An experimental device for heat transfer efficiency of fluid under different heat exchange paths

Abstract

The application provides an experimental device for heat transfer efficiency of fluid in different heat exchange paths, comprising an insulation box, a heating assembly arranged in the insulation box, a water pipe arranged on each of two sides of the insulation box for water inlet and outlet, a heat preservation pipe arranged in the water pipe, wherein the heat preservation pipe is telescopic in the water pipe, two ends of a pipeline are communicated with the two heat preservation pipes, a temperature sensor is arranged at the communication position of the pipeline and the heat preservation pipe, a support plate is a thin-walled plastic plate, and the support plate is horizontally arranged below the pipeline. By applying external force to the pipeline to deform the pipeline, the fluid flowing through the pipeline changes the conveying path correspondingly, the temperature difference measured by the temperature sensor is used to obtain the heat transfer efficiency in different paths, and the experimental method provides a theoretical basis for the influence of the fluid conveying path on the heat transfer efficiency.

Description

Technical Field

[0001] This invention relates to the field of convective heat transfer efficiency experiments, specifically to an experimental apparatus for measuring the heat transfer efficiency of fluids under different heat transfer paths. Background Technology

[0002] Measuring the convective heat transfer efficiency ensures that the heat exchange device operates under optimal conditions, thus providing a theoretical basis for the optimal heat exchange method under the premise of conforming to actual operating conditions.

[0003] Publication number CN203101302U provides a negative pressure heat transfer experimental device. This experimental device explores the influence of different variables on heat transfer efficiency by controlling variables, where the variables are flow velocity and flow rate.

[0004] In practice, the fluid is carried by pipes. Under a fixed flow rate and velocity, different pipe paths have different effects on the fluid. For example, different sizes of bends, the viscosity and flow state of the fluid inside the pipe, etc., all affect the heat exchange efficiency. However, the existing technology mentioned above does not address the impact of different heat exchange pipe paths on heat exchange efficiency. Therefore, the experimental data obtained from the experimental methods of this existing technology cannot provide theoretical support for the impact of different heat exchange paths on heat exchange efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an experimental apparatus for measuring the heat transfer efficiency of fluids under different heat transfer paths, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat transfer paths includes an insulated chamber, an internal heating assembly, and a water pipe on each of the two sides of the chamber for water inlet and outlet. The apparatus also includes:

[0008] Insulation pipe, wherein the water pipe is equipped with an insulation pipe, and the insulation pipe is capable of expanding and contracting within the water pipe;

[0009] The pipe has two ends connected to two insulated pipes. Changing the shape of the pipe will change the fluid transport path accordingly.

[0010] A temperature sensor is installed inside the pipe.

[0011] Preferably, the pipe is a malleable pipe, and the fluid flow path can be changed by changing the shape of the pipe through external force.

[0012] Preferably, the pipe is a flexible telescopic hose, and the experimental device further includes a support plate, which is a thin-walled plastic plate. The support plate is placed horizontally below the flexible telescopic hose. When the support plate is subjected to external force, it deforms, and the flexible telescopic pipe fits into the deformed support plate to change the path of the flexible telescopic pipe.

[0013] Preferably, the experimental apparatus further includes an auxiliary deformation component, which includes a rotary drive component, a telescopic part, a support frame, and rollers. The rotary drive component is disposed inside the insulation box, the telescopic part is disposed on the actuating component of the rotary drive component, and the support frame is disposed on the actuating component of the telescopic part. The two rollers are rotatably mounted on the support frame, with a gap between the two rollers. When the support plate is in a vertical state and enters the gap between the rollers, the swinging telescopic part can apply a bending force to the support plate. The rotary drive component is a rotary cylinder.

[0014] Preferably, the experimental apparatus further includes a positioning component for adjusting the position of the support plate. The actuating part of the positioning component is connected to the support plate and is used to drive the support plate to rotate and move vertically.

[0015] Preferably, the adjustment assembly includes a cylinder, a connecting frame, and a transmission assembly. The two cylinders are respectively disposed at both ends of the support plate, and the power output end of the cylinder is provided with a connecting frame. The connecting frame is rotatably connected to the end of the support plate. The transmission assembly acts on the support plate. When the support plate is raised or lowered, the transmission assembly converts the linear motion into the rotational motion of the support plate, thereby realizing the flipping of the support plate.

[0016] Preferably, the transmission assembly includes a friction wheel and a friction plate. The friction wheel is connected to the end of the support plate, while the friction plate is disposed inside the insulation box, and the friction wheel and the friction plate are in frictional contact.

[0017] Preferably, the rotary drive assembly is a rotary cylinder.

