CN204389145U - To paddle Flow around Building resistance measurement device - Google Patents
To paddle Flow around Building resistance measurement device Download PDFInfo
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- CN204389145U CN204389145U CN201520095674.4U CN201520095674U CN204389145U CN 204389145 U CN204389145 U CN 204389145U CN 201520095674 U CN201520095674 U CN 201520095674U CN 204389145 U CN204389145 U CN 204389145U
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- paddling
- plastic pipe
- pipe bar
- digital display
- lightweight aluminium
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Abstract
The utility model relates to one and to paddle Flow around Building resistance measurement device, with two hydrogen balloons, the building model level of paddling in current is floated, pull the thin wire be connected with digital display tautness meter simultaneously, the value of thrust be subject to is input to computer recorder by digital display tautness meter, and what be building model of paddling streams resistance.The utility model structure is simple, less demanding to experimental situation, can to paddle Flow around Building resistance by authentic testing, the buildings of paddling not only be built in river for basis is feasible, the test of streaming resistance for the buildings of paddling of paddle buildings or the some other complex situations that suspend in water is also very reliable, applied widely.
Description
Technical field
The utility model belongs to hydraulic engineering field, relates to one and to paddle Flow around Building resistance measurement device.
Background technology
Hydraulic engineering is related to national economy, is related to the economic construction of National agricultural and numerous industry, is very important capital construction, engineering construction, therefore should pay much attention to.Party and government of China very pay close attention to the construction of hydraulic engineering.And in hydraulic engineering, particularly large hydraulic engineering process of construction, have a large amount of problem to need research, and three kinds of common method of research are: theoretical research, physical test and numerical evaluation.Theoretical research and physical test and numerical evaluation, Flow around Building problem of paddling must be related in these three kinds of methods, in order to Flow around Building problem of accurately and paddling in comparatively accurate research and analysis hydraulic engineering, just must stream resistance (its reacting force and water flow impact pressure) accurate Calculation greatly possibly to buildings of paddling, for accurately calculating or determining Flow around Building resistance of paddling, further to apply to during theoretical research in hydraulic engineering or physical simulation experiment research or numerical simulation calculation analyze.External and domestic certain methods is installed on by building model of paddling on a flat bogie being placed at the bottom of experimental tank, certainly can accomplish that digging a pond at bottom of gullet makes the installation of this flat bogie flat board just flush with the bottom surface of tank.The test of streaming resistance that this method is built in the buildings of paddling in river for basis is feasible, but just unreliable for the test of streaming resistance of the buildings of paddling of paddle buildings or the some other complex situations that suspend in water.Therefore be necessary to design invent can be comparatively efficient, convenient and practical Flow around Building resistance measurement device of paddling.
Summary of the invention
The purpose of this utility model is to provide one and paddles Flow around Building resistance measurement device, solve the buildings of paddling that current proving installation is built in river for basis feasible, and for the test of streaming resistance just insecure problem of the buildings of paddling of paddle buildings or the some other complex situations that suspend in water.
The utility model is achieved through the following technical solutions: one is paddled Flow around Building resistance measurement device, comprise tank, stilling basin, lightweight aluminium-plastic pipe bar, hydrogen balloon, organic glass flat board, building model of paddling, digital display tautness meter and computer recorder, wherein, bottom of gullet is smooth flat, stilling basin is two, be positioned over tank both sides respectively, lightweight aluminium-plastic pipe bar is placed horizontally on tank, lightweight aluminium-plastic pipe bar two ends are connected to hydrogen balloon, and hydrogen balloon floats in stilling basin respectively; Lightweight aluminium-plastic pipe bar central lower is bolted organic glass flat board, and organic glass flat plate bottom is bolted building model of paddling again; Digital display tautness meter is placed horizontally on tank, be positioned at the upstream of building model of paddling and be in same level with lightweight aluminium-plastic pipe bar, lightweight aluminium-plastic pipe bar central authorities are connected by the central square beam of thin wire and digital display tautness meter, and digital display tautness meter connects computer recorder by data line again.
Further, described lightweight aluminium-plastic pipe bar overcentre is also equipped with little level tube device.
