Self-adaptive high-pressure large-flow intelligent hydraulic system

Abstract

The invention relates to the technical field of hydraulic systems, in particular to a self-adaptive high-pressure large-flow intelligent hydraulic system which comprises a parameter detection module, a time detection module, a safety detection module, a calculation analysis module, an intelligent adjusting module and a plurality of intelligent adjusting valves. The influence of external safety factors on the hydraulic system is determined by detecting the temperature of the hydraulic system and the water content and the oil content in hydraulic oil, the working parameters of the hydraulic system are adjusted according to the influence quantity, and the working stability of the hydraulic system is improved; the flow adjusting valve is adjusted according to the system conformity of the hydraulic system, so that the working requirement of the hydraulic system under the current load is met, the performance of the system is optimized, meanwhile, the hydraulic system is protected, and the service life of the hydraulic system is prolonged; external safety factors and temperature influences are comprehensively considered, the hydraulic oil flow and the number of valves are adjusted, and the purposes of improving system performance and safety and prolonging the service life are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic systems, and in particular to an adaptive high-pressure and large-flow intelligent hydraulic system. Background Art

[0002] The function of the hydraulic system is to increase the force by changing the pressure. A complete hydraulic system consists of five parts, namely power elements, actuators, control elements, auxiliary elements and hydraulic oil; large-flow hydraulic systems are usually designed to handle large volumes of liquid flow and are suitable for some industrial applications, such as large machinery, construction equipment, oil field extraction and other fields that require high-power hydraulic systems.

[0003] Chinese Patent Publication No.: CN109372810B discloses a large-flow press hydraulic system; including an oil tank device, a main pump device, a circulating filter cooling device, a pilot oil motor pump group, a main pump flow control circuit, a cylinder 2# control circuit, a cylinder 3# control circuit, a cylinder 1# control circuit and an oil return pressure relief device; it solves the technical problems of the existing large-flow press hydraulic system that is prone to vibration and large flow changes during start-stop and state conversion, and is prone to overflow. It can be seen that the large-flow press hydraulic system has the following problems: it is impossible to detect the actual load and corresponding switching time of the large-flow hydraulic system, resulting in a low response speed of the hydraulic system to load changes. Summary of the invention

[0004] To this end, the present invention provides an adaptive high-pressure and large-flow intelligent hydraulic system to overcome the problem in the prior art that the actual load and corresponding switching duration of the large-flow hydraulic system cannot be detected, resulting in a low response speed of the hydraulic system to load changes.

[0005] To achieve the above object, the present invention provides an adaptive high-pressure and high-flow intelligent hydraulic system, comprising:

[0006] A parameter detection module, which is used to detect the current load level, actual pressure, actual hydraulic oil flow rate of the hydraulic system, and stores the preset pressure and preset hydraulic oil flow rate of each load level;

[0007] An action detection module, which is connected to the parameter detection module, is used to detect the load level change time of the hydraulic system and the hydraulic system parameter completion change time, and calculate the actual parameter change time of the hydraulic system;

[0008] A safety detection module, which is connected to the parameter detection module and is used to detect the hydraulic oil temperature of the hydraulic system at the current load level and the water content and impurity content of the hydraulic oil in each hydraulic pipeline;

[0009] a calculation and analysis module, which is respectively connected to the parameter detection module, the action detection module and the safety detection module, and is used to calculate the system compliance according to the detection result of the parameter detection module and the preset pressure of the current load level and the preset hydraulic oil flow rate, and to determine the preset parameter switching time according to the detection result of the safety detection module and the preset pressure of the target load level and the preset hydraulic oil flow rate;

[0010] an intelligent adjustment module, which is respectively connected to the parameter detection module, the action detection module, the safety detection module and the calculation and analysis module, and is used to determine the adjustment mode of the current load level of the hydraulic system according to the system compliance, and determine the switching mode of the hydraulic system according to the load level change and the preset parameter switching time;

[0011] A plurality of intelligent regulating valves are respectively connected to the intelligent regulating modules and are used to adjust various actual parameters of the hydraulic system according to the regulating mode and the switching mode determined by the intelligent regulating module.

