SU1280298A1 - Agitating device - Google Patents

Abstract

The invention relates to the field of heat exchange equipment and can be used in recuperators, which increase the efficiency of furnaces and other heat-using installations. The purpose of the invention is the intensification of heat transfer. The blade apparatus is made ring-shaped and is surrounded by a large end face in the direction of the incoming coolant flow. Its blades 3 are placed between two conical surfaces coaxial with shaft 2. On the larger end, they are connected by a ring 4, and on the smaller side by a disk 5 mounted on shaft 2. The heat transfer medium hits the boundary layer of the inner wall of the pipe 1 and moves in a vortex manner along a helix along it, which increases the coefficient. heat transfer. The device allows you to get away from the fan, which saves production space. 2 Il. (L

Description

The invention relates to heat exchange engineering and can be used in the energy industry, in particular, in recuperators, which increase the efficiency of furnaces and other heat-using installations. The purpose of the invention is to intensify heat transfer.

FIG. 1 schematically shows a turbulizing device, a longitudinal section; FIG. 2 is a section A-A in FIG. one,

The turbulizing device installed in the heat exchange pipe 1 contains a rotor in the form of a shaft 2 with a blade apparatus, the blades 3 of which are placed between two conical surfaces coaxial with the shaft 2, and are connected by a ring 4 from the side of the larger end, and a disk 5 , fixed on the shaft 2. The pipe 1 is equipped with fins 6.

Shaft 2 with blade units

25 can be driven to rotate; the blade unit is made with an annular gage mounted outside pipe 1,

and its blades are placed between two conical surfaces coaxial with the shaft, and from the side of the larger end face are connected by a ring, and from the smaller side - by a disk fixed on the shaft, with the blade device facing the incoming heat carrier flux.

or under the action of the energy of the moving coolant, Depending on the length of the pipe and the number of blades: apparatus 2 shaft can be cantilevered or with additional supports,

Turbulling device operates as follows.

five

0

When the shaft 2 rotates from the engine, the blade apparatus with blades 3 rotates. The coolant in the pipe 1 moves through the blade apparatus, twists with it and goes out in the direction of the inner wall of the tube 1. Striking the boundary layer, the flow of the coolant disrupts it and moves along a helical line along pipe walls, turbulizing the flow in this zone, which increases the heat transfer coefficient. Flue gases with high temperature wash the outer wall of the pipe 1.

Claims (1)

Invention Formula A turbulizing device for a heat exchange tube comprising a rotor in the form of a shaft in the flow of heat-transfer fluid in the form of a shaft with a blade apparatus, characterized in that. in order to intensify heat transfer. blade apparatus is made ring and its blades are placed between two conical surfaces coaxial with the shaft, and from the side of the larger end face are connected by a ring, and from the smaller side - by a disk fixed on the shaft, with the blade device facing the incoming heat carrier flux. Editor A, Ogar . Compiled by And Atmanov Tehred I.Popovich Proofreader A, Obruchar Order 7046/38 Circulation 589 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Design, 4. Subscription