CN208736215U - A kind of fluid delivery structure and double-tube heat exchanger - Google Patents

Abstract

A kind of fluid delivery structure and double-tube heat exchanger, belong to field of heat exchangers.Fluid delivery structure is used to input fluid from down to high mode to double-tube heat exchanger.Fluid delivery structure includes blind plate, hollow the first branch pipe and the second branch pipe.Wherein, the first branch pipe is extended by the first front end to the first rear end, and the opening of the first rear end is closed by blind plate, and the first branch pipe is provided with fluid outlet in the part of adjacent openings.Second branch pipe is extended by the second front end to the second rear end, and the second branch pipe has first segment interconnected and second segment and is in bending structure, and the second front end is connected to fluid outlet and lumen is interconnected, and the second rear end is configured to be incorporated in double-tube heat exchanger.The fluid delivery structure of the utility model, which can be effectively reduced, is introduced into solid sundries in double-tube heat exchanger.

Description

A kind of fluid delivery structure and double-tube heat exchanger

Technical field

The utility model relates to field of heat exchangers, in particular to a kind of fluid delivery structure and double-tube heat exchanger.

Background technique

Double pipe heat exchanger is formed by connecting concentric circular sleeve with two kinds of different standard pipes of size, and shell side is in outside, Internal is tube side.Two kinds of different mediums can in shell side and tube side reverse flow (or in the same direction) to achieve the purpose that heat exchange.

Heat passes to one other fluid by a kind of fluid by the tube wall of inner tube.In general, hot fluid is introduced by top, and Cold fluid is then introduced by lower part.Double pipe heat exchanger have structure is simple, heat transfer area increase and decrease freely, heat conductive efficiency is high, structure Simply, work accommodation range is big, and flow velocity can be improved in two side liquids, and there are higher heat transfer coefficient in heat-transfer area two sides.But There is also the metal pipe material consumption of unit heat-transfer area is big, maintenance, cleaning and disassembly are all cumbersome, easily cause at releasable connection The problems such as leakage.

In alumina leaching workshop, double-tube heat exchanger is main production equipment.Due to needing to make in process of production It will lead to double-tube heat exchanger blocking easy to form with the strip that flash distillation steam exhaust is preheated, and flashes steam exhaust.

In view of this, being improved to double-tube heat exchanger, warm is generated to avoid steam exhaust strip dysgenic Problem is just particularly important.

The information disclosed in the background technology section is intended only to deepen the reason to the general background technology of the utility model Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form Technology.

Utility model content

Based on the deficiencies of the prior art, the utility model provides a kind of fluid delivery structure, partly or entirely to change It is apt to, even solves the problems of the prior art.

The utility model is realized in this way:

In the utility model in a first aspect, providing a kind of fluid delivery structure.

Fluid delivery structure provided by the utility model is used to input fluid from down to high mode to double-tube heat exchanger.

Wherein, double-tube heat exchanger includes inner tube, outer tube, collet and supporting block.Inner and outer tubes are concentric to be arranged.Collet Setting is between the inner and outer pipe sections.The supporting block support between the inner and outer pipe sections and respectively inner wall with the outer wall of inner tube and outer tube Contact.

Fluid delivery structure includes the first branch pipe, the second branch pipe and blind plate, and the first branch pipe, the second branch pipe are hollow Pipe, fluid delivery structure are configured to from passing sequentially through the first branch pipe, the second branch pipe to double-tube heat exchanger trandfer fluid.

First branch pipe is extended by the first front end to the first rear end, and the opening of the first rear end is closed by blind plate, and first Branch pipe is provided with fluid outlet in the part of adjacent openings.

Second branch pipe is extended by the second front end to the second rear end, and the second branch pipe has first segment interconnected and the Two sections and be in bending structure, the second front end is connected to fluid outlet and lumen and is interconnected, and the second rear end is configured to combine In double-tube heat exchanger.

