Thermal water flow demonstration device

Abstract

The invention discloses a thermal water flow demonstration device, comprising a transparent cup body, a heating device, a heating controller and a base that are flexibly connected from top to bottom. The transparent cup body is filled with normal temperature tap water, a dye capsule is provided at the liquid filling and exhaust port at the bottom of the cup, a transparent hose is spirally wrapped and connected to the inner cavity of the cup body, and a color-changing temperature measuring sticker is provided on the transparent hose. The invention is mainly used to demonstrate the movement law and dynamics of water body when heated. When in use, the transparent cup body is in an inverted state with the bottom of the cup facing upward, and the water body is heated by an electric heating rod. Before and after heating, the running dynamics of the water body during the heating process, the changing level of water temperature and the thermal running direction can be observed and judged through the running track of the pigment liquid and the color changing order of the color-changing temperature measuring sticker on the transparent hose.

Description

Technical Field

[0001] The invention belongs to the technical field of fluid thermodynamics demonstration devices, and in particular relates to a dynamic demonstration device for demonstrating the operation of water in a container when it is heated. Background Art

[0002] When static water is heated, it expands and contracts due to heat, and the hot water keeps moving upward, so the water body moves and generates a certain amount of power. Under normal circumstances, it is difficult to directly observe the running state of water when it is heated. In teaching and practice, it is not conducive to correctly understanding the flow state and thermodynamic laws of water after heating. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a device which can visually display the running state of a water body when it is heated.

[0004] In order to solve the above technical problems, the present invention comprises a transparent cup body, a heating device, a heating controller and a base which are flexibly connected from top to bottom;

[0005] The bottom of the transparent cup body is provided with a liquid filling and exhaust port, the liquid filling and exhaust port is provided with a dye capsule movably connected thereto, the dye capsule is provided with a filling pipe extending into the cup body, the dye capsule is provided with a color indicator liquid, the end of the dye capsule is closely connected with the liquid filling and exhaust port, and the upper and lower ends of the side wall of the transparent cup body are respectively provided with a catheter interface; a spirally wrapped transparent hose is provided outside the transparent cup body, the two pipe openings of the transparent hose are respectively plugged with the upper and lower catheter interfaces of the cup body, the lumen of the transparent hose is communicated with the lumen of the transparent cup body, a color-changing temperature measuring sticker is provided on the outer surface of the transparent hose, and tap water is filled in the transparent cup body;

[0006] The heating device comprises an electric heating rod and a heating rod seat, the heating rod seat is movably connected to the transparent cup body, its outer edge is closely connected to the inner wall of the cup mouth, one end of the electric heating rod is tightly connected to the central part of the heating rod seat, and the rod body extends into the cup cavity of the transparent cup body;

[0007] The heating controller includes a temperature display unit, a temperature setting button, a heating switch, a power jack and a temperature sensing probe. The temperature sensing probe is located in the middle of the transparent cup body and extends into the cup cavity. The sensing probe is electrically connected to the heating controller sensing switch, and the electric heating rod is connected to the power supply of the heating controller.

[0008] The transparent hose is spirally distributed side by side between the upper and lower catheter interfaces of the transparent cup body, and a color-changing temperature measuring sticker is arranged on each layer of the ring.

[0009] A color-changing temperature measuring sticker is respectively arranged on two opposite sides of each ring of the transparent hose, wherein the color-changing temperature measuring sticker on one side is a low temperature display column, and the color-changing temperature measuring sticker on the other side is a high temperature display column.

[0010] A sealing rubber ring is arranged on the heating rod seat, and the heating rod seat is threadedly connected with the transparent cup body.

[0011] The upper end of the heating controller is plugged into the heating rod seat, and the lower end is plugged into the base.

