65results about How to "Mature technology" patented technology

The present application belongs to the technical field of internal combustion engine, and particularly relates to a kind of alcohol hydrogen fusion engine precombustion chamber system and its control method.Alcohol hydrogen fusion engine precombustion chamber system includes the engine main body with the main combustion chamber and precombustion chamber being communicated with each other, and also includes methanol supply unit, hydrogen production unit, hydrogen delivery control unit, exhaust gas recirculation unit and main control unit;Main control unit collects engine operating parameters and judges current working condition, and adjusts methanol supply path, hydrogen supply path, precombustion chamber working mode, hydrogen production unit heating mode and on-off state of exhaust gas recirculation unit according to working condition.The present application can realize engine full-condition combustion performance optimization without complex auxiliary device, and also considers cold start reliability, high and low load combustion stability and operation energy efficiency, to improve the whole machine operation reliability and transient response capability.

The invention relates to the technical field of heat dissipation materials, in particular to a Bi-In-Sn liquid metal phase change material for chip heat dissipation, a preparation method and a heat dissipation device, and is technically characterized in that the liquid metal phase change material is prepared from the following elements in percentage by mass: 42.0%-48.0% of Bi, 33.0%-40.0% of In and 12%-25% of Sn; the preparation method comprises the following steps: weighing Bi, In and Sn metal particles, and sequentially carrying out acid pickling, ultrasonic cleaning and drying treatment; under the high-purity argon protection environment, the pretreated metal particles are subjected to vacuum melting and stirring, and uniform liquid alloy is formed; and after the liquid alloy is cooled and formed, ultrasonic treatment is conducted, the Bi-In-Sn liquid metal phase change material is prepared, the advantage of low melting point is kept, meanwhile, unexpected improvement of latent heat performance is achieved, and the bottleneck problem of instantaneous thermal runaway of a chip in an extreme environment is effectively solved.

The utility model relates to the technical field of resonator wafer processing accessories, in particular to a wafer positioning plate with information codes. According to the utility model, the information code is arranged on the ceramic chip, the ceramic chip is fixedly connected in the positioning groove, and the upper surface of the ceramic chip is lower than the notch of the positioning groove, so that the information code is effectively prevented from being directly exposed, the damage risk caused by external friction, corrosion and other factors is reduced, and the service life of the information code is obviously prolonged; and the long-term readability of the information is ensured.

The application discloses a kind of wind turbine mixed tower tower cylinder water seepage monitoring system, method and wind turbine, including water seepage sensing unit, control unit, alarm unit and server, the water seepage sensing unit is arranged in spiral shape on tower cylinder inner wall from bottom to top, the control unit is electrically connected with water seepage sensing unit, the alarm unit and server are electrically connected with control unit respectively, utilize control unit real-time acquisition water seepage sensing unit inside current, when tower cylinder inner wall appears water seepage, short circuit occurs in water seepage sensing unit inside, control unit judges water seepage according to the loop current change of water seepage sensing unit and outputs alarm signal to alarm unit, and then according to the current size calculates water seepage distance, by server according to water seepage distance, tower cylinder and sensing line arrangement model is positioned to tower cylinder water seepage position.The application can long-term, comprehensive and effective real-time monitoring to tower cylinder rain water seepage situation, if water seepage is found, timely alarm and positioning water seepage position, it is convenient to check rectification.

This invention provides a method for preparing tensile specimens of CoFeNi medium-entropy alloy under deep supercooling conditions. The deep supercooling process of this method is carried out using a high-frequency induction heating device and a combination of melt immersion and cyclic superheating. During the melting process, the alloy raw materials are placed sequentially in a quartz crucible from bottom to top according to their melting points, with glass cleaning agents added to the bottom and top layers. During melting, the vertical movement of the quartz crucible along the central axis of the high-frequency induction coil and the heating temperature of the high-frequency induction coil are controlled to sequentially melt and coat the alloy surface with the glass cleaning agent, melt the Ni metal raw material, and melt the remaining metal raw materials. After the alloy liquid is thoroughly mixed, it is cooled and solidified. This heating and cooling solidification process is repeated until a supercooling of 205K is achieved, producing a CoFeNi medium-entropy alloy ingot that meets the dimensions required for tensile testing. This invention features an easily controllable solidification process, mature technology, and minimal component loss.

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.

The invention provides a zirconium-based solid electrolyte and a preparation method and application thereof, the chemical composition of the inorganic zirconium-based solid electrolyte material is Lix + yZrCl4 + x (OH) y, x is more than or equal to 0 and less than or equal to 2, and y is more than 0 and less than or equal to 2. The hydroxyl group is introduced to induce the material to generate lattice distortion and form a two-phase mixed region, and the rotation characteristic of the hydroxyl group is utilized to reduce the steric hindrance of lithium ion transmission, so that the ionic conductivity is remarkably improved. Besides, the introduction of the hydroxyl group induces in-situ generation of a self-limiting stable interface layer rich in Cl when the electrolyte is in contact with a lithium negative electrode, so that side reaction is effectively inhibited, and direct stable matching of the zirconium-based solid electrolyte and the lithium negative electrode is realized.

