CN212109630U - Nested heat exchanger - Google Patents

Abstract

The utility model discloses a nested formula heat exchanger, this heat exchanger includes: the inner pipe, the outer pipe, the joint seat, the sealing seat, the tail pipe seat, the first joint and the second joint; the inner tube head is connected in the joint seat bottom, the seal receptacle top is connected in the joint seat bottom, the outer tube head is connected to the seal receptacle bottom, the outer tube box is established outside the inner tube, and form between outer tube inner wall and seal receptacle inner wall and the inner tube outer wall and set for the space, inner tube afterbody and outer tube afterbody are connected with the tail pipe seat respectively, the inner tube tail end is provided with the notch, the inside space of notch intercommunication inner tube with set for the space, the joint seat top is provided with first joint and second respectively and connects, first joint with set for the space intercommunication, the second connects with the inside space intercommunication. The nested heat exchanger of the utility model can adjust the size according to the actual use space, thus improving the utilization rate of the space; meanwhile, the problems of the bending overflowing section and the slit sealing welding can be solved, the manufacturing process and the manufacturing cost are effectively reduced, the disassembly and the assembly are convenient, and the reliability and the applicability are high.

Description

Nested heat exchanger

Technical Field

The utility model relates to a indirect heating equipment technical field especially relates to a nested formula heat exchanger.

Background

The heat exchanger is an energy-saving device for transferring heat between materials between two or more than two fluids with different temperatures, so that the heat is transferred from the fluid with higher temperature to the fluid with lower temperature, the temperature of the fluid reaches the index specified by the process to meet the requirements of process conditions, and the conventional heat exchanger can be used as a heater, a cooler and the like in chemical production.

The existing heat exchanger comprises a plate type heat exchanger shown in figure 1 and a bent flat type heat exchanger shown in figure 2, mainly pipes are bent into various sizes and shapes, cooling liquid or heating liquid enters from one end of each pipe, the other end of each pipe exits, water flows through the wall of the whole through long pipe to cool or heat the pipe, the outside of the pipe wall contacts heat-exchanged substances, and therefore the temperature of the heat-exchanged substances is reduced or increased.

The inventor finds that the prior art has at least the following problems:

in order to increase the contact area with a heat-exchanged substance and promote the heat exchange efficiency, the conventional heat exchanger usually adopts a plate type or a bent system pipe, and is a straight-in straight-out type, so that the structure of the heat exchanger is easily restricted by space when in use, and serious use space waste can be caused; in equipment with cooling liquid or heating liquid requirements, if the cooling liquid or the heating liquid is used as spraying dust-settling liquid after heat absorption or heat dissipation is finished, the requirement on the material of a pipeline is high, when a bent system tube heat exchanger is adopted, the material with high strength has high bending process requirement, the bent part is easy to become a weak position, water leakage fault is easy to cause, when a plate type heat exchanger is used, the problem of sealing at the joint of a tube plate is difficult to deal with, if welding is adopted, a plurality of stress concentration points are provided, if pipe thread connection is adopted, sealing is easy to damage, the cost of processing parts is high, the process is complex, and the technical threshold is high; in addition, because the material of the pipeline after being straightened and bent can hardly meet the functional requirements, the plate type heat exchange section is complex in modification process, the reduction or increase of the heat exchange size of the conventional plate type heat exchanger or bent tube tying heat exchanger is difficult to realize, and the adaptability is poor.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem who exists among the above-mentioned prior art, the utility model provides a nested formula heat exchanger.

Therefore, the utility model discloses a nested formula heat exchanger, the heat exchanger includes: the inner pipe, the outer pipe, the joint seat, the sealing seat, the tail pipe seat, the first joint and the second joint;

the inner tube head is connected the joint seat bottom, the seal receptacle top is connected the joint seat bottom, the seal receptacle bottom is connected the outer tube head, the outer pipe box is established the inner tube is outside, just the outer tube inner wall reaches the seal receptacle inner wall with form between the inner tube outer wall and set for the space, the inner tube afterbody with the outer tube afterbody respectively with tail pipe seat is connected, the inner tube tail end is provided with the notch, the notch intercommunication the inner space of inner tube with set for the space, the joint seat top is provided with respectively first joint with the second connects, first joint with set for the space intercommunication, the second connect with the inner space intercommunication.

Further, in the nested heat exchanger, the inner tube and the outer tube are both circular structures, an annular space is formed between the inner wall of the outer tube and the outer wall of the inner tube, and the sectional area of the annular space is larger than the inner diameter sectional area of the inner tube.

Further, in the above nested heat exchanger, the heat exchanger further includes a plurality of heat exchange fins, and the plurality of heat exchange fins are mounted on the outer wall of the outer tube.

