CN201788000U - Flow measuring device and float thereof - Google Patents
Flow measuring device and float thereof Download PDFInfo
- Publication number
- CN201788000U CN201788000U CN2010202940131U CN201020294013U CN201788000U CN 201788000 U CN201788000 U CN 201788000U CN 2010202940131 U CN2010202940131 U CN 2010202940131U CN 201020294013 U CN201020294013 U CN 201020294013U CN 201788000 U CN201788000 U CN 201788000U
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- China
- Prior art keywords
- float
- tapered portion
- water tank
- cylindrical portion
- glass tube
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- Expired - Lifetime
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Abstract
The utility model provides a flow measuring device and a float thereof. A conical part is arranged at the lower end of the float, and the average density of the float is equal to the density of the liquid where the float is. The flow measurement device comprises an experimental water tank and a glass pipe arranged on one side of the experimental water tank and communicated with the experimental water tank, wherein a float and a sensing device positioned on one side of the glass pipe and used for sensing the position of the float are arranged in the glass pipe respectively, and the float adopts the float above. In the dropping process of the float, the air bubbles in the conical part are evacuated and prevented from being accumulated, and the height difference between the detected position of the float and the actual position of the water surface is eliminated, so that the precision of flow measurement is enhanced.
Description
Technical field
The utility model relates to the aeronautical product fields of measurement, more specifically, relates to a kind of flow measurement device and float thereof.
Background technology
Under the situation whether flow of checking certain bore can meet the demands, often utilize current to be medium, test.The principle of test is: measure the used time t of volume v that passes through through the known water of this bore, utilize flow formula q=v/t to obtain flow.
During flow measurement, be connected with water tank with glass tube usually, the water level in the glass tube is consistent with water level in the water tank, and float is arranged in the glass tube.When flow measurement begins, open valve, make that the water in the water tank flows out by bore to be measured, cistern water level descends, the also corresponding decline of the water level of glass tube, this moment float also with the decline of water level constant speed.Along with water level in the water tank continues to descend, float continues to descend with the decline rate that waits water level.By measuring the height and the elapsed time of float process,, finally calculate flow in conjunction with the area of section of water tank.Generally, survey water level by the position of using sensor to survey the float top.
When carrying out flow measurement, the float 10 that uses ' be cylindric, in the process of using, since the bubble that produces in the water float 10 ' the bottom surface pile up, for total system, though the influence value of single isolated bubbles almost can be ignored, if but bubble is piled up, cause the suffered buoyancy of float to become big, the float upper surface will emerge, and can directly cause measurement result inaccurate.As shown in Figure 2, in a certain stage of flow measurement, water level A ' dropped to sensor 40 ' detecting location the time, by the float 10 of sensor 40 ' detection ' the position B ' at top exceeded water level A ', and this section height that exceeds water level A ' is a unknown number.Along with the continuation of water level descends, treat float 10 ' end face through this sensor 40 ' the position time system log (SYSLOG) time will not be the time that actual water level descends, cause time value inaccurate, thereby influence the precision of flow measurement.
The utility model content
The utility model aims to provide a kind of flow measurement device and the float thereof that can accurately measure flow.
According to an aspect of the present utility model, a kind of float is provided, the lower end of float has tapered portion, and the average density of float equates with the residing density of liquid of float.
Further, float is airtight hollow structure.
Further, float has cylindrical portion, and the upper end of tapered portion is connected with the lower end of cylindrical portion.
Further, the lower end of the upper end of tapered portion and cylindrical portion is bonding mutually.
Further, the top of cylindrical portion is made by metal material.
Further, the top of cylindrical portion is made by stainless steel material.
Further, tapered portion is made by rigid plastic.
Further, tapered portion is made by teflon.
According to another aspect of the present utility model, a kind of flow measurement device is provided, comprise, the experiment water tank, be arranged on a side of experiment water tank and the glass tube that is connected with the experiment water tank, be provided with float in the glass tube, be positioned at the sensing device that is used for the sensing float position of glass tube one side, float is aforesaid float.
Further, sensing device comprises mounting bracket and a plurality of sensors that are connected with mounting bracket, and sensor is connected on the mounting bracket by the helical member of lateral arrangement, and arranges towards glass tube.
Adopt flow measurement device of the present utility model and float thereof, the lower end of float has tapered portion, and the average density of float equates with the residing density of liquid of float.In the float decline process, the tapered portion emptying bubble and prevent that bubble from piling up, eliminated the location to be detected of float and the difference in height between the water surface physical location, measurement result is controlled in the scope that error agrees.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to flow measurement device of the present utility model;
Fig. 2 is the structure and the position view of float of the flow measurement device of prior art;
Fig. 3 is according to the structure of float of the present utility model and position view;
Fig. 4 is the force analysis figure according to float of the present utility model;
Fig. 5 is the cross-sectional view according to float of the present utility model;
Fig. 6 is the system architecture synoptic diagram according to flow measurement device of the present utility model.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
As Fig. 3, Fig. 4 and shown in Figure 5, the lower end of float has tapered portion 11, and the average density of float equates with the residing density of liquid of float.
