Hydraulic power station for saturation diving with temperature control system

Abstract

The application discloses a kind of saturated diving hydraulic power station of temperature control system configuration, and hydraulic power station is set in the container on deck, provides hydraulic power for the lifting device of diving bell of saturated diving system, and hydraulic power station includes oil tank, electric pump unit, hydraulic valve group and air cooler connected in sequence, air cooler includes fan and radiator, air flow of fan flows to electric pump unit after passing through radiator, air cooler is connected with bypass pipeline in parallel, oil temperature heater is arranged at the bottom of oil tank near the side of oil suction port, temperature sensor is arranged in oil tank, water tank is arranged around the lower outer side of oil tank, seawater stored in water tank can be heat exchanged with hydraulic oil of oil tank, and water tank includes water inlet and water outlet.The application integrates oil temperature heating, air cooling and seawater heat exchange functions, can realize dynamic switching control according to hydraulic oil temperature change, effectively improves the reliability and stability of hydraulic system in deep-sea high-strength operation environment.

Description

Technical Field

[0001] This application belongs to the field of saturation diving technology, specifically relating to a hydraulic power station for saturation diving equipped with a temperature control system. Background Technology

[0002] Saturation diving is a diving method suitable for long-duration operations at great depths. Its basic principle is that during descent, the diver's body absorbs inert gases until saturation is reached. Afterward, regardless of the duration of the dive, the desaturation time remains constant. Therefore, saturation divers only need to undergo a single, unified decompression process after the mission, significantly improving the efficiency of deep-sea operations. Saturation diving is widely used in tasks such as the installation and maintenance of offshore oil platforms, laying subsea pipelines, deep-sea salvage, submarine rescue, and emergency response. To support these high-risk, long-duration, and high-pressure diving operations, hydraulic power stations are typically used to provide continuous and stable hydraulic power to critical equipment such as the diving bell deployment device. In existing technologies, hydraulic power stations are usually located in containers on the ship's deck. Their hydraulic systems bear significant loads and generate substantial heat during operation, resulting in drastic fluctuations in hydraulic oil temperature. Therefore, high demands are placed on the temperature control system. To ensure reliable operation of the hydraulic system, the oil temperature must be controlled within a suitable range (e.g., 30℃~50℃) to prevent oil deterioration due to high temperatures or difficulties in oil suction due to low temperatures.

[0003] However, existing hydraulic power station temperature control systems are generally simplified, typically using only air-cooled coolers or heating rods for unidirectional adjustment, lacking consideration for temperature changes in complex marine environments, multi-source heat dissipation, comprehensive monitoring, and precise control. These general-purpose temperature control systems are not optimized for the specific application scenario of saturation diving, and cannot adapt to the enclosed, high-humidity, and high-heat-load operating conditions of shipboard containers. They often suffer from problems such as temperature control lag, insufficient cooling effect, or slow heating response, affecting the stability and service life of the hydraulic system. Existing hydraulic power stations lack compactness, with heaters, coolers, and other equipment occupying large spaces and being difficult to maintain. Furthermore, existing systems fail to fully utilize seawater as a natural cold source, resulting in low energy efficiency, limited heat exchange methods, and low system integration. Therefore, there is an urgent need for a hydraulic power station temperature control system with a more rational structure, more sensitive response, more precise temperature control, and suitability for the actual working conditions of saturation diving, to improve the safety and reliability of deep-sea operations. Summary of the Invention

[0004] In view of the defects in the prior art, the application provides a saturated diving hydraulic power station provided with a temperature control system, which integrates oil temperature heating, air cooling and seawater heat exchange functions, can realize dynamic switching control according to the change of hydraulic oil temperature, effectively improves the reliability and stability of the hydraulic system in a deep-sea high-intensity operation environment, and is suitable for various saturated diving operation scenes.

[0005] To achieve the above object, the technical scheme of the application is as follows:

[0006] The saturated diving hydraulic power station provided with the temperature control system is arranged in a container on a deck, provides hydraulic power for a hoisting device of a diving bell of a saturation diving system, and comprises an oil tank, an electric pump unit, a hydraulic valve group and an air cooler connected in sequence.

[0007] Preferably, the water inlet of the water tank is connected to a drainage pipeline of the diving bell or extracts seawater from the sea, the water outlet of the water tank is connected to a spraying pipeline, the end of the spraying pipeline is provided with a universal nozzle, the universal nozzle is located between the radiator and the electric pump unit, and can selectively spray seawater towards the radiator or the motor part of the electric pump unit, and a seawater purifier is arranged on the spraying pipeline and used for filtering corrosion components in the seawater.