Further, in the nested heat exchanger, the heat exchange fins are mounted on the outer wall of the outer tube in a spot welding manner.

Further, in the above nested heat exchanger, the heat exchanger further includes a fixing plate, and the fixing plate is mounted on the outer wall of the outer tube and used for connecting a heat-exchanged device.

Further, in the nested heat exchanger, the number of the notches is four, and the four notches are uniformly distributed along the periphery of the inner pipe.

Further, in the nested heat exchanger, a sealing groove is formed in the outer wall of the sealing seat, and a sealing element is detachably mounted on the sealing groove.

Further, in the nested heat exchanger, the number of the sealing grooves is plural.

Further, in the nested heat exchanger, the first joint and the second joint are both connected with the joint seat in a pipe thread connection mode.

Further, in the nested heat exchanger, the head of the inner tube is connected with the bottom of the joint seat, the top of the sealing seat is connected with the head of the outer tube, and the tail of the outer tube is connected with the tail tube seat in a fillet welding mode, and the head of the sealing seat is connected with the bottom of the joint seat in a V-shaped welding mode.

The nested heat exchanger of the utility model can adjust the size according to the actual use space, thus improving the utilization rate of the space; meanwhile, the bending overflowing section can be eliminated, so that the problem of weak local strength caused by uneven inner and outer wall materials after the bending section is subjected to thermal processing and bending can be avoided, the slit sealing welding problem can be eliminated, the manufacturing process and the manufacturing cost are effectively reduced, the assembly and disassembly are convenient, and the reliability and the applicability are high.

Drawings

The accompanying drawings, which are set forth herein, serve to provide a further understanding of the embodiments of the present invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are illustrative of the invention and do not constitute a limitation on the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a plate heat exchanger in the prior art;

FIG. 2 is a schematic structural view of a bent flat type heat exchanger according to the prior art;

fig. 3 is a schematic structural diagram of a nested heat exchanger according to an embodiment of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

fig. 5 is a view from direction B of fig. 3.

Description of reference numerals:

1-inner tube, 2-outer tube, 3-joint seat, 4-sealing seat, 5-tail tube seat, 6-first joint, 7-second joint, 8-heat exchange fin, 9-fixing piece and 10-sealing piece.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 3-5, an embodiment of the present invention provides a nested heat exchanger, which includes: the pipe joint comprises an inner pipe 1, an outer pipe 2, a joint seat 3, a sealing seat 4, a tail pipe seat 5, a first joint 6 and a second joint 7; the head of inner tube 1 is connected in the 3 bottoms of joint seat, the connection in the 3 bottoms of joint seat is at 4 tops of seal receptacle, 2 heads of outer tube are connected to 4 bottoms of seal receptacle, 2 covers of outer tube are established in 1 outside of inner tube, and form between 2 inner walls of outer tube and 4 inner walls of seal receptacle and 1 outer wall of inner tube and set for the space, 1 afterbody of inner tube and 2 afterbody of outer tube are connected with tail pipe seat 5 respectively, 1 tail end of inner tube is provided with the notch, the inside space of notch intercommunication inner tube 1 with set for the space, 3 tops of joint seat are provided with first joint 6 and second joint 7 respectively, first joint 6 with set for the space intercommunication, second joint 7.

It is following right that an embodiment of the utility model provides a nested formula heat exchanger's structure and principle carry out the concrete description:

the nested heat exchanger provided in one embodiment of the utility model can be used as a cooler and a heater; when the nested heat exchanger is used as a cooler, the nested heat exchanger is arranged in a cavity of equipment to be cooled, the sealing seat 4 is hermetically connected with the equipment to be cooled, high-pressure cooling liquid is continuously introduced into a cavity space between the inner wall of the sealing seat 4 and the outer wall of the inner tube 1 through the first joint 6, at the moment, under the action of water pressure, the high-pressure cooling liquid is filled in the cavity space between the inner wall of the outer tube 2 and the outer wall of the inner tube 1, the inner wall of the outer tube 2 is contacted with the high-pressure cooling liquid, the outer wall of the outer tube 2 is contacted with a cooled substance to carry out heat exchange, so that the cooled substance in the cavity of the equipment to be cooled is cooled, the high-pressure cooling liquid flows into the tail part of the outer tube 2 and the tail part of the inner tube 1 after completing the heat exchange with the outer tube 2 and the cooled substance, enters the inner space of, and discharged through a second joint 7, wherein the second joint 7 can be connected with a next-stage water-using device, such as a nozzle atomizer or a reaction furnace; when the nested heat exchanger is used as a heater, the nested heat exchanger is arranged in a cavity of a heated device, the sealing seat 4 is hermetically connected with the heated device, heating liquid is continuously introduced into a cavity space between the inner wall of the sealing seat 4 and the outer wall of the inner tube 1 through the first joint 6, at the moment, the heating liquid is filled in the cavity space between the inner wall of the outer tube 2 and the outer wall of the inner tube 1 under the action of water pressure, the inner wall of the outer tube 2 is contacted with the heating liquid, the outer wall of the outer tube 2 is contacted with the heated material to carry out heat exchange, so that the heated material in the cavity of the heated device is heated, the heating liquid flows into the tail part of the outer tube 2 and the tail part of the inner tube 1 after completing the heat exchange with the outer tube 2 and the heated material, enters the inner space of the inner tube 1 through the notch at the tail part of the inner tube 1, then flows to the head part, the second joint 7 can be connected with the next stage of water utilization equipment.

