Electrochemical display laminar flow lower critical experiment device

Abstract

The utility model provides an electrochemical display laminar flow lower critical experiment device, and belongs to the technical field of experiment devices. The electrochemical display laminar flow lower critical experiment device comprises a supporting structure and an experiment structure. The supporting structure comprises an experiment table, a storage battery is arranged on one side of the top face of the experiment table, the positive end and the negative end of the storage battery are both connected with electric leads, the experiment structure comprises a water storage tank, an experiment pipe and a digital display flowmeter, the electric leads are connected with the steel needle, one end of the experiment pipe is communicated with the buffer transition piece, and the other end of the experiment pipe is communicated with the digital display flowmeter. The two steel pipes are connected with a sensor on the digital display flowmeter through hoses, and the liquid inlet end of the backflow piece is located below the end of the experiment pipe. The storage battery is used for replacing colored water, the step of preparing the colored water is avoided, polluted water is reduced, water in the water tank does not need to be replaced frequently, displayed lines are clearer, observation in the experiment process is facilitated, and time and convenience are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental devices, in particular to an electrochemical display laminar flow critical experimental device. Background Art

[0002] The critical experiment under laminar flow is an instrument for observing the flow state and conversion process of laminar flow and turbulent flow and measuring the critical Reynolds number.

[0003] At present, the traditional display of critical experimental color water under laminar flow is troublesome to prepare, and it is easy to pollute the water and change the color of the water. The water in the water tank needs to be replaced frequently, so it cannot be opened for a long time, and there must be no vibration, otherwise the experimental observation cannot be carried out, which is more troublesome to use. Therefore, it is necessary to propose an electrochemical display critical experimental device under laminar flow to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an electrochemical display laminar flow critical experiment device, which aims to improve the traditional display laminar flow critical experiment color water preparation is troublesome, and it is easy to pollute the water and change the color of the water. The water in the water tank needs to be replaced frequently, so it cannot be opened for a long time, and there must be no vibration, otherwise the experimental observation cannot be carried out, which is more troublesome to use.

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

[0006] The utility model provides an electrochemical display laminar flow critical experimental device, which comprises a supporting structure and an experimental structure.

[0007] The supporting structure includes an experimental table, a battery is arranged on one side of the top surface of the experimental table, and the positive and negative terminals of the battery are connected to conductive wires. The experimental structure includes a water tank, a buffer transition piece, an experimental tube and a digital flow meter. The water tank is connected to the buffer transition piece through a circulating flow piece. A steel needle is hung on the buffer transition piece, and the conductive wire is connected to the steel needle. One end of the experimental tube is connected to the cache transition piece. A flow regulating valve is installed on the experimental tube. The experimental tube is installed on the top surface of the experimental table. Two steel pipes are connected and fixed on the experimental tube, and the two steel pipes are connected to the sensor on the digital flow meter through a hose. The water tank is connected to a reflux piece, and the liquid inlet end of the reflux piece is located below the end of the experimental tube.

[0008] In one embodiment of the utility model, a support plate is fixed at the bottom of the laboratory table, the digital flow meter is placed on the top surface of the support plate, and a vertical plate is fixed below one end of the laboratory table.

[0009] In one embodiment of the utility model, the circulating component includes a water pump and a downpipe, the water pump is installed inside the water tank, an uppipe is installed at the water outlet of the water pump, and one end of the downpipe is connected to the top surface of the water tank.

[0010] In one embodiment of the utility model, the buffer transition piece includes a constant water tank, which is fixed on the top surface of the laboratory table, and an overflow plate and a flow stabilizer are fixed inside the constant water tank. The upper water pipe is connected to the constant water tank, and the connection point of the upper water pipe is located between the overflow plate and the flow stabilizer. The steel needle is hung on the wall of the constant water tank through a hook, and the end of the steel needle is located in front of the axis of the laboratory tube. The other end of the lower water pipe is connected to the constant water tank, and the connection point of the lower water pipe is located on one side of the overflow plate.

