439 results about "Tank pressure" patented technology

The invention discloses a liquid hydrogen storage tank pressure prediction method, device and system, and the method comprises the steps: obtaining process parameters of a liquid hydrogen storage tank, and carrying out the preprocessing, and obtaining input parameters; and inputting the input parameters into the trained liquid hydrogen storage tank pressure prediction model, and outputting an in-tank pressure prediction value of the liquid hydrogen storage tank after the predicted storage duration. According to the method, the adverse effect on the generalization performance of the neural network due to too few data samples is reduced, and the precision of predicting the pressure of the liquid hydrogen storage tank is effectively improved.

The invention discloses an extended-range hydrogen fuel power ship propulsion system, which relates to the technical field of ship propulsion and comprises an acquisition module, a quantum annealing optimization module and a quantum chip, the acquisition module is used for eliminating noise interference of acquired hydrogen energy ship power parameters through a Kalman filtering algorithm and generating a standardized data packet, and the quantum chip is used for receiving the standardized data packet and outputting the standardized data packet. The method comprises the following steps: mapping hydrogen energy ship power parameters into an Isin model, generating a control instruction according to a hydrogen fuel consumption rate, an equipment life attenuation coefficient and a navigation task priority weight, inputting the control instruction into a simulation model of a proton exchange membrane by a proton membrane regulation and control module, and dynamically regulating a hydrogen production rate and fuel cell power, according to the system, the efficient hydrogen energy closed-loop monitoring unit and the three-level safety protocol are adopted, the response speed and precision are improved, the stability and safety are remarkably enhanced, it is ensured that a ship can reliably operate under the complex working condition, and potential safety risks are reduced.

In order to improve liquid hydrogen storage on aircraft, a liquid hydrogen tank is integrated into the fuselage of the aircraft. At least one portion of the tank wall is formed by specially adapted tank skin panels and / or a pressure bulkhead. The parts forming the tank wall are strengthened to contain a tank pressure of about 3 bar.

An electrical power (EP) generation system (100) for an aircraft comprising a fuel cell (3), a cryogenic tank (1), a conditioning circuit (C1) configured to heat a liquid fuel stream (LH2) to a tank pressure (P2) to supply a gaseous fuel stream (GH2) to the fuel cell (3), a pressurization circuit (C2) to increase the gas pressure (P1) of the gaseous phase (PHL) in said cryogenic tank (1), the pressurization circuit (C2) comprising at least one flow control device (4), a gas pressure (P1) sensor (10) for measuring the gas pressure (P1) of the gaseous phase (PHG), and a computer (5) configured to control the flow control device (4) based on at least said gas pressure (P1) to control the tank pressure (P2). Abstract figure: Figure 1

The invention discloses a resin tank pressure resistance test method and system based on deep learning, and relates to the technical field of data processing. The method comprises the following steps: performing significant feature analysis based on a surface image of a target resin tank, determining a plurality of abnormal areas, performing defect identification, and constructing a defect distribution diagram according to an identification result; based on equipment attributes, setting retrieval constraint conditions to retrieve voltage withstanding test records of similar products, obtaining a sample data set, performing supervision training on the deep learning operator by using the sample data set, and constructing a voltage withstanding performance predictor; environment parameters of the target resin tank in a preset time zone are collected, the defect distribution diagram and the environment parameters are input into the pressure resistance predictor, and the predicted maximum pressure bearing value is output to serve as a pressure resistance test result. The technical problem that in the prior art, a resin tank pressure resistance test result is not accurate enough is solved, defect distribution and environmental parameters are analyzed in combination with deep learning, and the technical effect of improving pressure resistance prediction accuracy is achieved.

