Hydraulic circulation control system

Abstract

The invention relates to the field of hydraulic control, in particular to a hydraulic circulation control system which comprises a hydraulic pump, an energy accumulator, a pressure detection module, a pressure demand determination module, a control adjustment module and an execution detection module. The hydraulic oil pressure is monitored in real time through the pressure detection module, the operation mode recognized by the pressure requirement determining module is combined, the control adjusting module adjusts the power output of the hydraulic pump and the operation state of the energy accumulator in real time, it is ensured that the system can make a quick response according to actual requirements, and the optimal hydraulic pressure level is maintained; the energy accumulator enables the system to store excess energy when the pressure exceeds a target value and release the stored energy when the pressure is insufficient and abnormal pressure loss is generated, the energy utilization efficiency of the system is remarkably improved, energy waste is reduced, by distinguishing pressure demand modes, the system can flexibly adjust the response strategy according to different operation scenes, and the energy utilization rate of the system is improved. The adaptability and performance of the amphibious vehicle in various complex environments are improved.

Description

Technical Field

[0001] The invention relates to the field of hydraulic control, and in particular to a hydraulic circulation control system. Background Art

[0002] As a special vehicle that can travel on land and in water, the hydraulic control system of an amphibious vehicle plays a vital role in vehicle performance. It is widely used in power transmission and control. Traditional hydraulic systems usually use fixed displacement pumps and overflow valves to adjust system pressure, which has high energy consumption and low efficiency.

[0003] The patent document with Chinese patent publication number CN114352588A discloses a multifunctional water hydraulic transmission system, including a variable pump, a main control hydraulic valve, a quantitative motor, an electric control handle, a controller, an oil tank, an electromagnetic reversing valve, a control valve group, an air conditioning motor, a wave plate cylinder, an intake shutter cylinder, and an exhaust shutter cylinder. The variable pump is connected to the free end of the engine through an elastic coupling, the S port of the variable pump sucks oil from the oil tank, the P port of the variable pump is connected to the P port of the main control hydraulic valve, the LS port of the main control hydraulic valve is connected to the LS port of the variable pump, the variable pump, the main control hydraulic valve, and the T port of the quantitative motor are respectively connected to the oil tank, the A and B ports of the first and second joints of the main control hydraulic valve are respectively connected to the A and B ports of the quantitative motor, and the main control The A port of the third hydraulic valve is connected to the P port of the first solenoid reversing valve, the A port of the first solenoid reversing valve is connected to the A port of the air-conditioning motor, the B port of the first solenoid reversing valve is connected to the P port of the second solenoid reversing valve in series, the A port of the second solenoid reversing valve is connected to the P port of the wave-breaking plate control valve group, the B port of the second solenoid reversing valve is connected to the P1 port of the control valve group, the T port of the control valve group is connected to the T port of the wave-breaking plate control valve group and the B port of the air-conditioning motor and then connected to the B port of the third main control hydraulic valve, the A and B ports of the control valve group are respectively connected to the A and B ports of the intake shutter cylinder and the exhaust shutter cylinder, the electric control handle and the controller, the controller and the electromagnets of each unit on the main control hydraulic valve, and the controller and the driver terminal are all connected by cables.

[0004] It can be seen that in the prior art, it is impossible to adaptively control the hydraulic oil pressure in real time according to different situations, resulting in high energy consumption and low efficiency of the amphibious vehicle. Summary of the invention

[0005] To this end, the present invention provides a hydraulic circulation control system to overcome the problem in the prior art that the hydraulic oil pressure cannot be adaptively controlled in real time according to different situations, resulting in high energy consumption and low efficiency of amphibious vehicles.