[0011] In an embodiment of the present utility model, through holes are evenly distributed on the surface of the flow stabilizing plate.

[0012] In an embodiment of the utility model, a support is provided at the bottom of one end of the experimental tube, the support is installed on the top surface of the experimental table, and an elbow is formed at the end of the experimental tube.

[0013] In one embodiment of the utility model, the reflux component includes a reflux pipe and a reflux funnel, one end of the reflux pipe is connected to the water tank, the other end of the reflux pipe passes through the vertical plate and extends to the outside, the reflux funnel is fixed to the vertical plate through a horizontal plate, the lower end of the reflux funnel is connected to the other end of the reflux pipe, and the reflux pipe is located below the elbow.

[0014] The beneficial effects of the utility model are as follows: the utility model is an electrochemical display laminar flow subcritical experimental device obtained by the above design. When in use, the flow regulating valve is opened and the digital flow meter value is adjusted to zero, and the water inside the water storage tank is transported to the inside of the constant water tank through the upper water pipe by a water pump. Due to the setting of the overflow plate, the internal water level can be kept stable, and the flow stabilizing plate can keep the water entering the experimental tube stable. At this time, the water inside the constant water tank flows into the experimental tube and flows into the inside of the water storage tank through the reflux funnel and the reflux pipe. At this time, the storage battery is turned on to act on the steel needle under the action of the conductive wire, so that the conductive wire electrode is energized and connected to the steel needle, and the positive and negative electrodes respectively generate hydrogen ions and hydroxide ions. There is an acid-base indicator in the experimental color water, which makes the water inside the experimental tube appear red, thereby replacing the experimental water. At the same time, the digital flow meter is used to display the measurement data. In this way, the storage battery is used to replace the color water, which avoids the steps of color water modulation, reduces polluted water, and does not need to frequently replace the water in the water tank. Moreover, the lines that appear are clearer, which is convenient for observation during the experiment, saving time and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] Figure 1 It is a schematic diagram of the structure of the critical experimental device of electrochemical display laminar flow provided by the embodiment of the utility model;

[0017] Figure 2 A schematic diagram of a flow stabilizing plate of an electrochemical display laminar subcritical experimental device provided in an embodiment of the utility model.

[0018] In the figure: 100-support structure; 110-laboratory table; 111-support plate; 112-vertical plate; 120-battery; 121-conductive wire; 200-experimental structure; 210-water storage tank; 220-circulating part; 221-water pump; 222-upper water pipe; 223-lower water pipe; 230-buffer transition piece; 231-constant water tank; 232-overflow plate; 233-stabilizing plate; 240-steel needle; 260-experimental tube; 261-flow regulating valve; 262-support; 263-elbow; 264-steel pipe; 270-digital flowmeter; 271-hose; 280-reflux part; 281-reflux pipe; 282-reflux funnel. DETAILED DESCRIPTION

[0019] 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

[0020] See also Figure 1 and Figure 2 The utility model provides a technical solution: an electrochemical display laminar flow critical experimental device, including a support structure 100 and an experimental structure 200.

[0021] See also Figure 1The support structure 100 includes a laboratory table 110, and a battery 120 is arranged on one side of the top surface of the laboratory table 110. The positive and negative ends of the battery 120 are connected to conductive wires 121. Here, the battery 120 is electrically connected to a battery switch through a connecting wire for controlling the switch of the battery 120.

[0022] A support plate 111 is fixed to the bottom of the experimental table 110, and the digital flow meter 270 is placed on the top surface of the support plate 111. A vertical plate 112 is fixed below one end of the experimental table 110, where the vertical plate 112 is used to fix the reflux pipe 281 and the reflux funnel 282, thereby improving the stability of use.

