A device for enhancing cooling of the landing section of submarine cable by atomization-promoted phase change

Abstract

The present invention relates to the field of submarine cable cooling technology, and more specifically, to an atomization-promoted phase-change submarine cable landing section enhanced cooling device, comprising: an evaporation system, the evaporation system comprises a water tank for containing liquid water, and two tank surfaces of the water tank are provided with cable perforations for passing submarine cables; an atomization system, the atomization system is installed in the water tank to atomize the liquid water contained in the water tank, and the floating particles obtained by atomization cool the submarine cable passed through the cable perforations; a condensation reflux system, the condensation inlet at the upper end of the condensation reflux system is connected to the water vapor outlet at the upper end of the water tank, so as to collect and condense the water vapor generated after the floating particles cool the submarine cable. The present invention utilizes the phase change heat transfer principle of water, and when working, it changes from liquid to gas and then to liquid, and circulates repeatedly to cool the surface of the submarine cable. The present invention requires less external energy supply, which can significantly reduce the operation and maintenance cost.

Description

Technical Field

[0001] The invention relates to the technical field of submarine cable cooling, and more specifically to an atomization-promoted phase-change submarine cable landing section enhanced cooling device. Background Art

[0002] Submarine cable transmission has the advantages of long-distance, large-capacity, and low-loss cross-sea transmission of electric energy. It is an effective way to realize the power supply of my country's islands or offshore platforms, the grid connection of offshore wind power, and the international interconnection of power grids. Submarine cables are in the marine environment, and their operation is closely related to marine climate conditions. The laying environment of the seabed is harsh, the cable line span is large, and the marine hydrology, geology, and climate of the passing area are quite different, resulting in variable parameters such as its operating environment. Cable insulation materials have a long-term maximum allowable operating temperature, and the current carrying capacity of the cable line is limited by the operating temperature of the main insulation of the landing section. According to the laying environment, submarine cables are mainly divided into submarine sections, land landing sections, and air sections. Among them, the land landing section has the worst heat dissipation conditions for cables, which is the key section that limits the current carrying capacity of submarine cables. The land landing section of submarine cables not only limits the current carrying capacity, but also accelerates insulation aging, reduces the operating life, and increases the possibility of electrical and thermal breakdown of submarine cables when the cables work under long-term excessive heating. Therefore, it is very necessary to cool the landing section of submarine cables.

[0003] At present, the cooling of the submarine cable landing section in engineering mainly involves laying cooling water pipes near the submarine cable landing section on land, using special backfill soil, stripping the armor of the submarine cable landing section on land, etc. to increase the current carrying capacity of the submarine cable landing section.

[0004] The main problem with the method of laying cooling water pipes near the landing section of the coastal cable is that the landing section is often remote, and an independent water source needs to be built for laying cooling water pipes, and the cooling water level and water volume need to be monitored in real time. The cooling water pipes are difficult to operate and maintain, and high requirements are placed on the power supply and equipment of the cooling water pump.

[0005] The material cost of the special backfill method is too high and the cooling effect is limited. The method of stripping the submarine cable armor will reduce the protection ability of the submarine cable. There are also some forced water cooling devices whose principles are similar to the above water cooling methods. They require continuous energy supply from water pumps, which consumes a lot of costs. Once the water pump is damaged, the device will not work, and the operation and maintenance cost is high. Summary of the invention

[0006] The purpose of the present invention is to provide an atomization-promoted phase change submarine cable landing section enhanced cooling device, which can effectively solve the problems in the prior art.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] An atomization-promoted phase change submarine cable landing section enhanced cooling device, comprising:

[0009] An evaporation system, the evaporation system comprises a water tank for containing liquid water, and two sides of the water tank are provided with cable holes for passing submarine cables, for installing submarine cables;

[0010] Atomization system, which is installed in the water tank to atomize the liquid water in the water tank, and to cool and dissipate the heat of the submarine cable passing through the cable perforation with the floating particles obtained by atomization;

[0011] A condensation reflux system, wherein the condensation inlet at the upper end of the condensation reflux system is connected to the water vapor outlet at the upper end of the water tank, so as to collect and condense the water vapor generated after the floating particles cool and dissipate the heat of the submarine cable; the condensation outlet at the lower end of the condensation reflux system is connected to the liquid water inlet at the lower end of the water tank, so that the liquid water generated after the water vapor condensation process flows back into the water tank;

[0012] Energy recovery system: one end of the energy recovery system is connected to the condensation reflux system to convert the kinetic energy of water vapor into mechanical energy, and then convert the mechanical energy into electrical energy to power the atomization system.