[0008] Preferably, the bottom of the radiator is provided with a first water collecting disc, the bottom of the motor part of the electric pump unit is provided with a second water collecting disc, and the seawater in the first water collecting disc and the second water collecting disc is collected into the backwater inlet of the water tank.

[0009] Preferably, the bottom of the water tank is provided with a drainage port.

[0010] Preferably, the water tank is further connected to a plurality of groups of seawater heat exchange pipes, the seawater heat exchange pipes are immersed in the oil tank, and when heat exchange is needed, the seawater in the water tank is introduced into the oil tank to exchange heat with the hydraulic oil.

[0011] Preferably, a control unit is further included, which monitors the oil temperature based on the temperature sensor, controls the oil temperature heater to start when the oil temperature is lower than 15 DEG C, controls the first regulating valve to open and the second regulating valve to close when the oil temperature is higher than 60 DEG C, and controls the hydraulic oil to be cooled by the radiator of the air cooler.

[0012] Preferably, the annular inner wall of the water tank is in contact with the shell of the oil tank, and the oil temperature heater adopts an electric heating pipe.

[0013] Preferably, an annular gap is arranged between the annular inner wall of the water tank and the shell of the oil tank, the oil temperature heater adopts a heat pump cycle, the oil temperature heater is a condenser of the heat pump, and a corresponding evaporator of the oil temperature heater is located in the water tank to guide the cold produced by the evaporator into the seawater in the water tank.

[0014] Preferably, when the temperature sensor in the oil tank detects that the oil temperature is higher than 50 DEG C, the control unit controls the heat conduction mechanism to work to guide the heat conduction material into the annular gap, so that the oil tank and the water tank are in heat exchange.

[0015] Preferably, the hydraulic valve group includes a control valve group and a balance valve group, the control valve group includes one pressure regulating valve group, one main control valve group, one auxiliary control valve group, one emergency operation valve group and one auxiliary valve group, and the balance valve group includes two davit winch balance valve groups, two mooring winch balance valve groups, two umbilical winch safety valve groups and one folding arm balance valve group, and each valve group is connected with the electric pump unit through a pipeline.

[0016] The present application has the following advantages:

[0017] Firstly, the application builds a multi-path, dynamically switchable temperature control structure by integrating an oil temperature heater, an air cooler and a seawater heat exchange system in the hydraulic power station, which can automatically start the heating or cooling circuit according to the change of the hydraulic oil temperature, ensure that the oil temperature is always maintained within the set range, effectively avoid the deterioration of the hydraulic oil, the decline of the system efficiency caused by the over-high oil temperature, or the oil absorption difficulty and the abnormal system start caused by the over-low oil temperature, and improve the operation stability of the hydraulic system in the high pressure environment of the saturation diving. Secondly, the application uses the seawater resource in the marine environment where the ship is located, sets the water tank and the seawater heat exchange pipe around the oil tank, and combines the natural cold source to perform heat exchange treatment on the hydraulic oil, which breaks through the cooling mode of the traditional hydraulic system relying on the air cooler only, improves the cooling efficiency, reduces the energy consumption dependence on the fan system, has good energy utilization effect and environmental adaptability, and is especially suitable for the high temperature and high humidity, space closed shipborne container environment. Thirdly, the application can realize the directional spraying auxiliary cooling of the motor part of the air cooling radiator or the electric pump unit by setting the spraying pipeline and the universal nozzle, can realize the rapid local cooling of the key components in the extreme working condition, helps to prevent the overheating failure of the equipment, prolongs the service life of the system components, and enhances the safety and reliability of the equipment in the process of continuous high load operation. In addition, the application sets the annular gap filled with heat-conducting material between the oil tank and the water tank, and uses the heat pump cycle for cold and hot bidirectional adjustment, further enhances the controllability of heat exchange and the system integration, so that the temperature control system can not only realize the heating or cooling function switching in different stages, but also can improve the heat transfer efficiency and the system energy saving effect, and has high engineering applicability and technical popularization value. BRIEF DESCRIPTION OF DRAWINGS

[0018] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are schematic and not intended to be limiting of the embodiments, and in which like reference numerals designate similar elements in the figures and wherein:

[0019] Figure 1 The overall schematic diagram of the hydraulic power station shown in the embodiments of the application;

[0020] Figure 2 The structural schematic diagram of the oil tank and the water tank of one of the embodiments of the application;

[0021] Figure 3 The top view of the oil tank and the water tank of one of the embodiments of the application;

[0022] Figure 4 The structural schematic diagram of the oil tank and the water tank of another embodiment of the application;

[0023] Figure 5 The top view of the oil tank and the water tank of another embodiment of the application.

