15results about How to "Efficient injection" patented technology

The application provides a downhole supercritical carbon dioxide fracturing coal rock device and a construction method, which comprises a coal seam, a fracturing borehole, a hole blocking section, a hole sealing section, a fracturing section, a monitoring hole, a fracturing system, a temperature control system, a grouting system, a liquid carbon dioxide pressurizing system, a proppant mixing system, an extraction system and a data collector; the fracturing borehole is arranged on the coal seam and comprises the hole blocking section, the hole sealing section and the fracturing section; a plurality of monitoring holes are arranged on the coal seam and are spaced apart in the circumferential direction of the fracturing borehole; and the fracturing system is connected with the temperature control system. The proppant mixing system can improve the performance of the liquid carbon dioxide carrying proppant mixture, so that the proppant mixture effectively enters the fracturing fracture and maintains good flow conductivity. The temperature control system overcomes the difficulty in preparation of downhole supercritical carbon dioxide and can realize injection of carbon dioxide in a supercritical state into the fracturing coal seam.

The application discloses a heterogeneous solution ground volumetric distribution stepless adjusting device and a use method, and the device comprises a reciprocating mechanism and a hydraulic reversing mechanism; the hydraulic reversing mechanism comprises a sleeve base and a reversing shaft base, a hydraulic unit is arranged in the sleeve base, a reversing unit is arranged in the reversing shaft base, the hydraulic unit and the reversing unit are connected through an intermittent mechanism, and the reversing shaft base is communicated with the sleeve base; the reciprocating mechanism is connected with the reversing unit, and the reciprocating mechanism leads out an output shaft and is used for connecting a damping device. The volumetric structure is adopted to suck and discharge the heterogeneous solution, the shearing of polymer molecules and particles in the injection liquid in the heterogeneous solution injection process is reduced, the viscosity of the heterogeneous solution is ensured, and low-shearing injection is realized.

The application relates to the fire-fighting monitoring technical field and discloses a fire extinguishing device arranged on a slide rail network in a site, which comprises a fire source signal detecting module, a calculation processing module and a fire extinguishing spraying module. The fire source signal detecting module is used for detecting the fire source signal in the site. The calculation processing module is electrically connected with the fire source signal detecting module, and the calculation processing module is used for receiving the fire source signal. The fire extinguishing spraying module is arranged on the slide rail network in a sliding mode, the fire extinguishing spraying module carries multiple fire extinguishing mediums with different densities and can spray the fire extinguishing mediums to the fire source. The fire extinguishing spraying module is electrically connected with the calculation processing module, the calculation processing module sends a control signal to the fire extinguishing spraying module according to the fire source signal, and the fire extinguishing spraying module adjusts the position thereof according to the control signal and sprays the fire extinguishing medium with the corresponding density. The fire extinguishing device can efficiently switch the fire extinguishing mediums with different densities and adjust the spraying angle of the fire extinguishing medium according to the different fire extinguishing mediums.

This invention discloses a gas-saving mechanism for a welding robot, relating to the field of welding technology. It includes a gas-saving housing with a gas-saving valve fixedly connected inside. An electromagnetic device is mounted on the outside of the gas-saving valve, and the interior of the gas-saving valve is connected to the interior of the electromagnetic device. A magnetic rod is mounted at the connection point between the electromagnetic device and the gas-saving valve. A spring is fixedly connected inside the gas-saving valve, and a sealing plate is fixedly connected to the end of the spring away from the connection with the gas-saving valve. Through the instantaneous release of the elastic potential energy of the spring, an impact block instantaneously impacts a limiting rod. The impact on the limiting rod is transmitted to the impact rod, and this impact force is then transmitted to the sealing plate. The instantaneous impact loosens the sealing plate, preventing accidental jamming that could prevent effective opening and closing. This ensures the accuracy of gas emission and avoids situations such as insufficient gas leading to high temperatures at the welding position during welding, thus improving welding efficiency.

An organic electroluminescence device comprises an anode, a cathode and an organic layer formed between the anode and the cathode, the organic layer comprising a hole injection layer, a hole transport region, an electron blocking layer, a light emitting region, an electron transport region; the hole transport region comprises a first material and a second material, the first material and the second material are sequentially evaporated to form two layers of hole transport layer, the first material is selected from the compound shown in formula 1; the second material is selected from the compound shown in formula 2. The first material with high refractive index is arranged as the first hole transport layer, the second material with low refractive index is arranged as the second hole transport layer, and the structure of the first material and the second material is limited respectively, through the comprehensive regulation of the material structure, the energy level and the refractive index of the double-layer hole transport layer, the limitations of single material or simple mixed material in the hole transport and the light emitting efficiency are overcome.

