RU2536508C1 - Uniflow cyclone with ribbed displacer - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: device comprises swirl vanes and a biconical displacer fitted with ribbing, the ribs are plates with axes directed along the gas movement path.

EFFECT: reduced hydraulic resistance and improved efficiency of a device, prevention of idle circulation and efficient cleaning of a gas flow.

1 dwg

Description

FIELD OF THE INVENTION

The invention relates to an industry in which the separation of solid particles from a gas stream is required.

The level of technology.

An analogue of the claimed device is the apparatus described in the Russian patent document RU 2240868 C2. The invention is intended for dust collection and may find application in air purification devices for gas turbine installations of ground use and in a number of other industries. The straight-through cyclone, consisting of a cylindrical body with a swirl at the inlet and a louver spinner at the outlet, is additionally equipped with elastic plate valves that close the windows made in the cylindrical body. The presence in the design of these valves allows you to ensure the health of the cyclone in case of ingress of foreign objects into the inlet pipe, which increases the reliability of the device.

The advantage of this device is the presence in its design of the louvre ribs, which allow additional control of the movement of gases.

The prototype of the proposed device is a utility model described in the Russian patent document RU 61156 U1, which is a straight-through cyclone containing a cylindrical body mounted on its axis of the fairing-displacer, twisting inclined blades, an axial exhaust pipe, dust extraction device, characterized in that the head of the purified gas pipe is equipped with an insulating skirt, with the possibility of preventing dust from entering the purified gas pipe from the main dust and gas stream moving along l the walls of the cyclone body, and from the dust collection chamber, while holes are made in the head of the cleaned gas pipe head or annular gaps are made between this head and the insulating skirt, with the possibility of gas ejection, which prevents the increase of back pressure in the dust extraction chamber.

The advantage of this device is the presence in its design of a biconical displacer, which allows you to profitably redistribute the flow parameters in the device.

The authors conducted a study of the kinetics of the gas stream in the apparatus with a biconical displacer, which showed the presence of a circulation stream 1 (Figure 1) in the diffuser-confuser zone. The detected stream is a parasitic phenomenon that creates additional hydraulic resistance, and this stream also violates the kinetics of the dust separation process.

Disclosure of invention

The objective of the invention is to develop a cyclone type apparatus with a biconical displacer and the ability to control stray flows.

The proposed device consists of the following parts and assemblies: a cylindrical body 2 (Fig. 1), a biconical displacer 3, twisting blades 4, a dust inlet gas inlet fitting 5, an intermediate dust extraction unit 6, a purified gas exhaust nozzle 7, dust extraction nozzles 8, a slotted clearance for intermediate dust extraction 9, finning of displacer 10.

The apparatus operates as follows: the dusty gas is supplied to the apparatus through the dusty gas inlet fitting 5, the blades 4 swirl the flow of dusty gas, during the rotational motion due to centrifugal force the dust particles move closer to the shell of the apparatus, the translational component of the movement determines the movement of masses along the shell down, as a result, the dust moves to the shell - down, and the gas to be cleaned toward the center of the apparatus - down. Dust is discharged from the apparatus to the slotted gap of intermediate selection 9 and the bottom of the apparatus through the nozzles 8. The purified gas is discharged through the nozzle 7. The parasitic stream 1 in the diffuser-confuser zone of the displacer encounters plates of ribs 10, which redirect it downwards - along - around the surface of the displacer, returning its mass to the total flow, up to the exclusion of parasitic circulation.

The exclusion of spurious circulation will reduce the hydraulic resistance of the device, increase its productivity and cleaning efficiency.

A brief description of the attached FIG. one.

In FIG. 1 shows a diagram of the proposed device in section. The ribs of the displacer 10 are conventionally indicated by the axial lines.

Claims (1)

A device for separating solid particles from a cyclone type gas with a biconical displacer and twisting blades, characterized in that the biconical displacer is equipped with fins, while the ribs are plates with axes directed along the gas path.

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