[0013] Optionally, two cable through holes are arranged opposite to each other at the central positions of two box surfaces of the water tank.

[0014] Optionally, the two cable through holes are relatively arranged on the front and rear side surfaces of the water tank or on the left and right side surfaces of the water tank.

[0015] Optionally, the height of the cable penetration hole is higher than the height of the surface of the liquid water contained in the water tank.

[0016] Optionally, a first connecting hole is provided on the side of the water tank, and the height position of the first connecting hole is higher than the height position of the cable penetration hole; the first connecting hole is connected to the condensation inlet at the upper end of the condensation reflux system.

[0017] Optionally, a second connecting hole is provided on the side of the water tank, and the height position of the second connecting hole is lower than the height position of the cable penetration hole; the second connecting hole is connected to the condensation outlet at the lower end of the condensation reflux system.

[0018] Optionally, the condensation reflux system includes a cooling pipe, one end of the cooling pipe is connected to and communicated with the first connecting hole, and the other end of the cooling pipe is connected to and communicated with the second connecting hole.

[0019] Optionally, the cooling pipe is a C-type pipe structure.

[0020] Optionally, heat dissipation fins are provided on the outer tube surface of the cooling pipe.

[0021] Optionally, a plurality of cooling pipes are equidistantly connected to two opposite sides of the water tank.

[0022] Optionally, a plurality of the cooling pipes are arranged along the axial direction of the cable penetration hole.

[0023] Optionally, the atomization system includes: piezoelectric ultrasonic vibrators arranged in an array on the inner bottom surface of the water tank, so as to atomize the liquid water in the water tank through the piezoelectric ultrasonic vibrators.

[0024] Optionally, the atomization-promoted phase-change submarine cable landing section enhanced cooling device also includes an energy recovery system; the energy recovery system includes: a transmission device, a generator and a high-frequency circuit; the transmission device includes a fan blade rotatably engaged in the cooling pipe and a support connecting rod with one end fixed to the fan blade, the middle part of the support connecting rod is sealed and rotatably engaged on the pipe wall of the cooling pipe, and the other end of the support connecting rod is transmission-connected to the input shaft of the generator, and the generator is electrically connected to the atomization system through a high-frequency circuit to convert the mechanical energy generated by the operation of the transmission device and the generator into electrical energy and power the atomization system.

[0025] Optionally, the fan blade is arranged close to the connection between the cooling pipe and the first connecting hole.

[0026] Beneficial effects of the present invention:

[0027] The invention discloses an enhanced cooling device for the landing section of a submarine cable promoted by atomization phase change. The evaporation system thereof is provided with a water tank for containing liquid water. Two sides of the water tank are provided with cable through-holes for passing submarine cables, which are used for installing submarine cables. The water tank is provided with an atomization system, so as to atomize the liquid water contained in the water tank, so as to cool and dissipate the submarine cable passed through the cable through-holes by floating particles obtained by atomization. When the floating particles obtained by atomization come into contact with the landing section of the submarine cable, the floating particles are evaporated into water vapor, so as to play a role in cooling and dissipating the heat. The invention is provided with a condensation reflux system, so as to collect and condense the water vapor generated after the floating particles cool and dissipate the heat of the submarine cable, and to make the liquid water generated after the water vapor condenses and flows back into the water tank. The invention utilizes the phase change heat transfer principle of water, and when working, it changes from liquid to gas and then to liquid, and circulates repeatedly, so as to effectively cool the surface of the submarine cable. The invention requires less external energy supply, and can significantly reduce the operation and maintenance cost.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are 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.

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a schematic diagram of the connection of various systems of the cross section of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the energy recovery system of the present invention;

[0033] Figure 4 It is a schematic diagram of the working principle of the present invention;

[0034] Figure 5 The structure of the cable conduit device and the gathering plate of the present invention is schematically shown. Figure 1 ;

[0035] Figure 6 The structure of the cable conduit device and the gathering plate of the present invention is schematically shown. Figure 2 ;

[0036] Figure 7 It is a structural schematic diagram of a gathering plate of the present invention;

[0037] Figure 8 It is a structural schematic diagram of the lifting slide mechanism of the present invention;

[0038] Fig. 9 A schematic diagram of the structure of a cable conduit mechanism provided by an embodiment of the present invention;

[0039] Fig.10 A schematic structural diagram of a cable duct mechanism provided in an embodiment of the present invention.

