PCM application engineering parameter test experimental device

Abstract

The utility model discloses a PCM application engineering parameter test experimental device which comprises a host, a water temperature control mechanism is arranged in the host, the water temperature control mechanism comprises a circulating water pool and two PCM cold storage water tanks, a plurality of ice plates are assembled in the PCM cold storage water tanks, and spoilers are assembled in inner cavities of the PCM cold storage water tanks. The side wall of the circulating water pool is fixedly connected with a water outlet pipe and a water inlet pipe, the other end of the water inlet pipe is fixedly connected with a three-way pipe, a butt joint pipe is fixedly connected between the second end of the three-way pipe and one PCM cold storage water tank, and a flow guide pipe is connected between the two PCM cold storage water tanks. According to the utility model, the water quality cleanliness is increased, the PCM can be more fully contacted with water, the heat transfer is smoother, the water temperature can be more quickly reduced or increased, and the PCM detection reliability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of PCM application engineering technology, specifically relating to a PCM application engineering parameter testing experimental device. Background Technology

[0002] In PCM application engineering parameter testing, by testing parameters such as sampling frequency and quantization bits, we can understand the effect of PCM on the digital conversion of analog signals, ensure that the information of analog signals can be accurately converted into digital signals with high efficiency during the encoding process, reduce information loss, and make the restored signal have a high similarity to the original signal.

[0003] Determining the temperature range at which phase change materials (PCMs) undergo phase transition using PCM parameter testing is crucial for their suitability in specific applications. For example, PCMs used for building energy conservation need to have a phase transition temperature close to the indoor comfort temperature to effectively utilize their energy storage characteristics to regulate indoor temperature. Measuring the heat absorbed or released by the PCM during the phase transition process indicates that the greater the latent heat of phase transition, the stronger the material's energy storage capacity, enabling it to store or release more heat during the phase transition and thus better fulfill its role in thermal energy storage and temperature regulation.

[0004] With the development of modern engineering technology, phase change material (PCM) cold storage devices have received widespread attention and application in many fields, such as central air conditioning systems and industrial cooling processes. However, there is currently a lack of a dedicated experimental device that can accurately simulate actual working conditions and effectively test various key parameters of PCM cold storage devices. This makes it difficult to accurately obtain the optimal size, structure, performance parameters, and compatibility data of PCM cold storage devices with actual engineering applications during engineering design and implementation. This seriously hinders the efficient promotion and engineering application of this technology and fails to meet the urgent needs of current engineering practice for energy conservation, emission reduction, and precise design.

[0005] Furthermore, in current experimental setups, during temperature control and experimentation of the water flow, a small amount of impurities may be introduced into the PCM material during storage or installation. For example, the raw material itself may have low purity, containing small amounts of metal fragments, dust, or other chemical impurities. These impurities may gradually separate out during the phase change process of the PCM in the cold storage tank, suspending in the water or adhering to the tank wall. This can cause impurities to interfere with the heat transfer between the PCM and the water, forming an insulating layer that hinders heat conduction. Moreover, when impurities are unevenly distributed within the tank, they may cause abnormal heat exchange in localized areas.

[0006] Therefore, an experimental device for testing engineering parameters of PCM applications is designed to overcome the above-mentioned technical defects. Utility Model Content

[0007] (1) Technical problems to be solved

[0008] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a PCM application engineering parameter testing experimental device, which aims to solve the problems in the background technology.

[0009] (2) Technical solution

[0010] To solve the above-mentioned technical problems, this utility model provides a PCM application engineering parameter testing experimental device, including a host, the host having a water temperature control mechanism inside, the water temperature control mechanism including a circulating water tank and two PCM cold water storage tanks, each of the PCM cold water storage tanks being equipped with several ice plates, and the inner cavity of the PCM cold water storage tanks being equipped with baffles.

[0011] The circulating water tank is fixedly connected to an outlet pipe and an inlet pipe on its sidewalls. A tee pipe is fixedly connected to the other end of the inlet pipe. A connecting pipe is fixedly connected between the second end of the tee pipe and one of the PCM cold water storage tanks. A guide pipe is connected between the two PCM cold water storage tanks. A diversion pipe is fixedly connected between the third end of the tee pipe and the guide pipe. An annular plate is fixedly connected to the inner wall of the inlet pipe. A filter assembly is installed inside the inlet pipe. A diversion assembly is installed between the other PCM cold water storage tank and the outlet pipe.

