18results about How to "Suitable for a wide temperature range" patented technology

The invention relates to a quench cooler electric decoking device and an electric decoking process, and belongs to the field of petrochemical engineering, the quench cooler electric decoking device comprises a current conversion controller, an input electrode, an output electrode, an input detection electrode, an output detection electrode, a detector and a pulse power supply. The input electrode and the input detection electrode are connected to the inlet end of a furnace tube of the quench cooler, the output electrode and the output detection electrode are connected to the outlet end of the furnace tube of the quench cooler, and the detector is connected with the input detection electrode and the output detection electrode. The current conversion controller loads set voltage and current to the two ends of the quench cooler furnace tube through the input electrode and the output electrode, and an electromagnetic field is formed in the quench cooler furnace tube; the flow direction of the reaction material in the furnace tube of the quench cooler is the same as the flow direction of the current; and the input detection electrode and the output detection electrode are used for detecting voltages at two ends of the furnace tube of the quench cooler in real time. The method improves the decoking effect, is suitable for decoking and oxygen-containing flue gas purification at high temperature, and prolongs the operation cycle of the quench cooler.

The invention belongs to the technical field of lubricating grease, and relates to environment-friendly drilling tool thread grease and a preparation method thereof. The lubricant with the oily micro-lamellar structure wrapped with solid particles is prepared by taking a high-molecular polymer as a matrix and taking graphite, mica and molybdenum disulfide as lubricants, the lubricant with the oily micro-lamellar structure can form a film on the surface of a drilling tool and can be uniformly dispersed in thickened base oil, and under the action of the high-molecular polymer matrix, the lubricant with the oily micro-lamellar structure can form a film on the surface of the drilling tool. And a layer of net-shaped firm film can be formed. The drilling tool thread compound containing the oily microsphere lubricant further comprises base oil, a thickening agent, an antioxidant and a preservative. Under the synergistic effect of all the components, the drilling tool thread compound has better bearing capacity and extreme pressure resistance, the use temperature range is-80 DEG C to 500 DEG C, and the drilling tool thread compound does not contain any heavy metal, is environmentally friendly and can still keep lubricity and sealing performance under the conditions of high temperature, low temperature and large torque.

The present invention discloses a bacterial agent, culture and application thereof for delaying the corruption of potato waste, and relates to the technical field of plant waste preservation. The bacterial agent includes at least one of the following bacteria: Lactobacillus amylovora, Lactobacillus mucus fermentation and Lactobacillus plantarum. The bacterial agent provided by the present invention can delay the corruption of plant waste, reduce the dry matter loss rate of plant waste, significantly increase the lactic acid content in the sample, and reduce the content of short-chain fatty acids; reduce the loss of dry matter in potato waste during storage, and avoid the loss of nutrients in the waste caused by drying. The method for delaying corruption by the bacterial agent provided by the present invention is simpler, has low energy consumption, does not require drying, freeze-drying and other processing processes, and is simple and easy to implement.

The invention relates to the technical field of lubricating materials, and provides a gel-impregnated porous copper self-lubricating bearing retainer material as well as a preparation method and application thereof. The gel-impregnated porous copper self-lubricating bearing retainer material provided by the invention comprises porous copper and a supramolecular gel lubricant impregnated in pores of the porous copper, the supramolecular gel lubricant comprises base oil and a gelator. The impregnated gel porous copper self-lubricating bearing retainer material provided by the invention is high in oil content and high in oil retention rate, the problem of relatively high oil loss of an impregnated oil retainer material at a high speed is solved, and the tribological performance is remarkably improved.

The invention provides low-temperature-resistant self-powered sensing ionic hydrogel as well as a preparation method and application thereof, and belongs to the technical field of ionic hydrogel. The method comprises the following steps: dissolving one or two polymeric monomers in deionized water to obtain a solution 1; the polymeric monomer contains double bonds and simultaneously has one ligand group of carboxyl, sulfonic acid group, hydrazide group or amide group; adding a hydrophobic cross-linking agent and a photoinitiator into the solution 1, and uniformly stirring and mixing to obtain a solution 2; adding a central metal ion salt into the solution 2, and uniformly mixing and stirring to obtain a precursor solution; and adding the obtained precursor solution into a polytetrafluoroethylene mold, and carrying out free radical polymerization reaction under an ultraviolet lamp to obtain the low-temperature-resistant self-powered sensing ionic hydrogel. The ionic hydrogel disclosed by the invention has excellent conductivity and relatively high mechanical property at low temperature.

