A multi-functional and highly efficient hydraulic station

Abstract

The present invention discloses a multifunctional and efficient hydraulic station, belonging to the technical field of hydraulic equipment, which includes a hydraulic pump assembly A and a hydraulic pump assembly B installed on the hydraulic station body, and further includes: an oil fluid state analysis module, which is used to obtain the oil fluid state and vibration data of the hydraulic pump assembly A and the hydraulic pump assembly B, and generate an oil fluid influence coefficient; a power balance distribution module, which is used to distribute the flow rates of the hydraulic pump assembly A and the hydraulic pump assembly B according to the oil fluid influence coefficient and generate a power balance distribution coefficient; a rotational speed adjustment module, which adjusts the rotational speeds of the hydraulic pump assembly A and the hydraulic pump assembly B according to the power balance distribution coefficient; through multi-parameter normalization analysis and vibration correction, the present invention can evaluate the health state of the oil fluid in real time, and at the same time, based on the oil fluid influence coefficient and the logistic function model, adaptively adjust the flow rates of the double pumps, and combine the flow rate deviation and pressure difference to quantify the power balance coefficient and hierarchically adjust the rotational speed strategy, significantly improving the system stability.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydraulic equipment, and particularly relates to a multi-functional and efficient hydraulic station. Background Art

[0002] As the core power unit in the industrial field, the performance of a hydraulic station directly affects the operation efficiency and reliability of equipment. Traditional hydraulic stations mostly adopt a single pump group structure. The single pump group is difficult to dynamically match the load demand under variable working conditions, resulting in energy waste. There is a lack of real-time monitoring and feedback on the oil fluid state (temperature, cleanliness, viscosity, etc.), and it is easy to cause failures due to oil fluid deterioration. When multiple pumps work together, the flow rate and pressure distribution rely on mechanical adjustment, with slow response and low accuracy.

[0003] Therefore, there is an urgent need for a multi-functional and efficient hydraulic station that integrates oil fluid state analysis, dynamic flow distribution, and adaptive speed regulation to improve system energy efficiency, extend equipment life, and enhance stability. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a multi-functional and efficient hydraulic station, which solves the above problems.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A multi-functional and efficient hydraulic station includes at least two sets of hydraulic pump assemblies, namely hydraulic pump assembly A and hydraulic pump assembly B, installed on the hydraulic station body, and further includes:

[0006] An oil fluid state analysis module, which is used to obtain the oil fluid state data and vibration data of hydraulic pump assembly A and hydraulic pump assembly B, and generate an oil fluid influence coefficient;

[0007] A power balance distribution module, which is used to distribute the flow rates of hydraulic pump assembly A and hydraulic pump assembly B according to the oil fluid influence coefficient and generate a power balance distribution coefficient;

[0008] A speed adjustment module, which is used to adjust the speeds of hydraulic pump assembly A and hydraulic pump assembly B according to the power balance distribution coefficient;

[0009] The specific steps for the oil fluid state analysis module to generate the oil fluid influence coefficient are as follows:

[0010] S101. Obtain the oil fluid state data of hydraulic pump assembly A and hydraulic pump assembly B and the vibration data of their respective pump bodies. The oil fluid state data includes oil fluid temperature, oil fluid cleanliness, oil fluid viscosity, the temperature difference value between the oil fluid and the external environment, and the oil fluid temperature fluctuation value;

[0011] S102. Perform parameter normalization on the oil fluid state data and vibration data, and then obtain the oil fluid temperature index, temperature difference index, oil fluid temperature fluctuation index, cleanliness index, oil fluid viscosity index, and vibration index of the two hydraulic pump assemblies;

[0012] S103. Generate the oil fluid state analysis coefficients of hydraulic pump assembly A and hydraulic pump assembly B according to the two sets of index information in S102 and .

[0013] Based on the above technical solutions, the present invention also provides the following alternative technical solutions:

[0014] Further technical solution: The specific method for generating the oil fluid state analysis coefficients of hydraulic pump assembly A and hydraulic pump assembly B and is: Import the two sets of index information obtained in S102 into the pre-constructed oil fluid state analysis model to generate and , and the oil fluid state analysis model is expressed as:

[0015]

[0016] Wherein, represents the oil fluid state analysis coefficient, represents the oil fluid temperature index, represents the temperature difference index, represents the oil fluid temperature fluctuation index, represents the oil fluid viscosity index, represents the cleanliness index, represents the vibration index, represents the vibration correction coefficient, represents the weight and 1.