[0012] Furthermore, the safety detection module includes:

[0013] A plurality of temperature detection units are respectively arranged in the oil pipelines to measure the temperature of the hydraulic oil in the hydraulic system;

[0014] A plurality of hydraulic oil detection units, each of which is connected to a single temperature detection unit, for detecting the concentration and the number of particles of the hydraulic oil flowing through per unit time;

[0015] The oil volume change analysis unit is connected to the temperature detection unit and is used to calculate the volume change of the hydraulic oil according to the hydraulic oil temperature, the standard temperature and the type of hydraulic oil.

[0016] Wherein, the particles include liquid droplets and solid particles.

[0017] Furthermore, the volume change of the hydraulic oil is determined according to the following formula:

[0018] ΔV=α×(T1-T0)×V,

[0019] Wherein, ΔV is the volume change of the oil, α is the volume change coefficient, T1 is the hydraulic oil temperature, T0 is the standard temperature, and V is the volume of hydraulic oil flowing per unit time.

[0020] Furthermore, the intelligent regulating valve comprises:

[0021] An intelligent cooling valve, which is connected to the temperature adjustment unit and is disposed in the cooling pipe, and is used to adjust the switch and opening size of the intelligent cooling valve according to the way of cooling the hydraulic system determined by the temperature adjustment unit;

[0022] The intelligent flow valve is connected to the hydraulic adjustment unit and is arranged in each oil pipeline to adjust the switch and opening size of the intelligent flow valve according to the adjustment mode or switching mode of the hydraulic system determined by the hydraulic adjustment unit.

[0023] Furthermore, the intelligent adjustment module includes:

[0024] The hydraulic adjustment unit is connected to the calculation and analysis module and each of the intelligent regulating valves, respectively, to determine the adjustment mode of the intelligent flow valve according to the system compliance; determine the number of switches of the intelligent flow valve according to the current load level and the target load level; determine the switching speed according to the preset parameter switching time; the hydraulic adjustment unit adjusts the hydraulic pressure by controlling the intelligent regulating valve;

[0025] The temperature adjustment unit is connected to the calculation and analysis module and the intelligent cooling valve, and includes the cooling pipe, which is used to determine whether the cooling pipe is opened and the flow rate of the coolant in the cooling pipe according to the hydraulic oil temperature, so as to cool the hydraulic system.

[0026] Furthermore, the system compliance is determined according to the following formula:

[0027]

[0028] Among them, β is the system compliance, p1 is the actual pressure, p0 is the preset pressure corresponding to the current load level, v1 is the actual hydraulic oil flow rate, v0 is the preset flow rate corresponding to the current load level, and d is the diameter of the oil pipeline.

[0029] Furthermore, the adjustment method includes:

[0030] The hydraulic adjustment unit of the intelligent adjustment module determines whether the intelligent flow valve that has been opened at the current load level needs to be adjusted and determines the adjustment amount of the intelligent flow valve according to the system compliance.

[0031] If the system compliance is lower than the preset compliance, determining whether the actual pressure meets the preset pressure requirement corresponding to the current load level and whether the actual hydraulic oil flow rate meets the preset flow rate requirement for the current load level;

[0032] If the system compliance is greater than or equal to the preset compliance, it is determined that there is no need to adjust the intelligent flow valve.

[0033] Furthermore, the preset parameter switching duration is determined according to the following formula:

[0034]

[0035] Among them, t' is the preset parameter switching time, t0 is the standard parameter switching time, ΔV is the oil volume change, V is the hydraulic oil volume flowing per unit time, and γ is the impurity content of the hydraulic oil.

[0036] Furthermore, the switching method includes:

[0037] The intelligent adjustment module determines the opening quantity of the intelligent flow valve according to the current load level and the expected load level;

[0038] Furthermore, the intelligent adjustment module determines the opening or closing speed of the intelligent flow valve according to the opening quantity of the intelligent flow valve.

