PCM material aging device

Abstract

The utility model discloses a PCM material aging device which comprises a test water tank, a test tube rack is fixedly connected in the test water tank, a water inlet and a water outlet are respectively arranged at the lower end of the left side and the lower end of the right side of the test water tank, and one end, far away from the test water tank, of the water inlet is communicated with a water inlet assembly; according to the utility model, the test water tank, the low-temperature water constant-temperature circulating water tank, the high-temperature water constant-temperature circulating water tank, the plurality of electromagnetic ball valves, the plurality of pipeline pumps and the temperature sensor are matched with one another and are connected through the first pipeline and the second pipeline to form a complete waterway circulation and temperature regulation and control system; according to the invention, accurate temperature control and efficient cyclic utilization of water in the test process are ensured, the long-time aging process can be efficiently simulated in a short time, the test efficiency and accuracy are remarkably improved, a powerful tool is provided for performance evaluation of the phase change material, and the method has outstanding innovativeness and practical value.

Description

Technical Field

[0001] This utility model belongs to the field of phase change material testing technology, specifically relating to a PCM material aging device. Background Technology

[0002] PCM (Phase Change Material) is a class of materials that can change between different physical states by absorbing or releasing heat.

[0003] With the widespread application of phase change materials (PCMs) in numerous fields such as building energy conservation, aerospace, and cold chain logistics, accurate assessment of their long-term performance stability is becoming increasingly crucial. Traditional aging testing methods are often time-consuming and struggle to accurately simulate the complex temperature changes encountered in actual use, failing to provide efficient support for the research and development and quality testing of PCMs, and severely hindering the rapid development of related industries. Therefore, this paper proposes to design a PCM material aging device to overcome these technical shortcomings. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a PCM material aging device to solve the above-mentioned technical problems.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a PCM material aging device, including a test water tank. A test tube rack is fixedly connected inside the test water tank. The lower left and lower right ends of the test water tank are respectively provided with an inlet and an outlet. The end of the inlet away from the test water tank is connected to an inlet component, and the end of the outlet away from the test water tank is connected to a return water component. The end of the inlet component away from the inlet is connected to a low-temperature constant-temperature circulating water tank and a high-temperature constant-temperature circulating water tank through a first pipe. The return water component is connected to the first pipe through a second pipe. A temperature sensor is fixedly installed on the right side inside the test water tank.

[0008] Preferably, water level baffles are fixedly connected to the inner walls of both sides of the test water tank at positions corresponding to the inlet and outlet, and a circulating water pump is fixedly installed on the right side of the inside of the test water tank at a position corresponding to the temperature sensor.

[0009] Furthermore, the height of both water level baffles is higher than that of the test tube rack, the cross-section of the water level baffles is U-shaped, and multiple water distribution holes are opened in the middle of the left water level baffle at a position corresponding to the water inlet, with the multiple water distribution holes distributed at equal intervals from top to bottom.

[0010] Furthermore, the water inlet assembly includes a first branch pipe and a second branch pipe. One end of the first branch pipe and one end of the second branch pipe are connected to the water inlet through a tee connector. The other end of the first branch pipe is connected to a low-temperature water pipeline pump through a first electrically controlled ball valve, and the other end of the second branch pipe is connected to a high-temperature water pipeline pump through a second electrically controlled ball valve.

[0011] Furthermore, the water return assembly includes two water return pipeline pumps, one of which has its inlet connected to its outlet, the other of which has its outlet connected to its inlet, and the third of which has its outlet connected to a second pipeline.

