SU1294397A1 - Method of cleaning inner surfaces of tubular spaces - Google Patents

Description

The invention relates to a technique for cleaning hollow articles from contamination and can be used in various sectors of the national economy.

The purpose of the invention. - increase production-5 furnace movement along the collector

water productivity due to simultaneous cleaning of several pipes.

FIG. 1 shows an apparatus for carrying out the method; FIG. 2 is a view A of FIG. 1, in FIG. 3 shows a section BB in FIG. one,

The method is carried out as follows.

The pipes to be cleaned are connected to the ring collector, and the washing liquid is fed tangentially into the collector to unwind it to form a film, which is pressed into the pipes by compressed gas. Thus, a gas-liquid mixture is formed in the pipes being cleaned, removing contaminants from their inner surface. Spin the fluid in the reservoir can be accomplished with compressed gas supplied to the reservoir tangentially to its axis. In addition, in order to increase the efficiency of purification, additional portions of gas are pulsed in a continuous flow of gas.

The annular collector has an annular cavity 1 into which the pipes 2 and 3 are tangentially inserted to supply washing liquid and gas. Circular cavity circumference

It has a number of openings, to which among-35 liquid and compressed gas, about t

The cleaners 5 are connected by means of adapters 4. The holes in the annular manifold can be located both in its lower part (Fig. 2) and along the periphery radially (Fig. 1). The washing liquid is fed into the annular cavity of the manifold through the nozzle 2, and the gas through the nozzle 3. The liquid twists in the ring collector and an annular film forms on its inner surface, an additional spin of the liquid flow by gas (along arrow I) is possible by installing swirlers in the nozzle 3 or turning the nozzle 3 relative to the vertical Flax axis. Through the holes in the annular manifold gas pushes washing liquid into dust

129А397

would be 5,

2

in which an annular flow regime of a gas-liquid mixture is formed.

To evenly distribute the liquid and gas in the pipes being cleaned

five

.

0

five

portions of fluid flowing per unit of time through the hole in the cleaned pipe, more than one turn. Adjusting the frequency of rotation of the fluid in the annular manifold can be accomplished by varying the gas content. If the film of liquid during the expiration of the cleaned pipes makes less than one revolution along the annular collector, then the liquid will not flow into the latter in the direction of its movement of the pipe. Only gas will flow into these pipes and pipe cleaning will be uneven.

The invention will improve productivity by simultaneously cleaning several pipes. At the same time, the pipes are cleaned efficiently with a gas-liquid mixture. The method is simple to implement, as it does not require complex switchgear.

Formula inventions

Claims (3)

1. A method for cleaning the inner surface of tubular cavities, comprising supplying a gas-liquid stream to the pipes, formed by a detergent mixture l and the fact that, in order to increase productivity, we clean; The cavities are connected to the annular manifold, and the washing liquid is fed tangentially into the manifold to unwind it to form an annular film, followed by pushing the film into the pipes with compressed gas. 2. The method according to claim 1, characterized by the fact that the liquid is twisted in the collector by means of compressed gas blown into the collector tangentially to its axis. 3. Method according to paragraphs. 1 and 2, which is based on the fact that additional portions of gas are pulsed in a constant gas flow. Vida t (PU2.2 Compiled by V.Slshkin Editor S.Pekar Tehred; V.Kadar Proofreader M.Demchik Order 412/5 Circulation 542Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 .J