[0039] Furthermore, when the impurity content of the hydraulic oil is greater than the warning impurity content, the replacement amount of the hydraulic oil needs to be determined according to the difference between the impurity content of the hydraulic oil and the warning impurity content.

[0040] Compared with the prior art, the beneficial effect of the present invention lies in that, in the adaptive high-pressure and large-flow intelligent hydraulic system of the present invention, the influence of external safety factors on the hydraulic system is determined by detecting the temperature of the hydraulic system and the water content and oil content in the hydraulic oil, and the working parameters of the hydraulic system are adjusted according to the influence amount, thereby improving the working stability of the hydraulic system; the flow regulating valve is adjusted according to the system compliance of the hydraulic system to meet the working requirements of the hydraulic system under the current load, and the performance of the system is optimized while protecting the hydraulic system and extending its service life. The opening or closing speed of the flow valve is determined according to the number of flow valve openings that need to be changed according to the load level change, which can reduce the response time of parameter switching and reduce the working pressure of hydraulic system parts; the adaptive high-pressure and large-flow intelligent hydraulic system of the present invention achieves the purpose of improving system performance, safety and service life, and shortening response time by comprehensively considering external safety factors and temperature influences, and adjusting the hydraulic oil flow and valve switching speed.

[0041] Furthermore, in the adaptive high-pressure and large-flow intelligent hydraulic system of the present invention, the influence of external safety factors of the hydraulic system on the hydraulic system is determined by detecting the temperature of the hydraulic system and the water content and oil content in the hydraulic oil, thereby providing a data basis for subsequent adjustment of the hydraulic system according to external safety factors.

[0042] Furthermore, in the adaptive high-pressure and large-flow intelligent hydraulic system of the present invention, the influence of the hydraulic system operating temperature on the hydraulic oil is taken into consideration, which can avoid the influence of the large volume change of the hydraulic oil affected by the temperature due to the large flow rate on the operation of the hydraulic system, and also avoid damage to the hydraulic system due to excessive flow rate.

[0043] In the adaptive high-pressure and high-flow intelligent hydraulic system of the present invention, the flow regulating valve is adjusted according to the system compliance of the hydraulic system. While meeting the working requirements of the hydraulic system under the current load, the hydraulic system is also protected, thereby extending the service life of the hydraulic system.

[0044] In the adaptive high-pressure and large-flow intelligent hydraulic system of the present invention, the opening or closing speed of the intelligent flow valve is determined according to the number of openings of the intelligent flow valve, which can avoid reducing the service life of the hydraulic system due to excessive flow, and reduce the working pressure of other flow regulating valves by increasing the number, making other adjustment processes easier to achieve. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of the structure of an adaptive high-pressure and high-flow intelligent hydraulic system according to an embodiment of the present invention;

[0046] Figure 2 This is a schematic diagram of the structure of a safety detection module of an adaptive high-pressure and high-flow intelligent hydraulic system according to an embodiment of the present invention;

[0047] Figure 3 A result schematic diagram of an intelligent regulating valve and an intelligent regulating module of an adaptive high-pressure and high-flow intelligent hydraulic system according to an embodiment of the present invention;

[0048] Figure 4 This is a logic diagram for determining the adjustment mode of the adaptive high-pressure and high-flow intelligent hydraulic system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to make the objects 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.

[0050] 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.

[0051] 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.

[0052] In addition, it should be noted that 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 or an electrical 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 those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] See also Figure 1 As shown, it is a structural schematic diagram of an intelligent hydraulic system with adaptive high pressure and large flow according to an embodiment of the present invention; the present invention provides an intelligent hydraulic system with adaptive high pressure and large flow, comprising:

[0054] A parameter detection module, which is used to detect the current load level, actual pressure, actual hydraulic oil flow rate of the hydraulic system, and stores the preset pressure and preset hydraulic oil flow rate of each load level;

[0055] An action detection module, which is connected to the parameter detection module, is used to detect the load level change time of the hydraulic system and the hydraulic system parameter completion change time, and calculate the actual parameter change time of the hydraulic system;

