Underwater equipment cabin

Abstract

The invention relates to the technical field of thermal management of underwater equipment, and provides an underwater equipment cabin which comprises a cabin body, and a battery module or a heating element in the cabin body is soaked in immersion cold liquid. When the temperature of the battery module or the heating element is increased, the immersed cold liquid in the cold liquid pool cavity between the inner container and the shell can be passively / semi-passively triggered to automatically circulate under the rotation action of the phase change expansion device or the pumping device or the shell, so that the temperature of the battery module or the heating element is controlled. According to the underwater equipment cabin, through the innovative immersion cooling system, the cooling temperature control method of immersion type passive triggering or semi-passive triggering cooling circulation under the single-phase / two-phase condition can be executed, so that immersion cooling liquid can passively / semi-passively trigger automatic circulation, automatic starting is achieved when the internal temperature rises, no external energy or manual intervention is needed, and the operation is simple and convenient. And an immersed cooling technology is adopted, so that the heat dissipation efficiency is high, and the system structure is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater equipment thermal management, and in particular to an underwater equipment cabin. Background Art

[0002] With the continuous development of marine resources, deep-sea projects such as offshore drilling platforms, offshore aquaculture, and offshore scientific exploration are booming, and the demand for submarine equipment is growing. However, the particularity of the operating environment of submarine equipment, such as high salinity, high pressure, and low temperature, poses severe challenges to the long-term stable operation of the equipment. In particular, the thermal management and marine fouling protection issues of key equipment such as submarine data centers and submarine energy storage power stations are particularly prominent.

[0003] The existing thermal management technologies for submarine equipment mainly include air cooling and liquid cooling. Although the air cooling method has a simple structure, its heat dissipation efficiency is limited in the deep sea environment and it is difficult to meet the heat dissipation requirements of high-density equipment. Although the liquid cooling method has a higher heat dissipation efficiency, it mostly uses indirect liquid cooling, that is, the heat is circulated outside the equipment by the coolant, which has problems such as large contact thermal resistance and complex system design. In addition, most existing liquid cooling systems are actively controlled and require external power to drive, which increases energy consumption and system maintenance costs.

[0004] In addition, marine fouling organisms attached to the surface of submarine equipment can cause corrosion and cracking of the equipment, seriously affecting the operational safety and service life of the equipment. Existing anti-fouling methods mainly include the use of biotoxic anti-fouling paints and regular salvage and cleaning of equipment. However, toxic substances in anti-fouling paints may pollute the marine environment, and regular salvage and cleaning are not only costly, but also increase carbon emissions.

[0005] A Chinese patent with publication number CN115175541A discloses a heat dissipation optimization device for a submarine data center. The patent proposes a heat dissipation optimization device for a submarine data center, which improves heat dissipation through water pipes and heat sinks, and combines structures such as scrapers and traction ropes for cleaning. However, the device still uses air cooling combined with indirect liquid cooling, which makes the system complex and the heat dissipation efficiency low. In addition, its cleaning mechanism relies on a complex mechanical structure, which is easily damaged when exposed to the marine environment, and has a limited cleaning range.

[0006] A Chinese patent with publication number CN115228803A discloses a bionic robot for cleaning biological attachments on the surface of an underwater data center. The patent proposes a bionic robot that can rotate around an underwater data center for automatic cleaning. However, its cleaning area is limited to the space between the robot's mounting sleeves, and the cleaning range is limited. In addition, its mechanical device is exposed to the marine environment and is highly likely to be damaged by the harsh environment of the seabed.

[0007] A Chinese patent with publication number CN102408763A discloses a method for preparing a ship bottom antifouling coating, which provides a method for preparing a ship bottom antifouling coating, which prevents marine organisms from attaching by using toxic substances in the coating. However, this method has the risk of environmental pollution, and once the coating falls off, it will have a long-term impact on the marine ecology. In addition, this method cannot effectively solve the problem of attached marine organisms, and the coating needs to be replaced regularly, which increases maintenance costs.

[0008] The existing technology still has the following problems in thermal management of submarine equipment and protection against marine fouling organisms:

[0009] (1) Low heat dissipation efficiency: Existing air cooling and indirect liquid cooling methods are difficult to meet the heat dissipation requirements of high-density equipment, especially in deep-sea environments.

[0010] (2) Complex system design: The indirect liquid cooling system has problems such as large contact thermal resistance and complex system design, which increases the system maintenance cost.

[0011] (3) High energy consumption: The actively controlled liquid cooling system requires external power to drive, which increases energy consumption.

[0012] (4) Environmental pollution risk: Antifouling coatings containing toxic substances may cause pollution to the marine environment.

[0013] (5) Limited cleaning effect: Existing cleaning mechanisms mostly rely on complex mechanical structures, are easily affected by the marine environment, and have a limited cleaning range.

[0014] Therefore, it is necessary to develop a more efficient, stable and environmentally friendly thermal management and marine fouling bioprotection solution for subsea equipment to meet the long-term stable operation requirements of deep-sea projects for subsea equipment. Summary of the invention

[0015] In view of this, the present invention aims to solve the heat dissipation and cleaning problems faced by the underwater equipment cabin when working in harsh environments. The present application provides an underwater equipment cabin with a passively triggered immersion thermal management system that does not require an external power source and realizes a self-cleaning mechanism.

[0016] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0017] The present application discloses an underwater equipment cabin, including a cabin body, wherein a battery module or a heating element inside the cabin body is immersed in an immersion cold liquid, and the cabin body can perform the following temperature control method:

[0018] The immersion cooling liquid is single-phase, and when the battery module or heating element generates heat, it can change the pressure difference inside and outside the space where the battery module or heating element is located and drive the immersion cooling liquid to flow to the space where the battery module or heating element is located.

[0019] Furthermore, a battery module or a heating element is arranged inside an inner liner, and a phase change expansion device is arranged on the inner liner, the phase change expansion device includes a sensor, a flow channel and an expansion body, the sensor is arranged inside the inner liner, the expansion body is located in the cold liquid pool cavity between the inner liner and the outer shell, the sensor is connected to the expansion body through the flow channel, the sensor liquid in the sensor body is heated and vaporized when the battery module or the heating element is working, and flows into the expansion body through the flow channel, the volume of the expansion body increases and the pressure in the cold liquid pool cavity increases, thereby driving the immersion cold liquid to flow to the space where the battery module or the heating element is located.

[0020] Furthermore, a backup cooling system is provided, including cooling pipes and pumps, for extracting immersion cold liquid to cool the sensor when the sensor of the phase change expansion device is overloaded, thereby controlling the internal temperature of the liner.

