CN209085396U - A kind of combination shell-and-tube heat exchanger - Google Patents

Abstract

The utility model relates to technical field of heat exchangers, more particularly to a kind of combination shell-and-tube heat exchanger, solving heat exchanger shell and tube bank temperature difference causes heat exchanger tube to be bent, fracture, or it pulls, and heat exchanger tube leaks, maintenance personnel is difficult to the shortcomings that repairing, including main casing, the side of the main casing is fixedly installed with time shell, the other side of the secondary shell is fixedly installed with end socket, first medium import is offered at the top of main casing, front tube sheet can be sealed effectively, it can also be achieved and dismantled out of secondary shell simultaneously, personnel are maintained easily to repair the heat exchanger tube of failure, first medium import is passed through by the one end for exporting second medium simultaneously, and the interior welds economizer bank in second medium outlet, make the derived second medium for still having residual temperature in second medium outlet by economizer bank preferentially with first medium import Interior first medium exchanges heat, so that shell internal-external temperature difference is reduced, the case where effectively preventing heat exchanger tube from breaking down.

Description

A kind of combination shell-and-tube heat exchanger

Technical field

The utility model relates to technical field of heat exchangers more particularly to a kind of combination shell-and-tube heat exchangers.

Background technique

Shell-and-tube heat exchanger is also known as tubular heat exchanger.It is to close the wall surface restrained in the housing as between heat-transfer area Wall type heat exchanger.This heat exchanger structure is simple, low cost, flow area is wider, is readily cleaned scale；But heat transfer coefficient is low, It takes up a large area.It can be manufactured, can be used under high temperature and pressure with various structural materials, be type most widely used at present.

Chinese Patent Application No.: CN201220162834.9 discloses combination shell-and-tube heat exchanger, it is set using modular Meter theory is designed, the envelope of tube sheet, adapter tube, sealing including shell, modular heat transfer element, separation tube side and shell side Item；Modular heat transfer element is that outer finned is arranged on each heat-transfer pipe, and fin is combined with each other, and composition is parallel to heat-transfer pipe Runner, realize and work with the pure adverse current of heat-transfer pipe.The utility model is with modularized design, and compact-sized, manufacture flexibly, assembles Simplicity is easy to standardized production, can form pure adverse current, realizes high efficient heat exchanging.

But the heat exchanger is since the temperature of outer fluid in pipe is different, therefore the shell of heat exchanger and the temperature of tube bank be not yet Together.If two temperatures differ greatly, very big thermal stress will be generated in heat exchanger, lead to tube bending, fracture, or pull up from tube sheet It is de-, and since Tube-sheet Welding is in case inside, it is leaked if there is heat exchanger tube, maintenance personnel is difficult to repair it.

Utility model content

Purpose of the utility model is to solve heat exchanger shells and tube bank temperature difference to lead to heat exchanger tube bending, breaks It splits or pulls, and heat exchanger tube leaks, maintenance personnel is difficult to the shortcomings that repairing, and a kind of combination pipe shell type heat exchange proposed Device.

To achieve the goals above, the utility model adopts the technical scheme that

A kind of combination shell-and-tube heat exchanger, including main casing, the side of the main casing is fixedly installed with time shell, described The other side of secondary shell is fixedly installed with end socket, and first medium import is offered at the top of main casing, and the side of main casing opens up There is second medium outlet, the bottom of main casing is also provided with sewage draining exit, first medium outlet is offered at the top of the secondary shell, The side of the end socket offers second medium import；

One end interior welds of the main casing have back tube sheet, are fixedly installed with front tube inside one end of the secondary shell Plate, the inside of the first medium import are arranged with economizer bank, and loop bar, the inside of the loop bar are welded on the inside of the end socket It is placed with spring, the inside of loop bar is also socketed with strut.

Preferably, by flanged joint between the main casing, secondary shell and end socket, the inside of the flange is equipped with close Seal.

Preferably, the interior welds of the back tube sheet have heat exchanger tube, and one end of the heat exchanger tube extends to the interior of time shell Portion, and the end of heat exchanger tube and front tube sheet weld.

Preferably, the inner wall of the main casing and time shell is welded with baffle plate, and the baffle plate is set in heat exchanger tube Outside.

Preferably, one end of the second medium outlet passes through first medium import, and one end of second medium outlet is prolonged Outside the other side for extending to first medium import, the both ends of the economizer bank export with second medium and weld.