[0017] Further technical solution: The specific steps for the power balance distribution module to distribute the flow rates of hydraulic pump assembly A and hydraulic pump assembly B according to the oil fluid influence coefficient and generate the power balance distribution coefficient are as follows:

[0018] S201. Perform ratio processing on the obtained oil fluid state analysis coefficients of hydraulic pump assembly A and hydraulic pump assembly B and . If , then select as the influence parameter and substitute it into the flow rate correction model. If , then select as the influence parameter and substitute it into the flow rate correction model to obtain the target flow rate of hydraulic pump assembly A and the target flow rate of hydraulic pump assembly B , the flow correction model is expressed as:

[0019]

[0020] Wherein, represents the target flow rate of the hydraulic pump assembly A, represents the target flow rate of the hydraulic pump assembly B, represents the total flow rate required by the actuator, represents the oil influence coefficient, represents the flow distribution sensitivity coefficient;

[0021] S202. Substitute the obtained target flow rate and the target flow rate into the pre-constructed power balance distribution model to output the power balance distribution coefficient. The power balance distribution model is expressed as:

[0022]

[0023] Wherein, the power balance distribution coefficient, represents the current outlet flow rate of the hydraulic pump assembly A, represents the target flow rate of the hydraulic pump assembly A, represents the current outlet flow rate of the hydraulic pump assembly B, represents the target flow rate of the hydraulic pump assembly B, represents the current outlet pressure of the hydraulic pump assembly A, represents the current outlet pressure of the hydraulic pump assembly B, represents the total flow rate required by the actuator, represents the pressure weight, represents the maximum allowable pressure.

[0024] Further technical solution: If or , ignore the flow deviation term or , and only calculate 's influence on to avoid mis-triggering adjustments.

[0025] Further technical solution: The specific steps for the speed adjustment module to adjust the speeds of the hydraulic pump assembly A and the hydraulic pump assembly B according to the power balance distribution coefficient are as follows:

[0026] Compare the obtained with the corresponding balance threshold, and adjust the speeds of the hydraulic pump assembly A and the hydraulic pump assembly B accordingly according to the comparison result. Specifically:

[0027] If , maintain the current rotational speed and adjust the pressure difference between hydraulic pump assembly A and hydraulic pump assembly B through the pressure compensation valve;

[0028] If , proportionally allocate the rotational speed difference between hydraulic pump assembly A and hydraulic pump assembly B , determine the target rotational speed of hydraulic pump assembly A based on the rotational speed difference and the target rotational speed of hydraulic pump assembly B ;

[0029] The rotational speed difference is expressed as:

[0030]

[0031] represents the rotational speed difference between hydraulic pump assembly A and hydraulic pump assembly B, represents the dynamic equilibrium distribution coefficient, represents the total rotational speed demand, represents the current rotational speed of hydraulic pump assembly A, represents the current rotational speed of hydraulic pump assembly B;

[0032] The target rotational speed of hydraulic pump assembly A is expressed as:

[0033]

[0034] represents the target rotational speed of hydraulic pump assembly A, represents the current rotational speed of hydraulic pump assembly A, represents the rotational speed difference between hydraulic pump assembly A and hydraulic pump assembly B, represents the target flow rate of hydraulic pump assembly A, represents the required flow rate of the actuator;

[0035] The target rotational speed of hydraulic pump assembly B is expressed as:

[0036]

[0037] represents the target rotational speed of hydraulic pump assembly B, represents the total rotational speed demand, represents the target rotational speed of hydraulic pump assembly A;

[0038] If , independently adjust and , adopt the adjustment strategy of reducing the high rotational speed and increasing the low rotational speed, promote the rotational speeds of hydraulic pump assembly A and hydraulic pump assembly B to be gradually balanced, with each rotational speed adjustment amount being 40 rpm, and use fuzzy PID control to quickly adjust the rotational speeds of the two pumps.