The utility model discloses a solar heat collector heat exchange system with air circulation heating, which belongs to the technical field of solar heat collection and comprises a straight-through type solar tube, two ends of the straight-through type solar tube are communicated through an air delivery tube, the air delivery tube is provided with a heat exchanger and a fan, the fan pushes air circulation heating, and the air circulation heating is achieved. And the heat exchanger transfers heat in the hot air to other media. The solar heat collector heat exchange system is researched and developed based on the practical application of the solar heat collector, and through air circulation heating, the solar heat collector heat exchange system with the air circulation heating function has the low maintenance rate and use cost.

The invention relates to a preparation method of a low-density cement paste anti-pollution agent, which comprises the following steps: 1, preparing raw materials: weighing organic phosphonic acid, organic ester and an initiator with preset weight; 2, preparing an organic phosphonic acid solution, dissolving the weighed organic phosphonic acid in water, heating to a preset temperature, and adjusting the pH value of the solution to a preset value; and 3, preparing the anti-pollution agent, namely adding the weighed initiator into the organic phosphonic acid solution, dissolving, adding the weighed organic ester, stirring to dissolve, cooling the solution, and adjusting the pH value to be neutral, thereby obtaining the anti-pollution agent. The low-density cement paste anti-pollution agent has the advantages that the preparation method is simple, the obtained low-density cement paste anti-pollution agent can react with cement hydration products after being added into cement paste, pollution of drilling fluid to the cement paste is prevented, the anti-pollution capacity of the cement paste is improved, the application method is simple and convenient, the well cementation technological process is simplified, and the single well cost is reduced.

The utility model discloses a kind of temperature and humidity test box temperature control system, including first refrigeration cycle unit, first temperature control cycle unit, second refrigeration cycle unit, second temperature control cycle unit and expansion cycle unit, second refrigeration cycle unit and first refrigeration cycle unit are connected in series, first temperature control cycle unit is connected and controls first refrigeration cycle unit, second temperature control cycle unit is connected and controls second refrigeration cycle unit, expansion cycle unit is connected on first, second refrigeration cycle unit.The utility model is suitable for wide temperature range, without heater-80~60 ℃ under condition;Temperature control precision is high, temperature fluctuation degree is ≤±0.02 ℃;Temperature rising speed is fast, compared with traditional mode and improve 10%~50%;Energy efficiency ratio is high, power consumption is small, maximum can save 50% power consumption.

The invention provides a high-temperature-resistant SCR denitration catalyst and a preparation method and application thereof.The denitration catalyst comprises active components and a carrier, the active components comprise vanadium pentoxide and tungsten trioxide, the carrier comprises titanium dioxide and silicon dioxide, the mass fraction of the active components in the denitration catalyst is 5.0-7.0 wt%, the mass ratio of the vanadium pentoxide to the tungsten trioxide is 1: (3.5-7), and the mass fraction of the carrier in the denitration catalyst is 1: (3.5-7). The molar ratio of titanium dioxide to silicon dioxide is (4-6): 1. The composition of the denitration catalyst is improved, a composite carrier of titanium dioxide and silicon dioxide is selected, the ratio of the titanium dioxide and the silicon dioxide is controlled, the thermal stability of the carrier is improved, and the situation that the activity is affected due to crystalline phase transformation during high-temperature impact is avoided; the catalyst is high in catalytic activity and wide in applicable temperature range; the catalyst is simple in composition and preparation process, stable in structure, free of additional heat compensation, efficient and energy-saving.

This invention belongs to the field of spintronics technology, and specifically discloses a Hessler alloy with adjustable damping factor and its preparation method. The preparation method includes preparing a Hessler alloy thin film on a substrate; applying a voltage to a piezoelectric ceramic to put the piezoelectric ceramic in a stretched state; attaching the substrate with the Hessler alloy thin film to the stretched piezoelectric ceramic, with the easy magnetization axis direction [110] of the Hessler alloy thin film parallel to the stacking direction of the piezoelectric ceramic; removing the voltage to obtain a Hessler alloy with adjustable damping factor in a compressed state. This invention achieves low-power, reversible control of the damping factor of the Hessler alloy through piezoelectric strain, and is applicable to fields such as magnetic random access memory, spin logic devices, and flexible magnetic sensors.

