CN218937092U - Bellows falling film condensation cooler - Google Patents

Abstract

The utility model discloses a bellows falling film condensing cooler, which comprises a shell, a tube plate 1, a tube plate 2, a steam guiding head 1 and a steam guiding head 2, and the tube plate 1 and the tube plate 2 are fixed on Corrugated heat exchange tubes are connected, the steam guide head 1 is set on the left side of the tube plate 1, the top of the steam guide head 1 is provided with a secondary steam inlet, and the steam guide head 2 is set on the right side of the tube plate 2 , the bottom of the steam guide head 2 is provided with a condensate outlet, the cavity above the corrugated heat exchange tube is provided with a membrane distributor, and at least one exhaust port is provided on the top wall of the shell above the membrane distributor. A water receiving basin is provided below the water receiving basin, and a liquid inlet is provided on the receiving basin, and a circulating water pipe with a water pump is connected to the water outlet at the bottom of the water receiving basin. .

Description

Bellows Falling Film Condensing Cooler

technical field

The utility model relates to the technical field of a falling film evaporator, in particular to a bellows falling film condensation cooler.

Background technique

The heat exchanger is the main equipment for heat energy exchange. It is widely used in pharmaceutical, food, chemical, sugar, salt, caustic soda and other fields. When the heat exchanger concentrates the liquid material, steam is added from the first effect. The flash steam of the first effect is used to heat the second effect, and so on, the temperature of each effect gradually decreases, and the temperature of the final effect flash steam is about 50°C; the current treatment method for the final effect flash steam is to use circulating water as the heat carrier and pass through the cooling tower Dissipate a large amount of heat of the final flash steam into the atmosphere; in this way, the final flash steam is not fully utilized, resulting in energy waste. In order to improve the energy utilization rate, the Chinese Utility Model Patent Specification with the notification number CN203999466U discloses a device for utilizing the heat energy of the last effect flash steam of the corn steep liquor evaporator, which includes a surface condenser, a circulating water pump 1, pipelines, a cooling tower, and a plate exchanger. Heater, high-level water tank, starch airflow heat exchanger and circulating water pump II; this corn steep liquor evaporator end-effect flash steam thermal energy utilization device can reuse the heat exchanger end-effect flash steam, which improves energy utilization. But its disadvantage is that, because the thermal energy utilization device needs to be equipped with large-scale equipment such as cooling towers, the investment cost is large.

Contents of the invention

The utility model provides a bellows falling film condensing cooler with low investment cost aiming at the above disadvantages.

The utility model is achieved in the following way: a bellows falling film condensing cooler, including a shell, tube plate one and tube plate two, steam guiding head one and steam guiding head two arranged on the left and right sides of the shell, the The tube plate 1 and the tube plate 2 are fixedly connected with corrugated heat exchange tubes. The steam guide head 1 is set outside the left side of the tube plate 1. The top of the steam guide head 1 is provided with a secondary steam inlet. The steam guide The second head is located on the outside of the right side of the tube sheet two, the bottom of the steam guiding head two is provided with a condensate outlet, the cavity above the corrugated heat exchange tube is provided with a membrane distributor, and the top wall of the shell above the membrane distributor There is at least one exhaust port on the top, and an exhaust fan is provided in the exhaust port; the lower part of the inner cavity of the housing is provided with packing; a water receiving basin is provided under the housing, and a liquid inlet is provided on the receiving basin. A circulating water pipe with a water pump is connected to the water outlet at the bottom of the water receiving basin, and the upper end of the circulating water pipe is connected to the inlet at the right end of the above-mentioned membrane distributor

With the above structure, the cooling liquid (material) enters the water receiving tray through the liquid inlet during operation, and the cooling liquid in the water receiving tray is sent to the film distributor through the water pump, and the film distributor makes the cooling liquid evenly distributed to the corrugated heat exchange tube The outer surface of the tube bundle is in the form of a liquid film, and the cooling fluid formed in the liquid film flows under the action of gravity to the outer surface of the tube bundle of the corrugated condenser tubes arranged downward; at the same time, the secondary steam from the final effect of the evaporator (not shown in the figure) passes through The secondary steam inlet enters the steam guiding head 1, and the secondary steam quickly enters the corrugated heat exchange tube side in the steam guiding head 1, and the secondary steam entering the tube side and the cooling liquid forming a liquid film outside the tube Heat exchange, in the process of heat exchange, because the contour line of the corrugated heat exchange tube is corrugated, the inner and outer sides of the corrugated heat exchange tube are prone to turbulent flow, which enhances the steam condensation heat transfer efficiency in the tube and greatly improves The heat transfer coefficient is obtained; the secondary steam condenses into condensate after releasing heat, and the condensate is discharged from the condensate outlet; the cooling liquid phase starts to evaporate after absorbing the latent heat of the secondary steam, and the evaporated gas of the cooling liquid is under the action of the exhaust fan It is discharged into the atmosphere, and at the same time, the evaporated liquid material in the cooling liquid phase enters the packing area, and the liquid material entering the packing area is further supercooled when it flows down in the form of a film. Since the corrugated heat exchange tube is installed in the condensing cooler, the corrugated heat exchange tube replaces the previous straight heat exchange tube, which greatly improves the heat exchange efficiency, so that the condensing cooler no longer needs to be equipped with cooling towers and other equipment , reducing investment costs.