[0039] Further technical solution: It further includes a multi-layer partition assembly and a high-efficiency filter installed inside the hydraulic station body. The multi-layer partition assembly includes partition A, partition B, and partition C that are linearly arranged in the fuel tank and divide the fuel tank into four areas A, B, C, and D. Four oil passing channels are opened at two-thirds of the height of partition A. Partition B is a porous partition, and arrayed small holes are opened in the area above half of the height of partition B. A V-shaped partition that makes the bottom of area B funnel-shaped is installed at the bottom of area B, and a slag discharge pipe equipped with a valve is connected to its lowest point. Partition C is a screen partition.

[0040] Further technical solution: The hydraulic pump assembly A and the hydraulic pump assembly B have the same structure. The hydraulic pump assembly A includes fuel tank A, motor A, and hydraulic pump A. Both fuel tanks are equipped with independent oil inlets, oil outlets, oil drain ports, and liquid level monitoring devices, and the oil in the two can be mutually supplemented or isolated through a connecting pipe with a control valve.

[0041] Further technical solution: An oil temperature sensor and a cooler are installed inside each fuel tank. The oil temperature sensor monitors the oil temperature in real time. When the oil temperature exceeds the set upper limit value, the cooler automatically starts for heat dissipation. The cooler adopts a high-efficiency finned structure, combined with forced air cooling or water cooling methods to quickly reduce the oil temperature. At the same time, the connecting pipe between the two fuel tanks can realize the exchange of hot oil and cold oil. The return oil of the multi-functional high-efficiency hydraulic station is installed with a return oil filter element.

[0042] Further technical solution: The multi-functional high-efficiency hydraulic station further includes two groups of operation control valves and corresponding connecting pipelines and control circuits.

[0043] The present invention provides a multi-functional high-efficiency hydraulic station, which has the following beneficial effects compared with the prior art:

[0044] 1. Through multi-parameter normalization analysis (temperature, cleanliness, viscosity, etc.) and vibration correction, the present invention can evaluate the health status of the oil in real time, prevent equipment failures caused by oil deterioration, and at the same time, based on the oil influence coefficient and the logistic function model, adaptively adjust the flow rates of the two pumps. 2. Ensure that each pump is in the best working condition under the total required flow rate, and at the same time, combine the flow deviation and pressure difference to quantify the power balance coefficient , and adjust the rotational speed in stages to significantly improve the system stability;

[0045] The design and implementation of the double fuel tank, double motor, double pump, and double operation hydraulic station can effectively improve the adaptability, reliability, and working efficiency of the hydraulic system in complex industrial environments;

[0046] 3. In the fuel tank of the present invention, a multi-layer partition assembly and an efficient filter are provided. The partitions of the multi-layer partition assembly divide the interior of the fuel tank into different regions, guiding the flow direction of the oil fluid, so that impurities have more opportunities to precipitate in a specific region at the bottom of the fuel tank. The multi-layer partition assembly includes partition A, partition B, and partition C arranged linearly in the fuel tank. Partition A, partition B, and partition C divide the fuel tank into four regions A, B, C, and D. The inlet is region A. The partition A from region A to region B is a solid partition. Four oil passageways are opened at two-thirds of the height of partition A to allow the oil to flow into region B. The oil fluid is buffered in region A. Region B is a precipitation area. The partition B from region B to region C is a porous partition. Arrayed small holes are opened in the region above half of the height of partition B. The oil fluid further slows down in region B to precipitate impurities. A V-shaped partition is installed at the bottom of region B to make the bottom of region B funnel-shaped, and a slag discharge pipe is connected to the lowest point. A valve is installed on the slag discharge pipe to facilitate the discharge of impurities. Region C is a fine precipitation area. The partition C between region C and region D is a screen partition, which can filter some un-precipitated iron filings and other impurities. A magnetic adsorption device is provided at the bottom of region C to adsorb iron filings impurities. Region D is an oil suction area. The filter adopts a replaceable filter element design, which can effectively filter tiny particle impurities in the oil fluid, ensure the cleanliness of the hydraulic oil, and extend the service life of hydraulic components. Description of the Drawings

[0047] Figure 1 This is a flow chart of the present invention.

[0048] Figure 2 This is a three-dimensional structure schematic diagram of the present invention.

[0049] Figure 3 This is a structure schematic diagram of the multi-layer partition assembly of the present invention.