[0006] To achieve the above object, the present invention provides a hydraulic circulation control system, comprising:

[0007] A hydraulic pump, which is used to pressurize the hydraulic oil when the amphibious vehicle is running, so that the pressure value of the hydraulic oil reaches a target pressure value;

[0008] an accumulator connected to the hydraulic pump, for storing the energy of the hydraulic oil when the hydraulic oil pressure value exceeds the target pressure value, and for releasing the stored energy when the system pressure is lower than the required pressure;

[0009] A pressure detection module, connected to the hydraulic pump, for detecting the pressure value of the hydraulic oil in real time to obtain a real-time hydraulic oil pressure value;

[0010] a pressure demand determination module, which is connected to the pressure detection module and is used to receive operation information to determine a pressure demand mode, including a normal pressure demand mode and a fast pressure demand mode;

[0011] a control and regulation module, which is connected to the pressure detection module, the pressure demand determination module, the hydraulic pump and the accumulator, and is used to control and regulate the power of the hydraulic pump and the operation of the accumulator according to the pressure demand mode;

[0012] An execution detection module is connected to the pressure demand determination module and the control and regulation module, and is used to periodically detect the real-time transmission power of the actuator, determine whether abnormal pressure loss occurs in the flow of hydraulic oil according to the change in the transmission power, and adjust the released energy of the accumulator when it is determined that abnormal pressure loss occurs.

[0013] Furthermore, the execution detection module calculates a real-time power change value based on the detected real-time operating power, compares the real-time power change value with a preset power change threshold, determines whether the pressure demand mode has changed when the real-time power change value is greater than the preset power change threshold, and determines whether abnormal pressure loss occurs based on the determination result.

[0014] Furthermore, the control and regulation module includes an energy storage determination unit and a release determination unit.

[0015] The energy storage determination unit is used to control the energy storage unit to store energy of the hydraulic oil when the real-time hydraulic oil pressure value detected by the pressure detection module is greater than or equal to the target pressure value;

[0016] The release determination unit is used to control the release unit to release the stored energy when the real-time hydraulic oil pressure value detected by the pressure detection module is less than the target pressure value.

[0017] Furthermore, the control and regulation module also includes a pressure fluctuation compensation unit, which is connected to the release determination unit and is used to detect the pressure fluctuation value of the hydraulic oil in a preset time period. When the pressure fluctuation value is not within the preset pressure fluctuation range, the compensation size of the hydraulic oil by the accumulator is determined according to the positive and negative size of the pressure fluctuation value. The accumulator compensates the hydraulic oil pressure according to the compensation size, wherein,

[0018] The pressure fluctuation value is the sum of the differences between the real-time hydraulic oil pressure detected by the pressure detection module each time within a preset time period and the target pressure.

[0019] Furthermore, when the pressure demand determination module determines that the normal demand mode is in progress, the control and regulation module controls the hydraulic pump to pressurize the hydraulic oil through the first operating power and charges the accumulator, and determines whether to adjust the operating power of the hydraulic pump according to the energy storage condition of the accumulator.

[0020] Furthermore, the accumulator includes an energy storage unit and a release unit.

[0021] The energy storage unit is used to store the energy of the hydraulic oil when the hydraulic oil pressure is greater than or equal to the target pressure value;

[0022] The release unit is used to release the stored energy when the hydraulic oil pressure is less than the target pressure value.

[0023] Furthermore, the accumulator is provided with a first energy storage amount and a second energy storage amount, wherein the first energy storage amount is greater than the second energy storage amount, and when the energy storage unit stores the energy of the hydraulic oil and reaches the first energy storage amount, the storage of the hydraulic oil energy is stopped, and when the release unit releases the stored energy and reaches the second energy storage amount, the release of the stored energy is stopped.

[0024] Furthermore, when the accumulator reaches a first storage capacity, the control and regulation module monitors the energy storage amount in the accumulator, and when the energy storage amount in the accumulator is greater than or equal to the first energy storage amount, the operating power of the hydraulic pump is adjusted, the hydraulic pump pressurizes the hydraulic oil through the second operating power, and controls the accumulator to release energy.