The invention discloses an intelligent monitoring method and system for an intelligent breather valve, and relates to the technical field of intelligent valve monitoring. Fitting a circulation volume curve based on the uploaded tank body pressure and circulation volume in combination with data of valves with different calibers; the opening state of the valve is judged according to the logic relation between the state of the proximity switch and the pressure of the tank body; and calculating the discharge amount or the suction amount based on the opening state of the valve and the circulation volume curve. According to the method, on the basis of the relation between the tank pressure and the circulation volume, the circulation volume curve is fitted through the quartic equation, errors of a traditional linear model are avoided, and the applicability to valves with different calibers is guaranteed. The opening state of the valve is judged according to the proximity switch state and pressure relation, and the defect that a traditional system is inaccurate or delayed in judgment of the valve state is overcome. By calculating the emission amount and the suction amount and combining VOCS concentration monitoring, emission of harmful gas is effectively reduced, and the environmental protection requirement is met.

The invention relates to the technical field of hydrogen energy storage and control, and discloses a hydrogen storage tank pressure and temperature control method and device based on model predictive control, and the method comprises the steps: determining a hydrogen state equation of a hydrogen storage tank, and constructing a hydrogen mass conservation equation and a hydrogen energy conservation equation; based on the hydrogen mass conservation equation and the hydrogen energy conservation equation, a state prediction model of the hydrogen storage tank state related to the net hydrogen flow change is established, and the hydrogen storage tank state comprises hydrogen pressure and hydrogen temperature; a target function is constructed with the hydrogen storage tank state and the net hydrogen flow as control targets, and constraint conditions are configured; on the basis of the input net hydrogen flow sequence of the state prediction model and the predicted hydrogen storage tank state sequence output by prediction, the target function is subjected to minimum solving, and the optimal net hydrogen flow sequence is obtained through iteration; and adjusting an inlet / outlet valve of the hydrogen storage tank based on the optimal net hydrogen flow sequence. The operation efficiency of the hydrogen storage system can be improved.

The invention relates to the technical field of cooling water abnormity monitoring, in particular to a steel slag pressure hot stuffy rolling cooling water abnormity alarm system and method.Roll gap cooling water flow, injection temperature, hot stuffy tank pressure and bearing vibration data are collected, a dynamic mapping relation between position coordinates of a spraying opening and a water inlet valve is established, temperature and pressure time sequence offset is calculated, and the temperature and pressure time sequence offset is calculated; the temperature judgment boundary is corrected by combining the pressure bearing limit value of the sealing ring and the real-time flow, and an abnormal alarm is triggered according to the temperature over-limit frequency in the continuous time period. A multi-source analysis framework is constructed by integrating temperature, flow, pressure and vibration parameters, single-point monitoring limitation is eliminated, nonlinear influence of the flow on tank pressure is quantified by adopting a dynamic weight model, a self-adaptive temperature threshold value is generated in combination with a sealing pressure bearing limit, dynamic coupling of an alarm mechanism is realized, an abnormal scene is positioned based on time sequence analysis and coordinate mapping, and the accuracy of monitoring is improved. The sealing hidden danger is pre-judged through the thermal unbalance coefficient, and the pressure rate deviation is intercepted in real time.

The invention relates to a BOG dynamic balance treatment system for marine ship and land liquid cargo thin film tanks. The system comprises a first thin film tank and a second thin film tank, the first thin film tank is connected with the second thin film tank; the device further comprises a BOG cooling and pressure regulating mechanism. The system further comprises a liquid cargo processing mechanism. The BOG cooling and pressure regulating mechanism is connected with the second thin film tank; the liquid cargo processing mechanism is connected with the first thin film tank and the second thin film tank. And the BOG cooling and pressure regulating mechanism is connected with the liquid cargo treatment mechanism, so that the liquid cargo from the first thin film tank exchanges heat with the BOG from the second thin film tank. The first thin film tank is a ship thin film tank, and the second thin film tank is a land liquid cargo thin film tank; or the second film tank is a ship film tank, and the first film tank is a land liquid cargo film tank. Compared with the prior art, the problem that storage of compressed low-temperature liquefied gas such as LNG is affected due to the fact that the temperature of a land liquid cargo thin film tank (or a ship thin film tank) is increased due to the fact that the land liquid cargo thin film tank (or the ship thin film tank) is exposed to the sun and BOG generated by liquid cargo such as LNG is increased can be effectively solved.