[0050] Annotation of reference numerals in the drawings: 1. Hydraulic station body; 2. Hydraulic pump assembly A; 3. Hydraulic pump assembly B; 4. Multi-layer partition assembly; 401. Partition A; 402. Partition B; 403. Partition C; 404. V-shaped partition. Detailed Embodiment

[0051] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and 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.

[0052] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0053] Please refer to Figure 2 and Figure 3, provided by an embodiment of the present invention, is a multifunctional and efficient hydraulic station, which at least includes two sets of hydraulic pump assemblies, namely hydraulic pump assembly A2 and hydraulic pump assembly B3, installed on the hydraulic station body 1, and further includes:

[0054] A multi-layer partition assembly 4 and a high-efficiency filter installed inside the hydraulic station body 1. The multi-layer partition assembly 4 includes partition A401, partition B402, and partition C403 that are linearly arranged in the fuel tank and divide the fuel tank into four areas, namely A, B, C, and D. Four oil passage holes are opened at two-thirds of the height of partition A401. Partition B402 is a porous partition, and arrayed small holes are opened in the area above half of the height of partition B402. A V-shaped partition 404 that makes the bottom of area B funnel-shaped is installed at the bottom of area B, and a slag discharge pipe equipped with a valve is connected to its lowest point. Partition C403 is a screen partition.

[0055] In the embodiment of the present invention, a multi-layer partition assembly 4 and a high-efficiency filter are arranged inside the fuel tank. The partitions of the multi-layer partition assembly 4 divide the interior of the fuel tank into different areas, guiding the flow direction of the oil fluid, so that impurities have more opportunities to precipitate in specific areas at the bottom of the fuel tank. The multi-layer partition assembly 4 includes partition A401, partition B402, and partition C403 that are linearly arranged in the fuel tank. Partition A401, partition B402, and partition C403 (these partitions adopt multi-stage and multi-layer partitions) divide the fuel tank into four areas, namely A, B, C, and D. The oil inlet is area A. The partition A401 from area A to area B is a solid partition, and four oil passage holes are opened at two-thirds of the height of partition A401 to allow the oil to flow into area B. The oil fluid is buffered in area A. Area B is a precipitation area. The partition B402 from area B to area C is a porous partition, and arrayed small holes are opened in the area above half of the height of partition B402. The oil fluid further slows down in area B to precipitate impurities. A V-shaped partition 404 is installed at the bottom of area B to make the bottom of area B funnel-shaped, and a slag discharge pipe is connected to its lowest point. A valve is installed on the slag discharge pipe to facilitate the discharge of impurities. Area C is a fine precipitation area. The partition C403 between area C and area D is a screen partition, which can filter some un-precipitated iron filings and other impurities. A magnetic adsorption device is provided at the bottom of area C to adsorb iron filing impurities. Area D is an oil suction area. The filter adopts a replaceable filter element design, which can effectively filter tiny particle impurities in the oil fluid, ensure the cleanliness of the hydraulic oil, and extend the service life of hydraulic components.

[0056] Preferably, a return oil filter element is installed on the return oil of the multifunctional and efficient hydraulic station.

[0057] As an embodiment of the present invention, the multifunctional and efficient hydraulic station further includes two groups of operation control valves, corresponding connecting pipelines and control circuits. The hydraulic pump assemblies A2 and B3 have the same structure. The hydraulic pump assembly A2 includes a tank A, a motor A and a hydraulic pump A. Both of the two tanks are equipped with independent oil inlets, oil outlets, oil drain ports and liquid level monitoring devices, and oil can be mutually supplemented or isolated between them through a connecting pipeline with a control valve.

[0058] Preferably, an oil temperature sensor and a cooler are installed inside each tank. The oil temperature sensor monitors the oil temperature in real time. When the oil temperature exceeds the set upper limit value, the cooler automatically starts to dissipate heat. The cooler adopts an efficient finned structure and combines forced air cooling or water cooling methods to quickly reduce the oil temperature. At the same time, the connecting pipeline between the two tanks can realize the exchange of hot oil and cold oil when necessary.

