10results about How to "Improve economic indicators" patented technology

A high-performance protective agent for preventing slag adhesion of a steel slag container and applied to seamless steel tube smelting relates to the technical field of protective agents, and comprises the following chemical components: magnesium (Mg), silicon (Si), calcium (Ca), carbon (C) and unavoidable impurities. The chemical components comprise 28 to 30 weight percent of magnesium (Mg), 13 to 15 weight percent of silicon (Si), 7 to 9 weight percent of calcium (Ca), 45 to 50 weight percent of carbon (C) and the balance of inevitable impurities. The high-performance protective agent for preventing slag adhesion of the steel slag container applied to seamless steel pipe smelting has the excellent characteristics of smooth slag overturning and no residue; the refractoriness can reach 1700 DEG C, the anti-sticking property and the adhesiveness are excellent, the dosage is reduced, and the economic index is excellent.

The utility model relates to building technical field discloses a prefabricated pipe pile stand column steel support joint, including prefabricated pipe pile stand column, the pile head is arranged at the top of prefabricated pipe pile stand column, the microexpansion concrete filling core is equipped in prefabricated pipe pile stand column, the microexpansion concrete filling core bottom end is fixedly connected circular thin steel plate through anchor bar, the top end fixedly connected with anchor plate of anchor bar, the pile head is equipped with longitudinal reinforcement framework and transverse stirrup, steel support, steel support sets up on anchor plate, and the groove section steel is connected through the welding of the angle weld of steel support side surface and forms. In the utility model, the longitudinal reinforcement framework and transverse stirrup are arranged in the pile head to form the reinforcement net cage, and the microexpansion concrete filling core is adopted to pour to enhance the bending, shearing strength of pile head, and the connecting structure of anchor bar, anchor plate and circular thin steel plate makes steel support load can be evenly transmitted to prefabricated pipe pile stand column through anchor plate, and the reliable bearing capacity and crack resistance of node are ensured.

The application discloses a method for directly injecting liquid sulfur into a fuming furnace for vulcanization and volatilization, which can ensure smooth pipeline transportation of liquid sulfur, which is a vulcanizing agent, and the prepared control of the feeding speed of the liquid sulfur, avoid the technical problems of waste caused by direct combustion of granular sulfur and easy blockage of the pipeline caused by direct injection of the granular sulfur, and realize the full vulcanization-reduction combined reaction by setting the reasonable position of the granular sulfur in the fuming furnace and the pulverized coal burner, so that the best economic index of the liquid sulfur and the pulverized coal can be controlled.

The invention relates to the technical field of reactive compensation of a distribution network, and provides a load regulation and control management method and system, and the method comprises the steps: processing an input signal of each reactive adjustable branch of a load regulation and control management system; calculating the maximum allowable output reactive power of each reactive adjustable branch; calculating the maximum allowable reactive output capacity of the load regulation and control management system accessed to all loads; calculating active power and reactive power, and then calculating apparent power according to the active power and the reactive power; predicting the reactive power of a transformer and the reactive power of a power supply line in the load regulation and control management system according to the apparent power; calculating target total reactive power of sampling points in the load regulation and control management system; and calculating and issuing a reactive power target value of each reactive adjustable branch. The problems of reactive power return, network loss increase and voltage deviation out-of-limit existing in traditional reactive power compensation can be effectively solved, the switching frequency of the capacitor bank is reduced, and the service life of equipment is prolonged.

The invention relates to the technical field of molten iron smelting, in particular to a method for smelting high-silicon and high-manganese molten iron under low iron loss, which comprises the following steps: loading high-silicon and high-manganese molten iron, scrap steel, iron blocks and slag steel into a converter; slag remaining operation is adopted for smelting, the slag remaining amount of an upper furnace is controlled, slag splashing furnace protection is conducted after tapping, the remaining slag serves as a slagging material for blowing of the next furnace, and a gun is lowered for sparking blowing; a solvent is added in the earlier stage of blowing, the solvent comprises lime, unfired dolomite and magnesium balls, the lance position in the earlier stage of blowing is controlled to be 2200 mm, and when the oxygen blowing amount is 4200-4600 m < 3 >, one-time lance lifting operation is carried out; and secondary gun lowering is carried out after primary gun lifting, the gun position is controlled to be 2100 mm, feeding is carried out after slag coming, splashing is pressed, the gun position is lowered, and carbon catching and steel tapping are carried out in the later period of blowing. The blowing process is stable and free of splashing, the final temperature and oxygen control are stable, and meanwhile, under the condition that the heat of the converter is not rich, ordinary steel in a refining route can be smelted through high-silicon high-manganese molten iron chemical heating.

