CN2314326Y - Enhanced heat transferring shell-and-tube heat exchanger - Google Patents

Abstract

The utility model relates to an enhanced heat transferring shell-and-tube heat exchanger, which comprises a sealing head, a shell and a heat exchange tube which is assembled in the enhanced heat transferring shell-and-tube heat exchanger through a deflecting plate and a tube plate, wherein, the heat exchange tube is a thick-wall tube whose tube wall is provided with an annular body. The outside of the annular body is concave and the inside of the annular body is convex, and the annular body is sectionally shaped from outside to inside. The utility model has the advantages of simple and convenient structure, reliable seal, less scaling, no jamming, safe and steady operation, high heat transferring efficiency and wide application range.

Description

Augmentation of heat transfer type shell-and-tube heat exchanger

The utility model relates to the device that a kind of cold and hot medium carries out exchange heat, particularly a kind of augmentation of heat transfer type shell-and-tube heat exchanger.

At present, the heat exchanger in fields such as extensive use drystone oil, chemical industry, metallurgy has heat exchangers such as shell-and-tube, board-like, spiral plate type, vibrating disk tubular type, plate-fin.Because of there are some defectives in varying degrees in it, limitation is all arranged so use.Though as existing traditional shell-and-tube heat exchanger operate steadily, safety firmly, its volume is big, heat transfer coefficient is low, easily stifled, easily fouling.Though plate type heat exchanger heat transfer coefficient height, volume are little, but still easily stop up, and very easily leak, should not promote.Have the bellows-type heat exchanger now and solved the shortcoming that above-mentioned heat exchanger exists to a certain extent, but because its used heat exchange tube wall approaches (thickness is not more than 1mm) so use also has limitation.Therefore, existing heat exchanger is further improved.

The purpose of this utility model provides a kind of augmentation of heat transfer type shell-and-tube heat exchanger, and its features simple structure, sealing be reliable, less scaling, do not stop up, and security of operation is steady, the heat transfer efficiency height, and its range of application is wider.

The purpose of this utility model is achieved in that this device comprises and has end socket, housing and assemble heat exchanger tube in it by the baffling utmost point, tube sheet that wherein heat exchanger tube is the thick-walled pipe that tube wall has the outer recessed internal projecting ring body of ecto-entad sectional forming.

Because the utility model is improved on existing vertical or horizontal shell-and-tube heat exchanger architecture basics, be easy to realize.The existing main heat transfer element of shell-and-tube heat exchanger is a heat exchanger tube, generally all adopts smooth straight pipe to make; The employing thin-wall corrugated tube that also has is made.The former easily forms the boundary layer by smooth tubes on the tube wall face when fluid flows through, easily fouling, obstruction path, the heat transfer efficiency that influence pipe is inside and outside: the trough of latter's bellows continuous wave pattern is easy incrustation, perishable also, the inside and outside heat transfer efficiency of influence pipe not only, and reduce bellows service life.This device adopts thick-walled pipe as heat exchanger tube, processes the annular solid of outer recessed convex simultaneously again on tube wall in the mode of sectional forming, when making fluid flow through inside and outside the heat exchanger tube, both attenuate boundary layers, be difficult for incrustation again, fluid forms abundant reinforcement turbulent flow at the inside and outside wall of pipe, improves heat transfer efficiency.Even under the very little situation of flow velocity, fluid also can form strong disturbance inside and outside pipe, also can improve heat transfer efficiency.This heat exchange tube structure is simpler than bellows, handling ease.The utility model security of operation is steady, less scaling, do not stop up the heat transfer efficiency height.When identical heat exchange amount, with existing shell-and-tube heat exchanger mutually specific volume can dwindle about 1/3, take up room so reduce.Therefore, this reality is novel very easily applies.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a kind of concrete structure schematic diagram of the present utility model.

Fig. 2 is a kind of concrete structure cutaway view of heat exchanger tube.

Describe concrete structure of the present utility model in detail according to Fig. 1-2.This device is improved on the architecture basics that has vertical or horizontal shell-and-tube heat exchanger now, and some parts is same as the prior art substantially as parts such as housing 11, end socket 2, tube sheet 4, flange 8, deflection plates 10.Wherein the shape of end socket 2 can be geometrical bodies such as spherical, butterfly body, flat board according to instructions for use.The heat exchanger tube 7 that is assembled in the housing 11 by deflection plate 10, tube sheet 4 adopts new structure, promptly with the method for smooth straight thick-walled pipe (thickness of pipe wall is greater than 1mm), on tube wall, process the annular solid of outer recessed convex of the ecto-entad moulding of desired spacing with the roller head machine sectional forming.This heat exchanger tube both had been different from the heat exchanger tube of existing smooth straight tubular type, the boundary layer that forms on tube wall face when it can destroy fluid and flows through heat exchanger tube, can play the effect that delays fouling, heat transfer efficiency also is different from the heat exchanger tube of bellows-type apparently higher than straight pipe, it changes the waveform wall thickness constraint of machine-shaping from inside to outside from the root table, manufacturing process is simple, and wall thickness is sturdy and durable, and is safe and reliable, widen the scope of application of medium, use more extensive.The medium inlet 3,9 of housing 11, the adapter shape of media outlet 1,5 can be straight tube shape or elbow-shaped.For making housing in the exchange heat process, have the function of self-compensation situation, bellows-type compensator 6 can be set on housing.The heavy wall heat exchanger tube of above-mentioned new structure also can be used on the heat exchanger of other version, as the heat exchanger of floating head type, U type tubular type, still formula etc.

Claims (2)

1, a kind of augmentation of heat transfer type shell-and-tube heat exchanger comprises having end socket, housing and assembling heat exchanger tube in it by the baffling utmost point, tube sheet, it is characterized in that heat exchanger tube is the thick-walled pipe that tube wall has the outer recessed internal projecting ring body of ecto-entad sectional forming.

2, heat exchanger according to claim 1 is characterized in that being provided with on the housing bellows-type compensator.

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