SU994890A2 - Surface condenser - Google Patents

Description

(54) SURFACE-OUT CAPACITOR

The invention relates to heat exchangers and can be used in the chemical and petrochemical industries.

According to the main auth. No. 706670 is a surface condenser, comprising a housing with an upper and a lower one, with its water chambers; a vertical bundle of tubes installed in tube plates, around which there are coaxially 6 gaps between their ends, the top and bottom tube plates, and the shells are located. The condenser is provided with cylindrical bushings, the lower ends of the inner tubes are inserted into the pipes, the upper ends are inserted into the upper water chamber, and spiral winding tl} is made at the lower ends of the bushings.

However, i a known condenser does not have & a high intensification of the heat exchange process due to the limited velocities of the coolant — in the annular space, since the vapor – gas mixture leaving the annular channels moves in the form of jets, resulting in a flow rate of the mixture {more than 10 m / s) there may be a gradual destruction of the tube plate under the Action of the jets, as well as difficult

constructive implementation and increase in metsyshoemosti.

The purpose of the invention is to intensify heat transfer.

This goal is achieved by the fact that on the side surface of the sleeve from the end of the helix opposite to its end face, which is attached to the tube plate, the profile guide is fixed to the blade - blade.

Moreover, the pipes in the middle part have a larger diameter compared to the tops, the blade is located at the site of changing the diameters of the parts

15 pipes and the surface of the equidistant blade to the pipe profile of this area.

FIG. 1 shows a capacitor, longitudinal section; in fig. 2 — node I in FIG. one.

20

Condenser Contains case 1, upper 2 and lower 3 water chambers, respectively, vertical pipes 4, fixed in the upper - 5 and lower 6 tube plates of the type

25 obchayki 7, cylindrical bushings 8, equipped with a spiral winding 9, the profile guide element - the blade 10, the conical transitions 11, the fittings of the inlet 12 and outlet 13 steam

Claims (2)

30 gas mixture, respectively, fittings Knst supply 14 and coolant outlet 15, respectively, fitting 16 for condensate drainage. The capacitor works as follows. The cooling fluid flows through the fitting 13 into the upper chamber 2 and, through the spiral channels between the cylindrical sleeves 8 with the spiral-shaped winding 9 and the pipes 4, the liquid flows into the blade 10, which tangentially moves to the walls of the conical transition 11 from which first in the form of a swirling, and then in the form of a flowing film, the liquid moves along the inner walls of the vertical pipes 4. The heated liquid enters the lower chamber 3 and through the fitting 15 is withdrawn from the condenser. In the annular space through the nozzle 12 steam-gas mixture is purchased. The gas-vapor mixture is equally distributed over the cross section of the apparatus and then enters the annular space, in which the velocity of the mixture increases significantly. In the process of cooling the gas-vapor mixture, condensate is formed, which partially flows along the outer walls of the vertical pipes 4, and the rest is carried with the gas-vapor mixture into the space formed by the ends of the pipes, where it is separated from the gas-vapor mixture, due to a sharp decrease in the velocity of the gas; and discharged from the condenser through the fitting 16. The cooled vapor-gas mixture is discharged from the condenser through the fitting 13. Thus, in the proposed condenser, the heat exchange process is intensified by increasing the rates of the heat exchanging media. In addition, it has a simplified design and reduced metal content. Claims of the invention 1. Surface condenser according to author. No. 706670, which means that, in order to intensify heat transfer, a profile guide element - a blade - is fixed on the side surface of the sleeve from the end of the helix opposite to its end, adjacent to the tube plate. 2. A condenser according to claim 1, characterized in that the tubes in the middle part have a larger diameter as compared to the ends, and the blade is located on the 5th part of the change in the diameters of the pipe parts, the surface of the blade equidistant to the profile of the pipe of this section. Sources of information taken into account in the examination 1. USSR author's certificate 706670, cl. In 1/02, 1978. Fvf.f fug,