A regenerative vacuum phase-change boiler

Abstract

The utility model belongs to vacuum phase change boiler technical field, concretely relates to a heat accumulation type vacuum phase change boiler, including boiler main part, be provided with the heat exchange tube on the boiler main part, the one end of heat exchange tube is provided with water supply pipe, the one end of heat exchange tube is connected with water supply pipe through filter mechanism, filter mechanism includes the round pipe, both ends of round pipe all are installed with the connecting pipe, two connecting pipes are connected with heat exchange tube and water supply pipe respectively, and two sleeve tubes are set up on the round pipe and are sleeved. The utility model, through the double filtration of activated carbon filter board and precision filter board, can effectively remove the impurities such as organic matter, small particle, suspended matter in the medium of water supply pipe input, significantly improve the water quality of boiler main part, reduce the deposition of impurities in the inner wall of heat exchange tube and the surface of phase change medium, heat storage material inside boiler main part, thereby reduce the risk of boiler incrustation, corrosion, prolong the service life of boiler main part, heat exchange tube and other core components, reduce equipment replacement cost.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum phase change boiler technology, specifically relating to a regenerative vacuum phase change boiler. Background Technology

[0002] As a highly efficient and energy-saving heat exchange device, the thermal storage vacuum phase change boiler is widely used in industrial heating, commercial building hot water supply, and residential heating due to its advantages such as high heat transfer efficiency of phase change media in a vacuum environment and safe and stable operation. The core working principle of this type of boiler is as follows: the boiler body (usually a sealed vacuum shell) is filled with phase change media and heat storage materials. The heat exchange tubes run through the phase change media and heat storage material areas inside the boiler body. The low-temperature medium to be heated (such as tap water) is input into the heat exchange tubes through the water supply pipe. After heat exchange with the phase change media and heat storage materials, it is transformed into a high-temperature heat medium and output to the user end, realizing the efficient transfer and utilization of heat.

[0003] In practical applications, the quality of the low-temperature heating medium (hereinafter referred to as "makeup water") input through the water supply pipe directly affects the boiler's operating performance. However, existing boilers lack adequate filtration for the makeup water, making it easy for impurities in the makeup water to enter the heat exchange tubes. These impurities easily form scale after depositing on the inner wall of the heat exchange tubes, which not only significantly reduces the heat transfer efficiency of the heat exchange tubes but also exacerbates the electrochemical corrosion of the heat exchange tubes. In severe cases, it is necessary to replace the heat exchange tubes, phase change medium, or even the entire boiler body in advance, greatly increasing the operation, maintenance, and replacement costs of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a regenerative vacuum phase change boiler that can filter out impurities contained in water.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A regenerative vacuum phase change boiler includes a boiler body with heat exchange tubes installed on the boiler body. One end of the heat exchange tubes is connected to a water supply pipe, and the other end of the heat exchange tubes is connected to the water supply pipes through a filter mechanism. The filter mechanism includes a circular tube with connecting pipes installed at both ends. The two connecting pipes are respectively connected to the heat exchange tubes and the water supply pipes. Two sleeves are fitted on the circular tubes. The circular tubes and the sleeves are movably connected, as are the connecting pipes and the sleeves. External threads are provided on the outer sides of the circular tubes near both ends and on the outer sides of the connecting pipes. Internal threads adapted to the external threads are provided on the inner sides of the sleeves.

[0007] Rectangular plates are slidably connected to the inner sides of both ends of the circular tube. Multiple circular rings are installed on the top of the rectangular plates and inside the circular tube. An activated carbon filter plate is installed between every two adjacent circular rings on one rectangular plate, and a precision filter plate is installed between every two adjacent circular rings on the other rectangular plate.

[0008] One end of the heat exchange tube and the water supply tube is fixed with a first flange, and the outside of the two connecting tubes is fixed with a second flange adapted to the first flange. The two first flanges are fixedly connected to the two second flanges respectively.