[0021] The present application also discloses another underwater equipment cabin, including a cabin body, wherein a battery module or a heating element inside the cabin body is immersed in an immersion cold liquid, and the cabin body can perform the following temperature control method:

[0022] The immersion cold liquid is two-phase. When the battery module or the heating element generates heat, the immersion cold liquid in the immersion cavity inside the inner tank can be vaporized and evaporated to the cold liquid pool cavity between the inner tank and the outer shell. The vaporized immersion cold liquid contacts the cold wall surface of the outer shell to condense and gather into the cold immersion liquid pool at the bottom of the cold liquid pool cavity. The immersion cold liquid in the cold immersion liquid pool can be transported to the inner tank under the action of a pumping device or the rotation of the outer shell and cool the battery module or the heating element inside it.

[0023] Furthermore, a transfer groove is provided on the outer shell, and when the outer shell rotates, the transfer groove brings up the condensed immersion cold liquid, and when it rotates to the immersion liquid inlet groove on the inner tank, the immersion cold liquid in the transfer groove is poured into the immersion liquid inlet groove under the action of gravity and flows to the inner tank.

[0024] Furthermore, the cabin body includes an outer shell, the battery module or heating element is arranged inside the inner shell, and in the cold liquid pool cavity between the outer shell and the inner shell, the immersion cold liquid can circulate between the cold liquid pool cavity and the immersion cavity inside the inner shell, and the outer shell can rotate under the action of power.

[0025] Furthermore, when the shell of the cabin body rotates, the organisms attached to the outer surface of the cabin body are cleaned through the flushing effect of water flow outside the shell, the friction effect of adjacent shells, or the friction effect of the cleaning device on the outer surface of the rotating shell.

[0026] Furthermore, the outer shell of the cabin body is concentrically sleeved on the outer side of the inner liner, the inner liner is supported and fixed on a support, and the outer shell rotates continuously or intermittently relative to the inner liner.

[0027] Furthermore, one or more cabins are disposed in the support, and the multiple cabins are arranged in any one of a chain, tree, or ring shape. The outer shell of at least one of the multiple cabins can rotate relative to the support, or the outer shell of at least one cabin can drive the outer shells of multiple cabins to rotate.

[0028] Furthermore, when the cabins are arranged in plurality, an enhanced friction cleaning device is provided on the surface of the outer shell; when the cabins are arranged individually, an enhanced friction cleaning device is provided on the support.

[0029] Compared with the prior art, the underwater equipment cabin of the present invention has the following advantages:

[0030] (1) The underwater equipment compartment described in the present invention can implement a cooling temperature control method of immersion passive triggering or semi-passive triggering cooling cycle in single-phase / two-phase conditions through an innovative immersion cooling system, so that the immersion cooling liquid can be passively / semi-passively triggered to automatically circulate without the need for an external power source. The battery modules or heating elements in the equipment compartment can obtain continuous and efficient heat dissipation, thereby reducing energy consumption and operating costs.

[0031] (2) The rotating design of the outer shell of the underwater equipment cabin described in the present invention not only enhances the heat dissipation effect, but also realizes automatic cleaning of the outer surface of the inner tank, reduces the frequency and difficulty of manual cleaning, reduces maintenance costs, and at the same time improves the reliability and durability of the equipment cabin in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 This is a schematic diagram of the structure of the cabin body of the embodiment of the present invention after removing the end cover;

[0034] Figure 2 for Figure 1 A schematic diagram of a side view of the structure shown in;

[0035] Figure 3 for Figure 1 A schematic diagram of a perspective structure of a second side view of the structure shown in ;

[0036] Figure 4 It is a schematic diagram of the structure of the underwater equipment cabin of the present invention performing cooling cycle when a single-phase immersion liquid is used;

[0037] Figure 5 for Figure 4Schematic diagram of the liquid level of the cold liquid immersed inside and outside the inner tank in the initial state, the expanded state and the contracted state of the expansion body of the structure shown in FIG.

[0038] Figure 6 It is a schematic diagram of the structure of the underwater equipment cabin of the present invention in which a pumping device is combined to perform cooling circulation when a two-phase immersion liquid is used;

[0039] Figure 7 for Figure 6 The structure shown in the figure is a schematic diagram of immersing the cooling liquid in the cooling cycle for pumping, forced convection cooling, evaporation by heat, and condensation collection;

[0040] Figure 8 It is a schematic diagram of the structure of the underwater equipment cabin of the present invention in which a cooling cycle is performed in combination with the rotation of the outer shell when a two-phase immersion liquid is used;

[0041] Fig. 9 for Figure 8 The schematic diagram of the structure shown in the figure is that it is immersed in cold liquid to be heated and evaporated, condensed and collected, the shell rotates, and is lifted and dumped during the cooling cycle;

[0042] Fig.10 for Figure 8 Schematic diagram of the structure shown in the figure immersed in cold liquid entering the inner tank;

[0043] Fig.11 This is a schematic diagram of the structure of some parts of a rotating cleaning assembly arranged outside the inner tank in an embodiment of the present invention;

[0044] Fig.12 It is a perspective schematic diagram of a partial structure of a rotating cleaning assembly disposed inside a housing according to an embodiment of the present invention;

[0045] Fig.13 A schematic diagram of a simplified design structure of a support according to an embodiment of the present invention;

[0046] Fig.14 It is a front view structural schematic diagram of a plurality of cabins installed on a support in an embodiment of the present invention;

[0047] Fig.15 for Fig.14 An assembly diagram of the structure shown in the figure after removing the plate body on which the first mounting hole is arranged;

[0048] Description of reference numerals:

[0049] 100-cabin; 200-support; 1-liner; 2-battery module or heating element; 3-first connecting device; 4-second connecting device; 5-sensor; 6-circulation channel; 7-expansion body; 8-phase change expansion device; 9-housing; 10-immersion cavity; 11-cold liquid pool cavity; 12-motor mounting bracket; 13-motor mounting cabin; 14-first transmission gear; 15-first air hole; 16-first motor; 17-first connecting Connecting shaft; 18-first bearing washer; 19-first bearing; 20-first shaft hole; 21-first end cover; 22-first rack; 23-second end cover; 24-first assembly hole; 25-support housing; 26-first mounting hole; 27-first connecting groove; 28-support cover plate; 29-cold immersion liquid pool; 30-immersion liquid channel; 31-pump seat; 32-pump; 33-immersion liquid inlet groove; 34-pipette groove; 35-pressure flap. DETAILED DESCRIPTION

[0050] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention are described in detail below with reference to specific drawings.

