104results about How to "Adapt to a wide temperature range" patented technology

The present invention relates to a multipath voltage stabilizing isolated digital DC/DC electric power source and a control method thereof. The DC/DC electric power source comprises the following components: a main power topological, an isolated transformer, an primary controller, a secondary controller, a driving circuit, a voltage and current detecting channel, a feedback and sampling channel, a primary accessory electric power source, a secondary accessory electric power source, a parameter memorizer and a communication interface. In the DC/DC electric power source control method, the DC/DC electric power source is leaded to start to operate with a soft starting mode through the primary controller, and the fixed duty ratio of the dead zone of the complementary belt is outputted when the soft starting has finished to control the main switch component of the converter. The secondary controller does setting according to the prearranged parameter. The electrifying time-delay of each path is set according to the starting time sequence, and a mode of soft starting is adopted for outputting the voltage of each path. The invention relates to a full-digitally controlled DC/DC electric power source, wherein the hardware compensation network is replaced by the software code, and the electric power source according to the invention has the advantages of broad range of the adapting temperature and strong interference resistance. And at the same time the controller parameter, the electrifying time sequence, the protecting threshold and the like can be modified flexibly.

The invention discloses a preparation method of an SCR (Selective Catalytic Reduction) flue gas denitrification catalyst. The preparation method comprises the following steps: (1) firstly preparing a mixed solution of titanium sulfate and amino carboxylate, adding powdered molecular sieve into the mixed solution for dipping, and carrying out drying and roasting to prepare a TiO2-molecular sieve composite carrier; (2) dipping the TiO2-molecular sieve composite carrier prepared in the step (1) into dipping liquid containing an active component and an adjuvant precursor, and carrying out drying and roasting to obtain denitrification catalyst powder; (3) mixing the denitrification catalyst powder obtained in the step (2) with glass fiber, wood pulp, polyacrylamide, carboxymethyl cellulose, ammonia water and deionized water, and carrying out kneading, aging, extrusion, drying and roasting to obtain a cellular denitrification catalyst. The preparation method is simple in preparation process and low in cost; the obtained denitrification catalyst is wide in active temperature range, high in denitrification activity and high in SO2 and H2O poisoning resistance.

The invention relates to a composite polymer waterproof board, which is prepared from the following components in part by weight: 30 to 90 parts of ethylene-vinyl acetate (EVA) copolymer, 20 to 50 parts of linear low density polyethylene (LLDPE) and 0.5 to 1.5 parts of antioxidant. The composite polymer waterproof board has high seepage resistance, high barrier property, high puncture resistance, no chemical pollution, and resistance to acid, alkali and various chemical substances. The invention discloses a synthetic resin polymer waterproof board with high elongation and wear resistance and a preparation method thereof. The waterproof board is suitable for water and seepage resistance of civil engineering such as various tunnels, underground civil engineering, urban subways, water conservation, artificial lakes, refuse landfills, petrochemical plant waste residue treatment sites, sewage regulating tanks and the like.

The invention discloses a method for joint coating on pipeline by heat-shrinkable tape, which comprises the following process flows of: polarization treatment on the heat-shrinkable tape, blasting treatment on a surface of the joint coating, gas treatment on the surface of the joint coating, preservative treatment on the surface of the joint coating, wrapping the heat-shrinkable tape on the surface of the joint coating and other procedures. The method has the advantages of simple process, simple and convenient operation, strong bond strength, high anti-corrosive property, long service life, wide adaptive temperature range, and convenient construction, and is beneficial to popularization and application.

The invention discloses an endoglucanase coding gene, a recombinase and application, belonging to the technical field of biology. The sequence of the endoglucanase coding gene is shown as SEQ ID NO.1; and the sequence of the recombinase of the endoglucanase is shown as SEQ ID NO.2. Experiment proves that the recombinant endoglucanase provided by the invention has high carboxymethyl cellulose enzyme activity (up to 2245U/mL) and the transparent circle diameter of a colony is 30 times larger than that of the initial strain. The endoglucanase coding gene and the recombinase provided by the invention can be widely used in the degradation of celluloses.

