Surface heat exchanger

FIELD: heat exchange.

SUBSTANCE: heat exchanger comprises housing with front and back supporting lags of different height, lens compensator, pipe bundle with branch pipes for supplying and discharging heat-transfer agent, and front water chamber with the baffle which divides the pipe bundle into two sections. One of the sections is provided with branch pipes for supplying and discharging fluid to be heated, and the other section defines the back water chamber. The lens compensator is mounted in the vicinity of the back water chamber, and back supporting lag of the housing is provided with the additional supporting unit and mounted on the housing upstream or downstream of the lens compensator.

EFFECT: improved heat exchange and enhanced reliability.

1 dwg

 

The invention relates to the field of power engineering and can be used in the chemical and energy industries.

The known heat exchanger, comprising a housing with a tube bundle with pipe inlet and outlet coolant, front water chamber with a partition wall and pipe inlet and outlet of the heated environment, the rear water chamber (OST 108.271.105.-76. The steam-water heaters, p.8).

A disadvantage of the known heat exchanger is a horizontal arrangement of the tube bundle, which degrades the heat transfer, the inability to keep pace with the motion of the medium inside the tubes when changing consumption that contributes to the growth of deposits inside the tubes, poor heat transfer, reduce the heat capacity. Furthermore, the presence of the floating tube plate increases the weight of the device.

The known heat exchanger, comprising a housing with a tube bundle with pipe inlet and outlet coolant, front water chamber separated by two partitions into three parts with the nozzle inlet and outlet of the heated environment, the rear water chamber, divided by a partition into two parts, and a removable cover on the flange (OST 108.271.105.-76. The steam-water heaters, p.3. - Prototype).

A disadvantage of the known heat exchanger design is the complexity, the greater intensity and reduced reliability due to the presence of t is ehlanzeni connections with gaskets degraded heat transfer in horizontal arrangement of the tubes.

The inventive solution allows you to save and deliver optimum velocity of the medium in the tube bundle, to reduce the intensity and effort, to provide the necessary cooling of the fluid in reduced dimensions, which leads to improved heat transfer enhancement of heat capacity, stability deaerators, reliability and increase the turnaround time of operation and service life of the heat exchanger.

Proposed surface heat exchanger, comprising a housing with front and rear support uneven legs, with compensator lens and tube bundle with pipe inlet and outlet coolant, front water chamber with a partition dividing the tube bundle into two parts, with the nozzle inlet and outlet of the heated medium and rear water chamber, while the lens compensator is located near the rear water chamber, and the rear supporting paw casing provided with an additional supporting device around, and installed on the housing front lens compensator or behind them.

The invention is illustrated in the drawing.

Surface heat exchanger includes a housing 1 with a front 2 and rear 3 reference uneven legs, with compensator lens 4 and the beam pipe 5 with the nozzle inlet 6 and outlet 7 heat is osites, front water chamber 8 with the partition wall 9 separating the tube bundle into two parts, with the nozzle inlet 10 and outlet 11 of the heated medium and the rear water chamber 12. The lens compensator 4 is located near the rear water chamber 12. Rear bearing paw 3 is provided with an additional supporting device 13 around the compensator lens 4 and is installed on the housing 1 in front of the lens compensator 4 or behind them.

The heat exchanger works as follows. In case 1 in tube bundle 5 through pipe coolant supply 6 is supplied vapor condenses and releases heat and condensate through the pipe outlet of the coolant 7 is given in the installation cycle. Heating medium (water) at a flow rate close to the nominal through the nozzles supplying the heated medium 10 is fed into the front water chamber 8 passes through the tube bundle 5 and the rear water chamber 12 and through the pipe outlet of the heated medium 11 flows to the deaerator. When the supply of steam and water in the apparatus due to heat expansion occurs (elongation) of the housing and the tube bundle. Due to the different values of the coefficient of linear expansion of the absolute value of the value of the expansion shell and the tube bundle will differ among themselves. The presence of the compensator lens 4 will prevent the occurrence of thermal stresses, and the presence of a supporting device 13 will provide the play is the first weight load from the water chamber and coaxially extending elements of the device.

Surface heat exchanger, comprising a housing with front and rear support uneven legs, with compensator lens and tube bundle with pipe inlet and outlet coolant, front water chamber with a partition dividing the tube bundle into two parts, with the nozzle inlet and outlet of the heated medium and rear water chamber, characterized in that the compensator lens is located near the rear water chamber, and the rear supporting paw casing provided with an additional supporting device around, and installed on the housing front lens compensator or behind them.



 

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