[0040] Icons: atomization system 1; piezoelectric ultrasonic vibrator 11; evaporation system 2; water tank 21; cable perforation 211; first connecting hole 212; second connecting hole 213; condensation reflux system 3; cooling pipe 31; energy recovery system 4; transmission device 41; generator 42; fan blade 411; supporting connecting rod 412; high-frequency circuit 43; cable duct device 5; gathering plate 6; two-way control screw 7; hanging slide mechanism 8; slide body 81; two-way screw 82; sliding baffle 83; sliding plug 84; tensioning spring 85; cable duct mechanism 9; fixed duct 91; movable duct 92; conical ring 93; sliding column 94; compression spring 95; active rack 96; gear 97; driven rack 98; arc clamp ring 99. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0043] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0045] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that can be implemented in this application, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this application without affecting the effects that can be produced by this application and the purposes that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of narration, and are not used to limit the scope of the implementation of this application. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of this application without substantial change in the technical content.

[0046] The following is combined with Figure 1-10 The present invention is described in further detail.

[0047] like Figure 1-10 As shown, an atomization-promoted phase change submarine cable landing section enhanced cooling device comprises:

[0048] The evaporation system 2 includes a water tank 21 for containing liquid water, and two sides of the water tank 21 are provided with cable through holes 211 for passing submarine cables;

[0049] Atomizing system 1, which is installed in the water tank 21 to atomize the liquid water in the water tank 21, and to cool and dissipate the submarine cable passing through the cable through-hole 211 with the floating particles obtained by atomization;

[0050] The condensation reflux system 3 has a condensation inlet at the upper end connected to a water vapor outlet at the upper end of the water tank 21, so as to collect and condense the water vapor generated after the floating particles cool and dissipate the heat of the submarine cable; the condensation outlet at the lower end of the condensation reflux system 3 is connected to a liquid water inlet at the lower end of the water tank 21, so that the liquid water generated after the water vapor condensation process flows back into the water tank 21;

[0051] The energy recovery system 4 has one end connected to the condensation reflux system 3 to convert the kinetic energy of the water vapor into mechanical energy, and then convert the mechanical energy into electrical energy to power the atomization system 1 .

[0052] The invention discloses an atomization-promoted phase-change submarine cable landing section enhanced cooling device, which is used for cooling and heat dissipation treatment of the submarine cable landing section. Two cable through-holes 211 are provided on the water tank 21 for installing the submarine cable. The water tank 21 is provided with an atomization system 1. After the atomization system 1 is started, the liquid water contained in the water tank 21 can be atomized, so that the submarine cable passing through the cable through-holes 211 is cooled and dissipated by the floating particles obtained by atomization. When the floating particles obtained by atomization come into contact with the submarine cable, the floating particles obtained by atomization are evaporated due to the heat of the submarine cable, and the floating particles obtained by atomization are converted into water vapor, so as to realize the first phase change of water, thereby absorbing the heat of the submarine cable line, and realizing cooling and heat dissipation treatment of the submarine cable. The boiling point of water at one atmosphere is 100°C. When the submarine cable landing section is working, the outer surface temperature is about 70°C, which is close to the boiling point of water, and the liquid water has It is fully atomized, and when the water is heated, it can fully change phase to realize circulation; after the floating particles are converted into water vapor, the water vapor rises and enters the condensation inlet at the upper end of the condensation reflux system 3 through the water vapor outlet at the upper end of the water tank 21, so that the water vapor is collected and condensed by the condensation reflux system 3, and the water vapor generated in the liquefied evaporation system 2 is liquefied, and the heat is transferred to the outside at the same time to realize heat dissipation treatment; compared with the traditional forced cooling method, the atomization-promoted phase change submarine cable landing section enhanced cooling device of the present invention has energy-saving effect. The present invention is mounted on the outside of the submarine cable and has a simple structure. Considering the complexity and randomness of the laying environment of the submarine cable transportation landing section, it can achieve efficient and safe cooling effect. Compared with previous cooling devices, it has broader application prospects. Water, as the liquid working fluid of the present invention, can be directly used, and water resources are abundant and the cost is low, which can continuously provide cooling liquid for the device.

[0053] The two cable through holes 211 are located at the center of the two box surfaces of the water tank 21 .

[0054] The two cable through holes 211 are relatively arranged on the front and rear side surfaces of the water tank 21 or on the left and right side surfaces of the water tank 21. The two cable through holes 211 are symmetrically arranged for better installation of the submarine cable without bending the submarine cable.

