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74results about How to "Quick deicing" patented technology

High-transmittance microwave absorption light window with electrically controlled and adjustable reflection frequency band

ActiveCN112332100AImprove microwave absorption performanceSolve the problem of poor frequency selection characteristicsAntennasOptical elementsTransmittancePhase-change material
The invention discloses a high-transmittance microwave absorption light window with an electrically controlled and adjustable reflection frequency band, and belongs to the field of optical transparentelectromagnetic shielding and microwave communication. The light window is formed by assembling a graphene layer, a transparent dielectric layer A, an electronic control adjustable frequency selective surface layer integrated with a phase change material, a transparent dielectric layer B and a metal mesh layer which are sequentially overlapped and arranged in parallel. The electronic control adjustable frequency selective surface layer of the integrated phase change material is composed of a frequency selective surface of the integrated phase change material, a metal electrode and a lead. Thefrequency selective surface of the integrated phase-change material is formed by periodically and closely connecting and arranging frequency selective surface array units of the integrated phase-change material, wherein the frequency selective surface array units are composed of a grid mesh aperture type frequency selective surface, a grid mesh patch type frequency selective surface and tiny phase-change material patches. The invention solves the problem that the existing microwave reflector is difficult to realize high optical transparency, adjustable reflection frequency band and out-of-band rejection of the reflection frequency band at the same time so as to mainly realize absorption.
Owner:HARBIN INST OF TECH

Vehicle front window electric heating device and method for deicing by means of electric heating device

The invention relates to a vehicle front window electric heating device and a method for deicing by means of the electric heating device. Electric heating wires of front window glass are separated to form a plurality of heating areas with the same resistance value, and the electric heating wire of each heating area is led out through a bus and is connected with an external power supply. The electric heating device is further provided with a temperature controller and an extremely-cold mode starting switch, the temperature controller is used for sensing the temperature of the front window glass, the temperature controller and the extremely-cold mode starting switch are connected with the buses of the heating areas through a series-parallel connection conversion control circuit, and accordingly series-parallel connection state conversion of the electric heating wires of the heating areas is achieved. Double-power heating is carried out on the front window glass, normal power is adopted on a normal low-temperature situation, power for an extremely-cold situation is switched to on an extremely cold situation, quick deicing and defrosting are achieved, the defect that single heating power cannot cope with environment temperature changes is avoided, and meanwhile, the situation that when temperature is high, the glass is damaged due to a single large-power heating mode can be avoided.
Owner:CRRC QINGDAO SIFANG CO LTD

Power transmission line icing monitoring management system

The invention discloses a power transmission line icing monitoring and management system. The system comprises a camera, an identification and comparison unit, a database, a processor, a monitoring unit, an analysis and prediction unit, an auxiliary judgment unit and a sending unit, wherein the camera is used for acquiring the state of the power transmission line in real time, automatically acquiring the image information, transmitting the image information to an identification and comparison unit, the record image information of the power transmission line and corresponding power transmissionline information are stored in the database, the identification and comparison unit acquires the recorded image information from a database, and the data is compared with the identification and comparison unit. The system is advantaged in that through the arrangement of the auxiliary unit, the icing volume of each time is calculated according to the actual diameter of the image power transmissionline, and the overall icing volume at the deicing time point is calculated according to the arrangement of the auxiliary unit and the deicing time point, so a worker can conveniently and quickly deice, the deicing effect is improved, the manual estimation time is saved, and working efficiency is improved.
Owner:ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER

Sectional type defrosting air conditioner and sectional type defrosting method

InactiveCN112815586AImplement segmented de-icing technologyPrecision deicingMechanical apparatusCorrosion preventionHeat transmissionAir temperature
The invention provides a sectional type defrosting air conditioner and a sectional type defrosting method. The sectional type defrosting air conditioner comprises an outdoor unit, deicing valves and a compressor, temperature detection equipment is arranged in the outdoor unit, and the top, the middle and the bottom of the outdoor unit communicate with the compressor through the deicing valves correspondingly; and the deicing valves determine whether to be opened or not according to the temperature detected by the temperature detection equipment. The sectional type deicing technology of forward circulation of an air-cooled heat pump is effectively achieved through the sectional type defrosting air conditioner, stable heating is guaranteed, meanwhile, the threshold value is intelligently and automatically adjusted in combination with the air temperature, and accuracy and reliability are achieved; multi-flow-path rapid switching control is carried out, according to different deicing requirements, control output is carried out in a sectional manner, a heat transmission area and an effective heat exchange area are controlled, and accurate forward circulation defrosting and deicing are achieved; efficient intelligent identification and control judgment are achieved, and deicing is fast; and the scheme can be popularized to all use of the machine type.
Owner:GREE ELECTRICHEFEI +1

