CN211854992U - Shell-and-tube heat exchanger - Google Patents
Shell-and-tube heat exchanger Download PDFInfo
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- CN211854992U CN211854992U CN201922495414.7U CN201922495414U CN211854992U CN 211854992 U CN211854992 U CN 211854992U CN 201922495414 U CN201922495414 U CN 201922495414U CN 211854992 U CN211854992 U CN 211854992U
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- 238000013016 damping Methods 0.000 claims abstract description 28
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000035939 shock Effects 0.000 claims description 24
- 238000010521 absorption reaction Methods 0.000 claims description 17
- 238000012546 transfer Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Abstract
The utility model provides a shell and tube heat exchanger. Wherein, shell-and-tube heat exchanger includes: the shell-and-tube heat exchanger comprises a shell-and-tube heat exchanger body, wherein a shell pass inlet and a shell pass outlet are respectively arranged at two ends of the shell-and-tube heat exchanger body; the shell pass inlet and/or the shell pass outlet are/is correspondingly provided with a damping support plate, the outer periphery of the damping support plate is attached to and supported on the inner peripheral wall of the shell-and-tube heat exchanger body, the damping support plate is provided with a positioning area and a circulation area, and at least one through hole is arranged in the circulation area; the heat exchange tube is fixed in the positioning area. The utility model provides a shell and tube heat exchanger tube bundles produce the problem of vibrations easily among the prior art.
Description
Technical Field
The utility model relates to a shell and tube type heat exchanger equipment field particularly, relates to a shell and tube type heat exchanger.
Background
The shell-and-tube heat exchanger is a common device in the field of petrochemical industry, and the conventional shell-and-tube heat exchanger generally uses an arched baffle plate. In order to provide a heat exchanger with high heat transfer capacity and to reduce fouling, higher design flow rates are used as much as the process will allow. However, in some cases, due to structural limitation or large shell pass flow, the distance between the baffles at the inlet and outlet of the shell pass is large, so that the tube bundle is easy to vibrate under the impact of high flow velocity at the inlet and outlet, and the damage probability of equipment is increased.
Therefore, the problem that the heat exchange tube bundle of the shell-and-tube heat exchanger is easy to vibrate in the prior art is solved.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a shell and tube heat exchanger to solve the problem of vibration easily generated in the heat exchange tube bundle of the shell and tube heat exchanger in the prior art.
In order to achieve the above object, according to an aspect of the present invention, there is provided a shell-and-tube heat exchanger, including: the shell-and-tube heat exchanger comprises a shell-and-tube heat exchanger body, wherein a shell pass inlet and a shell pass outlet are respectively arranged at two ends of the shell-and-tube heat exchanger body; the shell pass inlet and/or the shell pass outlet are/is correspondingly provided with a damping support plate, the outer periphery of the damping support plate is attached to and supported on the inner peripheral wall of the shell-and-tube heat exchanger body, the damping support plate is provided with a positioning area and a circulation area, and at least one through hole is arranged in the circulation area; the heat exchange tube is fixed in the positioning area.
Furthermore, on the damping support plate corresponding to the shell pass inlet, the flow area is close to the shell pass inlet relative to the positioning area; and/or a damper support plate corresponding to the shell-side outlet, the flow-through region being adjacent to the shell-side outlet relative to the positioning region.
Further, the damper support plate is perpendicular to the inner peripheral wall of the shell-and-tube heat exchanger body.
Furthermore, the opening of the shell pass inlet is divided into two parts with equal areas by a damping support plate corresponding to the shell pass inlet; and/or the damping support plate corresponding to the shell pass outlet divides the opening of the shell pass outlet into two parts with equal areas.
Furthermore, shell side import and shell side exit all correspond and are provided with the shock attenuation backup pad, and shell-and-tube heat exchanger still includes a plurality of baffling boards, and a plurality of baffling board intervals set up between two shock attenuation backup pads.
Further, the area of the positioning region is larger than the area of the flow-through region.
Furthermore, a plurality of through holes are formed in the positioning area, and at least part of the through holes are used for the heat exchange tubes to penetrate, so that the shock absorption supporting plate supports and positions the heat exchange tubes.
Furthermore, the plurality of via holes are divided into a plurality of groups, a plurality of via holes are arranged in the same group, a part of via holes in the same group are used for the heat exchange tubes to pass through, and the other part of via holes in the same group are used for overflowing.
Further, all the through holes are independent of each other, a part of the through holes are used for the heat exchange tubes to pass through, and the other part of the through holes are used for overflowing.
Further, the area of the via hole for overflowing is smaller than that of the via hole for fixing the heat exchange tube.