[0055] The height of the cable through hole 211 is higher than the height of the liquid water level in the water tank 21, so as to prevent the liquid water in the water tank 21 from overflowing.

[0056] A first connecting hole 212 is provided on the side of the water tank 21 . The height of the first connecting hole 212 is higher than the height of the cable through hole 211 . The first connecting hole 212 is connected to the condensation inlet at the upper end of the condensation reflux system 3 .

[0057] A second connecting hole 213 is provided on the side of the water tank 21 , and the height of the second connecting hole 213 is lower than the height of the cable through hole 211 ; the second connecting hole 213 is connected to the condensation outlet at the lower end of the condensation reflux system 3 .

[0058] The condensation reflux system 3 includes a cooling pipe 31 , one end of the cooling pipe 31 is connected to and communicates with the first connecting hole 212 , and the other end of the cooling pipe 31 is connected to and communicates with the second connecting hole 213 .

[0059] The cooling pipe 31 is a C-shaped pipe structure. The C-shaped pipe structure is symmetrical and arranged equidistantly along the side surface of the water tank 21. It is installed outside the water tank 21 to liquefy the water vapor generated in the evaporation system 2 and transfer heat to the outside.

[0060] The outer tube surface of the cooling pipe 31 is provided with heat dissipation fins, which is beneficial to improving the cooling and heat dissipation effect.

[0061] The cooling pipe 31 has a thin wall surface and high heat exchange efficiency with the external air, thereby ensuring that the water vapor undergoes a sufficient phase change.

[0062] A plurality of cooling pipes 31 are equidistantly connected to two opposite sides of the water tank 21 .

[0063] The plurality of cooling pipes 31 are arranged in an array along the axial direction of the cable through hole 211 .

[0064] The bottom of the water tank 21 is provided with a third communication hole for the wire to pass through.

[0065] The atomization system includes: piezoelectric ultrasonic vibrators 11 arranged in an array on the inner bottom surface of the water tank 21, so as to atomize the liquid water in the water tank 21 through the piezoelectric ultrasonic vibrators 11. The piezoelectric ultrasonic vibrators 11 are composed of a stainless steel sheet, a piezoelectric ceramic ring, a shockproof silicone ring, a front waterproof solder joint and a back waterproof solder joint, and are used to atomize the liquid water in the device, improve the phase change efficiency of the liquid water, and thus improve the cooling efficiency of the device; compared with other ultrasonic generators, the piezoelectric ultrasonic vibrators 11 have lower costs and simpler structures, and only require two piezoelectric ceramic rings and one stainless steel sheet to achieve the function, and the required energy consumption is low.

[0066] The submarine cable passes through the center of the water tank 21. The water tank 21 is mainly used to conduct the heat generated when the submarine cable is working. The upper part of the water tank is air and the lower part is water. The piezoelectric ultrasonic vibrator 11 is laid at the bottom of the water tank 21, and mainly plays the role of atomizing water. After the water is atomized, a water mist with a large gap is formed. When it is sprayed upward and passes through the submarine cable, it is easily evaporated by heat, thereby improving the phase change efficiency of liquid water and ensuring the efficiency of phase change heat transfer. The cooling pipe 31 cools the water vapor entering from the water tank 21, ensuring that the water vapor can be effectively cooled and finally liquefied to form liquid water, and the liquid water finally returns to the water tank 21, realizing the phase change heat transfer cycle of water. The length of the landing section connected to the device is designed to be 3-10m.

[0067] The atomization-promoted phase-change submarine cable landing section enhanced cooling device also includes an energy recovery system 4 for recovering the mechanical energy generated by the device and supplying energy to the atomization system 1; the energy recovery system 4 includes: a transmission device 41, a generator 42 and a high-frequency circuit 43; the transmission device 41 includes a fan blade 411 rotatably engaged in the cooling pipe 31 and a support connecting rod 412 fixed to the fan blade 411 at one end, the middle part of the support connecting rod 412 is sealed and rotatably engaged on the pipe wall of the cooling pipe 31, and the other end of the support connecting rod 412 is transmission-connected to the input shaft of the generator 42, and the generator 42 is electrically connected to the atomization system 1 through the high-frequency circuit 43 to convert the mechanical energy generated by the operation of the transmission device 41 and the generator 42 into electrical energy and supply power to the atomization system 1.

[0068] In the generator 42, an induction generator is arranged, and the fan blades 411 are light in weight. When the present invention is working, the water vapor drives the fan blades 411 to rotate, and the rotation of the fan blades 411 drives the supporting connecting rods 412 to rotate. When the supporting connecting rods 412 rotate, the transmission drives the input shaft of the generator 42 to rotate, thereby converting the mechanical energy generated by the movement of the water vapor into the mechanical energy of the fan blades 411, and finally into the electrical energy of the high-frequency circuit 43, realizing a self-powered cooling method.

