24 results about "Oil demand" patented technology

The invention discloses a flow demand control method and device for electric engineering machinery, and the method comprises the steps: determining a pilot handle opening value according to a pilot handle opening voltage value; according to the pilot handle opening value and a preset hydraulic oil demand response characteristic value, a hydraulic oil demand flow value is obtained; a main pump pressure value is obtained, the hydraulic oil demand flow value is dynamically corrected according to the main pump pressure value, and a corrected flow value is obtained; and the current of the first proportional valve is adjusted according to the corrected flow value, and the opening value of the first proportional valve is controlled. The flow demand is corrected in real time through the main pump pressure, high-pressure working condition overpower output is avoided, the overflow frequency is reduced, and dynamic pressure correction is achieved.

The invention relates to the technical field of air conditioners, in particular to an air conditioning system and an air conditioner. The air conditioning system comprises a compressor, an oil separator, an oil storage valve, a liquid storage device, a liquid storage device drainage control valve and a liquid inlet valve. An exhaust port of the compressor is communicated with an oil inlet of the oil separator, an oil discharge port of the oil separator is communicated with an air suction port of the compressor and the first end of the oil storage valve, the second end of the oil storage valve is communicated with a liquid inlet of the liquid storage device, and a liquid discharge port of the liquid storage device is communicated with the first end of the liquid storage device liquid discharge control valve. The second end of the liquid storage device drainage control valve is communicated with an air suction port of the compressor, the first end of the liquid inlet valve is communicated with the liquid storage device, and the second end of the liquid inlet valve is communicated with an exhaust port of the oil separator. By means of refined oil return quantity control, it is better guaranteed that the oil return quantity is matched with the compressor lubricating oil demand quantity, the quantity of oil entering the two devices along with refrigerant circulation is reduced, cooperative control over the oil return quantity and the refrigerant quantity is achieved, and the operation energy efficiency of the unit is better improved.

The invention provides a light truck electric drive axle assembly structure with a power takeoff, which fully lubricates a bearing, a gear, a differential mechanism and the power takeoff at the same time, so that the oil demand is less, the total weight of a gearbox is reduced, the lubricating efficiency is higher, and the lubricating position is more comprehensive. The gearbox comprises a gearbox shell and a transmission input and output assembly; the differential mechanism comprises a differential mechanism shell and a differential mechanism transmission assembly; the power takeoff comprises a power takeoff shell and a power takeoff transmission assembly; the differential mechanism is arranged on one side of the gearbox, the power takeoff is arranged on the other side of the gearbox, one side of the gearbox shell is communicated with the differential mechanism shell, the other side of the gearbox shell is communicated with the power takeoff shell, and a main shell oil suction channel and an oil filter are arranged at the bottom of the gearbox shell.

The utility model discloses automatic grease oil cup of filling, including oil cup body, connecting assembly and closed pushing assembly, connecting assembly sets up in the bottom of oil cup body, and closed pushing assembly includes cup cover, and cup cover sets up in the top outside of oil cup body, and the inner chamber of oil cup body and cup cover is provided with movable part, and the top of movable part is provided with the resilience part for pushing movable part and moves, and the connecting place of resilience part and cup cover is provided with the locking part for fixed resilience part, the utility model discloses through setting up closed pushing assembly in the top of oil cup body, utilizes the change of the tightening degree of cup cover and oil cup body in closed pushing assembly, adjusts the force of resilience part fixed locking part in cup cover and pushes movable part, and then carries out automatic extrusion of the grease in oil cup body and discharges, compared with directly relying on manual oiling, can be adjusted according to the tightening amount of cup cover in this design, and the extrusion pressure of resilience part to grease is controlled, thereby realizing the automatic oiling demand of satisfying different equipment.

This invention discloses an intelligent method and apparatus for calculating refined oil demand. The method includes: acquiring collected seasonal and historical demand information for refined oil; performing cluster analysis on the collected information based on a clustering algorithm to obtain data information at different regional category levels; performing feature engineering processing on the data information at each regional category level, and determining the feature importance value of each feature among the seasonal characteristics, trend characteristics, and cross-features of refined oil at the corresponding regional category level based on a decision tree model ensemble learning algorithm; determining the target features for different regional category levels and establishing a second training dataset; training a neural network model to obtain a refined oil demand analysis model; and calculating the refined oil demand data of different merchants at different regional category levels. This invention aims to improve the accuracy and efficiency of refined oil demand calculation.