In other one or more examples, the second front end of the second branch pipe passes through flanged joint in the stream of the first branch pipe Body delivery outlet.

In other one or more examples, the second rear end of the second branch pipe is by flanged joint in double-tube heat exchanger.

In other one or more examples, connected between first segment and second segment by the hollow tube with arc inner cavity It connects.

In other one or more examples, arc is provided with strainer in inner cavity.

In other one or more examples, arc inner cavity has sequentially connected first inner chamber section, second inner chamber section And third inner cavity section, cavity fluid is successively flowed by first inner chamber section, second inner chamber section and third inner cavity section in arc, Arc inner cavity is in contraction-like and by second inner chamber section to third inner cavity section gradually in expansion by first inner chamber section to second inner chamber section Shape.

In other one or more examples, inner and outer tubes are metal material.

In the second aspect of the utility model, a kind of double-tube heat exchanger is provided.

Double-tube heat exchanger includes fluid delivery structure as the aforementioned.

In other one or more examples, double-tube heat exchanger includes multiple sequentially connected fluid delivery structures.

In other one or more examples, fin is provided between inner and outer tubes.

The utility model has the advantages that

Fluid delivery structure provided by the embodiment of the utility model includes the first branch pipe, the second branch pipe and blind plate.Wherein, First branch pipe and the connection of the second branch pipe, and form a curved fluid supplying passage.It can by fluid supplying passage above-mentioned Fluid to be delivered in double-tube heat exchanger from the bottom to top.Wherein, blind plate then can be used as maintenance, each pipeline of repairing is used.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the process flow diagram for carrying out heat exchange processing system using double-tube heat exchanger in the prior art；

Fig. 2 is the fluid input mode of heat exchange processing system middle sleeve heat exchanger shown in FIG. 1；

Fig. 3 be the utility model fluid input mode from fluid delivery structure to double-tube heat exchanger；

Fig. 4 is the structural schematic diagram of existing double-tube heat exchanger；

Fig. 5 transports process schematic diagram for the heat exchanging fluid in double-tube heat exchanger shown in Fig. 4.

Icon: the first branch pipe of 100-；The second branch pipe of 101-；1013- first segment；1012- second segment；200- inner tube；201- Outer tube；202- collet；203- supporting block.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.Therefore, below to attached The detailed description of the embodiments of the present invention provided in figure is not intended to limit the range of claimed invention, But it is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, ordinary skill people Member's every other embodiment obtained without making creative work, belongs to the model of the utility model protection It encloses.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or The utility model product using when the orientation or positional relationship usually put, be merely for convenience of description the utility model and letter Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and Operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " etc. are only used for area Divide description, is not understood to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition Solve the concrete meaning of above-mentioned term in the present invention.

In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it "lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above " One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only Indicate that first feature horizontal height is less than second feature.

In the present invention, in the case where not contradiction or conflict, all embodiments, embodiment of the utility model And feature can be combined with each other.In the present invention, conventional unit, component etc., both can be commercially available, can also be with It is made by oneself according to content disclosed by the utility model.In the present invention, in order to protrude the emphasis of the utility model, to it is some often The omission that the operation of rule and unit, component carry out, or be only briefly described.

In existing Alumina Corporation's digestion workshop production process, often refer to that various materials are cooled down or risen Warm heat exchange processing, therefore, double-tube heat exchanger is used as a kind of main equipment.

As a kind of use example of double-tube heat exchanger, Fig. 1 it illustrates in Alumina Corporation's digestion workshop based on The process flow diagram of the heat-exchange system of double-tube heat exchanger.

In Fig. 1, double-tube heat exchanger shares 8 grades of casings, and every grade of casing is made of 4 casings.Wherein, 1 grade of casing, 2 grades of sets Pipe, 3 grades of casings, 4 grades of casings are preheating section, and 5 grades of casings, 6 grades of casings, 7 grades of casings, 8 grades of casings are bringing-up section.