[0051] It should be noted that all the terms used in the present invention for directional and positional indications, such as "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "low", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection status between the components in a certain state (as shown in the accompanying drawings), and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features.

[0052] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0054] Thermal management is the process of adjusting and controlling the temperature or temperature difference of a specific object by means of heating or cooling. In order to keep the submarine equipment working at a reasonable ambient temperature, thermal management is performed on the submarine equipment to prevent it from overheating when its power consumption is too high, resulting in low operating efficiency, or even causing fire, thermal runaway and other operating accidents.

[0055] At present, common thermal management technologies can be divided into air cooling and liquid cooling according to the cooling medium; liquid cooling can be divided into indirect liquid cooling and direct liquid cooling, also known as liquid immersion cooling. Studies have shown that liquid cooling systems can significantly extend battery life and reduce battery operation and maintenance costs and cooling carbon emissions. On this basis, the applicant introduced single-phase / two-phase immersion cooling liquid to form a passively triggered or semi-passively triggered immersion thermal management system.

[0056] Specifically, if Figures 1 to 8 As shown, the underwater equipment cabin disclosed in the present application includes a cabin body 100, the cabin body 100 includes an inner tank 1 and an outer shell 9, the outer shell 9 is sleeved on the outer side of the inner tank 1, an immersion cavity 10 for accommodating and installing a battery module or a heating element 2 is provided in the inner tank 1, a cold liquid pool cavity 11 is formed between the inner tank 1 and the outer shell 9, an immersion cold liquid flow passage is formed between the cold liquid pool cavity 11 and the immersion cavity 10, the battery module or the heating element 2 is in direct contact with the insulating liquid and immersed in the immersion cold liquid, and the cabin body 100 can perform the following cooling temperature control method:

[0057] When the immersion cold liquid is single-phase, the heat generated by the battery module or heating element 2 can change the pressure difference between the inside and outside of the space where the battery module or heating element 2 is located (immersion cavity 10), and the immersion cold liquid outside the space where the battery module or heating element 2 is located (cold liquid pool cavity 11) is passively driven to flow to the space where the battery module or heating element 2 is located, so that the battery module or heating element 2 can be immersed in the immersion cold liquid to dissipate heat, and the temperature of the battery module or heating element 2 inside the cabin 100 is regulated;

[0058] When the immersion cold liquid is two-phase, the two-phase immersion cold liquid can be vaporized and evaporated to the cold liquid pool cavity 11 under the action of the battery module or the heating element 2. The vaporized immersion cold liquid contacts the cold wall surface of the shell 9 in the cold liquid pool cavity 11, condenses and gathers into the cold immersion liquid pool at the bottom of the cold liquid pool cavity 11. The immersion cold liquid in the cold immersion liquid pool can be transported to the inner tank 1 under the action of the pumping device or the rotation of the shell 9 and cool the battery module or the heating element 2 inside it.

[0059] The underwater equipment cabin disclosed in the present application can execute a cooling temperature control method of an immersion passive triggering or semi-passive triggering cooling cycle in a single-phase / two-phase condition. The battery module or heating element 2 inside the cabin 100 is in direct contact with the insulating liquid and immersed in the immersion cold liquid, which simplifies the system design and reduces the system complexity. The cooling process of the seabed equipment can be passively / semi-passively triggered without the need for external force to drive it, which saves energy and further reduces the operation and maintenance costs.

[0060] As a preferred example of the present application, the underwater equipment cabin further includes:

[0061] The support 200 is used to support and fix the inner liner 1 of the cabin body 100, and the outer shell 9 can rotate relative to the inner liner 1 under the action of power.

[0062] The present application discloses an underwater equipment cabin, including a cabin body 100 and a support 200, wherein the cabin body 100 is composed of an inner tank 1 and an outer shell 9, a battery module or a heating element 2 is arranged in the inner tank 1, and is filled with immersion cold liquid, and the immersion cold liquid can be a single-phase immersion cold liquid. At this time, the pressure in the cold liquid pool cavity 11 is increased by designing a phase change expansion device 8 or other methods, so that the immersion cold liquid in the cold liquid pool cavity 11 flows to the immersion cavity 10, and further cools the battery module or the heating element 2 in the immersion cavity 10. When the battery module or the heating element 2 does not work or there is too much immersion cold liquid in the immersion cavity 10, the pressure in the cold liquid pool cavity 11 will decrease, so that the immersion cold liquid in the immersion cavity 10 flows to the cold liquid. The immersion cold liquid can also be a two-phase immersion cold liquid, which can be vaporized under the action of the battery module or the heating element 2, and the vaporized immersion cold liquid is unidirectionally discharged to the cold liquid pool cavity 11 between the outer shell 9 and the inner liner 1. The vaporized cold liquid contacts the cold wall surface of the outer shell 9 in the cold liquid pool cavity 11, condenses, and converges to the cold immersion liquid pool at the bottom of the cold liquid pool cavity 11 under the action of gravity. As the internal pressure of the inner liner 1 decreases, the immersion cold liquid in the cold liquid pool cavity 11 between the outer shell 9 and the inner liner 1 is sent into the inner liner 1 through the one-way valve or the immersion liquid inlet groove under the rotation of the outer shell 9 or the action of the provided pumping device, thereby realizing a semi-passive triggered cooling cycle. At the same time, the support 200 supports and fixes the inner liner 1, and the outer shell 9 can rotate relative to the inner liner 1 through external power or a driving device, and the friction between the flow of seawater and the outer shell or the mutual friction between the surfaces of the outer shells 9 of multiple cabins 100 is used to clean the seabed fouling, thereby achieving the effect of cleaning the seabed fouling organisms and enhancing heat exchange.

[0063] The underwater equipment cabin disclosed in the present application, by introducing a single-phase or two-phase immersion cooling liquid, forms a passive / semi-passive triggered immersion thermal management system, which significantly improves the heat dissipation efficiency, prolongs the battery life, and reduces the battery operation and maintenance costs and cooling carbon emissions. It can automatically start the cooling cycle when the internal equipment temperature rises without external force driving, reducing the operation and maintenance costs. At the same time, through the rotation of the outer shell relative to the inner tank, it not only achieves the cleaning of the seabed fouling organisms, but also strengthens the convective heat exchange between the underwater equipment cabin and the seawater, further improving the heat dissipation effect. The underwater equipment cabin described in the present application, its improved design combines passive heat dissipation and automatic cleaning functions, killing two birds with one stone, improving the long-term stable operation capability of the seabed equipment, and reducing maintenance costs and environmental impacts.