The application discloses a method, device, computer storage medium and terminal for inventory emergency management. The embodiments of the present disclosure determine product oil production and sales constraints and inventory management constraints by using product oil management related information such as node supply and demand, channel transportation, node inventory and pipeline correlation, couple inventory emergency management and production and sales to a product oil logistics daily scheduling model, consider product oil logistics planning and inventory emergency management requirements, and thus can obtain a refinery delivery execution plan, an oil depot demand execution plan, a product oil logistics plan, a pipeline scheduling plan and a node inventory plan that meet various constraint conditions, effectively improve the utilization rate of product oil demand prediction, guarantee the oil depot inventory level, achieve the economic and practical purposes of the product oil logistics plan, and improve the efficiency of the product oil inventory emergency management.

The utility model belongs to the technical field of laser cutting equipment, and discloses laser cutting equipment with a lubricating oil injection device, which comprises a cutting table and a portal frame arranged on the cutting table, two ends of the portal frame are respectively provided with a sliding table, the sliding tables are arranged on the top of the cutting table in a sliding mode through a transmission assembly, and lubricating pumps are arranged on the sliding tables. The lubricating pump is connected with an oil injection device used for adding lubricating oil to the transmission assembly, the oil injection device comprises a flow divider installed on the sliding table, an oil inlet of the flow divider is communicated with an oil outlet of the lubricating pump through an oil outlet hose, the flow divider is installed on the sliding table through a quick change mechanism, and an oil distribution brush is installed at the bottom of the flow divider. According to the utility model, the quick-release oil injection device is adopted, so that the problem that more parts cannot be lubricated due to strong flowing randomness of lubricating oil is solved, and the requirements of low oil demand, good lubricating effect and convenience in maintenance are met.

The invention discloses a system and method for replacing high-condensation-point oil with cold water for high-condensation-point oilfield development, and the system is characterized in that a replacement main pipeline is additionally arranged on an existing single-pipe mode replacement system, and the liquid inlet end and the liquid outlet end of the replacement main pipeline are respectively communicated with the tail end of a production pipeline and the tail end of a water injection pipeline; a first valve and a second valve are respectively arranged on the replacement main pipeline close to the liquid inlet end and the liquid outlet end; the replacement main pipeline is also provided with a first spherical pig; and a ball passing indicator is arranged on the replacement main pipeline between the first spherical pig and the first valve. Due to the fact that the newly-added diesel oil branch pipe is short in length and small in diesel oil demanded quantity, large-flow diesel oil replacement is not needed, development investment is reduced, replacement preparation time for injecting the diesel oil through the umbilical cable after transportation stopping can be shortened, and safety is further improved.

A hydraulic system, a control method and a rescue apparatus, which aim to solve problems such as difficult flow distribution and slow response in engineering machinery apparatuses. The hydraulic system comprises a hydraulic pump (4), a common rail line (14), a controller (6), at least one actuator mechanism and a reversing valve (9) corresponding to each actuator mechanism, wherein the hydraulic pump (4) is connected to the common rail line (14); the reversing valve (9) is located between the actuator mechanism and the common rail line (14); and the controller (6) is used for determining a target total demand flow rate on the basis of a target speed corresponding to each actuator mechanism, and determining a target common rail pressure on the basis of a load pressure. When it is determined that a target total power determined on the basis of the target common rail pressure does not exceed a limited total power of the hydraulic system, and the sum of oil demand flow rates determined on the basis of the target speeds does not exceed a limited total flow rate of the hydraulic system, for each actuator mechanism, a valve control current of the reversing valve corresponding to the actuator mechanism is determined on the basis of the load pressure of the actuator mechanism, and the valve control current is supplied to the reversing valve.

The invention provides a product oil demand degree prediction method and device based on multi-factor variable deep learning, and the method comprises the steps: carrying out the model construction of a preset multi-factor variable prediction long-short-term memory network according to an obtained historical sales data set, a historical environment data set and a historical price adjustment fluctuation data set of product oil, obtaining a product oil demand degree prediction model and carrying out demand prediction to generate a product oil demand degree of a to-be-predicted date; the multi-factor variable prediction long-short-term memory network comprises a first long-short-term memory network based on an adaptive attention mechanism, a second long-short-term memory network based on an enhanced information gating mechanism, a first full-connection layer and a second full-connection layer, so that the inherent rule of demand degree fluctuation can be captured more comprehensively; the complex time sequence mode is accurately and efficiently captured, and the data utilization rate, the demand degree prediction precision, the system computing power and the automation degree are improved, so that the prediction efficiency and precision are improved, and the system cost is saved.