[0012] As a further step, the diversion assembly includes a circulation pump fixedly connected to the other end of the outlet pipe, and a connecting pipe fixedly connected between the other end of the circulation pump and another PCM cold water storage tank. A first flow meter is installed on the side wall of the connecting pipe, and thermometers are installed on the side walls of the connecting pipe and the inlet pipe, respectively. Gate valves are installed on the side walls of the connecting pipe, the diversion pipe, the connecting pipe, and the branch pipe.

[0013] As a further step, the filter assembly includes a mounting cylinder fixedly connected to the side wall of the water inlet pipe, a sealing cover plate being fitted to the end face of the mounting cylinder, a filter cylinder being disposed inside the water inlet pipe, the top of the filter cylinder being open, an end cap being fitted to the top of the filter cylinder, a plurality of oblique holes being opened on the side wall of the filter cylinder on the side of the water inlet end, a plurality of filter holes being opened on the side wall of the filter cylinder at the positions of the oblique holes, the diameter of the filter holes being smaller than the diameter of the oblique holes, and an anti-clogging component being disposed inside the filter cylinder.

[0014] As a further step, the anti-clogging component includes a rotating shaft rotatably connected to the inner wall of the filter cylinder, at least four scrapers are uniformly fixedly connected to the side wall of the rotating shaft, and an elastic scraping component is provided on the end face of the scraper near the inner wall of the filter cylinder. The top end of the rotating shaft passes through the end cap and is fixedly connected to a rotating rod.

[0015] As a further step, the elastic scraping assembly includes a groove formed on the end face of the scraper, and a rubber plate is provided in each groove. Multiple springs are fixedly connected between the rubber plate and the side wall of the groove, and the end face of the rubber plate abuts against the inner wall of the filter cylinder.

[0016] As a further step, a second flow meter is installed on the side wall of the water inlet pipe on both sides of the mounting cylinder.

[0017] As a further step, the end cap sidewall is fixedly connected to a plurality of mating plates, and the sidewall of the mating plates is movably connected to bolts, which are threadedly connected to the end face of the filter cartridge.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This invention, through the design of a cold water storage tank, a circulating water pool, an inlet pipe, and a filter assembly, can separate and filter impurities and floating matter in the water during the water temperature control process, increasing water cleanliness. This allows the PCM to have more complete contact with the water, resulting in smoother heat transfer and faster temperature decrease or increase, thereby improving the response speed and accuracy of water temperature control. In addition, by filtering impurities, abnormal local heat exchange can be avoided, making the water temperature more uniform throughout the circulating water pool, which is conducive to achieving precise water temperature control and improving the reliability of PCM detection. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the water flow temperature control of this utility model;

[0022] Figure 2 This utility model Figure 1 Sectional view at point AA;

[0023] Figure 3 This is a schematic diagram of the structure of the spoiler of this utility model;

[0024] Figure 4 This is a perspective view of the experimental apparatus of this utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of the water inlet pipe of this utility model;

[0026] Figure 6 This is a cross-sectional side view of the water inlet pipe of this utility model;

[0027] Figure 7 This is a top cross-sectional view of the water inlet pipe of this utility model;

[0028] Figure 8 This is a three-dimensional structural diagram of the filter cartridge of this utility model;

[0029] Figure 9 This utility model Figure 7 Enlarged view of point A in the image.