The invention relates to the field of offshore platform fire fighting, in particular to a fire extinguishing control system and method for a turbofan cannon. Comprising a controller used for analyzing field data and displaying images; the detection module is used for sensing the temperature, the image and the distance of a field fire, and the detection module is connected with the controller; the processing module is used for receiving the data from the detection module, analyzing and processing the data and then generating a driving instruction for the turbofan gun to aim at the fire, and the processing module is connected with the controller; when an offshore platform has a fire, the system can analyze flame characteristics of a fire area at the first time, filter interference of factors such as environment and wind power, position and aim at the fire center area, command a turbofan cannon to jet, adjust a fire extinguishing system in real time according to flow parameters of the turbofan cannon and flame motion characteristics, and improve the fire extinguishing efficiency of the offshore platform. Accurate fire recognition, accurate aiming, effective spraying and fire suppression can be achieved, the fire extinguishing precision is improved, and the fire extinguishing efficiency can be further improved.

The application discloses a perovskite solar cell electron transport layer and a preparation method and application thereof, and relates to the technical field of solar cell preparation. The method comprises the following steps: adding O-phospho-L-threonine into a SnO2 colloidal aqueous solution, and performing ultrasonic treatment to obtain a PT-doped SnO2 solution; and coating the PT-doped SnO2 solution onto the surface of a substrate to form a perovskite solar cell electron transport layer. The unique molecular structure of O-phospho-L-threonine (PT) is utilized to realize a multiple synergistic modification effect, and the device performance is improved. The preparation process is simple. The application solves the problems of the existing perovskite solar cell, such as many defects of the electron transport layer, poor interface energy level matching, serious charge recombination and poor device stability.

The invention discloses a gallium nitride device and a preparation method thereof, and relates to the technical field of semiconductor devices. The gallium nitride device comprises a sapphire substrate, an AlN nucleating layer, an N-type AlGaN buffer layer, an intrinsic AlGaN active layer, an electron blocking layer and a P-type AlGaN layer which are sequentially stacked from bottom to top, a gradient doping edge stop layer is arranged on the edge of the P-type AlGaN layer, and meanwhile a bottom electrode in ohmic contact with the N-type AlGaN buffer layer and a top electrode in ohmic contact with the P-type AlGaN layer are formed respectively. According to the invention, by optimizing the structural design of the substrate, the nucleating layer, the buffer layer, the active layer, the electron blocking layer, the edge termination layer and the electrode, and combining with the seagull optimization algorithm to accurately regulate and control the preparation process parameters, the comprehensive improvement of the light extraction efficiency, the carrier recombination efficiency, the breakdown voltage and the long-term working stability is realized; and the photoelectric property and the reliability of the gallium nitride device are obviously enhanced.

This invention discloses an organic electroluminescent device and display device. The organic electroluminescent device includes an anode, a cathode, and at least one light-emitting layer formed between the anode and the cathode. A hole injection layer and a hole transport region are provided between the anode and the light-emitting layer closest to the anode. The hole transport region includes a first hole transport layer and a second hole transport layer with different refractive indices. The first hole transport layer is selected from compounds of Formula 1 or Formula 3, and the second hole transport layer is selected from compounds of Formula 2. This invention's organic electroluminescent device, through improvements in film structure and material matching, ensures both material stability and carrier transport, while simultaneously improving the light field distribution through optimized optical microcavity structure, thus achieving performance enhancement. [Formula 1] [Formula 2] [Formula 3]

The application belongs to the technical field of aero-engines, and discloses an aero-engine combustion chamber main combustion stage fuel nozzle and a fuel control method. The aero-engine combustion chamber main combustion stage fuel nozzle comprises a same center axis, a duty class fuel nozzle, a swirler and a main combustion stage fuel nozzle which are sequentially sleeved from inside to outside, and the outlet of the main combustion stage fuel nozzle is sleeved with a sleeve. The fuel control method ensures that the fuel jet flow of the duty class fuel nozzle is unchanged, the swirler rotates around the duty class fuel nozzle, the fuel jet flow of the main combustion stage fuel nozzle is adjusted, and then the total fuel jet flow of the aero-engine combustion chamber main combustion stage fuel nozzle is changed. The fuel control method of the aero-engine combustion chamber main combustion stage fuel nozzle realizes efficient fuel injection under different working conditions, guarantees the combustion efficiency and stability of the combustion chamber, controls the combustion temperature distribution of the main combustion zone, and reduces the pollutant emission of the combustion chamber.

