CN202976606U - Flow pattern demonstration experimental instrument - Google Patents
Flow pattern demonstration experimental instrument Download PDFInfo
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- CN202976606U CN202976606U CN 201220623808 CN201220623808U CN202976606U CN 202976606 U CN202976606 U CN 202976606U CN 201220623808 CN201220623808 CN 201220623808 CN 201220623808 U CN201220623808 U CN 201220623808U CN 202976606 U CN202976606 U CN 202976606U
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Abstract
The utility model discloses a flow pattern demonstration experimental instrument. The flow pattern demonstration experimental instrument includes a cavity formed by a backplane and a color organic glass cover; a flow visualization flow channel and backwater channels arranged at the left and right sides of the flow visualization flow channel; a water-entering passage is arranged below the cavity; the lower end of the flow visualization flow channel is communicated with the water-entering passage; the upper end of the flow visualization flow channel is communicated with the two backwater channels; the cavity is further provided with an aeration quantity regulating valve and a water adding hole; a flow visualization flow channel bottom plate and a fluorescent lamp are arranged between the flow visualization flow channel and the backplane; and a transparent organic glass panel is arranged between the flow visualization flow channel and the color organic glass cover. The flow pattern demonstration experimental instrument of the utility model can be used to demonstrate a variety of types of typical flow phenomena and detour flow situations in hydraulic engineering and teaching.
Description
Technical field
The utility model belongs to fluid mechanics test apparatus technical field, is specifically related to a kind of flow pattern demonstration test instrument.
Background technology
Flow in hydraulic engineering is very complicated, this is not only because current have the lift-off phenomenon that viscosity can produce current, and because the change of boundary condition makes the flow direction of current, flow characteristics also can change, even whirlpool can appear, if these flow phenomenons do not have special experimental apparatus demonstration to be difficult to express clearly in teaching.
In order to demonstrate intuitively flow phenomenon, people have just made the distinguished and admirable line instrument of cigarette and oily streamline instrument, the distinguished and admirable line instrument of cigarette forms runner by cylinder, streamlined blade, supply cigarette by flue to runner, make cigarette around cylinder and blades flows, observing mobility status, the main problem of this demonstration instrument be runner single, need a large amount of mosquito-repellent incenses as the source of cigarette, by fan blower, cigarette is blown in runner, extremely inconvenient during experiment.Oil streamline instrument is to establish the various objects that stream in runner, when oil flows in runner, can see streamline and the flow phenomenon that streams object, the main problem of this instrument is that flow surface is shorter, runner is single, the speed of oil flow is slow, the flow separation phenomenon is not obvious, almost can't see.Zhejiang University has developed self-loopa flow pattern demonstrator, take bubble as the spike medium, is provided with the specific border flow field in slit conduit, in order to show the multiple mobile maps such as interior stream, outflow, fluidic.One of characteristics of this flow pattern demonstrator are to adopt bistable to amplify fluid valve to change mobile direction, but seldom see in hydraulic engineering.Develop again afterwards the self-loopa flow pattern Display of metal flow line instrument of three types, and all adopted electrochemical process to show streamline, formed flow-passing surface with the slit runner, flow process is taked the closed self-circulation form, water pump is opened, and hydraulic fluid flows and automatic staining, but the content of instrument display is simple and runner is few.
Summary of the invention
The purpose of this utility model is to provide a kind of flow pattern demonstration test instrument, can be used for the common multiple typical flow phenomenon of demonstration hydraulic engineering and teaching and stream situation.