When the nested heat exchanger needs to adjust the heat exchange area, the length of the inner pipe 1 and the length of the outer pipe 2 can be increased or decreased. When the nested heat exchanger is used, the first joint 6 and the second joint 7 can be used for exchanging water inlet and water outlet according to the actual installation situation, namely the first joint 6 can be used for water inlet and water outlet, the second joint 7 can be used for water inlet and water outlet, when the first joint 6 is used for water inlet, the second joint 7 is used for water outlet, and when the first joint 6 is used for water outlet, the second joint 7 is used for water inlet; when the first joint 6 is connected with water and the second joint 7 is connected with water, the cooling liquid or the heating liquid in the cavity space between the inner pipe 2 and the outer pipe 1 can be cooled or heated in advance by the cooling liquid or the heating liquid in the inner pipe 1, and the overall heat exchange effect can be improved under a specific state.

The utility model discloses an in the embodiment, seal receptacle 4's structure can be selected according to the structure by indirect heating equipment of actual connection to guarantee that this nested heat exchanger installs when by indirect heating equipment, can realize seal receptacle 4 and by indirect heating equipment's seal assembly.

As shown in fig. 3-5, in an embodiment of the present invention, the inner tube 1 and the outer tube 2 are both circular structures, an annular space is formed between the inner wall of the outer tube 2 and the outer wall of the inner tube 1, and the sectional area of the annular space is larger than the inner diameter sectional area of the inner tube 1.

By the arrangement, the integral structure of the nested heat exchanger can be simplified, the nested heat exchanger is convenient to fix, disassemble and assemble, and the manufacturing cost is reduced; meanwhile, the bundling requirement caused by the bent pipe can be eliminated, and the adaptability of the nested heat exchanger in strong vibration equipment is improved.

As shown in fig. 3, in an embodiment of the present invention, the nested heat exchanger may further include a plurality of heat exchanging fins 8, and the plurality of heat exchanging fins 8 are installed on the outer wall of the outer tube 2.

So set up, through setting up heat transfer fin 8 and increase and decrease heat transfer fin 8, can adjust the heat exchange area of this nested formula heat exchanger, realize the best ratio of heat exchange.

Optionally, in an embodiment of the present invention, the heat exchanging fins 8 are installed on the outer wall of the outer tube 2 by spot welding.

Further, on the basis that the inner tube 1 and the outer tube 2 are both configured to be circular structures, the heat exchange fins 8 may be ring-shaped heat exchange fins.

As shown in fig. 3, in an embodiment of the present invention, the nested heat exchanger may further include a fixing plate 9, and the fixing plate 9 is installed on the outer wall of the outer tube 2 for connecting to the heat-exchanged device.

Wherein, the structure of stationary blade 9 can be selected according to the actual connected by indirect heating equipment's structure to when guaranteeing that this nested heat exchanger can fix by indirect heating equipment, improve the dismouting convenience.

As shown in fig. 4, in an embodiment of the present invention, the number of the notches formed on the inner tube 1 may be four, and the four notches are uniformly distributed along the periphery of the inner tube 1.

So set up, can improve the mobility between the cavity space that coolant liquid or heating fluid formed between inner tube 1 and outer tube 2 and the inner space of inner tube 1, improve the heat transfer effect.

As shown in fig. 3, in an embodiment of the present invention, a sealing groove is disposed on an outer wall of the sealing seat 4, and the sealing element 10 is detachably mounted on the sealing groove.

Wherein, the sealing member 10 can be selected according to the actual structure of the sealing seat 4 and the actual structure of the heat-exchanged device to ensure the sealing effect, and can be a sealing ring, for example.

So set up, can improve seal receptacle 4 and by indirect heating equipment's assembly leakproofness, avoid being spilled over by the heat transfer material.

Alternatively, the number of the sealing grooves may be multiple, and multiple sealing grooves may be distributed along the axial direction of the seal holder 4.