[0024] Reference: 1 - oil tank; 101 - oil suction port; 102 - temperature sensor; 2 - electric pump unit; 201 - second water collecting pan; 3 - hydraulic valve group; 4 - air cooler; 401 - air fan; 402 - radiator; 403 - first water collecting pan; 5 - bypass pipeline; 6 - first regulating valve; 7 - second regulating valve; 8 - oil temperature heater; 9 - water tank; 901 - water inlet; 902 - water outlet; 903 - backwater inlet; 904 - drain outlet; 10 - spray pipeline; 11 - universal nozzle; 12 - seawater purifier; 13 - seawater heat exchange pipe; 14 - annular gap. DETAILED DESCRIPTION

[0025] For the purpose of promoting the understanding of the present application, the present application will be described in further detail below with reference to the drawings and specific embodiments. It is to be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar terms used in the description are for the purpose of illustration only. In the description of the present application, the terms "first", "second" are used only for the purpose of description and should not be construed as indicating relative importance or implying the number of the technical features indicated. Thus, unless otherwise specified, the features defined with "first", "second" can explicitly or implicitly include one or more of the features; the meaning of "plurality" is two or more. The term "comprising" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof can be present or added.

[0026] In addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. All technical and scientific terms used in the specification have the same meaning as understood by the person skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not used to limit the present application. The term "and / or" used in the specification includes any and all combinations of one or more related listed items.

[0027] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0028] The embodiment provides a hydraulic power station for saturation diving configured with a temperature control system. Figures 1-5 The hydraulic power station is arranged in a container on a deck, facilitating overall transportation, centralized arrangement and system integration, improving equipment layout efficiency and marine environment adaptability, solving the demand for high-response and high-reliability supply of hydraulic energy in the lifting process of the diving bell, and being a core supporting equipment for saturation diving operations.

[0029] The hydraulic power station comprises an oil tank 1, an electric pump unit 2, a hydraulic valve group 3 and an air cooler 4 connected in sequence. The oil tank 1 is used for storing and buffering hydraulic oil, the hydraulic oil can be selected as No. 46 low-temperature anti-wear hydraulic oil, the electric pump unit 2 pressurizes and delivers the hydraulic oil, the hydraulic valve group 3 is used for controlling the flow direction and pressure of the oil, and realizes driving control of a plurality of operation units, and the air cooler 4 is used for cooling the high-temperature hydraulic oil flowing back, and guarantees temperature stability of the system under high-load working conditions. The air cooler 4 comprises a fan 401 and a radiator 402, air flow of the fan 401 flows to the electric pump unit 2 after passing through the radiator 402, the fan 401 enhances heat exchange efficiency between the radiator 402 and external air through forced air supply, the air flow further flows to the electric pump unit 2, and is used for surface cooling of motor components, thereby improving equipment operation stability. The air cooler 4 is connected in parallel with a bypass pipeline 5, a first regulating valve 6 is arranged at an inlet end of the air cooler 4, and a second regulating valve 7 is arranged on the bypass pipeline 5. The first regulating valve 6 and the second regulating valve 7 are arranged to realize switching of the air cooling circuit and the bypass circuit, the air cooling path can be closed and the bypass pipeline 5 can be opened when the hydraulic oil temperature is low, so that the oil directly flows to accelerate system response speed, and when the oil temperature is high, the first regulating valve 6 is opened and the second regulating valve 7 is closed, so that the oil is guided to pass through the radiator 402 for cooling treatment. An oil temperature heater 8 is arranged at the bottom of the oil tank 1 close to one side of an oil suction port 101, can preferentially heat the hydraulic oil sucked in during a low-temperature starting stage, improves starting efficiency and reduces low-temperature wear, and a temperature sensor 102 is arranged in the oil tank 1, and the temperature sensor 102 monitors the oil temperature in the oil tank 1 in real time, and provides temperature control adjustment basis for oil temperature control.