The invention relates to a novel two-stage absorption solar air conditioning system. In the technical scheme, a vacuum tube heat collector with a compound parabolic reflector is used as a solar heat collector, and hot water generated by the solar heat collector heats a solution in a two-stage lithium bromide absorption refrigerator by separate heat pipes to drive the refrigerator to refrigerate a room for air conditioning. An auxiliary gas heat source is arranged in the system, and when the heat of a solar heat source is insufficient, a gas heater is started for auxiliary heating. The system adopts the design of two pipelines, one part of generated hot water drives the refrigerator directly by heat pipes to refrigerate a room to reduce pipeline waste, and the other part is stored in a water tank for later use when hot water in heat pipes is insufficient. According to the measures, the utilization of solar energy can be improved synthetically, the energy is saved; and by using the novel heat pipe technology, heat exchange efficiency is increased, and high efficiency and energy saving can be obtained by the solar air conditioning system.

The invention discloses a discharge reducing and resourcing method of coal-burning power station flue gas carbon dioxide, which is characterized by the following: adopting amino material as adsorbent; injecting amino material solution as ammonium salt pattern into the flue gas of carbon dioxide adsorbing system after pre-dedusting the tail part of coal-burning stove to reduce 20-95% carbon dioxide in the flue gas; separating and purifying to obtain high-purity carbon oxide; fitting for industrial, chemical, food manufacturing, oil extracting oil displacement and so on; making the escape rate of ammonium in the clean gas discharged by defroster not more than 15mg/Nm3. The invention simplifies the flow path technique with obvious kind and quantity of manufacturing equipment, which has more widely using prospect.

The invention provides a drive joint suitable for deep-space high-low-temperature environment. The drive joint is characterized by comprising a step motor, a short cup type harmonic reducer, a rotary transformer, a housing end cover, a housing, an output shaft, an angular contact bearing, a disc spring, an inner shaft sleeve, an outer shaft sleeve, a stop nut and a bearing end cover. After being amplified by the reducer, motor torque drives a performing mechanism to rotate through the output shaft, the rotary transformer is mounted on the output shaft for directly detecting an output angle of the drive joint, the torque transmission path is the shortest and connecting links are fewest, so that the drive joint has the advantages of being wide in applicable temperature range, high in reliability, small in return difference, small in axial jump, great in transmitted torque and the like.

The invention relates to a gallium-lanthanum silicate serial crystal high-temperature zero-temperature compensating cut type and application. As for a gallium-lanthanum silicate serial crystal of 32 point groups, a positive d11 direction is taken as the positive direction of x, y and z directions are determined according to a right-hand screw rule; the thickness direction of the crystal is Y, the length direction is X, an alpha angle is rotated in the X direction according to the right-hand screw rule and is marked as YXltw(alpha), the alpha is larger than -90 degrees and smaller than 20 degrees, the alpha is anticlockwise rotated, and the -alpha is clockwise rotated; and the dimensional proportion of the thickness, the width and the length of the cut type is 0.2-2:6-12:6-12. The gallium-lanthanum silicate serial crystal high-temperature zero-temperature compensating cut type and a frequency device of the invention have the characteristics of high frequency stability, wide adaptive temperature range, simple wafer processing and the like.

The invention provides a decomposing agent and a decomposing application thereof to manure of a laying hen. The decomposing agent comprises the following components by weight: 2 to 4% of a composite microbial agent, 40 to 60% of an organic material and 40 to 60% of a mineral substance, wherein the composite microbial agent comprises bacteria and fungi; the content of active bacteria in the composite microbial agent is no less than 200 million CFU/g of the compound microbial agent; the content of active fungi in the composite microbial agent is no less than 25 million CFU/g of the composite microbial agent; the bacteria are one or a mixture of more selected from the group consisting of Bacillus subtilis, Bacillus thermophilus, Bacillus licheniformis, Bacillus megaterium and Lactobacillus plantarum; and the fungi are one or a mixture of more selected from the group consisting of Trichoderma reesei, Trichoderma viride, Aspergillus oryzae, Aspergillus niger, saccharomycetes, white rot fungi, Geotrichum candidum, Mucor racemosus, Trichoderma koningii and Thermophilic sporotrichum. The decomposing agent provided by the invention can quickly decompose the manure of the laying hen and reduces the loss of nutrients in the process of decomposing.