The utility model relates to the technical field of distributors, and discloses a double-line distributor, a main body mechanism comprises a mounting table, the top of the mounting table is fixedly connected with a left oil outlet joint, the top of the left oil outlet joint is provided with a left oil outlet, the top of the mounting table is fixedly connected with a right oil outlet joint, and the right oil outlet joint is provided with a right oil outlet. A right oil outlet is formed in the top of the right oil outlet connector, and a valve body is fixedly connected to the bottom of the mounting table. According to the utility model, the channel p1 is arranged, the channel p1 is connected with pressure oil, and the channel p2 is connected with an oil return tank. Pressure oil enters a containing cavity a1 and pushes a reversing plunger assembly to move rightwards, after reversing is in place, pressure oil of the containing cavity a1 and a channel p1 is connected into a containing cavity b1 through a channel c1, a metering plunger moves rightwards and pushes lubricating oil of a containing cavity b2 to reach a right oil outlet through an annular groove in the reversing plunger assembly, and at the moment, one-time oil discharging is completed; certain pressure of the oil outlet is guaranteed, and jet lubrication of thin lubricating oil can be achieved at a lubricating point.

The invention relates to a tank device (1) for storing a gaseous medium, in particular hydrogen, comprising a valve device (2), and a tank (10) and having a longitudinal axis (11). The valve device (2) has a valve housing (20), which is equipped with a pilot valve element (18) that can be moved along the longitudinal axis (11), said pilot valve element (18) interacting with a first valve seat (27) in order to open and close a first outlet opening (56) and thus forming a pilot valve (44). The valve device (2) can be actuated by means of a solenoid coil (14), wherein a main valve element (19) is arranged in the valve housing (20), said main valve element (19) interacting with a second valve seat (40) in order to open and close a second outlet opening (31) and thus forming a main valve (191). The tank device (1) comprises a screw-in housing element (24), wherein the valve device (2) is integrated into a neck region (6) of the tank (10) in a fixed manner by means of the screw-in housing element (24). The valve device (2) is arranged in the tank (10) by means of a tank pressure and is in a closed position by means of a spring (26) when the solenoid coil (14) is deactivated.

The invention belongs to the technical field of central transmission thickener operation online monitoring, and relates to a central transmission thickener operation online monitoring system based on artificial intelligence. According to the invention, by analyzing the state change requirements of each change composition part of the target center transmission thickener and analyzing the adjustment requirements of the process flow of the thickener according to the detected pressure condition of the concentration tank, accurate and convenient operation and real-time adjustment are facilitated, the occurrence of rake pressing or leakage and leakage accidents of the thickener is also prevented, and the working efficiency of the thickener is improved. By analyzing the pressure abnormality evaluation of the concentration tank of the target center transmission thickener, the pressure abnormality can be found and processed in time, the prolonged downtime caused by equipment failure is avoided, the production efficiency is improved, and the pressure abnormality of the concentration tank of the target center transmission thickener can be accurately detected by analyzing the pressure abnormality reason of the concentration tank of the target center transmission thickener. And maintenance personnel can quickly and accurately find fault points, so that the maintenance time and the maintenance cost are reduced, and the stable operation of the thickener is further ensured.

The invention discloses an automatic pneumatic conveying and pressure regulating and controlling method for coking fly ash, and relates to the field of coking fly ash treatment. The mode that a plurality of conveying tanks work alternately is adopted, it is guaranteed that one tank is in a preparation or pressurized state at any time, the other tank conducts conveying operation, and therefore the continuity and stability of the system are guaranteed. And secondly, by calculating the conveying amount of coking fly ash per hour and setting the tank pressure target value corresponding to each conveying tank based on the conveying amount, the whole conveying process can adapt to changes of production requirements, and stable pressure control can be kept. Moreover, nitrogen is used as a fluidizing medium, so that the problem of material blockage is effectively avoided, and the conveying efficiency and safety are improved. In addition, assemblies such as a powder adjusting valve and a pneumatic adjusting valve are arranged, the opening degree of the valves is dynamically adjusted according to the real-time conveying speed, and accurate control over the flow and stable maintenance of pressure in the conveying process are guaranteed.

