Variable-pipe-diameter Reynolds experiment device

Abstract

The utility model provides a variable-pipe-diameter Reynolds experiment device, and belongs to the technical field of Reynolds experiments. The variable-pipe-diameter Reynolds experiment device comprises a supporting structure and a Reynolds experiment structure. The supporting structure comprises a transparent experiment table, a backflow part and an irradiation part, the backflow part is installed at the bottom of the transparent experiment table, the Reynolds experiment structure comprises a water storage tank, a stabilizing part, a coloring part and an experiment pipe fitting, a circulating part is installed in the water storage tank, the constant water tank is arranged on the top face of one electric elevator, and the stabilizing part is arranged on the top face of the other electric elevator. The circulating part is communicated with the constant water tank, one end of the experimental pipe fitting is communicated with the constant water tank, and the other end of the experimental pipe fitting is located above the backflow part. The color water can be clearly displayed in the daytime, observation in the experiment process is facilitated, meanwhile, the influence of experiment pipes with different pipe diameters on the color water under the same flow speed can be observed, and the experiment range is enlarged.

Description

Technical Field

[0001] The utility model relates to the technical field of Reynolds experiments, in particular to a Reynolds experiment device with a variable pipe diameter. Background Art

[0002] Reynolds revealed an important fluid flow mechanism, that is, according to the size of the flow velocity, the fluid has two different forms. When the fluid velocity is low, the fluid particles only move in one dimension along the flow direction, and there is no macroscopic mixing with the surrounding fluid, that is, stratified flow. This flow form is called laminar flow or stagnant flow. When the fluid velocity increases to a certain value, the fluid particles not only flow in the flow direction, but also move randomly in other directions, that is, there is irregular pulsation of the fluid particles. This fluid form is called turbulent flow.

[0003] At present, the traditional Renault test device takes a long time to stabilize after adjusting the valve, and the color water has low color in the water and is not easy to see clearly, which makes it difficult to achieve the real teaching purpose. At the same time, the single diameter of the experimental pipeline has a relatively small range of experiments. Therefore, it is necessary to propose a variable diameter Renault test device to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a variable pipe diameter Reynolds experimental device, which aims to improve the traditional Reynolds. After adjusting the valve, the waiting time for stabilization is long, and the color water has low color rendering in the water, which is not easy to see clearly and difficult to achieve the real teaching purpose. At the same time, the single diameter of the experimental pipeline has a relatively small range of experiments.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a Reynolds experimental device with a variable pipe diameter, which comprises a supporting structure and a Reynolds experimental structure.

[0007] The supporting structure includes a transparent experimental table, a reflux component and an irradiation component. The reflux component is installed at the bottom of the transparent experimental table, the irradiation component is installed at the bottom of the transparent experimental table, and electric lifts are installed at both ends of the top surface of the transparent experimental table. The Renault experimental structure includes a water storage tank, a constant water tank, a stabilizing component, a coloring component and an experimental pipe fitting. A circulation component is installed inside the water storage tank. The constant water tank is placed on the top surface of one of the electric lifts. The circulation component is connected to the constant water tank. An overflow plate is fixed inside the constant water tank. A steady flow orifice plate is fixed between the overflow plate and the inner wall of the constant water tank. The stabilizing component is fixed between the constant water tank and the transparent experimental table. The coloring component is installed on the top surface of the constant water tank. One end of the experimental pipe fitting is connected to the constant water tank, and the other end of the experimental pipe fitting is located above the reflux component.

[0008] In one embodiment of the utility model, the reflux component includes a vertical plate and a reflux funnel, the vertical plate is fixed to the bottom of one end of the transparent laboratory table, a reflux pipe is fixed through the inside of the vertical plate, the other end of the reflux pipe is connected to the water tank, the reflux funnel is fixed to the vertical plate through a connecting plate, and the bottom of the reflux funnel is connected to the reflux pipe.

[0009] In an embodiment of the present utility model, the illuminating element includes an incandescent lamp and a brightness adjuster, the incandescent lamp and the brightness adjuster are both installed at the bottom of the transparent experimental table, and the incandescent lamp is electrically connected to the brightness adjuster.