[0064] Example 1

[0065] As a preferred example of this application, Figure 4 , Figure 5As shown, the immersion cold liquid is a single-phase immersion cold liquid, the phase change expansion device 8 is arranged on the inner tank 1, and a first connecting device 3 is arranged at the lower end of the inner tank 1 for the immersion cold liquid to flow into or out of the inner tank 1.

[0066] The phase change expansion device 8 includes a sensor 5, a circulation channel 6 and an expansion body 7. The sensor 5 is arranged in an immersion cavity 10, and the expansion body 7 is arranged in a cold liquid pool cavity 11. The sensor 5 is connected with the expansion body 7 through the circulation channel 6. A sensor liquid made of a gas-liquid phase change material is arranged in the sensor 5. The immersion cavity 10 heats up and heats the sensor 5 when the battery module or the heating element 2 is working. The sensor liquid in the sensor 5 is vaporized by heat and flows into the expansion body 7 through the circulation channel 6. The volume of the expansion body 7 increases and the pressure in the cold liquid pool cavity 11 increases.

[0067] In the example of the present application, the sensing body 5 of the phase change expansion device 8 is a liquid storage tank filled with gas-liquid phase change material, and the tank body is made of a material with a high thermal conductivity. The sensing body 5 is arranged in the immersion cavity 10, and the sensing body 5 is heated when the working temperature of the battery module or the heating element 2 in the immersion cavity 10 increases. After the sensing liquid in the sensing body 5 is heated and vaporized, it flows along the flow channel 6 to the expansion body 7 outside the inner tank 1. The expansion body 7 is an elastic air bag. The elastic air bag has a low thermal conductivity and good thermal insulation performance. The expansion body 7 can expand with the inflow of the vaporized sensing liquid, and the volume increases rapidly, thereby increasing the pressure in the cold liquid pool cavity 11. At this time, the pressure of the cold liquid pool cavity 11 is greater than the pressure of the inner tank 1. At this time, the expansion body 7 increases, and the immersion cold liquid of the cold immersion liquid pool 29 in the cold liquid pool cavity 11 is pressed into the inner tank 1 through the immersion liquid channel 30, and forms a Figure 5 The schematic diagram of the immersion cold liquid level inside and outside the inner liner 1 shown in the middle shows that the immersion cold liquid flow is horizontally flushed from the bottom to the battery module or heating element 2 (cylindrical battery pack) arranged inside the immersion cavity 10, forming forced convection, which effectively improves the cooling effect. When the temperature of the inner liner 1 drops significantly, the temperature of the sensor 5 decreases, and the vaporized sensor liquid condenses when it encounters the cold sensor 5, and the gas-liquid phase change material is stored in the liquid storage tank of the sensor 5 again. At this time, the expansion body 7 contracts, and the pressure in the cold liquid pool cavity 11 (interlayer space) is significantly reduced and a negative pressure is formed, and a part of the immersion cold liquid inside the immersion cavity 10 is sucked out to the cold liquid pool cavity 11 through the immersion liquid channel 30, and is cooled on the wall of the outer shell, and replenished into the cold immersion liquid pool 29 at the bottom of the outer shell for use when the airbag is triggered next time, and a negative pressure is formed as shown in the figure. Figure 5 The schematic diagram of the level of the cold liquid immersed inside and outside the inner tank 1 shown on the right is also as shown in FIG. Figure 5 The left side shows a schematic diagram of the liquid level of the inner tank 1 immersed in cold liquid with the expansion body 7 in the initial state.

[0068] As a preferred example of the present application, a plurality of phase-change expansion devices 8 are arranged on the inner liner 1 , and the plurality of phase-change expansion devices 8 are arranged above the horizontal center line of the inner liner 1 .

[0069] The cooling system of the underwater equipment cabin described in the present application has the characteristics of passive triggering and does not require external force to drive. The phase change expansion device 8 realizes the automatic circulation of the coolant, which improves the reliability and stability of the system. The use of single-phase immersion cold liquid and two-phase sensing liquid enables the system to automatically adjust the cooling intensity according to temperature changes, which not only ensures the cooling effect but also avoids energy waste. In addition, the design of the expansion body 7 not only increases the pressure of the cold liquid pool cavity 11, but also enables the cold liquid pool cavity 11 and the immersion cavity 10 to perform adaptive immersion cold liquid flow regulation, thereby improving the cooling efficiency. At the same time, the sensing liquid absorbs part of the heat during the phase change process, further enhancing the heat dissipation capacity.

[0070] The cooling process of the underwater equipment cabin described in the present application, in which the immersion cooling liquid is a single-phase immersion cooling liquid, is as follows:

[0071] When the temperature of the inner tank 1 rises, the sensor 5 is heated, the temperature rises, the sensor liquid vaporizes, and the expansion body 7 expands. At this time, the pressure of the cold liquid pool cavity 11 is greater than the pressure of the immersion cavity 10 in the inner tank 1, and the immersion cold liquid in the cold liquid pool cavity 11 is squeezed into the inner tank 1 through the immersion liquid channel 30 in the first connecting device 3 to cool the battery module or heating element 2 in the inner tank 1. When the temperature of the inner tank 1 drops significantly, the gaseous sensor liquid liquefies, the expansion body 7 contracts, and the cold liquid pool cavity 11 is negative pressure. A part of the immersion cold liquid inside the inner tank 1 is sucked out to the cold liquid pool cavity 11 through the immersion liquid channel 30, and is cooled on the wall of the shell, and is replenished into the cold immersion liquid pool 29 at the bottom of the shell 9 for use when the sensor 5 is triggered next time.

[0072] The setting discloses a specific example of a passive cooling cycle using a single-phase immersion cooling liquid. Without going through a complex phase change process, the cooling process is more direct and rapid, thereby improving cooling efficiency and reducing system complexity and cost.