The invention provides an LNG tank pressure regulating mechanism which comprises an LNG tank body, a first partition plate is fixedly mounted in the LNG tank body, and the first partition plate divides the interior of the LNG tank body into a pressure relief cavity and a storage cavity; a communicating groove is formed in the first partition plate, a fixing pipe is arranged in the communicating groove, a plurality of evenly-distributed pressure relief holes are formed in the side wall of the fixing pipe, the end, close to the storage cavity, of the fixing pipe is open, the other end of the fixing pipe is closed, an elastic assembly and a sealing gasket are arranged in the fixing pipe, and one end of the elastic assembly is connected with a sealing piece; the sealing piece is driven by the elastic force of the elastic assembly to abut against the sealing gasket in a sealed mode. When the pressure in the storage cavity reaches a dangerous value, the pressure pushes the sealing piece to leave the sealing gasket and extrudes the elastic assembly, so that the natural gas in the storage cavity part enters the fixed pipe and enters the pressure relief cavity through the plurality of uniformly distributed pressure relief holes, the pressure in the storage cavity is reduced, and safety accidents caused by overlarge pressure in the storage cavity are avoided.

In a vehicle with an internal combustion engine, a system retains evaporative emissions of hydrocarbon vapor from fuel. A computer detects the occurrence of a leak in that system by receiving (410) a fuel tank pressure value (MEASURED_PRESSURE) from a tank pressure sensor. While the engine is running, the computer interacts with a controller to create a vacuum condition in the system. The computer operates (430) a pre-trained network, with receiving (431) further sensor data (FURTHER_DATA) from the vehicle, and obtaining (432) a vacuum estimation value (ESTIMATED_PRESSURE) that represents the vacuum. The computer determines the leak by comparing (440) the measured pressure value (MEASURED_PRESSURE) with the estimated value (ESTIMATED_PRESSURE).

The invention discloses a transformer explosion-proof and fault monitoring device and method, and belongs to the technical field of power equipment. The specific device comprises a transformer oil tank pressure reduction module, an on-load tap-changer pressure reduction module, an oil and gas separation tank, a gas discharge pipeline, a nitrogen injection module, a transformer protection control cubicle, an oil-immersed cable oil tank pressure reduction module and a transformer module. The specific method comprises the following steps: acquiring transformer data; calculating a power factor / loss factor according to the acquired transformer bushing current; setting early warning threshold values of transformer capacitance, a power factor / loss factor and a partial discharge signal, and judging whether the data reach the corresponding early warning threshold values or not; and after any data in the judgment result reaches an early warning threshold value, judging that the transformer has a fault, triggering early warning and performing transformer pressure relief, thereby realizing explosion prevention and fault monitoring of the transformer. According to the invention, pressure relief protection of the transformer cable box, the on-load tap-changer module and the main oil tank is realized, and online monitoring and fault diagnosis of key monitoring signals are provided.

The invention discloses an air distribution device for semiconductor processing and an air supply system thereof. The air distribution device comprises an air distribution block, a plurality of air distribution pipelines communicated with the air distribution block, and automatic pressure control valve assemblies arranged in the air distribution block, wherein the number of the automatic pressure control valve assemblies is the same as that of the air distribution pipelines; an air inlet channel and a plurality of air distribution channels communicated with the tail end of the air inlet channel are arranged in the air distribution block; an automatic pressure control valve assembly is arranged in each gas distribution channel, and the automatic pressure control valve assemblies automatically control the gas distribution opening degree of the gas distribution channels according to the current pressure of the gas distribution channels. The automatic pressure switch valve is arranged in the gas distribution block, the opening degree of each gas distribution channel can be kept consistent, so that the output gas flow is the same, meanwhile, as the automatic pressure switch can adjust the opening degree according to the gas pressure, when the pressure of the gas storage tank is reduced, the injection pressure of the gas outlet can still be kept, and finally the uniformity and high pressure of the gas quantity of each sub-chamber are realized. And the film deposition quality is improved.