Assembly type blowing system special for online repair of cold insulation structure and suitable for various pipe diameters

PendingCN110630904AFlexible adjustment of ring diameterAdjust ring sizeSpray nozzlesPipe elementsOrganic solventPipe fitting
The invention discloses an assembly type blowing system special for online repair of a cold insulation structure and suitable for various pipe diameters. The blowing system comprises a blowing tool. The blowing tool comprises a plurality of sets of blowing assemblies. Each set of blowing assembly comprises a circular-arc-shaped pipe fitting formed by a metal hose, wherein the circular-arc-shaped pipe fitting is provided with a plurality of diverters, braches of the diverters are connected with metal connection hoses correspondingly, and the other ends of the metal connection hoses are connected with blowing nozzles. After communicating, the multiple circular-arc-shaped pipe fittings communicate with a pipeline through a handle, and the pipeline communicates with an air source. The blowingsystem is easy and convenient to assemble, flexible in adjustment, convenient to control and suitable for to-be-repaired pipelines of various pipe diameters, operation convenience of the tool is improved, meanwhile, an integrated atomization device is arranged, an organic solvent is introduced, and thorough and fast defrosting and deicing are achieved in the blowing process. The blowing system isnot only suitable for LNG pipelines but also suitable for other low-temperature pipelines and devices and can be used and popularized in other low-temperature cryogenic fields.
Owner:CNOOC GAS & POWER GRP

Environmentally-friendly deicing agent and preparation method thereof

The invention discloses an environmentally-friendly deicing agent and a preparation method thereof. The environmentally-friendly deicing agent comprises, by weight, 50-100 parts of ethanol, 30-60 parts of glycol, 20-30 parts of sodium carbonate, 10-20 parts of sodium acetate, 5-10 parts of magnesium acetate tetrahydrate, 5-10 parts of ammonium oxalate, 5-10 parts of calcium bicarbonate, 3-5 parts of sodium hypophosphite, 3-5 parts of ammonium biphosphate and a proper amount of water. The preparation method comprises the following steps of crushing the solid raw materials, carrying out sieving so that the sieved raw material particles have the sizes less than or equal to 8mm, weighing the raw material particles according to the above ratio, carrying out stirring by a mixer to obtain a uniform mixture, carrying out weighing and carrying out split charging. The environmentally-friendly deicing agent has good deicing effects. The raw materials can absorb moisture and hydrolyze thereby releasing heat so that the thawed ice water is not frozen easily. The environmentally-friendly deicing agent does not produce corrosion and pollution and is healthy, environmentally-friendly and safe. The preparation method has simple processes, a moderate cost, is suitable for popularization and industrial production and has good benefits.
Owner:王富善

Thermal insulation type automatic snow removal runway

The invention discloses a thermal insulation type automatic snow removal runway which comprises a pouring bottom layer used for road paving, wherein a thermal insulation layer covers the pouring bottom layer; heating pipes are arranged on the thermal insulation layer in a paving manner; a concrete layer covers the heating pipes; two sides of the concrete layer are simultaneously hinged with a thermal insulation cover plate; an electric turning-over transmission mechanism which can drive the thermal insulation cover plate to turn-over is respectively arranged on a hinged shaft of each thermal insulation cover plate on two sides; the thermal insulation cover plates on two sides can rotate to the opposite sides under drive of the electric turning-over transmission mechanism; and when the thermal insulation cover plates turn in place, the thermal insulation cover plates on the two sides form a completely closed whole. By adoption of the structure, a pavement is heated through the embedded heating pipes, the aim of rapidly deicing is fulfilled, and when snow covers a road or an airfield runway, the thermal insulation cover plates can be turned over to the two sides of the concrete layer, so that airplanes or other means of transport can directly travel on the pavement of the concrete layer; and due to the arrangement, the snow covering the pavement can be rapidly cleaned, and the cleaning effect is good.
Owner:GUIPING PRODIVITY PROMOTION CENT
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