The technical scheme that the utility model adopts is, a kind of flow pattern demonstration test instrument, comprise the cavity that is consisted of by backboard and chromatic organic glass cover, be provided with FLOW VISUALIZATION runner and the backwater road that is positioned at the FLOW VISUALIZATION runner left and right sides in cavity, the below of cavity is provided with intake tunnel, FLOW VISUALIZATION runner lower end is connected with this intake tunnel, and FLOW VISUALIZATION runner upper end is connected with two backwater roads, also is provided with air entrainment variable valve and water inlet on cavity; FLOW VISUALIZATION runner base plate and daylight lamp are installed between FLOW VISUALIZATION runner and backboard, are provided with the transparent organic glass panel between FLOW VISUALIZATION runner and chromatic organic glass cover.
characteristics of the present utility model also are, the below of cavity is provided with supply tank and water pump, be connected by pump water inlet between water pump and supply tank, the lower end in backwater road communicates with supply tank, intake tunnel is the upper hose that is connected on the water pump water outlet end, the side of supply tank is provided with sees the water hole, the cavity arranged outside is useful on the switch of controlling daylight lamp and water pump, be provided with in supply tank for the penetration pipe that the daylight lamp power source line is installed, water pump is arranged on the housing that is positioned at the supply tank below, have a plurality of air holes on the sidewall of this housing, the top of backboard is provided with hanging hole.
The FLOW VISUALIZATION runner comprises at least more than one runner element: the first flow element comprises from top to bottom being communicated with successively unexpected the amplifications section that arranges and the section of dwindling suddenly; The second runner element comprises that being communicated with successively from top to bottom the Venturi meter, six that arranges spends anemostat and right angle flow-nozzle metre gradually; The 3rd runner element comprises from top to bottom being communicated with successively the eleventh that arranges anemostat, movable ball valve, grid section, orifice flowmeter and circular arc inlet nipple flowmeter gradually; The 4th runner element comprises that the even straight tube, parallel pipeline and the triangle that are communicated with successively from top to bottom setting are around the body section; The 5th runner element comprises being communicated with successively from top to bottom 45 degree elbow sections, 90 degree elbow sections, 60 degree elbow sections and the 30 degree elbow sections that arrange; The 6th runner element comprises being communicated with successively from top to bottom minute boom section, the ellipse section of streaming and the bridge pier section of streaming that arranges; The 7th runner element comprises that from top to bottom being communicated with successively the peripheral flow section, the brother's court of a feudal ruler wing 480 type sections and 17 that arrange spends contraction section gradually, and brother court of a feudal ruler wing 480 type section arranged outside have brother court of a feudal ruler wing NACA23012 type.
The beneficial effects of the utility model are, can demonstrate multiple flow phenomenon, and can regulate air entrainment, and flow phenomenon is abundant in content, the lines of streamline, to stream vortex clear, directly perceived, and for wall-hanging, volume is little, simple in structure, and is easy to manufacture, easy to operate.
Description of drawings
Fig. 1 is the structural representation of the utility model flow pattern demonstration test instrument;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the structural representation of the first flow element in the utility model;
Fig. 4 is the structural representation of the second runner element in the utility model;
Fig. 5 is the structural representation of the 3rd runner element in the utility model;
Fig. 6 is the structural representation of the 4th runner element in the utility model;
Fig. 7 is the structural representation of the 5th runner element in the utility model;
Fig. 8 is the structural representation of the 6th runner element in the utility model;
Fig. 9 is the structural representation of the 7th runner element in the utility model;
wherein, 1, supply tank, 2, water pump, 3, pump water inlet, 4, upper hose, 5, switch, 6, penetration pipe, 7, the air entrainment variable valve, 8, water inlet, 9, the FLOW VISUALIZATION runner, 10, the chromatic organic glass cover, 11, hanging hole, 12, the backwater road, 13, daylight lamp, 14, the transparent organic glass panel, 15, FLOW VISUALIZATION runner base plate, 16, see the water hole, 17, backboard, 18, air hole, 19, suddenly amplify section, 20. sections of dwindling suddenly, 21, Venturi meter, 22, six spend anemostat gradually, 23, the right angle flow-nozzle metre, 24, eleventh is anemostat gradually, and 25, movable ball valve, 26, the grid section, 27, orifice flowmeter, 28, circular arc inlet nipple flowmeter, 29, even straight tube, 30, parallel pipeline, 31, triangle is around body section, 32, 45 degree elbow sections, 33, 90 degree elbow sections, 34, 60 degree elbow sections, 35, 30 degree elbow sections, 36, divide the boom section, 37, the ellipse section of streaming, 38, the bridge pier section of streaming, 39, the peripheral flow section, 40, brother court of a feudal ruler wing 480 type sections, 41, 17 spend contraction section gradually, 42, brother court of a feudal ruler wing NACA23012 type section.