[0009] The technical effects achieved by this utility model are as follows:

[0010] This invention effectively removes impurities such as organic matter, fine particles, and suspended solids from the water supply medium through dual filtration of activated carbon filter plates and precision filter plates. This significantly improves the quality of the boiler's makeup water, reduces the deposition of impurities on the inner wall of the heat exchange tubes and on the surface of the phase change medium and heat storage materials inside the boiler body, thereby reducing the risk of boiler scaling and corrosion, extending the service life of core components such as the boiler body and heat exchange tubes, and reducing equipment replacement costs. In addition, the filter mechanism can be disassembled and assembled simply by rotating the sleeve, greatly shortening the replacement time of the activated carbon filter plates and precision filter plates, reducing equipment downtime for maintenance, and improving boiler operation and replacement efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure on the circular tube in this utility model;

[0013] Figure 3 This is a schematic diagram of the structural separation on the circular tube in this utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the circular tube and the rectangular plate in this utility model.

[0015] The attached diagram lists the components represented by each number as follows:

[0016] 1. Round tube; 2. Sleeve; 3. Circular ring; 4. Rectangular plate; 5. Activated carbon filter plate; 6. Connecting pipe; 7. Internal thread; 8. External thread; 9. Rectangular block; 10. Boiler body; 11. Heat exchange tube; 12. Water supply pipe; 13. First flange; 14. Second flange; 15. Precision filter plate. Detailed Implementation

[0017] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0018] like Figure 1-4As shown, a heat storage vacuum phase change boiler includes a boiler body 10, on which a heat exchange tube 11 is installed. One end of the heat exchange tube 11 is connected to a water supply pipe 12 through a filter mechanism to input a low-temperature medium to be heated, and the other end of the heat exchange tube 11 is connected to a user pipeline to output a high-temperature heat medium to the user.

[0019] The boiler body 10, heat exchange tube 11, and water supply pipe 12 mentioned above are all existing mature technologies. The heat exchange tube 11 ensures efficient heat exchange in the phase change medium and heat storage material area inside the boiler body 10. Its two ends penetrate the shell wall of the boiler body 10 and protrude to the outside for easy connection to external pipelines. The penetration points are sealed to maintain a vacuum environment. In this embodiment, the boiler body 10, heat exchange tube 11, and water supply pipe 12 will not be described in detail. The core solution of this technical solution lies in the specific structure of the filtration mechanism.

[0020] See attached document Figure 1 -Appendix Figure 4 The filtration mechanism includes a circular tube 1, whose circular structure is adapted to the media flow path, and whose internal space can stably accommodate multiple components.

[0021] Both ends of the circular tube 1 are equipped with connecting pipes 6. A second flange 14 is welded and fixed on the connecting pipe 6. A first flange 13 is welded and fixed on both the end of the heat exchange tube 11 near the water supply pipe 12 and the end of the water supply pipe 12 near the heat exchange tube 11. A sealing gasket is provided between the first flange 13 and the second flange 14. The first flange 13 and the second flange 14 are fastened with bolts, and the sealing gasket is used to seal the connection.

[0022] See attached document Figure 3 and attached Figure 4 External threads 8 are provided on the outer sides of the round tube 1 near both ends and on the outer side of the connecting tube 6. Two sleeves 2 are fitted on the round tube 1. The inner side of the sleeve 2 is provided with an internal thread 7 that is adapted to the external threads 8. The round tube 1 and the sleeve 2, as well as the connecting tube 6 and the sleeve 2, are connected by the mating threads of the external threads 8 and the sleeve 2.

[0023] In addition, a rectangular block 9 is installed on the outside of the sleeve 2. On the one hand, when the sleeve 2 is rotated, the rectangular block 9 can be used to hold the sleeve 2 more firmly and avoid slipping the hand. On the other hand, it is convenient for tools such as pliers and wrenches to clamp the sleeve 2, reducing the difficulty of operation during disassembly and assembly.

[0024] Sealing ring gaskets are provided at both ends of the circular pipe 1. When the two ends of the circular pipe 1 are aligned and connected with the two connecting pipes 6 respectively, the sealing ring gaskets at both ends can achieve the seal between the circular pipe 1 and the two connecting pipes 6 to prevent water leakage.