2,3,4 grades of casings of preheating section, dodge using 1,2 dodge, 3 dodge and amount to three flash tanks, and by flash distillation steam exhaust, (steam exhaust is Superheated steam with calorific potential energy.It can be used to introduce such as steam turbine through pipeline, and calorific potential can be transformed into kinetic energy.) into Row preheating.Because flash tank steam exhaust is there are strip phenomenon, the solid bulky grain in slurry and the sleeve pipe heat exchanger collet shape that scabs At scabbing, double-tube heat exchanger collet can be blocked under serious conditions, influence double-tube heat exchanger heat transfer effect and flash distillation steam exhaust utilization rate.

Inventor has found under study for action, and in above-mentioned system, flash distillation steam exhaust pipe is connect using straight tube mode as shown in Figure 2 Enter double-tube heat exchanger, solid bulky grain and scabs and be directly entered double-tube heat exchanger collet when strip, so as to cause above-mentioned It solid bulky grain and scabs into collet.

In the prior art in order to avoid the generation of above situation, usually used processing mode is to make consolidating in slurry Body bulky grain and scab etc. is removed in advance.However such improvement is complicated and is not easy to realize, it is often necessary to larger Improvement cost.

In view of this, inventors herein propose one kind can be realized in the case where carrying out smaller improvement to original system it is big to solid Particle and effective shielding that scabs, to avoid in the collet of its sleeve pipe heat exchanger.

For generally, in the present invention, original slurry is inputted to the mode that (such as Fig. 2) is introduced directly by straight tube It is revised as conveying by the way of (such as Fig. 3) from low to high.In such a configuration, the solid bulky grain in transported fluid It can be separated from fluid slurry under gravity with scabbing.

Inventor uses such a simple, but cleverly mode, realizes and imitates well in smaller improvement Fruit.

Fluid delivery structure provided in this embodiment is used to input fluid from down to high mode to double-tube heat exchanger.

Refering to Fig. 4, double-tube heat exchanger includes inner tube 200, outer tube 201, collet 202 and supporting block 203.Inner and outer tubes It is concentric to be arranged, it is preferable that inner and outer tubes are metal material.Collet is arranged between the inner and outer pipe sections.Supporting block 203 Support is contacted with the inner wall of the outer wall of inner tube and outer tube between the inner and outer pipe sections and respectively.Heat exchanging fluid is in double-tube heat exchanger Work mobility status can be found in Fig. 5.

Refering to Fig. 3, fluid delivery structure includes the first branch pipe 100, the second branch pipe 101 and blind plate, the first branch pipe, second Branch pipe is hollow tube.

Fluid delivery structure is configured to from passing sequentially through the first branch pipe, the second branch pipe to double-tube heat exchanger trandfer fluid.

Wherein, the first branch pipe is extended by the first front end to the first rear end.The opening of first rear end is closed by blind plate, First branch pipe is provided with fluid outlet in the part of adjacent openings.

Second branch pipe is extended by the second front end to the second rear end.Second branch pipe has first segment interconnected and the Two sections and be in bending structure.

Second front end is connected to fluid outlet and lumen is interconnected, as a kind of connection implementation, the second branch pipe The second front end by flanged joint the first branch pipe fluid outlet.

Second rear end is configured to be incorporated in double-tube heat exchanger, and in other examples, the second rear end of the second branch pipe is logical Flanged joint is crossed in double-tube heat exchanger.

Second branch pipe can be integrally formed tube body, or be also possible to assemble in such a way that segmentation combines Tube body.In a kind of example, for the tube body that piecewise combination is formed, between first segment 1013 and second segment 1012, by having The hollow tube of arc inner cavity connects.In order to better play isolation solid bulky grain and scab, arc inner cavity, which has, to be sequentially connected First inner chamber section, second inner chamber section and third inner cavity section.Cavity fluid is successively by first inner chamber section, second in arc Chamber section and the section flowing of third inner cavity.Arc inner cavity is by first inner chamber section to second inner chamber section in contraction-like and by second inner chamber section To third inner cavity section gradually in expansion shape.