[0012] The beneficial effects of the present invention are as follows: the present invention is provided with a transparent cup body, a heating device and a heating controller, the transparent cup body is filled with normal temperature tap water, the bottom of the cup is provided with a liquid filling and exhaust port, the liquid filling and exhaust port is provided with a dye capsule connected thereto, the transparent cup body is provided with a spirally wrapped transparent hose connected to the inner cavity of the cup body, a color-changing temperature measuring sticker is attached to the outside of the transparent hose, and the electric heating rod of the heating device extends into the cup body. It mainly heats the water in the cup body through the electric heating rod, and intuitively displays the law and dynamics of the water body being heated and moving through the running track of the pigment liquid and the color change sequence of the color-changing temperature measuring sticker. When in use, the transparent cup body is in an inverted state with the bottom of the cup facing upwards, and before heating, a water-soluble dye liquid with a temperature lower than normal temperature is injected into the bottom of the water body through the dye capsule, and then the water body is heated by the electric heating rod. During the heating process of the water body, the water temperature around the electric heating rod rises first and moves upwards, and the dye liquid at the bottom moves with the water body, so that the running state of the water body during the heating process can be intuitively displayed. Continue heating until the water temperature reaches the preset value. When the heating rod stops heating, the water circulation in the container is relatively weakened. During the heating process, the water in the cup enters the transparent hose from the top and flows in the hose. The flow of the pigment liquid can visually display the dynamics of the water circulation. At the same time, the color change of the color-changing temperature measuring sticker on the transparent hose can be used to observe the level of water temperature changes and the direction of thermal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a partial cross-sectional schematic diagram of the present invention;

[0016] Figure 3 It is a schematic diagram of assembling the components of the present invention;

[0017] Figure 4 This is a reference diagram used in the present invention. Specific embodiments

[0018] Reference Figures 1 to 3As shown, the thermal water flow demonstration device includes a transparent cup body 1, a heating device 3, a heating controller 4 and a base 5 that are movably connected from top to bottom. A transparent hose 2 that is connected to the inner cavity of the transparent cup body 1 is spirally wound around the outside, and the cup mouth of the transparent cup body 1 is closely connected to the heating rod seat 32 of the heating device 3, and the electric heating rod 31 extends into the cup body; the cup body is filled with tap water 6, and after the color indicator liquid 72 is injected into the water body through the dye capsule 7, the heating power supply of the heating controller 4 is turned on, and the heating temperature is set to heat the tap water 6 through the electric heating rod 31. When the water body moves during the heating process, the color indicator liquid gradually moves with the water body, thereby showing the running dynamics of the water in the cup body and the transparent hose 2 after being heated. At the same time, according to the order of color change of the color-changing temperature measuring sticker 21 on the transparent hose, the change level of water temperature and the direction of thermal operation can also be observed.

[0019] The transparent cup body 1 is a cylindrical plastic transparent cup body, and a filling and exhaust port 11 is provided on the bottom of the cup. When in use, the bottom of the transparent cup body 1 faces upward, and liquid can be added or excess air in the cup cavity can be discharged through the filling and exhaust port 11. A rubber dye capsule 7 is movably connected to the filling and exhaust port 11, and a capillary filling pipe 71 is plugged into the dye capsule 7. The filling pipe extends into the cup body and can reach the bottom of the water body; the dye capsule 7 is filled with a red indicator liquid 72, and the end of the dye capsule 7 is tightly plugged into the filling and exhaust port 11. A catheter interface 12 is respectively provided at the upper and lower ends of one side wall of the transparent cup body 1, and a spirally wrapped plastic transparent hose 2 is provided outside the transparent cup body 1. The two pipe openings of the transparent hose 2 are respectively plugged into the two catheter interfaces 12 of the cup body, and the tube cavity of the transparent hose 2 is communicated with the inner cavity of the transparent cup body 1. A color-changing temperature measuring sticker 21 is pasted on the outer surface of the transparent hose 2, and water that covers the two catheter interfaces 12 is provided in the transparent cup body 1.