[0010] In one embodiment of the utility model, the circulation component includes a water pump and a water discharge telescopic tube, the water pump is installed inside the water storage tank, the output end of the water pump is connected to the water supply telescopic tube, the water supply telescopic tube passes through the transparent experimental table and is connected to the constant water tank, one end of the water discharge telescopic tube is connected to the constant water tank, and the other end of the water discharge telescopic tube is connected to the water storage tank, and the water supply telescopic tube and the water discharge telescopic tube are located on both sides of the overflow plate.

[0011] In one embodiment of the utility model, the stabilizing member includes two slide rails and a slider, the two slide rails are fixed on the top surface of the transparent laboratory table, the two slide rails are located on both sides of the one electric lift, the slider is fixed to the constant water tank, the slider is slidably connected to the inside of the slide rails, a threaded column is fixed on one side of the slider, the threaded column extends through the slide rail to the outside, and the end of the threaded column is threadedly connected to an internal threaded knob.

[0012] In one embodiment of the utility model, the coloring part includes a horizontal plate and a diversion bend pipe, the horizontal plate is fixed on the top surface of the constant water tank, the top surface of the horizontal plate is provided with a solution coloring cup I and a solution coloring cup II, the bottom of the solution coloring cup I and the solution coloring cup II are connected by a U-shaped tube, the U-shaped tube passes through the horizontal plate, and the U-shaped tube passes through a diversion bend pipe.

[0013] In one embodiment of the utility model, the experimental pipe fittings include an experimental tube I, an experimental tube II and an experimental tube III, and the experimental tube I, the experimental tube II and the experimental tube III are integrally formed. The end of the experimental tube I is connected to the constant water tank, and an elbow is formed at the end of the experimental tube III, which is located on the top surface of the reflux funnel. The bottom of the experimental tube III is placed on another electric lift through a connecting seat, and a throttling flowmeter and a flow regulating valve are installed on the experimental tube III.

[0014] In an embodiment of the present invention, the pipe fittings of the experimental tube I, the experimental tube II and the experimental tube III are arranged to increase in sequence.

[0015] The beneficial effect of the utility model is as follows: the utility model obtains a variable pipe diameter Reynolds experimental device through the above design. When in use, the circulation part is used to transport the water inside the water storage tank to the constant water tank, and the water above the overflow plate flows back to the inside of the water storage tank, and then the steady flow orifice plate is used to keep the water flow inside the constant water tank stable. At this time, the water inside the constant water tank enters the experimental pipe fittings in turn, and finally flows back to the inside of the water storage tank through the reflux part. At this time, the color solution is added to the inside of the solution coloring cup I and the solution coloring cup II, and the color solution enters the inside of the experimental pipe fittings in turn through the U-tube and the diversion elbow. The lighting part illuminates the experimental pipe fittings, so that the colored water can be more clearly displayed during the day, which is convenient for observation during the experiment. At the same time, the influence of experimental tubes with different diameters on the colored water under the same flow rate can be observed, thereby increasing the scope of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of a variable pipe diameter Reynolds experimental device provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the exploded structure of the variable diameter Renault test device and the constant water tank provided in the embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the cross-sectional structure of a constant water tank of a variable-diameter Reynolds test device provided in an embodiment of the utility model.

[0020] In the figure: 100-support structure; 110-transparent experimental table; 120-reflux component; 121-vertical board; 122-reflux pipe; 123-reflux funnel; 130-irradiation component; 131-incandescent lamp; 132-brightness regulator; 140-electric lifter; 200-Renault experimental structure; 210-water storage tank; 220-circulation component; 221-water pump; 222-water supply telescopic pipe; 223-water discharge telescopic pipe; 230-constant water tank; 231-overflow plate; 232-flow stabilizing orifice; 240-stabilizing part; 241-slide rail; 242-slider; 243-threaded column; 244-internal threaded knob; 250-coloring part; 251-cross plate; 252-solution coloring cup I; 253-solution coloring cup II; 254-U-shaped tube; 255-flow guide elbow; 260-experimental pipe fittings; 261-experimental tube I; 262-experimental tube II; 263-experimental tube III; 2631-throttling flowmeter; 2632-flow regulating valve. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0022] See also Figure 1-Figure 3 The utility model provides a technical solution: a variable pipe diameter Reynolds test device, including a support structure 100 and a Reynolds test structure 200.

