12 results about "Hydraulic load" patented technology

This invention discloses a dynamic inversion method and system for equivalent elastic parameters of porous water-bearing rocks, relating to the field of underground engineering technology. The method includes the following steps: real-time acquisition of lining strain data, displacement data, and pore water pressure data of underground structures in porous water-bearing rock strata using on-site monitoring equipment; preprocessing of the acquired raw data to remove outliers and noise; establishing an inversion objective function based on the preprocessed data and the correlation between pore water pressure and the equivalent elastic modulus and equivalent Poisson's ratio of the rock; solving the inversion objective function using an inversion algorithm to obtain the equivalent elastic modulus and equivalent Poisson's ratio of the surrounding rock; verifying and correcting the obtained equivalent elastic modulus and equivalent Poisson's ratio, and outputting the final result. This invention can provide accurate input parameters for calculating the hydraulic load of underground structures in porous water-bearing rock strata, improving the accuracy and timeliness of underground engineering design and safety assessment.

The application provides a hydraulic load simulation active and passive, multi-working condition loading method and a hydraulic system, and the application realizes passive loading and active loading of hydraulic load simulation through a load simulation hydraulic system with a loading hydraulic pump, an oil supplement pump, a load simulation hydraulic cylinder and a three-way proportional pressure reducing overflow valve group as the main body, and positive load and negative load working condition simulation can be realized. The application can effectively realize active loading and passive loading of hydraulic load simulation through two modes of pressure reduction and overflow of the three-way proportional pressure reducing overflow valve and combined oil supply of the loading pump and the oil supplement pump. In addition, in the active loading mode, active extension and active retraction of the load simulation hydraulic cylinder can be adjusted, and the active extension and active retraction pressure can be adjusted by the three-way proportional pressure reducing overflow valve, so that four working condition simulations of positive load working condition 1, positive load working condition 2, negative load working condition 1 and negative load working condition 2 can be realized.

This invention relates to the field of municipal water supply and drainage engineering, and discloses an intelligent diversion and discharge system and method for combined sewer systems. The system includes a sewer body, a gate assembly, a monitoring assembly, and a control cabinet. The gate assembly includes a first electric gate located at the interception outlet and a second electric gate located at the direct discharge outlet. The PLC controller switches between interception mode, direct discharge mode, and emergency discharge mode based on a comparison of real-time liquid level with interception thresholds and emergency discharge thresholds. Furthermore, it can adjust the control strategy by incorporating rainfall intensity, sewage treatment plant influent hydraulic load, and water quality parameters to achieve sewage interception, direct discharge of low-pollution rainwater, and emergency pressure relief at high water levels.

The present application relates to the technical field of slope anti-sliding stability analysis, and particularly relates to a method for analyzing and calculating the anti-sliding stability of a discharge building outlet slope. The method comprises the following steps: obtaining discharge building data; collecting discharge building external structure data based on the discharge building data; determining the initial condition of the building outlet slope based on the discharge building external structure data and the discharge building data; analyzing the water flow fluctuation of the discharge building according to the discharge building data; detecting the aggravation degree of the hydraulic load of the outlet slope based on the initial condition of the building outlet slope and the water flow fluctuation of the discharge building; and determining the slope body penetration deformation trend of the slope based on the aggravation degree of the hydraulic load of the outlet slope. The present application analyzes the anti-sliding stability of the slope to achieve more accurate and efficient slope reinforcement.

This invention relates to a hydraulic load-sensitive multi-way valve testing system, comprising a driver, a load-sensitive pump assembly, a variable hydraulic resistance, a load-sensitive compensator, and a directional valve connected in series to form a hydraulic output circuit. The driver controls the load-sensitive pump assembly to drive hydraulic oil upwards, which then experiences a pressure drop after passing through the variable hydraulic resistance. Finally, the hydraulic oil is output through the directional valve. The load-sensitive compensator is connected to the directional valve. The load-sensitive pump assembly includes an output pump, a pressure control valve, and a flow control valve. The driver drives the output pump. The rod chamber of the output pump is connected to the pressure control valve and the flow control valve. The output pump is connected to the directional valve, and the variable hydraulic resistance is located between the output pump and the directional valve. The pressure control valve is connected to the flow control valve and is used to limit the maximum working pressure. The inlet of the flow control valve is connected to the inlet of the directional valve. This invention provides a hydraulic load-sensitive multi-way valve testing system with small measurement errors.