Adopt the good effect of technique scheme: the utility model structure is simple, less demanding to experimental situation, can to paddle Flow around Building resistance by authentic testing, the buildings of paddling not only be built in river for basis is feasible, the test of streaming resistance for the buildings of paddling of paddle buildings or the some other complex situations that suspend in water is also very reliable, applied widely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1 tank, 2 stilling basins, 3 lightweight aluminium-plastic pipe bars, 4 hydrogen balloons, 5 organic glass are dull and stereotyped, and 6 paddle building model, 7 digital display tautness meters, 8 computer recorders, 9 little level tube devices.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described further, but should not be construed as restriction of the present utility model:
embodiment 1
Fig. 1 is structural representation of the present utility model, as shown in the figure, one is paddled Flow around Building resistance measurement device, comprise tank 1, stilling basin 2, lightweight aluminium-plastic pipe bar 3, hydrogen balloon 4, organic glass flat board 5, building model 6 of paddling, digital display tautness meter 7 and computer recorder 8, wherein, be smooth flat bottom tank 1, resistance to water-flow is negligible, and the depth of water sets according to a certain percentage according to the hydraulic engineering actual conditions that will study.Stilling basin 2 is two, be positioned over tank 1 both sides respectively, lightweight aluminium-plastic pipe bar 3 is placed horizontally on tank 1, lightweight aluminium-plastic pipe bar 3 two ends are connected to hydrogen balloon 4, hydrogen balloon 4 floats in stilling basin 2 respectively, lightweight aluminium-plastic pipe bar requires to be out of shape, but quality is light, intensity is large, aeration quantity in hydrogen balloon can lash hydrogen as required, allows building model not institute's allocation in water of paddling thoroughly to float the whole building model and poly (methyl methacrylate) plate and lightweight aluminium-plastic pipe bar of paddling to reach.Lightweight aluminium-plastic pipe bar 3 central lower is bolted organic glass flat board 5, building model 6 of paddling is bolted again bottom organic glass flat board 5, this kind of design can be adjusted up and down, be convenient to be elevated to the position of required location, paddle building model in water many deeply, in what position specifically can fix according to the reality of hydraulic engineering.Digital display tautness meter 7 is placed horizontally on tank 1, be positioned at the upstream of building model 6 of paddling and be in same level with lightweight aluminium-plastic pipe bar 3, lightweight aluminium-plastic pipe bar 3 central authorities are connected with the central square beam of digital display tautness meter 7 by thin wire, and digital display tautness meter 7 connects computer recorder 8 by data line again.Horizontality can be in, so thus make the data shown by digital display tautness meter be inerrably Flow around Building resistance of paddling really when iron wire between lightweight aluminium-plastic pipe bar and digital display tautness meter is stretching.Digital display tautness meter must according to hydraulic engineering actual conditions and the paddle actual conditions of buildings and the actual conditions of current conditions and select accurately responsive and have the digital display tautness meter of corresponding measurement range.Data line and the computer recorder of this digital display tautness meter link together, and computer recorder records in time and carries out measurement data statistical treatment.
Whether, in order to allow lightweight aluminium-plastic pipe bar moment maintenance level, described lightweight aluminium-plastic pipe bar 3 overcentre is also equipped with little level tube device 9, can be placed in the middle by the bubble of this little level tube device, controls this lightweight aluminium-plastic pipe bar whether level.
embodiment 2
Use is paddled the method for testing of Flow around Building resistance measurement device, and the method comprises the following steps:
(1) pass through smooth water flow in tank 1, building model 6 of paddling is positioned at the downstream of flow direction; Water flow requirements in tank makes the water flow energy in tank accomplish to circulate constantly by ebullator, and uniform fluid flow is steady, and stable level, the rotating speed of water circulating pump can control the mean flow rate of current.The control of water level can be controlled by water-level gauge, and bath of glass trough rim wall (transparent) can install water-level gauge, also can be monitored at any time by digital display water level meter simultaneously.Although but to be controlled by water level (discharge water and reach) and the control of water circulating pump rotating speed controls water level in tank and flow rate of water flow to meet hydraulic engineering and study and the test needs of Flow around Building resistance of paddling.But certain turbulent fluctuation inevitably appears in current, thus require in the processing procedure of the data measured of Flow around Building resistance measurement value of paddling, maximal value be asked for and disregard any little value or smaller value.Getting maximal value as the actual value of measured Flow around Building resistance of paddling is data processing skill.
(2) water is filled in stilling basin 2, and two stilling basin 2 middle water levels are identical, two hydrogen balloons 4 swim in two stilling basins 2, the hydrogen of different amount can be filled with according to the needs of research, close to tangent with stilling basin 2 water surface bottom hydrogen balloon 4, thus greatly reduce resistance, the building model that so just can make to paddle stream measure of resistance obtain very true and without or minimumly to lose.
(3) lightweight aluminium-plastic pipe bar 3 is by the buoyancy of two ends hydrogen balloon 4, steadily and symmetrically organic glass dull and stereotyped 5 and building model 6 of paddling are floated in tank 1, use the level condition of little level tube device (9) to lightweight aluminium-plastic pipe bar (3) to calibrate in this process, the horizontality of lightweight aluminium-plastic pipe bar must be kept.
(4), after building model 6 of paddling is subject to water flow impact pressure, pulls the thin wire be connected with digital display tautness meter 7, when thin wire is stretching, can horizontality be in.So thus make the data shown by digital display tautness meter be inerrably Flow around Building resistance of paddling really.The value of thrust be subject to is input to computer recorder 8 by digital display tautness meter 7, and what be building model 6 of paddling streams resistance.
Compared with additive method, this method has following advantage:
(1) actuality: external air blowing by bottom of gullet and top are floated the building model that makes to paddle suspend in water without any, and this method is not almost accomplished for general R&D institution, and the general R&D institution of this device can accomplish.
(2) advanced: the advance of these apparatus and method is digitizing and complete monitoring.