[0023] See also Figure 1 and Figure 2 The experimental structure 200 includes a water storage tank 210, a buffer transition piece 230, an experimental tube 260 and a digital flow meter 270. The water storage tank 210 and the buffer transition piece 230 are connected through a circulation piece 220. A steel needle 240 is hung on the buffer transition piece 230. The conductive wire 121 is connected to the steel needle 240. Here, the conductive wire 121 electrode is energized and connected to the steel needle 240. The positive and negative electrodes generate hydrogen ions and hydroxide ions respectively. The acid-base indicator in the experimental water will To make the water appear red, one end of the experimental tube 260 is connected to the buffer transition piece 230, a flow regulating valve 261 is installed on the experimental tube 260, the experimental tube 260 is installed on the top surface of the experimental table 110, two steel pipes 264 are connected and fixed on the experimental tube 260, the two steel pipes 264 are connected to the sensor on the digital flow meter 270 through a hose 271, and a reflux piece 280 is connected to the water storage tank 210, and the liquid inlet end of the reflux piece 280 is located below the end of the experimental tube 260.

[0024] The circulating part 220 includes a water pump 221 and a downpipe 223. The water pump 221 is installed inside the water storage tank 210. The water outlet of the water pump 221 is installed with an uppipe 222. One end of the downpipe 223 is connected to the top surface of the water storage tank 210. The buffer transition part 230 includes a constant water tank 231. The constant water tank 231 is fixed to the top surface of the experimental table 110. An overflow plate 232 and a flow stabilizing plate 233 are fixed inside the constant water tank 231. The uppipe 222 is connected to the constant water tank 231. The connection point of the uppipe 222 is located between the overflow plate 232 and the flow stabilizing plate 233. The steel needle 240 is hung on the wall of the constant water tank 231 by a hook. The end of the steel needle 240 is located at the experimental In front of the axis of tube 260, the other end of the downpipe 223 is connected to the constant water tank 231, and the connection point of the downpipe 223 is located on one side of the overflow plate 232; there are through holes evenly distributed on the surface of the flow stabilizing plate 233, where the water pump 221 can be used to transport water to the inside of the constant water tank 231, thereby completing the circulation flow. The height of the overflow plate 232 here is lower than the height of the constant water tank 231, so that the water above the overflow plate 232 will flow to the other side to maintain the stability of the liquid level inside the constant water tank 231. The matrix through holes formed inside the flow stabilizing plate 233 can slow down the upwelling of water, thereby maintaining the stability of the water flow entering the experimental tube 260, which is beneficial to improving the stability of the experiment.

[0025] A support 262 is provided at the bottom of one end of the experimental tube 260, and the support 262 is installed on the top surface of the experimental table 110. An elbow 263 is formed at the end of the experimental tube 260, where the support 262 can facilitate the experimental tube 260 to be supported and fixed to maintain stability; the reflux component 280 includes a reflux pipe 281 and a reflux funnel 282, one end of the reflux pipe 281 is connected to the water tank 210, and the other end of the reflux pipe 281 extends to the outside through the vertical plate 112, and the reflux funnel 282 is fixed to the vertical plate 112 through the horizontal plate, and the lower end of the reflux funnel 282 is connected to the other end of the reflux pipe 281, and the reflux pipe 281 is located below the elbow 263, where the reflux component 280 can facilitate the reflux of liquid.

[0026] Specifically, the working principle of the electrochemical display laminar flow subcritical experimental device is as follows: when in use, open the flow regulating valve 261 and adjust the value of the digital flow meter 270 to zero, use the water pump 221 to transport the water inside the water storage tank 210 to the inside of the constant water tank 231 through the upper water pipe 222. Due to the setting of the overflow plate 232, the internal water level can be kept stable, and the flow stabilizing plate 233 can keep the water entering the experimental tube 260 stable. At this time, the water inside the constant water tank 231 flows into the experimental tube 260 and flows into the inside of the water storage tank 210 through the reflux funnel 282 and the reflux pipe 281. At this time, the storage tank 210 is turned on. The cell 120 acts on the steel needle 240 under the action of the conductive wire 121, so that the electrode of the conductive wire 121 is energized and connected to the steel needle 240, and the positive and negative electrodes respectively generate hydrogen ions and hydroxide ions. The acid-base indicator in the experimental color water makes the water inside the experimental tube 260 appear red, thereby replacing the experimental water. At the same time, the digital flow meter 270 is used to display the measurement data. In this way, the battery 120 is used instead of the color water, which avoids the steps of color water modulation, reduces water pollution, and does not need to frequently replace the water in the water tank. Moreover, the displayed lines are clearer, which is convenient for observation during the experiment and saves time and convenience.