[0059] Preferably, the multifunctional and efficient hydraulic station can monitor the liquid level of the tank in real time through the liquid level monitoring device. When the liquid level is lower than the set lower limit value, the oil replenishment system is automatically started. The oil replenishment system can replenish filtered and pre-treated hydraulic oil from an external oil source into the tank. In addition, the oil in the tank is sampled and detected regularly, and whether all or part of the oil needs to be replaced is determined according to the oil quality condition. When replacing the oil, the connecting pipeline between the tanks can be used to transfer the oil in one tank to the other tank, which is convenient for operation.

[0060] Preferably, the two groups of operation control valves are respectively connected to different hydraulic circuits or actuators, and independent operation control can be realized. For example, one group of operation control valves can be used to control the main actuator in the hydraulic system, such as the telescopic movement of a large hydraulic cylinder; the other group of operation control valves can be used to control auxiliary actuators, such as the rotation of a hydraulic motor or the action of a small hydraulic cylinder. The operator can flexibly select to use one group or both groups of operation control valves to operate simultaneously according to the actual process requirements to realize complex hydraulic action combinations. At the same time, the operation handle of the operation control valve is designed in line with ergonomic principles, with light and flexible operation, and has positioning and locking functions, which is convenient for accurately controlling the action position and maintaining the state of the hydraulic components.

[0061] In the embodiment of the present invention, the design and implementation of the double-tank, double-motor, double-pump and double-operation hydraulic station can effectively improve the adaptability, reliability and working efficiency of the hydraulic system in a complex industrial environment.

[0062] Please refer to Figure 1 , for a multifunctional and efficient hydraulic station provided by an embodiment of the present invention, further including:

[0063] An oil condition analysis module, configured to obtain the oil condition data and vibration data of the hydraulic pump assemblies A2 and B3, and generate an oil influence coefficient;

[0064] A power balance distribution module, configured to distribute the flow rates of the hydraulic pump assembly A2 and the hydraulic pump assembly B3 according to the oil influence coefficient and generate a power balance distribution coefficient;

[0065] A rotational speed adjustment module, configured to adjust the rotational speeds of the hydraulic pump assembly A2 and the hydraulic pump assembly B3 according to the power balance distribution coefficient.

[0066] Preferably, the specific steps for the oil condition analysis module to generate the oil influence coefficient are as follows:

[0067] S101. Obtain the oil condition data of the hydraulic pump assembly A2 and the hydraulic pump assembly B3 and the vibration data of their respective pump bodies, where the oil condition data includes oil temperature, oil cleanliness, oil viscosity, temperature difference value between the oil and the external environment, and oil temperature fluctuation value;

[0068] S102. Perform parameter normalization on the oil condition data and the vibration data, and then obtain the oil temperature index, temperature difference index, oil temperature fluctuation index, cleanliness index, oil viscosity index, and vibration index of the two sets of hydraulic pump assemblies;

[0069] S103. Import the two sets of index information in S102 into the constructed oil condition analysis model to obtain the oil condition analysis coefficients of the hydraulic pump assembly A2 and the hydraulic pump assembly B3 and , and the oil condition analysis model is expressed as:

[0070]

[0071] where represents the oil condition analysis coefficient, represents the oil temperature index, represents the temperature difference index, represents the oil temperature fluctuation index, represents the oil viscosity index, represents the cleanliness index, represents the vibration index, represents the vibration correction coefficient (weakening the direct influence of vibration on the model and only enhancing the correction when the temperature fluctuation is significant), represents the weight and 1;

[0072] The oil temperature index and the oil viscosity index are both calculated using the min-max principle;

[0073] The vibration index is expressed as: , represents the pump body vibration frequency, Indicates the maximum safe frequency of pump body vibration;

[0074] The cleanliness index is expressed as: , Indicates the current concentration of oil particle contaminants, Indicates the maximum allowable concentration of oil particle contaminants;

[0075] The oil temperature fluctuation index is expressed as: , Indicates the maximum allowable temperature fluctuation value, Indicates the standard deviation of temperature in the most recent 10 minutes, Is the th temperature sampling value, Is the average temperature within the time period, Is the number of sampling points;

[0076] The temperature difference index is expressed as: , Indicates the temperature difference between the oil and the external environment, Indicates the maximum allowable temperature difference;

[0077] In the embodiments of the present invention, the oil state analysis model synthesizes parameters such as oil temperature, the temperature difference value between the oil and the external environment, the oil temperature fluctuation value, viscosity, and cleanliness, quantifies the impact of the oil on the system performance, and the vibration correction term Can enhance the correction effect of vibration on the model when the temperature fluctuation is significant, avoiding the analysis result being dominated by a single parameter.