[0023] See also Figure 1 The supporting structure 100 includes a transparent experimental table 110, a reflux component 120 and an irradiation component 130. The reflux component 120 is installed at the bottom of the transparent experimental table 110, and the irradiation component 130 is installed at the bottom of the transparent experimental table 110. Electric lifts 140 are installed at both ends of the top surface of the transparent experimental table 110. The electric lifts 140 can be used to conveniently adjust the height of the experiment up and down, thereby changing the pressure inside the constant water tank 230 and improving the flexibility of the experiment.

[0024] The reflux component 120 includes a vertical plate 121 and a reflux funnel 123. The vertical plate 121 is fixed at the bottom of one end of the transparent experimental table 110. A reflux pipe 122 is fixed inside the vertical plate 121. The other end of the reflux pipe 122 is connected to the water storage tank 210. The reflux funnel 123 is fixed to the vertical plate 121 through a connecting plate. The bottom of the reflux funnel 123 is connected to the reflux pipe 122. Here, the reflux component 120 can facilitate the reflux of experimental water, thereby facilitating its collection and reuse.

[0025] The irradiation member 130 includes an incandescent lamp 131 and a brightness adjuster 132, both of which are installed at the bottom of the transparent experimental table 110, and the incandescent lamp 131 is electrically connected to the brightness adjuster 132. The incandescent lamp 131 is used here to irradiate the solution inside the experimental tube 260, so that the color lines are more clearly displayed, which is convenient for clearer observation. Here, the brightness adjuster 132 can conveniently adjust the irradiation brightness and improve the flexibility of irradiation.

[0026] See also Figure 1-Figure 3 The Renault test structure 200 includes a water tank 210, a constant water tank 230, a stabilizing member 240, a coloring member 250 and an experimental pipe fitting 260. A circulation member 220 is installed inside the water tank 210. The constant water tank 230 is placed on the top surface of an electric lift 140. The circulation member 220 is connected to the constant water tank 230. An overflow plate 231 is fixed inside the constant water tank 230. A steady flow orifice plate 232 is fixed between the overflow plate 231 and the inner wall of the constant water tank 230. The stabilizing member 240 is fixed between the constant water tank 230 and the transparent experimental table 110. The coloring member 250 is installed on the top surface of the constant water tank 230. One end of the experimental pipe fitting 260 is connected to the constant water tank 230, and the other end of the experimental pipe fitting 260 is located above the reflux member 120.

[0027] The circulation component 220 includes a water pump 221 and a water discharge telescopic pipe 223. The water pump 221 is installed inside the water storage tank 210. The output end of the water pump 221 is connected to the water supply telescopic pipe 222. The water supply telescopic pipe 222 passes through the transparent experimental table 110 and is connected to the constant water tank 230. One end of the water discharge telescopic pipe 223 is connected to the constant water tank 230, and the other end of the water discharge telescopic pipe 223 is connected to the water storage tank 210. The water supply telescopic pipe 222 and the water discharge telescopic pipe 223 are located on both sides of the overflow plate 231. Here, the circulation component 220 can be used to conveniently circulate the liquid inside the water storage tank 210.

[0028] The stabilizing member 240 includes two slide rails 241 and a slider 242. The two slide rails 241 are fixed on the top surface of the transparent experimental table 110. The two slide rails 241 are located on both sides of an electric lift 140. The slider 242 is fixed to the constant water tank 230. The slider 242 is slidably connected to the inside of the slide rail 241. A threaded column 243 is fixed on one side of the slider 242. The threaded column 243 extends through the slide rail 241 to the outside. The end of the threaded column 243 is threadedly connected with an internal threaded knob 244. Here, when the electric lift 140 is started, the internal threaded knob 244 is loosened. After the constant water tank 230 moves to a suitable height, the constant water tank 230 can be more stable when in use through the extrusion of the internal threaded knob 244 and the surface of the slide rail 241.