[0056] A safety detection module, which is connected to the parameter detection module and is used to detect the hydraulic oil temperature of the hydraulic system at the current load level and the water content and impurity content of the hydraulic oil in each hydraulic pipeline;

[0057] a calculation and analysis module, which is respectively connected to the parameter detection module, the action detection module and the safety detection module, and is used to calculate the system compliance according to the detection result of the parameter detection module and the preset pressure of the current load level and the preset hydraulic oil flow rate, and to determine the preset parameter switching time according to the detection result of the safety detection module and the preset pressure of the target load level and the preset hydraulic oil flow rate;

[0058] an intelligent adjustment module, which is respectively connected to the parameter detection module, the action detection module, the safety detection module and the calculation and analysis module, and is used to determine the adjustment mode of the current load level of the hydraulic system according to the system compliance, and determine the switching mode of the hydraulic system according to the load level change and the preset parameter switching time;

[0059] A plurality of intelligent regulating valves are respectively connected to the intelligent regulating modules and are used to adjust various actual parameters of the hydraulic system according to the regulating mode and the switching mode determined by the intelligent regulating module.

[0060] In implementation, the actual parameter change duration is the time from when the load level of the hydraulic system is changed to when the parameter of the hydraulic system is changed.

[0061] In the adaptive high-pressure and large-flow intelligent hydraulic system of the present invention, the influence of external safety factors on the hydraulic system is determined by detecting the temperature of the hydraulic system and the water content and oil content in the hydraulic oil, and the working parameters of the hydraulic system are adjusted according to the influence amount, thereby improving the working stability of the hydraulic system; the flow regulating valve is adjusted according to the system compliance of the hydraulic system to meet the working requirements of the hydraulic system under the current load, and the performance of the system is optimized while protecting the hydraulic system and extending its service life. The opening or closing speed of the flow valve is determined according to the number of flow valve openings that need to be changed due to changes in load levels, which can reduce the response time of parameter switching and reduce the working pressure of hydraulic system parts; the adaptive high-pressure and large-flow intelligent hydraulic system of the present invention achieves the purpose of improving system performance, safety and service life by comprehensively considering external safety factors and temperature influences and adjusting the hydraulic oil flow and valve switching speed.

[0062] See also Figure 2 As shown, it is a structural schematic diagram of a safety detection module of an adaptive high-pressure and high-flow intelligent hydraulic system according to an embodiment of the present invention; the safety detection module includes:

[0063] A plurality of temperature detection units are respectively arranged in the oil pipelines to measure the temperature of the hydraulic oil in the hydraulic system;

[0064] A plurality of hydraulic oil detection units, each of which is connected to a single temperature detection unit, for detecting the concentration and the number of particles of the hydraulic oil flowing through per unit time;

[0065] The oil volume change analysis unit is connected to the temperature detection unit and is used to calculate the volume change of the hydraulic oil according to the hydraulic oil temperature, the standard temperature and the type of hydraulic oil.

[0066] Wherein, the particles include liquid droplets and solid particles.

[0067] In practice, the hydraulic oil temperature can be obtained by any existing technology such as a temperature sensor, and is not specifically limited here; the standard temperature is determined according to the working temperature of the rated working condition set by the hydraulic system;

[0068] A particle counter is provided in the hydraulic oil detection unit. The particle counter can be used to measure the number and size of solid particles in the hydraulic oil. Through the flow of liquid, the particle counter uses an optical sensor to detect and count the particles;

[0069] The water in hydraulic oil includes emulsified water and dissolved water. Emulsified water is a small emulsion droplet formed by the mixture of water and hydraulic oil. In this case, water is dispersed in the oil to form an uneven mixture. Emulsified water is usually formed under mechanical movement or system stirring, which may cause foaming of the oil, increased viscosity and decreased lubrication performance; dissolved water is water molecules dissolved in the hydraulic oil in molecular form. Under normal circumstances, the oil can accommodate a certain amount of dissolved water, but if it exceeds its solubility, free water or emulsified water will be formed. High temperature, high pressure or system pressure changes may cause the dissolved water to be released; the purpose of detecting the concentration of hydraulic oil is to detect how much dissolved water is in the hydraulic oil;

[0070] Excessive water can cause the performance of the hydraulic system to deteriorate, so it is important to regularly detect and maintain the water content in the oil. Measures such as using oil-water separators, desiccants or regular oil changes can effectively manage water in the hydraulic system.