[0078] Preferably, the specific steps for the power balance distribution module to distribute the flow rates of the hydraulic pump assembly A2 and the hydraulic pump assembly B3 according to the oil influence coefficient and generate the power balance distribution coefficient are as follows:

[0079] S201. Perform a ratio process on the obtained oil state analysis coefficients And Of the hydraulic pump assembly A2 and the hydraulic pump assembly B3. If , then select As the influence parameter and substitute it into the flow rate correction model to obtain the target flow rate Of the hydraulic pump assembly A2 and the target flow rate Of the hydraulic pump assembly. If , then select As the influence parameter and substitute it into the flow rate correction model to obtain the target flow rate Of the hydraulic pump assembly A2 and the target flow rate Of the hydraulic pump assembly B3. The flow rate correction model is expressed as:

[0080]

[0081] Among them, represents the target flow rate of the hydraulic pump assembly A2, represents the target flow rate of the hydraulic pump assembly B, represents the total required flow rate of the actuator, represents the oil influence coefficient, represents the flow distribution sensitivity coefficient;

[0082] S202. Substitute the obtained target flow rate and the target flow rate into the pre-constructed power balance distribution model to output the power balance distribution coefficient. The power balance distribution model is expressed as:

[0083]

[0084] Among them, the power balance distribution coefficient, represents the current outlet flow rate of the hydraulic pump assembly A2, represents the target flow rate of the hydraulic pump assembly A2, represents the current outlet flow rate of the hydraulic pump assembly B3, represents the target flow rate of the hydraulic pump assembly B3, represents the current outlet pressure of the hydraulic pump assembly A2, represents the current outlet pressure of the hydraulic pump assembly B3, represents the total required flow rate of the actuator, represents the pressure weight (the proportion of the balanced pressure difference in the power balance coefficient to avoid pressure fluctuations from dominating the adjustment logic), represents the maximum allowable pressure;

[0085] Among them, if or , ignore the flow deviation term or , only calculate the influence of on to avoid mis-triggering adjustments.

[0086] In this embodiment, the flow correction model maps the oil influence coefficient to the flow distribution ratio through the logistic function, and the sensitivity coefficient controls the steepness of the distribution curve to achieve a smooth transition and avoid the impact of flow mutations on the system. At the same time, the power balance distribution model can quantify the deviation between the current flow rate and the target flow rate, and evaluate the power balance in combination with the pressure difference (weight ). The higher the

[0087] Preferably, the specific steps for the rotational speed adjustment module to adjust the rotational speeds of the hydraulic pump assembly A2 and the hydraulic pump assembly B3 according to the dynamic balance distribution coefficient are as follows:

[0088] Compare the obtained with the corresponding balance threshold, and correspondingly adjust the rotational speeds of the hydraulic pump assembly A2 and the hydraulic pump assembly B3 according to the comparison result. Specifically:

[0089] If , then maintain the current rotational speed and adjust the pressure difference between the hydraulic pump assembly A and the hydraulic pump assembly B through the pressure compensation valve;

[0090] If , then proportionally distribute the rotational speed difference between the hydraulic pump assembly A and the hydraulic pump assembly B , and determine the target rotational speed of the hydraulic pump assembly A and the target rotational speed of the hydraulic pump assembly B ;

[0091] The rotational speed difference is expressed as:

[0092]

[0093] represents the rotational speed difference between the hydraulic pump assembly A and the hydraulic pump assembly B, represents the dynamic balance distribution coefficient, represents the total rotational speed requirement, represents the current rotational speed of the hydraulic pump assembly A, represents the current rotational speed of the hydraulic pump assembly B;

[0094] The target rotational speed of the hydraulic pump assembly A is expressed as:

[0095]

[0096] represents the target rotational speed of the hydraulic pump assembly A, represents the current rotational speed of the hydraulic pump assembly A, represents the rotational speed difference between the hydraulic pump assembly A and the hydraulic pump assembly B, represents the target flow rate of the hydraulic pump assembly A, represents the flow rate required by the actuator;

[0097] The target rotational speed of the hydraulic pump assembly B is expressed as:

[0098]

[0099] represents the target rotational speed of the hydraulic pump assembly B, represents the total rotational speed requirement, represents the target rotational speed of the hydraulic pump assembly A;

[0100] If , then independently adjust and , adopt the adjustment strategy of reducing the high rotational speed and increasing the low rotational speed, promote the rotational speeds of the hydraulic pump assembly A and the hydraulic pump assembly B to be gradually balanced, with the rotational speed adjustment amount being 40 rpm each time, and the fuzzy PID control can be used to quickly adjust the rotational speeds of the two pumps.

