Solar unpowered microgroove flat plate superconductive heat pipe heating device for seawater desalination

Abstract

The invention discloses a solar unpowered microgroove flat plate superconductive heat pipe heating device for seawater desalination, which relates to the technical field of seawater desalination heating and comprises a flat plate type heat pipe and a heating box body. A vacuum cavity is formed in the flat plate type heat pipe, the cavity is filled with a phase change heat-conducting medium, and the flat plate type heat pipe comprises an evaporation hydrophilic section and a condensation hydrophobic section. The evaporation hydrophilic section converts the phase change heat-conducting medium from a liquid state into a gas state by absorbing solar heat and moves to the condensation hydrophobic section; the condensation hydrophobic section enables the phase-change heat-conducting medium to be converted into a liquid state from a gaseous state by releasing heat and to flow back to the evaporation hydrophilic section, and heat transfer and unpowered circulation are achieved. The heating box body is located above the condensation drainage section and used for being filled with seawater to be heated. Efficient heat transfer is achieved through circulation of the phase-change heat-conducting medium, energy conservation and environmental protection are achieved, and an efficient heating scheme is provided for seawater desalination.

Description

Technical Field

[0001] The invention relates to the technical field of seawater desalination heating, and in particular to a solar-powered non-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination. Background Art

[0002] About 97% of the world's water resources are seawater, while freshwater accounts for less than 3%, and even less of it can be directly used. With the increase in population, industrialization and agricultural water demand, many regions are facing serious freshwater shortages. Seawater desalination provides a stable source of freshwater for water-scarce areas. Many coastal and island areas lack natural freshwater resources, and seawater desalination can use nearby seawater to reduce the cost of long-distance water transportation.

[0003] The core principle of heating in the desalination process is to increase the temperature to cause water to evaporate, thereby separating water from salt and impurities. This is mainly used in thermal desalination technology, including the following common methods: 1. Multi-stage flash distillation: Seawater is heated to near boiling point and then gradually passes through multiple low-pressure distillation chambers. In each distillation chamber, seawater quickly "flashes" to form water vapor due to reduced pressure. These vapors are condensed into fresh water, and the remaining concentrated brine is discharged; 2. Multi-effect distillation: Seawater enters multiple evaporators in turn and gradually evaporates at a lower temperature. Each stage of evaporation uses the heat released by the condensation of water vapor in the previous stage; 3. Compressed gas distillation: The water vapor generated after the seawater is heated is compressed, thereby increasing the steam temperature and pressure, and the released heat is used to further heat the new seawater.

[0004] After research, the inventors found that in the heating process of seawater desalination in the prior art, energy loss is large and the uniformity during heating is poor, which affects the heating efficiency of seawater. Summary of the invention

[0005] The invention discloses a solar-powered non-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination, so as to improve the technical problems of poor uniformity and large energy loss in seawater desalination heating in the related art.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions: A solar non-powered micro-groove flat superconducting heat pipe heating device for seawater desalination comprises: a flat heat pipe, the interior of the flat heat pipe has a vacuum cavity, the vacuum cavity is filled with a phase-change heat-conducting medium, the flat heat pipe comprises a connected evaporation hydrophilic section and a condensation hydrophobic section, the evaporation hydrophilic section can drive the phase-change heat-conducting medium to change from a liquid state to a gaseous state after absorbing the heat of solar energy, so that the gaseous phase-change heat-conducting medium moves toward the condensation hydrophobic section, the condensation hydrophobic section can drive the phase-change heat-conducting medium to change from a gaseous state to a liquid state after the heat of the gaseous phase-change heat-conducting medium is released, so that the liquid phase-change heat-conducting medium flows toward the evaporation section; and a heating box, which is arranged on the upper surface of the condensation hydrophobic section and is used to fill the seawater to be heated.

[0007] Preferably, the inner surface of the evaporation hydrophilic section is covered with a super hydrophilic layer, and the super hydrophilic layer can drive the phase change heat conductive medium to spread or form beads on the inner surface of the evaporation hydrophilic section.

[0008] Preferably, the super hydrophilic layer is configured as a silicon dioxide coating.

[0009] Preferably, the inner surface of the condensation hydrophobic section is coated with a super hydrophobic layer, and the super hydrophobic layer can drive the phase-change heat-conducting medium to form a liquid film on the inner surface of the condensation hydrophobic section.

[0010] Preferably, the super hydrophobic layer is configured as a silicone rubber layer.

[0011] Preferably, the upper and lower inner walls of the flat-plate heat pipe have a plurality of continuous raised portions and recessed portions along the width direction thereof, two adjacent recessed portions are separated by a raised portion, and the recessed portions form a groove body extending along the length direction of the flat-plate heat pipe, and the groove body allows a gaseous or liquid phase-change heat-conducting medium to pass through.

[0012] Preferably, the flat heat pipe further comprises a hose section, which is connected between the evaporation hydrophilic section and the condensation hydrophobic section, and the hose section can be bent and deformed under the action of an external force so that the evaporation hydrophilic section tilts downward compared to the condensation hydrophobic section.

[0013] Preferably, it also includes an adjusting component, a rotation limiting component and a self-locking component, wherein the adjusting component is installed below the evaporation hydrophilic section, and the adjusting component is used to drive the evaporation hydrophilic section to switch between a horizontal extension state and a tilted downward state; the rotation limiting component is arranged between the evaporation hydrophilic section and the condensation hydrophobic section and is located on the outside of the hose section, and the rotation limiting component is used to limit the evaporation hydrophilic section from continuing to tilt upward while maintaining a horizontal state with the condensation hydrophobic section, and at the same time limit the maximum rotation tilt angle of the evaporation hydrophilic section tilting downward; the self-locking component is arranged between the adjusting component and the rotation limiting component, and the self-locking component has a first state and a second state, wherein, when the self-locking component is in the first state, the self-locking component locks the rotation limiting component so that the evaporation hydrophilic section is maintained in a horizontal position with the condensation hydrophobic section, and at the same time locks the adjustment component for operation; when the self-locking component is in the second state, the self-locking component simultaneously unlocks the adjusting component and the rotation limiting component so that the adjusting component can operate normally and the rotation limiting component can rotate normally.