[0071] In the adaptive high-pressure and large-flow intelligent hydraulic system of the present invention, the influence of external safety factors of the hydraulic system on the hydraulic system is determined by detecting the temperature of the hydraulic system and the water content and oil content in the hydraulic oil, thereby providing a data basis for subsequent adjustment of the hydraulic system according to external safety factors.

[0072] Specifically, the volume change of the hydraulic oil is determined according to the following formula:

[0073] ΔV=α×(T1-T0)×V,

[0074] Wherein, ΔV is the volume change of the oil, α is the volume change coefficient, T1 is the hydraulic oil temperature, T0 is the standard temperature, and V is the volume of hydraulic oil flowing per unit time.

[0075] In implementation, the volume change coefficient is determined according to the type of hydraulic oil, and its value is equal to the thermal expansion and contraction coefficient of the hydraulic oil;

[0076] It is understandable that hydraulic oil will expand and contract when heated and cooled. The temperature change of the hydraulic oil causes its volume to change. When the hydraulic oil is heated, its molecules will expand, causing the volume of the oil to increase. Conversely, when the hydraulic oil is cooled, the molecules will contract and the volume of the oil will decrease. This volume change will have an impact on the hydraulic system; for example, in a hydraulic system, a rise in temperature causes the volume of the oil in the system to increase, thereby increasing the pressure of the system. Conversely, a drop in temperature may cause the volume of the hydraulic oil to decrease, reducing the pressure of the system.

[0077] See also Figure 3 As shown, it is a result schematic diagram of an intelligent regulating valve and an intelligent regulating module of an adaptive high-pressure and large-flow intelligent hydraulic system according to an embodiment of the present invention; the intelligent regulating valve includes:

[0078] An intelligent cooling valve, which is connected to the temperature adjustment unit and is disposed in the cooling pipe, and is used to adjust the switch and opening size of the intelligent cooling valve according to the way of cooling the hydraulic system determined by the temperature adjustment unit;

[0079] The intelligent flow valve is connected to the hydraulic adjustment unit and is arranged in each oil pipeline to adjust the switch and opening size of the intelligent flow valve according to the adjustment mode or switching mode of the hydraulic system determined by the hydraulic adjustment unit.

[0080] In practice, the closing of the intelligent cooling valve means that no coolant flows in the cooling pipe, and the hydraulic system is not cooled. The intelligent cooling valve adjusts the flow rate of the coolant by adjusting the size of the opening;

[0081] The closing of the intelligent flow valve means that the oil pipeline corresponding to the current flow valve is not open. The intelligent flow valve adjusts the flow rate of the hydraulic oil by adjusting the size of the opening.

[0082] Specifically, the intelligent adjustment module includes:

[0083] A hydraulic adjustment unit, which is respectively connected to the calculation and analysis module and each of the intelligent regulating valves, and is used to determine the adjustment mode of the intelligent flow valve according to the system compliance; determine the number of switches and the switching speed of the intelligent flow valve according to the preset parameter switching time; the hydraulic adjustment unit adjusts the hydraulic pressure by controlling the intelligent regulating valve;

[0084] The temperature adjustment unit is connected to the calculation and analysis module and the intelligent cooling valve, and includes a cooling pipe, which is used to determine whether the cooling pipe is opened and the flow rate of the coolant in the cooling pipe according to the temperature of the hydraulic oil, so as to cool down the hydraulic system.

[0085] In implementation, a load level is set in the hydraulic system, which includes a preset pressure of the hydraulic system and a preset hydraulic oil flow rate. The load level indicates the force that the hydraulic system needs to provide. The pressure difference required by different load levels can only be met by switching the intelligent flow valve, and cannot be met by adjusting the opening size of the intelligent flow valve.