[0101] The present invention evaluates the health state of the oil in real time through multi-parameter normalization analysis (temperature, cleanliness, viscosity, etc.) and vibration correction, prevents equipment failures caused by oil deterioration, and at the same time, based on the oil influence coefficient and the logistic function model, adaptively adjusts the flow rates of the two pumps to ensure that each pump is in the best working condition under the total required flow rate. At the same time, combining the flow deviation and the pressure difference, the dynamic balance coefficient is quantified , and the rotational speed adjustment strategy is adjusted in stages, significantly improving the system stability.

[0102] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusively, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0103] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional and efficient hydraulic station, characterized in that: At least two hydraulic pump assemblies, hydraulic pump assembly A and hydraulic pump assembly B, are installed on the hydraulic station body, and also include: The oil state analysis module is used to obtain the oil state data and vibration data of the hydraulic pump assembly A and the hydraulic pump assembly B, and generate the oil influence coefficient; A power balance distribution module is used to distribute the flow of the hydraulic pump assembly A and the hydraulic pump assembly B according to the oil influence coefficient and generate a power balance distribution coefficient; The speed adjustment module is used to adjust the speed of the hydraulic pump assembly A and the hydraulic pump assembly B according to the power balance distribution coefficient; The specific steps of the oil state analysis module generating the oil influence coefficient are as follows: S101, obtaining oil status data of hydraulic pump assembly A and hydraulic pump assembly B and vibration data of their respective pump bodies, wherein the oil status data includes oil temperature, oil cleanliness, oil viscosity, temperature difference between the oil and the external environment, and oil temperature fluctuation value; S102, performing parameter normalization processing on the oil state data and the vibration data, thereby obtaining the oil temperature index, temperature difference index, oil temperature fluctuation index, cleanliness index, oil viscosity index and vibration index of the two groups of hydraulic pump components; S103: Generate the oil state analysis coefficients of hydraulic pump assembly A and hydraulic pump assembly B according to the two sets of index information in S102 as well as ; Generate the oil state analysis coefficients of hydraulic pump component A and hydraulic pump component B as well as The specific method is: import the two sets of index information obtained in S102 into the pre-built oil state analysis model to generate as well as , the oil state analysis model is expressed as: in, Represents the oil state analysis coefficient, Indicates the oil temperature index, represents the temperature difference index, Indicates the oil temperature fluctuation index, Indicates the oil viscosity index, Indicates the cleanliness index. represents the vibration index, represents the vibration correction factor, represents the weight and .

2. The multifunctional and efficient hydraulic station according to claim 1, characterized in that: The specific steps of the power balance distribution module distributing the flow of the hydraulic pump assembly A and the hydraulic pump assembly B according to the oil influence coefficient and generating the power balance distribution coefficient are as follows: S201, the oil state analysis coefficients of the hydraulic pump assembly A and the hydraulic pump assembly B are obtained as well as Perform ratio processing, if , then select Substituted into the flow correction model as an influencing parameter, if , then select Substitute the influencing parameters into the flow correction model to obtain the target flow of hydraulic pump component A. and the target flow rate of hydraulic pump assembly B , the flow correction model is expressed as: in, represents the target flow rate of hydraulic pump assembly A, represents the target flow rate of hydraulic pump assembly B, Indicates the total flow required by the actuator, represents the oil influence coefficient, Indicates the flow allocation sensitivity coefficient; S202: Obtain target traffic And target traffic , substituted into the pre-built power balance distribution model, and output the power balance distribution coefficient. The power balance distribution model is expressed as: in, The power balance distribution coefficient, Indicates the current outlet flow of hydraulic pump assembly A, represents the target flow rate of hydraulic pump assembly A, Indicates the current outlet flow of hydraulic pump assembly B, represents the target flow rate of hydraulic pump assembly B, Indicates the current outlet pressure of hydraulic pump assembly A, Indicates the current outlet pressure of hydraulic pump assembly B, Indicates the total flow required by the actuator, represents the pressure weight, Indicates the maximum allowable pressure.