[0030] The lower outer side of the oil tank 1 is surrounded by a water tank 9, which stores seawater to exchange heat with the hydraulic oil in the oil tank 1. The water tank 9 includes a water inlet 901 and a water outlet 902. The water tank 9 is arranged in a surrounding manner, which not only has a compact structure but also a large heat exchange area. The seawater flowing through the water tank 9 as a natural cooling source exchanges heat with the oil, effectively reducing the oil temperature. The seawater in the water tank 9 can also act as a cold storage medium, having a good heat capacity adjustment effect. By absorbing or releasing heat, the system temperature is balanced, effectively reducing the fluctuation of the oil temperature in the oil tank 1, and improving the stability of the temperature control system. At the same time, the surrounding water tank structure saves space and forms a buffer support ring for the oil tank, which has a certain anti-shaking effect and enhances the anti-shaking ability of the equipment, adapting to complex working conditions in the ship or floating platform environment. The water tank 9 can be made of corrosion-resistant composite materials or coated with a salt-resistant coating on the inner wall to prevent long-term corrosion of the metal structure by salt and chloride ions in seawater.

[0031] Further, the water inlet 901 of the water tank 9 is connected to the drain pipe of the diving bell or seawater is extracted from the sea. The water inlet 901 connected to the drain pipe of the diving bell can recover seawater discharged during the operation on site, reducing the time for external water intake and improving the response efficiency of the system. The seawater can also be directly extracted from the sea as a natural cooling source to continuously supplement the cooling medium. The water outlet 902 of the water tank 9 is connected to the spray pipeline 10, which guides the seawater in the water tank 9 to the spray system for subsequent spray cooling process, forming a water source circulation path. The end of the spray pipeline 10 is provided with a universal spray head. The spray pipeline 10 delivers water to the spray head structure that can be adjusted in direction. The universal spray head 11 is located between the radiator 402 and the electric pump unit 2, and can selectively spray seawater towards the radiator 402 or the motor part of the electric pump unit 2. The universal spray head 11 is arranged to realize targeted cooling of the key heat generating components. When the environmental temperature or load is high, the spray direction can be switched to enhance the heat exchange effect and prevent local overheating from causing failure. A seawater purifier 12 is arranged on the spray pipeline 10 to filter corrosive components in the seawater. The seawater purifier 12 pretreats the water for spraying, effectively removing salt, particles or corrosive ions in the seawater, avoiding crystallization or corrosion deposition on the surface of the air-cooled radiator 402 and the motor housing, and prolonging the service life of the equipment.

[0032] In addition, the bottom of the radiator 402 is provided with a first water collecting tray 403 for collecting the sprayed seawater flowing down from the surface of the radiator 402 after cooling, preventing the seawater from randomly dripping and affecting other equipment, and facilitating unified recycling. The bottom of the motor part of the electric pump unit 2 is provided with a second water collecting tray 201 for receiving the seawater falling on the surface of the motor housing during spraying, avoiding water accumulation and corrosion of the bottom of the motor, and ensuring electrical safety. The seawater in the first water collecting tray 403 and the second water collecting tray 201 is collected into the water return port 903 of the water tank 9, and the collected seawater can flow back into the water tank 9 to form a circulating path, improving the utilization efficiency of water resources and reducing the energy consumption of the entire temperature control system.

[0033] It should be noted that under normal working conditions, the radiator 402 and the motor part of the electric pump unit 2 do not need to be sprayed, and only the fan 401 in the air cooler 4 and the radiator 402 can meet the regular cooling needs of the hydraulic oil. The system runs stably and has low energy consumption by relying on natural wind flow or forced air supply for heat exchange. The spraying structure is mainly used for auxiliary cooling in extreme conditions, such as high ambient temperature, continuous high-load operation or reduced air cooling efficiency. Directional spraying is performed on key parts through the universal spray head 11 to effectively improve the heat dissipation efficiency and prevent local overheating, thereby ensuring that the hydraulic power station can still operate safely and reliably in complex marine environments.

[0034] In the present embodiment, the selection of the radiator 402 and its thermal performance parameters are designed and verified according to the thermal characteristics of the hydraulic oil and the actual heat dissipation requirements of the system. The inlet and outlet temperature difference of the radiator 402 can be estimated according to the following formula:

[0035] ΔT=Q / (V oil ×ρ×C p )

[0036] Wherein:

[0037] ΔT represents the inlet and outlet temperature difference of the radiator, in degrees Celsius (℃);

[0038] Q is the actual heat dissipation of the radiator, in watts (W);

[0039] V oil is the volume flow of the oil, in m 3 / s;

[0040] ρ is the density of the hydraulic oil, in kg / m 3 , and in the present embodiment, ρ=900 kg / m 3 ;

[0041] C pC is the specific heat capacity of the hydraulic oil, in J / (kg·℃), and in this embodiment, C = 2000 J / (kg·℃).