In the decline process of float, the bubble that produces in the water has buoyancy F2, acts on the reacting force F1 of the conical surface of tapered portion 11, and the F that makes a concerted effort of two power closes bubble is finally moved up with speed V along the direction of the conical surface.In use the height value of the conical surface is very little, and the time of walking the complete section conical surface at bubble is very short, almost can ignore the influence of whole measuring result error during this period of time.The effect of the conical surface is emptying and prevents to pile up, almost can ignore the influence value of total system single isolated bubbles.As long as the bubble that produces in water emptying rapidly, its measurement result will be in the scope that error allows.The average density of float equates that with the residing density of liquid of float then the liquid level of the upper surface liquid residing with it of float flushes, thereby prevents that float from having the height of one section the unknown to float on the liquid level, has improved the precision of measuring.In addition, when making float, require the smooth surface of float, thus suffered resistance when reducing float and descending.
The concrete structure of float as shown in Figure 5, float are airtight hollow structure.Because the average density of the float that the requirement when measuring is adopted equates with its residing density of liquid, and the liquid of general measure flow, mostly be water greatly, therefore, as if density that requires float and water etc., generally can take the made float approaching, and float is made hollow structure, to reduce the difficulty of selection with water-mass density.After the float manufacturing finishes, in order to ensure its leakproofness, before the formal use of float, detect, guarantee that it can not leak.
According to an embodiment of the present utility model, float has cylindrical portion 12, and the upper end of tapered portion 11 is connected with the lower end of cylindrical portion 12.Make the base diameter of tapered portion 11 consistent with the diameter of cylindrical portion 12, thereby make its both the comparatively level and smooth transition that is connected with, still there is the plane that bubble can adhere in the connecting portion that prevents the two and influences measuring accuracy.
Because float generally is used in combination with sensor, therefore, the upper end of float generally will be selected the material that can respond to transducing signal for use.The top 121 of cylindrical portion 12 is made by metal material.Preferably, the top 121 of cylindrical portion 12 is made by stainless steel material.Use stainless steel material to make the top of cylindrical portion 12, both can respond to transducing signal, can prevent corrosion again.For easily manufactured, also can be under the prerequisite that guarantees the float average density, the integral body of cylindrical portion 12 is all selected the stainless steel material manufacturing for use.
For the global density that guarantees float equates that with its density of liquid of living in the material of tapered portion 11 generally selects for use the very little material of density to make.According to an embodiment of the present utility model, tapered portion 11 is made by rigid plastic.Preferably, tapered portion 11 is made by teflon.Teflon is the material that a kind of density approaches water, when using this made tapered portion 11, need not in order to alleviate quality to limit significantly the wall thickness of tapered portion 11, therefore manufactures comparatively simple.And when the wall of tapered portion 11 is thicker, also processing easily.Certainly, the cylindrical portion 12 of float also can adopt the polytetrafluoroethylmaterial material manufacturing, but because the material of teflon is generally thicker, in order to ensure the average density of float, a part will be emptied in the inside of the cylindrical portion 12 that polytetrafluoroethylmaterial material is made, with weight reduction.
Preferably, the lower end of the upper end of tapered portion 11 and cylindrical portion 12 is bonding mutually.Because the material of tapered portion 11 may be different with cylindrical portion 12, therefore can adopt viscose that tapered portion 11 and cylindrical portion 12 are closely bonded, thereby guarantee that float integral body is closed structure.
Below in conjunction with accompanying drawing flow measurement device of the present utility model is described.
According to a kind of flow measurement device of the present utility model, comprise experiment water tank 20, be arranged on a side of experiment water tank 20 and the glass tube 30 that is connected with experiment water tank 20, be provided with float 10 in the glass tube 30, be positioned at the sensing device 40 that is used for sensing float 10 positions of glass tube 30 1 sides, float 10 is aforesaid float.
As Fig. 1 and shown in Figure 6, use flow measurement device of the present utility model, float 10 is arranged on and tests the glass tube 30 that water tank 20 is connected, experiment water tank 20 lower ends are connected with aqua storage tank 60, one side of glass tube 30 has sensing device 40, sensing device 40 can be responded to the position of float 10, measures flow by calculating float 10 through certain two used time of position.Total system also comprises propulsion system 50, as water pump, for the circular flow of system fluid provides energy.In addition, because float 10 is described in detail in the above-described embodiments, be not described in detail at this.