Methods and systems for diagnosing an evaporative emissions system are discussed. An example method includes diagnosing a venturi pump of an evaporative emissions system based on feedback from an evaporative leak check module (ELCM) pressure sensor and a fuel tank pressure transducer (FTPT). An engine of a vehicle is off during the diagnosing.

The invention provides a device and a method for reducing exhaust loss by using the pressure of a liquid hydrogen storage tank, and relates to the technical field of liquid hydrogen storage and transportation safety. The device comprises an adsorption storage assembly, a desorption recovery assembly and an adsorption enhancement assembly which are arranged in a gas pillow of the liquid hydrogen storage tank. The adsorption and storage assembly is communicated with the air pillow through a one-way mechanical low-temperature valve, is internally provided with a solid adsorption material and a vacuum heat insulation cylinder, and is used for adsorbing and storing evaporation gas and reducing the tank pressure when the tank pressure is increased; the adsorption enhancing assembly comprises a low-temperature hydrogen regulating valve and a low-temperature heat exchanger, and the throttling effect of high-pressure hydrogen in the tank is used for refrigerating an adsorption material, so that the adsorption capacity of the adsorption material is improved; the desorption recovery assembly heats an adsorption material through an intermediate heater, and controllable release of hydrogen is achieved. According to the invention, the active management of the pressure of the liquid hydrogen storage tank and the efficient recovery of the boil-off gas are realized, the exhaust period is obviously prolonged, the hydrogen loss is reduced, and the storage and transportation economy and safety are improved.

The invention belongs to the technical field of blast furnace ironmaking in the ferrous metallurgy industry, and relates to a pulverized coal bunker pressure control method and device of a blast furnace coal injection system. By establishing an injection tank pressure relief control model and a pulverized coal bunker pressure control model, the pulverized coal bunker pressure is adjusted through the two models in the injection tank pressure relief execution period; the pressure of the pulverized coal bunker is accurately controlled to be in a micro-negative pressure state. The system has the advantages that the pressure of the pulverized coal bunker is accurately controlled, stable production of the system can be guaranteed, independent production of the coal pulverizing system and the injection system can be achieved, meanwhile, the automatic control level of the system is greatly improved, the workload of operators is reduced, and remarkable technical and economic benefits are achieved.

The utility model relates to the technical field of pressure testing, and discloses a tank body pressure testing device, which solves the problem of tank body pressure testing in the current market, and comprises a main tank body, a top sealing cover fixedly connected to the top of the main tank body, a supporting column fixedly connected to the bottom of the main tank body, and a pressure release valve arranged at the bottom of the main tank body, a heating box is fixedly connected to one side of the main tank body, a control machine body is fixedly connected to one side of the heating box, a pressure pump is fixedly connected to the other side of the heating box, and a side supporting table is fixedly connected to the bottom of the pressure pump. The stability of the supporting column in the supporting process is improved, and the testing accuracy is improved; and meanwhile, the cooling liquid circulates along the inner side of the circulating box, so that the thermal insulation layer can be uniformly and quickly cooled, the cooling efficiency of the main tank body is improved, and the pressure test time of the main tank body is shortened.

A hydrogen fuel system for a work machine is disclosed. The hydrogen fuel system comprises a hydrogen storage tank containing hydrogen, the hydrogen being at least one of a liquid hydrogen or a gaseous hydrogen; a hydrogen power unit configured to consume the hydrogen from the hydrogen storage tank, the hydrogen power unit including at least one of a plurality of fuel cells or a hydrogen combustion engine; a boil-off pressure relief valve in fluid communication with the hydrogen storage tank; and a tank pressure sensor in communication with the boil-off pressure relief valve. The boil-off pressure relief valve is configured to, when the tank pressure sensor detects a pressure inside the hydrogen storage tank that exceeds a boil-off pressure threshold, vent the gaseous hydrogen to a boil-off fuel line fluidly connected to the hydrogen power unit.