[0042] In combination with the actual application requirements of the hydraulic system, the required heat dissipation capacity is determined to be 100 kW. Under the above parameter conditions, the oil temperature difference ΔT at the inlet and outlet of the radiator is calculated to be about 11°C, which meets the control requirements of the system on the temperature control response speed and the steady-state temperature.

[0043] In this embodiment, the bottom of the water tank 9 is provided with a drain port 904 for adjusting the water storage amount in the water tank 9. When the oil temperature is too low, part of the seawater can be discharged through the drain port 904 to reduce the heat capacity of the water tank, so as to avoid excessive cooling leading to difficulty in starting the system. When the water temperature in the water tank 9 does not meet the cooling or heat exchange requirements, high-temperature or low-temperature seawater can also be discharged in time through the drain port 904, and new seawater can be introduced through the water inlet to maintain the stability of the heat exchange efficiency. In an embodiment, when the oil temperature in the oil tank 1 exceeds a set value, such as 40°C, the water tank 9 can be filled with seawater. The water tank 9 is also connected to a plurality of groups of seawater heat exchange pipes 13, which are immersed in the interior of the oil tank 1. When heat exchange is required, for example, when the oil temperature in the oil tank 1 exceeds 50°C, the seawater in the water tank 9 is introduced into the interior of the oil tank 1 to exchange heat with the hydraulic oil. The pipelines of the seawater heat exchange pipes 13 pass through the inner cavity region of the oil tank 1 and extend into the hydraulic oil without directly contacting the hydraulic oil, and only heat conduction is achieved through the pipe wall, so as to avoid the risk of contamination of the hydraulic oil by seawater and ensure the cleanliness of the oil. The arrangement mode of the seawater heat exchange pipes 13 is flexible, and multiple points or groups can be configured according to the spatial structure of the oil tank 1. Those skilled in the art can select an appropriate mode to achieve efficient heat exchange according to the actual arrangement requirements.

[0044] The embodiment also includes a control unit that monitors the oil temperature based on the temperature sensor 102. The control unit receives the temperature data of the hydraulic oil in the oil tank 1 collected by the temperature sensor 102 in real time, realizes the judgment of the current working condition, and automatically adjusts the control strategy. The temperature sensor 102 is arranged inside the oil tank 1 and can accurately reflect the temperature rising trend of the oil, providing accurate basis for the control logic. When the oil temperature is lower than 15℃, the control oil heater 8 is started to avoid difficulty in low-temperature oil absorption or start-up delay, improve the adaptability and reliability of the system in low-temperature environment, and when the temperature exceeds 30℃, the oil heater 8 is automatically stopped to avoid system fluctuations caused by excessive heating. When the oil temperature is higher than 60℃, the first regulating valve 6 is opened and the second regulating valve 7 is closed, the first regulating valve 6 is communicated with the oil inlet end of the air cooler 4, and the second regulating valve 7 is located on the bypass pipeline 5. Through the above switching control, the hydraulic oil flows to the air cooling circuit, so that the hydraulic oil passes through the radiator 402 of the air cooler 4 for heat dissipation, and the fan 401 works synchronously to blow cold air through the radiator 402 to quickly remove the excess heat in the hydraulic oil, thereby controlling the oil temperature within the set range and avoiding overheating to cause system performance degradation or hydraulic oil aging. In an optional embodiment, the hydraulic system can be provided with a high-temperature protection strategy. When the oil temperature in the oil tank 1 continues to rise and exceeds the temperature threshold, for example, 70℃, and it is judged that the temperature is still rising, the control unit will automatically enter the emergency mode, forcibly open the spray pipeline 10, and open all the water tank heat exchange pipes 13 for emergency cooling, while sending an alarm signal to prompt manual intervention, to ensure that the system does not fail due to overheating.

[0045] Please refer to Figures 2-3 In an embodiment, the annular inner wall of the water tank 9 contacts the shell of the oil tank 1, and the water tank 9 is arranged in a surrounding structure to fit the outer wall of the oil tank 1. This structure saves space and provides stable surrounding support, which helps to slow down the relative displacement of the oil tank 1 during ship rocking, improves the anti-interference ability and overall rigidity of the system. The contact structure also facilitates direct heat conduction between the water tank 9 and the oil tank 1, eliminating the need for intermediate media or heat exchange components, making the heat exchange process more efficient and reliable. The annular water tank 9 ensures a large contact area on the outer surface of the oil tank 1, allowing uniform heat transfer within one circle, avoiding local overcooling or overheating, and helping to maintain overall stability of the hydraulic oil temperature. The oil heater 8 uses an electric heating tube for heating. As a mature and reliable heating element, the electric heating tube can achieve stable and continuous heating output, with simple structure and fast response speed, suitable for rapid heating when the oil temperature is below the normal working range, ensuring that the hydraulic oil maintains appropriate viscosity in low-temperature environment, improving the starting efficiency and running stability of the entire hydraulic system.