[0018] Preferably, the telescopic part includes an outer rod and a telescopic inner rod, the telescopic inner rod is movably installed inside the outer rod, and a limiting bolt is provided in the threaded hole on the outer rod, wherein the end of the limiting bolt contacts the telescopic inner rod.

[0019] Preferably, a water tank is provided on each side of the insulated box, and the ends of the two water pipes are respectively located inside the two water tanks, while the ends of the water pipes used for water inlet are equipped with water pumps.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention utilizes the deformation of a pipe under external force to alter the transport path of the fluid flowing through it. The temperature difference measured by a temperature sensor yields the heat transfer efficiency under different paths. Through experiments, this invention provides a theoretical basis for understanding the influence of fluid transport path on heat transfer efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0023] Figure 2 for Figure 1 A 3D schematic diagram of the front side of the insulated box in its concealed state;

[0024] Figure 3 This is a full sectional view of the overall structure in this invention;

[0025] Figure 4 This is a three-dimensional schematic diagram of the auxiliary deformation component in this invention;

[0026] Figure 5 for Figure 2 Schematic diagram of section A in the middle;

[0027] In the diagram: 1. Insulation box, 2. Water pipe, 3. Insulation pipe, 4. Pipe, 5. Temperature sensor, 6. Support plate, 7. Auxiliary deformation component, 8. Cylinder, 11. Heating component, 12. Water tank, 21. Water pump, 71. Telescopic part, 72. Support frame, 73. Roller, 74. Limit bolt, 75. Rotary cylinder, 711. Outer rod, 712. Telescopic inner rod, 81. Connecting frame, 82. Friction wheel, 83. Friction plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example:

[0030] Please see Figures 1 to 5 The present invention provides a technical solution:

[0031] An experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat transfer paths includes an insulated chamber 1, with a heating component 11 inside the chamber 1 for heating the interior of the chamber to maintain a constant temperature. A water pipe 2 is located on each of the two sides of the insulated chamber 1 for water inlet and outlet. The apparatus also includes:

[0032] Insulation pipe 3 is installed inside water pipe 2. The insulation pipe 3 can expand and contract inside water pipe 2. That is to say, the outer surface of insulation pipe 3 is in movable fit with the inner wall of water pipe 2, and a sealing ring is provided between the two to prevent fluid leakage.

[0033] Pipe 4, both ends of pipe 4 are connected to two insulated pipes 3; by changing the shape of pipe (4), the fluid transport path will be changed accordingly.

[0034] Temperature sensor 5 is installed inside pipe 4; preferably, temperature sensor 5 is installed at the connection between pipe 4 and insulation pipe 3, so that the fluid flowing into pipe 4 and the fluid flowing out of pipe 4 can be measured by setting two sets of temperature sensors 5, and the heat exchange situation can be obtained by the temperature difference between the two sets of temperature sensors 5; of course, the temperature sensor 5 is not limited to being set at the connection between pipe 4 and insulation pipe 3, but can also be distributed inside pipe 4, and its number can be adaptively selected according to the actual experimental conditions to record the temperature changes at different positions of pipe 4.

[0035] In a preferred embodiment, pipe 4 is a malleable pipe, and the fluid flow path is changed by altering the shape of pipe 4 through external force. The fluid flow path is then used as a variable in the experiment.

[0036] In a preferred embodiment, the pipe 4 is a flexible telescopic hose. The experimental apparatus also includes a support plate 6, which is a thin-walled, malleable plate. The support plate 6 is placed horizontally below the pipe 4. When the support plate 6 is subjected to external force, it deforms, and the pipe 4 comes into contact with the deformed support plate 6, thereby changing the path of the pipe 4. The deformation of the support plate 6 under external force can be achieved by the experimenter applying force to it, thereby deforming the support plate 6, or by using other tools that assist in deforming the support plate 6.

[0037] In a preferred embodiment, the support plate 6 is a thin-walled aluminum plate.

[0038] In a preferred embodiment, the experimental apparatus further includes an auxiliary deformation component 7, which comprises a rotary drive component, a telescopic part 71, a support frame 72, and rollers 73. The rotary drive component is disposed inside the insulation box 1, the telescopic part 71 is disposed on the actuating component of the rotary drive component, and the support frame 72 is disposed on the actuating component of the telescopic part 71. Two rollers 73 are rotatably mounted on the support frame 72, with a gap between the two rollers 73. When the support plate 6 is vertically positioned and enters the gap between the rollers 73, the swinging telescopic part 71 can apply a bending force to the support plate 6. This embodiment is equivalent to applying force to the support plate 6 with the aid of an auxiliary deformation tool, and this embodiment still requires the support plate 6 to be vertically placed between the two rollers 73.