Description of drawings

Fig. 1 is a structural schematic diagram of a bellows falling film condensation cooler of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment row the utility model is described in further detail.

The utility model provides a bellows falling film condensing cooler as shown in Figure 1, comprising a housing 6, a tube plate one 4 and a tube plate two 11 arranged on the left and right sides of the shell 6, and fixed on the tube plate one 4 and tube plate two The corrugated heat exchange tube 10 on the tube plate 2 11 is provided with a steam guide head 3 on the outside of the left side of the tube plate 4, and the top of the steam guide head 3 is provided with a secondary steam inlet 5, and on the tube plate 2 The outside of the right side of 11 is provided with a steam guiding head 2 12, and the bottom of the steam guiding head 12 is provided with a condensate outlet 13, and the cavity above the corrugated heat exchange tube is provided with a film cloth device 9, and the film cloth device 9 above The top wall of the housing 6 is provided with at least one exhaust port 7, the exhaust port 7 is provided with an exhaust fan 8; the lower part of the housing 6 cavity is provided with a packing 16; Water basin 1, is provided with liquid inlet 2 on the water receiving basin 1, is connected with the circulation water pipe 14 that has water pump 15 on the water outlet of water receiving basin 1 bottom, the upper end of this circulation water pipe 14 and above-mentioned film distributing device 9 right ends import connection.

When working, open the valve so that the coolant enters the water receiving tray 1 through the liquid inlet 2, and the coolant in the water receiving tray is sent to the film distributor 9 through the water pump 15, and the coolant (material) is evenly distributed to the The outer surface of the corrugated heat exchange tube 10 tube bundle is formed into a liquid film, and the liquid film-shaped cooling liquid flows to the outer surface of the corrugated condenser tubes in the lower row under the action of gravity; at the same time, the secondary steam from the final effect passes through the secondary steam inlet 5 Entering the steam guiding head 1 3, the secondary steam quickly enters the tube side of the corrugated heat exchange tube 10 in the steam guiding head 1 3, and the secondary steam entering the tube side heats up with the cooling liquid formed into a liquid film outside the tube. Exchange, the secondary steam condenses into condensate after heat release, and the condensate is discharged from the condensate outlet 13; the cooling liquid phase starts to evaporate after absorbing the latent heat of the secondary steam, and the non-condensable gas of the cooling liquid is under the action of the exhaust fan 8 It is discharged into the atmosphere, and at the same time, the evaporated cooling liquid phase liquid material enters the packing 16 area, and the liquid material entering the packing 16 area is further supercooled when it flows down in the form of a film.

Claims (1)

1. The utility model provides a bellows falling film condensation cooler, includes casing (6), sets up tube sheet one (4) and tube sheet two (11), steam direction head one (3), steam direction head two (12), characterized by in that on both sides about casing (6): the corrugated heat exchange tube is characterized in that corrugated heat exchange tubes (10) are fixedly connected to the first tube plate (4) and the second tube plate (11), the first steam guide seal head (3) is arranged outside the left side of the first tube plate (4), a secondary steam inlet (5) is formed in the top of the first steam guide seal head (3), the second steam guide seal head (12) is arranged outside the right side of the second tube plate (11), a condensate outlet (13) is formed in the bottom of the second steam guide seal head (12), a film distributor (9) is arranged in a cavity above the corrugated heat exchange tubes (10), at least one exhaust port (7) is formed in the top wall of a shell (6) above the film distributor (9), and an exhaust fan (8) is arranged in the exhaust port (7); the lower part of the inner cavity of the shell (6) is provided with a filler (16); a water receiving basin (1) is arranged below the shell (6), a liquid inlet (2) is arranged on the water receiving basin (1), a water outlet at the bottom of the water receiving basin (1) is connected with a circulating water pipe (14) with a water pump (15), and the upper end of the circulating water pipe (14) is connected with an inlet at the right end of the film distributor (9).

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