Further, the edge of the via hole is also provided with a notch to form an overcurrent gap.
Use the technical scheme of the utility model, shell-and-tube heat exchanger in this application includes: the shell-and-tube heat exchanger comprises a shell-and-tube heat exchanger body, at least two damping supporting plates and a heat exchange tube. The two ends of the shell-and-tube heat exchanger body are respectively provided with a shell pass inlet and a shell pass outlet; the shell pass inlet and/or the shell pass outlet are/is correspondingly provided with a damping support plate, the outer periphery of the damping support plate is attached to and supported on the inner peripheral wall of the shell-and-tube heat exchanger body, the damping support plate is provided with a positioning area and a circulation area, and at least one through hole is arranged in the circulation area; the heat exchange tube is fixed in the positioning area.
When the shell-and-tube heat exchanger with the structure is used, the damping support plate and the heat exchange tube are respectively arranged inside the shell-and-tube heat exchanger body. The specific arrangement mode is that the heat exchange tubes respectively penetrate through the damping supporting plates and are connected with the tube plates inside the shell-and-tube heat exchanger body; the damping support plates are respectively arranged at a shell pass inlet and a shell pass outlet of the shell-and-tube heat exchanger body. When heat exchange media enter the shell-and-tube heat exchanger body from the shell side inlet, the heat exchange media can pass through the shock absorption supporting plate through the circulation area of the shock absorption supporting plate to exchange heat, and can pass through the shock absorption supporting plate from the circulation area to be discharged to the shell side outlet at the shell side outlet. Because the existing shell-and-tube heat exchanger is not provided with baffle plates at the shell pass inlet and the shell pass outlet, no support is usually arranged at the shell pass inlet and the shell pass outlet to support the heat exchange tube bundle, so that the heat exchange tube bundle at the shell pass inlet and the shell pass outlet can vibrate when the flow rate of the heat exchange medium at the shell pass is high. Therefore, after the shock absorption supporting plate is arranged in the shell-and-tube heat exchanger body, the heat exchange tube bundle can be effectively prevented from vibrating.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural view of a shell-and-tube heat exchanger according to one embodiment of the present invention; and
fig. 2 shows a schematic structural view of a damper support plate of a shell-and-tube heat exchanger in the present application.
Wherein the figures include the following reference numerals:
10. a shell-and-tube heat exchanger body; 11. a shell side inlet; 12. a shell-side outlet; 20. a shock-absorbing support plate; 21. a positioning area; 211. a via hole; 22. a flow-through region; 221. an overflowing hole; 30. a heat exchange pipe; 40. and (7) a baffle plate.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.
In order to solve the problem that vibration is easily generated by a heat exchange tube bundle of a shell-and-tube heat exchanger in the prior art, the application provides a shell-and-tube heat exchanger.
As shown in fig. 1 and 2, the shell-and-tube heat exchanger in the present application includes: a shell and tube heat exchanger body 10, at least two vibration damping support plates 20, and heat exchange tubes 30. The two ends of the shell-and-tube heat exchanger body 10 are respectively provided with a shell pass inlet 11 and a shell pass outlet 12; the shell side inlet 11 and the shell side outlet 12 are correspondingly provided with a damping support plate 20, the outer periphery of the damping support plate 20 is attached to and supported on the inner peripheral wall of the shell-and-tube heat exchanger body 10, the damping support plate 20 is provided with a positioning area 21 and a flow area 22, and at least one through-flow hole 221 is arranged in the flow area 22; the heat exchange pipe 30 is fixed in the positioning region 21.
When the shell-and-tube heat exchanger with the above structure is used, the damper support plate 20 and the heat exchange tube 30 are respectively disposed inside the shell-and-tube heat exchanger body 10. The specific arrangement mode is that the heat exchange tubes 30 respectively penetrate through the shock absorption support plates 20 and are connected with the tube plates inside the shell-and-tube heat exchanger body 10; damper support plates 20 are provided at the shell-side inlet 11 and the shell-side outlet 12 of the shell-and-tube heat exchanger body 10, respectively. When the heat exchange medium enters the shell-and-tube heat exchanger body 10 from the shell-side inlet 11, the heat exchange medium can pass through the damper support plate 20 through the flow area 22 of the damper support plate 20 to exchange heat, and can be discharged from the flow area 22 to the shell-side outlet 12 through the damper support plate 20 at the shell-side outlet 12. Because the existing shell-and-tube heat exchanger is usually not provided with the baffle plate 40 at the shell-side inlet 11 and the shell-side outlet 12, there is usually no support at the shell-side inlet 11 and the shell-side outlet 12 to support the bundle of heat exchange tubes 30, which causes the bundle of heat exchange tubes 30 at the shell-side inlet 11 and the shell-side outlet 12 to vibrate when the flow rate of the heat exchange medium at the shell side is high. Therefore, the bundle of heat exchange tubes 30 can be effectively prevented from being vibrated after the damper support plate 20 is provided inside the shell-and-tube heat exchanger body 10.