[0012] Furthermore, the first pipeline includes a first connecting pipe, a third connecting pipe, a low-temperature water outlet pipe, a low-temperature water return pipe, a high-temperature water return pipe, and a high-temperature water outlet pipe. One end of the low-temperature water outlet pipe and one end of the low-temperature water return pipe are both connected to the low-temperature water constant temperature circulation tank. The other end of the low-temperature water outlet pipe is connected to the other end of the low-temperature water return pipe. One end of the high-temperature water return pipe and one end of the high-temperature water outlet pipe are both connected to the high-temperature water constant temperature circulation tank. The other end of the high-temperature water return pipe is connected to the other end of the high-temperature water outlet pipe. One end of the first connecting pipe is connected to the end of the low-temperature water outlet pipe near the low-temperature water constant temperature circulation tank. The other end of the first connecting pipe is connected to the inlet end of the low-temperature water pipeline pump. One end of the third connecting pipe is connected to the end of the high-temperature water outlet pipe near the high-temperature water constant temperature circulation tank. The other end of the third connecting pipe is connected to the inlet end of the high-temperature water pipeline pump.

[0013] Furthermore, the second pipeline includes a third branch pipe, a fourth branch pipe, a second connecting pipe, and a fourth connecting pipe. One end of the third branch pipe and one end of the fourth branch pipe are connected to the outlet of another return water pipeline pump through a tee joint. The other end of the third branch pipe is connected to one end of the second connecting pipe through a third electrically controlled ball valve. The other end of the fourth branch pipe is connected to one end of the fourth connecting pipe through a fourth electrically controlled ball valve. The other end of the second connecting pipe is connected to the end of the low-temperature water return pipe away from the low-temperature water constant temperature circulation tank. The other end of the fourth connecting pipe is connected to the end of the high-temperature water return pipe away from the high-temperature water constant temperature circulation tank.

[0014] Furthermore, the flexible layer is made of silicone.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention utilizes a test water tank, a low-temperature constant-temperature circulating water bath, a high-temperature constant-temperature circulating water bath, multiple electromagnetic ball valves, multiple pipeline pumps, and temperature sensors in a coordinated manner. These components are connected via a first pipeline and a second pipeline to form a complete water circulation and temperature control system. This ensures precise temperature control and efficient water recycling during the testing process. It can efficiently simulate long-term aging processes in a short time, significantly improving testing efficiency and accuracy. It provides a powerful tool for the performance evaluation of phase change materials and has outstanding innovation and practical value. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view cross-sectional structural diagram of the test water tank in this utility model;

[0020] Figure 3 In this utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 In this utility model Figure 1 Enlarged structural diagram at point B.

[0022] The labels in the attached diagram are as follows: 1. Low-temperature water constant-temperature circulating water tank; 2. High-temperature water constant-temperature circulating water tank; 3. Test water tank; 301. Inlet; 302. Outlet; 303. Test tube rack; 304. Water level baffle; 305. Water distribution hole; 306. Circulating water pump; 307. Temperature sensor; 4. Low-temperature water outlet pipe; 5. Low-temperature water return pipe; 6. High-temperature water return pipe; 7. High-temperature water outlet pipe; 8. First connecting pipe; 9. Second connecting pipe; 10. Third connecting pipe; 11. Fourth connecting pipe; 12. First branch pipe; 13. Second branch pipe; 14. Low-temperature water pipeline pump; 15. High-temperature water pipeline pump; 16. First electrically controlled ball valve; 17. Second electrically controlled ball valve; 18. Third branch pipe; 19. Fourth branch pipe; 20. Third electrically controlled ball valve; 21. Fourth electrically controlled ball valve; 22. Return water pipeline pump. Detailed Implementation

[0023] This utility model specifically describes a PCM material aging device, the structural schematic of which is shown below. Figures 1-4As shown, the device includes a test water tank 3, with a test tube rack 303 fixedly connected inside. The lower left and lower right ends of the test water tank 3 are respectively provided with an inlet 301 and an outlet 302. The end of the inlet 301 away from the test water tank 3 is connected to an inlet component, and the end of the outlet 302 away from the test water tank 3 is connected to a return water component. The end of the inlet component away from the inlet 301 is connected to a low-temperature water constant temperature circulating water tank 1 and a high-temperature water constant temperature circulating water tank 2 through a first pipe. The return water component is connected to the first pipe through a second pipe. A temperature sensor 307 is fixedly installed on the right side inside the test water tank 3. The aging device is controlled by an external control system, and the test tube rack 303 is provided with multiple holes that are adapted to the direction of the test tubes.