[0069] Figure 4 It is a schematic diagram of the working principle of the present invention, Figure 4The arrow in the middle is a schematic diagram of the water phase change heat cycle of the liquid water in the water tank 21. When the submarine cable landing section of the present invention is working, the high-frequency circuit 43 is turned on, and high-frequency electricity is passed through both ends of the piezoelectric ultrasonic vibrator 11. The piezoelectric ultrasonic vibrator 11 vibrates, and the water is beaten into micron-sized floating particles. The water mist is sprayed toward the submarine cable in the water tank 21. When the submarine cable landing section is working, the outer surface temperature is very high, releasing a large amount of heat. The water mist near the submarine cable in the water tank 21 absorbs heat energy and produces a phase change, from liquid water to water vapor. The density of water vapor is less than that of air, so it continues to rise. , rises to the upper end interface of the cooling pipe 31 and enters the cooling pipe 31 under the action of air pressure. A small part of the water vapor has been cooled and phase-changed into liquid water at the upper end of the cooling pipe 31. When the water vapor and liquid water at the upper end of the cooling pipe 31 reach the inside of the cooling pipe 31, they fall down under the action of gravity. Since the wall of the cooling pipe 31 is thin, the water vapor and liquid water are fully condensed therein. When they reach the lower end interface of the cooling pipe 31, they have all been converted into liquid water. The cooling pipe 31 is connected to the water tank 21. Finally, the liquid water formed by the secondary phase change flows back to the water tank 21, completing the water phase change heat cycle of the device.

[0070] like Figure 5-10 As shown, the atomization-promoted phase-change submarine cable landing section enhanced cooling device also includes a cable duct device 5 and a gathering plate 6 installed in the water tank 21; the cable duct device 5 includes a two-way control screw 7, a hanging slide mechanism 8 and a cable duct mechanism 9; the two ends of the two-way control screw 7 are sealed and rotated on the two side surfaces of the water tank 21, and the axis of the two-way control screw 7 is parallel to the axis of the cable through-hole 211; the two-way control screw 7 is threadedly matched with two relatively arranged hanging slide mechanisms 8, and the two hanging slide mechanisms 8 slide relatively on the horizontal plates above the two gathering plates 6; the inclined plates below the two gathering plates 6 are fixed on the other two side surfaces of the water tank 21, and the inclined plates of the two gathering plates 6 form a triangular gas gathering structure; the horizontal plates of the two gathering plates 6 are located above the cable through-hole 211 and below the two-way control screw 7; the two hanging slide mechanisms 8 are respectively detachably connected to a cable duct mechanism 9, and the two cable duct mechanisms 9 are relatively arranged on the inner sides of the two cable through-holes 211 of the water tank 21.

[0071] The cable conduit device 5 is used to support and limit the two ends of the submarine cable that passes through the water tank 21, thereby improving the internal stability of the submarine cable in the present invention and sealing the gap between the submarine cable and the cable perforation 211 to a certain extent, thereby improving the sealing of the internal water tank 21 of the present invention, preventing liquid water from evaporating and flowing out, and ensuring the circulation reflux effect; when the cable conduit device 5 is used, it can be passed through the cable of the submarine cable located inside the water tank 21 through two cable conduit mechanisms 9, and then the positions of the two cable conduit mechanisms 9 can be adjusted by rotating the two-way control screw 7. Since one end of the two-way control screw 7 is a left-handed thread and the other end is a right-handed thread, the rotation of the two-way control screw 7 is When the bidirectional control screw 7 is moved, the two hanging slide mechanisms 8 can be driven to slide toward or away from each other on the horizontal plate above the two gathering plates 6. The two hanging slide mechanisms 8 drive the two cable duct mechanisms 9 to move inward or outward synchronously, which is convenient for controlling the outer ends of the two cable duct mechanisms 9 to be inserted into the gap between the submarine cable and the cable perforation 211, thereby improving the sealing effect; the two gathering plates 6 form a triangular gathering structure, which is convenient for the piezoelectric ultrasonic vibrator 11 to beat the water into micron-sized floating particles, and the water mist is sprayed toward the submarine cable in the water tank 21 under the gathering effect of the two gathering plates 6, thereby improving the contact effect between the water mist and the submarine cable, and finally improving the cooling and heat dissipation effect.