[0025] See attached document Figure 3 and attached Figure 4A rectangular plate 4 is provided on the inner side of both ends of the circular tube 1. A rectangular groove adapted to the rectangular plate 4 is provided on the circular tube 1. The rectangular plate 4 is located inside the rectangular groove. The circular tube 1 and the rectangular plate 4 are slidably connected through the rectangular groove.

[0026] The rectangular groove allows the rectangular plate 4 to slide out or into the round tube 1. The rectangular groove design not only allows the rectangular plate 4 to slide out or into the round tube 1 smoothly, but also limits the rectangular plate 4 in the horizontal and vertical directions, preventing the rectangular plate 4 from shifting or shaking during the flow of the medium, thus ensuring the stability of filtration.

[0027] Multiple circular rings 3 are installed on the top of the rectangular plate 4 and inside the circular tube 1. Sealing rings are installed on the outside of the circular rings 3, and the circular rings 3 are sealed to the circular tube 1.

[0028] On one of the rectangular plates 4 near the water supply pipe 12, an activated carbon filter plate 5 is installed between every two adjacent circular rings 3.

[0029] On one of the rectangular plates 4 near the heat exchange tube 11, an activated carbon filter plate 5 is installed between every two adjacent circular rings 3.

[0030] The activated carbon filter plate 5 can be positioned near the water supply pipe 12, and the precision filter plate 15 can be positioned near the heat exchange pipe 11. The activated carbon filter plate 5 first performs preliminary filtration on the low-temperature medium to be heated, and then the precision filter plate 15 performs secondary fine filtration, forming a "dual filtration" system, which significantly improves the filtration effect. Moreover, there are no fewer than two activated carbon filter plates 5 and precision filter plates 15. By stacking multiple sets of filter elements, the filtration capacity is further enhanced, ensuring that the removal of impurities in the medium is more thorough.

[0031] Activated carbon filter plate 5: Made of activated carbon, it has a rich pore structure and can efficiently adsorb soluble impurities such as organic matter, odor, and pigments in the low-temperature medium to be heated, completing the preliminary filtration and reducing the burden on subsequent filtration.

[0032] Precision filter plate 15: Made of high-polymer composite filter material or stainless steel microfiltration membrane, it has uniform micron-sized pores and can accurately intercept insoluble impurities such as tiny particles, suspended solids, and colloids that remain after the initial filtration by activated carbon filter plate 5, achieving deep and fine filtration. At the same time, the surface of the plate is smooth and does not easily adsorb and accumulate impurities, which can reduce the resistance to media flow.

[0033] Working principle

[0034] Installation phase: First, install the activated carbon filter plate 5 on the rectangular plate 4 on the side close to the water supply pipe 12, and place it between two adjacent circular rings 3;

[0035] The precision filter plate 15 is installed on the rectangular plate 4 on the side close to the heat exchange tube 11, and is also placed between two adjacent circular rings 3.

[0036] Then, the two second flanges 14 are fastened to the first flanges 13 on the heat exchange tube 11 and the water supply tube 12 respectively with bolts, and the sealing gasket between them is used to achieve a seal.

[0037] Next, align the two ends of the round tube 1 with the two connecting pipes 6 respectively, ensuring that the activated carbon filter plate 5 inside the round tube 1 faces the water supply pipe 12 and the precision filter plate 15 faces the heat exchange tube 11. The sealing of the round tube 1 and the connecting pipe 6 is achieved through the sealing ring gasket at the port of the round tube 1.

[0038] Finally, rotate the sleeve 2 so that the internal thread 7 on the inside of the sleeve 2 is tightly engaged with the external thread 8 on the outside of the round pipe 1 and the connecting pipe 6, thus completing the fixing of the round pipe 1. At this time, the round pipe 1, the heat exchange pipe 11 and the water supply pipe 12 form a connected medium channel.

[0039] Filtration stage: When the low-temperature medium to be heated, such as water, in the water supply pipe 12 is injected into the round pipe 1 through the connecting pipe 6, it first flows through the activated carbon filter plate 5. The organic matter, odor and other impurities in the medium are adsorbed by the activated carbon filter plate 5, completing the preliminary filtration. The medium that has passed the preliminary filtration continues to flow to the precision filter plate 15. The tiny particles, suspended solids and other impurities in the medium are intercepted by the precision filter plate 15, completing the secondary fine filtration.