[0014] Preferably, the adjustment assembly comprises a mounting seat, a threaded rod, a threaded sleeve, an L-shaped rod, a resistance ball, an adjustment handle, a first bevel gear and a second bevel gear; wherein the mounting seat is installed on the ground below the evaporation hydrophilic section, the threaded rod is vertically rotatably arranged in the mounting seat, one end of the adjustment handle is rotatably arranged on the mounting seat, and the first bevel gear is coaxially arranged at one end of the adjustment handle close to the threaded rod, the second bevel gear is coaxially arranged on the threaded rod, and the first bevel gear is meshed with the second bevel gear; the threaded sleeve is threadedly sleeved on the threaded rod, a part of the rod section of the L-shaped rod is connected to the threaded sleeve, and the other part of the rod section extends vertically upward, the resistance ball is rotatably arranged on the top of the other part of the rod section of the L-shaped rod and is used to roll and resist with the bottom wall of the evaporation hydrophilic section, the threaded sleeve is provided with a guide block, a guide groove is vertically provided in the mounting seat, and at least part of the guide block is slidably inserted in the guide groove.

[0015] Preferably, the rotation limiting assembly comprises a first pipe section, a second pipe section, a lug and a rotating rod, the lugs are arranged on both sides of the center of the end openings of the first pipe section and the second pipe section that are close to each other, and the lugs are provided with openings, the openings on two adjacent lugs are arranged in a right-facing and fit manner, the rotating rod is rotatably inserted into the openings of two adjacent lugs, the first pipe section is connected to the end of the evaporation hydrophilic section, and the second pipe section is connected to the end of the condensation hydrophobic section; a rotation gap is formed between the first pipe section and the second pipe section and below the lug, and the width of the rotation gap gradually increases from top to bottom along the radial direction of the first pipe section; when the first pipe section and the second pipe section are axially parallel, the ends of the first pipe section and the second pipe section above the lug fit together; the self-locking assembly comprises a magnet block, a moving iron block, a vertical rod and a blocking rod, a sliding cavity for sliding the moving iron block is axially provided in the first pipe section and the second pipe section, and a groove is axially provided in the lower tube wall of the second pipe section, One end of the vertical rod is connected to the movable iron block, and the other end extends vertically downward after passing through the strip groove, and the blocking rod is horizontally arranged at the lower end of the vertical rod, and the magnet blocks are provided on the inner end walls of the first pipe section and the second pipe section that are away from each other, and the magnet blocks can be magnetically adsorbed with the movable iron block; wherein, when the self-locking assembly is in the first state, one end of the movable iron block is separated from the magnet block in the second pipe section, and the other end is fitted with the magnet block in the first pipe section, and at this time, a part of the movable iron block is located in the sliding cavity of the first pipe section, and the other part is located in the sliding cavity of the second pipe section, and the end of the blocking rod away from the vertical rod extends into the mounting seat and is vertically fitted with the lower end wall of the threaded sleeve to limit the vertical downward movement of the threaded sleeve; when the self-locking assembly is in the second state, the movable iron block is completely located in the sliding cavity of the second pipe section, and the movable iron block is adsorbed with the magnet block in the second pipe section, and at the same time, the end of the blocking rod away from the vertical rod is located outside the mounting seat.

[0016] The technical solution adopted by the present invention can achieve the following beneficial effects: The solar non-powered micro-groove flat superconducting heat pipe heating device of the present application makes comprehensive use of a number of technical characteristics to achieve efficient, non-powered heat transfer and heating functions. By filling the flat heat pipe with a phase-change heat-conducting medium, and combining the design of the evaporation hydrophilic section and the condensation hydrophobic section, the phase change principle is used to achieve efficient transfer and circulation of heat, avoiding the consumption of extra energy. The coating of the super-hydrophilic layer and the super-hydrophobic layer further optimizes the behavior of the phase-change heat-conducting medium during evaporation and condensation, enhances the heat and mass transfer efficiency, and has self-cleaning and anti-pollution functions, thereby improving the long-term stability of the device. The design of the protrusion and the recessed portion significantly increases the contact area of ​​the inner surface, reduces the interference between the phase-change heat-conducting medium, and further improves the circulation efficiency and uniformity of the device.

[0017] In addition, by setting the hose section, adjustment component, rotation limit component and self-locking component, the present application realizes the flexible adjustment of the inclination angle of the evaporation hydrophilic section, ensuring that efficient heat transfer and circulation can be maintained under different working conditions. The overall design has the advantages of simple structure, high energy efficiency and strong adaptability, providing a green and sustainable heating solution for the field of seawater desalination. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 This is a cross-sectional view of the structure of the embodiment of the present application for showing the evaporation hydrophilic section and the condensation hydrophobic section; Figure 3 is a schematic diagram of an embodiment of the present application for showing that the self-locking component is in a first state; Figure 4 is a schematic diagram of an embodiment of the present application for showing that the self-locking component is in the second state; Figure 5 is a partial cross-sectional view of an embodiment of the present application for showing that the self-locking component is in a first state; Figure 6 yes Figure 5 A magnified view of part A in FIG. Figure 7 is a partial cross-sectional view of an embodiment of the present application for showing that the self-locking component is in a second state; Figure 8 yes Figure 7 A magnified view of part B in FIG. Fig. 9 It is a structural schematic diagram for illustrating a rotation limit assembly according to an embodiment of the present application.