[0024] Specifically, after loading the phase change material into a test tube and placing the test tube in the test tube rack 303, the device is set to automatic aging mode in the external control system. Without manual intervention, the device automatically performs cyclic aging of the phase change material. The external control system monitors the temperature in the test water tank 3 in real time according to the temperature sensor 307 and controls the opening and closing of the water inlet and outlet components. This allows the water in the low-temperature constant temperature circulating water tank 1 and the high-temperature constant temperature circulating water tank 2 to enter the test water tank 3 through the water inlet component as set. At the same time, the water in the test water tank 3 can flow back to the low-temperature constant temperature circulating water tank 1 and the high-temperature constant temperature circulating water tank 2 through the water return component.

[0025] In addition, water level baffles 304 are fixedly connected to the inner walls of both sides of the test water tank 3 at positions corresponding to the inlet 301 and outlet 302. A circulating water pump 306 is fixedly installed on the right side of the test water tank 3 at a position corresponding to the temperature sensor 307. The water level baffles 304 enable the water to flow evenly into the inlet 301. The circulating water pump 306 is electrically connected to the external control system, so that the circulating water pump 306 can agitate the water in the test water tank 3 to make the water temperature inside more uniform.

[0026] In addition, the height of both water level baffles 304 is higher than that of the test tube rack 303. The cross-section of the water level baffles 304 is U-shaped. Multiple water distribution holes 305 are opened in the middle of the left water level baffle 304 and at the position corresponding to the water inlet 301. The multiple water distribution holes 305 are distributed at equal intervals from top to bottom. Among them, the water level baffle 304 near the water outlet 302 can make the water in the test water tank 3 overflow from its upper end when it is discharged. This not only makes the drainage uniform, but also reduces the temperature difference of the water inside the test water tank 3. At the same time, the setting of the water distribution holes 305 can make the water enter the test water tank 3 evenly, avoiding a large temperature difference between the lower and upper ends of the test tube.

[0027] In addition, the water inlet assembly includes a first branch pipe 12 and a second branch pipe 13. One end of the first branch pipe 12 and one end of the second branch pipe 13 are connected to the water inlet 301 through a tee connector. The other end of the first branch pipe 12 is connected to a low-temperature water pipeline pump 14 through a first electrically controlled ball valve 16, and the other end of the second branch pipe 13 is connected to a high-temperature water pipeline pump 15 through a second electrically controlled ball valve 17. The first electrically controlled ball valve 16, the low-temperature water pipeline pump 14, the second electrically controlled ball valve 17, and the high-temperature water pipeline pump 15 are all electrically connected to an external control system. Based on the water temperature measured in real time by the temperature sensor 307, the external control system can control the first electrically controlled ball valve 16 and the low-temperature water pipeline pump 14, and the second electrically controlled ball valve 17 and the high-temperature water pipeline pump 15 to alternately open and close.

[0028] In addition, the water return assembly includes two water return pipeline pumps 22. The inlet of one water return pipeline pump 22 is connected to the outlet 302, the outlet of one water return pipeline pump 22 is connected to the inlet of the other water return pipeline pump 22, and the outlet of the other water return pipeline pump 22 is connected to the second pipeline. The water return pipeline pump 22 is electrically connected to an external control system, which controls the opening and closing of the water return pipeline pump 22 under the control of the external control system, thereby discharging and recycling the water inside the test water tank 3.