The invention relates to a blast furnace coal injection optimization control method based on injection speed comparison and a blast furnace coal injection system, which are characterized in that based on blast furnace coal injection process requirements, logic design is carried out on remote automatic coal injection control requirements, and the opening degrees of a fluidizing valve and a gulp valve are automatically adjusted, so that the coal injection quantity required by a uniform injection blast furnace is met; the pulverized coal combustion rate and the molten iron quality are improved. A centralized control function picture is developed, a one-key input automation mode is achieved, and meanwhile the actual coal injection amount is monitored in real time. The blast furnace coal injection system is additionally provided with a safety early warning mechanism, alarm reminding is carried out when the air supply flow and the tank pressure exceed an early warning line, and the system safety is greatly improved.

The invention provides a high-reliability arcing protection design C-GIS switch cabinet, and relates to the technical field of switch cabinets, the high-reliability arcing protection design C-GIS switch cabinet comprises a cabinet body frame, a mechanism operation chamber is arranged at the upper end of the front side of the inner wall of the cabinet body frame, a low-voltage chamber is arranged at the lower end of the front side of the cabinet body frame, and a core gas box is arranged at the upper end of the middle in the cabinet body frame; a circuit breaker chamber is arranged at the middle end in the cabinet body frame; the independent circuit breaker pressure relief channel is arranged between the cable chamber and the low-voltage chamber, a bidirectional pressure buffering mechanism is formed by matching with the one-way explosion venting plate, rapid directional pressure relief can be achieved when the circuit breaker chamber breaks down, door body impact can be relieved through cross-chamber pressure relief when the cable chamber arches, and an overflow path of arcing gas is effectively blocked; the front, middle and rear three-section type compartment layout strictly separates a pressure relief channel from a functional chamber, and cooperates with an independent upper gas tank pressure relief channel, so that the arcing influence range is greatly reduced, and the cascading failure risk is reduced from the spatial isolation level.

The invention discloses a low-temperature liquid storage tank pressure prediction method based on a non-thermal equilibrium state model, and aims to improve the calculation speed of a pressure evolution law so as to reduce the time required for predicting the pressure of a storage tank. The method comprises the steps that firstly, a pressure sensor, a temperature sensor and a liquid level meter are used for collecting the temperature of a current gas phase and liquid phase area of the low-temperature liquid storage tank, the pressure in the storage tank, the vacuum degree of a heat insulation layer and the real-time liquid level; secondly, transmitting signal data obtained by monitoring of the sensor to a processor, and checking the density, phase change latent heat and thermodynamic energy of gas and liquid phases in the storage tank through REFPROP software; then establishing a three-dimensional model and a heat and mass transfer relationship of the storage tank, and performing heat transfer analysis on gas-phase and liquid-phase media in the storage tank; secondly, performing energy analysis on a gas phase region, a liquid phase region and a gas-liquid interface in the storage tank according to the established three-dimensional model and a heat transfer analysis result, and selecting a proper time step to perform iterative calculation so as to ensure the calculation precision of each step; storing the calculation result of the previous step, and searching and taking thermodynamic parameters of the next time step through REFPROP software according to the parameters obtained through calculation; finally, the safe storage time of the storage tank under the current liquid filling volume and the heat insulation performance is calculated, and safe work of the storage tank is guaranteed.