[0072] The lifting slide mechanism 8 includes a slide body 81, a bidirectional screw 82, a sliding baffle 83, a sliding plug rod 84 and a tensioning spring 85; the slide body 81 slides on the horizontal plates of the two gathering plates 6 through the side sliding grooves on both sides; the upper end of the slide body 81 is threadedly engaged with the bidirectional control screw 7, and the lower end of the slide body 81 is rotatably connected to the two ends of the bidirectional screw 82, and the axis of the bidirectional screw 82 is perpendicular to the axis of the bidirectional control screw 7; the middle part of the bidirectional screw 82 is threadedly connected to two oppositely arranged sliding baffles 83, and the two sliding baffles 83 slide relatively on the bottom surface of the slide body 81, and the inner ends of the two sliding baffles 83 are fixed with two sliding plug rods 84, so as to be plugged into the cable duct mechanism 9 through the sliding plug rod 84; a tensioning spring 85 is sleeved on the bidirectional screw 82, and the tensioning spring 85 is located between the two sliding baffles 83. The slide body 81 inside the hanging slide mechanism 8 can slide on the horizontal plate above the two gathering plates 6 under the drive of the two-way control screw 7. The hanging slide mechanism 8 and the cable duct mechanism 9 are detachable connection structures. When the cable duct mechanism 9 needs to be removed or installed, the two-way screw 82 can be rotated for control. Rotating the two-way screw 82 can change its contact position with the two sliding baffles 83, thereby driving the two sliding baffles 83 to slide toward or away from each other on the bottom surface of the slide body 81. The two sliding baffles 83 drive the two sliding plug rods 84 to move toward or away from each other, thereby realizing the plug-in fixation of the cable duct mechanism 9 or the separation from the cable duct mechanism 9.

[0073] The cable conduit mechanism 9 comprises a fixed conduit 91, a fixed block, a movable conduit 92, a movable block, a conical ring 93, a sliding column 94, a compression spring 95, an active rack 96, a gear 97, a driven rack 98 and an arc clamp ring 99; two sliding baffles 83 are relatively blocked on both sides of the fixed seat at the top of the fixed conduit 91, and the sliding plug rods 84 at the inner ends of the two sliding baffles 83 are relatively plugged into the plug holes on both sides of the fixed seat; the outer end of the fixed conduit 91 slides with the movable conduit 92, and the outer end of the movable conduit 92 is fixed with a conical ring 93, the minimum diameter of the conical ring 93 is smaller than the diameter of the cable through hole 211, and the maximum diameter of the conical ring 93 is larger than the diameter of the cable through hole 211, and two movable blocks are relatively fixed on both sides of the movable conduit 92, and the inner ends of the two movable blocks are relatively fixed. A sliding column 94 is fixed respectively, and the middle parts of the two sliding columns 94 slide on two fixed blocks, and the two fixed blocks are relatively fixed on both sides of the fixed guide tube 91. A compression spring 95 is sleeved on each sliding column 94, and the compression spring 95 is located between the fixed block and the movable block; an active rack 96 is fixed to the inner end of the two sliding columns 94 respectively, and the inner sides of the two active racks 96 are meshed one by one with two gears 97 rotatably connected to the two sides of the fixed guide tube 91, and the two gears 97 are meshed one by one with two driven racks 98 slidingly matched in the rectangular holes on the side of the fixed guide tube 91, and the driven racks 98 are arranged vertically with the active racks 96; the inner ends of the two driven racks 98 are fixedly connected one by one with two arc-shaped clamp rings 99 that are relatively matched in the arc-shaped grooves on the inner side of the fixed guide tube 91.

[0074] The fixed conduit 91 inside the cable conduit mechanism 9 is used to guide the submarine cable. The submarine cable is inserted into the fixed conduit 91, the movable conduit 92 and the conical ring 93. The conical ring 93 is made of rubber material with a certain elasticity, which is convenient for plugging into the gap between the submarine cable and the cable through-hole 211 to improve the sealing effect. After the two-way control screw 7 controls the two cable conduit mechanisms 9 to move away from each other and controls the conical rings 93 of the two cable conduit mechanisms 9 to be plugged into the gap between the submarine cable and the cable through-hole 211, as the two-way control screw 7 continues to rotate , which can drive the fixed conduit 91 to continue to move outward, thereby controlling the fixed conduit 91 to slide in the direction of the tapered ring 93 in the movable conduit 92. At this time, while the fixed block compresses the compression spring 95, the gear 97 moves in the direction of the tapered ring 93 driven by the fixed conduit 91. The gear 97 meshes with the active rack 96, thereby rotating around its own axis, and the meshing transmission drives the driven rack 98 to slide toward the center of the fixed conduit 91, thereby driving the arc clamp ring 99 to clamp the submarine cable more stably, thereby improving the limiting effect of the submarine cable.