[0025] Further, in the fast demand mode, the control and regulation module controls the hydraulic pump to pressurize the hydraulic oil through the third operating power according to the system pressure demand, and controls the accumulator to release the stored energy.

[0026] Furthermore, the control and adjustment module also includes a fault handling unit, which is connected to the pressure fluctuation compensation unit. When the hydraulic pump pressurizes the hydraulic oil, the pressure detection module detects that the hydraulic oil pressure decreases, and an early warning is issued to shut down the hydraulic pump, and the accumulator releases the stored energy to stop the amphibious vehicle.

[0027] Compared with the prior art, the beneficial effect of the present invention lies in that, by real-time monitoring of the hydraulic oil pressure through the pressure detection module, and combining the operating mode identified by the pressure demand determination module, the control and regulation module can adjust the power output of the hydraulic pump and the operating status of the accumulator in real time, ensuring that the system can respond quickly according to actual needs and maintain the optimal hydraulic pressure level. The accumulator enables the system to store excess energy when the pressure exceeds the target value, and release the stored energy when the pressure is insufficient and abnormal pressure loss occurs, which significantly improves the energy utilization efficiency of the system and reduces energy waste. By distinguishing the pressure demand modes, the system can flexibly adjust its response strategy according to different operating scenarios, thereby improving the adaptability and performance of the amphibious vehicle in various complex environments.

[0028] Furthermore, by continuously comparing the real-time power change value with the preset threshold, the system can capture power fluctuations in a timely manner, and combine the changes in power changes and pressure demand patterns to accurately distinguish between normal power fluctuations and abnormal pressure losses, greatly improving the accuracy of abnormality detection. When abnormal pressure loss is detected, the accumulator is immediately triggered to release energy and replenish pressure in time to ensure the stable operation of the system, which is conducive to the safe and stable operation of amphibious vehicles.

[0029] Furthermore, through the energy storage and release functions, the system can more accurately control the hydraulic oil pressure, ensuring that the system pressure is always maintained within the ideal range, greatly improving the stability and reliability of the hydraulic system.

[0030] Furthermore, through real-time monitoring and dynamic compensation, the system can quickly respond to pressure fluctuations and maintain the hydraulic oil pressure within a preset range, greatly improving the stability of the entire hydraulic system and facilitating the smooth operation of amphibious vehicles. By sampling multiple times within a preset time period and quickly calculating the pressure fluctuation value, timely capture and rapid response to pressure changes are achieved, significantly improving the response speed of the system.

[0031] Furthermore, by judging whether to adjust the operating power of the hydraulic pump according to the energy storage situation of the accumulator, the system can be flexibly adjusted according to actual needs, avoiding energy waste. The system can adjust power according to actual needs, reducing unnecessary energy consumption, thereby achieving the purpose of energy conservation and emission reduction.

[0032] Furthermore, by judging whether to adjust the operating power of the hydraulic pump according to the energy storage situation of the accumulator, the system can be flexibly adjusted according to actual needs, avoiding energy waste. The system can adjust power according to actual needs, reducing unnecessary energy consumption, thereby achieving the purpose of energy conservation and emission reduction.

[0033] Furthermore, by limiting the range of energy storage and release, excessive fluctuations in the hydraulic system pressure are effectively prevented, so that the system pressure is always kept within a controllable range, significantly improving the stability and reliability of the hydraulic system.

[0034] Furthermore, through real-time monitoring and dynamic adjustment of the energy storage capacity of the accumulator, the system can switch the operating power of the hydraulic pump at the optimal time, fully utilize the energy stored in the accumulator, and greatly improve the energy utilization efficiency of the entire system. When the accumulator has sufficient energy storage, the power of the hydraulic pump is reduced from the first operating power to the second operating power, which significantly reduces the energy consumption of the system and is conducive to energy conservation and emission reduction.

