37results about How to "Melting ice fast" patented technology

The invention provides an equipment ice melting method, device and system based on the microwave technology. The method obtains ice layer information of ice frozen equipment and determines the microwave frequency of ice melting according to the ice layer information of the ice frozen equipment and then determines an ice melting mode according to the ice layer information of the ice frozen equipment and the microwave frequency of the ice melting. The system comprises a sensing unit used to acquire the ice layer information of the ice frozen equipment; a microwave generating unit used to smoothly output high-power microwaves; a steam generating unit used to generate steam by radiation heating of a monopole oscillator antenna; ice melting unit for performing ice melting; and a control unit for performing the ice melting according to the method. The invention is suitable deicing of non-power-transmission lines, realizes jointly implementation of four types of ice-melting modes such as microwave radiation ice melting, microwave electrode ice cutting, microwave steam ice melting and microwave steam ice cutting so as to achieve safe, fast and highly-efficient electrical equipment deicing.

The invention discloses an environment-friendly ice melting agent prepared by using waste acetic acid produced in dimethyl phthalate production and a preparation method thereof. The environment-friendly ice melting agent is a liquid product, wherein the total mass percent of acetate is 10-40%, the total mass percent of sodium dihydrogen phosphate is 0.05-1%, the total mass percent of sodium silicate is 0.05-1%, the total mass percent of sodium tartrate is 0.01-0.05%, and the 0.001-0.5wt% pigment can be added in the product. The production process is simple and mainly comprises strong alkali saponification and activated carbon adsorption treatment, the corrosion inhibition component is compounded to realize the comprehensive utilization of waste acetic acid which is hard to treat. The environment-friendly ice melting agent prepared by the invention is free from extraneous odor and low in ice point, the ice melting capacity is more than 150% of that of sodium chloride, the corrosivity to the steel is less than 10% of sodium chloride, and the ice melting agent basically cannot corrode the concrete, the plurality of indexes are superior than those of the common acetate type environment-friendly ice melting product CMA at present.

An LNG gasifier water spraying system comprises an LNG gasifier, a circulation water pool, a monitor device, a controller and a spraying device. The LNG gasifier is arranged on a base. A water guide trough connected with the circulation water pool is arranged around the base. Heating devices are independently mounted on the side wall and the bottom of the circulation water pool. The monitor devicecomprises a first temperature detector on a water inlet pipe, a second temperature detector in the circulation water pool and a liquid level detector. The controller controls opening and closing of avalve and the heating devices according to transmitted temperature signals and liquid level signals. Multiple water stop layers are arranged in the middle of a heat exchange pipe set on the gasifier.Fins of heat exchange pipes are spirally distributed in different forms. By means of the LNG gasifier water spraying system, heat exchange efficiency is greatly improved, the intelligent control method is adopted, the relations between water inlet heat, consumed heat, the water quantity and electric energy are balanced, natural water heat energy is utilized to the greatest extent, meanwhile, normal use is not influenced, automatic control can be achieved, and control precision is high.

The invention relates to a high voltage large power resonance frequency conversion deicing device and method which is capable of improving the frequency of a line loading circuit from an industrial frequency of 50Hz to 1000-1800Hz according to the principle that a lead wire generates skin effects under a high frequency situation, and the resistance of the corresponding line is increased by about 5 times, the current transmitted by the line under the condition of a same deicing power is reduced, so as to reduce the overcurrent hardness of the line; the principle of LC series resonance is simultaneously utilized by connecting a resonance capacitor reaction at the connection position of a power electric frequency conversion device and the line to lead the equivalent inductance of the power electric frequency conversion device and the line, thus realizing series resonance under the current of 1000 to 1800Hz. In order to realize series resonance between the equivalent inductance of a line under the situation with incorrect line data and the series capacitor, a self adaptive frequency adjusting technique is adopted in the invention to lead the line to be operated at a resonance point. The device of the invention is suitable for deicing three-phase and single-phase lines; a constant current control method can ensure the stability of deicing; an advanced phase-split control method canensure the device to be suitable for the simultaneous deicing of the three-phase line with different parameters.