The application discloses a kind of surrounding rock safety monitoring method and system based on underground structure hydraulic load prediction, applied to surrounding rock safety monitoring technical field.The method comprises the following steps: the data required for surrounding rock stripping risk early warning is collected by sensor arranged at each monitoring point, while obtaining surrounding rock and lining structure data;Establish a finite element model, calculate the distribution of structure hydraulic load in pore water-bearing rock formation;Establish a surrounding rock stripping risk early warning model, based on the distribution of hydraulic load and the monitoring data collected by the sensor to carry out stripping risk early warning;The stripping risk early warning result is corrected in combination with threshold value;According to the corrected stripping risk early warning result, the corresponding response mechanism is executed.The application carries out surrounding rock safety risk early warning based on underground structure hydraulic load prediction, improves the accuracy of risk early warning, compared with the traditional strain numerical early warning scheme, the application can analyze the risk cause and propose targeted active prevention and control measures.

The present invention provides a low-power driving method and apparatus for an underwater surfboard propeller motor, comprising: acquiring the water flow resistance variation characteristics of the underwater surfboard propeller during actual operation, and establishing a dynamic mapping model between the motor output power and water flow conditions; based on the dynamic mapping model, matching the motor drive signal with the propeller's hydraulic load requirements in real time; employing an adaptive pulse width modulation strategy, dynamically adjusting the voltage amplitude and frequency of the motor drive signal according to the motor's real-time operating parameters and real-time water flow condition feedback, thereby reducing circuit switching losses and copper losses; and automatically activating an energy-efficient sleep mode under light load and idling conditions to maintain minimum power consumption operation. This invention solves the technical problems of high energy consumption and poor adaptability to operating conditions in existing underwater surfboard propellers.

This invention discloses a multi-sensor fusion-based method, control method, system, equipment, storage medium, and excavator for excavator stress and strain monitoring, relating to the field of engineering machinery control technology. The monitoring method includes: S1 sensor array data acquisition; S2 noise reduction processing; S3 fusion modeling and state assessment; and S4 load path analysis. The control method specifically includes: A1 graded threshold setting, A2 control strategy implementation, and A3 control strategy library matching. The system includes: a sensor array assembly, a data processing module, and a control module. This invention overcomes existing limitations through multi-dimensional sensing technology. By integrating multi-source data such as structural stress, hydraulic load, and operating posture, and employing a noise reduction fusion algorithm to eliminate environmental interference, it overcomes the limitations and data distortion problems of single-sensor monitoring, achieving real-time monitoring of the stress state of key excavator components and significantly improving the reliability of monitoring results under complex working conditions.

The disclosure relates to a volume flow supply, in particular for closed center LS systems, comprising a pressure supply device and a pressure balance as components of a supply system for supplying fluid of a load which can be hydraulically connected to the supply system. The pressure supply device provides a volume flow when required in order to supply the hydraulic load in that the pressure balance is made of a circulation pressure balance which discharges a possible surplus volume flow out of the supply flow. The volume flow supply also comprises a controller which reduces the surplus volume flow to a minimum by actuating the pressure supply device.

The present application relates to unconventional oil and gas field produced wastewater treatment and resource utilization technical field. Specifically relates to a kind of device and method using slow filtration as the pretreatment of shale gas produced water desalination, the device includes the water inlet adjustment system, slow filtration pretreatment system and desalination treatment system communicated in turn, the slow filtration pretreatment system is set before desalination treatment system, for removing suspended particles, colloidal material, organic pollutants and scale precursors in shale gas produced water.The present application is by constructing low hydraulic load, long residence time slow filtration process, without high energy consumption or chemical reagent conditions significantly improve water quality, effectively reduce the pollution and wetting risk of subsequent desalination membrane process, improve system stability and operating life.The present application simple structure, low operating energy consumption, maintenance cost is small, suitable for high salinity shale gas produced water engineering pretreatment.

The invention provides a control device and method for preventing carbon source loss of a primary sedimentation tank, and belongs to the technical field of primary sedimentation tank water collecting tanks, the device comprises a water outlet area, a water collecting tank, an intercepting mechanism, a sewage discharge hole, a sludge discharge pump, a sludge discharge valve, a sludge height sensor, an inlet end sensor group, an outlet end sensor group and a controller, the height-adjustable intercepting mechanism is arranged in the water collecting tank of the primary sedimentation tank, the water quality and the sludge content are monitored in real time by combining an inlet end sensor group, an outlet end sensor group and a sludge height sensor, and the height of the intercepting plate can be flexibly adjusted according to the change of the water quality of inlet water, so that the content of a carbon source in water flow entering a water collecting channel is accurately controlled; the controller is in linkage with the sludge discharge pump and the sludge discharge valve to prevent sludge from excessively adsorbing a carbon source, and meanwhile, the initial height of the intercepting plate is differentially set according to the difference of hydraulic loads at different positions of the water collecting tank, so that the problem of carbon source loss caused in the process of efficiently removing suspended solids in the existing primary sedimentation tank is effectively solved.