13 results about "Spontaneous heating" patented technology

This invention discloses a rapid catalyst preparation method based on high-frequency alternating magnetic field atmosphere heating, belonging to the field of rapid catalyst preparation technology, including the following steps: Step 1: Support pretreatment and precursor loading: After surface modification pretreatment of the metal support, the catalyst precursor is uniformly loaded onto the surface of the metal support using precision coating technology; Step 2: Modular coil adaptation: A suitable modular induction coil assembly is selected according to the geometry of the metal support, and the metal support loaded with the precursor is fixed in the central region of the coil. The rapid catalyst preparation method based on high-frequency alternating magnetic field atmosphere heating proposed in this invention achieves spontaneous heating inside the metal support through induction heating, without the need for external furnace contact. This not only avoids the corrosion of equipment by corrosive precursor gases, but also significantly reduces dependence on large high-temperature furnace equipment, shortens the preparation cycle, and improves the safety and economy of the process.

The invention provides a spontaneous heating composite synergist as well as a preparation method and application thereof. The spontaneous heating composite synergist is prepared from the following components in parts by weight: 20 to 40 parts of a component A, 20 to 40 parts of a component B and 30 to 40 parts of a component C, wherein the component A comprises an alkali metal salt inner core and a first silane coupling agent and aluminate coupling agent composite shell layer which coats the outer surface of the alkali metal salt inner core through chemical bonds; the component B comprises an alkaline earth metal oxide core and a second silane coupling agent shell layer which coats the outer surface of the alkaline earth metal oxide core through a chemical bond; and the component C comprises an active metal core and a third silane coupling agent shell layer coated on the outer surface of the active metal core through a chemical bond. The self-heating composite synergist is subsequently applied to in-situ gasification, in-situ dry distillation, superheated steam gasification and supercritical water gasification of deep coal and has a relatively good heat-increasing synergistic effect.

The present application relates to the field of chemical heat generating material, in particular to a built-in self-heating food heating agent and a preparation method thereof.The built-in self-heating food heating agent provided by the present application comprises a solid phase reaction agent, the solid phase reaction agent comprises 65-85 parts of magnesium powder, 10-30 parts of iron powder and 2-10 parts of modified auxiliary agent by mass fraction; a liquid phase reaction agent, the liquid phase reaction agent comprises 200-300 parts of a salt aqueous solution with a concentration of 5%-20% w / w by mass fraction.By separating the hygroscopic electrolyte salt which is easy to cause reaction from the solid phase reaction agent completely, the solution is separately packaged.The solid phase reaction agent is only a mixture of magnesium powder, iron powder and modified auxiliary agent, and is not sensitive to air humidity without contacting the salt solution, which fundamentally eliminates the internal micro-battery reaction caused by salt moisture absorption, completely eliminates the safety hazards such as spontaneous heating, bag swelling and explosion during storage and transportation, and significantly prolongs the shelf life of the product.

An energy storage spring plate comprises a single plate, and the single plate is a metal plate formed by combining a plurality of convex structures and concave structures. And the convex structures and the concave structures are continuously and repeatedly arranged. According to the energy storage spring plate, the extrusion between the convex structures and the concave structures in the single plate is mainly utilized to realize the plastic deformation of the single plate, in the deformation process, the elastic potential energy generated by the single plate realizes the self energy storage, the storage time is long, the output is diversified, the influence of the external environment temperature is avoided, and the stability and reliability are realized. The spring plate disclosed by the invention has the advantages of simple structure, no chemical action, self-heating and other defects, safety in use, low maintenance cost, and is particularly suitable for more appropriate storage of photovoltaic, wind energy and abandoned electricity of a power plant, electric energy is converted into rotational energy, then the rotational energy is converted into potential energy by a converter, and the spring plate disclosed by the invention is used for storing; potential energy can be converted into rotating energy through the converter and then converted into electric energy for use.

The invention belongs to the technical field of power equipment state monitoring, and discloses a box-type substation operation state early warning method based on multi-modal data. According to the method, infrared thermal imaging, load current and temperature permeation multi-mode data are firstly collected, complete box body internal space thermal field distribution is constructed through a heat conduction inversion and calibration technology, the thermal interaction flux between devices and the spontaneous heating power of each device are accurately calculated, and accurate evaluation of the comprehensive thermal load is achieved. According to the method, thermal stress accumulation rate calculation is innovatively introduced, the insulation residual life consumption rate is evaluated in combination with insulation material characteristics, key early warning target equipment is identified through electrical topology analysis, and finally scientific grading early warning signals are generated based on life estimated values and influence ranges in a two-dimensional mode. The method accurately quantifies the thermal state and life consumption process of the equipment, improves the accuracy and pertinence of early warning, effectively reduces the failure rate, prolongs the service life of the equipment, and improves the reliability of a power distribution system.

The invention provides an environment self-adaptive lightning arrester, and belongs to the technical field of lightning arresters, the environment self-adaptive lightning arrester comprises a core body, a wiring end and a grounding end, the outer side of the core body is provided with an isolation layer, and the outer side of the isolation layer is provided with a resistance ring; the wiring end comprises a fixing piece, a containing groove is formed in the fixing piece, the wiring end is provided with a movable conductive assembly, and connection or disconnection of a discharge path of the resistance ring is automatically controlled through environment temperature change or current induction so that self-adaptive discharge can be achieved; through the synergistic effect of the temperature-sensitive gas pressure change and the elastic piece, a discharge path is automatically adjusted, a conductive water film formed in the ice melting period under the ice and snow climate is effectively dealt with, surface flashover is prevented, meanwhile, spontaneous heating ice melting is achieved through the current heat effect of the resistance ring, and the reliability and stability of the lightning arrester in the low-temperature environment are improved.