The invention discloses a coaxial three-reflection telescope objective for a planar view field without secondary blocking. The telescope objective comprises a main lens, a secondary lens, a tertiary lens, a deflection mirror, a foldable plane mirror and a focal plane. Rotation symmetric axes of the main lens, the secondary lens and the tertiary lens coincide with a main optical axis, and an aperture diaphragm is placed on the main lens. The main lens and the tertiary lens are both ellipsoid faces, and the secondary lens is a hyperboloid. The deflection mirror is arranged on an emergent light path of the tertiary lens, the normal of the deflection mirror inclines relative to the main optical axis, and an image surface is led out of the optical axis. By reasonably arranging the position of an exit pupil, secondary blocking is not generated on the deflection mirror. The problems that in an existing coaxial three-reflection system, a detector is difficult to install and secondary blocking exists in the planar view field are solved. The telescope objective has the advantages of being long in focal length, large in aperture, little in blocking, small in size, low in weight, simple in structure, wide in work waveband and good in imaging quality, and is suitable for staring cameras, video cameras, front lens of imaging spectrographs and other optical imaging fields.

The invention provides an ultrahigh-strength tough cement slurry system for well cementation and preparation and application thereof. The ultrahigh-strength tough cement slurry system for well cementation comprises the following raw materials: 100 parts by weight of cement, 20-40 parts by weight of a high-temperature reinforcing material, 0.5-6 parts by weight of an inorganic toughening material, 0.5-4 parts by weight of a suspension stabilizer, 2-6 parts by weight of micro silicon, 0.5-1.5 parts of a dispersing agent, 2-6 parts of a fluid loss agent, 1-8 parts of a retarder, 0.2-1 part of a defoaming agent and 40-60 parts of clear water. The cement paste system is good in flowability and sedimentation stability, low in water loss, adjustable in thickening time and wide in adaptive temperature range; the set cement has the characteristics of ultrahigh strength and the like, well cementation requirements of deep shale gas, high-temperature deep wells and the like can be well met, set cement strength decline caused by high-temperature strength can be avoided, and the service lifetime of an oil-gas well can be further prolonged.

The invention discloses an improved hybrid energy-storage single tank. The improved hybrid energy-storage single tank comprises a phase-change heat accumulator, a thermocline heat-storage single tank,molten salt, phase-change heat-accumulation materials, shell and tube heat exchanger pipelines, a large quantity of porous medium filler, an upper air diffuser and a lower air diffuser. The phase-change heat accumulator is tightly connected with the thermocline heat-storage single tank in the vertical direction. The thermocline heat-storage single tank is filled with the porous medium filler. Theshell and tube heat exchanger pipelines and the phase-change heat-accumulation materials are evenly arranged in the phase-change heat accumulator. The interior of each shell and tube heat exchanger pipeline is of a corrugated pipe structure. The upper air diffuser is mounted on the upper portion of the phase-change heat accumulator and is externally connected with a top inlet of a tank body. Thelower air diffuser is mounted on the lower portion of the thermocline heat-storage single tank and is externally connected with a bottom outlet of the tank body. The heat storage and release efficiency of the heat-storage tank is improved, and the effective heat storage and release capacity of the heat-storage tank is improved; and compared with a double-tank heat-storage system, the improved hybrid energy-storage single tank has the advantages of being simple in structure and low in investment cost.

The invention belongs to the technical field of fracturing fluid preparation and discloses recoverable biological composite emulsion fracturing fluid and a preparation method and a utilization method.The fracturing fluid is prepared from, by weight, 6%-12% of acrylate, 3%-8% of acrylamide, 8%-15% of alkyl acrylamide, 15%-30% of an emulsifying agent, 4%-8% of 2-sodium propanesulfonate in mass fraction of 18%, 0.2%-0.7% of an initiator, 5%-10% of methylene bisacrylamide, 2%-5% of EDTA, 2%-5% of quaternary ammonium salt cationic monomers, 0.2%-0.8% of fluorine-containing polyfunctional acrylic ester and the balance water. The preparation method includes steps: A, mixed liquid preparation; B, reaction liquid preparation; C composite emulsion fracturing fluid preparation. The utilization method includes a step of adjusting a mixing weight ratio of the composite emulsion fracturing fluid to water according to a reservoir temperature to prepare working solution. The recoverable biological composite emulsion fracturing fluid has advantages of wide adaptive temperature range and high temperature resistance.