[0035] Furthermore, by simultaneously starting the third operating power of the hydraulic pump and the energy release of the accumulator, the system can generate a large amount of pressure in a very short time to meet the instantaneous high pressure demand in the fast demand mode, significantly improving the response speed of the system. The third operating power is usually higher than the power in the normal mode. Combined with the energy released by the accumulator, the system can provide greater pressure output to meet the high pressure demand under special working conditions. By precisely controlling the coordination of the hydraulic pump and the accumulator, the system can maintain a high stability and reduce pressure fluctuations and shocks.

[0036] Furthermore, by real-time monitoring of hydraulic oil pressure changes, the system can capture abnormal situations at the early stage of a fault and take timely response measures, effectively preventing the expansion of the fault and chain reactions. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A system framework diagram of a hydraulic circulation control system according to an embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of a control and regulation module according to an embodiment of the present invention;

[0039] Figure 3 This is a logic judgment diagram of the control and regulation module in the common demand mode according to an embodiment of the present invention;

[0040] Figure 4 It is a structural schematic diagram of an accumulator according to an embodiment of the present invention;

[0041] Figure 5 This is a structural diagram of a hydraulic oil tank used in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0044] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0045] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] See also Figure 1 ,like Figure 1 As shown, it is a system framework diagram of a hydraulic circulation control system according to an embodiment of the present invention;

[0047] Specifically, an embodiment of the present invention provides a hydraulic circulation control system, comprising:

[0048] A hydraulic pump, which is used to pressurize the hydraulic oil when the amphibious vehicle is running, so that the pressure value of the hydraulic oil reaches a target pressure value;

[0049] an accumulator connected to the hydraulic pump, for storing the energy of the hydraulic oil when the hydraulic oil pressure value exceeds the target pressure value, and for releasing the stored energy when the system pressure is lower than the required pressure;

[0050] A pressure detection module, which is connected to the hydraulic pump and is used to detect the pressure value of the hydraulic oil in real time to obtain a real-time hydraulic oil pressure value;

[0051] a pressure demand determination module, which is connected to the pressure detection module and is used to receive operation information to determine a pressure demand mode, including a normal pressure demand mode and a fast pressure demand mode;

[0052] a control and regulation module, which is connected to the pressure detection module, the pressure demand determination module, the hydraulic pump and the accumulator, and is used to control and regulate the power of the hydraulic pump and the operation of the accumulator according to the pressure demand mode;

[0053] An execution detection module is connected to the pressure demand determination module and the control and regulation module, and is used to periodically detect the real-time transmission power of the actuator, determine whether abnormal pressure loss occurs in the flow of hydraulic oil according to the change in the transmission power, and adjust the released energy of the accumulator when it is determined that abnormal pressure loss occurs.

[0054] Specifically, the hydraulic pump is arranged in the hydraulic circuit of the amphibious vehicle, and the start and stop of the amphibious vehicle are controlled by pumping hydraulic oil into different circuits. The pressure detection module is arranged in the circuit behind the hydraulic pump to detect the hydraulic oil pressure value of the hydraulic system. The pressure demand module receives the pressure demand information of the amphibious vehicle during operation. The accumulator can be a piston accumulator or a spring accumulator, etc., which can convert the hydraulic energy of the hydraulic oil into potential energy. Its specific structure is not limited here.

[0055] Specifically, by monitoring the hydraulic oil pressure in real time through the pressure detection module and combining the operating mode identified by the pressure demand determination module, the control and regulation module can adjust the power output of the hydraulic pump and the operating status of the accumulator in real time, ensuring that the system can respond quickly according to actual needs and maintain the optimal hydraulic pressure level. The accumulator enables the system to store excess energy when the pressure exceeds the target value, and release the stored energy when the pressure is insufficient and abnormal pressure loss occurs, which significantly improves the energy utilization efficiency of the system and reduces energy waste. By distinguishing the pressure demand modes, the system can flexibly adjust its response strategy according to different operating scenarios, thereby improving the adaptability and performance of amphibious vehicles in various complex environments.