[0073] As a preferred example of the present application, the underwater equipment cabin is also provided with a backup cooling system, which is used to extract immersion cold liquid to cool the sensor 5 when the sensor 5 of the phase change expansion device 8 is overloaded. In the example of the present application, the cooling limit provided by the passive cooling circulation system depends on the remaining amount of the sensor liquid in the sensor 5. When the system generates too much heat, the temperature of the battery module or the heating element 2 continues to rise, and the sensor liquid in the sensor 5 is evaporated, the immersion cold liquid in the cold immersion liquid pool of the cold liquid pool cavity 11 stops being pressed into the inner tank 1, and the passive cooling cycle process stops, resulting in the inability to effectively cool part of the inner tank 1, and the temperature rises to outside the safe range. Under normal circumstances, the amount of sensor liquid in the sensor 5 is designed according to the cooling requirements of the internal equipment during normal operation, and a relevant margin is reserved (to ensure effective cooling under high load conditions); but if the sensor liquid evaporates, it is determined that the battery module or the heating element 2 has thermal runaway or overload. In response to the above phenomenon, the intervention measures generally adopted include: if it is found to be thermal runaway (irreversible temperature rise) after investigation, the corresponding equipment is flooded and scrapped; if it is found to be overloaded (reversible temperature rise) after investigation, the sensor 5 of the phase change expansion device 8 is actively cooled. In the specific example of the present application, a backup cooling system independent of the entire system is set up to cool the sensor 5 of the phase change expansion device 8. When overloaded, the cooling pipeline and pump of the backup cooling system are turned on, and the immersion cold liquid is drawn from the cold immersion liquid pool of the cold liquid pool cavity 11 to cool the sensor 5, and the internal temperature of the liner 1 is controlled by actively lowering the temperature of the sensor 5.

[0074] By setting up a backup cooling system, additional safety protection is provided for the underwater equipment compartment described in the present application. When the battery module or the heating element 2 is thermally overloaded, timely intervention is provided to provide active cooling for the sensor 5 to prevent the temperature of the inner tank 1 from continuing to rise and causing safety accidents.

[0075] Example 2

[0076] As a preferred example of this application, Figures 6-7As shown, the immersion cold liquid is a two-phase immersion cold liquid, which is filled in the immersion cavity 10 in the inner liner 1 in liquid form and immerses and cools at least part of the structure of the battery module or the heating element 2. In this system, the two-phase immersion cold liquid is filled in the immersion cavity 10 of the inner liner 1 in liquid form to immerse and cool the battery module or the heating element 2. When the battery module or the heating element 2 is working, heat is generated, which causes the liquid two-phase immersion cold liquid in the immersion cavity 10 to be heated and vaporized, thereby causing the internal pressure of the inner liner 1 to rise. As the internal pressure of the inner liner 1 increases, the vaporized immersion cold liquid is discharged in one direction through a specially designed one-way valve to the cold liquid pool cavity 11 between the outer shell 9 and the inner liner 1. In the cold liquid pool cavity 11, the vaporized cold liquid is rapidly condensed and gathered in the cold immersion liquid pool at the bottom. As the internal pressure of the liner 1 gradually decreases, the pressure in the cold liquid pool cavity 11 is greater than the pressure in the immersion cavity 10, and the condensed liquid immersion cold liquid is pumped into the liner 1 again by the pumping device, thereby forming a complete semi-passive triggered cooling cycle.

[0077] The system utilizes the latent heat of phase change during the heated vaporization process of the two-phase immersion cooling liquid, greatly improving the heat dissipation efficiency while avoiding the energy consumption and maintenance costs that may be caused by traditional air cooling or liquid cooling systems.

[0078] As a preferred example of the present application, the first connecting device 3 includes a pump seat 31 arranged below the inner tank 1, a pump 32 is arranged on the pump seat 31, the inlet pipe of the pump 32 is immersed in the cold immersion liquid pool 29, and the outlet of the pump 32 is connected to the inlet on the inner tank 1.

[0079] As a specific example of the present application, a cylindrical battery pack or other electrical equipment (battery module or heating element 2) that needs to be arranged and immersed in cooling is arranged in the inner tank 1, and two-phase immersion cold liquid is installed. A second connecting device 4 is arranged on the inner tank 1, which only allows gas to flow out of the inner tank 1 in one direction. When the pressure of the inner tank 1 reaches a certain value, it is used to flow the vaporized immersion cold liquid to the cold liquid pool cavity 11; the outer shell 9 is sleeved on the outer side of the inner tank 1 and the outer shell 9 is in direct contact with the seawater, which can be regarded as the condensation end, and the entire outer shell 9 is regarded as the condensation wall surface. The gaseous immersion cold liquid that flows into the cold liquid pool cavity 11 after vaporization in the immersion cavity 10 contacts the condensation wall surface of the outer shell 9, condenses, and converges to the cold immersion liquid pool at the bottom of the cold liquid pool cavity 11 under the action of gravity. The pump 32 pumps the immersion cold liquid in the cold immersion liquid pool 29 into the inner tank space to cool the internal battery pack or other heating equipment. The whole process is a semi-passive process.

[0080] In the example of this application, the cooling cycle process is as follows Figure 7As shown, A is a schematic diagram of the step of pumping the immersion cold liquid in the cold immersion liquid pool 29; B is a schematic diagram of the step of the pumped immersion cold liquid flushing the battery module or heating element 2 from the bottom horizontally to form forced convection cooling; C is a schematic diagram of the step of the two-phase immersion cold liquid being heated and evaporated and discharged from the inner tank 1 through the one-way gas pressure relief valve; D is a schematic diagram of the step of the gaseous immersion cold liquid contacting with the condensation wall of the shell 9 and condensing into the cold immersion liquid pool 29, and its specific operation is as follows:

[0081] The semi-passive triggering cooling cycle process of the underwater equipment cabin described in the present application is as follows: when the temperature of the battery module or heating element 2 arranged in the inner tank 1 rises, the two-phase immersion cold liquid in the inner tank 1 undergoes phase change due to heat, generating a large amount of gas, and the internal pressure of the inner tank 1 rises. The pressure of the immersion cavity 10 in the inner tank 1 is greater than the pressure of the cold liquid pool cavity 11. At this time, the one-way gas pressure relief valve opens under the action of pressure, releasing the inner tank gas to the cold liquid pool cavity 11, and the gas contacts the wall of the cold outer shell, condenses, and gathers to the bottom cold immersion liquid pool under the action of gravity. The immersion cold liquid in the cold immersion liquid pool 29 is pumped into the inner tank 1 again by the pumping device to cool the internal battery module or heating element 2.

[0082] In the example of the present application, the second connecting device 4 is arranged above the horizontal center line of the inner tank 1, and the second connecting device 4 is a one-way gas pressure relief valve. The second connecting device 4 is designed as a one-way gas pressure relief valve and is located near the upper end of the inner tank 1. This layout enables the gas to be smoothly discharged from the immersion cavity 10 to the cold liquid pool cavity 11 through the second connecting device 4 when the two-phase immersion cold liquid in the inner tank 1 is heated and vaporized, without reverse flow, further enhancing the heat dissipation effect.