[0046] In this embodiment, to meet the preheating needs of the hydraulic oil before starting, the heating capacity of the electric heating tube can be estimated as follows:

[0047] N = C x p x V x AQ / T,

[0048] Wherein:

[0049] N is the heating capacity of the electric heating tube, in watts (W) ;

[0050] C is the specific heat capacity of the hydraulic oil, the value range is 1680-2094 J / (kg·℃), in this embodiment, C = 2000 J / (kg·℃) can be taken;

[0051] p is the density of the hydraulic oil, p = 900 kg / m 3 ;

[0052] V is the volume of the hydraulic oil in the oil tank, in this embodiment, V = 1500 L (i.e. 1.5 m 3 ) ;

[0053] AQ is the temperature rise required for heating, in this embodiment, AQ = 12℃ is set;

[0054] T is the heating time, the value is 2 hours (i.e. 7200 seconds).

[0055] Substitute the calculation can be obtained:

[0056] N = 2000 x 900 x 1.5 x 12 / 7200 = 4500 W;

[0057] Considering the thermal efficiency of the electric heating tube, set = 0.8, then the required electric heating tube electric power P is:

[0058] P = N / = 4500 / 0.8 = 5625 W

[0059] Based on the above calculation results, in order to ensure that the oil temperature reaches the preset value within a limited time, two AC380V, rated power of 3kW electric heater is selected for configuration in this embodiment, which can meet the overall heating capacity demand, and is convenient for arrangement and control, with good engineering adaptability.

[0060] Please refer to Figures 4-5In another embodiment, an annular gap 14 is provided between the annular inner wall of the water tank 9 and the shell of the oil tank 1, which effectively separates the oil tank 1 from the water tank 9 in structure, and no heat exchange occurs between the seawater and the oil tank 1 when the hydraulic oil does not need to be cooled, avoiding unnecessary heat loss or excessive cooling, forming a controllable heat exchange logic, and the design realizes dynamic isolation and precise activation of the cooling path. The oil temperature heater 8 adopts a heat pump cycle, which is a closed loop system that realizes heat absorption at the cold end and heat release at the hot end through a compressor refrigerant, and has the advantages of high energy efficiency and bidirectional temperature adjustment. The heat pump system includes four basic components: compressor, condenser, expansion valve and evaporator. The refrigerant is compressed, condensed, throttled and evaporated in the loop in turn, forming a continuous heat transfer process. In this embodiment, the oil temperature heater 8 is the condenser of the heat pump, which is arranged at the bottom of the oil tank 1 and can release the heat of the high-temperature and high-pressure refrigerant in the heat pump system to the oil tank 1, so that the hydraulic oil is heated and warmed up to meet the low-temperature starting requirement. The evaporator corresponding to the oil temperature heater 8 is located in the water tank 9, and the evaporator absorbs cold energy by heat exchange with the seawater in the water tank 9, forming a stable heat cycle, and the cold energy generated by the evaporator is introduced into the seawater in the water tank 9, which can realize the recovery and storage of cold energy. When the hydraulic oil temperature is raised, the system can first store the cold energy in the seawater in the water tank 9, and then reuse the cold energy through heat exchange between the water tank 9 and the oil tank 1 when the oil temperature rises to the stage that needs to be cooled, thereby reducing energy consumption and improving the overall efficiency of the temperature control system. In addition, the heat pump cycle can also be equipped with a reversing control component such as a four-way valve to switch the refrigeration and heating modes in special working conditions, thereby enhancing the flexibility and fault tolerance of the system. In this application, when the air cooler fails, the control unit can switch the heat pump operating mode, so that the heater assembly originally used as the condenser works in the evaporation state, directly absorbs heat from the hydraulic oil in the oil tank, and conducts the heat to the evaporator on the water tank side. At this time, the evaporator becomes a condenser, which quickly releases the system heat through heat exchange with seawater, realizes direct cooling of the hydraulic oil, and improves the temperature control reliability in extreme environments.