[0029] The coloring piece 250 includes a horizontal plate 251 and a diversion bend 255. The horizontal plate 251 is fixed on the top surface of the constant water tank 230. The top surface of the horizontal plate 251 is provided with a solution coloring cup I 252 and a solution coloring cup II 253. The bottoms of the solution coloring cup I 252 and the solution coloring cup II 253 are connected through a U-shaped tube 254. A control valve is installed on the U-shaped tube 254, which can conveniently control the downward flow of the solution inside the solution coloring cup I 252 and the solution coloring cup II 253. The U-shaped tube 254 passes through the horizontal plate 251. The U-shaped tube 254 passes through a diversion bend 255. The end of the diversion bend 255 is located on the central axis of the experimental tube I 261. This is conducive to the solution of the solution coloring cup I 252 and the solution coloring cup II 253 to better enter the interior of the experimental tube 260, thereby preventing the solution from diffusing inside the constant water tank 230.

[0030] The experimental pipe fitting 260 includes an experimental tube I 261, an experimental tube II 262 and an experimental tube III 263. The experimental tube I 261, the experimental tube II 262 and the experimental tube III 263 are integrally formed. The end of the experimental tube I 261 is connected to the constant water tank 230. The end of the experimental tube III 263 is formed with an elbow, and the elbow is located on the top surface of the reflux funnel 123. The bottom of the experimental tube III 263 is placed on another electric lift 140 through a connecting seat. A throttling flowmeter 2631 and a flow regulating valve 2632 are installed on the experimental tube III 263. The pipe fittings of the experimental tube I 261, the experimental tube II 262 and the experimental tube III 263 are arranged to increase in size in sequence. In this way, multiple diameter pipeline experiments can be carried out at one time during the experiment, and the experiment can be more flexible and convenient.

[0031] Specifically, the working principle of the variable pipe diameter Reynolds experimental device is as follows: when in use, the water pump 221 is used to transport the water inside the water storage tank 210 through the upper water telescopic pipe 222 to the inside of the constant water tank 230, and the water above the overflow plate 231 flows back to the inside of the water storage tank 210 through the lower water telescopic pipe 223, and then the flow stabilizing orifice plate 232 is used to keep the water flow inside the constant water tank 230 stable. At this time, the water inside the constant water tank 230 enters the experimental tube I 261, the experimental tube II 262 and the experimental tube III 263 in turn, and the flow in the tube is measured by the throttling flowmeter 2631, and finally flows into the reflux funnel 123 and enters through the reflux pipe 122. Inside the water tank 210, the color solution is added to the solution coloring cup Ⅰ252 and the solution coloring cup Ⅱ253. The color solution passes through the U-tube 254 and the diversion bend 255 and enters the inside of the experimental tube Ⅰ261, the experimental tube Ⅱ262 and the experimental tube Ⅲ263 in turn. At the same time, the incandescent lamp 131 is turned on and the brightness of the incandescent lamp 131 is adjusted by the brightness adjuster 132. The incandescent lamp 131 is used to illuminate the experimental tube 260, so that the colored water can be more clearly displayed during the day, which is convenient for observation during the experiment. At the same time, the influence of experimental tubes with different diameters on the colored water under the same flow rate can be observed, thereby increasing the scope of the experiment.

[0032] It should be noted that the specific model specifications of the water pump 221 and the incandescent lamp 131 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0033] The power supply and principle of the water pump 221 and the incandescent lamp 131 are clear to those skilled in the art and will not be described in detail here.

[0034] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A variable pipe diameter Reynolds test device, comprising a support structure (100) and a Reynolds test structure (200) mounted on the support structure (100), characterized in that: The support structure (100) comprises a transparent experimental platform (110), a reflow component (120) and an irradiation component (130); the reflow component (120) is installed at the bottom of the transparent experimental platform (110); the irradiation component (130) is installed at the bottom of the transparent experimental platform (110); and electric lifts (140) are installed at both ends of the top surface of the transparent experimental platform (110); The Renault test structure (200) comprises a water storage tank (210), a constant water tank (230), a stabilizing member (240), a coloring member (250), and a test pipe member (260); a circulation member (220) is installed inside the water storage tank (210); the constant water tank (230) is placed on the top surface of one of the electric lifts (140); the circulation member (220) is connected to the constant water tank (230); an overflow plate (231) is fixed inside the constant water tank (230). A flow stabilizing orifice plate (232) is fixed between the overflow plate (231) and the inner wall of the constant water tank (230), the stabilizing member (240) is fixed between the constant water tank (230) and the transparent experimental table (110), the coloring member (250) is installed on the top surface of the constant water tank (230), one end of the experimental pipe fitting (260) is connected to the constant water tank (230), and the other end of the experimental pipe fitting (260) is located above the return member (120).