[0083] Example 3

[0084] As a preferred example of this application, Figures 8 to 10 As shown, a transfer groove 34 is provided on the inner wall of the shell 9, and an immersion liquid inlet groove 33 is provided on the inner liner 1. The immersion liquid inlet groove 33 is connected to the immersion cavity 10. The transfer groove 34 can rotate integrally with the shell 9 and lift the immersion cold liquid in the cold immersion liquid pool 29 to above the immersion liquid inlet groove 33 and pour it into the immersion liquid inlet groove 33 under the action of gravity, and then flow to the immersion cavity 10. Compared with Example 2, this embodiment abandons the use of a pumping device to transport the immersion cold liquid into the inner liner 1, and instead uses a transfer groove 34 installed on the shell 9 to lift the immersion cold liquid. When the immersion cold liquid is lifted to above the immersion liquid inlet groove 33, it can be poured into the immersion liquid inlet groove 33 of the inner liner 1 under the action of gravity, and then flow to the immersion cavity 10 through the immersion liquid inlet groove 33 to cool the battery module or heating element 2 inside it to dissipate heat.

[0085] This arrangement simplifies the system structure, reduces energy consumption and maintenance costs, and realizes the circulation of cold liquid by physical means, thereby improving the reliability and stability of the system. At the same time, since the transfer tank 34 rotates integrally with the outer shell 9, the entire refrigeration cycle process is completely passive and does not require an additional power source or control mechanism.

[0086] As a preferred example of the present application, the immersion liquid inlet groove 33 is tiltedly arranged on the upper side of the inner liner 1. In this example, the immersion cold liquid in the inner liner 1 is heated and vaporized and then flows to the cold liquid pool cavity 11 through the immersion liquid inlet groove 33; the gaseous immersion cold liquid that vaporizes in the immersion cavity 10 and flows into the cold liquid pool cavity 11 contacts the condensation wall surface of the outer shell 9, condenses, and converges to the cold immersion liquid pool 29 at the bottom of the cold liquid pool cavity 11 under the action of gravity; when the outer shell 9 rotates, it drives the transfer groove 34 to rotate integrally and can lift the immersion cold liquid in the cold immersion liquid pool 29 to the top of the immersion liquid inlet groove 33, and the transfer groove 34 is further rotated with the outer shell 9. Under the action of gravity, it pours into the immersion liquid inlet groove 33, thereby realizing immersion cooling of the battery module or heating element 2 inside the inner liner 1.

[0087] As a preferred example of the present application, a second connecting device 4 is provided on the inner tank 1, and a pressure flap 35 is provided at the entrance of the immersion liquid inlet groove 33. The pressure flap 35 closes the immersion liquid inlet groove 33 under normal conditions and can be opened under pressure when subjected to gravity.

[0088] In the example of this application, the cooling cycle process is as follows Fig. 9 As shown, E is a schematic diagram of the step in which the two-phase immersion cold liquid is heated and evaporated and discharged from the inner tank 1 through the one-way gas pressure relief valve; F is a schematic diagram of the step in which the gaseous immersion cold liquid contacts the condensation wall of the shell 9, condenses and merges into the cold immersion liquid pool 29; G is a schematic diagram of the step in which the shell 9 rotates; H is a schematic diagram of the step in which the transfer tank 34 lifts the immersion cold liquid and pours it into the immersion liquid inlet tank 33 when rotating integrally with the shell 9.

[0089] When the temperature of the battery module or the heating element 2 rises, the internal two-phase immersion cold liquid is heated and vaporized, so that the pressure of the inner tank 1 is greater than the pressure of the cold liquid pool cavity 11; when the pressure of the inner tank 1 reaches a certain value, the vaporized immersion cold liquid is discharged from the one-way gas pressure relief valve to the cold liquid pool cavity 11; the vaporized immersion cold liquid encounters cold condensation on the inner wall surface of the shell 9, and flows into the cold immersion liquid pool 29 along the wall surface. At this time, since the shell 9 is in a rotating state, the transfer groove 34 takes up the condensed immersion cold liquid through the cold immersion liquid pool 29, and when it rotates to the immersion liquid inlet groove 33, the immersion cold liquid in the transfer groove 34 is poured into the immersion liquid inlet groove 33 under the action of gravity. In the process of continuous rotation of the shell 9, when the immersion cold liquid in the immersion liquid inlet groove 33 accumulates to a certain amount, the pressure flap 35 is pressed to open, and the cold immersion cold liquid enters the inner tank 1 to cool the battery module or the heating element 2.

[0090] In this embodiment, the rotational effect of the outer shell 9 relative to the inner shell 1 is utilized to remove the seabed fouling organisms on the surface of the equipment cabin. Through the innovative pipetting tank design and the inclined immersion liquid inlet tank setting, an efficient, simple and completely passive immersion cold liquid circulation system is realized.

[0091] In the example of the present application, the cabin 100 includes an outer shell 9, the battery module or heating element 2 is arranged inside the inner liner 1, and a cold liquid pool cavity 11 is formed between the outer shell 9 and the inner liner 1. The immersion cold liquid can circulate between the cold liquid pool cavity 11 and the immersion cavity 10 inside the inner liner 1. The power of the circulation includes pressure difference drive, evaporation condensation phase change and pump drive, and the immersion cold liquid circulation formed by the liquid tank lifting combined with gravity, or the power of the circulation includes any one of capillary force, natural convection generated by local temperature difference, and siphon formation driving force; the outer shell 9 can rotate under the action of power, and the driving kinetic energy for the rotation of the outer shell 9 relative to the inner liner 1 includes any one of motor drive, seabed current drive, tidal energy drive, and wave energy drive.

[0092] Example 4

[0093] As a preferred example of this application, Figures 11 to 15 As shown, the outer shell 9 outside the inner liner 1 is provided with a single layer or multiple layers. As a specific example of the present application, when the battery module or heating element 2 and other devices in the inner liner 1 require higher installation stability, the outer shell 9 is provided with a single layer or a multi-layer structure, and the multi-layer structure can be regarded as a nesting of at least two layers of structures, and the space between the multi-layer outer shells can be filled with protective media such as heat transfer oil and inert gas, or can also be used to arrange other auxiliary equipment, such as heat dissipation equipment, transformer equipment, etc. The inner liner 1 is connected to the outer shell 9 structure through a bearing mechanism.

[0094] This arrangement achieves effective protection and stable support for the equipment in the inner liner by further optimizing the structure of the outer shell 9 outside the inner liner 1. When a multi-layer outer shell structure is adopted, it not only improves the overall strength and stability, but also provides additional space for filling protective media or arranging auxiliary equipment, further improving the reliability and safety of the system.