[0075] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to this application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

[0076] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants 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 statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

Claims

1. A device for enhancing cooling of the landing section of a submarine cable by atomization-promoting phase change, characterized in that: include: An evaporation system (2), the evaporation system (2) comprising a water tank (21) for containing liquid water; An atomization system (1) is used to atomize liquid water contained in a water tank (21), and to use floating particles obtained by atomization to cool and dissipate heat from a submarine cable passing through the water tank (21); A condensation reflux system (3) is used to collect and condense water vapor generated after the floating particles cool the submarine cable, and to reflux liquid water generated after the condensation of the water vapor into the water tank (21); An energy recovery system (4), one end of the energy recovery system (4) is connected to the condensation reflux system (3) to convert the kinetic energy of the water vapor into mechanical energy, and then convert the mechanical energy into electrical energy to power the atomization system (1); Two cable through holes (211) are arranged opposite to each other at the central positions of two box surfaces of the water tank (21); The two cable through holes (211) are arranged oppositely on the front and rear side surfaces of the water tank (21) or on the left and right side surfaces of the water tank (21); The height of the cable through hole (211) is higher than the height of the surface of the liquid water contained in the water tank (21); A first communication hole (212) is provided on the side of the water tank (21), and the height of the first communication hole (212) is higher than the height of the cable through hole (211); the first communication hole (212) is connected to the condensation inlet at the upper end of the condensation reflux system (3); A second connecting hole (213) is provided on the side of the water tank (21), and the height of the second connecting hole (213) is lower than the height of the cable through hole (211); the second connecting hole (213) is connected to the condensation outlet at the lower end of the condensation reflux system (3); The condensation reflux system (3) comprises a cooling pipe (31), one end of the cooling pipe (31) is connected to and communicates with the first communication hole (212), and the other end of the cooling pipe (31) is connected to and communicates with the second communication hole (213); The energy recovery system (4) comprises: a transmission device (41), a generator (42) and a high-frequency circuit (43); the transmission device (41) comprises a fan blade (411) rotatably engaged in the cooling pipe (31) and a support connecting rod (412) with one end fixed to the fan blade (411); the middle part of the support connecting rod (412) is sealed and rotatably engaged on the pipe wall of the cooling pipe (31); the other end of the support connecting rod (412) is transmission-connected to the input shaft of the generator (42); the generator (42) is electrically connected to the atomization system (1) through the high-frequency circuit (43) so as to convert mechanical energy generated by the operation of the transmission device (41) and the generator (42) into electrical energy and supply power to the atomization system (1); The fan blade (411) is arranged close to the connection between the cooling pipe (31) and the first connecting hole (212).

2. The device for enhancing cooling of the landing section of a submarine cable by atomization-promoting phase change according to claim 1 is characterized in that: The cooling pipeline (31) is a C-shaped pipeline structure.

3. The device for enhancing cooling of the landing section of a submarine cable by atomization-promoting phase change according to claim 1 is characterized in that: The outer tube surface of the cooling pipe (31) is provided with heat dissipation fins.

4. The device for enhancing cooling of the landing section of a submarine cable by atomization-promoting phase change according to claim 1 is characterized in that: A plurality of cooling pipes (31) are connected to two opposite sides of the water tank (21) at equal distances; the plurality of cooling pipes (31) are arranged in an axial direction of the cable through hole (211).

5. The device for enhanced cooling of the landing section of a submarine cable by atomization-promoted phase change according to claim 1 is characterized in that: The atomization system (1) comprises: piezoelectric ultrasonic vibrators (11) arranged in an array on the inner bottom surface of a water tank (21), so as to atomize liquid water in the water tank (21) through the piezoelectric ultrasonic vibrators (11).