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.

The invention provides a preparation method of a spherical padding for sintering a resistor disc of a lightning arrester, and belongs to the technical field of manufacturing of lightning arresters. The method comprises the following steps: firstly, preparing slurry by taking granulation waste as a raw material, and then preparing the spherical padding by virtue of a breakthrough titration forming process for the first time, so that the forming precision is high, the spherical quality is excellent, the use performance of the padding can be directly improved, the material structure is stable, the performance loss is low, and the original characteristics of the waste can be reserved to the greatest extent; the damage to the material performance in the preparation process is reduced. In addition, the preparation method provided by the invention is simple, the process is mature, and the use amount of additives is small, so that the production cost can be effectively reduced, and the economic value is relatively high.

This utility model discloses an inclined pile support structure for retaining walls, comprising three parts: a retaining wall, a beam, and an inclined pile support. The beam is a reinforced concrete structure located at the top of the retaining wall. The upper end of the inclined pile support is a steel pipe pile, and the lower end is a high-pressure jet grouting pile. The high-pressure jet grouting pile is located below the foundation pit surface. The upper end of the steel pipe pile is anchored into the beam, and the lower end is inserted into the high-pressure jet grouting pile. A first sealing steel plate plug is installed at the upper end of the steel pipe pile, and a second sealing steel plate plug is installed at the lower end of the steel pipe pile. The second sealing steel plate plug is provided with grouting holes. A waterproof steel plate is welded around the steel pipe pile at the cross-shaped steel plate pile tip located in the foundation pit. The waterproof steel plate is fixed in the foundation pit layer. The lower end of the steel pipe pile is a spherical grout bubble.

The application discloses a steam production system, which solves the problems of great design and construction difficulty and weak adjustment capacity of long-distance steam pipeline. The steam production system comprises a steam generation unit and a compressor unit. The steam generation unit comprises N-stage flash evaporators, and the compressor unit comprises N-stage compressors, wherein N is greater than or equal to 2. The N-stage flash evaporators are connected in series, and flash water passes through the N-stage flash evaporators in sequence. The Mth-stage compressor is connected with the Mth-stage flash evaporator, 1 is less than or equal to M and is less than or equal to N, steam generated by the Mth-stage flash evaporator is input into the Mth-stage compressor, and the Mth-stage compressor outputs the steam after compression. The application uses hot water pipeline network to replace long-distance steam pipeline, reduces the design and construction difficulty, and improves the system stability and production efficiency.

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.

The invention relates to the technical field of chemical synthesis, in particular to a preparation method of a key intermediate of trifluorobenzene pyrimidine. The key intermediate is N-(5-pyrimidinylmethyl)-2-aminopyridine, and the preparation method comprises the following steps: mixing 2-fluoropyridine and ammonia water, heating to react, after the reaction is finished, naturally cooling to room temperature, and slowly releasing residual ammonia gas in a reaction container; and adding acetonitrile and 5-bromomethyl pyrimidine, heating, stirring to react, cooling to normal temperature, keeping the temperature to react for 1 hour, cooling to-5 DEG C, stirring for 2 hours, filtering and drying to obtain the N-(5-pyrimidinylmethyl)-2-aminopyridine. The target product is obtained by taking 2-fluoropyridine as a starting raw material through one-pot substitution, and the route has the advantages of easily available raw materials, controllable cost, simple and easy operation, easily available raw materials, low cost, mild conditions, mature process, high yield and purity, and is suitable for industrial mass production.

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.

The present application relates to a tetracyclic sesquiterpene compound and a synthetic gene cluster thereof, and belongs to the field of genetic engineering. The tetracyclic sesquiterpene compound synthetic gene cluster is derived from Fusarium oxysporum 14005, and the gene cluster contains six genes, namely, a gene fomdE or a functional equivalent thereof encoding a sesquiterpene synthase FoMS, genes fomdA, fomdC and fomdD or functional equivalents thereof encoding cytochrome P450 enzymes fomdA, fomdC and fomdD, a gene fomdB or a functional equivalent thereof encoding an aldehyde-ketone reductase fomdB, and a gene fomdF or a functional equivalent thereof encoding a hydrolase fomdF. The Mangicols gene cluster discovered in the present application catalyzes the production of a new tetracyclic sesquiterpene compound, and provides valuable lead compound resources for enriching the natural product compound library and discovering new antibiotics.