The invention relates to the technical field of unmanned aerial vehicles, in particular to a high-sensitivity triaxial unmanned aerial vehicle. The high-sensitivity triaxial unmanned aerial vehicle comprises a bottom frame, a vehicle body is mounted on the base frame, three vehicle arms with the same specification are arranged around the vehicle body at equal intervals, and a rotor wing is arranged on one end of each vehicle arm. According to the high-sensitivity triaxial unmanned aerial vehicle, a Cortex-M4 core processor is adopted to process command data, the response time of the unmanned aerial vehicle is shortened, and meanwhile, the mounting structure of propellers of the unmanned aerial vehicle is changed; only three rotor wings are required to drive the unmanned aerial vehicle to fly, the transmission efficiency of the unmanned aerial vehicle is improved, and the steering radius of the unmanned aerial vehicle reaches the smallest; through the streamlined shell structure, the wind resistance of the unmanned aerial vehicle is the smallest, and the flying parameters can be quickly read by adopting an OSD module of MAX7456 series and are displayed on a displaying screen so thata user can know the flying dynamic state of the unmanned aerial vehicle in real-time; and through cooperated using of a plurality of sensors, and the stability performance and environment adapting performance of the unmanned aerial vehicle are greatly improved.

The invention provides a facultative marine fungi repairing agent modified by double amidoxime groups and a method for repairing uranium-polluted water body. According to the facultative marine fungirepairing agent and the method, the facultative marine fungus Fusarium sp.#ZZF51 is adopted as the substrate, and the facultative marine fungi repairing agent is prepared through condensation, nucleophilic substitution and nitrile group amidoximation reaction. The facultative marine fungi repairing agent is used for repairing the uranium-polluted water body, the specific repairing steps are as follows: A, adding 0.05-0.25 g of the facultative marine fungi repairing agent modified by the double amidoxime groups according to the ratio that each litre contains 20-60 mg of uranyl ions, wherein thepH value of the uranium-polluted water body is controlled to be 3.0-7.0; B, carrying out vibration stirring by adopting a vibration stirring device, wherein the stirring rotation speed is 120-180 rpm, the stirring time is 30-150 min, and the temperature is 18-32 DEG C; and C, after repairing, fishing out the facultative marine fungi repairing agent modified by the double amidoxime groups, transferring the facultative marine fungi repairing agent modified by the double amidoxime groups to a safe place for drying and incineration, and finally, carrying out centralized landfill treatment.

The invention relates to a compositing and compounding process for a bactericide for oilfield wastewater reinjection treatment. The compositing and compounding process comprises steps as follows: (1), hexamethylenediamine is added to a reaction kettle, the temperature is raised in a stirring state, and iminourea hydrochloride is added; (2), the temperature is raised continuously, a thermostatic reaction is performed, and meanwhile, hydrochloric acid is added dropwise to serve as a catalyst; (3), the temperature is raised continuously, and a thermostatic reaction is performed; (4), after the reaction is finished, water and hydrochloric acid are added and uniformly stirred, and a product generated in the reaction is polyhexamethyleneguanidine chloride; (5), polyhexamethyleneguanidine chloride, tetrakis hydroxymethyl phosphonium sulfate, a biquaternary ammonium salt bactericide, nonylphenol polyoxyethylene ether-10, methylisothiazolinone and water are added to a preparation kettle and fully stirred; (6), a sodium hydroxide solution is added, and a pH (potential of hydrogen) value is adjusted to range from 7 to 9. The process has the beneficial effects that the character is stable; adding is simple; various agents are compounded, so that the problem of bacterial resistance is solved; the purpose of quickly killing bacteria in waste through the bactericide with lower concentration is achieved.

The present invention discloses a cable briaded bushing and its production method. It is made up by using diamagnetic metal fibre through the processes of cylinder-making, balling, braiding, winding-forming and packaging, etc.