The invention discloses a fuel tank pressure sensor, and belongs to the technical field of automobile sensors, the fuel tank pressure sensor comprises a shell, a shell cover, a PCBA circuit unit and a ventilation unit, a monitoring channel is arranged in the shell, two sides of the monitoring channel are provided with communication connectors, the front end of the shell is provided with a wiring harness connector, the PCBA circuit unit is fixed in the shell, and the ventilation unit is fixed in the shell. The shell cover covers the outer shell, the ventilation unit is arranged on the shell cover, the PCBA circuit unit comprises a ceramic substrate and a circuit substrate with an electrical device, a detection hole communicated with a monitoring channel is formed in the outer shell, the ceramic substrate is bonded in the outer shell through a sealant, and the ventilation unit is arranged on the outer shell. The ceramic substrate is provided with a through hole corresponding to the detection hole, the circuit substrate is bonded above the ceramic substrate, and a monitoring chip is packaged in the circuit substrate. The device is high in reliability and low in manufacturing cost, and improves the accuracy and long-term stability of oil tank pressure detection.

The invention belongs to the technical field of aircraft fuel oil systems, and particularly relates to a nitrogen-rich gas flow distribution device for aircraft fuel oil tank inerting. The air separation device is used for generating nitrogen-rich gas; a flute-shaped pipe, an oil tank pressure sensor and an oil tank oil quantity sensor are arranged in the oil tank; one end of the inerting pipeline is connected with the air separation device, the other end of the inerting pipeline penetrates through the oil tank to be connected with the flute-shaped pipe, and the inerting pipeline is sequentially provided with a one-way valve, a flow adjusting ball valve, an oxygen concentration sensor and a flow sensor from upstream to downstream. The upper computer is used for collecting a wheel load signal; the controller is used for judging the current flight stage of the aircraft according to the pressure of the fuel tank and the wheel load signal, and controlling the opening degree of the flow adjusting ball valve according to the current flight stage of the aircraft, the pressure of the fuel tank and the fuel quantity of the fuel tank, so that the fuel tank is filled with the nitrogen-rich gas with the corresponding flow. According to the invention, monitoring of various parameters can be realized, and the flow of nitrogen-rich gas entering the oil tank can be timely adjusted.

The present disclosure relates to a method and device for optimizing navigation of a ship. The method according to an embodiment of the present disclosure may generate recommended navigation information about a navigation route of a ship, based on navigation plan information associated with a departure location and an arrival location of the ship, predict a boil-off gas (BOG) generation amount of the ship and a tank pressure value of the ship, based on the recommended navigation information, and obtain optimal navigation information associated with operation control of the ship, based on the BOG generation amount and the tank pressure value.

The application belongs to the technical field of shield construction, and discloses a method and system for early warning of settlement trend of shield construction crossing a dam; the method comprises the following steps: collecting silt layer geological data before the shield crosses the dam, and analyzing to obtain the distribution range and sensitivity level of the silt layer; collecting the tunneling parameters in real time in units of each ring when the shield machine crosses the silt layer section, and analyzing to obtain the disturbance index; collecting the real-time tunneling speed and the cutter head rotating speed, and recording the shutdown parameters when the complete shutdown condition is met; collecting the slurry tank pressure and the shutdown duration during shutdown, and calculating the pressure data; for the current sensitivity level, the preset hierarchical early warning rule is adopted, the current disturbance index basic threshold is corrected to obtain the corresponding dynamic threshold, the pressure data is compared with the dynamic threshold, and the early warning is issued according to the preset trigger logic classification; and the application improves the safety of shield construction crossing the dam.

The embodiment of the utility model discloses an electronic parking brake module test system. The system comprises a gas supply module, a gas tank, a first gas pressure sensor, a second gas pressure sensor, a control panel and an electronic parking brake module, the control panel is used for generating and sending a test instruction and target opening information based on the test trigger operation; the gas supply module is used for providing high-pressure gas for the electronic parking brake module in response to the test instruction; the electronic parking braking module is used for controlling the electronic parking braking module to adjust the opening degree in response to the target opening degree information; the first air pressure sensor is used for collecting and sending a current air inlet pressure value to the control panel; the second air pressure sensor is used for collecting and sending a current air tank pressure value to the control panel; and the control panel is also used for determining a target test result based on the current air inlet pressure value, the current air tank pressure value, a pre-stored target air inlet pressure value and a pre-stored target air tank pressure value, so that the dynamic test of the electronic parking brake module is automatically carried out, and the test efficiency is improved.