Preferably, as shown in Figure 3, sensing device 40 comprises mounting bracket 41 and a plurality of sensors 42 that are connected with mounting bracket 41, and sensor 42 is connected on the mounting bracket 41 by the helical member of lateral arrangement, and arranges towards glass tube 30.
As the sensor 42 of measuring the float position device, its detecting error and measuring distance are inversely proportional to, i.e. the position of the approaching more sensed float 10 of sensor 42, and its detecting error is more little.Therefore, in order to reduce detecting error to greatest extent, sensor 42 should be to greatest extent near sensed float 10.Sensor 42 and mounting bracket 41 are connected together by helical member, after preliminary sensor installation 42 finishes, can finely tune the position of sensor 42, all try one's best near float 10 in the position of each sensor 42, also promptly enough near from glass tube 30, to guarantee the measuring accuracy of system.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
A kind of float of the present utility model, the lower end of float has tapered portion, and the average density of float equates with the residing density of liquid of float.The existence of tapered portion makes float in the decline process, in its tapered portion the bubble emptying also can be prevented the bubble accumulation, has eliminated the location to be detected of float and the difference in height between the water surface physical location, thereby has improved measuring accuracy.
The above is a preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. float, it is characterized in that: the lower end of described float has tapered portion (11), and the average density of described float equates with the residing density of liquid of float.
2. float according to claim 1 is characterized in that, described float is airtight hollow structure.
3. float according to claim 1 is characterized in that, described float has cylindrical portion (12), and the upper end of described tapered portion (11) is connected with the lower end of described cylindrical portion (12).
4. float according to claim 3 is characterized in that, the lower end of the upper end of described tapered portion (11) and described cylindrical portion (12) is bonding mutually.
5. float according to claim 3 is characterized in that, the top (121) of described cylindrical portion (12) is made by metal material.
6. float according to claim 5 is characterized in that, the top (121) of described cylindrical portion (12) is made by stainless steel material.
7. float according to claim 1 is characterized in that, described tapered portion (11) is made by rigid plastic.
8. float according to claim 7 is characterized in that, described tapered portion (11) is made by teflon.
9. flow measurement device, comprise, experiment water tank (20), be arranged on a side of described experiment water tank (20) and the glass tube (30) that is connected with described experiment water tank (20), be provided with float (10) in the described glass tube (30), be positioned at the sensing device (40) that is used for the described float of sensing (10) position of described glass tube (30) one sides, it is characterized in that described float (10) is each described float in the claim 1 to 8.
10. flow measurement device according to claim 9, it is characterized in that, described sensing device (40) comprises mounting bracket (41) and a plurality of sensors (42) that are connected with described mounting bracket (41), described sensor (42) is connected on the described mounting bracket (41) by the helical member of lateral arrangement, and arranges towards described glass tube (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202940131U CN201788000U (en) | 2010-08-17 | 2010-08-17 | Flow measuring device and float thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202940131U CN201788000U (en) | 2010-08-17 | 2010-08-17 | Flow measuring device and float thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201788000U true CN201788000U (en) | 2011-04-06 |
Family
ID=43819959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202940131U Expired - Lifetime CN201788000U (en) | 2010-08-17 | 2010-08-17 | Flow measuring device and float thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201788000U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769602A (en) * | 2016-12-26 | 2017-05-31 | 深圳大学 | Automatic testing equipment and method that a kind of Corrosion Reinforcement section is axially distributed |
| CN107238421A (en) * | 2017-08-02 | 2017-10-10 | 任松 | A kind of buoy for monitoring battery mould casting concrete progress |
| CN109724678A (en) * | 2019-03-05 | 2019-05-07 | 华北电力科学研究院有限责任公司 | Consider the absorbing tower liquid-level height measuring device and method of slurries foam falseness liquid level |
-
2010
- 2010-08-17 CN CN2010202940131U patent/CN201788000U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769602A (en) * | 2016-12-26 | 2017-05-31 | 深圳大学 | Automatic testing equipment and method that a kind of Corrosion Reinforcement section is axially distributed |
| CN106769602B (en) * | 2016-12-26 | 2023-12-26 | 深圳大学 | Automatic testing device and method for axial distribution of section of rusted steel bar |
| CN107238421A (en) * | 2017-08-02 | 2017-10-10 | 任松 | A kind of buoy for monitoring battery mould casting concrete progress |
| CN109724678A (en) * | 2019-03-05 | 2019-05-07 | 华北电力科学研究院有限责任公司 | Consider the absorbing tower liquid-level height measuring device and method of slurries foam falseness liquid level |
| CN109724678B (en) * | 2019-03-05 | 2024-03-22 | 华北电力科学研究院有限责任公司 | Absorption tower liquid level height measuring device and method considering false liquid level of slurry foam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110406 |