[0020] In the figure: 100, flat heat pipe; 110, evaporation hydrophilic section; 111, super hydrophilic layer; 120, condensation hydrophobic section; 121, super hydrophobic layer; 130, raised portion; 140, recessed portion; 141, trough; 150, hose section; 200, heating box; 300, adjustment assembly; 310, mounting seat; 311, guide groove; 320, threaded rod; 330, threaded sleeve; 331, guide block; 340, L-shaped rod; 350, resistance ball; 360, adjustment handle; 370, first bevel gear; 380, second bevel gear; 400, rotation limit assembly; 410, first pipe section; 420, second pipe section; 421, groove; 430, lug; 440, rotating rod; 450, rotation gap; 500, self-locking assembly; 510, magnet block; 520, moving iron block; 530, vertical rod; 540, blocking rod. DETAILED DESCRIPTION

[0021] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0022] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0023] In the relevant technology, seawater accounts for about 97% of the world's water resources, while freshwater resources that can be directly used are less than 3%. Among them, with the growth of population, the development of industrialization and the increasing demand for agricultural water, many regions in the world are facing serious freshwater shortages. In order to alleviate this problem, seawater desalination technology has gradually been applied to water-scarce areas and has become a key means of providing a stable source of fresh water. Especially in coastal and island areas, due to the scarcity of natural freshwater resources, seawater desalination technology can make full use of nearby seawater resources and effectively reduce the cost of long-distance water transportation, which has important economic and social significance.

[0024] In seawater desalination technology, heating is the core step to separate water from salt and other impurities. The main principle is to cause seawater to evaporate by heating and obtain fresh water through the condensation process. Currently, thermal desalination technology is the most widely used, including the following methods: 1. Multi-stage flash distillation: Seawater is heated to near boiling point and then gradually passes through multiple low-pressure distillation chambers. In each distillation chamber, the seawater quickly "flashes" to form water vapor due to the reduction in pressure. These vapors are condensed into fresh water, and the remaining concentrated brine is discharged; 2. Multi-effect distillation: Seawater enters multiple evaporators in sequence and gradually evaporates at a lower temperature. Each stage of evaporation utilizes the heat released by the condensation of water vapor in the previous stage; 3. Compressed gas distillation: The water vapor generated by the heated seawater is compressed, thereby increasing the steam temperature and pressure, and the released heat is used to further heat new seawater.

[0025] Although the existing seawater desalination technology has alleviated the shortage of fresh water resources to a certain extent, the inventors have found through research that the energy loss in the existing heating process is large and the heating uniformity is insufficient, which significantly affects the heating efficiency.

[0026] The reasons for the large energy loss are as follows: in the multi-stage flash distillation technology, each distillation chamber needs to heat the seawater to a specific temperature. Although flash evaporation is achieved by reducing the pressure, part of the heat energy cannot be fully recovered and utilized due to the limited efficiency of heat transfer between distillation chambers, resulting in low overall energy utilization; at the same time, in the multi-stage flash distillation technology, each distillation chamber needs to heat the seawater to a specific temperature. Although flash evaporation is achieved by reducing the pressure, part of the heat energy cannot be fully recovered and utilized due to the limited efficiency of heat transfer between distillation chambers, resulting in low overall energy utilization; furthermore, in the compressed gas distillation technology, the compression process of water vapor itself requires additional energy consumption. At the same time, there is heat loss in the high-temperature and high-pressure steam during the transportation process, which further reduces the overall energy utilization efficiency.

[0027] The reasons for the poor heating uniformity are: in multi-stage flash distillation, the heat distribution in the distillation chamber is limited by the seawater flow rate, pressure gradient and equipment structure, and the heating may be uneven, resulting in some seawater failing to reach the ideal evaporation conditions; in the multi-effect distillation process, due to the differences in the flow rate and heating conditions of seawater in different evaporators, the evaporation efficiency may be reduced and some thermal energy is not fully utilized; in compressed gas distillation, it is difficult to achieve uniform distribution of steam under high temperature and high pressure conditions, and the instability of the condensation heat transfer efficiency further affects the uniformity of heating.

[0028] Therefore, how to improve energy utilization efficiency and heating uniformity in the heating process of seawater desalination has become an important technical problem that needs to be solved urgently in the current technical field.

[0029] The following is combined with Figures 1 to 9 , a solar-powered, micro-grooved, flat-plate superconducting heat pipe heating device for seawater desalination provided by the present application is described in detail through specific embodiments and application scenarios.

[0030] Please refer to Figure 1 to Figure 2 The present application provides a solar non-powered micro-groove flat superconducting heat pipe heating device for seawater desalination, which includes a flat heat pipe 100 and a heating box 200. The flat heat pipe 100 has a vacuum cavity inside, and the vacuum cavity is filled with a phase-change heat-conducting medium. The flat heat pipe 100 includes a connected evaporation hydrophilic section 110 and a condensation hydrophobic section 120. The evaporation hydrophilic section 110 can drive the phase-change heat-conducting medium from liquid to gas after absorbing the heat of solar energy, so that the gaseous phase-change heat-conducting medium moves toward the condensation hydrophobic section 120. The condensation hydrophobic section 120 can drive the phase-change heat-conducting medium from gas to liquid after the heat of the gaseous phase-change heat-conducting medium is released, so that the liquid phase-change heat-conducting medium flows toward the evaporation section.

[0031] Exemplarily, both ends of the flat heat pipe 100 are sealed by an extrusion process, which can save cleaning and welding processes and reduce manufacturing costs. Further, the flat heat pipe 100 is configured as a flat tube structure to expand the area of ​​heat absorption and heat release and improve heat conversion efficiency. Exemplarily, the flat heat pipe 100 is made of stainless steel or titanium alloy, which has good corrosion resistance and heat transfer performance.