[0086] The temperature adjustment unit cools the hydraulic system by cooling the oil pipeline. When the hydraulic oil temperature exceeds the safety temperature, the coolant flow rate in the cooling pipe is determined according to the difference between the current hydraulic oil temperature and the safety temperature. The safety temperature is determined according to the maximum allowable temperature of the hydraulic system itself during normal operation. It can be understood that the faster the coolant flow rate, the better the cooling effect.

[0087] In the adaptive high-pressure and high-flow intelligent hydraulic system of the present invention, the influence of the hydraulic system working temperature on the hydraulic oil is taken into consideration, so as to avoid the influence of the large volume change of the hydraulic oil affected by the temperature due to the large flow rate on the operation of the hydraulic system, and also avoid the damage to the hydraulic system due to excessive flow rate.

[0088] Specifically, the system compliance is determined according to the following formula:

[0089]

[0090] Among them, β is the system compliance, p1 is the actual pressure, p0 is the preset pressure corresponding to the current load level, v1 is the actual hydraulic oil flow rate, v0 is the preset flow rate corresponding to the current load level, and d is the diameter of the oil pipeline.

[0091] It is understandable that even if the hydraulic oil flow rate meets the requirement, oil leakage may occur due to damage to the hydraulic system parts, making the hydraulic system pressure unable to reach the required pressure, thus affecting the operation of the hydraulic system; similarly, even if the hydraulic pressure meets the requirement, the hydraulic oil flow rate increases because the oil pipeline is blocked by oil impurities, causing the pressure to meet the requirement. As the working time increases, the hydraulic system will be damaged.

[0092] See also Figure 4 As shown, it is a logic diagram for determining the adjustment mode of the adaptive high-pressure and high-flow intelligent hydraulic system according to an embodiment of the present invention, and the adjustment mode includes:

[0093] The hydraulic adjustment unit of the intelligent adjustment module determines whether the intelligent flow valve that has been opened at the current load level needs to be adjusted and determines the adjustment amount of the intelligent flow valve according to the system compliance.

[0094] If the system compliance is lower than the preset compliance, determining whether the actual pressure meets the preset pressure requirement corresponding to the current load level and whether the actual hydraulic oil flow rate meets the preset flow rate requirement for the current load level;

[0095] If the system compliance is greater than or equal to the preset compliance, it is determined that there is no need to adjust the intelligent flow valve.

[0096] In implementation, if the actual pressure is lower than the preset pressure corresponding to the current load level, and the actual hydraulic oil flow rate meets the preset flow rate requirement of the current load level, the opening of the intelligent flow valve of the oil pipeline where the hydraulic oil flow rate is lower than the average hydraulic oil flow rate is increased accordingly, and the number of opened intelligent flow valves is increased while ensuring that the flow rate per unit time remains unchanged;

[0097] If the actual pressure meets the preset pressure requirement corresponding to the current load level, and the actual hydraulic oil flow rate is lower than the preset flow rate of the current load level, the opening of the smart flow valve with a high actual hydraulic oil flow rate will be increased, and the opening of the smart flow valve with a low actual hydraulic oil flow rate will be reduced.

[0098] In the adaptive high-pressure and high-flow intelligent hydraulic system of the present invention, the flow regulating valve is adjusted according to the system compliance of the hydraulic system. While meeting the working requirements of the hydraulic system under the current load, the hydraulic system is also protected, thereby extending the service life of the hydraulic system.

[0099] Specifically, the preset parameter switching duration is determined according to the following formula:

[0100]

[0101] Among them, t' is the preset parameter switching time, t0 is the standard parameter switching time, ΔV is the oil volume change, V is the hydraulic oil volume flowing per unit time, and γ is the impurity content of the hydraulic oil.

[0102] In practice, the impurity content of the hydraulic oil is determined by comparing the number of particles detected by the hydraulic oil detection unit with the maximum number of particles when the pollution level is 16 in the ISO 4406 standard.

[0103] If the actual parameter change time is greater than 1.1 times the preset parameter switching time or less than 0.9 times the preset parameter switching time, it is determined that the system is faulty and the hydraulic system needs to be troubleshooted and repaired.