[0056] Specifically, the execution detection module calculates the real-time power change value based on the detected real-time operating power, compares the real-time power change value with the preset power change threshold, and determines whether the pressure demand mode has changed when the real-time power change value is greater than the preset power change threshold, and determines whether abnormal pressure loss occurs based on the determination result.

[0057] Specifically, when the hydraulic oil flows in the circuit, friction will be generated, resulting in pressure loss. The longer the circuit, the smaller the inner diameter, and the higher the surface roughness, the greater the friction loss. In addition, in the curved part of the circuit, the flow direction of the hydraulic oil changes suddenly, resulting in reduced hydraulic oil energy or partial pressurized hydraulic oil being retained in the circuit, which will also cause pressure loss. The real-time power change value is calculated by comparing the detected real-time operating power with the real-time operating power detected in the previous cycle. When the real-time power change value is greater than the preset power change threshold, it is determined whether the pressure demand mode at this time has changed compared to the pressure demand mode of the previous cycle. When the real-time power change value is less than the preset power change threshold, it is not determined whether the pressure demand mode has changed.

[0058] When it is determined that the pressure demand pattern has changed at this time, it is determined that abnormal pressure loss has occurred;

[0059] When it is determined that the pressure demand pattern has changed at this time, it is determined that no abnormal pressure loss has occurred.

[0060] During the specific implementation process, the preset power change threshold is A0=10kw, and the execution detection module detects that the real-time operating power at this time is Q=70kw. The real-time operating power in the previous cycle is Q'=90kw, then the real-time power change rate A=|Q-Q'|=20kw, A>A0, and the pressure demand pattern at this time has not changed compared with the pressure demand pattern of the previous cycle, then it is determined that abnormal pressure loss occurs at this time, and the accumulator releases energy.

[0061] Specifically, by continuously comparing the real-time power change value with the preset threshold, the system can capture power fluctuations in a timely manner, and combine the changes in power changes and pressure demand patterns to accurately distinguish between normal power fluctuations and abnormal pressure losses, greatly improving the accuracy of abnormality detection. When abnormal pressure loss is detected, the accumulator is immediately triggered to release energy and replenish pressure in time to ensure the stable operation of the system, which is conducive to the safe and stable operation of amphibious vehicles.

[0062] Please continue reading Figure 2 , Figure 3 ,like Figure 2 , Figure 3 As shown, they are respectively a structural diagram of the control and regulation module of an embodiment of the present invention and a logical judgment diagram of the control and regulation module in a normal demand mode of an embodiment of the present invention;

[0063] Specifically, the control and regulation module includes an energy storage determination unit and a release determination unit.

[0064] The energy storage determination unit is used to control the energy storage unit to store energy of the hydraulic oil when the real-time hydraulic oil pressure value detected by the pressure detection module is greater than or equal to the target pressure value;

[0065] The release determination unit is used to control the release unit to release the stored energy when the real-time hydraulic oil pressure value detected by the pressure detection module is less than the target pressure value.

[0066] In the specific implementation process, the target pressure value P0=200MP, when the hydraulic pump working hydraulic oil pressure P=210MP, the energy storage unit starts to store the energy of the hydraulic oil, and when the hydraulic oil pressure P=190MP, the release unit starts to release the stored energy.

[0067] Specifically, through the energy storage and release functions, the system can more accurately control the hydraulic oil pressure, ensuring that the system pressure is always maintained within the ideal range, greatly improving the stability and reliability of the hydraulic system.

[0068] Specifically, the control and regulation module also includes a pressure fluctuation compensation unit, which is connected to the release determination unit and is used to detect the pressure fluctuation value of the hydraulic oil in a preset time period. When the pressure fluctuation value is not within the preset pressure fluctuation range, the compensation size of the hydraulic oil by the accumulator is determined according to the positive and negative size of the pressure fluctuation value. The accumulator compensates the hydraulic oil pressure according to the compensation size, wherein,

[0069] The pressure fluctuation value is the sum of the differences between the real-time hydraulic oil pressure detected by the pressure detection module each time within a preset time period and the target pressure.

