) One section of fluid column (6)；Handle (7) is installed in the U-tube (5), the handle (7) is located at the measuring cylinder (3) Surface.
- A kind of 2. flow rate measuring device based on pressure sensitive according to claim 1, it is characterised in that：Measuring device (14) rotating vane (14.1), bar (14.2) and azimuth compass (14.3) with pointer are included；Bar (14.2) with pointer is under And above run through the partition plate (4) and measuring cylinder (3), rotating vane is installed in the afterbody of the bar (14.2) with pointer (14.1), the side of being provided between the top of the bar (14.2) with pointer and the upper end of the measuring cylinder (3) tube wall Position compass (14.3).
- A kind of 3. flow rate measuring device based on pressure sensitive according to claim 1 or 2, it is characterised in that：Described Measuring cylinder (3) tube wall on the outside of middle installation level meter (9)；Is provided with the tube wall both sides of the measuring cylinder (3) One latch closure (8) and the second latch closure (8.1).
- A kind of 4. flow rate measuring device based on pressure sensitive according to claim 3, it is characterised in that：In the survey The both ends of graduated cylinder (3) are provided with bottom bracket (10)；The bottom bracket (10) includes the iron hoop (11) and two of semicircular in shape A telescopic rod (12)；The telescopic rod (12) is located at the both ends of the iron hoop (11)；The iron hoop is blocked positioned at upper end The measuring cylinder (3) is simultaneously socketed with the first latch closure of both sides (8) and the second latch closure (8.1).
- A kind of 5. flow rate measuring device based on pressure sensitive according to claim 4, it is characterised in that：Described is U-shaped The both ends of pipe (5) are mutually communicated with the measuring cylinder (3) respectively.
- A kind of 6. flow rate measuring device based on pressure sensitive according to claim 5, it is characterised in that：The measurement Cylinder a diameter of 5-10 centimetres of (3), and with described iron hoop (11) the same to footpath.
- A kind of 7. flow rate measuring device based on pressure sensitive according to claim 4, it is characterised in that：The fluid column (6) formed using eye-catching pigment perfusion；The height of the bottom bracket (10) is 3-5 centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720948378.3U CN207232192U (en) | 2017-07-31 | 2017-07-31 | A kind of flow rate measuring device based on pressure sensitive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720948378.3U CN207232192U (en) | 2017-07-31 | 2017-07-31 | A kind of flow rate measuring device based on pressure sensitive |
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| Publication Number | Publication Date |
|---|---|
| CN207232192U true CN207232192U (en) | 2018-04-13 |
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ID=61855308
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720948378.3U Expired - Fee Related CN207232192U (en) | 2017-07-31 | 2017-07-31 | A kind of flow rate measuring device based on pressure sensitive |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247156A (en) * | 2017-07-31 | 2017-10-13 | 长江大学 | A kind of flow rate measuring device and implementation based on pressure sensitive |
| CN108593957A (en) * | 2018-05-11 | 2018-09-28 | 天津大学 | A kind of feedwater piping flow rate measuring device |
| CN109141694A (en) * | 2018-07-20 | 2019-01-04 | 渝新智能科技（上海）有限公司 | A kind of signal source device, detection system and supporting body |
-
2017
- 2017-07-31 CN CN201720948378.3U patent/CN207232192U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107247156A (en) * | 2017-07-31 | 2017-10-13 | 长江大学 | A kind of flow rate measuring device and implementation based on pressure sensitive |
| CN107247156B (en) * | 2017-07-31 | 2023-09-12 | 长江大学 | Implementation method for flow velocity measurement based on pressure sensing |
| CN108593957A (en) * | 2018-05-11 | 2018-09-28 | 天津大学 | A kind of feedwater piping flow rate measuring device |
| CN109141694A (en) * | 2018-07-20 | 2019-01-04 | 渝新智能科技（上海）有限公司 | A kind of signal source device, detection system and supporting body |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180413 Termination date: 20210731 |
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| CF01 | Termination of patent right due to non-payment of annual fee |