[0039] In a preferred embodiment, the experimental apparatus further includes an adjustment component for adjusting the position of the support plate 6. The actuating part of the adjustment component is connected to the support plate 6 and is used to drive the support plate 6 to rotate and vertically lift. In other words, the solution disclosed in this embodiment solves the problem of manually placing the support plate 6 vertically between the two rollers 73 in the above embodiment and applying external force to deform the support plate 6 in a fully automatic manner.

[0040] In a preferred embodiment, the adjustment assembly includes cylinders 8, connecting frames 81, and a transmission assembly. Two cylinders 8 are respectively disposed at both ends of the support plate 6, and the power output end of each cylinder 8 is provided with a connecting frame 81, which is rotatably connected to the end of the support plate 6. The transmission assembly acts on the support plate 6; when the support plate 6 rises or falls, the transmission assembly converts linear motion into rotational motion, thereby achieving the flipping of the support plate 6. Of course, the method of driving the support plate 6 to flip is not limited to this; it can also be combined with a motor. For example, a motor can be installed at the end of the cylinder 8, and the power output end of the motor can be connected to the support plate 6. Those skilled in the art can adaptively select different driving methods according to actual needs.

[0041] In a preferred embodiment, the transmission assembly includes a friction wheel 82 and a friction plate 83. The friction wheel 82 is connected to the end of the support plate 6, while the friction plate 83 is disposed inside the insulation box 1. The friction wheel 82 and the friction plate 83 are in frictional contact. Therefore, when the support plate 6 is raised or lowered, the friction wheel 82 moves relative to the fixed friction plate 83, causing the friction wheel 82 to rotate the support plate 6. The transmission method disclosed in this embodiment is a friction transmission pair, but it is not limited to this; it can also be a gear and rack transmission pair.

[0042] In a preferred embodiment, the rotary drive assembly is a rotary cylinder 75. The telescopic part 71 is disposed on the power output end of the rotary cylinder 75.

[0043] In a preferred embodiment, the telescopic part 71 includes an outer rod 711 and a telescopic inner rod 712. The telescopic inner rod 712 is movably installed inside the outer rod 711, and a limiting bolt 74 is provided in a threaded hole on the outer rod 711. The end of the limiting bolt 74 contacts the telescopic inner rod 712, and the support frame 72 is connected to the telescopic inner rod 712, which serves as an actuating component. In this embodiment, the telescopic part 71 achieves extension and retraction by pushing and pulling the telescopic inner rod 712. Of course, a linear electric cylinder can also be used directly instead.

[0044] In a preferred embodiment, a water tank 12 is provided on each side of the insulated box 1. One water tank 12 is used for water storage when water is introduced, while the other water tank 12 is used for water storage in the reflux state. The ends of the two water pipes 2 are located inside the two water tanks 12 respectively, and a water pump 21 is provided at the end of the water pipe 2 used for water introduction.

[0045] Working principle:

[0046] 1) This invention utilizes a telescopic hose in experiments. An external force is applied to the support plate 6, causing it to deform. When the telescopic hose adheres to the deformed support plate 6, its shape changes, thus altering the convection path. To prevent the hose from failing to adhere to the deformed support plate 6, the insulation pipe 3 is pulled out from the water pipe 2 to accommodate the change in the hose's path. Water then enters the telescopic hose through one water pipe 2 and exits through the other, achieving a convection effect. Meanwhile, the heating component 1... 1. The insulation box 1 is heated to maintain a constant temperature inside. The water temperature entering the telescopic hose is lower than the temperature inside the insulation box 1. Temperature sensors 5 are installed at both the inlet and outlet of the telescopic hose. The temperature sensor 5 at the inlet end measures the water temperature before heat exchange, while the temperature at the outlet end measures the water temperature after heat exchange. The temperature difference between the two is the heat exchange efficiency. Multiple sets of experimental data are obtained by controlling variables, including the path of the telescopic hose. The optimal path for heat exchange efficiency is determined through multiple sets of experimental data.