[0095] In addition, if the battery module or heating element 2 in the inner liner 1 does not have too high stability requirements, the inner liner 1 can also be set as a moving structure that can rotate relative to the support 200. When the battery module or heating element 2 in the inner liner 1 is working, the temperature of the immersion cavity 10 increases, so that the seawater outside the inner liner 1 is pumped into the immersion cavity 10 to cool the battery module or heating element 2, which simplifies the structure of the system, reduces costs, and improves the adaptability and practicality of the equipment.

[0096] As a preferred example of the present application, the shell 9 and the inner liner 1 are driven by a transmission method in which a motor device drives a gear rack, and the motor device can drive the shell 9 to rotate continuously or intermittently relative to the inner liner 1. In the example of the present application, the cabin 100 mainly includes an inner liner 1 with a motor mounting bracket 12, a first motor 16 and a first transmission gear 14 are arranged on the inner liner 1, a shell 9 is sleeved on the outer side of the inner liner 1, and a driven circular first rack 22 is arranged inside the outer liner 9. When the first transmission gear 14 rotates under the action of the first motor 16, it can drive the first rack 22 inside the outer liner 9 to rotate. The inner liner 1 and the outer liner 9 are connected at both ends through end covers and bearing mechanisms. The inner liner 1 is fixed to a designed support 200 through the optical axes (first connecting axis 17) at both ends. Multiple cabins 100 can be installed on one support 200. After the installation is completed, the first motor 16 is started. At this time, the inner liner 1 is stationary and the outer liner 9 rotates. At this time, the equipment cabin is in a self-cleaning operation state. In order to save electricity, the motor can be turned on once every period of time to achieve the cleaning purpose.

[0097] Specifically, a pair of motor mounting brackets 12 are provided on the inner tank 1, and the two motor mounting brackets 12 are symmetrically arranged on opposite sides of the horizontal center plane of the inner tank 1, and a motor mounting cabin 13 is provided on each of the motor mounting brackets 12, and a first motor 16 is provided in the motor mounting cabin 13, and the first motor 16 can drive the first transmission gear 14 to rotate. The inner liner 1 is arranged in a hollow cylindrical shape, and a first bearing washer 18 is fixed at both ends of the inner liner 1. The side edge of the first bearing washer 18 is slightly higher than the washer itself. The first bearing washer 18 protrudes upward and is installed outward along the axial direction to press the outward seat ring of the first bearing 19. The inner ring of the opposite bearing first bearing 19 can be fixed by the shoulder on the inner liner 1. First end covers 21 are installed at both ends of the inner liner 1. A reserved first air hole 15 is reserved on the first end cover 21 for use by internal electrical equipment cables. A first axial hole 20 is set on each of the first end covers 21. The first axial hole 20 is used to fix the first connecting shaft 17. The first connecting shaft 17 passes through the second end covers 23 at the opposite ends of the outer shell 9 and is connected to the support 200. The second end cover 23 is sealed and connected to the outer ring of the first bearing 19 through the first assembly hole 24. As a specific example of the present application, the outer shell 9 is a hollow cylinder with openings at both ends, and a circular first rack 22 is arranged on the inner side of the side wall, and a first assembly hole 24 is arranged on the second end cover 23 at both ends of the outer shell 9. During installation, the two ends of the inner liner 1 pass through the first assembly hole 24, and the outer ring of the first bearing 19 is fixed on the first assembly hole 24. The first rack 22 is meshed with the first transmission gear 14 outside the inner liner 1 for transmission, and is assembled into a set of cabin bodies 100.

[0098] This configuration discloses a specific way for the equipment cabin to realize the self-cleaning function, with a compact structure and stable and reliable transmission. The design of the motor driving the housing 9 to rotate relative to the inner tank 1 ensures the stability and reliability of the rotation cleaning, effectively reducing the frequency and cost of manual maintenance. For energy saving considerations, the motor can be set to start intermittently to achieve the cleaning effect.

[0099] As a preferred example of the present application, one or more pods 100 are arranged in the support 200, and the shells 9 of the pods 100 can rotate relative to the support 200. In the example of the present application, the rotating shafts of the pods 100 are connected to the first mounting holes 26 on the support 200.

[0100] Preferably, a group of motor devices are arranged in each of the cabins 100, and the shells 9 of the multiple cabins 100 can be independently driven by the motor devices inside them, and the multiple first mounting holes 26 are arranged in any one of the chain, tree, and ring shapes on the support 200. When the multiple cabins 100 are arranged in a specific arrangement such as a chain, tree, or ring shape, some cabins 100 need to rotate all around, while some cabins 100 only need to rotate a certain angle, and some cabins 100 do not need to rotate. The rotation angle of the driving member can be controlled according to the layout characteristics of the cabins 100, thereby maximizing the energy saving.

[0101] As a preferred example of the present application, when the cabins 100 are arranged in multiples, an enhanced friction cleaning device is provided on the surface of the shell 9 to enhance the mutual friction between the equipment cabins and enhance the cleaning effect; when the cabins 100 are arranged alone, an enhanced friction cleaning device is provided on the support 200, and the enhanced friction cleaning device includes a brush, a steel brush or a special surface structure for enhancing the mutual friction between the equipment to enhance the cleaning effect. This setting helps to enhance the self-cleaning effect of the equipment cabin, reduce the frequency and cost of manual cleaning, prevent dirt from accumulating in the equipment cabin, extend the service life of the equipment, and improve the operating efficiency and reliability of the equipment.

[0102] As a preferred example of the present application, fins, heat exchangers, gravity heat pipes and other heat transfer enhancement devices are arranged on the surface of the outer shell 9 and / or the inner tank 1. This arrangement further improves the heat dissipation performance of the equipment compartment, ensures the stable operation of the equipment in harsh working environments, and provides a strong guarantee for the long-term stable operation of the equipment.

[0103] As a preferred example of the present application, the support 200 includes a support shell 25, and the support shell 25 is provided with a first mounting hole 26 that matches the first connecting shaft 17 on the cabin 100. Preferably, the support 200 is designed as a box as a whole, and a support cover plate 28 is provided on the top and bottom surfaces of the support shell 25, and two side openings are designed perpendicular to the installation side of the first connecting shaft 17. When the final assembly is completed, the resistance of the device when it sinks to the seabed is reduced, and it is easier to mechanically hoist. A first connecting groove 27 is provided on the support shell 25 and / or the support cover plate 28, which is reserved for wiring of electrical equipment. As a specific example of the present application, five groups of cabins 100 are installed on the support shell 25, and one of the cabins 100 is set at the center of the side plate of the support shell 25, and the other four cabins 100 are set at the four azimuths of the central cabin 100, and the outer shell 9 of the central cabin 100 is in contact with the outer shells 9 of the other four cabins 100 at the same time, and can perform friction self-cleaning when rotating. When the motor device in the cabin 100 is started, the outer shell 9 of the cabin 100 rotates, and the related interference is realized to achieve the self-cleaning effect. After the cleaning standard is reached, the motor device can be turned off. In this embodiment, the outer shell 9 of the cabin 100 rotates intermittently. This design has high space utilization and scalability, and is suitable for a variety of application scenarios.