Embodiment
As depicted in figs. 1 and 2, the utility model flow pattern demonstration test instrument, comprise the cavity that is consisted of by backboard 17 and chromatic organic glass cover 10, be provided with FLOW VISUALIZATION runner 9 in cavity and be positioned at the backwater road 12 of FLOW VISUALIZATION runner 9 left and right sides, the below of cavity is provided with intake tunnel, FLOW VISUALIZATION runner 9 lower ends are connected with this intake tunnel, and FLOW VISUALIZATION runner 9 upper ends are connected with two backwater roads 12, also are provided with air entrainment variable valve 7 and water inlet 8 on cavity.FLOW VISUALIZATION runner base plate 15 and daylight lamp 13 are installed between FLOW VISUALIZATION runner 9 and backboard 17, are provided with transparent organic glass panel 14 between FLOW VISUALIZATION runner 9 and chromatic organic glass cover 10.The below of cavity is provided with supply tank 1 and water pump 2, is connected by pump water inlet 3 between water pump 2 and supply tank 1, and the lower end in two backwater roads 12 all communicates with supply tank 1, and intake tunnel is the upper hose 4 that is connected on water pump 2 water sides.The side of supply tank 1 is provided with sees water hole 16.The cavity arranged outside is useful on the switch 5 of controlling daylight lamp 13 and water pump 2, is provided with in supply tank 1 for the penetration pipe 6 that daylight lamp 13 power leads are installed.Water pump 2 is arranged on the housing that is positioned at supply tank 1 below, has a plurality of air holes 18 on the sidewall of this housing.The top of backboard 17 is provided with hanging hole 11.
The FLOW VISUALIZATION runner comprises at least more than one runner element: as shown in Figure 3, the first flow element comprises from top to bottom being communicated with successively unexpected amplifications that arrange sections 19 and the section of dwindling 20 suddenly.As shown in Figure 4, the second runner element comprises that being communicated with successively from top to bottom the Venturi meter 21, six that arranges spends anemostat 22 and right angle flow-nozzle metre 23 gradually.As shown in Figure 5, the 3rd runner element comprises from top to bottom being communicated with successively the eleventh that arranges anemostat 24, movable ball valve 25, grid section 26, orifice flowmeter 27 and circular arc inlet nipple flowmeter 28 gradually.As shown in Figure 6, the 4th runner element comprises that the even straight tube 29, parallel pipeline 30 and the triangle that are communicated with successively from top to bottom setting are around body section 31.As shown in Figure 7, the 5th runner element comprises being communicated with successively from top to bottom 45 degree elbow section 32,90 degree elbow section 33,60 degree elbow sections 34 and the 30 degree elbow sections 35 that arrange.As shown in Figure 8, the 6th runner element comprises being communicated with successively from top to bottom minute boom section 36, the ellipse section of streaming 37 and the bridge pier section of streaming 38 that arranges.As shown in Figure 9, the 7th runner element comprises that from top to bottom being communicated with successively the peripheral flow section 39, the brother's court of a feudal ruler wing 480 type sections 40 and 17 that arrange spends contraction section 41 gradually, and in brother court of a feudal ruler wing 480 type section 40 arranged outside, brother court of a feudal ruler wing NACA23012 type 42 is arranged.
The principle of work of the utility model flow pattern demonstration test instrument is: this instrument is take water as actuating medium, when hydraulic fluid is driven into FLOW VISUALIZATION runner 9 by water pump, when the backwater road 12 by both sides flows into supply tank 1, mixed air in current, when current pass through FLOW VISUALIZATION runner 9 again, be aerated flow, bubble has just become the spike medium.How much can being regulated by air entrainment variable valve 7 of air.When aerated flow flows at FLOW VISUALIZATION runner 9, countless minute bubbles have been formed with water movement, under the setting off of daylight lamp 13 irradiations and FLOW VISUALIZATION runner base plate 15, minute bubbles send bright refract light, clearly demonstrate the image of various different flow fields flow.