[0029] In addition, the first pipeline includes a first connecting pipe 8, a third connecting pipe 10, a low-temperature water outlet pipe 4, a low-temperature water return pipe 5, a high-temperature water return pipe 6, and a high-temperature water outlet pipe 7. One end of the low-temperature water outlet pipe 4 and one end of the low-temperature water return pipe 5 are connected to the low-temperature water constant temperature circulation tank 1, and the other end of the low-temperature water outlet pipe 4 is connected to the other end of the low-temperature water return pipe 5. One end of the high-temperature water return pipe 6 and one end of the high-temperature water outlet pipe 7 are both connected to the high-temperature water constant temperature circulation tank 2, and the other end of the high-temperature water return pipe 6 is connected to the other end of the high-temperature water outlet pipe 7. One end of the first connecting pipe 8 is connected to the low-temperature water outlet pipe 10. One end of pipe 4 is connected to the low-temperature water constant-temperature circulating water tank 1, and the other end of the first connecting pipe 8 is connected to the inlet of the low-temperature water pipeline pump 14. One end of the third connecting pipe 10 is connected to the end of the high-temperature water outlet pipe 7 near the high-temperature water constant-temperature circulating water tank 2, and the other end of the third connecting pipe 10 is connected to the inlet of the high-temperature water pipeline pump 15. When the material undergoes a phase change, the external control system automatically switches the working states of the first electrically controlled ball valve 16, the second electrically controlled ball valve 17, the low-temperature water pipeline pump 14, and the high-temperature water pipeline pump 15 based on temperature feedback, realizing the alternating cycle of heating and cooling processes. This cycle is performed at least 24 times a day to accelerate material aging. During each temperature alternation process...

[0030] In addition, the second pipeline includes a third branch pipe 18, a fourth branch pipe 19, a second connecting pipe 9, and a fourth connecting pipe 11. One end of the third branch pipe 18 and one end of the fourth branch pipe 19 are connected to the outlet of another return water pipeline pump 22 via a tee joint. The other end of the third branch pipe 18 is connected to one end of the second connecting pipe 9 via a third electrically controlled ball valve 20. The other end of the fourth branch pipe 19 is connected to one end of the fourth connecting pipe 11 via a fourth electrically controlled ball valve 21. The other end of the second connecting pipe 9 is connected to the end of the low-temperature water return pipe 5 away from the low-temperature water constant temperature circulating water tank 1. The other end of the fourth connecting pipe 11 is connected to... The end of the high-temperature water return pipe 6 away from the high-temperature water constant temperature circulation tank 2 is connected; the third electrically controlled ball valve 20 and the fourth electrically controlled ball valve 21 are electrically connected to the external control system, so that the return water component is connected to the first pipe through the second pipe. When the test water tank 3 switches between low-temperature water and high-temperature water, the external control system can control the return water pipe pump 22, the third electrically controlled ball valve 20 and the fourth electrically controlled ball valve 21 to cooperate in opening and closing, so that the water in the test water tank 3 will be automatically pumped into the low-temperature water constant temperature circulation tank 1 and the high-temperature water constant temperature circulation tank 2 for storage, and then pumped back to the test tank for the next circulation.

[0031] Working principle: A test tube containing PCM material is placed in the test tube rack 303 inside the test water tank 3. The device is set to automatic aging mode in the external control system. Without manual intervention, the device automatically performs cyclic aging of the phase change material. During the automatic aging process, when the water temperature reaches the preset high temperature, the system will automatically close the second electrically controlled ball valve 17, the high temperature water pipeline pump 15, the return water pipeline pump 22, and the fourth electrically controlled ball valve 21, so that the device stops the high temperature water circulation. At the same time, the first electrically controlled ball valve 16, the low temperature water pipeline pump 14, the return water pipeline pump 22, and the third electrically controlled ball valve 20 are opened, so that the device is in the low temperature water circulation working state.

[0032] When the water temperature falls below the preset low-temperature water temperature, the system automatically closes the first electrically controlled ball valve 16, the low-temperature water pipeline pump 14, the return water pipeline pump 22, and the third electrically controlled ball valve 20, stopping the low-temperature water circulation. Simultaneously, it opens the second electrically controlled ball valve 17, the high-temperature water pipeline pump 15, the return water pipeline pump 22, and the fourth electrically controlled ball valve 21, putting the device into high-temperature water circulation mode. This cycle repeats continuously to achieve automatic aging. The external control system automatically records each action in a log for easy statistics and retrieval.

[0033] All technical features in this embodiment can be freely combined according to actual needs.