[0061] In this embodiment, when the temperature sensor 102 in the oil tank 1 detects that the oil temperature is higher than 50℃, the heat needs to be dissipated in time to avoid deterioration of the oil performance, and the control unit controls the heat conduction mechanism to work, and the heat conduction material is introduced into the annular gap 14. After the heat conduction material is filled into the annular gap 14, the oil tank 1 and the water tank 9 are effectively coupled in structure, so that the oil tank 1 and the water tank 9 exchange heat, the seawater can absorb the heat of the hydraulic oil and realize cold energy transfer, thereby quickly reducing the oil temperature and ensuring that the hydraulic system maintains in a safe and stable working range.

[0062] Specifically, the heat-conducting material can adopt a heat-conducting block, for example, a heat-conducting block with a core of a graphene composite material with high heat-conducting performance, which has excellent heat-conducting efficiency and structural stability and is suitable for quickly realizing heat transfer in a limited space. The heat-conducting block is inserted into the annular gap 14 through a mechanical structure, for example, the heat-conducting block can be driven by an electric screw mechanism, a direct heat connection channel can be established between the water tank 9 and the oil tank 1, and the two form a high-efficiency heat exchange path. When cooling is needed, the heat-conducting block is inserted to activate the heat exchange function, and when cooling is not needed, the heat-conducting block is extracted, which is equivalent to realizing a controllable on-off heat switch mechanism, so that the system can flexibly adjust the heat exchange state under different working conditions, and the response capability and energy-saving effect of the temperature control system are improved. The structural form of the heat-conducting material is not limited, and other mechanisms with heat-conducting function can also be used to realize heat exchange control. This belongs to the content that can be flexibly designed by those skilled in the art according to specific application requirements, and will not be described here.

[0063] In the embodiment, the hydraulic valve group 3 includes a control valve group and a balance valve group. The hydraulic valve group 3 is the core regulating component of the hydraulic system, responsible for comprehensive control of the pressure, flow and direction of the fluid, and realizes precise scheduling of different actuators. The control valve group includes one pressure regulating valve group, one main control valve group, one auxiliary control valve group, one emergency operation valve group and one auxiliary valve group. The pressure regulating valve group is used to stabilize the working pressure of the system main circuit to prevent pressure fluctuations from impacting the system. The main control valve group and the auxiliary control valve group are used for daily operation control and multi-circuit switching, respectively. The emergency operation valve group provides a manual switching channel in the case of power failure or loss of control. The auxiliary valve group can be used for the control of special functions, such as pressure compensation and flow regulation. The balance valve group includes two bell winch balance valve groups, two cable guide winch balance valve groups, two umbilical winch safety valve groups and one folding arm balance valve group. The balance valve group is mainly used for load holding and overload protection of external actuators. The bell winch and the balance valve group are used in pairs to achieve smooth speed regulation and load positioning during lifting. The cable guide winch balance valve group is used to control the cable tension to prevent impact load. The umbilical winch safety valve group ensures the safety of the umbilical winch when the load changes suddenly. The folding arm balance valve group is used for balance control of the folding arm mechanism to avoid return impact. Each valve group is connected to the electric pump unit 2 through a pipeline. The electric pump unit 2 provides the power source for the system. After the valve group is connected to the electric pump unit 2 through a pipeline, a closed hydraulic circuit is formed, realizing the complete function link from oil pressurization, control to execution, ensuring the stable operation and response reliability of the system in complex underwater operations.

[0064] In summary, the application discloses a kind of saturated diving hydraulic power station of configuration temperature control system, the hydraulic power station is arranged in the container on deck, including oil tank 1, electric pump unit 2, hydraulic valve group 3 and air cooler 4 connected in sequence, air cooler 4 includes fan 401 and radiator 402, and is connected with bypass line 5 in parallel, oil tank 1 bottom is equipped with oil temperature heater 8 and temperature sensor 102, and external water tank 9 is arranged around.This application is integrated with wind cooling, water cooling, heating, intelligent control, seawater utilization and heat conduction switching and other multiple function paths, and a multi-mode oil temperature control system is constructed, which is fast in response, accurate in control, compact in structure and strong in adaptability, effectively improves the thermal management capability of hydraulic power station in the process of saturated diving operation, and the system can intelligently select the optimal heat dissipation mode according to the oil temperature state, which not only ensures the long-term stable operation of the hydraulic system, but also reduces energy consumption and maintenance cost, avoids performance degradation and fault risk caused by oil temperature fluctuation.The application provides a specially optimized hydraulic temperature control solution for the characteristics of long operation time, high load and complex environment in saturated diving field, and has strong engineering adaptability and promotion value.Through the innovative integration of air cooling path, water tank structure, heat conduction component and heat exchange form, the safety, reliability and intelligent level of the hydraulic system in deep sea environment are improved, which has important significance for improving the localization level of saturated diving equipment and ensuring the safety of deep sea operation.