2. A variable pipe diameter Reynolds test device according to claim 1, characterized in that: The reflux member (120) comprises a vertical plate (121) and a reflux funnel (123); the vertical plate (121) is fixed to the bottom of one end of the transparent experimental table (110); a reflux pipe (122) is fixedly passed through the interior of the vertical plate (121); the other end of the reflux pipe (122) is in communication with the water storage tank (210); the reflux funnel (123) is fixed to the vertical plate (121) via a connecting plate; the bottom of the reflux funnel (123) is in communication with the reflux pipe (122).

3. A variable pipe diameter Reynolds test device according to claim 1, characterized in that: The irradiating element (130) comprises an incandescent lamp (131) and a brightness adjuster (132); the incandescent lamp (131) and the brightness adjuster (132) are both installed at the bottom of the transparent experimental platform (110); the incandescent lamp (131) and the brightness adjuster (132) are electrically connected.

4. A variable pipe diameter Reynolds test device according to claim 1, characterized in that: The circulation member (220) comprises a water pump (221) and a water discharge telescopic pipe (223); the water pump (221) is installed inside the water storage tank (210); the output end of the water pump (221) is connected to a water supply telescopic pipe (222); the water supply telescopic pipe (222) passes through the transparent experimental table (110) and is in communication with the constant water tank (230); one end of the water discharge telescopic pipe (223) is in communication with the constant water tank (230); the other end of the water discharge telescopic pipe (223) is in communication with the water storage tank (210); the water supply telescopic pipe (222) and the water discharge telescopic pipe (223) are located on both sides of the overflow plate (231).

5. The variable pipe diameter Reynolds test device according to claim 1, characterized in that: The stabilizing member (240) includes two slide rails (241) and a slider (242), the two slide rails (241) are fixed on the top surface of the transparent experimental table (110), the two slide rails (241) are located on both sides of the one electric lift (140), the slider (242) is fixed to the constant water tank (230), the slider (242) is slidably connected to the inside of the slide rail (241), a threaded column (243) is fixed on one side of the slider (242), the threaded column (243) passes through the slide rail (241) and extends to the outside, and the end of the threaded column (243) is threadedly connected to an internal threaded knob (244).

6. The variable pipe diameter Reynolds test device according to claim 1, characterized in that: The coloring member (250) comprises a transverse plate (251) and a diversion elbow (255); the transverse plate (251) is fixed to the top surface of the constant water tank (230); a solution coloring cup I (252) and a solution coloring cup II (253) are arranged on the top surface of the transverse plate (251); the bottoms of the solution coloring cup I (252) and the bottoms of the solution coloring cup II (253) are connected via a U-shaped tube (254); the U-shaped tube (254) passes through the transverse plate (251); and the diversion elbow (255) passes through the U-shaped tube (254).

7. The variable pipe diameter Reynolds test device according to claim 2, characterized in that: The experimental pipe fitting (260) comprises an experimental pipe I (261), an experimental pipe II (262) and an experimental pipe III (263); the experimental pipe I (261), the experimental pipe II (262) and the experimental pipe III (263) are integrally formed; the end of the experimental pipe I (261) is connected to the constant water tank (230); the end of the experimental pipe III (263) is formed with an elbow, and the elbow is located on the top surface of the reflux funnel (123); the bottom of the experimental pipe III (263) is placed on another electric lift (140) through a connecting seat; and a throttling flowmeter (2631) and a flow regulating valve (2632) are installed on the experimental pipe III (263).

8. The variable pipe diameter Reynolds test device according to claim 7, characterized in that: The pipe fittings of the experimental tube I (261), the experimental tube II (262) and the experimental tube III (263) are arranged to increase in size in sequence.

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