RU2307889C2 - Method for rigid aerodrome and motor road paving cleaning of snow and ice blanket - Google Patents

Abstract

FIELD: deicing equipment for paving deicing.

SUBSTANCE: method involves using high-power infrared radiation source in ice optical density of 9.6-10.3 μm, wherein the infrared radiation is emitted by continuous radiation generator having 240-270 kW/cm² power, which generates non-focused beam with approximate diameter of 5-8 cm to heat paving surface within t≈0.001 c and to break adhesive bonds in ice blanket; removing ice blanket fragments to prevent secondary freezing thereof on paving surface.

EFFECT: increased efficiency and provision of trouble-free vehicle passage.

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Description

The present invention relates to methods for cleaning hard airfield and road surfaces from snow-ice formations and can be used in practice as a basis for the development and construction of various devices for removing ice from hard airfield and road surfaces.

Along with well-known methods of removing snow-ice formations, such as thermal, chemical, mechanical, there is a known method of cleaning airfield and road surfaces from snow-ice formations using liquid chemicals with the simultaneous effect of ultrasonic radiation on ice deposits [1]. The main disadvantage of this method can be considered the harmful effects of a chemical reagent on the coating material, leading to a deterioration in its physical and mechanical characteristics.

There is also a way to deal with ice formations on coatings using the combined effects of thermal and ultrasonic energy [2]. The disadvantage of this method is the undesirable destruction of the upper coating layer and the melting of the sealing material of expansion joints, the possible destruction of the coating under the influence of powerful ultrasonic radiation, the difficulty of ensuring reliable contact between the emitter and the coating surface.

The closest in technical essence and the achieved result to the proposed one is a method of cleaning airfield and road surfaces from snow-ice formations using devices using light-hydraulic shock [3]. The disadvantage of this method is the limitation associated with the occurrence of intense shock load, uncontrolled at the time of radiation by a quantum generator. Due to the presence of a focusing system and as a result of a high energy concentration, a situation of the formation of craters on the coating surface is possible. Due to the difficulty of focusing at the indicated height, the layer of snow-ice formations is not completely separated, thereby not eliminating the threat of aircraft slipping over the coating. The use of a pulsed quantum generator leads to an uneven separation of ice deposits along the length. Due to the high sensitivity of the focusing system to vibration, it is difficult to remove ice deposits from an uneven surface, and the use of pulse generators with a high pulse frequency (up to 100-200 Hz) allows a speed of not more than 1 km / h, which does not provide operational performance.

The essence of the proposed method is that to remove snow-ice formations, a powerful source of infrared radiation is used in the optical transparency range of water - ice 9.6-10.3 microns emitted by a coherent continuous radiation generator with a power of 240-270 kW / cm ² [4 ]. An unfocused beam of coherent radiation with a diameter of approximately 5-8 cm, deployed in space, heats the surface of the airfield coating or road for a short period of time t≈0.01s with melting of the lower layer until the snow-ice formation is separated from the coating, which is then removed mechanically to prevent subsequent freezing.

The technical result of the proposed method is the high-quality separation of snow-ice formations from the coating while ensuring trouble-free operation of vehicles in the winter.

The drawing shows a block diagram for implementing the proposed method, where 1 is a coherent quantum generator of continuous operation, 2 is the beam sweep angle, 3 is the melting zone, 4 is an ice-snow formation.

Using the claimed method will provide a significant increase in productivity in the fight against snow-ice formations on the surface of a hard airfield or road surface due to the continuous exposure to an infrared ray.

Sources of information taken into account when compiling the description:

1.SU 1418391 A1, 08.23.88.

2. SU 901384 A1, 01/30/82.

3.SU 1371994 A1, 02/07/88.

4. Handbook of laser technology: TRANS. with him. - M .: Energoatomizdat, 1991 .-- 544 p.

Claims (1)

A method of cleaning hard aerodrome and road surfaces from snow-ice formations, characterized in that they use a powerful infrared radiation source in the optical transparency range of 9.6-10.3 microns ice emitted by a coherent continuous radiation generator with a power of 240-270 kW / cm ² , an unfocused beam of about 5-8 cm in diameter, deployed in space, heats the surface of the airfield and road surface in a short period of time t≈0.01s and destroys the adhesive bonds of the ice formation, which Some are then removed mechanically to prevent subsequent freezing.