[0065] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; under the idea of the present application, the technical features in the above examples or different examples can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for simplicity; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hydraulic power station for saturation diving equipped with a temperature control system, the hydraulic power station being installed in a container on a deck, providing hydraulic power for the hoisting device of the diving bell in a saturation diving system, characterized in that, The hydraulic power station includes an oil tank (1), an electric pump unit (2), a hydraulic valve group (3), and an air cooler (4) connected in sequence. The air cooler (4) includes a fan (401) and a radiator (402). The airflow from the fan (401) flows to the electric pump unit (2) after passing through the radiator (402). The air cooler (4) is connected in parallel with a bypass pipe (5). A first regulating valve (6) is provided at the inlet end of the air cooler (4), and a second regulating valve (7) is provided on the bypass pipe (5). An oil temperature heater (8) is provided on the bottom of the oil tank (1) near the oil suction port (101). A temperature sensor (102) is provided inside the oil tank (1). A water tank (9) is arranged around the lower outer side of the oil tank (1). The water tank (9) stores seawater that can react with the hydraulic oil in the oil tank (1). The water tank (9) includes an inlet (901) and an outlet (902). An annular gap (14) is provided between the annular inner wall of the water tank (9) and the shell of the oil tank (1). The oil temperature heater (8) adopts a heat pump cycle. The oil temperature heater (8) is the condenser of the heat pump. The evaporator corresponding to the oil temperature heater (8) is located in the water tank (9). The cooling energy generated by the evaporator is introduced into the seawater in the water tank (9). When the temperature sensor (102) in the oil tank (1) detects that the oil temperature is higher than 50°C, the control unit controls the heat conduction mechanism to work and introduces the heat conduction material into the annular gap (14) so ​​that the oil tank (1) and the water tank (9) can exchange heat. The heat conduction material is a heat conduction block. When cooling is required, the heat conduction block is inserted to activate the heat exchange function. When cooling is not required, the heat conduction block is pulled out.

2. The saturation diving hydraulic power station with a temperature control system as described in claim 1, characterized in that, The inlet (901) of the water tank (9) is connected to the drainage pipe of the diving bell or to draw seawater from the ocean. The outlet (902) of the water tank (9) is connected to the spray pipe (10). A universal nozzle (11) is provided at the end of the spray pipe (10). The universal nozzle (11) is located between the radiator (402) and the electric pump unit (2). It can selectively spray seawater toward the motor part of the radiator (402) or the electric pump unit (2). A seawater purifier (12) is provided on the spray pipe (10) to filter corrosive components in the seawater.

3. The saturation diving hydraulic power station with a temperature control system according to claim 2, characterized in that, The bottom of the radiator (402) is provided with a first water collection plate (403), and the bottom of the motor part of the electric pump unit (2) is provided with a second water collection plate (201). The seawater in the first water collection plate (403) and the second water collection plate (201) is collected to the return water port (903) of the water tank (9).

4. The saturation diving hydraulic power station with a temperature control system according to claim 3, characterized in that, The bottom of the water tank (9) is provided with a drain outlet (904).

5. The saturation diving hydraulic power station with a temperature control system according to claim 4, characterized in that, The water tank (9) is also connected to several sets of seawater heat exchange pipes (13). The seawater heat exchange pipes (13) are immersed in the oil tank (1). When heat exchange is required, the seawater in the water tank (9) is introduced into the oil tank (1) to exchange heat with the hydraulic oil.

6. The saturation diving hydraulic power station with a temperature control system according to claim 5, characterized in that, It also includes a control unit, which monitors the oil temperature based on the temperature sensor (102). When the oil temperature is below 15°C, it controls the oil temperature heater (8) to start. When the oil temperature is above 60°C, it controls the first regulating valve (6) to open and the second regulating valve (7) to close. The hydraulic oil is cooled by the radiator (402) of the air cooler (4).

7. The saturation diving hydraulic power station with a temperature control system according to claim 1, characterized in that, The hydraulic valve group (3) includes a control valve group and a balance valve group. The control valve group includes a pressure regulating valve group, a main control valve group, a secondary control valve group, an emergency operation valve group, and an auxiliary valve group. The balance valve group includes two bell winch balance valve groups, two cable winch balance valve groups, two umbilical winch safety valve groups, and one folding arm balance valve group. Each valve group is connected to the electric pump unit (2) through pipelines.

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