FIELD: construction.
SUBSTANCE: device comprises a block of one and more bent helical pipelines joined to each other by sides and mounted in one block. The block is fixed on the way of a flow of coastal streams to change direction of some water flows, their increased speed and introduction of these flows into a water area of bays. Each helical pipeline is made as bent at the angle from 45° to 170° with a multiturn helical surface equipped with helical grooves inside and outside of the helical pipeline at the angle to its axis in the form of pockets of polygonal shape in the form of various geometric figures with four and more sides. The distance between straight lines of the bend is equal to the length of each polygon element. Pockets on internal and external surfaces may differ both in shape and dimensions along the perimetre of the helical pipeline. The pipeline is made of sections, every of which is made in the form of a circular sector, made of a strip wound into a ring with a polyhedral surface and formation of four quadrangles of different size with two parallel sides arranged in parallel to each other. At the same time the sections are connected to each other by free sides of the specified quadrangles in the form of a hollow helical pipeline.
EFFECT: efficient treatment of stagnant and contaminated water in water areas of bays due to development of permanent circulation of pure sea water inside them.
12 dwg