[0020] The heating device 3 includes an electric heating rod 31 and a heating rod seat 32. The electric heating rod 31 adopts a 24V low-voltage and high-power heating tube, and its terminal is tightly and sealedly connected to the center of the heating rod seat 32. The electric heating rod 31 extends into the cup cavity of the transparent cup body 1, and its length in the cup body is equivalent to the distance between the upper and lower conduit interfaces 12 of the transparent cup body 1; the heating rod seat 32 has a circular outer edge connected to the inner wall of the cup mouth, the circular outer edge of the heating rod seat 32 is provided with an internal thread, and the cup mouth of the transparent cup body 1 is provided with an external thread, and the circular outer edge of the heating rod seat 32 is threadedly connected to the cup mouth of the transparent cup body 1; a sealing rubber ring 33 is provided on the heating rod seat 32, and after the heating rod seat 32 is connected to the cup body, it plays a sealing role, and water in the cup body will not seep out.

[0021] The heating controller 4 is a digital display temperature control device, which includes a temperature display unit 41, a temperature setting button 42, a heating switch 43, a power jack 44 and a waterproof temperature sensing probe 45. A connection hole is provided in the middle of the transparent cup body 1, and the temperature sensing probe 45 is inserted into the inner cavity of the transparent cup body 1 from the connection hole in the middle of the transparent cup body 1. The temperature sensing probe 45 is sealed and connected to the connection hole in the middle of the transparent cup body 1. The signal line plug 46 of the temperature sensing probe 45 is electrically connected to the temperature control switch of the heating controller 4, and the electric heating rod 31 is connected to the power supply of the heating controller 4.

[0022] The bottom surface of the heating rod seat 32 is provided with a plug-in slot 34, and the upper end of the heating controller 4 is plugged into the plug-in slot 34; the upper surface of the base 5 is provided with a seat opening 51, and the lower end of the heating controller 4 is plugged into the seat opening 51. When in use, the base 5 is placed on the table body to play a stabilizing role.

[0023] Reference Figure 1 and Figure 3 As shown, the transparent hose 2 of the present invention is spirally distributed side by side between the upper and lower conduit interfaces 12 of the transparent cup body 1. On one side of the cup body, a color-changing temperature measuring sticker 21 is respectively provided at the left and right ends of each layer of rings, wherein the color-changing temperature measuring sticker 21 on the left is a low-temperature display column 211, and the color-changing temperature measuring sticker 21 on the right is a high-temperature display column 212. The color-changing temperature measuring sticker 21 in the low-temperature display column 211 is pasted with an indicator sticker with the same initial temperature as the water in the cup body; the color-changing temperature measuring sticker 21 in the high-temperature display column 212 has a color-developing temperature that is 3-5 degrees Celsius higher than the normal temperature. Indicator stickers with different display temperatures are pasted on the transparent hose 2, and the indicator stickers change color successively before and after heating, which can indicate the temperature changes and operating dynamics of the water in the cup body before and after heating. Before heating, the water in the cup body and the conduit is consistent with the outside temperature and is at room temperature. At this time, the color-changing temperature measuring stickers 21 of each layer in the low-temperature display column 211 are all colored, and the color-changing temperature measuring stickers 21 in the high-temperature display column 212 are not colored, indicating that the water temperature is balanced and in a static state. After starting the heating device, the heating controller 4 sets the heating temperature to be higher than the color-changing temperature measuring stickers 21 in the high-temperature display column 212. During the heating process, as the temperature in the cup body rises, the water body not only moves in the cup body, but also enters the transparent hose 2, pushing the water to form a circulation in the conduit. The color-changing temperature measuring stickers 21 of the high-temperature display column 212 on each layer of the conduit will be colored layer by layer from top to bottom, which can intuitively display the temperature distribution and thermal dynamics of the water body after heating.