[0070] During the specific implementation process, the target pressure is: P0=20MPa, the preset time period T=1s, the preset pressure fluctuation range is -0.2MPa≤Py≤0.2MPa, and the pressure detection frequency is once every 0.2 seconds. Within 1 second, the pressure detection module records 10 pressure readings: 19.8, 20.2, 20.5, 19.7, 19.5. Each reading is subtracted from the target pressure P0=20MPa, and the difference is -0.2, +0.2, +0.5, -0.3, -0.5. The sum of these differences is taken as the pressure fluctuation value Pb=-0.3MPa. Pb is not within the Py range. The accumulator compensates for the hydraulic oil pressure and releases energy to increase the pressure by 0.3MPa.

[0071] Specifically, through real-time monitoring and dynamic compensation, the system can quickly respond to pressure fluctuations and maintain the hydraulic oil pressure within a preset range, greatly improving the stability of the entire hydraulic system and facilitating the smooth operation of amphibious vehicles. By sampling multiple times within a preset time period and quickly calculating the pressure fluctuation value, it achieves timely capture and rapid response to pressure changes, significantly improving the response speed of the system.

[0072] Specifically, when the pressure demand determination module determines that the normal demand mode is in progress, the control and regulation module controls the hydraulic pump to pressurize the hydraulic oil through the first operating power and charges the accumulator, and determines whether to adjust the operating power of the hydraulic pump according to the energy storage condition of the accumulator.

[0073] Specifically, by judging whether to adjust the operating power of the hydraulic pump based on the energy storage situation of the accumulator, the system can be flexibly adjusted according to actual needs, avoiding energy waste. The system can adjust power according to actual needs, reducing unnecessary energy consumption, thereby achieving the goal of energy conservation and emission reduction.

[0074] Please continue reading Figure 4 ,like Figure 4 As shown, it is a schematic diagram of the structure of the accumulator according to an embodiment of the present invention;

[0075] Specifically, the accumulator includes an energy storage unit and a release unit.

[0076] The energy storage unit is used to store the energy of the hydraulic oil when the hydraulic oil pressure is greater than or equal to the target pressure value;

[0077] The release unit is used to release the stored energy when the hydraulic oil pressure is less than the target pressure value.

[0078] Specifically, the accumulator is provided with a first energy storage amount and a second energy storage amount, wherein the first energy storage amount is greater than the second energy storage amount, and when the energy storage unit stores the energy of the hydraulic oil and reaches the first energy storage amount, the storage of the hydraulic oil energy is stopped, and when the release unit releases the stored energy and reaches the second energy storage amount, the release of the stored energy is stopped.

[0079] Specifically, the accumulator stores the energy of the hydraulic oil, and the stored energy K gradually increases: 600kJ→700kJ→800kJ→900kJ→1000kJ. When the first energy storage amount K0=1000kJ is reached, the energy storage process stops automatically.

[0080] Specifically, by limiting the range of energy storage and release, excessive fluctuations in the hydraulic system pressure are effectively prevented, so that the system pressure is always kept within a controllable range, significantly improving the stability and reliability of the hydraulic system.

[0081] Specifically, the control and regulation module monitors the energy storage amount in the accumulator, and adjusts the operating power of the hydraulic pump when the energy storage amount in the accumulator is greater than or equal to the first energy storage amount. The hydraulic pump pressurizes the hydraulic oil through the second operating power and controls the accumulator to release energy.

[0082] During the specific implementation process, the hydraulic pump operates at a first operating power P1=1000kW, the accumulator starts to store energy, and the energy storage amount gradually increases. When the energy storage amount of the accumulator reaches the first energy storage amount K0=1000kJ, the hydraulic pump is reduced from the first operating power P1=1000kW to the second operating power P2=500kW, and at the same time the control and regulation module instructs the accumulator to start releasing energy.