[0104] Specifically, the switching mode includes the intelligent adjustment module determining the opening quantity of the intelligent flow valve according to the current load level and the expected load level;

[0105] Furthermore, the intelligent adjustment module determines the opening or closing speed of the intelligent flow valve according to the opening quantity of the intelligent flow valve.

[0106] In implementation, the greater the load of the hydraulic system corresponding to the load level, the greater the force that the hydraulic system needs to provide, and the more the number of openings of the intelligent flow valve is, and when the load level changes, the opening and closing of the intelligent flow valve is greater than 1; the opening or closing speed of the intelligent flow valve is determined according to the preset parameter switching time;

[0107] Also, when the number of flow valves opened increases, the opening sizes of other opened intelligent flow valves are also increased at the same time. For example, the number of opened intelligent flow valves is determined to be 5 based on the current load level and the expected load level, and the actual number of opened valves is 5+1=6. According to the newly added intelligent flow valves, the flow passing through other flow valves is evenly distributed to the newly added intelligent flow valves to reduce the impact on the hydraulic system.

[0108] In the adaptive high-pressure and large-flow intelligent hydraulic system of the present invention, the opening or closing speed of the intelligent flow valve is determined according to the number of openings of the intelligent flow valve, which can avoid reducing the service life of the hydraulic system due to excessive flow, and reduce the working pressure of other flow regulating valves by increasing the number, making other adjustment processes easier to achieve.

[0109] Specifically, when the impurity content of the hydraulic oil is greater than the warning impurity content, the replacement amount of the hydraulic oil needs to be determined according to the difference between the impurity content of the hydraulic oil and the warning impurity content.

[0110] In implementation, the number of particles at the warning impurity content is determined according to the minimum number of particles when the pollution level is 22 in the ISO 4406 standard, and the oil replacement amount ΔV2 = (γ-γ0) / γ0×V0, wherein γ0 is the warning impurity content and V0 is the total volume of the hydraulic oil.

[0111] 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.

[0112] 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. An adaptive high-pressure and high-flow intelligent hydraulic system, characterized in that: include: A parameter detection module, which is used to detect the current load level, actual pressure, actual hydraulic oil flow rate of the hydraulic system, and stores the preset pressure and preset hydraulic oil flow rate of each load level; An action detection module, which is connected to the parameter detection module, is used to detect the load level change time of the hydraulic system and the hydraulic system parameter completion change time, and calculate the actual parameter change time of the hydraulic system; A safety detection module, which is connected to the parameter detection module and is used to detect the hydraulic oil temperature of the hydraulic system at the current load level and the water content and impurity content of the hydraulic oil in each hydraulic pipeline; a calculation and analysis module, which is respectively connected to the parameter detection module, the action detection module and the safety detection module, and is used to calculate the system compliance according to the detection result of the parameter detection module and the preset pressure of the current load level and the preset hydraulic oil flow rate, and to determine the preset parameter switching time according to the detection result of the safety detection module and the preset pressure of the target load level and the preset hydraulic oil flow rate; an intelligent adjustment module, which is respectively connected to the parameter detection module, the action detection module, the safety detection module and the calculation and analysis module, and is used to determine the adjustment mode of the current load level of the hydraulic system according to the system compliance, and determine the switching mode of the hydraulic system according to the load level change and the preset parameter switching time; A plurality of intelligent regulating valves are respectively connected to the intelligent regulating modules and are used to adjust various actual parameters of the hydraulic system according to the regulating mode and the switching mode determined by the intelligent regulating module.

2. The adaptive high-pressure and high-flow intelligent hydraulic system according to claim 1 is characterized in that: The safety detection module comprises: A plurality of temperature detection units are respectively arranged in the oil pipelines to measure the temperature of the hydraulic oil in the hydraulic system; A plurality of hydraulic oil detection units, each of which is connected to a single temperature detection unit, for detecting the concentration and the number of particles of the hydraulic oil flowing through per unit time; The oil volume change analysis unit is connected to the temperature detection unit and is used to calculate the volume change of the hydraulic oil according to the hydraulic oil temperature, the standard temperature and the type of hydraulic oil. Wherein, the particles include liquid droplets and solid particles.