[0024] Reference Figure 4As shown, when the present invention is used, first add normal temperature tap water into the opened transparent cup body 1, and the height of the tap water in the cup body should be able to cover the two conduit interfaces 12. After the heating rod seat 32 is firmly connected to the transparent cup body 1, the electric plug 35 of the electric heating rod 31 and the sensor plug 46 of the temperature sensing probe 45 are respectively connected to the heating controller 4. The heating controller 4 adopts the XH-W3001 digital temperature controller. At the same time, the power socket 44 on the heating controller 4 is connected to the 24 volt power transformer 47. The integrated transparent cup body 1, the heating rod seat 32 and the heating controller 4 are vertically located on the base 5. Turn on the power of the heating controller 4, and the temperature display unit 41 displays the temperature of the water in the cup body at room temperature. Select a color-changing temperature measuring sticker 21 with the same temperature as the water in the cup body and apply it to the left end of each layer of transparent hose 2, and apply a color-changing temperature measuring sticker 21 with a color-changing temperature 5 degrees higher than room temperature to the right end of the transparent hose 2. After gently squeezing the dye capsule 7, part of the pigment liquid 72 is injected into the bottom of the water in the cup body from the liquid filling exhaust port 11. At this time, the state of the water body when it is not heated can be observed through the pigment liquid 72, and the low temperature display column 211 at the left end of the transparent hose 2 is colored, indicating that the water in the cup body is in a balanced temperature and static state when it is not heated. Adjust the setting button 42 to a color change temperature slightly higher than the color change temperature measuring sticker 21 in the high temperature display column 212, and the electric heating rod 31 starts to heat. As the water temperature in the cup continues to rise, it can be observed through the pigment liquid 72 that part of the water body begins to rise, and the pigment liquid runs with the water body, forming a certain running track in the cup body. At the same time, the water in the cup body enters the transparent hose 2 and circulates, and the temperature of the tube body is continuously circulated from top to bottom. The color change temperature measuring sticker 21 at the right end of the transparent hose 2 gradually changes color, and then intuitively displays the running state and thermal law of the water body when the water body is heated.

Claims

1. A thermal water flow demonstration device, characterized in that It comprises a transparent cup body (1), a heating device (3), a heating controller (4) and a base (5) which are flexibly connected from top to bottom; The bottom of the transparent cup body (1) is provided with a liquid filling and exhaust port (11), the liquid filling and exhaust port (11) is provided with a dye capsule (7) movably connected thereto, the dye capsule (7) is provided with a filling pipe (71) extending into the cup body, a color indicating liquid (72) is provided in the dye capsule (7), the end of the dye capsule (7) is closely connected to the liquid filling and exhaust port (11), and a catheter interface (12) is respectively provided at the upper and lower ends of the side wall of the transparent cup body (1); a spirally wound transparent hose (2) is provided outside the transparent cup body (1), the two pipe openings of the transparent hose (2) are respectively plugged into the upper and lower catheter interfaces (12) of the cup body, the lumen of the transparent hose (2) is communicated with the inner lumen of the transparent cup body (1), a color-changing temperature measuring sticker (21) is provided on the outer surface of the transparent hose (2), and tap water (6) is filled in the transparent cup body (1); The heating device (3) comprises an electric heating rod (31) and a heating rod seat (32), the heating rod seat (32) being movably connected to the transparent cup body (1), the outer edge of which is tightly connected to the inner wall of the cup mouth, one end of the electric heating rod (31) being tightly connected to the central part of the heating rod seat (32), and the rod body extending into the cup cavity of the transparent cup body (1); The heating controller (4) comprises a temperature display unit (41), a temperature setting button (42), a heating switch (43), a power socket (44) and a temperature sensing probe (45). The temperature sensing probe (45) is located in the middle of the transparent cup body (1) and extends into the water body. The sensing probe (45) is electrically connected to the temperature control switch of the heating controller (4). The electric heating rod (31) is connected to the power supply of the heating controller (4). The transparent hose (2) is spirally arranged side by side between the upper and lower catheter interfaces (12) of the transparent cup body (1), and a color-changing temperature measuring sticker (21) is provided on each layer of the ring; The heating rod seat (32) is provided with a sealing rubber ring (33), and the heating rod seat (32) is threadedly connected to the transparent cup body (1).

2. The thermal water flow demonstration device according to claim 1, characterized in that A color-changing temperature measuring sticker (21) is provided on opposite sides of each ring layer of the transparent hose (2), wherein the color-changing temperature measuring sticker (21) on one side is a low temperature display column (211), and the color-changing temperature measuring sticker (21) on the other side is a high temperature display column (212).

3. The thermal water flow demonstration device according to claim 1 or 2, characterized in that The upper end of the heating controller (4) is plugged into the heating rod seat (32), and the lower end is plugged into the base (5).

Images