[0032] Meanwhile, the heating box 200 is disposed on the upper surface of the condensation drain section 120 , and the heating box 200 is used to be filled with seawater to be heated.

[0033] On this basis, by combining the heat collection of solar energy with the phase change heat conduction technology, the structural design and the efficiency of heat energy utilization are significantly improved, and the technical problems of large energy loss and poor heating uniformity of the existing seawater desalination device are solved. Specifically, the flat heat pipe 100 uses the phase change heat conduction medium in the internal vacuum cavity as the heat transfer medium. After absorbing the heat of solar energy, the evaporation hydrophilic section 110 quickly converts the phase change heat conduction medium from liquid to gas, and the hydrophilic property of the surface of the evaporation hydrophilic section 110 promotes the efficient adsorption and diffusion of the phase change heat conduction medium, ensuring uniform heat transfer and full gasification. After the phase change heat conduction medium is in the gaseous state, it automatically moves to the condensation hydrophobic section 120. Through the inherent unpowered circulation principle, it completes liquefaction and releases heat on the surface of the condensation hydrophobic section 120, and the hydrophobicity of the condensation hydrophobic section 120 effectively inhibits the excessive diffusion of the phase change heat conduction medium, prompting the liquid to quickly condense to form droplets, further improving the efficiency of heat transfer. The liquefied phase-change heat-conducting medium naturally flows back to the evaporation hydrophilic section 110 due to the decrease in temperature and increase in density, thereby realizing a continuous unpowered thermal cycle process. In this process, the characteristic design of the evaporation hydrophilic section 110 and the condensation hydrophobic section 120 makes the heat transfer have high directionality and uniformity, which not only reduces the energy loss caused by the uneven heat transfer path, but also significantly improves the heating efficiency and uniformity of the seawater in the heating box 200. By efficiently converting solar energy into heat transfer to seawater, a green heating method without additional energy consumption is realized, providing a low-energy consumption and high-efficiency solution for seawater desalination equipment, effectively overcoming the defects of the existing technology, and demonstrating significant technical effects and innovative value.

[0034] Exemplarily, the phase-change heat-conducting medium can be configured as any one of superconducting liquid, unpowered liquid and distilled water. Superconducting liquid, unpowered liquid and distilled water are commonly used phase-change heat-conducting media in the art, and their specific heat-conducting principles will not be described in detail here.

[0035] In some embodiments, Figure 1 , Figure 2As shown, the inner surface of the evaporation hydrophilic section 110 is covered with a super hydrophilic layer 111, and the super hydrophilic layer 111 can drive the phase change heat-conducting medium to spread or form beads on the inner surface of the evaporation hydrophilic section 110. Exemplarily, the super hydrophilic layer 111 is configured as a silicon dioxide coating. On this basis, the super hydrophilic layer 111 is made of a silicon dioxide coating, and its excellent super hydrophilicity significantly enhances the spreading ability of the phase change heat-conducting medium on the inner surface of the evaporation hydrophilic section 110, so that the heat-conducting medium can be evenly distributed and maximized contact with the heat pipe surface, thereby ensuring that the heat absorbed by the solar energy can be more efficiently transferred to the phase change heat-conducting medium. At the same time, the super hydrophilic layer 111 can also cause the heat-conducting medium to form a beaded structure during the evaporation stage, which helps to reduce the flow resistance caused by the surface tension effect, thereby accelerating the gasification process of the liquid phase change heat-conducting medium. Due to the improvement of gasification efficiency, the heat released by the evaporating hydrophilic section 110 can drive the phase-change heat-conducting medium to move toward the condensing hydrophobic section 120 more quickly and evenly, further improving the unpowered thermal cycle mechanism of the entire device. In addition, the stable chemical properties of the silica coating ensure that the super-hydrophilic layer 111 can maintain excellent physical properties for a long time under high temperature and high humidity environments, thereby improving the service life and operational stability of the device. This design effectively overcomes the problems of insufficient local heat absorption and energy loss that may be caused by the uneven distribution of phase-change heat-conducting media in existing devices, greatly improves the uniformity and overall efficiency of seawater heating, and fully demonstrates the technical advantages of this device in the field of green and efficient seawater desalination.

[0036] In some embodiments, the inner surface of the condensation hydrophobic section 120 is coated with a super hydrophobic layer 121, which can drive the phase change heat conductive medium to form a liquid film on the inner surface of the condensation hydrophobic section 120. Exemplarily, the super hydrophobic layer 121 is configured as a silicone rubber layer. On this basis, the silicone rubber layer provides excellent super hydrophobic properties through its unique material properties and the micro-nano structure constructed by the surface silicone particles, so that the phase change heat conductive medium can quickly form a stable liquid film on the inner surface of the condensation hydrophobic section 120, thereby significantly reducing the thermal resistance caused by the retention of droplets during the condensation process. In addition, the self-cleaning and anti-fouling properties of silicone rubber ensure that the inner surface of the condensation hydrophobic section 120 can still maintain an efficient condensation effect after long-term operation, avoiding the influence of impurity attachment and corrosion on the heat transfer efficiency. At the same time, the super hydrophobic surface can reduce the residence time of the condensed liquid on the surface through the rapid drainage characteristics, accelerate the reflux process of the phase change heat conductive medium, thereby further optimizing the unpowered circulation efficiency of the device. This design effectively solves the problems of reduced condensation efficiency and uneven heat transfer caused by liquid retention and surface contamination in the traditional condensation section, significantly improves the heat and mass transfer efficiency, ensures the efficient and stable operation of the entire heating device during the seawater desalination process, and provides important technical support for low-energy seawater desalination.

