RU2075995C1 - Centrifugal separator - Google Patents

Abstract

FIELD: clearing gasses from dust and moisture. SUBSTANCE: centrifugal separator coaxially mounted chamber of purifying gas feeding with tangential inlet branch pipe, upper, lower and additional half-cylinders, that form separating zone, branch pipe of purified gas removal and bunker - dust and moisture collector. Diameter of upper half-cylinder is bigger, than diameter of lower one. Additional half-cylinder has smaller diameter, than diameter of lower half-cylinder and it is mounted coaxially to half-cylinders of smaller and bigger diameters and is connected with branch pipe of purified gas removal. EFFECT: increased effectiveness of separator operation. 3 dwg

Description

 The invention relates to devices for gas purification and may find application in various industries, in particular in compressor engineering. A known centrifugal separator containing coaxially mounted purge gas inlet chamber with a tangential inlet pipe, a purified gas outlet pipe and a cylindrical separation zone consisting of upper and lower half-cylinders of various diameters, a dust-and-moisture bin. The separation chamber is placed in the dust-moisture bin, while the upper half-cylinder is made of a larger diameter, and the lower one is smaller. The input chamber and the output pipe have a diameter equal to the diameter of the lower half cylinder, and are attached to it.

 The disadvantage of the separator is the low efficiency of the separator, especially in off-design operating modes. This is due to the fact that the gas leaving the separation zone and returning to it at the end of the separation zone does not have time to be re-separated and, mixed with the purified gas, enters the pneumatic system further. In addition, a significant part of the film (oil particles, moisture, dust) formed on the walls of the input chamber and entering the inner surface of the smaller half-cylinder of the separation chamber does not have time to leave it and also goes on to the pneumatic system.

 The essence of the invention lies in the fact that in a centrifugal separator containing a coaxially mounted purge gas inlet chamber with a tangential inlet pipe, a clean gas outlet pipe, a dust and water collector, half-cylinders of larger and smaller diameters forming a separation zone, the upper half-cylinder being made of a larger diameter, and the lower one, namely in its separation zone, coaxially with the half-cylinders of the larger and smaller diameter, an additional half-cylinder made of a smaller diameter is installed than the lower half cylinder, and connected to the outlet pipe of the purified gas.

 The technical result of the invention increases the efficiency of the centrifugal separator in a wide range of changes in the flow rate of purified gas by providing additional separation in the chamber formed by the additional and lower half cylinders, as well as by completely eliminating the ingress of film into the outlet pipe of the purified gas.

 In FIG. 1 shows a centrifugal separator, a longitudinal section; in FIG. 2, section AA in FIG. one; in FIG. 3 cross-section BB of the input chamber of the gas to be purified (gas movement by arrows is indicated in the drawing).

 The centrifugal separator contains a coaxially mounted purge gas inlet chamber 1 with a tangential inlet pipe, an upper half cylinder 2 of the largest diameter, a lower half cylinder 3 of the average largest diameter and an additional half cylinder 4 of the smallest diameter, forming a separation zone, a purified gas outlet pipe 5, a dust-collecting bin 6.

 The upper half cylinder 2 is made of a larger diameter, the lower half cylinder 3 is of a smaller diameter and is connected to the input chamber of the gas to be cleaned 1. A slot 7 is made in the lower half cylinder 3 to remove accumulated condensate. In the separation zone, coaxially with half-cylinders 2 and 3 of larger and smaller diameters, an additional half-cylinder 4 is made, made of a smaller diameter than the lower half-cylinder 3. The half-cylinder 4 is connected to the outlet of the purified gas 5. Half-cylinders 2, 3, 4 are placed in the casing of the dust bin 6 .

 The separator works as follows.

 A gas containing particles of a liquid or a solid phase enters through a tangential inlet pipe and a chamber for introducing the gas to be cleaned 1 into the separation zone and moves in it in a spiral. Under the action of centrifugal forces, the particles contained in the gas are collected in the form of a film on the inner surface of the input chamber of the gas to be cleaned 1 and the half cylinder 3 and removed from the separation zone through the slot 7 and through the gap formed by the surfaces of the half cylinders 2 and 3. The gas leaving the separation zone, returns through the gap formed by the surfaces of the half-cylinders 2 and 3 and is separated in the channel formed by the half-cylinders 2 and 4, and then again in the separation chamber formed by the half-cylinders 3 and 4. Thus, the gas undergoes "double "Separation film and completely excluded from entering the purified gas outlet tube.

 The proposed separator improves the efficiency of gas purification.

Claims (1)

 A centrifugal separator comprising a coaxially mounted purge gas inlet chamber with a tangential inlet nozzle, a purified gas outlet nozzle, a dust and water hopper, half-cylinders of larger and smaller diameters forming a separation zone, with the upper half-cylinder made of a larger diameter and the lower one smaller, characterized in that in the separation zone, coaxially with the half-cylinders of larger and smaller diameters, an additional half-cylinder is installed, made of a smaller diameter than the lower half-cylinder, and is connected ny with the outlet pipe of the purified gas.

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