19results about How to "Mature technology" patented technology

The present disclosure relates to a method and system for producing olefins by cracking heavy hydrocarbons, which comprises the following steps: S1, entering a gas-liquid separator for gas-liquid separation to obtain a first gas phase material and a first liquid phase material; and in the process of separation, introducing a separation aid into the gas-liquid separator to contact with the first gas phase material in countercurrent, so that the heavy components carried in the gas phase material are washed or condensed to obtain a second gas phase material; S2, making the second gas phase material enter the radiant section of a steam cracking furnace for cracking to obtain a cracking product containing olefins. The above technical solution can realize the production of olefins to a greater extent by a shorter process and smaller energy consumption.

The utility model discloses a kind of channel trace source erosion protection structures, it is divided into several groups of protection structures from top to bottom distribution in channel, each group of protection structures further include the pile dam support structure being arranged in channel upstream, the auxiliary dam structure of setting channel downstream of pile dam support structure, trapezoidal stilling basin connecting pile dam support structure and auxiliary dam structure, the pile dam support structure further include anti-slide pile, continuous wall, baffle, the anti-slide pile is more than two and is arranged in channel, the continuous wall is connected adjacent anti-slide pile from the channel's gully bed bottom, the baffle is arranged in anti-slide pile front side and located above continuous wall. The utility model is in combination with the common function of pile dam and auxiliary dam and develops a kind of gully trace source erosion protection blocking structure, solves the prevention and cure difficult problem of geological disaster that gully trace source erosion effect occurs.

A low-NOx ammonia-coal stable combustion swirl burner relates to the field of clean combustion of coal with low carbon and low NOx. This invention addresses the problems of ammonia slip and high NOx emissions in existing ammonia-coal co-combustion technologies. In this invention, a primary air / pulverized coal duct is fitted onto a central NH3 duct, forming a primary air channel between them. An outer NH3 duct is fitted onto the primary air / pulverized coal duct, forming an NH3 channel between them. An inner secondary air duct is fitted onto the outer NH3 duct, forming an inner secondary air channel between them. An outer secondary air duct is fitted onto the inner secondary air duct, forming an outer secondary air channel between them. Tangential and axial blades are respectively installed in the inner and outer secondary air channels. This invention is used for pulverized coal swirl combustion.

This invention discloses a method for encoding structured light patterns, a structured light projection module, and a three-dimensional measurement system, belonging to the field of optical measurement. Addressing the problem of fixed and inaccurate structured light encoding units in existing methods, this invention provides a method for encoding structured light patterns. The method divides the structured light pattern into multiple types of grid units, forming a grid encoding group with a predetermined number of consecutively arranged grid units. The grid encoding group is encoded based on the type of each grid unit, ensuring that each grid encoding group has a unique and non-repeating code. The code of the grid encoding group maps to its spatial position within the structured light pattern. Decoding includes acquiring the structured light pattern, determining the type of each grid unit, and matching the grid encoding group with the encoding set to obtain its position. This invention achieves flexible, high-density, and highly occlusion-resistant absolute position encoding by uniquely and non-repeating grid encoding groups composed of multiple consecutive grid units, making it suitable for high-precision three-dimensional measurement.

The utility model discloses a kind of flap valves, belong to gas flow detection technical field, specifically related to a kind of flap valve device, comprising: frame, stepper motor, extension arm, support, flap, thick pipe air inlet pipe mouth and thin tube air inlet pipe mouth;Stepper motor, support fixed installation in frame, flap rotation is installed on support, one end of extension arm is sleeved on the rotating shaft of stepper motor, the other end is contacted with flap and swing on flap, and top bead and spring are equipped in the bottom of its extension arm;The utility model has the advantages of simple structure, mature technology, high reliability, low cost, high security, etc., especially in the occasion (such as petroleum, chemical industry, natural gas) and cost-sensitive occasion that security, explosion-proof requirement is extremely high, spring compression scheme of the utility model is first choice.

This invention relates to a temperature monitoring material with photochromic properties, its preparation, and its application, belonging to the interdisciplinary field of temperature monitoring and sensing technology. The chemical formula of this dosimeter material is CaF2:xNa. + The material is first uniformly ground manually or mechanically, then dried by baking or air drying, and finally pressed into a preform. After sintering, a temperature monitoring material with photochromic properties is obtained. The prepared product exhibits excellent performance in terms of tissue equivalence, temperature response speed, cost control, and portability. It has a temperature response range of 50-200℃, and the temperature information can be intuitively read through visually perceptible color changes, making it suitable for large-scale preparation and a wide range of applications.

