SU968139A1 - Floating roof for preventing evaporation of liquid in storage tanks - Google Patents

Description

The invention relates to floating coatings for the formation of protective coatings on open-end storage of liquids, in particular manure stores.

A coating of floating bodies having a cross-sectional shape, a parabolloid or an ellipsoid of rotation is known, and in terms of the shape of a circle or 1J polyhole.

The disadvantage of this coating is its high consumption of materials. ,

It is also known to have a floating coating to prevent liquid from evaporating in storages, including a polymer film 2 laid over the storage on floats.

However, the known construction has not been applied to cover the manure stores, since it is provided with openings for the release of gases that must be dispersed in the atmosphere.

The purpose of the invention is the collection and removal of sedimentary water from the surface of the coating and the dispersion in the atmosphere of gases formed under the coating.

This goal is achieved by the fact that the floats of the vessel are put into arms and arranged in parallel rows, and on two opposite edges of the storage, perpendicular to the air floats, flooded are made.

the fluid level of the catchment grooves connected by means of the catchment pipes to the receiving well, in this case, the sizes of the floats are increased towards the center of the storage, to which the gas collection manifold is connected, connected with the exhaust pipe located on the edge of the storage.

In addition, the polymer film is filled with radiation-reflecting, and along the edges has longitudinal folds. .

FIG. 1 shows the coating in the plan; in fig. 2 - the same, longitudinal view 3..

Coverage includes storage 1 s

15 by an impervious bed 2 and its protective coating 3, floating bodies 4, connected in the lines and laid in parallel rows through the storage

20 1. Between the flooded submerged level of the liquid, the catchment 5 and grooves 5. which are connected to a water intake well 7, which has a raft mounted on the raft 8 that pumps the water entering the well 7 into the well 7, are automatically maintained for operation by means of the outlet pipes 6. Through the arms of floating bodies, 4, the dimensions of which increase towards the center of the repository, are laid

Polymer film 9, which has longitudinal folds 10 along the edges, collects gases collecting manifold 11 from the center of storage 1 and is connected to exhaust pipe 12 located on edge of storage 1. 1.

Floating cover functions in the following way.

Floating bodies laid in parallel wires through storage 1 hold 4 polymeric film 9 thrown over them, which along the edges have longitudinal folds 10 to compensate for changes in liquid level in storage 1. Between the loads of floating bodies 4 sedimentary water along Bep -jj xy polymer film 9 flows into the catchment grooves 5 that are flooded below the level of the liquid and cover, of which b come into the water receiving well 7 through the water discharge pipes. In it, the pump 8 is installed on raft, pumping out water and automatically supporting ypoBe jib required for sedimentary water in the well 7 by gravity.

In cases where the coating is placed on a strongly smelling liquid, from which gases are constantly emitted, a collector 11 which 30 is connected to a chimney 12 located on the edge of the storage 1 is laid to the center of the coating under the film of coating 9. Gases and vapors along parallel rows of floating bodies 4 flow to the center of the storage facility and to collecting collector 35, connected with an exhaust pipe 12, through which they dissipate in the atmosphere.

The technical and economic efficiency of the invention consists in the savings and 40 materials needed to form a coating, compared with the known structures, in eliminating evaporation losses and in protecting the environment from contamination.

In addition, the collection of sedimentary waters from the floating surface is carried out, which under normal conditions enters storage 1, which is not always permissible.

It is most expedient to use the proposed floating coating to exclude evaporation losses from reservoirs located in the southern regions of the USSR. In these cases, a polymer film with a radiation-reflecting coating is used.

Claims (2)

1. Floating coating to prevent evaporation of liquid in storages including a polymer film laid over the storage on floats, characterized in that, for the purpose of collecting and draining sedimentary water from the surface of the coating and dispersing atmospheric gases formed under the coating, the floats are connected to heats and laid in parallel rows, and along two opposite edges of the storage, perpendicular to the bells of floats, the catchment grooves connected to the water inlet In this case, the float sizes are enlarged in the direction of the center of the storage, to which the gas collection collector is laid, which is connected with the exhaust pipe located on the edge of the chriilyshchina. i 2. The coating according to claim 1, characterized in that the polymer film is ray-reflecting, and along the edges has longitudinal folds. Sources of information taken into account in the examination 1. For France of France No. 2327816, cl. B 01 J 1/18, 1977. 2. Forward Germany No. 2536548, cl. E 02 B 1/00, 1977.