Further, strainer is provided in arc inner cavity.Preferably, first inner chamber section is arranged in adjacent to its free end in strainer Part.

Based on above fluid delivery structure, the utility model also proposed a kind of double-tube heat exchanger comprising above-mentioned stream Body structure for conveying.Preferably, double-tube heat exchanger includes multiple sequentially connected fluid delivery structures.It is defeated by connecting multiple fluids Structure is sent, the delivery head drop of fluid can be made to increase, thus before preferably making fluid sleeve pipe heat exchanger as best one can It separates solid bulky grain and scabs.

In addition, in order to improve the heat transfer efficiency of double-tube heat exchanger, also settable fin between inner and outer tubes.Fin can Increase heat transfer area, so as to improve heat-transfer effect.For highly viscous fluid, various forms of fins are added in outer wall of inner tube, And knifing disturbance device is added in inner tube, to adapt to the heat exchange of high viscosity fluid.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all within the utility model principle, made Any modification, equivalent substitution, improvement and etc., should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of fluid delivery structure, which is characterized in that the fluid delivery structure from down to high mode to casing for changing Hot device inputs fluid, and described sleeve pipe heat exchanger includes inner tube, outer tube, collet and supporting block, and said inner tube and the outer tube are same Axle center is arranged, and the folder is set between said inner tube and the outer tube, and the supporting block is supported on said inner tube and described It is contacted between outer tube and respectively with the inner wall of the outer wall of said inner tube and the outer tube, the fluid delivery structure includes first Pipe, the second branch pipe and blind plate, first branch pipe, second branch pipe are hollow tube, and the fluid delivery structure is by structure It makes cause and passes sequentially through first branch pipe, second branch pipe to described sleeve pipe heat exchanger trandfer fluid；

First branch pipe is extended by the first front end to the first rear end, and the opening of first rear end is sealed by the blind plate It closes, first branch pipe is provided with fluid outlet in the part of the neighbouring opening；

Second branch pipe is extended by the second front end to the second rear end, and second branch pipe has first segment interconnected With second segment and in bending structure, second front end is connected to the fluid outlet and lumen is interconnected, and described second Rear end is configured to be incorporated in described sleeve pipe heat exchanger.

2. fluid delivery structure according to claim 1, which is characterized in that second front end of second branch pipe is logical Flanged joint is crossed in the fluid outlet of first branch pipe.

3. fluid delivery structure according to claim 1 or 2, which is characterized in that after described the second of second branch pipe End is by flanged joint in described sleeve pipe heat exchanger.

4. fluid delivery structure according to claim 1, which is characterized in that lead between the first segment and the second segment Cross the hollow tube connection with arc inner cavity.

5. fluid delivery structure according to claim 4, which is characterized in that be provided with strainer in the arc inner cavity.

6. fluid delivery structure according to claim 4 or 5, which is characterized in that the arc inner cavity, which has, to be sequentially connected First inner chamber section, second inner chamber section and third inner cavity section, cavity fluid is successively by the first inner chamber in the arc Section, the second inner chamber section and third inner cavity section flowing, the arc inner cavity is by the first inner chamber section to described the Two inner cavities section is in contraction-like and by the second inner chamber section to the third inner cavity section gradually in expansion shape.

7. fluid delivery structure according to claim 1, which is characterized in that said inner tube and the outer tube are metal material Matter.

8. a kind of double-tube heat exchanger, which is characterized in that including fluid conveying such as according to any one of claims 1 to 7 Structure.

9. double-tube heat exchanger according to claim 8, which is characterized in that described sleeve pipe heat exchanger includes multiple is sequentially connected The fluid delivery structure.

10. double-tube heat exchanger according to claim 8, which is characterized in that be provided between said inner tube and the outer tube Fin.