[0037] In some embodiments, in combination Figure 1 , Figure 2 The upper and lower inner walls of the flat-plate heat pipe 100 have a plurality of continuous raised portions 130 and recessed portions 140 along the width direction thereof, two adjacent recessed portions 140 are separated by a raised portion 130, and the recessed portions 140 form a groove body 141 extending along the length direction of the flat-plate heat pipe 100, and the groove body 141 can allow a gaseous or liquid phase-change heat-conducting medium to pass through.

[0038] Based on this, the alternating arrangement structure of the raised portion 130 and the recessed portion 140 greatly increases the contact area between the phase-change heat-conducting medium and the inner wall surface, thereby enhancing the rate and uniformity of heat transfer in the heat pipe. At the same time, the groove body 141 formed by the recessed portion 140 and extending along the length direction of the flat-plate heat pipe 100 provides an independent flow channel for the gaseous or liquid phase-change heat-conducting medium, reducing the flow interference and obstruction that may occur between the phase-change heat-conducting medium, and ensuring that the gas and liquid phases can circulate smoothly and efficiently. In addition, the periodic structure of the raised portion 130 and the recessed portion 140 can guide the uniform distribution of the phase-change heat-conducting medium during the flow process, avoiding the problem of uneven heat transfer caused by local retention or flow deviation, thereby optimizing the thermal cycle performance of the entire device. This design achieves active optimization of the flow path and heat transfer mode of the phase-change heat transfer medium by finely regulating the internal structure of the flat-plate heat pipe 100. It not only improves the overall heat exchange efficiency of the flat-plate heat pipe 100, but also reduces the energy loss during operation of the device, ensuring the stability and continuity of the seawater desalination process, and providing important technical support for the efficient application of solar non-powered heating devices.

[0039] In some embodiments, Figure 3 , Figure 4 As shown, the flat heat pipe 100 further includes a hose section 150, which is connected between the evaporation hydrophilic section 110 and the condensation hydrophobic section 120. The hose section 150 can be bent and deformed under the action of an external force, so that the evaporation hydrophilic section 110 is tilted downward compared to the condensation hydrophobic section 120. After such a configuration, when the evaporation hydrophilic section 110 is tilted downward compared to the condensation hydrophobic section 120, the gaseous phase-change heat-conducting medium is more likely to tilt upward along the length direction of the evaporation hydrophilic section 110 to enter the condensation hydrophobic section 120, and similarly, the liquid phase-change heat-conducting medium is more likely to tilt downward along the length direction of the evaporation hydrophilic section 110 to enter the evaporation hydrophilic section 110, so as to further improve the heating efficiency in the heating box 200.

[0040] In some embodiments, Figure 5~Figure 8, further comprising an adjustment component 300, a rotation limit component 400 and a self-locking component 500. The adjustment component 300 is installed below the evaporation hydrophilic section 110. The adjustment component 300 is used to drive the evaporation hydrophilic section 110 to switch between a horizontal extension state and a tilted downward state. Exemplarily, the rotation limit component 400 is disposed between the evaporation hydrophilic section 110 and the condensation hydrophobic section 120 and is located outside the hose section 150. The rotation limit component 400 is used to limit the evaporation hydrophilic section 110 from continuing to tilt upward while maintaining a horizontal state with the condensation hydrophobic section 120, and at the same time limit the maximum rotation tilt angle of the evaporation hydrophilic section 110 tilting downward.

[0041] At the same time, the self-locking component 500 is arranged between the adjusting component 300 and the rotation limit component 400, and the self-locking component 500 has a first state and a second state. When the self-locking component 500 is in the first state, the self-locking component 500 locks the rotation limit component 400 so that the evaporation hydrophilic section 110 is kept in a horizontal position with the condensation hydrophobic section 120, and at the same time, the adjusting component 300 is operationally locked; when the self-locking component 500 is in the second state, the self-locking component 500 unlocks the adjusting component 300 and the rotation limit component 400 at the same time, so that the adjusting component 300 can operate normally and the rotation limit component 400 can rotate normally.

[0042] On this basis, the setting of the adjustment component 300 enables the evaporation hydrophilic section 110 to flexibly switch between the horizontal extension state and the downward tilt state, so as to adapt to the changes in environmental conditions and the difference in solar radiation angles, and realize the active control of the flow driving force between the evaporation hydrophilic section 110 and the condensation hydrophobic section 120. When the evaporation hydrophilic section 110 tilts downward, the gaseous phase-change heat-conducting medium is more likely to rise to the condensation hydrophobic section 120 along the tilting direction, and the liquid phase-change heat-conducting medium can also flow back to the evaporation hydrophilic section 110 along the tilting direction with the help of gravity, thereby further improving the efficiency of heat transfer in the device.

[0043] At the same time, the rotation limit assembly 400 can effectively limit the maximum tilt angle and horizontal state of the evaporation hydrophilic section 110, avoiding the internal flow disorder or damage of the heat pipe caused by excessive tilt angle or improper adjustment, and providing a guarantee for the stable operation of the device. The introduction of the self-locking assembly 500 gives the device the function of precise locking and unlocking in different states, so that the adjustment assembly 300 and the rotation limit assembly 400 can be flexibly coordinated as needed. When the self-locking assembly 500 is in the first state, it can lock the evaporation hydrophilic section 110 to maintain a horizontal position, thereby adapting to the operation scenario where no tilt adjustment is required; when the self-locking assembly 500 is in the second state, the adjustment assembly 300 and the rotation limit assembly 400 are unlocked, allowing the operator to adjust the tilt angle of the evaporation hydrophilic section 110 according to actual needs. Through the coordination of the three, not only the stability of the device under different operating conditions is ensured, but also the tilt angle adjustment of the evaporation hydrophilic section 110 is made more accurate and controllable, thereby optimizing the flow efficiency of the phase-change heat-conducting medium between the evaporation hydrophilic section 110 and the condensation hydrophobic section 120 to the greatest extent, significantly improving the heating efficiency and thermal energy utilization rate of the seawater in the heating box 200, and finally realizing a more efficient and reliable non-powered heat pipe heating solution. And the setting of the self-locking component 500 can prevent the present application from being damaged by misoperation of irrelevant personnel when it is idle, effectively improving the service life of the present application.