[0030] The labels in the attached diagram are as follows: 1. Main unit; 2. PCM cold water storage tank; 3. Baffle plate; 4. Ice plate; 5. Diverter pipe; 6. Guide pipe; 7. Gate valve; 8. Circulating water tank; 9. Circulating pump; 10. First flow meter; 11. Thermometer; 12. Connecting pipe; 13. Connecting plate; 14. Inlet pipe; 15. Mounting cylinder; 16. Sealing cover plate; 17. Filter cylinder; 18. End cap; 19. Slanted hole; 20. Filter hole; 21. Rotating shaft; 22. Scraper; 23. Spring; 24. Rubber plate; 25. Rotating rod; 26. Second flow meter; 27. Outlet pipe; 28. Connecting pipe; 29. ​​T-joint. Detailed Implementation

[0031] This specific embodiment is a PCM application engineering parameter testing experimental device, and its structural schematic diagram is shown below. Figures 1-9 As shown, the system includes a main unit 1, which contains a water temperature control mechanism. The water temperature control mechanism includes a circulating water tank 8 and two PCM cold storage water tanks 2. Each PCM cold storage water tank 2 is equipped with several ice plates 4, and the inner cavity of the PCM cold storage water tank 2 is equipped with a baffle 3. The main unit 1 serves as a linkage system that supports other facilities and is used for data acquisition, temperature control, real-time detection, and other functions during the experiment. This is existing technology and will not be described in detail in this solution.

[0032] Before conducting the experiment, the researchers thoroughly analyzed the actual engineering application scenario to determine key parameters such as the required simulated water flow range, temperature conditions, and expected cold storage performance indicators of the phase change material. Based on these parameters, initial experimental conditions were set on the control panels of the intelligent flow control system and the refrigeration equipment, and the entire experimental setup was started. During the experiment, the researchers closely monitored the real-time data displayed by the data acquisition and processing unit, including the water temperature change curve, flow fluctuations, and thermal performance parameters of the phase change material. When the difference between the inlet and outlet water temperatures deviated from the preset standard temperature difference, the intelligent flow control system automatically fine-tuned the opening of the flow regulating valve through the automatic feedback adjustment function of the data acquisition and processing unit, while the refrigeration equipment also adjusted its refrigeration power accordingly until the water temperature difference stabilized within the standard range.

[0033] Phase change materials (PCMs) are materials that undergo a phase transition with temperature changes, absorbing or releasing a large amount of latent heat during the transition. PCMs typically undergo phase transitions within a certain temperature range, such as changing from a solid to a liquid or vice versa. During this process, the material absorbs or releases a significant amount of heat, while its own temperature remains essentially constant until the phase transition is complete. This allows for the storage and release of heat, thus regulating the temperature.

[0034] The circulating water tank 8 is fixedly connected to an outlet pipe 27 and an inlet pipe 14 on its side walls. The other end of the inlet pipe 14 is fixedly connected to a tee pipe 29. The second end of the tee pipe 29 is fixedly connected to a connecting pipe 12 between one of the PCM cold water storage tanks 2. A guide pipe 6 is connected between the two PCM cold water storage tanks 2. A diversion pipe 5 is fixedly connected between the third end of the tee pipe 29 and the guide pipe 6. An annular plate is fixedly connected to the inner wall of the inlet pipe 14. A filter assembly is installed inside the inlet pipe 14. A diversion assembly is installed between the other PCM cold water storage tank 2 and the outlet pipe 27.

[0035] like Figure 1 As shown, the diversion assembly includes a circulation pump 9 fixedly connected to the other end of the outlet pipe 27. The other end of the circulation pump 9 is fixedly connected to another PCM cold water storage tank 2 by a connecting pipe 28. A first flow meter 10 is installed on the side wall of the connecting pipe 28. A thermometer 11 is installed on the side wall of both the connecting pipe 28 and the inlet pipe 14. Gate valves 7 are installed on the side walls of the connecting pipe 12, the guide pipe 6, the connecting pipe 28, and the diversion pipe 5.

[0036] like Figure 6 and Figure 8 As shown, the filter assembly includes a mounting cylinder 15 fixedly connected to the side wall of the water inlet pipe 14. A sealing cover plate 16 is fitted on the end face of the mounting cylinder 15. A filter cylinder 17 is provided inside the water inlet pipe 14. The top of the filter cylinder 17 is open. An end cap 18 is fitted on the top of the filter cylinder 17. Several oblique holes 19 are opened on the side wall of the filter cylinder 17 on the side of the water inlet end. Several filter holes 20 are opened on the side wall of the filter cylinder 17 at the positions of the oblique holes 19. The diameter of the filter holes 20 is smaller than the diameter of the oblique holes 19. An anti-clogging component is provided inside the filter cylinder 17.