This invention discloses a welding positioning device and its forming method for training missiles. The welding positioning device includes: a missile body welding fixture, a pouring fixture, a tail fin welding fixture, and two centers. Each of the two centers consists of a frustum and a round rod coaxially fixed to the large-diameter end of the frustum. The two centers are respectively used to hold the inner hole of the missile body's central tube and the positioning sleeve. The missile body welding fixture is used to weld and position the missile head and cylindrical section, and the missile head and mounting sleeve. The pouring fixture is used for pouring and forming concrete inside the conical section of the missile body. The tail fin welding fixture is used to weld and position the tail fin and the conical section, and to ensure the relative angle between the tail fin blades and the positional relationship between the blades and the missile body axis. This invention can ensure the welding quality and welding accuracy of the training missile, thereby ensuring coaxiality, symmetry, and straightness.

This invention belongs to the field of radar absorbing materials technology, and discloses a continuous alumina fiber reinforced alumina-based structure radar absorbing material and its preparation method. The radar absorbing material includes a composite material body, a reflective layer disposed on the back of the composite material body, a frequency-selective surface layer disposed on the front of the composite material body, and at least two metamaterial layers embedded within the composite material body; the composite material body is a continuous alumina fiber reinforced alumina ceramic matrix composite material with a density of 2.8~3.0 g / cm³. 3 The reflective layer is a continuous conductive layer; the frequency-selective surface layer is a discontinuous conductive layer composed of periodically arranged conductive patterns; the metamaterial layer is located between the reflective layer and the frequency-selective surface layer and has a periodic resistance pattern. This improves the operating temperature and mechanical properties, reduces the material thickness, and achieves wide-band absorption, with an infrared emissivity of no more than 0.3 in the 3~5μm band, thus enhancing infrared stealth capabilities.

The application relates to a composite reverse osmosis membrane based on a polyamide / polythiourea semi-interpenetrating network active layer and a preparation method thereof. The preparation method comprises the following steps: 1, pre-wetting treatment is performed on a substrate, the substrate is immersed in a solvent for sufficient wetting, and then the substrate is immersed in deionized water to sufficiently replace the solvent; 2, the treated substrate is contacted with a solution containing a thiocarbonyl compound to introduce a thiocarbonyl functional group on the surface of the substrate; 3, the treated substrate is contacted with an aqueous phase solution containing a polyamine, so that the thiocarbonyl compound and the polyamine react on the surface of the substrate to generate an amine-terminated polythiourea intermediate layer in situ; 4, the treated substrate is contacted with an oil phase solution containing a polyacyl chloride monomer, so that the amine group in the amine-terminated polythiourea intermediate layer and the polyacyl chloride monomer perform an interfacial polymerization reaction, meanwhile, the polyamine in the aqueous phase solution and the polyacyl chloride monomer react to form a polyamide / polythiourea semi-interpenetrating network active layer, and then post-treatment is performed to obtain the composite reverse osmosis membrane.

This invention proposes a method for preparing selenomethionine, comprising the following steps: S1. Inoculating selenium-resistant Bacillus subtilis into a culture medium containing sodium selenite for activation, and selecting seed culture in the logarithmic growth phase; S2. Inoculating the seed culture into a fermentation medium, providing carbon and nitrogen sources for cell proliferation in the early stage of fermentation, and adding inorganic selenium source and exogenous methionine precursor in the middle and late stages of fermentation, while adjusting dissolved oxygen and pH to reduce inorganic selenium into selenomethionine within the cells; S3. After fermentation, subjecting the fermentation broth to cell disruption, solid-liquid separation, and drying to obtain a product rich in selenomethionine. This preparation method, through staged fermentation, balances cell growth and selenium conversion efficiency, achieving efficient synthesis of selenomethionine from Bacillus subtilis. The product contains selenium primarily in the form of selenomethionine, with a high proportion of organic selenium. The strains used are highly safe, the process is mature, and the application value is significantly improved, making it suitable for industrial-scale production.

The application relates to a construction method for ensuring the safety of a shield tunnel underpassing a pipeline, which comprises the following steps: determining the maximum tensile strain increment [Delta epsilon t ] of the pipeline bottom at the intersection position of the shield tunnel and the pipeline plane projection; excavating the foundation, making a turning platform and a tensioning pedestal; installing and fixing a steel strand after forming a working face and providing a pre-tightening force through a jack; pasting a bottom strain gauge for measuring the pipeline longitudinal strain on the pipeline bottom at the intersection position of the shield tunnel and the pipeline plane projection; stopping the shield machine when the strain change cumulative value epsilon t is greater than 0.5 times [Delta epsilon t ]; eliminating epsilon t by gradually tensioning the steel strand through the jack; stopping the strain observation when epsilon t is less than 0.05 times [Delta epsilon t ] within three days; and restoring the ground after grouting in the pipeline longitudinal axis direction for 7-10 days. The application forms an efficient and low-cost construction method for effectively ensuring the safety of the pipeline, and the construction method is unique in process, mature in technology and beneficial to popularization.