The invention relates to the technical field of expanded ammonium nitrate explosives, in particular to a preparation method of a high-free-flowing liquid-mixed expanded ammonium nitrate explosive, which comprises the following steps: adding porous granular ammonium nitrate accounting for 15-25% of the weight of a liquid-mixed ammonium nitrate base material into the liquid-mixed ammonium nitrate base material prepared after expanded crystallization; the preparation method of the porous granular ammonium nitrate comprises the following steps: preparing rice husk charcoal from rice husks in an inert atmosphere, dispersing the rice husk charcoal in ethanol, adding tetraethoxysilane, adjusting the pH value, and filtering, washing and drying after the reaction is completed to obtain a charcoal-silicon composite carrier; adding a nonionic surfactant and a silane coupling agent to pre-treat the ammonium nitrate feed liquid; adding a carbon-silicon composite carrier into the pretreated ammonium nitrate feed liquid, preserving heat, and uniformly stirring to obtain premixed liquid; and finally, carrying out spray drying to obtain the porous granular ammonium nitrate. The prepared expanded ammonium nitrate explosive has good free-running property and moisture absorption resistance, and is safe and reliable in explosion performance.

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 invention discloses a room-temperature hydrogen sulfide (H2S) sensor based on stannic oxide (SnO2) hollow spheres and polypyrrole (PPy) nanotubes and a preparation method of the room-temperature hydrogen sulfide (H2S) sensor, and belongs to the technical field of gas sensors. A green and low-cost chemical synthesis process is adopted, SnO2 hollow spheres and PPy nanotubes are prepared, a gas sensitive material with a multi-stage micro-nano structure and a p-n heterojunction is formed through composite construction, and the surface of an interdigital electrode is coated with the gas sensitive material to prepare a sensing device. The composite material combines abundant active sites brought by high specific surface area of the SnO2 hollow spheres and excellent room temperature conductivity of the PPy nanotubes, and effectively solves the problems of high working temperature and large energy consumption of a traditional metal oxide sensor. Tests show that the sensor has the characteristics of quick response and short recovery time to H2S gas at room temperature. In addition, the preparation process is simple, raw materials are cheap and easy to obtain, and the method is suitable for large-scale production and has wide application prospects in the fields of industrial safety monitoring and environment detection.

The utility model provides a phenol tower distributor for a phenol ammonia recovery system, which comprises a phenol tower and an MIBK feed distributor, the phenol tower comprises a bottom fixed part, a barrel and a top elliptical head part, a support convenient for supporting and fixing the MIBK feed distributor is arranged in the barrel, the MIBK feed distributor comprises an MIBK main tank, a first branch tank, a second branch tank and a third branch tank, and the first branch tank, the second branch tank and the third branch tank are communicated with each other. The phenol tower distributor rectification method is mature in technology and simple to operate, the purity of the regenerated extractant is high, and the influence on the extraction effect is small when the extractant is recycled; the alkali washing back extraction method has the characteristic of low energy consumption, but the impurity content of an extracting agent regenerated by the back extraction method is higher, and the recovered crude phenol exists in the form of a sodium phenolate solution. And compared with MIBK, the diisopropyl ether has the advantage that the distribution coefficient of the diisopropyl ether to polyphenol is low.

The invention discloses a high-performance extreme ultrathin vapor chamber and a preparation method thereof, and relates to the technical field of heat dissipation devices, the high-performance extreme ultrathin vapor chamber comprises an upper cover plate, a lower cover plate, a liquid storage tank, an ultra-infiltration supporting layer, a steam chamber and a phase change working medium; the upper cover plate and the lower cover plate are connected in an attached mode, the super-infiltration supporting layer is located between the inner concave face of the lower cover plate and the inner concave face of the upper cover plate, a plurality of steam cavities are evenly distributed in the super-infiltration supporting layer, and the phase change working medium is borne in the super-infiltration supporting layer. And the area of the inner concave surface of the lower cover plate is further concave to form the liquid storage tank. The invention creatively provides a phase change-infiltration coordinated regulation and control strategy, the high-performance extreme ultrathin vapor chamber with the thickness of only 0.1-0.24 mm is prepared through a highly coupled infiltration-support link, arrangement of a liquid storage pool, excavation of a steam chamber and optimization of key parameters, and the double limits of thickness and performance are broken through.

The application belongs to the technical field of mineral processing, and discloses a tin-containing iron ore suspension magnetization roasting treatment method. After dry grinding of tin-containing iron ore, decomposition roasting and magnetization roasting are carried out, efficient and reasonable separation of iron and tin in the tin-containing iron ore is realized, and tin metal can be recycled. The method has the advantages of simple process, high separation efficiency, low cost, environmental friendliness and the like.