[0040] Finally, the clean medium, after double filtration, flows into the heat exchange tube 11 through the connecting pipe 6 on the other side and participates in the heat exchange process inside the boiler body 10.

[0041] Replacement stage: When the activated carbon filter plate 5 and the precision filter plate 15 reach the filtration saturation state, hold the rectangular block 9 and rotate the sleeve 2 to disengage the inner thread 7 of the sleeve 2 from the outer thread 8 of the round pipe 1 and the connecting pipe 6, thus releasing the fixation.

[0042] Then, remove the round tube 1 from between the two connecting tubes 6, and slide the rectangular plate 4 inside the round tube 1 out along the rectangular groove. The activated carbon filter plate 5 and the precision filter plate 15 can then be replaced. After the replacement is completed, reverse the steps of the installation stage to restore the working state of the filter mechanism.

[0043] In summary, the dual filtration of activated carbon filter plate 5 and precision filter plate 15 effectively removes impurities such as organic matter, fine particles, and suspended solids from the input medium in the water supply pipe 12, significantly improving the quality of the makeup water in the boiler body 10, reducing the deposition of impurities on the inner wall of the heat exchange tube 11 and on the surface of the phase change medium and heat storage material inside the boiler body 10, thereby reducing the risk of boiler scaling and corrosion, extending the service life of core components such as the boiler body 10 and heat exchange tube 11, and reducing equipment replacement costs.

[0044] The filter mechanism can be disassembled and assembled simply by rotating the sleeve 2, which greatly shortens the replacement time of the activated carbon filter plate 5 and the precision filter plate 15, reduces equipment downtime for maintenance, and improves boiler operation and replacement efficiency.

[0045] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A regenerative vacuum phase change boiler, comprising a boiler body (10), wherein a heat exchange tube (11) is installed on the boiler body (10), and a water supply pipe (12) is provided at one end of the heat exchange tube (11), characterized in that: One end of the heat exchange tube (11) is connected to the water supply pipe (12) through a filtration mechanism. The filtration mechanism includes a round tube (1) with connecting pipes (6) installed at both ends of the round tube (1). The two connecting pipes (6) are connected to the heat exchange tube (11) and the water supply pipe (12) respectively. Two sleeves (2) are fitted on the round tube (1). The round tube (1) and the sleeves (2) are movably connected, as are the connecting pipes (6) and the sleeves (2). Rectangular plates (4) are slidably connected to the inner sides of both ends of the round tube (1). Multiple ring parts (3) are installed on the top of the rectangular plate (4) and inside the round tube (1). An activated carbon filter plate (5) is installed between every two adjacent ring parts (3) on one of the rectangular plates (4), and a precision filter plate (15) is installed between every two adjacent ring parts (3) on the other rectangular plate (4).

2. The regenerative vacuum phase change boiler according to claim 1, characterized in that: One end of each heat exchange tube (11) and water supply tube (12) is fixed with a first flange (13), and the outer sides of each of the two connecting tubes (6) are fixed with a second flange (14) adapted to the first flange (13). The two first flanges (13) are respectively fixedly connected to the two second flanges (14).

3. A regenerative vacuum phase change boiler according to claim 1, characterized in that: The outer sides of the round tube (1) near both ends and the outer side of the connecting tube (6) are provided with external threads (8), and the inner side of the sleeve (2) is provided with internal threads (7) adapted to the external threads (8).

4. A regenerative vacuum phase change boiler according to claim 1, characterized in that: A rectangular block (9) is installed on the outside of the sleeve (2).

5. A regenerative vacuum phase change boiler according to claim 1, characterized in that: The circular tube (1) is provided with a rectangular groove adapted to the rectangular plate (4), and the rectangular plate (4) is located inside the rectangular groove.

6. A regenerative vacuum phase change boiler according to claim 1, characterized in that: Both ends of the circular tube (1) are provided with sealing ring gaskets.

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