3. The multifunctional and efficient hydraulic station according to claim 2 is characterized in that: like or , ignoring the flow deviation term or , only calculate right to avoid false triggering of adjustments.

4. The multifunctional and efficient hydraulic station according to claim 3, characterized in that: The specific steps of the speed adjustment module adjusting the speed of the hydraulic pump assembly A and the hydraulic pump assembly B according to the power balance distribution coefficient are as follows: Will obtain The speeds of the hydraulic pump assembly A and the hydraulic pump assembly B are adjusted accordingly according to the comparison results, specifically: like , the current speed is maintained, and the pressure difference between the hydraulic pump assembly A and the hydraulic pump assembly B is adjusted through the pressure compensation valve; like , the speed difference between hydraulic pump assembly A and hydraulic pump assembly B is proportionally distributed , determine the target speed of hydraulic pump assembly A based on the speed difference and the target speed of hydraulic pump assembly B ; The speed difference is expressed as: Indicates the speed difference between hydraulic pump assembly A and hydraulic pump assembly B, represents the power balance distribution coefficient, Indicates the total speed requirement, Indicates the current speed of hydraulic pump assembly A, Indicates the current speed of hydraulic pump assembly B; The target speed of the hydraulic pump assembly A is expressed as: represents the target speed of hydraulic pump assembly A, Indicates the current speed of hydraulic pump assembly A, Indicates the speed difference between hydraulic pump assembly A and hydraulic pump assembly B, Indicates the target flow of hydraulic pump component A, Indicates the flow required by the actuator; The target speed of the hydraulic pump assembly B is expressed as: represents the target speed of hydraulic pump assembly B, Indicates the total speed requirement, represents the target speed of the hydraulic pump assembly A; like , then adjust independently as well as , an adjustment strategy of reducing high speed and increasing low speed is adopted to gradually balance the speeds of hydraulic pump component A and hydraulic pump component B. The speed adjustment amount is 40rpm each time, and fuzzy PID control is used to quickly adjust the speeds of the two pumps.

5. The multifunctional and efficient hydraulic station according to claim 1, characterized in that: It also includes a multi-layer partition assembly and a high-efficiency filter installed in the hydraulic station body, the multi-layer partition assembly includes partitions A, B and C which are linearly arranged in the oil tank and divide the oil tank into four areas A, B, C and D. Four oil passages are opened at two-thirds of the height of partition A, the partition B adopts a porous partition, and an array of small holes are opened in an area above one-half of the height of partition B. A V-shaped partition is installed at the bottom of area B to make the bottom of area B funnel-shaped, and a slag discharge pipe with a valve is connected to the lowest point thereof, and the partition C adopts a screen partition.

6. The multifunctional and efficient hydraulic station according to claim 5, characterized in that: The hydraulic pump assembly A and the hydraulic pump assembly B have the same structure. The hydraulic pump assembly A includes an oil tank A, a motor A and a hydraulic pump A. The two oil tanks are equipped with independent oil inlets, oil outlets, oil drain ports and liquid level monitoring devices, and the oil between the two can be supplemented or isolated through a connecting pipe with a control valve.

7. The multifunctional and efficient hydraulic station according to claim 6, characterized in that: An oil temperature sensor and a cooler are installed inside each oil tank. The oil temperature sensor monitors the oil temperature in real time. When the oil temperature exceeds the set upper limit, the cooler automatically starts to dissipate heat. The cooler adopts an efficient fin structure, combined with forced air cooling or water cooling, to quickly reduce the oil temperature. At the same time, the connecting pipe between the two oil tanks can realize the exchange of hot oil and cold oil. The return oil of the multifunctional and efficient hydraulic station is installed with an oil return filter.

8. The multifunctional and efficient hydraulic station according to any one of claims 5 to 7, characterized in that: The multifunctional and efficient hydraulic station also includes two groups of operating control valves and corresponding connecting pipelines and control circuits.

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