The present invention provides a polyimide film cold-pressed composite busbar for automobile capacitors and a preparation method thereof. The composite busbar comprises an upper busbar unit and a lower busbar unit. The upper busbar unit comprises an L-shaped upper busbar and an upper busbar insulating film. The L-shaped upper busbar comprises an upper busbar vertical plate and an upper busbar drainage flat plate, and the upper busbar insulating film is attached to the inner side of the upper busbar vertical plate; the lower busbar unit comprises an L-shaped lower busbar and a lower busbar insulating film. The L-shaped lower busbar comprises a lower busbar vertical plate and a lower busbar drainage flat plate, and the lower busbar vertical plate comprises a lower busbar positioning plate and a connecting plate located on the upper side, and the lower busbar insulating film is attached to the inner side of the lower busbar positioning plate; the materials of the upper busbar insulating film and the lower busbar insulating film are both polyimide; the composite busbar provided by the present invention solves the problems of insufficient high temperature resistance grade, insufficient high voltage resistance grade, insufficient wear resistance and early failure in the prior art.

The invention discloses a GIS outgoing line sleeve which comprises a head assembly, a conductive tube, an insulating core body, a hollow composite insulator, a middle flange and a tail assembly. The two ends of the conductive tube are electrically connected with the head assembly and the tail assembly respectively. The insulating core body sleeves the conductive tube, and one end of the insulating core body is connected with the tail component; the conductive tube and the insulating core body are sleeved with the hollow composite insulator, one end of the hollow composite insulator is connected with the head assembly, the other end of the hollow composite insulator is connected with the middle flange, and the insulating core body is sleeved with the middle flange. According to the GIS outgoing line sleeve disclosed by the invention, the insulating core body is used as main insulation, so that the emission of greenhouse gases can be greatly reduced in the whole life cycle of production and use, and the environmental protection performance is better; according to the invention, the insulating core body is used as the main insulator, so that the wire outlet sleeve can be suitable for the temperature range of-60 DEG C to 120 DEG C, the applicable temperature range is wider, and the insulating property of the wire outlet sleeve is superior to that of the wire outlet sleeve taking SF6 gas as the main insulator in a low-temperature environment.

The invention discloses a fluorescent temperature measurement material, a preparation method and application thereof and a fluorescent thermometer, and relates to the technical field of luminescent materials, the chemical formula of the fluorescent temperature measurement material is Li < 1 + x > Ga < 5-x > O < 8-x >, x =-0.05-0.1, and x is not equal to 0. The fluorescent temperature measurement material provided by the invention can emit fluorescence in a blue light wave band and a red light wave band, and emission peaks of different wave bands of the fluorescent temperature measurement material have different dependency relationships on temperature changes. In the range of 220-360 K, along with the rise of the temperature, the fluorescence intensity of the blue light wave band is gradually weakened, and the fluorescence intensity of the red light wave band is gradually enhanced, so that the temperature in the range of 220-360 K can be measured according to the fluorescence intensity ratio of the two wave bands, and the relative sensitivity exceeds 4% K <-1 >. The fluorescent temperature measurement material is a ratio type fluorescent temperature measurement material, and is high in sensitivity, wide in applicable temperature range and good in stability when being used for temperature measurement.

The utility model relates to the technical field of floors, in particular to a damp-proof and deformation-resistant composite floor which comprises a base plate, a nano ceramic coating is arranged on the outer side of the base plate, the top of the lower nano ceramic coating is fixedly connected with the bottom of the base plate, the top of the upper nano ceramic coating is fixedly connected with a composite silicate coating layer, and the composite silicate coating layer is fixedly connected with the bottom of the base plate. And a moisture-proof structure is arranged on one side of the composite silicate coating layer. Through cooperation of the base plate and the moisture-proof structure, when the device is used, the first waterproof layer is a polyurethane waterproof coating, the polyurethane waterproof coating has the characteristics of high-strength tear resistance and good elasticity, weather resistance, oil resistance, wear resistance, ozone resistance and acid and alkali corrosion resistance, and the second waterproof layer is a silicone rubber waterproof coating, so that the waterproof layer is not prone to falling off. The silicone rubber waterproof coating has good waterproofness, permeability, film-forming property, elasticity, cohesiveness and extensibility, so that dual waterproofness of the floor is facilitated, and the moisture-proof and deformation-resistant effects of the floor are further improved.