Preferably, one end of the strut extends on the outside of one end of loop bar, and the end gluing of strut has sealing ring, institute State the outside that sealing ring is set in front tube sheet.

The beneficial effects of the utility model are:

1, spring is placed in the inside of loop bar, when end socket passes through flanged joint on secondary shell, secondary shell can compress bullet Spring, make spring generate reaction force push the sealing ring of strut end by front tube sheet by the inner wall of sealing ring and time shell it Between realize sealing, when the failures such as leakage occur for the heat exchanger tube that welds on front tube sheet and back tube sheet, it is only necessary to open end socket and time Flange between shell, then the flange between time shell and main casing is opened, secondary shell can be deviate from from main casing, make to change Heat pipe is fully exposed, and maintenance personal is facilitated to repair.

2, second medium outlet discharge still have the second medium of residual temperature by economizer bank first with it is warm in first medium import It spends lower first medium and first carries out heat exchange, so that heat makes full use of, and be unlikely to make internal and external temperature is excessively high to cause to exchange heat The problem of pipe damages.

In conclusion making sealing ring sealing front tube sheet and time shell using the reaction force that the spring-compressed in end socket generates Inner wall maintains easily personnel so that front tube sheet can be sealed effectively, while be can also be achieved and be dismantled out of secondary shell The heat exchanger tube of failure is repaired, while one end by exporting second medium passes through first medium import, and second The interior welds economizer bank of media outlet keeps the derived second medium for still having residual temperature in second medium outlet preferential by economizer bank It exchanges heat with the first medium in first medium import, so that shell internal-external temperature difference is reduced, effectively prevents heat exchanger tube The case where failure.

Detailed description of the invention

Fig. 1 be the utility model proposes a kind of combination shell-and-tube heat exchanger structural schematic diagram；

Fig. 2 be the utility model proposes a kind of combination shell-and-tube heat exchanger local overlooking structural schematic diagram；

Fig. 3 be the utility model proposes a kind of combination shell-and-tube heat exchanger A at structural schematic diagram.

In figure: 1 main casing, 2 shells, 3 end sockets, 4 back tube sheets, 5 front tube sheets, 6 baffle plates, 7 sewage draining exits, 8 heat exchanger tubes, 9 First medium outlet, 10 first medium imports, the outlet of 11 second mediums, 12 second medium imports, 13 economizer banks, 14 loop bars, 15 Spring, 16 struts, 17 sealing rings.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.

Referring to Fig.1-3, a kind of combination shell-and-tube heat exchanger, including main casing 1, the side of main casing 1 are fixedly installed with secondary Shell 2, the other side of secondary shell 2 are fixedly installed with end socket 3, and the top of main casing 1 offers first medium import 10, main casing 1 side offers second medium outlet 11, and the bottom of main casing 1 is also provided with sewage draining exit 7, and the top of secondary shell 2 offers First medium outlet 9, the side of end socket 3 offers second medium import 12, and one end interior welds of main casing 1 have back tube sheet 4, Front tube sheet 5 is fixedly installed with inside one end of secondary shell 2, the inside of first medium import 10 is arranged with economizer bank 13, end socket 3 Inside is welded with loop bar 14, and the inside of loop bar 14 is placed with spring 15, and the inside of loop bar 14 is also socketed with strut 16；

By flanged joint between main casing 1, secondary shell 2 and end socket 3, the inside of flange is equipped with sealing ring, back tube sheet 4 Interior welds have a heat exchanger tube 8, one end of heat exchanger tube 8 extends to the inside of time shell 2, and the end of heat exchanger tube 8 and front tube sheet 5 The inner wall of welding, main casing 1 and time shell 2 is welded with baffle plate 6, and baffle plate 6 is set in the outside of heat exchanger tube 8, and second is situated between One end of matter outlet 11 passes through first medium import 10, and one end of second medium outlet 11 extends to first medium import 10 Outside the other side, with 11 welding of second medium outlet, one end of strut 16 extends to the one of loop bar 14 at the both ends of economizer bank 13 End outside, and the end gluing of strut 16 has sealing ring 17, sealing ring 17 is set in the outside of front tube sheet 5.