The invention discloses a product oil demand sensitivity prediction method and device. The method comprises the following steps: acquiring statistical data of product oil; wherein the statistical data comprises historical product oil sales volume data and historical product oil price change parameters; carrying out quantity-price relation modeling on the historical product oil sales volume data and the historical product oil price change parameters to obtain a product oil sales volume prediction model; determining the demand sensitivity of the product oil through the product oil sales prediction model; according to the method, statistical data in a plurality of oil price adjustment periods are fully utilized, and the difference of gasoline and diesel oil in market response characteristics is combined to construct adaptive sales prediction models, so that the sales change trend of different product oil types under different price adjustment amplitudes can be accurately reflected, and the sales prediction accuracy is improved. The subjectivity and the uncertainty brought by a traditional artificial experience judgment or static average estimation method are effectively overcome, and the precision and the practicability of demand sensitivity analysis are remarkably improved.

The embodiment of the present application provides a pump displacement ratio correction method and device, which are used for solving the problems of engine speed drop and fuel consumption caused by sudden increase of engine load. The method comprises the following steps: at the initial moment of the current scheduling period, determining the original pump displacement of the main pump in the current scheduling period according to the oil demand flow and the engine speed; when a set condition is met, adjusting the filtering time of the output pump displacement according to the main pump pressure of the current scheduling period; wherein the set condition is that the original pump displacement is greater than the output pump displacement of the main pump in the last scheduling period, and the engine power of the last scheduling period is greater than a set threshold; and determining the output pump displacement ratio of the main pump in the current scheduling period according to the adjusted filtering time and the original pump displacement.

The invention discloses an inventory emergency management method and device, a computer storage medium and a terminal.According to the embodiment of the invention, product oil production and marketing constraints and inventory management constraints are determined through product oil management related information such as node supply and demand, channel transportation, node inventory and pipeline correlation; stock emergency management and production and marketing are coupled into a product oil logistics daytime scheduling model, and product oil logistics plans and stock emergency management requirements are considered at the same time, so that a refinery delivery execution plan, an oil depot goods requiring execution plan, an oil product logistics plan, a pipeline scheduling plan and a node stock plan which meet various constraint conditions can be obtained; the utilization rate of oil demand prediction is effectively improved, the oil depot inventory level is guaranteed, the purposes of economy and practicability of the product oil logistics plan are achieved, and the product oil inventory emergency management efficiency is improved.

The invention belongs to the technical field of lubricating oil preparation, and particularly relates to a special zinc-free hydraulic oil composition for wind power as well as a preparation method and application thereof. The composition is prepared from the following components in percentage by mass: 0.01 to 0.03 percent of a dispersing agent, 10 to 20 percent of a viscosity index improver, 0.2 to 0.4 percent of an anti-wear agent, 0.05 to 0.1 percent of an extreme pressure agent, 0.02 to 0.05 percent of a metal deactivator, 0.1 to 0.3 percent of an antioxidant, 0.05 to 0.1 percent of an anti-rust agent, 0.01 to 0.04 percent of a clearing agent, 0.01 to 0.05 percent of an anti-foaming agent, 0.01 to 0.05 percent of a demulsifying agent and the balance of IV type base oil. The special zinc-free hydraulic oil for wind power, which meets the oil demand of a wind generating set and has an ultrahigh viscosity index, is prepared, and the product has excellent low-temperature fluidity, viscosity-temperature property, oxidation stability and long oil change period.

This control system for a work machine comprises: a turning body; a pump that discharges hydraulic oil; a turning motor that is supplied with the hydraulic oil from the pump and turns the turning body; a turning sensor that detects the turning speed of the turning body; and a controller. The controller: calculates a consumption flow rate indicating a flow rate of the hydraulic oil passing through the turning motor on the basis of detection data from the turning sensor; calculates, on the basis of the consumption flow rate, a first turning motor demand flow rate indicating a flow rate of hydraulic oil demanded by the turning motor to maintain an acceleration state when the turning speed of the turning body is in the acceleration state; and controls, on the basis of the first turning motor demand flow rate, a pump flow rate indicating the flow rate of the hydraulic oil discharged from the pump.