The embodiment of the utility model provides a shaft sleeve, a shaft body kit and tufting equipment. The shaft sleeve comprises a connecting part and a deformation part, the connecting part is provided with a mounting hole, the mounting hole penetrates through the two opposite sides of the connecting part in the first direction, the shaft body penetrates through the mounting hole, and the radial size of the mounting hole is larger than that of the shaft body. The deformation part is connected to the connecting part, has flexibility or elasticity and is used for abutting against the shaft body. Wherein at least part of the deformation part is located outside the mounting hole, and the part, used for abutting against the shaft body, in the deformation part is located outside the mounting hole. According to the technical scheme, the requirement for the machining precision of the shaft body sleeve piece is lowered, the shaft body sleeve piece can operate normally, and using noise is reduced.

The invention discloses a polymer biological blocking remover and application thereof, and belongs to chemicals for oil fields. The polymer biological blocking remover is prepared from the following components in parts by weight: 0.1-5 parts of an organic acid coupling agent, 1-20 parts of a biocatalyst, 0.5-5 parts of an inducer, 0.01-5 parts of a bioactive aid and 65-98.39 parts of water. The gel breaker can rapidly degrade HPAM and related gel in a low-temperature environment of 50 DEG C or below, is high in gel breaking speed and small in dosage, and is suitable for oilfield sewage treatment and oily sludge treatment; the blocking remover does not contain dangerous components such as a strong oxidant and chlorobenzene, so that potential safety hazards such as fire, explosion, corrosion and highly toxic gas possibly caused by an oxidized blocking remover are avoided, and the blocking remover is safer and more environment-friendly; polymers are directly degraded through chemical action, and water-insoluble by-products are not generated like an oxidized blocking remover, so that secondary blocking of a stratum is effectively prevented; the product is good in stability, easy to store and transport, simple in field operation, simple in construction and suitable for large-scale application; the device is wider in applicable temperature range, lower in cost, higher in economic benefit and more beneficial to popularization and application.

The invention discloses a sintered expanded graphite shaped molten salt energy storage material and a preparation method thereof. The energy storage material is mainly formed by compounding sintered expanded graphite and fused salt, the sintered expanded graphite is a carrier of the fused salt, the mass of the sintered expanded graphite accounts for 35-45% of the total mass of the sintered expanded graphite shaped fused salt energy storage material, the mass of the fused salt accounts for 55-65% of the total mass of the sintered expanded graphite shaped fused salt energy storage material, and the fused salt is high-temperature fused salt. The high-temperature fused salt comprises one or a combination of more of sodium chloride, sodium fluoride, magnesium chloride, calcium chloride and potassium chloride, and the sintered expanded graphite is mainly prepared from a mixture of asphalt, a dispersing agent, expanded graphite and adjusting components through drying, pressure forming, drying and sintering in sequence. The adjusting component accounts for 1-5% of the total mass of the sintered expanded graphite shaped molten salt energy storage material. The sintered expanded graphite shaped molten salt provided by the invention is good in energy storage and heat conduction performance, low in heat loss, good in corrosion resistance, high in strength and capable of preventing leakage of the molten salt, so that the sintered expanded graphite shaped molten salt has good safety.

The utility model relates to the technical field of exhaust pipes, and discloses a novel composite exhaust pipe structure which comprises an exhaust pipe, an air inlet is formed in the bottom of the exhaust pipe, an air outlet is formed in the top of the exhaust pipe, an insertion groove is formed in the exhaust pipe, a filter screen is arranged on the insertion groove, and the filter screen is arranged on the insertion groove. A collecting tank is arranged on one side of the outer wall of the exhaust pipe in a communicating mode, a cleaning part is arranged in the exhaust pipe and comprises a first bearing fixedly installed on the inner wall of the exhaust pipe, a lead screw is fixedly installed on the inner wall of the first bearing, and a motor is fixedly installed at the extending end of the lead screw; the nanometer aerogel heat insulation felt is arranged on the inner wall of the exhaust pipe and installed on the inner wall of the exhaust pipe through the rivets, and therefore the exhaust pipe has the excellent characteristics of being good in flexibility, low in heat conductivity coefficient, wide in applicable temperature range, fireproof, waterproof, free of aging, capable of adsorbing, insulating sound, reducing noise, long in service life, free of powder falling, free of pungent smell at the high temperature and the like.