The present disclosure relates to the technical field of infrared detection, and particularly relates to a non-cooled infrared detection pixel, a chip, a movement and equipment, the non-cooled infrared detection pixel comprising a readout circuit, an infrared sensing structure and one or more first interconnection structures connecting the readout circuit and the infrared sensing structure; the first interconnection structure comprises a first connecting part, a first copper connecting part and a second copper connecting part, two ends of the first copper connecting part are connected with the first connecting part and the second copper connecting part respectively, the first connecting part is connected with the readout circuit, and the second copper connecting part is connected with a beam structure of the infrared sensing structure; wherein at least the second copper connecting part is located on a side of the beam structure facing the readout circuit, and the beam structure is in a flat plane, so that the interconnection structure can solve the problem of unstable noise caused by the interconnection of the infrared detection chip, and can improve the process stability.

The application belongs to the technical field of biological medicine, and particularly relates to RAB8A as a biomarker for predicting the curative effect and prognosis of immunotherapy of non-small cell lung cancer (NSCLC) patients and application thereof. Through independent discovery and verification queues, it is proved that high expression of RAB8A in tumor tissues is significantly related to longer progression-free survival of NSCLC patients after receiving immunotherapy, and the expression level has good prediction efficiency on the curative effect and prognosis of immunotherapy. Detection of RAB8A protein expression can be used as an effective auxiliary tool for guiding the clinical decision of NSCLC immunotherapy.

The utility model provides a double-phase extraction soil and underground water remediation device suitable for in-production enterprises, and by adopting a mode of combining in-situ remediation and ex-situ remediation, soil and underground water can be remedied at the same time. A double-pump extraction system is adopted, a vacuum pump and a pneumatic diaphragm pump are arranged to extract gas and liquid in an underground polluted area respectively, the influence radius is large, the extraction rate can be freely adjusted, and limitation of the extraction depth of a single-pump system is avoided. A two-stage steam-water separator is adopted for ground surface equipment, extracted soil gas is primarily treated, it is guaranteed that gas entering the rear-end activated carbon box body is relatively dry, and the adsorption performance of activated carbon is not affected. The device can realize large-range remediation and treatment of deep polluted soil and underground water on the premise of not influencing surface production activities, and has the advantages of low carbon, environmental protection, small plot disturbance, low construction difficulty, adjustable remediation range and the like, and surface equipment is simple to operate and can stably run for a long time.

The utility model provides a rainwater purification and storage device, which relates to the technical field of water resource purification and comprises a support, a purification container, a drainage mechanism, a reservoir, an underground water kiln and an electric power storage controller capable of receiving weather information. The purification container is provided with a water receiving cavity with an upward opening, a plurality of convex lenses for gathering sunlight to the reservoir are distributed in the purification container, the outer surface of the purification container inclines downwards, an orifice communicated with the water receiving cavity is formed in the lowest point of the inclination, and a water inlet of the telescopic or rotary drainage mechanism corresponds to the orifice; the drainage mechanism is connected with the power storage controller, and the power storage controller controls the water outlet of the drainage mechanism to be arranged corresponding to the water inlet of the reservoir or the underground water kiln according to weather information. The water quality problem existing in rainwater storage application is relieved, the occupied area is small, the cost is low, and pollution cannot be caused.

This application provides a bidirectional controlled load cell and a rapid testing method for pile foundation bearing capacity, relating to the field of pile foundation testing technology. The load cell includes: two fixed plates for connection to the pile or reinforcing cage; multiple opposing-moving loading jacks located between the two fixed plates, distributed along the axis of the fixed plates, with the cylinder and piston rod of each jack fixedly connected to one of the two fixed plates; a first U-shaped commutator and a second U-shaped commutator located between the two fixed plates, arranged in a circumferential array at equal intervals along the axis of the fixed plates, with the openings of the first and second U-shaped commutators in the same group interlocking and their open ends detachably connected to the corresponding fixed plates; and opposing-moving loading jacks connected between the closed ends of the first and second U-shaped commutators in the same group. This application achieves all the testing effects of a reverse self-balancing experimental device and uses only one load cell, exhibiting high equipment integration.

The application discloses an airplane and a rear fuselage structure thereof, which is a structure capable of transferring out-of-plane bending moment of a reinforcing frame at a large opening of the airplane, all parts of which are integrally machined from 7050-T7451 aluminum alloy, and the process is mature; the crossbeam in the structure can bear the out-of-plane bending moment of the reinforcing frame, the rest parts can transfer the longitudinal load of the fuselage, and the structure can meet the requirement of opening a large cover on the fuselage. Meanwhile, the structure has strong load transfer capacity, light structure weight, simple assembly, corrosion resistance, and uses common standard parts, and has good processability and feasibility.