[0044] In some embodiments, Figure 5 , Figure 6 As shown, the adjustment assembly 300 includes a mounting seat 310, a threaded rod 320, a threaded sleeve 330, an L-shaped rod 340, a contact ball 350, an adjustment handle 360, a first bevel gear 370 and a second bevel gear 380; wherein the mounting seat 310 is installed on the ground below the evaporation hydrophilic section 110, the threaded rod 320 is vertically rotatably arranged in the mounting seat 310, one end of the adjustment handle 360 ​​is rotatably arranged on the mounting seat 310, and the first bevel gear 370 is coaxially arranged on one end of the adjustment handle 360 ​​close to the threaded rod 320, the second bevel gear 380 is coaxially arranged on the threaded rod 320, and the first bevel gear 370 is meshed with the second bevel gear 380.

[0045] At the same time, the threaded sleeve 330 is threadedly sleeved on the threaded rod 320, a part of the rod section of the L-shaped rod 340 is connected to the threaded sleeve 330, and another part of the rod section extends vertically upward, the abutment ball 350 is rotatably arranged on the top of another part of the rod section of the L-shaped rod 340 and is used to roll against the bottom wall of the evaporation hydrophilic section 110, the threaded sleeve 330 has a guide block 331, and the mounting seat 310 is vertically provided with a guide groove 311, and at least part of the guide block 331 is slidably inserted in the guide groove 311. Exemplarily, a vertical slot for the L-shaped rod 340 to slide vertically is opened on the side wall of the mounting seat 310.

[0046] After the arrangement is made in this way, when the position state of the evaporation hydrophilic section 110 needs to be adjusted, the adjustment handle 360 ​​is rotated to make the first bevel gear 370 drive the second bevel gear 380 to rotate, thereby making the threaded rod 320 rotate. Since the threaded sleeve 330 is threadedly sleeved on the threaded rod 320, when the threaded rod 320 rotates, it is also restricted by the guide block 331 inserted in the guide groove 311, and the threaded sleeve 330 moves along the axial direction of the threaded rod 320. When the threaded sleeve 330 moves vertically downward, it contacts the threaded rod 320. The ball 350 will also move vertically downward away from the bottom of the evaporation hydrophilic section 110, so that the bottom of the evaporation hydrophilic section 110 is no longer supported by the resistance ball 350 and is converted from a horizontally extended state to a tilted downward state under the action of its own gravity; similarly, when the threaded sleeve 330 moves vertically upward, the resistance ball 350 pushes the bottom wall of the evaporation hydrophilic section 110, pushing the evaporation hydrophilic section 110 from the tilted downward state to the horizontally extended state, thereby achieving the effect of more convenient adjustment of the state of the evaporation hydrophilic section 110.

[0047] In some embodiments, in combination Figure 4 , Fig. 9 The rotation limiting assembly 400 includes a first pipe section 410, a second pipe section 420, a lug 430 and a rotating rod 440. The lug 430 is arranged on both sides of the center of the end openings of the first pipe section 410 and the second pipe section 420 that are close to each other, and an opening is opened on the lug 430. The openings on two adjacent lugs 430 are arranged opposite to each other, and the rotating rod 440 is rotatably inserted into the openings of two adjacent lugs 430. The first pipe section 410 is connected to the end of the evaporation hydrophilic section 110, and the second pipe section 420 is connected to the end of the condensation hydrophobic section 120.

[0048] Exemplarily, a rotation gap 450 is formed between the first pipe segment 410 and the second pipe segment 420 and below the lug 430, and the width of the rotation gap 450 gradually increases from top to bottom along the radial direction of the first pipe segment 410; when the first pipe segment 410 and the second pipe segment 420 are axially parallel, the ends of the first pipe segment 410 and the second pipe segment 420 above the lug 430 fit together. Further, when the first pipe segment 410 and the second pipe segment 420 are axially parallel, the evaporation hydrophilic section 110 and the condensation hydrophobic section 120 are also in a horizontal state.

[0049] Exemplary, combined Figure 7 , Figure 8, the self-locking component 500 includes a magnet block 510, a moving iron block 520, a vertical rod 530 and a blocking rod 540. The first pipe section 410 and the second pipe section 420 are both axially provided with a sliding cavity for the moving iron block 520 to slide. The lower pipe wall of the second pipe section 420 is axially provided with a groove 421. One end of the vertical rod 530 is connected to the moving iron block 520, and the other end passes through the groove 421 and extends vertically downward. The blocking rod 540 is transversely arranged at the lower end of the vertical rod 530. The inner end walls of the first pipe section 410 and the second pipe section 420 that are away from each other are both provided with a magnet block 510, and the magnet block 510 can be magnetically adsorbed with the moving iron block 520; a jack for horizontal insertion of the blocking rod 540 is provided on the side wall of the mounting seat 310; wherein, when the self-locking component 500 is in the first state In this case, one end of the movable iron block 520 is separated from the magnet block 510 in the second pipe section 420, and the other end is fitted with the magnet block 510 in the first pipe section 410. At this time, a part of the movable iron block 520 is located in the sliding cavity of the first pipe section 410, and the other part is located in the sliding cavity of the second pipe section 420. The end of the blocking rod 540 away from the vertical rod 530 extends into the mounting seat 310 and is vertically fitted with the lower end wall of the threaded sleeve 330 to limit the vertical downward movement of the threaded sleeve 330; when the self-locking assembly 500 is in the second state, the movable iron block 520 is completely located in the sliding cavity of the second pipe section 420, and the movable iron block 520 is adsorbed with the magnet block 510 in the second pipe section 420, and at the same time, the end of the blocking rod 540 away from the vertical rod 530 is located outside the mounting seat 310.