[0047] Of course, this application also discloses two ways to apply force to the support plate 6. One is that the experimenter applies the force manually, and the other is to apply the force using mechanical parts. The application of force manually is a reasonable choice made by the experimenter according to actual needs, and the process will not be described in detail here. The force applied by the mechanical components is explained as follows: Cylinder 8 drives the support plate 6 to descend. During the descent of the support plate 6, the friction wheel 82 and the friction plate 83 undergo relative displacement, causing the friction wheel 82 to rotate. At this time, the rotating friction wheel 82 drives the support plate 6 connected to it to rotate synchronously. The support plate 6 rotates 90 degrees and then enters the gap between the two rollers 73. Then, the rotating cylinder 75 drives the telescopic part 71 to swing, causing the support plate 6 to deform. Finally, the deformed support plate 6 re-supports the telescopic hose. Then, the heat preservation pipe 3 is pulled so that the telescopic hose can fit against the deformed support plate 6, and the path of the telescopic hose changes accordingly. Since the change of the path of the telescopic hose is a variable in this experiment, the length of the telescopic part 71 is changed to achieve the effect of changing the deformation of the support plate 6, so that the deformation size of the support plate 6 is different each time.

[0048] 2) This invention utilizes a plastic pipe for experiments. By changing the shape of the plastic pipe through external force, the flow direction of the fluid is altered, and the heat transfer effect under different flow directions is recorded. The collection of experimental data and the verification of experimental results are based on the same principle as described above.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat exchange paths, comprising an insulated chamber (1), wherein a heating assembly (11) is provided inside the insulated chamber (1), and a water pipe (2) is provided on each of the two sides of the insulated chamber (1) for water inlet and outlet, characterized in that, Also includes: Insulation pipe (3), the water pipe (2) is provided with insulation pipe (3), wherein the insulation pipe (3) can extend and retract within the water pipe (2); Pipe (4), both ends of the pipe (4) are connected to two heat-insulating pipes (3), and the fluid transport path will be changed accordingly by changing the shape of the pipe (4); Temperature sensor (5) is provided inside the pipe (4).

2. The experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat transfer paths according to claim 1, characterized in that: The pipe (4) is a plastic pipe, and the fluid flow path can be changed by changing the shape of the pipe (4) by external force.

3. The experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat transfer paths according to claim 1, characterized in that: The pipe (4) is a flexible tube. The experimental device also includes a support plate (6), which is a thin-walled plastic plate. The support plate (6) is placed horizontally below the flexible tube. When the support plate (6) is subjected to external force, it deforms. The flexible tube fits with the deformed support plate (6) to change the path of the flexible tube.

4. The experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat transfer paths according to claim 3, characterized in that: The experimental apparatus also includes an auxiliary deformation component (7), which includes a rotary drive component, a telescopic part (71), a support frame (72), and rollers (73). The rotary drive component is installed inside the heat preservation box (1), the telescopic part (71) is installed on the actuator of the rotary drive component, and the support frame (72) is installed on the actuator of the telescopic part (71). The two rollers (73) are rotatably mounted on the support frame (72), and there is a gap between the two rollers (73). When the support plate (6) is in a vertical state and enters the gap between the rollers (73), the swinging telescopic part (71) can apply a bending force to the support plate (6). The rotary drive component is a rotary cylinder (75).

5. The experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat transfer paths according to claim 4, characterized in that: The experimental apparatus also includes a positioning component for adjusting the position of the support plate (6). The execution part of the positioning component is connected to the support plate (6) and is used to drive the support plate (6) to flip and vertically lift.

6. The experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat transfer paths according to claim 5, characterized in that: The adjustment assembly includes a cylinder (8), a connecting frame (81), and a transmission assembly. The two cylinders (8) are respectively located at both ends of the support plate (6), and the power output end of the cylinder (8) is provided with a connecting frame (81). The connecting frame (81) is rotatably connected to the end of the support plate (6). The transmission assembly acts on the support plate (6). When the support plate (6) is raised or lowered, the transmission assembly converts the linear motion into the rotational motion of the support plate (6), thereby realizing the flipping of the support plate (6).

7. The experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat transfer paths according to claim 6, characterized in that: The transmission assembly includes a friction wheel (82) and a friction plate (83). The friction wheel (82) is connected to the end of the support plate (6), while the friction plate (83) is disposed inside the heat preservation box (1). The friction wheel (82) and the friction plate (83) are in frictional contact.

8. The experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat transfer paths according to claim 4, characterized in that: The telescopic part (71) includes an outer rod (711) and a telescopic inner rod (712). The telescopic inner rod (712) is movably installed inside the outer rod (711), and a limiting bolt (74) is provided in the threaded hole on the outer rod (711), wherein the end of the limiting bolt (74) contacts the telescopic inner rod (712).

9. An experimental apparatus for measuring the heat transfer efficiency of a fluid under different heat transfer paths according to any one of claims 1-8, characterized in that: The insulated box (1) has a water tank (12) on each side, and the ends of the two water pipes (2) are located inside the two water tanks (12) respectively, while the end of the water pipe (2) used for water inlet is equipped with a water pump (21).

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