Further, for the convenience of the first joint 6 and the second joint 7 and the joint seat 3, in an embodiment of the present invention, the first joint 6 and the second joint 7 can both adopt a pipe thread connection mode to be connected with the joint seat 3.

As shown in fig. 3, in an embodiment of the present invention, the head of the inner tube 1 is connected to the bottom of the joint seat 3, the top of the sealing seat 4 is connected to the head of the outer tube 2, and the tail of the outer tube 2 is connected to the tail tube seat 5 by fillet welding, and the head of the sealing seat 4 is connected to the bottom of the joint seat 3 by V-shaped fillet welding.

Specifically, the utility model provides an in the embodiment when the nested heat exchanger assembles, with connector seat 3 and inner tube 1 with fillet weld welding earlier, with connector seat 3 and seal receptacle 4 with V type weld butt joint welding again, then carry out the fillet weld hookup with seal receptacle 4 and outer tube 2, insert the heat transfer fin 8 of suitable quantity, insert 1 afterbody of inner tube with tail tube seat 5 again, carry out fillet weld with tail tube seat 5 and 2 afterbody of outer tube and be connected, then reserve the arrangement space of stationary blade 9 according to the length of whole nested heat exchanger, with heat transfer fin 8 with suitable distance spot welding in outer tube 2, at last with first joint 6 and second joint 7 with connector seat 3 with pipe thread connection.

So set up, can guarantee that all welds are outside welding seam, improve operating space, reduce welding seam quantity, improve key solder joint welding seam continuity, improve the welded seal effect, guarantee structural reliability.

The nested heat exchanger provided by the embodiment of the utility model can adjust the size according to the actual use space, thereby improving the utilization rate of the space; meanwhile, the bending overflowing section can be eliminated, so that the problem of weak local strength caused by uneven inner and outer wall materials after the bending section is subjected to thermal processing and bending can be avoided, the slit sealing welding problem can be eliminated, the manufacturing process and the manufacturing cost are effectively reduced, the assembly and disassembly are convenient, and the reliability and the applicability are high.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A nested heat exchanger, the heat exchanger comprising: the pipe joint comprises an inner pipe (1), an outer pipe (2), a joint seat (3), a sealing seat (4), a tail pipe seat (5), a first joint (6) and a second joint (7);

the head of the inner pipe (1) is connected with the bottom of the joint seat (3), the top of the sealing seat (4) is connected with the bottom of the joint seat (3), the bottom of the sealing seat (4) is connected with the head of the outer tube (2), the outer tube (2) is sleeved outside the inner tube (1), and a set space is formed between the inner wall of the outer pipe (2), the inner wall of the sealing seat (4) and the outer wall of the inner pipe (1), the tail part of the inner tube (1) and the tail part of the outer tube (2) are respectively connected with the tail tube seat (5), the tail end of the inner tube (1) is provided with a notch which is communicated with the inner space of the inner tube (1) and the set space, the top of the joint seat (3) is respectively provided with the first joint (6) and the second joint (7), the first joint (6) is in communication with the set space, and the second joint (7) is in communication with the interior space.

2. The nested heat exchanger according to claim 1, wherein the inner tube (1) and the outer tube (2) are both circular-shaped structures, an annular space is formed between the inner wall of the outer tube (2) and the outer wall of the inner tube (1), and the cross-sectional area of the annular space is larger than the inner diameter cross-sectional area of the inner tube (1).

3. The nested heat exchanger according to claim 1 or 2, further comprising a plurality of heat exchange fins (8), the plurality of heat exchange fins (8) being mounted on an outer wall of the outer tube (2).

4. The nested heat exchanger according to claim 3, wherein the heat exchange fins (8) are spot welded to the outer wall of the outer tube (2).

5. The nested heat exchanger according to claim 1, further comprising a fixing plate (9), the fixing plate (9) being mounted on an outer wall of the outer tube (2) for connection to a device to be heat exchanged.

6. The nested heat exchanger according to claim 1, wherein the number of slots is four, four of the slots being evenly distributed along the outer circumference of the inner tube (1).

7. The nested heat exchanger according to claim 1, wherein the outer wall of the seal holder (4) is provided with a seal groove, and a seal (10) is detachably mounted on the seal groove.

8. The nested heat exchanger of claim 7, wherein the seal groove is plural.

9. The nested heat exchanger according to claim 1, wherein the first joint (6) and the second joint (7) are each connected to the joint base (3) by means of a pipe thread connection.

10. The nested heat exchanger according to claim 1, wherein the head of the inner tube (1) is connected with the bottom of the joint seat (3), the top of the sealing seat (4) is connected with the head of the outer tube (2), and the tail of the outer tube (2) is connected with the tail tube seat (5) by fillet welding, and the head of the sealing seat (4) is connected with the bottom of the joint seat (3) by V-shaped fillet welding.

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