6. The device for enhanced cooling of the landing section of a submarine cable by atomization-promoted phase change according to claim 1 is characterized in that: It also includes a cable conduit device (5) and a gathering plate (6) installed in the water tank (21); The cable conduit device (5) comprises a bidirectional control screw (7), a hanging slide mechanism (8) and a cable conduit mechanism (9); the two ends of the bidirectional control screw (7) are sealed and rotated on the two side surfaces of the water tank (21); the threads on the bidirectional control screw (7) are engaged with two hanging slide mechanisms (8) arranged opposite to each other; the two hanging slide mechanisms (8) slide relatively on the horizontal plates above the two gathering plates (6); and one cable conduit mechanism (9) is detachably connected to each of the two hanging slide mechanisms (8); The transverse plates of the two gathering plates (6) are located above the cable through-hole (211) and below the bidirectional control screw (7); The two cable conduit mechanisms (9) are arranged opposite to each other on the inner sides of the two cable through holes (211) of the water tank (21).

7. The device for enhanced cooling of the landing section of a submarine cable by atomization-promoted phase change according to claim 6 is characterized in that: The axis of the bidirectional control screw (7) is parallel to the axis of the cable through hole (211).

8. The device for enhanced cooling of the landing section of a submarine cable by atomization-promoted phase change according to claim 7 is characterized in that: The inclined plates below the two gathering plates (6) are fixed to the other two side surfaces of the water tank (21).

9. The device for enhanced cooling of the landing section of a submarine cable by atomization-promoted phase change according to claim 8, characterized in that: The inclined plates of the two gathering plates (6) form a triangular gas gathering structure.

10. The device for enhanced cooling of the landing section of a submarine cable by atomization-promoted phase change according to claim 6, characterized in that: The hanging sliding seat mechanism (8) comprises a sliding seat body (81), a bidirectional screw (82), a sliding baffle (83), a sliding plug rod (84) and a tensioning spring (85); the sliding seat body (81) slides on the horizontal plates of the two gathering plates (6) through the side sliding grooves on both sides; the upper end of the sliding seat body (81) is threadedly engaged with the bidirectional control screw (7), and the lower end of the sliding seat body (81) is rotatably connected to the two ends of the bidirectional screw (82), and the axis of the bidirectional screw (82) is perpendicular to the axis of the bidirectional control screw (7); the middle part of the bidirectional screw (82) is threadedly connected to two oppositely arranged sliding baffles (83), and the two sliding baffles (83) slide relatively on the bottom surface of the sliding seat body (81), and the inner ends of the two sliding baffles (83) are fixed with two sliding plug rods (84) so ​​as to be plugged into the cable conduit mechanism (9) through the sliding plug rods (84); the tensioning spring (85) is sleeved on the bidirectional screw (82).

11. The device for enhanced cooling of the landing section of a submarine cable by atomization-promoted phase change according to claim 10, characterized in that: The tensioning compression spring (85) is located between the two sliding baffles (83).

12. The device for enhanced cooling of the landing section of a submarine cable by atomization-promoted phase change according to claim 11, characterized in that: The cable conduit mechanism (9) comprises a fixed conduit (91), a fixed block, a movable conduit (92), a movable block, a conical ring (93), a sliding column (94), a compression spring (95), an active rack (96), a gear (97), a driven rack (98) and an arc-shaped clamping ring (99); two sliding baffles (83) are relatively blocked on both sides of a fixed seat at the top of the fixed conduit (91); sliding plug rods (84) at the inner ends of the two sliding baffles (83) are relatively plugged into the plug holes on both sides of the fixed seat; the outer end of the fixed conduit (91) slides with the movable conduit (92); the outer end of the movable conduit (92) is fixed with a conical ring (93); two movable blocks are relatively fixed on both sides of the movable conduit (92); a sliding column (94) is respectively fixed at the inner ends of the two movable blocks; the two sliding columns (94) The middle part slides on two fixed blocks, and the two fixed blocks are relatively fixed on both sides of the fixed guide tube (91). A compression spring (95) is sleeved on each sliding column (94), and the compression spring (95) is located between the fixed block and the movable block; an active rack (96) is fixed to the inner end of each sliding column (94), and the inner sides of the two active racks (96) are meshed one by one with two gears (97) rotatably connected to both sides of the fixed guide tube (91); the two gears (97) are meshed one by one with two driven racks (98) slidably matched in rectangular holes on the side of the fixed guide tube (91), and the driven racks (98) are arranged vertically with the active racks (96); the inner ends of the two driven racks (98) are fixedly connected one by one with two arc-shaped clamping rings (99) relatively matched in arc-shaped grooves on the inner side of the fixed guide tube (91).

13. The device for enhanced cooling of the landing section of a submarine cable by atomization-promoted phase change according to claim 12, characterized in that: The minimum diameter of the conical ring (93) is smaller than the diameter of the cable through-hole (211), and the maximum diameter of the conical ring (93) is larger than the diameter of the cable through-hole (211).

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