Because FLOW VISUALIZATION runner 9 is designed to multiple different runner element, in order to show streamline, trace under various boundary, stream, the nowed forming of the multiple mobile maps such as lift-off, vortex, interflow, shunting, jet, bend circulation and the characteristic of the inner particle movement of current thereof.In the present embodiment, the FLOW VISUALIZATION runner is comprised of 7 runner elements, and each runner element is independently device of a cover, can use separately, also can use simultaneously.
Operation steps of the present utility model is:
1, the appropriate water of packing in supply tank 1 is advisable to be no more than the height of seeing water hole 16, and water quality is cold boiling water or distilled water preferably, and water quality is remained unchanged for a long period of time.
2, close air entrainment variable valve 7, open switch 5, the backwater road 12 that water pump 2 makes current pass through FLOW VISUALIZATION runner 9 and both sides flows into supply tanks 1, watches backwater road 12 whether to be full of water, as underfill water, can close swap switch 5 and open, repeatedly gets final product several times.
3, slowly regulate air entrainment variable valve 7 and change air entrainment, make it to reach optimal display result, air entrainment is unsuitable excessive, produces vibrations otherwise can block current.
4, watch the flow pattern map picture of FLOW VISUALIZATION runner 9.Mainly watch streamline, trace, stream, the flow phenomenon such as lift-off, vortex, interflow, shunting, jet, bend circulation, dispersion of flow, current contraction.
5, experiment after finishing restores to the original state instrument.
Claims (3)
1. flow pattern demonstration test instrument, it is characterized in that, comprise the cavity that is consisted of by backboard (17) and chromatic organic glass cover (10), be provided with FLOW VISUALIZATION runner (9) in described cavity and be positioned at the backwater road (12) of described FLOW VISUALIZATION runner (9) left and right sides, the below of described cavity is provided with intake tunnel, described FLOW VISUALIZATION runner (9) lower end is connected with this intake tunnel, described FLOW VISUALIZATION runner (9) upper end is connected with two backwater roads (12), also is provided with air entrainment variable valve (7) and water inlet (8) on described cavity; FLOW VISUALIZATION runner base plate (15) and daylight lamp (13) are installed between described FLOW VISUALIZATION runner (9) and backboard (17), are provided with transparent organic glass panel (14) between described FLOW VISUALIZATION runner (9) and chromatic organic glass cover (10).
2. according to flow pattern demonstration test instrument claimed in claim 1, it is characterized in that, the below of described cavity is provided with supply tank (1) and water pump (2), be connected by pump water inlet (3) between described water pump (2) and supply tank (1), the lower end in described backwater road (12) communicates with supply tank (1), described intake tunnel is for being connected to the upper hose (4) on water pump (2) water side, the side of described supply tank (1) is provided with sees water hole (16), described cavity arranged outside is useful on the switch (5) of controlling daylight lamp (13) and water pump (2), be provided with in described supply tank (1) for the penetration pipe (6) that daylight lamp (13) power lead is installed, described water pump (2) is arranged on the housing that is positioned at supply tank (1) below, have a plurality of air holes (18) on the sidewall of described this housing, the top of described backboard (17) is provided with hanging hole (11).