The utility model relates to the technical field of air conditioners, in particular to an air conditioning system and an air conditioner. The air conditioning system comprises a compressor, an oil separator, an oil storage valve, a liquid storage device, a liquid storage device drainage control valve and a liquid inlet valve. An exhaust port of the compressor is communicated with an oil inlet of the oil separator, an oil discharge port of the oil separator is communicated with an air suction port of the compressor and the first end of the oil storage valve, the second end of the oil storage valve is communicated with a liquid inlet of the liquid storage device, and a liquid discharge port of the liquid storage device is communicated with the first end of the liquid storage device liquid discharge control valve. The second end of the liquid storage device drainage control valve is communicated with an air suction port of the compressor, the first end of the liquid inlet valve is communicated with the liquid storage device, and the second end of the liquid inlet valve is communicated with an exhaust port of the oil separator. By means of refined oil return quantity control, it is better guaranteed that the oil return quantity is matched with the compressor lubricating oil demand quantity, the quantity of oil entering the two devices along with refrigerant circulation is reduced, cooperative control over the oil return quantity and the refrigerant quantity is achieved, and the operation energy efficiency of the unit is better improved.

The present application relates to a kind of lubricating pump and double line centralized lubricating system.It includes bucket cover, driving device, pumping mechanism, reversing valve mechanism and guide slide sleeve, the outer periphery of bucket cover has the connecting structure that can be detachably connected with lubricating grease bucket, by replacing lubricating grease bucket by detaching, connecting structure, the upper end of guide slide sleeve is connected with bucket cover, for as the guide piece of pumping mechanism relative to the movement of bucket cover, to limit its along the central axis direction of lubricating grease bucket movement.Reversing valve mechanism includes reversing valve and reversing module, pumping mechanism includes pump seat and the plunger pair assembly that is arranged on pump seat and is driven by driving device, annular sealing element for being used for the sliding sealing cooperation with the inner wall of lubricating grease bucket is further provided on pump seat, driving device is fixed relative to pump seat, has when the oil of centralized lubricating system grease is finished and needs to be replenished Operation is convenient and quick, and it is not easy to enter sundries, for the large-scale engineering machinery of the oil demand, can reduce the advantages such as artificial grease frequency.

The present invention relates to a dual-line centralized lubrication system. It includes a dual-line lubrication pump or a dual-plunger lubrication pump, a main oil circuit, a dual-line distributor and a progressive distributor. The dual-line distributor is connected to two main oil circuits, and the progressive distributor is also connected to the main oil circuit. During operation, the amount of grease output by the progressive distributor is determined by the operating time set by the controller. The system has a simple structure, the distributor size is easy to standardize and is relatively small, it can be applied to the lubrication of lubrication points with different oil requirements without replacing the distributor, it is convenient to increase or decrease the number of lubrication points, it has strong expandability, it is convenient to perform fault detection, it is convenient to set an adaptive lubrication mode according to the different working modes of the equipment, and each lubrication point can be zoned and controlled. When the oil demand of the lubrication points in each area changes and the grease supply is adjusted, there is no interference with each other. The working time of the progressive distributors connected on the two main oil circuits can be different to achieve different displacement requirements, and the amount of lubricating oil can be dynamically adjusted when the working conditions change.

The application discloses a flow demand control method and equipment for an electric engineering machine, and the method comprises the following steps: determining a pilot handle opening value according to a pilot handle opening voltage value; obtaining a hydraulic oil demand flow value according to the pilot handle opening value and a preset hydraulic oil demand response characteristic value; acquiring a main pump pressure value, and dynamically correcting the hydraulic oil demand flow value according to the main pump pressure value to obtain a corrected flow value; and adjusting the current of a first proportional valve according to the corrected flow value to control the opening value of the first proportional valve. The flow demand is corrected in real time by the main pump pressure, high-pressure working conditions are prevented from over-power output, the overflow frequency is reduced, and dynamic pressure correction is realized.