The application discloses a high-doped phosphogypsum pavement base material and a preparation method thereof, and belongs to the field of pavement base materials. The material comprises, by weight, 7-9 parts of a binding agent, 30-45 parts of phosphogypsum artificial fine aggregate, 45-60 parts of phosphogypsum artificial coarse aggregate and 0.05-0.1 parts of water glass; wherein the binding agent is formed by mixing 3.5-4.5 parts of phosphogypsum, 3-3.5 parts of slag powder, 0.3-0.7 parts of cement and 0.2-0.3 parts of phosphorus slag powder. The phosphogypsum artificial aggregate is prepared by mixing phosphogypsum, slag powder, cement, a performance regulator, water and a water reducing agent, and then pouring, curing, crushing, shaping and screening. The preparation method of the material comprises three steps of pretreating aggregate, mixing materials and shaping and curing. The application realizes high-doped utilization of phosphogypsum, solves the technical problems that the utilization rate of phosphogypsum and the road performance cannot be simultaneously considered and the construction convenience is poor in the current phosphogypsum pavement base material, and the obtained material has good road performance.

The invention discloses a bispecific fusion protein based on Th17 immune axis regulation and application of the bispecific fusion protein in combined treatment of inflammatory bowel disease and psoriasis. The fusion protein is formed by sequentially connecting a human IL-23 receptor (IL-23R) extracellular functional structural domain, a flexible connecting peptide and a human trefoil factor 3 (TFF3). According to the invention, IL-23R is specifically combined with IL-23 highly expressed at a focus part to block a cascade reaction of a Th17 inflammation axis, and TFF3 with a mucosa repair function is delivered to damaged tissues in a targeted manner. Experiments show that in a DSS-induced ulcerative colitis model and an IMQ-induced psoriasis model, the fusion protein is obviously superior to a single-target drug in the aspects of reducing disease activity index (DAI), improving skin lesion score (PASI) and promoting histopathological repair, has a synergistic effect of anti-inflammation and repair, and provides a new strategy for treatment of autoimmune diseases.

The invention discloses an external bias device for a low-temperature probe and further discloses a de-embedding calibration measurement method of the external bias device for the low-temperature probe, the external bias device comprises a radio frequency test instrument, an external bias unit, a bias feed network and a low-temperature magnetic resonance probe, the external bias unit is used for providing direct-current bias voltage, and the bias feed network is used for providing direct-current bias voltage; the radio frequency test instrument is used for generating a test signal in the low-temperature magnetic resonance probe, and a direct-current bias signal output by the external bias unit forces the PIN diode to be converted from a high-resistance isolation state to a low-resistance conduction state; then the radio frequency testing instrument is started, milliwatt-level signals generated by the radio frequency testing instrument can easily reach the radio frequency coil through the passive T / R switch, so that the radio frequency coil is tested, the passive T / R switch is switched on under the conditions that the packaging structure of the low-temperature magnetic resonance probe is not damaged and an internal circuit is not changed, and the low-temperature magnetic resonance probe is tested. Therefore, a radio frequency test channel is established.

The application relates to a preparation method of a high-stability thick-film transfer flexible thermocouple, and belongs to the technical field of temperature sensors. The application specifically relates to a preparation method of a high-stability thick-film transfer flexible thermocouple. The application aims to solve the problems of complex preparation process, poor stability and difficult guarantee of thermocouple precision of the flexible thermocouple. The method comprises the following steps: S1, preparing a sacrifice layer; S2, preparing a high-stability thick-film thermocouple; S3, transferring the high-stability thick-film thermocouple; and S4, encapsulating to obtain a high-stability thick-film thermocouple flexible temperature sensor. The thermocouple has the advantages of excellent stability, high precision and flexibility, can be widely applied to flexible electronics and special-shaped surface micro-environment temperature signal collection and measurement, and the flexible temperature sensor prepared by the application is designed and manufactured based on a thick-film process technology, has a mature manufacturing process, low cost and is easy to mass produce.

This invention discloses a micro / nano optical fiber and surface coating preparation device and method based on evanescent field photocuring for surface encapsulation. The device includes standard optical fibers at both ends, a middle waist fiber, and two transition fiber sections connecting the standard and waist fibers. An ultraviolet (UV) adhesive coating is attached to the waist fiber. Low-refractive-index UV adhesive is cured in situ using an evanescent field transmitted on the outer surface of the micro / nano optical fiber, forming a surface coating that conforms to the fiber's own structure. The coating thickness is as low as the micrometer level. This effectively isolates the evanescent field and avoids surface contamination of the optical fiber, while reducing the size of the micro / nano optical fiber sensor, achieving a spatial resolution at the micrometer level, which is beneficial for miniaturization and integration. The use of low-refractive-index UV adhesive as the coating material ensures that the coating refractive index is lower than that of the optical fiber, allowing the optical signal transmission to meet the total internal reflection waveguide condition, ensuring low-loss transmission. Furthermore, the UV adhesive cures instantaneously within 0.1–1 s under UV light irradiation, supporting the formation of the surface coating during rapid movement.