[0037] Specifically, the filter cartridge 17 can be made of metal or a hollow cotton filter element, which has good water permeability and allows water to flow through quickly, thus filtering impurities in the water and increasing water cleanliness.

[0038] like Figure 7 As shown, the anti-clogging component includes a rotating shaft 21 rotatably connected to the inner wall of the filter cylinder 17. At least four scrapers 22 are evenly fixedly connected to the side wall of the rotating shaft 21. An elastic scraping component is provided on the end face of the scraper 22 near the inner wall of the filter cylinder 17. The top end of the rotating shaft 21 passes through the end cap 18 and is fixedly connected to a rotating rod 25.

[0039] Among them, according to Figure 7The direction of the arrow indicates the flow direction of water entering the filter cylinder 17. When the water enters the filter cylinder 17 in the direction of the inclined hole 19, the oblique water flow impact can drive the scraper 22 to rotate. The scraper 22 can scrape off the impurities adhering to the inclined hole 19 or the filter hole 20, and guide and transport the water flow so that the water can be discharged through the filter hole 20, while the impurities remain in the filter cylinder 17, thereby achieving the filtering effect.

[0040] In addition, the sealing cover 16 and the mounting cylinder 15 are connected by bolts. When the filter cylinder 17 needs to be removed for cleaning, the filter cylinder 17 can be removed by opening the sealing cover 16 and holding the rotating rod 25, thereby effectively improving the convenience of subsequent use.

[0041] Furthermore, the filter cartridge 17 and the mounting cartridge 15 are connected by a locking block and slot connection to limit the movement of the filter cartridge 17 and prevent it from rotating when impacted by water flow, thus affecting normal filtration.

[0042] like Figure 9 As shown, the elastic scraping assembly includes a groove formed on the end face of the scraper 22, and a rubber plate 24 is provided in each groove. Multiple springs 23 are fixedly connected between the rubber plate 24 and the side wall of the groove. The end face of the rubber plate 24 abuts against the inner wall of the filter cylinder 17. The force of the springs 23 can drive the rubber plate 24 to fit tightly against the inner wall of the filter cylinder 17, which is used to remove impurities adhering to the inner wall of the filter cylinder 17, so that the impurities can flow with the water flow inside the filter cylinder 17 and avoid clogging the filter holes 20.

[0043] like Figure 6 As shown, second flow meters 26 are installed on the side walls of the inlet pipe 14 on both sides of the mounting cylinder 15. The second flow meters 26 can be used to monitor the water flow on both sides of the inlet pipe 14, thereby determining whether the filter cylinder 17 needs to be cleaned or replaced.

[0044] like Figure 8 As shown, multiple mating plates 13 are fixedly connected to the side wall of the end cap 18, and bolts are movably connected to the side wall of the mating plates 13. The bolts are threadedly connected to the end face of the filter cylinder 17. When it is necessary to clean the filter cylinder 17, after removing it, unscrewing the bolts and removing the end cap 18, the impurities inside the filter cylinder 17 can be poured out and rinsed.

[0045] Working principle: The circulating water tank 8 is pre-stored with water. When the equipment is running, the circulating pump 9 draws water from the circulating water tank 8 and enters another PCM cold water storage tank 2 through the connecting pipe 28. The two PCM cold water storage tanks 2 are connected by the guide pipe 6 to transport the water. In one of the PCM cold water storage tanks 2, the water is then transported to the inlet pipe 14 through the connecting pipe 12. The inlet pipe 14 needs to filter the water before it is transported into the circulating water tank 8. Then, the water flows into the PCM cold water storage tank 2 through the circulating water tank 8, the connecting pipe 12, and the outlet pipe 27. In this process, the two PCM cold water storage tanks 2 can cool the water sequentially, or the water can be cooled by the other two PCM cold water storage tanks 2 and then returned to the circulating water tank 8 through the diversion pipe 5 and the inlet pipe 14. When water flows into the inlet pipe 14, it enters the filter cylinder 17 through the inclined hole 19. The pressure and impact of the water flow drive the scraper 22 to rotate around the shaft 21, guiding the water flow towards the filter hole 20. By utilizing the diameter difference between the inclined hole 19 and the filter hole 20, impurities such as flocculent matter, impurities, and pipe rust in the water flow can be blocked in the filter cylinder 17, thus filtering the water quality. This can prevent abnormal local heat exchange and make the water temperature more even throughout the circulating water tank 8, which is conducive to achieving precise water temperature control.