[0034] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A PCM material aging device, characterized in that, The test water tank (3) includes a test tube rack (303) fixedly connected inside. The lower left and lower right ends of the test water tank (3) are respectively provided with an inlet (301) and an outlet (302). The end of the inlet (301) furthest from the test water tank (3) is connected to an inlet assembly. The end of the outlet (302) furthest from the test water tank (3) is connected to a return water assembly. The end of the inlet assembly furthest from the inlet (301) is connected via a first pipe to a low-temperature constant-temperature circulating water tank (1) and a high-temperature constant-temperature circulating water tank (2). The return water assembly is connected to the first pipe via a second pipe. A temperature sensor (307) is fixedly installed on the right side of the interior; the first pipeline includes a first connecting pipe (8), a third connecting pipe (10), a low-temperature water outlet pipe (4), a low-temperature water return pipe (5), a high-temperature water return pipe (6), and a high-temperature water outlet pipe (7). One end of the low-temperature water outlet pipe (4) and one end of the low-temperature water return pipe (5) are connected to the low-temperature water constant temperature circulation tank (1). The other end of the low-temperature water outlet pipe (4) is connected to the other end of the low-temperature water return pipe (5). One end of the high-temperature water return pipe (6) and one end of the high-temperature water outlet pipe (7) are connected to the high-temperature water constant temperature circulation tank (2). The high-temperature water return pipe (6) has... The other end is connected to the other end of the high-temperature water outlet pipe (7). One end of the first connecting pipe (8) is connected to the end of the low-temperature water outlet pipe (4) near the low-temperature water constant temperature circulating water tank (1). The other end of the first connecting pipe (8) is connected to the inlet end of the low-temperature water pipeline pump (14). One end of the third connecting pipe (10) is connected to the end of the high-temperature water outlet pipe (7) near the high-temperature water constant temperature circulating water tank (2). The other end of the third connecting pipe (10) is connected to the inlet end of the high-temperature water pipeline pump (15). The second pipeline includes a third branch pipe (18), a fourth branch pipe (19), a second connecting pipe (9), and a fourth connecting pipe (11). One end of the third branch pipe (18) and one end of the fourth branch pipe (19) are connected to the outlet of another return water pipeline pump (22) through a three-way connector. The other end of the third branch pipe (18) is connected to one end of the second connecting pipe (9) through the third electric ball valve (20). The other end of the fourth branch pipe (19) is connected to one end of the fourth connecting pipe (11) through the fourth electric ball valve (21). The other end of the second connecting pipe (9) is connected to the end of the low-temperature water return pipe (5) away from the low-temperature water constant temperature circulating water tank (1). The other end of the fourth connecting pipe (11) is connected to the end of the high-temperature water return pipe (6) away from the high-temperature water constant temperature circulating water tank (2).

2. The PCM material aging device according to claim 1, characterized in that: Water level baffles (304) are fixedly connected to the inner walls of both sides of the test water tank (3) at positions corresponding to the inlet (301) and outlet (302). A circulating water pump (306) is fixedly installed on the right side of the inside of the test water tank (3) at a position corresponding to the temperature sensor (307).

3. The PCM material aging device according to claim 2, characterized in that: The height of both water level baffles (304) is higher than that of the test tube rack (303). The cross-section of the water level baffles (304) is U-shaped. Multiple water distribution holes (305) are opened in the middle of the water level baffle (304) on the left side, corresponding to the position of the water inlet (301). The multiple water distribution holes (305) are distributed at equal intervals from top to bottom.

4. The PCM material aging device according to claim 1, characterized in that: The water inlet assembly includes a first branch pipe (12) and a second branch pipe (13). One end of the first branch pipe (12) and one end of the second branch pipe (13) are connected to the water inlet (301) through a tee connector. The other end of the first branch pipe (12) is connected to a low-temperature water pipeline pump (14) through a first electrically controlled ball valve (16). The other end of the second branch pipe (13) is connected to a high-temperature water pipeline pump (15) through a second electrically controlled ball valve (17).

5. The PCM material aging device according to claim 1, characterized in that: The water return assembly includes two water return pipeline pumps (22), one of which has its inlet end connected to the outlet (302), the other of which has its outlet end connected to the inlet end of the other water return pipeline pump (22), and the other of which has its outlet end connected to a second pipeline.

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