In the present embodiment, shell-and-tube heat exchanger is split into as main casing 1, secondary shell 2 and end socket 3, and by flange into Row combination connection, seals being realized by sealing ring, in one end interior welds back tube sheet 4 of main casing 1, the one of secondary shell 2 End is internal to install front tube sheet 5, welds a snare bar 14 in the inside of end socket 3, and place spring 15 in the inside of loop bar 14, works as envelope First 3 pass through flanged joint when on secondary shell 2, and the secondary meeting of shell 2 compressed spring 15 makes spring 15 generate reaction force and pushes strut The sealing ring 17 of 16 ends is sealed front tube sheet 5 by realizing between sealing ring 17 and the inner wall of secondary shell 2, when front tube sheet 5 When the failures such as leakage occur with the heat exchanger tube 8 welded on back tube sheet 4, it is only necessary to the flange between end socket 3 and secondary shell 2 is opened, The flange between time shell 2 and main casing 1 is opened again, secondary shell 2 can be deviate from from main casing 1, keeps heat exchanger tube 8 completely sudden and violent Expose, maintenance personal is facilitated to repair.

Further, second medium outlet 11 and first medium import 10 are opened up respectively at the side of main casing 1 and top, And make second medium outlet 11 one end pass through first medium import 10 inside, second medium export 11 place first mediums into It is welded with economizer bank 13 in mouth 10, and economizer bank 13 is made helically to be wound around the inner wall that first medium exports 10, so that second is situated between The second medium for still having residual temperature of 11 discharge of matter outlet by economizer bank 13 first with temperature in first medium import 10 lower the One medium first carries out heat exchange, so that heat makes full use of, and is unlikely to make internal and external temperature is excessively high to lead to asking for the damage of heat exchanger tube 8 Topic.

In conclusion using in end socket 3 spring 15 compression generate reaction force make sealing ring 17 seal front tube sheet 5 with Secondary 2 inner wall of shell, so that front tube sheet 5 can be sealed effectively, while be can also be achieved and be dismantled out of secondary shell 2, side Just maintenance personnel repairs the heat exchanger tube 8 of failure, while by making one end of second medium outlet 11 pass through first medium Import 10, and the interior welds economizer bank 13 in second medium outlet 11 make still have residual temperature derived from second medium outlet 11 Second medium is preferentially exchanged heat with the first medium in first medium import 10 by economizer bank 13, so that inside and outside shell The case where temperature difference is reduced, and effectively prevents heat exchanger tube 8 from breaking down.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for Convenient for description the utility model and simplify description, rather than the equipment of indication or suggestion meaning or element must have specifically Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (6)

1. a kind of combination shell-and-tube heat exchanger, including main casing (1), which is characterized in that the fixed peace in the side of the main casing (1) Equipped with secondary shell (2), the other side of the secondary shell (2) is fixedly installed with end socket (3), and is offered at the top of main casing (1) One medium entrance (10), the side of main casing (1) offer second medium outlet (11), and the bottom of main casing (1) is also provided with Sewage draining exit (7), offers first medium outlet (9) at the top of the secondary shell (2), and the side of the end socket (3) offers the Second medium import (12)；

One end interior welds of the main casing (1) have back tube sheet (4), are fixedly installed with inside one end of the secondary shell (2) The inside of front tube sheet (5), the first medium import (10) is arranged with economizer bank (13), is welded on the inside of the end socket (3) The inside of loop bar (14), the loop bar (14) is placed with spring (15), and the inside of loop bar (14) is also socketed with strut (16).

2. a kind of combination shell-and-tube heat exchanger according to claim 1, which is characterized in that the main casing (1), secondary shell (2) by flanged joint between end socket (3), the inside of the flange is equipped with sealing ring.

3. a kind of combination shell-and-tube heat exchanger according to claim 1, which is characterized in that the inside of the back tube sheet (4) Be welded with heat exchanger tube (8), one end of the heat exchanger tube (8) extends to the inside of time shell (2), and the end of heat exchanger tube (8) with Front tube sheet (5) welding.

4. a kind of combination shell-and-tube heat exchanger according to claim 1, which is characterized in that the main casing (1) and time shell The inner wall of body (2) is welded with baffle plate (6), and the baffle plate (6) is set in the outside of heat exchanger tube (8).

5. a kind of combination shell-and-tube heat exchanger according to claim 1, which is characterized in that the second medium exports (11) One end pass through first medium import (10), and second medium outlet (11) one end extend to the another of first medium import (10) Outside side, the both ends of the economizer bank (13) are welded with second medium outlet (11).

6. a kind of combination shell-and-tube heat exchanger according to claim 1, which is characterized in that prolong one end of the strut (16) On the outside of the one end for extending to loop bar (14), and the end gluing of strut (16) has sealing ring (17), and the sealing ring (17) is set in The outside of front tube sheet (5).