(3) accuracy: these apparatus and method because the hydrogen balloon of balance buoyancy aid can by be filled with according to actual conditions quantity hydrogen and make do building model of paddling fully to be immersed in water not with contact at the bottom of tank but can accomplish with the distance at the bottom of tank very small, certainly can according to hydraulic engineering reality by position not certain in water for building model of paddling.Can accomplish tangent with the water surface in the stilling chamber of its immersion for two balance buoyancy aid hydrogen balloons simultaneously, so accomplish that authentic testing is paddled Flow around Building resistance and to turn eliminate the data that frictional resistance makes to record be Flow around Building resistance of paddling really.
(4) stability: because the balance buoyancy aid hydrogen balloon of two in this device is comparatively large, thus can accomplish whole dynameter is in uniform flow very reposefully, the whole test process of Flow around Building resistance is comparatively steadily stablized thus test is paddled.
(5) applicability, practicality are wide: external and domestic certain methods is installed on by building model of paddling on a flat bogie being placed at the bottom of experimental tank, certainly can accomplish that digging a pond at bottom of gullet makes the installation of this flat bogie flat board just flush with the bottom surface of tank.The test of streaming resistance that this method is built in the buildings of paddling in river for basis is feasible.But it is just unreliable for the test of streaming resistance of the buildings of paddling of paddle buildings or the some other complex situations that suspend in water.And this method can regulate because of the position of building model of paddling, thus the test of Flow around Building resistance of paddling in any case, under any operating mode, any hydraulic engineering actual conditions is all reliably feasible, applied widely.
(6) economy: expense needed for this device is not very high, tank is disposable to be built up, and can recycle numerous times, even put things right once and for all, to paddle the making of building model, can be changed by engineering practice and change, building model of paddling can be made with organic glass, and required expense is not high.Model installing plate also makes of poly (methyl methacrylate) plate, lightweight aluminium-plastic pipe bar (caliber little, expense is not high), and digital display tautness meter can commercially have been bought, expense can according to oneself need buy, neither be very high.Computer data process can write handling procedure according to actual conditions oneself completely.The expense of equipment set can not be very high, and some equipment oneself can make according to actual conditions oneself and process.Therefore, be applicable to very much some small-size laboratories and be equipped with use.
Claims (2)
1. a Flow around Building resistance measurement device of paddling, it is characterized in that: comprise tank (1), stilling basin (2), lightweight aluminium-plastic pipe bar (3), hydrogen balloon (4), organic glass flat board (5), to paddle building model (6), digital display tautness meter (7) and computer recorder (8), wherein, tank (1) bottom is smooth flat, stilling basin (2) is two, be positioned over tank (1) both sides respectively, lightweight aluminium-plastic pipe bar (3) is placed horizontally on tank (1), lightweight aluminium-plastic pipe bar (3) two ends are connected to hydrogen balloon (4), hydrogen balloon (4) floats in stilling basin (2) respectively, lightweight aluminium-plastic pipe bar (3) central lower is bolted organic glass flat board (5), and organic glass flat board (5) bottom is bolted again building model of paddling (6), digital display tautness meter (7) is placed horizontally on tank (1), be positioned at the upstream of building model of paddling (6) and be in same level with lightweight aluminium-plastic pipe bar (3), lightweight aluminium-plastic pipe bar (3) central authorities are connected with digital display tautness meter (7) central square beam by thin wire, and digital display tautness meter (7) connects computer recorder (8) by data line again.
2. Flow around Building resistance measurement device of paddling according to claim 1, is characterized in that: described lightweight aluminium-plastic pipe bar (3) overcentre is also equipped with little level tube device (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095674.4U CN204389145U (en) | 2015-02-10 | 2015-02-10 | To paddle Flow around Building resistance measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520095674.4U CN204389145U (en) | 2015-02-10 | 2015-02-10 | To paddle Flow around Building resistance measurement device |
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| Publication Number | Publication Date |
|---|---|
| CN204389145U true CN204389145U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520095674.4U Expired - Fee Related CN204389145U (en) | 2015-02-10 | 2015-02-10 | To paddle Flow around Building resistance measurement device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509996A (en) * | 2015-12-29 | 2016-04-20 | 西南石油大学 | Device and method for measuring resistance coefficient and lift coefficient of flow around marine riser |
| CN112857739A (en) * | 2021-03-10 | 2021-05-28 | 江苏省水利科学研究院 | Physical model water flow acting force measuring system for water tank test |
-
2015
- 2015-02-10 CN CN201520095674.4U patent/CN204389145U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509996A (en) * | 2015-12-29 | 2016-04-20 | 西南石油大学 | Device and method for measuring resistance coefficient and lift coefficient of flow around marine riser |
| CN105509996B (en) * | 2015-12-29 | 2017-12-26 | 西南石油大学 | A kind of marine riser streams the measure device and method of resistance coefficient and lift coefficient |
| CN112857739A (en) * | 2021-03-10 | 2021-05-28 | 江苏省水利科学研究院 | Physical model water flow acting force measuring system for water tank test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20170210 |
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| CF01 | Termination of patent right due to non-payment of annual fee |