[0104] Compared with the prior art, the underwater equipment cabin described in this application has the following advantages:

[0105] 1. Passive / semi-passive triggered cooling: Through an innovative phase change expansion device or housing rotation design, the device can automatically start the cooling cycle when the internal temperature rises, without the need for external energy or human intervention, effectively reducing operating and maintenance costs.

[0106] 2. Efficient immersion heat dissipation: The immersion cooling technology not only has high heat dissipation efficiency, but also simplifies the system structure, significantly extends the battery life, and reduces carbon emissions during the cooling process. In addition, the immersion liquid can act as a barrier when a fire occurs inside the device, enhancing operational safety.

[0107] 3. Physical rotation anti-fouling: Traditional prevention and control methods generally use surface coatings with biological toxicity, which generally contain mercury or other toxic substances. Once they fall off, they will affect the marine environment. The commonly used physical methods such as ultrasound, electric pulses, etc. are removal methods. Affected by the treatment cost and treatment time interval, the fouling organisms have already caused a certain degree of damage to the surface of the equipment before treatment, and the purpose of prevention by the above physical methods cannot be achieved. The present invention uses pure physical rotation of the cabin to increase the relative flow rate with seawater, effectively preventing the attachment of seabed fouling organisms, and can avoid the use of biological toxic coatings or high-cost, inefficient physical removal methods. It is both environmentally friendly and economical, and achieves early prevention of fouling organisms.

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An underwater equipment cabin, characterized in that: The invention comprises a cabin (100), wherein a battery module or a heating element (2) inside the cabin (100) is immersed in an immersion cold liquid, and the cabin (100) is capable of executing the following temperature control method: The immersion cold liquid is single-phase, and when the battery module or heating element (2) generates heat, it can change the pressure difference between the inside and outside of the space where the battery module or heating element (2) is located, and drive the immersion cold liquid to flow to the space where the battery module or heating element (2) is located.

2. The underwater equipment compartment according to claim 1, characterized in that: The battery module or heating element (2) is arranged inside the inner liner (1), and a phase change expansion device (8) is arranged on the inner liner (1). The phase change expansion device (8) comprises a sensor (5), a circulation channel (6) and an expansion body (7). The sensor (5) is arranged inside the inner liner (1), and the expansion body (7) is located in a cold liquid pool cavity (11) between the inner liner (1) and the outer shell (9). The sensor (5) and the expansion body (7) are connected through the circulation channel (6). The sensor liquid in the sensor (5) is heated and vaporized when the battery module or heating element (2) is working, and flows into the expansion body (7) through the circulation channel (6). The volume of the expansion body (7) increases and the pressure in the cold liquid pool cavity (11) increases, thereby driving the immersion cold liquid to flow to the space where the battery module or heating element (2) is located.

3. The underwater equipment compartment according to claim 2, characterized in that: A backup cooling system is also provided, comprising a cooling pipeline and a pump, for extracting immersion cold liquid to cool the sensor (5) when the sensor (5) of the phase change expansion device (8) is overloaded, thereby controlling the internal temperature of the liner (1).

4. An underwater equipment cabin, characterized in that: The invention comprises a cabin (100), wherein a battery module or a heating element (2) inside the cabin (100) is immersed in an immersion cold liquid, and the cabin (100) is capable of executing the following temperature control method: The immersion cold liquid is two-phase. When the battery module or the heating element (2) generates heat, the immersion cold liquid in the immersion cavity (10) inside the inner tank (1) can be vaporized and evaporated to the cold liquid pool cavity (11) between the inner tank (1) and the outer shell (9). The vaporized immersion cold liquid contacts the cold wall surface of the outer shell (9) to condense and collect in the cold immersion liquid pool (29) at the bottom of the cold liquid pool cavity (11). The immersion cold liquid in the cold immersion liquid pool (29) can be transported into the inner tank (1) under the action of a pumping device or the rotation of the outer shell (9) to cool the battery module or the heating element (2) inside.

5. The underwater equipment compartment according to claim 4, characterized in that: A transfer groove (34) is provided on the outer shell (9), and when the outer shell (9) rotates, the transfer groove (34) brings up the condensed immersion cold liquid, and when it rotates to the immersion liquid inlet groove (33) on the inner liner (1), the immersion cold liquid in the transfer groove (34) is poured into the immersion liquid inlet groove (33) under the action of gravity and flows toward the inner liner (1).

6. The underwater equipment cabin according to claim 1 or 4, characterized in that: The cabin (100) comprises an outer shell (9), the battery module or heating element (2) is arranged inside the inner liner (1), and a cold liquid pool cavity (11) is provided between the outer shell (9) and the inner liner (1). The immersion cold liquid can circulate between the cold liquid pool cavity (11) and the immersion cavity (10) inside the inner liner (1), and the outer shell (9) can rotate under the action of power.

7. The underwater equipment cabin according to claim 1 or 4, characterized in that: When the shell (9) of the cabin (100) rotates, organisms attached to the outer surface of the cabin are cleaned through the flushing effect of water flow outside the shell (9), the friction effect of adjacent shells (9), or the friction effect of a cleaning device on the outer surface of the rotating shell (9).

8. The underwater equipment cabin according to claim 1 or 4, characterized in that: The outer shell (9) of the cabin (100) is concentrically sleeved on the outer side of the inner liner (1); the inner liner (1) is supported and fixed on a support (200); and the outer shell (9) rotates continuously or intermittently relative to the inner liner (1).

9. The underwater equipment cabin according to claim 8, characterized in that: One or more cabins (100) are arranged in the support (200), and the multiple cabins (100) are arranged in any one of a chain, tree, and ring shape. The outer shell (9) of at least one of the multiple cabins (100) can rotate relative to the support (200), or the outer shell (9) of at least one cabin (100) can drive the outer shells (9) of multiple cabins (100) to rotate.

10. The underwater equipment compartment according to claim 8, characterized in that: When a plurality of cabins (100) are arranged, an enhanced friction cleaning device is provided on the surface of the outer shell (9); when a single cabin (100) is arranged, an enhanced friction cleaning device is provided on the support (200).

Images