The application relates to an ultra-low-power nanometer floating gate 3D NAND structure, which comprises a substrate, a stack structure arranged on the substrate, the stack structure comprising a plurality of first insulating medium layers and nanometer floating gate storage structures which are alternately stacked, a plurality of through holes penetrating through the stack structure, a tunneling medium layer and a center channel layer being sequentially arranged on the sidewall of each through hole, and a center insulating medium layer being filled in the center channel layer; the nanometer floating gate storage structure is vertically arranged with the tunneling medium layer of the sidewall of the through hole, a second insulating medium layer and a blocking medium layer are sequentially arranged in the direction from the tunneling medium layer to the outside of the through hole, a gate word line metal is embedded on the outside of the blocking medium layer, and a nanometer floating gate layer is arranged below the second insulating medium layer and part of the blocking medium layer. The structure can effectively inhibit charge coupling interference and reduce working voltage and power consumption while further reducing the word line spacing to realize high-density size miniaturization.

The invention discloses a composite photocatalytic material with excess sludge as a carrier and a preparation method and application thereof.Porous conductive carbon obtained after carbonization and acid pickling of the excess sludge serves as a framework of the material, a core-shell structure unit composed of a CdS nanometer core and a C3N5 shell layer grows on the surface of the framework in situ, and an S-schema heterojunction is formed. The preparation method mainly comprises three steps of carbonization and purification of sludge, hydrothermal in-situ growth of CdS and vapor deposition wrapping of a C3N5 shell layer. The material fully utilizes the charge separation advantage of a conductive network and heterojunction of sludge carbon, shows excellent hydrogen evolution activity and stability under visible light, realizes high-value utilization of excess sludge, and provides a new material for efficient and low-cost photocatalytic hydrogen production.

The utility model provides an anti-coking device for a settler, which belongs to the technical field of settler plates and comprises an overflow hopper arranged at the lower part of a coarse spinning dipleg and positioned at the inner bottom of the settler; an upper overflow opening is formed in the top end of the overflow hopper, a lower overflow opening is formed in the bottom end of the overflow hopper, and the lower portion of the rough spinning leg extends into the overflow hopper through the upper overflow opening; a superheated steam fluidization ring pipe is arranged at the inner bottom of the overflow hopper, and a nozzle is arranged on the superheated steam fluidization ring pipe; the superheated steam fluidization loop pipe is connected with a steam pipeline, one end of the steam pipeline is connected with the superheated steam fluidization loop pipe, and the other end of the steam pipeline penetrates through the overflow hopper and then is connected with a fluidization steam inlet formed in the upper portion of the settler. Through the measures of reasonable structural design, accurate flow control, wear resistance, condensation prevention and the like, oil gas entrainment can be effectively reduced, catalyst accumulation and coking are prevented, the separation efficiency is improved, the structural strength is high, maintenance is convenient and fast, and the operation cost is reduced.

The invention provides a gas blasting device and a construction method.The gas blasting device comprises a liquid gas storage tank, a control system, a liquid injection machine and a fracturing pipe, the liquid gas storage tank is of a double-layer structure, and a liquid outlet is formed in the lower end of the liquid gas storage tank and connected with a liquid conveying pipe; the other end of the liquid conveying pipe is connected to a liquid injection machine, and the liquid injection machine is used for pressurizing the conveyed liquid gas, conveying the pressurized liquid gas into the fracturing pipe and injecting expansion cracking liquid into the fracturing pipe; the fracturing pipe is of a double-layer structure, a plurality of guide mechanisms are further arranged on the fracturing pipe, and the guide mechanisms are arranged at preset expansion cracking positions so as to guide the expansion direction of cracks; and the control system is used for controlling the actions of the liquid gas storage tank, the liquid injection machine and the fracturing pipe, so that the liquid gas is conducted in sequence for blasting. The novel requirements for higher safety, lower blasting vibration speed, lower carbon emission and intelligent control can be met.

This invention discloses a joint estimation method for power system state and parameters based on Newton-Raphson guided machine learning, relating to the fields of smart grid optimization and power system analysis. The method includes: addressing the problems of low iteration efficiency and machine learning physical mapping distortion in traditional state estimation and parameter identification, embedding the fixed-step Newton-Raphson method as a differentiable module into the machine learning training framework to construct an end-to-end model for parameter and state co-optimization; establishing a PV / PQ node hybrid input-output mapping mechanism that conforms to actual measurement scenarios, using the admittance matrix as an optimizable parameter, and achieving gradient backpropagation under physical constraints through automatic differentiation; designing a node-level state estimation loss function, combined with physical regularization methods for conductance / susceptance, to ensure the feasibility and stability of parameter estimation; and balancing computational efficiency and accuracy by dynamically adjusting the number of Newton iteration steps, ultimately achieving high-precision state prediction and grid parameter reconstruction. Verified on the IEEE-118 node system, this method converges within three Newton iterations, with a state estimation error below 1.2e⁻³, an admittance reconstruction error reduced by 41% compared to the baseline, and strong generalization ability under multiple operating conditions. This invention can be applied to the construction of digital twins for power grids, online security assessment, and fault diagnosis, significantly improving the efficiency and accuracy of power system analysis.