3. according to the described flow pattern demonstration test instrument of claim 1 or 2, it is characterized in that, described FLOW VISUALIZATION runner comprises at least more than one runner element: the first flow element comprises the unexpected amplification section (19) of connection setting and the section of dwindling (20) successively suddenly from top to bottom; The second runner element comprises that being communicated with successively from top to bottom the Venturi meter (21), six that arranges spends anemostat (22) and right angle flow-nozzle metre (23) gradually; The 3rd runner element comprises from top to bottom being communicated with successively the eleventh that arranges anemostat (24), movable ball valve (25), grid section (26), orifice flowmeter (27) and circular arc inlet nipple flowmeter (28) gradually; The 4th runner element comprises that the even straight tube (29), parallel pipeline (30) and the triangle that are communicated with successively from top to bottom setting are around body section (31); The 5th runner element comprises being communicated with successively from top to bottom 45 degree elbow sections (32), 90 degree elbow sections (33), 60 degree elbow sections (34) and the 30 degree elbow sections (35) that arrange; The 6th runner element comprises being communicated with successively from top to bottom minute boom section (36), the ellipse section of streaming (37) and the bridge pier section of streaming (38) that arranges; The 7th runner element, comprise that from top to bottom being communicated with successively the peripheral flow section (39), the brother's court of a feudal ruler wing 480 type sections (40) and 17 that arrange spends contraction section (41) gradually, described brother court of a feudal ruler wing 480 type section (40) arranged outside have brother's court of a feudal ruler wing NACA23012 type (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220623808 CN202976606U (en) | 2012-11-22 | 2012-11-22 | Flow pattern demonstration experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220623808 CN202976606U (en) | 2012-11-22 | 2012-11-22 | Flow pattern demonstration experimental instrument |
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| Publication Number | Publication Date |
|---|---|
| CN202976606U true CN202976606U (en) | 2013-06-05 |
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ID=48517651
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220623808 Expired - Fee Related CN202976606U (en) | 2012-11-22 | 2012-11-22 | Flow pattern demonstration experimental instrument |
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| Country | Link |
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| CN (1) | CN202976606U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104504963B (en) * | 2015-01-10 | 2017-02-08 | 瞿雨菁 | Fluid demonstrator |
| CN107085996A (en) * | 2017-06-28 | 2017-08-22 | 天津中德应用技术大学 | Fluid demonstrating experiment device |
| CN107978214A (en) * | 2017-12-27 | 2018-05-01 | 清华大学 | Automatic aeration oil stream line display device and automatic aeration method |
| CN109243282A (en) * | 2018-11-12 | 2019-01-18 | 河海大学 | A kind of totally enclosed type flow from gated outlet demonstrating experiment device |
| DE102018203833A1 (en) * | 2018-03-14 | 2019-09-19 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for inspecting a component for a motor vehicle |
| CN110686864A (en) * | 2019-11-01 | 2020-01-14 | 中国人民解放军海军工程大学 | Multirow movable cascade flow field experimental apparatus |
| CN110807974A (en) * | 2018-08-06 | 2020-02-18 | 吉林市小小爱迪生教育科技有限公司 | Demonstration device for simulating ocean eddy by using submersible pump |
| CN113077691A (en) * | 2021-03-09 | 2021-07-06 | 浙江大学 | Experiment teaching device for researching object streaming problem |
-
2012
- 2012-11-22 CN CN 201220623808 patent/CN202976606U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104504963B (en) * | 2015-01-10 | 2017-02-08 | 瞿雨菁 | Fluid demonstrator |
| CN107085996A (en) * | 2017-06-28 | 2017-08-22 | 天津中德应用技术大学 | Fluid demonstrating experiment device |
| CN107978214A (en) * | 2017-12-27 | 2018-05-01 | 清华大学 | Automatic aeration oil stream line display device and automatic aeration method |
| DE102018203833A1 (en) * | 2018-03-14 | 2019-09-19 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for inspecting a component for a motor vehicle |
| CN110807974A (en) * | 2018-08-06 | 2020-02-18 | 吉林市小小爱迪生教育科技有限公司 | Demonstration device for simulating ocean eddy by using submersible pump |
| CN109243282A (en) * | 2018-11-12 | 2019-01-18 | 河海大学 | A kind of totally enclosed type flow from gated outlet demonstrating experiment device |
| CN110686864A (en) * | 2019-11-01 | 2020-01-14 | 中国人民解放军海军工程大学 | Multirow movable cascade flow field experimental apparatus |
| CN113077691A (en) * | 2021-03-09 | 2021-07-06 | 浙江大学 | Experiment teaching device for researching object streaming problem |
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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: 20130605 Termination date: 20151122 |
|
| EXPY | Termination of patent right or utility model |