[0050] After setting this up, Figure 7 , Figure 8Under the action of the first pipe section 410, the second pipe section 420 and the rotation gap 450, the first pipe section 410 and the second pipe section 420 will only bend downward at the rotation gap 450, but will not bend upward. This can ensure to a certain extent that when the evaporation hydrophilic section 110 moves upward tilted under the action of the adjustment component 300, the limit position of the upward movement of the evaporation hydrophilic section 110 is the position where the evaporation hydrophilic section 110 and the condensation hydrophobic section 120 are in a horizontal state. At this time, the ends of the first pipe section 410 and the second pipe section 420 above the lug 430 will be relatively fitted and cannot continue to rotate upward. On this basis, when it is necessary to lock the rotation limit assembly 400 so that the evaporation hydrophilic section 110 remains in a horizontal position with the condensation hydrophobic section 120, the vertical rod 530 is pushed horizontally, so that the moving iron block 520 moves horizontally in the sliding cavity of the second pipe section 420 and disengages from the magnet block 510 in the second pipe section 420, until part of the moving iron block 520 is inserted into the sliding cavity of the first pipe section 410, and the end of the moving iron block 520 is magnetically adsorbed to the magnet block 510 in the first pipe section 410. At this time, part of the moving iron block 520 is located in the sliding cavity of the first pipe section 410, and the other part is located in the sliding cavity of the second pipe section 420. Due to the restriction of the moving iron block 520, the first pipe section 410 and the second pipe section 420 cannot rotate at the rotation gap 450, and finally the first pipe section 410 and the second pipe section 420 are locked in a state of maintaining axial parallelism, and the evaporation hydrophilic section 110 is locked in a horizontal position with the condensation hydrophobic section 120.

[0051] At the same time, the blocking rod 540 will also move horizontally during the above process and enter into the mounting seat 310 through the insertion hole and vertically fit with the lower end wall of the threaded sleeve 330 to limit the vertical downward movement of the threaded sleeve 330. In this way, when the adjustment handle 360 ​​is rotated, the threaded sleeve 330 cannot move vertically downward due to the limitation of the blocking rod 540, thereby effectively locking the adjustment assembly 300.

[0052] Similarly, when the lock needs to be released, the vertical rod 530 is pushed back horizontally to allow the movable iron block 520 to disengage from the sliding cavity of the first pipe section 410 and completely enter the sliding cavity of the second pipe section 420. At the same time, during this process, the blocking rod 540 will also disengage from the mounting seat 310, thereby allowing the first pipe section 410 to rotate relative to the second pipe section 420, and the adjusting handle 360 ​​can normally drive the threaded sleeve 330 to move vertically downward on the threaded rod 320.

[0053] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0054] In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0055] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A solar-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination, characterized in that: include: A flat-plate heat pipe (100), wherein the flat-plate heat pipe (100) has a vacuum cavity inside, wherein a phase-change heat-conducting medium is filled in the vacuum cavity, wherein the flat-plate heat pipe (100) comprises an evaporation hydrophilic section (110) and a condensation hydrophobic section (120) which are connected to each other, wherein the evaporation hydrophilic section (110) can drive the phase-change heat-conducting medium to change from a liquid state to a gaseous state after absorbing heat from solar energy, so that the gaseous phase-change heat-conducting medium moves toward the condensation hydrophobic section (120), and the condensation hydrophobic section (120) can drive the phase-change heat-conducting medium to change from a gaseous state to a liquid state after the heat of the gaseous phase-change heat-conducting medium is released, so that the liquid phase-change heat-conducting medium flows toward the evaporation section; The heating box (200) is arranged on the upper surface of the condensation drain section (120), and the heating box (200) is used to fill seawater to be heated.

2. The solar-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination according to claim 1 is characterized in that: The inner surface of the evaporation hydrophilic section (110) is covered with a super hydrophilic layer (111), and the super hydrophilic layer (111) can drive the phase-change heat-conducting medium to spread or form beads on the inner surface of the evaporation hydrophilic section (110).

3. The solar-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination according to claim 2 is characterized in that: The super hydrophilic layer (111) is configured as a silicon dioxide coating.

4. The solar-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination according to claim 1 is characterized in that: The inner surface of the condensation hydrophobic section (120) is coated with a super hydrophobic layer (121), and the super hydrophobic layer (121) can drive the phase-change heat-conducting medium to form a liquid film on the inner surface of the condensation hydrophobic section (120).

5. The solar-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination according to claim 4 is characterized in that: The super hydrophobic layer (121) is configured as an organic silicone rubber layer.

6. The solar-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination according to any one of claims 1 to 5, characterized in that: The upper and lower inner walls of the flat plate heat pipe (100) are provided with a plurality of continuous raised portions (130) and recessed portions (140) along the width direction thereof, two adjacent recessed portions (140) are separated by a raised portion (130), and the recessed portions (140) form a groove body (141) extending along the length direction of the flat plate heat pipe (100), and the groove body (141) allows a gaseous or liquid phase-change heat-conducting medium to pass through.