The invention relates to a process for producing a fire protection system, comprising metering a comminuted silicon dioxide raw material and a granulated alkali metal hydroxide into a reactor; adding water in the reactor and mixing the ingredients, resulting in spontaneous heating, until a hot semifinished product is obtained; storing this semifinished product until a homogeneous colloidal aqueous dispersion (4) of the alkali metal hydrosilicate is obtained; applying the homogeneous colloidal aqueous dispersion (4) and a reinforcement (3) between a first substrate (1) and a second substrate (7); pressing or hot pressing the fire protection system into a three-dimensional shape and / or to form a rigid article. The invention additionally relates to a ready-to-use fire protection system comprising a dispersion (4) of an alkali metal hydrosilicate and at least a first substrate (1) and a second substrate (7), between which the dispersion (4) and at least one layer of a reinforcement (3) are provided, wherein the fire protection system is provided in a three-dimensional shape and / or in the form of a rigid article by pressing or hot pressing.

The utility model relates to medical technology field discloses a kind of plaster components, plaster component includes: plaster paste, including sticking layer, medicine package and heating bag, sticking layer one side is provided with first viscose layer, medicine package is bonded to the side for contacting with skin of first viscose layer, heating bag is fixedly connected with sticking layer, heating bag is filled with spontaneous heating material that contact with air and generate heat;Packaging bag, it is wrapped in the outside of plaster paste, to isolate heating bag and air.The plaster component provided by the utility model is set to heating bag, to facilitate the local temperature of skin to be increased by heat effect, be favorable to make skin pore open, enhance local blood circulation, and then make external medicine better be absorbed by skin and be used, reduce drug resource waste;And by setting packaging bag isolation heating bag and air, to prevent when not using plaster paste, spontaneous heating material in heating bag and air reaction heat generation.

A preparation method of ultra-micro carbon iron alloy material, high-carbon iron alloy blocks are pulverized, sprayed into a suspension roasting furnace in an oxygen-rich environment for spontaneous heating partial oxidation, the partially oxidized powder is cooled, and the carbon and oxygen element contents are detected, then the partially oxidized powder is mixed with un-oxidized high-carbon iron alloy powder according to the proportion, and the mixture is uniformly mixed, briquetted, and then put into a vacuum sintering furnace for deep decarburization and deoxidation, after the reaction is completed, the material in the furnace is cooled and discharged to obtain the ultra-micro carbon iron alloy material. The invention utilizes the combustible characteristics of elemental carbon and iron in high-carbon iron alloy material under certain conditions, accurately controls the decarburization and oxygenation conditions, and the material in the suspension state is not sintered, the decarburization is uniform without the need for secondary grinding, and no additional heat source is needed, thereby effectively reducing the production cost, improving the product quality, and producing the ultra-micro carbon iron alloy material after vacuum sintering.

The utility model discloses a medium-high frequency induction heating furnace with a combined heat preservation structure, which comprises a furnace shell, a graphite crucible arranged in the furnace shell, a heat preservation layer arranged on the outer side of the graphite crucible, and an induction heating coil arranged between the heat preservation layer and the furnace shell, a high-temperature porcelain pad is arranged between every two adjacent heat preservation cylinders. The heat preservation layer comprises at least two layers of heat preservation cylinders which are concentrically arranged, the sectional area of the single-layer heat preservation cylinder is reduced, the magnetic flux of the single heat preservation layer is reduced, and therefore induced current generated by the heat preservation cylinders is greatly reduced, and the risk of spontaneous heating of the heat preservation layer is reduced. The high-temperature porcelain pad is arranged between the two adjacent heat preservation cylinders, so that the two adjacent layers of heat preservation cylinders are insulated, and large current is prevented from being generated in the heat preservation cylinders.

The utility model belongs to the technical field of cold-resistant cables, and particularly relates to a cold-resistant computer cable for an intelligent oil well, which comprises a plurality of tin-coated copper wires which are twisted, and nickel-chromium alloy wires are embedded in the center of the tin-coated copper wires to form a conductor layer; the cable is sequentially provided with a conductor layer, a shielding layer, a heat storage layer, an insulating layer and a sheath layer from inside to outside. A phase change layer for absorbing heat and releasing heat is arranged in the heat storage layer, and a packaging layer for promoting heat conduction is wrapped on the outer side of the heat storage layer. According to the utility model, through the self-heating conductor, the shielding compression-resistant structure and the heat storage and release structure of the middle layer, the problems of cold resistance, oil stain resistance, interference resistance and mechanical protection of the cable in an oil well environment are comprehensively solved, and internal heat energy is fully utilized to maintain the operation temperature of the cable.

The invention discloses an asphalt concrete transport vehicle spontaneous heating and heat preservation covering film system and a control method thereof, and relates to the technical field of road construction material transportation, the asphalt concrete transport vehicle spontaneous heating and heat preservation covering film system comprises a composite film body, an energy recovery module, an intelligent control unit and a multi-source data acquisition module; the composite film body sequentially comprises a weather-proof waterproof layer, an electric heating function layer, a bionic honeycomb heat management layer and an aluminum foil reflecting layer from outside to inside. The method has the beneficial effects that through the phase change characteristic of the shape memory alloy of the bionic honeycomb heat management layer, the honeycomb units are closed to form a heat insulation air chamber in a low-temperature environment, the heat conductivity coefficient is reduced, the heat preservation efficiency is improved, and meanwhile the honeycomb units are triggered to expand in a high-temperature environment to form a vertical exhaust channel; the discharge efficiency of harmful gases such as benzopyrene is improved, and the contradiction between heat preservation and waste gas discharge is solved.