This invention discloses a hydrocyclone pressure adaptive control method based on a soft-sensor model of slurry flow rate and concentration, comprising the following steps: A. Establishing the soft-sensor model and constructing a training dataset: A pressure transmitter, frequency converter, and current sensor are installed on the outlet pipe of the hydrocyclone feed pump; a current sensor is installed on the motor of the feed pump; and a pressure transmitter is installed on the hydrocyclone feed pipeline. Historical datasets are synchronously collected and correlated within an initial period, and manual timed sampling is also performed. This invention achieves indirect and accurate measurement of key parameters: It creatively utilizes the operating data (speed, current, pressure, liquid level) of existing equipment such as pumps and pipelines, and constructs a high-precision soft-sensor model of flow rate and concentration through advanced machine learning algorithms. This model estimates the slurry flow rate and concentration, which are difficult to measure online using traditional instruments, in real time with low cost and high reliability, breaking through the information bottleneck of hydrocyclone optimization control.

The utility model discloses a three-way door type steel pipe pole, which belongs to the field of high-voltage transmission line pole towers and comprises a first main pole, a diagonal bridging is fixedly sleeved outside the first main pole and is formed by crossing two insulating rods, and cylindrical sleeves are mounted at four end points of the diagonal bridging. Every two sleeves form a group and are arranged outside the first main rod and the second main rod in a sleeving mode. The beneficial effects of the utility model are that a three-loop power supply line is formed by separately erecting the three wire cross rods on the first main rod and the second main rod, and the mode of erecting the three-loop line in a tower shape does not affect the operation of the other two-loop lines under the condition that any one-loop line is subjected to power-off maintenance; the situation that two circuits are closed to ensure the maintenance safety of personnel is avoided, and the problem that only one circuit supplies power in the maintenance process has extremely high potential safety hazards is solved.

The application discloses a kind of intelligent well downhole inflow control valve continuous and discrete control net present value optimization method, and specifically relates to oil and gas field development production optimization technical field.The method is by obtaining reservoir geologic model, well pattern and completion segmented information, constructs the ICV control vector of each well each segmented in each control cycle in production life period;With NPV as objective function, according to time step cumulative oil price income and deducts injection medium cost, produced water treatment cost and other expenses, and according to discount rate discount;According to control cycle and segmented structure to generate candidate control vector, input reservoir numerical simulator simulation, obtain oil production rate, water production rate and injection response and calculate NPV;When meeting termination criterion, output optimal ICV control strategy.The method supports bounded variable unconstrained transformation, continuous control time smoothing constraint and discrete gear feasibility and smoothing hard constraint, improves strategy implementability and economic benefit.

This invention relates to a multi-impeller-driven horizontal axis micro-wind generator, mainly comprising a novel multi-impeller-driven power generation device and a protective wind-guiding casing. Impeller groups I and II within a barrel-shaped duct form a wind-gathering drive, resulting in better wind capture and a higher generator power output. The generator rotor rotates in the forward direction while the stator windings rotate in the opposite direction, increasing the generator speed without sacrificing torque or adding a transmission. This significantly improves generator efficiency and effective power generation time under light wind conditions. The ventilation and protective cover prevents the high-speed rotating impeller from injuring birds and insects, making it more environmentally friendly. Under low-elevation installation conditions, the ventilation and protective cover isolates floating foreign objects, preventing damage to the impeller and further improving the service life and economic efficiency of the micro-wind generator. It also more effectively reduces emissions of greenhouse gases such as carbon dioxide, contributing to environmental protection and sustainable development.

The invention relates to a novel multilayer composite traffic steel truss girder bridge and a construction method thereof. The novel multi-layer composite traffic steel truss girder bridge comprises equal-height section truss piece sets, middle fulcrum bracket section truss piece sets, an upper-layer bridge deck system, a lower-layer bridge deck system, equal-height section supporting rods, bracket section supporting rods, bracket section transverse links, track bridge piers, track beams, hanging type stairway beams and hanging type gallery bridges. The equal-height section steel truss girder is a space truss structure system composed of an equal-height section truss piece set, an upper-layer bridge deck system, a lower-layer bridge deck system and equal-height section supporting rods. The equal-height section steel truss girder is connected with a bracket section steel truss girder composed of a middle fulcrum bracket section truss piece set, a bracket section transverse link and a bracket section supporting rod. According to the rail bridge, the rail bridge piers and the rail beams are arranged at the center positions of the upper chord nodes of the main trusses of the truss piece sets at the equal-height sections, the span application range of the steel truss bridge is expanded, the wide prospect of large-scale application is achieved, and sharing of bridge location resources in urban dense areas is promoted.