[0083] Specifically, through real-time monitoring and dynamic adjustment of the energy storage capacity of the accumulator, the system can switch the operating power of the hydraulic pump at the optimal time, fully utilize the energy stored in the accumulator, and greatly improve the energy utilization efficiency of the entire system. When the accumulator has sufficient energy storage, the power of the hydraulic pump is reduced from the first operating power to the second operating power, which significantly reduces the energy consumption of the system and is conducive to energy conservation and emission reduction.

[0084] Specifically, in the fast demand mode, the control and regulation module controls the hydraulic pump to pressurize the hydraulic oil through the third operating power according to the system pressure demand, and controls the accumulator to release the stored energy.

[0085] Specifically, in the fast demand mode, the regulating control module controls the hydraulic pump to pressurize the hydraulic oil through the third operating power P3, and controls the accumulator to release the stored energy K through the control regulating module.

[0086] Specifically, by simultaneously starting the third operating power of the hydraulic pump and the energy release of the accumulator, the system can generate a large amount of pressure in a very short time to meet the instantaneous high pressure demand in the fast demand mode, significantly improving the response speed of the system. The third operating power is usually higher than the power in the normal mode. Combined with the energy released by the accumulator, the system can provide greater pressure output to meet the high pressure demand under special working conditions. By precisely controlling the coordination of the hydraulic pump and the accumulator, the system can maintain a high stability and reduce pressure fluctuations and shocks.

[0087] Specifically, the control and adjustment module also includes a fault handling unit, which is connected to the pressure fluctuation compensation unit. When the hydraulic pump pressurizes the hydraulic oil, the pressure detection module detects that the hydraulic oil pressure decreases, and an early warning is issued to shut down the hydraulic pump. The accumulator releases the stored energy to stop the amphibious vehicle.

[0088] Specifically, by real-time monitoring of changes in hydraulic oil pressure, the system can capture abnormal situations at the early stage of a fault and take timely response measures, effectively preventing the expansion of the fault and chain reactions.

[0089] Please continue to refer to Figure 5 ,like Figure 5 As shown, it is a structural diagram of a hydraulic oil tank applied in an embodiment of the present invention;

[0090] In a specific application, a hydraulic circulation control system of an embodiment of the present invention is applied to a hydraulic oil tank, which includes a joint 1, a swirl defoaming device 2, a first mounting plate 3, an air outlet 4, a second mounting plate 5 and a box body 6. The box body 2 is used to store hydraulic oil and is installed on an amphibious vehicle through the first mounting plate 3 and the second mounting plate 5. It is connected to the hydraulic pump and the accumulator through the joint 1 to ensure that there is sufficient hydraulic oil during the operation of the system. The internal swirl defoaming device is used to remove bubbles in the hydraulic oil and remove the bubbles from the air outlet 4 to improve the hydraulic circulation efficiency.

[0091] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydraulic circulation control system, characterized in that: include: A hydraulic pump, which is used to pressurize the hydraulic oil when the amphibious vehicle is running, so that the pressure value of the hydraulic oil reaches a target pressure value; an accumulator connected to the hydraulic pump, for storing the energy of the hydraulic oil when the hydraulic oil pressure value exceeds the target pressure value, and for releasing the stored energy when the system pressure is lower than the required pressure; A pressure detection module, connected to the hydraulic pump, for detecting the pressure value of the hydraulic oil in real time to obtain a real-time hydraulic oil pressure value; a pressure demand determination module, which is connected to the pressure detection module and is used to receive operation information to determine a pressure demand mode, including a normal pressure demand mode and a fast pressure demand mode; a control and regulation module, which is connected to the pressure detection module, the pressure demand determination module, the hydraulic pump and the accumulator, and is used to control and regulate the power of the hydraulic pump and the operation of the accumulator according to the pressure demand mode; An execution detection module is connected to the pressure demand determination module and the control and regulation module, and is used to periodically detect the real-time transmission power of the actuator, determine whether abnormal pressure loss occurs in the flow of hydraulic oil according to the change in the transmission power, and adjust the released energy of the accumulator when it is determined that abnormal pressure loss occurs.