[0046] All technical features in this embodiment can be freely combined according to actual needs.

[0047] 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 application engineering parameter testing experimental device, comprising a host (1), wherein the host (1) is provided with a water temperature control mechanism, characterized in that: The water temperature control mechanism includes a circulating water tank (8) and two PCM cold water storage tanks (2). Each PCM cold water storage tank (2) is equipped with several ice plates (4), and the inner cavity of the PCM cold water storage tank (2) is equipped with a baffle plate (3). The side wall of the circulating water tank (8) is fixedly connected to an outlet pipe (27) and an inlet pipe (14). The other end of the inlet pipe (14) is fixedly connected to a three-way pipe (29). The second end of the three-way pipe (29) is fixedly connected to one of the PCM cold water storage tanks (2) with a connecting pipe (12). The two PCM cold water storage tanks (2) are connected to a guide pipe (6). The third end of the three-way pipe (29) is fixedly connected to the guide pipe (6) with a diversion pipe (5). The inner wall of the inlet pipe (14) is fixedly connected to an annular plate. A filter assembly is installed in the inlet pipe (14). A diversion assembly is installed between the other PCM cold water storage tank (2) and the outlet pipe (27).

2. The PCM application engineering parameter testing experimental device according to claim 1, characterized in that: The diversion assembly includes a circulation pump (9) fixedly connected to the other end of the outlet pipe (27). The other end of the circulation pump (9) is fixedly connected to another PCM cold water storage tank (2) by a connecting pipe (28). A first flow meter (10) is installed on the side wall of the connecting pipe (28). A thermometer (11) is installed on the side wall of both the connecting pipe (28) and the inlet pipe (14). A gate valve (7) is installed on the side wall of the connecting pipe (12), the guide pipe (6), the connecting pipe (28), and the diversion pipe (5).

3. The PCM application engineering parameter testing experimental device according to claim 1, characterized in that: The filter assembly includes an installation cylinder (15) fixedly connected to the side wall of the water inlet pipe (14). The end face of the installation cylinder (15) is fitted with a sealing cover plate (16). The inner cavity of the water inlet pipe (14) is provided with a filter cylinder (17). The top of the filter cylinder (17) is open. The top of the filter cylinder (17) is fitted with an end cap (18). The side wall of the filter cylinder (17) is provided with several oblique holes (19) on the side of the water inlet end. The side wall of the filter cylinder (17) is provided with several filter holes (20) at the position of the oblique holes (19). The diameter of the filter holes (20) is smaller than the diameter of the oblique holes (19). The inner cavity of the filter cylinder (17) is provided with an anti-clogging component.

4. The PCM application engineering parameter testing experimental device according to claim 3, characterized in that: The anti-clogging component includes a rotating shaft (21) rotatably connected to the inner wall of the filter cylinder (17). At least four scrapers (22) are evenly fixedly connected to the side wall of the rotating shaft (21). An elastic scraping component is provided on the end face of the scraper (22) near the inner wall of the filter cylinder (17). The top end of the rotating shaft (21) passes through the end cap (18) and is fixedly connected to a rotating rod (25).

5. The PCM application engineering parameter testing experimental device according to claim 4, characterized in that: The elastic scraping assembly includes a groove on the end face of the scraper (22), and a rubber plate (24) is provided in each groove. Multiple springs (23) are fixedly connected between the rubber plate (24) and the side wall of the groove. The end face of the rubber plate (24) abuts against the inner wall of the filter cylinder (17).

6. The PCM application engineering parameter testing experimental device according to claim 3, characterized in that: The inlet pipe (14) has a second flow meter (26) installed on both sides of the mounting cylinder (15).

7. The PCM application engineering parameter testing experimental device according to claim 3, characterized in that: The end cap (18) has multiple mating plates (13) fixedly connected to its side wall. The mating plates (13) have bolts movably connected to their side walls. The bolts are threaded to the end face of the filter cylinder (17).

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