The invention discloses a multi-level and multi-view-oriented oil prediction method for an equipment combat unit, and particularly relates to the technical field of system engineering, and the method comprises the steps: constructing a multi-level and multi-view-oriented combat unit guarantee system model; structured and visual modes are adopted, combat actions and guarantee tasks are decomposed layer by layer, and parameters such as the type and number of equipment of each layer of a combat unit, the fuel consumption standard and combat duration of each type of equipment, the fuel consumption correction coefficient and the like are used as input; calculating the oil consumption of each type of equipment in each mission profile in each combat stage of combat compilation, namely the oil quantity required for completing one combat mission; based on the fuel consumption under the mission profile of each combat stage of the combat troop, the remaining amount of fuel under the mission profile of the combat stage is calculated according to the volumes of different types of equipment fuel tanks, and the fuel supply amount is predicted according to the refueling proportion; and based on the oil consumption under the mission profile of each combat stage of combat compilation, predicting the oil demand required to be supported by the equipment combat unit.

The invention belongs to the technical field of lubricating oil preparation, and particularly relates to a special zinc-containing hydraulic oil composition for wind power as well as a preparation method and application thereof. The composition comprises the following components in percentage by mass: 0.01-0.03% of a dispersing agent, 5-10% of a viscosity index improver, 0.2-0.4% of an anti-wear agent, 0.05-0.1% of an extreme pressure agent, 0.02-0.05% of a metal deactivator, 0.1-0.3% of an antioxidant, 0.05-0.1% of an anti-rust agent, 0.01-0.04% of a clearing agent, 0.01-0.05% of an anti-foaming agent, 0.01-0.05% of a demulsifying agent and the balance of base oil, and the chemical structural formula of the dispersing agent is as shown in formula (1). The high-viscosity-index zinc-containing hydraulic oil special for wind power, which meets the oil demand of a wind generating set, is prepared, and the product has excellent low-temperature fluidity, viscosity-temperature property, oxidation stability and long oil change period.

The utility model relates to the technical field of automobile oil pump cover production, in particular to a surface anti-corrosion oil coating device for an automobile oil pump cover casting, which is reasonable in structural design, all parts are coordinated and matched, and the automobile oil pump cover casting is placed by using a loading tray. The oil coating assembly is used for carrying out anti-corrosion oil coating operation on the surface of the pump cover of the automobile oil pump, and redundant oil liquid in the oil coating process is collected through the oil receiving box; the splash-proof combined baffle ring can prevent oil from splashing, and meanwhile, the stability of the material loading disc is improved; besides, a self-lifting oil coating head is arranged in the oil coating assembly, the self-lifting oil coating head can be lifted in a self-adaptive mode according to the outer surface modeling of the automobile oil pump cover casting, and the requirement for anti-corrosion oil coating of the outer surfaces of the automobile oil pump cover castings of different modeling is met.

The application discloses a coal mine underground narrow-body rubber-tyre drilling machine, a double-hung suspension liquid path system and a method, wherein an electromagnetic starter and an explosion-proof controller are sequentially arranged on the right side of a whole frame, a main machine is arranged on the rear middle part of the whole frame, and the stability of the whole machine during walking and drilling of the drilling machine is ensured; an operating platform is fixedly connected to the left side of the whole frame and is used for realizing the operation control of the upper-mounted drilling machine; a motor pump group is vertically arranged on the whole frame, axial layout space of the upper-mounted drilling machine is saved, and full use of longitudinal space is realized; an oil tank is arranged on the rear part of a cab and is transversely arranged on the upper part of the whole frame, and mainly meets the hydraulic oil demand of the narrow-body rubber-tyre vehicle and the upper-mounted drilling machine; and the above arrangement can better solve the compatible design of the large bearing capacity of the rubber-tyre vehicle and the narrow-body structure, and realize the rapid relocation of the drilling machine.

The invention relates to the technical field of special oil for electric drive systems, and particularly discloses special oil for an electric drive system and a preparation method of the special oil. The invention discloses special oil for an electric drive system. The special oil comprises the following components in parts by weight: 90-95 parts of base oil, 2.76-5.2 parts of an antioxidant, 0.36-1.0 part of phosphorous acid and derivatives thereof, 0.36-0.72 part of a metal protective agent and 3-5 parts of a pour point depressant, the antioxidant is formed by mixing nonyl-N-(nonylphenyl) aniline, a phenolic antioxidant and a 2, 2 '-imino diethanol-N-tallow alkyl derivative; and the metal protective agent is formed by mixing 3-(isodecyloxy)-1-propylamine and 4 (or 5)-methyl 1H-benzotriazole. The special oil for the electric drive system provided by the invention has excellent electrical insulating property and material compatibility on the premise of ensuring good low-temperature fluidity, high-temperature thermal stability, oxidation resistance and thermal conductivity, and can meet the oil demand of the leading-edge electric drive system.