3. The adaptive high-pressure and high-flow intelligent hydraulic system according to claim 2 is characterized in that: The volume change of the hydraulic oil is determined according to the following formula: ΔV=α×(T1-T0)×V, Wherein, ΔV is the volume change of the oil, α is the volume change coefficient, T1 is the hydraulic oil temperature, T0 is the standard temperature, and V is the volume of hydraulic oil flowing per unit time.

4. The adaptive high-pressure and high-flow intelligent hydraulic system according to claim 3 is characterized in that: The intelligent regulating valve comprises: An intelligent cooling valve, which is connected to the temperature adjustment unit and is disposed in the cooling pipe, and is used to adjust the switch and opening size of the intelligent cooling valve according to the way of cooling the hydraulic system determined by the temperature adjustment unit; The intelligent flow valve is connected to the hydraulic adjustment unit and is arranged in each oil pipeline to adjust the switch and opening size of the intelligent flow valve according to the adjustment mode or switching mode of the hydraulic system determined by the hydraulic adjustment unit.

5. The adaptive high-pressure and high-flow intelligent hydraulic system according to claim 4, characterized in that: The intelligent adjustment module comprises: The hydraulic adjustment unit is connected to the calculation and analysis module and each of the intelligent regulating valves, respectively, to determine the adjustment mode of the intelligent flow valve according to the system compliance; determine the number of switches of the intelligent flow valve according to the current load level and the target load level; determine the switching speed according to the preset parameter switching time; the hydraulic adjustment unit adjusts the hydraulic pressure by controlling the intelligent regulating valve; The temperature adjustment unit is connected to the calculation and analysis module and the intelligent cooling valve, and includes the cooling pipe, which is used to determine whether the cooling pipe is opened and the flow rate of the coolant in the cooling pipe according to the hydraulic oil temperature, so as to cool the hydraulic system.

6. The adaptive high-pressure and high-flow intelligent hydraulic system according to claim 5, characterized in that: The system compliance is determined according to the following formula: Among them, β is the system compliance, p1 is the actual pressure, p0 is the preset pressure corresponding to the current load level, v1 is the actual hydraulic oil flow rate, v0 is the preset flow rate corresponding to the current load level, and d is the diameter of the oil pipeline.

7. The adaptive high-pressure and high-flow intelligent hydraulic system according to claim 5, characterized in that: The adjustment methods include: The hydraulic adjustment unit of the intelligent adjustment module determines whether the intelligent flow valve that has been opened at the current load level needs to be adjusted and determines the adjustment amount of the intelligent flow valve according to the system compliance. If the system compliance is lower than the preset compliance, determining whether the actual pressure meets the preset pressure requirement corresponding to the current load level and whether the actual hydraulic oil flow rate meets the preset flow rate requirement for the current load level; If the system compliance is greater than or equal to the preset compliance, it is determined that there is no need to adjust the intelligent flow valve.

8. The adaptive high-pressure and high-flow intelligent hydraulic system according to claim 6, characterized in that: The preset parameter switching duration is determined according to the following formula: Wherein, t' is the preset parameter switching time, t0 is the standard parameter switching time, ΔV is the oil volume change, V is the hydraulic oil volume flowing per unit time, and γ is the impurity content of the hydraulic oil.

9. The adaptive high-pressure and high-flow intelligent hydraulic system according to claim 7, characterized in that: The switching method includes: The intelligent adjustment module determines the opening quantity of the intelligent flow valve according to the current load level and the expected load level; Furthermore, the intelligent adjustment module determines the opening or closing speed of the intelligent flow valve according to the opening quantity of the intelligent flow valve.

10. The adaptive high-pressure and high-flow intelligent hydraulic system according to claim 8, characterized in that: When the impurity content of the hydraulic oil is greater than the warning impurity content, the replacement amount of the hydraulic oil needs to be determined according to the difference between the impurity content of the hydraulic oil and the warning impurity content.

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