[0027] It should be noted that the specific models and specifications of the battery 120 and the water pump 221 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 the field, so it will not be described in detail.

[0028] The power supply and principle of the battery 120 and the water pump 221 are clear to those skilled in the art and will not be described in detail here.

[0029] 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. An electrochemical display laminar flow subcritical experimental device, comprising a support structure (100) and an experimental structure (200) mounted on the support structure (100), characterized in that: The support structure (100) comprises a laboratory table (110), a storage battery (120) being arranged on one side of a top surface of the laboratory table (110), and a conductive wire (121) being connected to both the positive and negative terminals of the storage battery (120); The experimental structure (200) comprises a water storage tank (210), a buffer transition piece (230), an experimental tube (260) and a digital flow meter (270); the water storage tank (210) and the buffer transition piece (230) are connected via a circulation piece (220); a steel needle (240) is hung on the buffer transition piece (230); the conductive wire (121) is connected to the steel needle (240); one end of the experimental tube (260) is connected to the buffer transition piece (230); A flow regulating valve (261) is installed on the experimental tube (260), the experimental tube (260) is installed on the top surface of the experimental table (110), two steel pipes (264) are connected and fixed to the experimental tube (260), the two steel pipes (264) are connected to the sensor on the digital flow meter (270) through a hose (271), and the water storage tank (210) is connected to a reflux component (280), and the liquid inlet end of the reflux component (280) is located below the end of the experimental tube (260).

2. The electrochemical display laminar flow critical experimental device according to claim 1, characterized in that: A support plate (111) is fixed to the bottom of the laboratory table (110), the digital flow meter (270) is placed on the top surface of the support plate (111), and a vertical plate (112) is fixed below one end of the laboratory table (110).

3. The electrochemical display laminar flow subcritical experimental device according to claim 1, characterized in that: The circulating element (220) comprises a water pump (221) and a downpipe (223); the water pump (221) is installed inside the water storage tank (210); an uppipe (222) is installed at the water outlet end of the water pump (221); and one end of the downpipe (223) is in communication with the top surface of the water storage tank (210).

4. The electrochemical display laminar flow critical experimental device according to claim 3, characterized in that: The buffer transition piece (230) includes a constant water tank (231), the constant water tank (231) is fixed on the top surface of the experimental table (110), an overflow plate (232) and a flow stabilizing plate (233) are fixed inside the constant water tank (231), the upper water pipe (222) is connected to the constant water tank (231), and the connection point of the upper water pipe (222) is located between the overflow plate (232) and the flow stabilizing plate (233), the steel needle (240) is hung on the wall of the constant water tank (231) by a hook, and the end of the steel needle (240) is located in front of the axis of the experimental tube (260), and the other end of the lower water pipe (223) is connected to the constant water tank (231), and the connection point of the lower water pipe (223) is located on one side of the overflow plate (232).

5. The electrochemical display laminar flow critical experimental device according to claim 4, characterized in that: The surface of the flow stabilizing plate (233) is evenly distributed with through holes.

6. The electrochemical display laminar flow critical experimental device according to claim 2, characterized in that: A support (262) is provided at the bottom of one end of the experimental tube (260), and the support (262) is installed on the top surface of the experimental table (110). An elbow (263) is formed at the end of the experimental tube (260).

7. The electrochemical display laminar flow critical experimental device according to claim 6, characterized in that: The return member (280) comprises a return pipe (281) and a return funnel (282); one end of the return pipe (281) is in communication with the water storage tank (210); the other end of the return pipe (281) passes through the vertical plate (112) and extends to the outside; the return funnel (282) is fixed to the vertical plate (112) via a horizontal plate; the lower end of the return funnel (282) is in communication with the other end of the return pipe (281); and the return pipe (281) is located below the elbow (263).

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