2. The hydraulic circulation control system according to claim 1, characterized in that: The execution detection module calculates the real-time power change value based on the detected real-time operating power, compares the real-time power change value with the preset power change threshold, and determines whether the pressure demand mode has changed when the real-time power change value is greater than the preset power change threshold, and determines whether abnormal pressure loss occurs based on the determination result.

3. The hydraulic circulation control system according to claim 1, characterized in that: The control and regulation module includes an energy storage determination unit and a release determination unit. The energy storage determination unit is used to control the energy storage unit to store energy of the hydraulic oil when the real-time hydraulic oil pressure value detected by the pressure detection module is greater than or equal to the target pressure value; The release determination unit is used to control the release unit to release the stored energy when the real-time hydraulic oil pressure value detected by the pressure detection module is less than the target pressure value.

4. The hydraulic circulation control system according to claim 3, characterized in that: The control and regulation module also includes a pressure fluctuation compensation unit, which is connected to the release determination unit and is used to detect the pressure fluctuation value of the hydraulic oil in a preset time period. When the pressure fluctuation value is not within the preset pressure fluctuation range, the compensation size of the hydraulic oil by the accumulator is determined according to the positive and negative size of the pressure fluctuation value. The accumulator compensates the hydraulic oil pressure according to the compensation size, wherein: The pressure fluctuation value is the sum of the differences between the real-time hydraulic oil pressure detected by the pressure detection module each time within a preset time period and the target pressure.

5. The hydraulic circulation control system according to claim 4, characterized in that: When the pressure demand determination module determines that the normal demand mode is in progress, the control and regulation module controls the hydraulic pump to pressurize the hydraulic oil through the first operating power and charges the accumulator, and determines whether to adjust the operating power of the hydraulic pump according to the energy storage condition of the accumulator.

6. The hydraulic circulation control system according to claim 1, characterized in that: The accumulator comprises an energy storage unit and a release unit. The energy storage unit is used to store the energy of the hydraulic oil when the hydraulic oil pressure is greater than or equal to the target pressure value; The release unit is used to release the stored energy when the hydraulic oil pressure is less than the target pressure value.

7. The hydraulic circulation control system according to claim 6, characterized in that: The accumulator is provided with a first energy storage amount and a second energy storage amount, wherein the first energy storage amount is greater than the second energy storage amount. When the energy storage unit stores the energy of the hydraulic oil and reaches the first energy storage amount, the storage of the hydraulic oil energy is stopped. When the release unit releases the stored energy and reaches the second energy storage amount, the release of the stored energy is stopped.

8. The hydraulic circulation control system according to claim 5, characterized in that: The control and regulation module monitors the energy storage amount in the accumulator, and adjusts the operating power of the hydraulic pump when the energy storage amount in the accumulator is greater than or equal to the first energy storage amount. The hydraulic pump pressurizes the hydraulic oil through the second operating power and controls the accumulator to release energy.

9. The hydraulic circulation control system according to claim 8, characterized in that: In the fast demand mode, the control and regulation module controls the hydraulic pump to pressurize the hydraulic oil through the third operating power according to the system pressure demand, and controls the accumulator to release the stored energy.

10. The hydraulic circulation control system according to claim 9, characterized in that: The control and adjustment module also includes a fault handling unit, which is connected to the pressure fluctuation compensation unit. When the hydraulic pump pressurizes the hydraulic oil, the pressure detection module detects that the hydraulic oil pressure decreases, and issues an early warning and shuts down the hydraulic pump. The accumulator releases the stored energy to stop the amphibious vehicle.

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