7. The solar-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination according to claim 1 is characterized in that: The flat-plate heat pipe (100) further comprises a hose section (150), wherein the hose section (150) is connected between the evaporation hydrophilic section (110) and the condensation hydrophobic section (120), and the hose section (150) can be bent and deformed under the action of an external force, so that the evaporation hydrophilic section (110) is tilted downward relative to the condensation hydrophobic section (120).

8. The solar-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination according to claim 7 is characterized in that: It also comprises an adjustment component (300), a rotation limiting component (400) and a self-locking component (500), wherein the adjustment component (300) is installed below the evaporation hydrophilic section (110), and the adjustment component (300) is used to drive the evaporation hydrophilic section (110) to switch between a horizontally extended state and a tilted downward state; The rotation limit assembly (400) is disposed between the evaporation hydrophilic section (110) and the condensation hydrophobic section (120) and is located outside the hose section (150); the rotation limit assembly (400) is used to limit the evaporation hydrophilic section (110) from continuing to tilt upwards while maintaining a horizontal state with the condensation hydrophobic section (120), and at the same time limit a maximum rotation tilt angle of the evaporation hydrophilic section (110) tilting downwards; The self-locking component (500) is arranged between the adjusting component (300) and the rotation limiting component (400), and the self-locking component (500) has a first state and a second state, wherein when the self-locking component (500) is in the first state, the self-locking component (500) locks the rotation limiting component (400) so that the evaporation hydrophilic section (110) is kept in a horizontal position with the condensation hydrophobic section (120), and simultaneously locks the operation of the adjusting component (300); when the self-locking component (500) is in the second state, the self-locking component (500) simultaneously unlocks the adjusting component (300) and the rotation limiting component (400), so that the adjusting component (300) can operate normally and the rotation limiting component (400) can rotate normally.

9. The solar-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination according to claim 8, characterized in that: The adjustment assembly (300) comprises a mounting seat (310), a threaded rod (320), a threaded sleeve (330), an L-shaped rod (340), a contact ball (350), an adjustment handle (360), a first bevel gear (370) and a second bevel gear (380); wherein: The mounting seat (310) is mounted on the ground below the evaporation hydrophilic section (110); the threaded rod (320) is vertically rotatably mounted in the mounting seat (310); one end of the adjustment handle (360) is rotatably mounted on the mounting seat (310); the first bevel gear (370) is coaxially mounted on one end of the adjustment handle (360) close to the threaded rod (320); the second bevel gear (380) is coaxially mounted on the threaded rod (320); and the first bevel gear (370) is meshed with the second bevel gear (380); The threaded sleeve (330) is threadedly sleeved on the threaded rod (320); a portion of the rod section of the L-shaped rod (340) is connected to the threaded sleeve (330), and another portion of the rod section extends vertically upward; the abutment ball (350) is rotatably disposed on the top of the other portion of the rod section of the L-shaped rod (340) and is used to roll against the bottom wall of the evaporation hydrophilic section (110); a guide block (331) is provided on the threaded sleeve (330); a guide groove (311) is vertically provided in the mounting seat (310); and at least a portion of the guide block (331) is slidably inserted in the guide groove (311).

10. The solar-powered non-powered micro-groove flat-plate superconducting heat pipe heating device for seawater desalination according to claim 9, characterized in that: The rotation limiting assembly (400) comprises a first pipe section (410), a second pipe section (420), a lug (430) and a rotating rod (440); the lug (430) is arranged on both sides of the center of the end openings of the first pipe section (410) and the second pipe section (420) which are close to each other, and the lug (430) is provided with an opening, the openings on two adjacent lugs (430) are arranged opposite to each other, and the rotating rod (440) is rotatably inserted into the openings of two adjacent lugs (430); the first pipe section (410) is connected to the end of the evaporation hydrophilic section (110), and the second pipe section (420) is connected to the end of the condensation hydrophobic section (120); A rotation gap (450) is formed between the first pipe section (410) and the second pipe section (420) and below the lug (430), and the width of the rotation gap (450) gradually increases from top to bottom along the radial direction of the first pipe section (410); when the first pipe section (410) and the second pipe section (420) are axially parallel, the ends of the first pipe section (410) and the second pipe section (420) above the lug (430) fit together; The self-locking assembly (500) comprises a magnet block (510), a movable iron block (520), a vertical rod (530) and a blocking rod (540); a sliding cavity for sliding the movable iron block (520) is axially opened in the first pipe section (410) and the second pipe section (420); a groove (421) is axially opened in the lower pipe wall of the second pipe section (420); one end of the vertical rod (530) is connected to the movable iron block (520), and the other end passes through the groove (421) and then extends vertically downward; the blocking rod (540) is transversely arranged at the lower end of the vertical rod (530); the magnet block (510) is arranged on the inner end walls of the first pipe section (410) and the second pipe section (420) which are away from each other, and the magnet block (510) can be magnetically adsorbed to the movable iron block (520); wherein, When the self-locking assembly (500) is in the first state, one end of the movable iron block (520) is separated from the magnet block (510) in the second pipe section (420), and the other end is in contact with the magnet block (510) in the first pipe section (410). At this time, a part of the movable iron block (520) is located in the sliding cavity of the first pipe section (410), and the other part is located in the sliding cavity of the second pipe section (420). The end of the blocking rod (540) away from the vertical rod (530) extends into the mounting seat ( 310) and vertically fits with the lower end wall of the threaded sleeve (330) to limit the vertical downward movement of the threaded sleeve (330); when the self-locking assembly (500) is in the second state, the movable iron block (520) is completely located in the sliding cavity of the second pipe section (420), and the movable iron block (520) is attracted to the magnet block (510) in the second pipe section (420), and at the same time, the end of the blocking rod (540) away from the vertical rod (530) is located outside the mounting seat (310).

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