Heat-exchanger

FIELD: heat-exchanging equipment, particularly for machine-tool, chemical, power and other industries to cool process medium.

SUBSTANCE: heat-exchanger comprises cylindrical body with flat closures and removable radiator made as two coaxially arranged coils. Coil ends are fastened to orifices formed in flat closures through boss-like tube plates. Heat-exchanger also has inlet and outlet pipes adapted to supply and discharge working medium. The body is divided into two cavities by partition having central orifice. Installed in the orifice is tube transmitting liquid to be cooled from one cavity into another one and extending along heat-exchanger axis. Coils are arranged in different cavities in opposition one to another. Tube plates of each coil are installed in orifices of one closure. Orifices for inlet and outlet pipes are formed in different cavities near the partition. Cooling medium supply to coils and discharge from the coils in both cavities is carried out trough T-branches installed on tube plates of one of the closures and through kneepieces connected to tube plates of another closure.

EFFECT: increased efficiency of heat removal.

2 dwg

 

The invention relates to heat exchange apparatus and can be used in machine tool, chemical, energy and other industries for cooling technical environments (oil - in hydraulic, lubrication and coolant in the machines and automatic lines, cleaning and electroplating solutions, tap water, as well as in cooling systems of thermal engines power plants.

A known heat exchanger containing cylindrical body with openings for inlet and outlet of the coolant, the coil, the ends of which are fixed in the holes of one of the end flanges and pipe to drain coolant (Avrutin RD Handbook of hydraulic cutting machines. M: mechanical engineering, 1965, SCR-211. RIS).

The closest in technical essence to the claimed technical solution is a heat exchanger containing a cylindrical housing with a flat lids. removable cooler, made in the form of two coaxially mounted coils, the ends of which are fixed in the holes of flat caps with tube plates in the form of bosses, and pipes for supplying and discharging working fluid (RF Patent No. 1312360, CL IPC. F 28 D 7/02, 1986). This heat exchanger is adopted us for the base model.

The disadvantage of the heat exchanger in the baseline sample is low now is th dissipation due to the relatively small heat exchange surface.

Technical solution aimed at improving the efficiency of heat dissipation.

To solve the problem of the heat exchanger containing a cylindrical housing with a flat lid, removable cooler, made in the form of two coaxially mounted coils, the ends of which are fixed in the holes of flat caps with tube plates in the form of bosses, and pipes for supplying and discharging the working environment, have a structure that is divided into two cavities by a partition, in the Central hole of which along the axis of the heat exchanger is installed pipe to exhaust cooling fluid from one cavity to another, the coils are installed in different cavities opposite to each other, and the tube plate for the ends of the tubes of each coil is installed in the hole in one cover. Holes for installation of pipes for supplying and discharging the cooled liquid made in different cavities near the wall, thus the supply and discharge of the cooling medium to the coils of both cavities through tees installed on the tube plate of one of the caps and elbows placed on the tube plate of the other cover,

Figure 1 shows a General view of the inventive heat exchanger.

Figure 2 - one of the variants of connection of the heat exchanger. The heat exchanger comprises a cylindrical housing 1, is divided into two cavities 2 and 3 partition 4, the Central is Tertii which the axis of the heat exchanger is installed pipe 5 for removal of the cooled fluid from the cavity 2 cavity 3. Removable radiator is made in the form of two coils 6 and 7 of fin tubes, which are mounted on the Central tube 5 opposite to each other in different cavities of the housing 1. The ends of the coils 6 and 7 are fixed in the holes of flat caps 8 and 9 with tube plates 10, 11, 12 and 13 in the form of lugs, and the lugs to the ends of the tubes of each of the coils inserted in the holes of the cover, corresponding to the coil cavity, for example lugs 10 and 11 are installed in the holes of the cover 8. In the housing 1 is made holes for installation of pipes 14 and 15 for supplying and discharging the cooled liquid bone, made in different cavities near the partition wall 4, thus the supply and discharge of the cooling medium to the coils of both cavities is carried out through the tee 16 and 17 mounted on the tube plate of one of the caps on the drawings on the cover 8, and the angles 18 and 19 arranged on the tube plate of the other of the cover 9, i.e. one-sided connection of the cooling medium are connected between a supply holes 10 and 12, as well as drainage holes 11 and 13.

The heat exchanger works as follows,

Cooled high-temperature environment, such as oil, under pressure through the inlet with the nozzle 14 is fed into the annulus cavity 2, is washed by the coil 6 of the radiator of the finned tubes and cooled, is displayed through the Central pipe 5 into the tube about transto cavity 3. Washing the coil 7 of the radiator, a high-temperature environment is cooled again and excreted through the hole with the outlet 15 of the housing 1.

The cooling medium, for example water, is supplied to the coil 6 through the tee 16 and the boss 10, and the coil 7 through the tee 16, the brackets 18, the boss 12, is distributed over the heat exchange tubes of the coils 6 and 7, is heated and is removed from the coil 7 through the boss 13, the brackets 19, the tee 17 and the coil 6 through the boss 11 and the tee 16. keeping warm.

In the inventive heat exchanger with small dimensions, the efficiency of heat transfer is increased by 40-50 percent with an embodiment of the casing of the two cavities, which allows for the Central tube set into each cavity of the removable radiators of finned tubes, increasing the heat exchange surface and cooling the high-temperature environment twice.

Improving thermal performance of the heat exchanger affects the health and increases the efficiency of operation of technological equipment.

A heat exchanger containing a cylindrical housing with a flat lid, removable cooler, made in the form of two coaxially mounted coils, the ends of which are fixed in the holes of flat caps with tube plates in the form of bosses, and pipes for supplying and discharging working medium, characterized in that the housing is divided into two bands and the partition, in the Central hole of which along the axis of the heat exchanger is installed pipe to exhaust cooling fluid from one cavity to another, the coils are installed in different cavities opposite to each other, and the tube plate for the ends of the tubes of each coil are installed in the holes of one plate, holes for installation of pipes for supplying and discharging the cooled liquid made in different cavities near the wall, thus the supply and discharge ogledala environment to the coils of both cavities through tees installed on the tube plate of one of the caps and elbows placed on the tube plate of the other cover.



 

Same patents:

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