Specifically, on damper support plate 20 corresponding to shell-side inlet 11, flow-through region 22 is adjacent to shell-side inlet 11 relative to positioning region 21. Because the flow direction of the heat exchange medium at the shell pass inlet 11 is changed and concentrated, the shock absorption supporting plate 20 is arranged at the position, so that the stability of the heat exchange tube 30 can be effectively improved, the vibration of the heat exchange tube 30 is reduced, and the damage of the heat exchange tube 30 is avoided.
Specifically, on damper support plate 20 corresponding to shell-side outlet 12, flow-through region 22 is adjacent to shell-side outlet 12 relative to positioning region 21. Because the flow direction of the heat exchange medium at the shell side outlet 12 is changed and concentrated, the shock absorption supporting plate 20 is arranged at the position, the stability of the heat exchange tube 30 can be effectively improved, the vibration of the heat exchange tube 30 is reduced, and the damage of the heat exchange tube 30 is avoided.
The circulation areas 22 of the damping support plates 20 are respectively and correspondingly arranged at the positions close to the shell pass inlet 11 and the shell pass outlet 12, so that the heat exchange medium of the shell pass can be ensured to rapidly pass through the damping support plates 20 when entering the shell-and-tube heat exchanger body 10, the resistance of the heat exchange medium is reduced, and the heat exchange medium is prevented from generating turbulence at the positions of the shell pass inlet and the shell pass outlet 12 to reduce the flow velocity of the heat exchange medium.
Specifically, the damper support plate 20 is perpendicular to the inner peripheral wall of the shell-and-tube heat exchanger body 10. Through setting up like this, not only can guarantee the stability of shock attenuation backup pad 20 self, prevent that shock attenuation backup pad 20 from producing and rocking. Moreover, this arrangement also effectively enhances the supporting fixation of the damper support plate 20 to the bundle of heat exchange tubes 30, reduces the vibration generated from the bundle of heat exchange tubes 30, and prevents the bundle of heat exchange tubes 30 from being inclined.
Specifically, the damper support plate 20 corresponding to the shell-side inlet 11 divides the opening of the shell-side inlet 11 into two parts of equal area; through setting up like this, can guarantee that heat transfer medium gets into shell and tube type heat exchanger body 10 when inside, can get into by the both sides of shock attenuation backup pad 20 uniformly, can make the inside heat transfer of shell and tube type heat exchanger body 10 even like this, make the heat transfer medium of shell side can restraint the heat exchange tube 30 that is close to the tube sheet part and carry out the heat transfer of same effect, reduce the inhomogeneity of the inside temperature distribution of shell and tube type heat exchanger body 10 to reinforcing heat exchanger life-span.
Specifically, the damper support plate 20 corresponding to the shell-side outlet 12 divides the opening of the shell-side outlet 12 into two portions of equal area. Through the arrangement, the shell pass heat exchange medium can exchange heat for the heat exchange tube 30 bundle of the shell pass outlet 12 close to the tube plate. And through setting up like this and can also reduce heat transfer medium's flow resistance, guarantee that shell side heat transfer medium can discharge to shell side export 12 outsidely more smoothly.
Specifically, shell-and-tube heat exchangers are provided with a plurality of baffle plates 40 at intervals between two damper support plates 20, wherein the damper support plates 20 are correspondingly arranged at the shell side inlet 11 and the shell side outlet 12. Through the arrangement, the shell-side heat exchange medium can be ensured to stably flow between the baffle plates 40, so that the heat exchange effect is ensured, and the baffle plates 40 are arranged to play a role in supporting and damping the heat exchange pipe 30.
Optionally, the area of the positioning region 21 is larger than the area of the flow-through region 22. Because the number of the heat exchange tubes 30 in the shell-and-tube heat exchanger is large, and in order to ensure the strength of the vibration damping support plate 20 and prevent the vibration damping support plate 20 from being damaged, the area of the positioning area 21 can be set to be larger than the surface of the circulation area 22.
Specifically, a plurality of through holes 211 are arranged in the positioning area 21, and at least part of the through holes 211 are used for the heat exchange tubes 30 to pass through, so that the shock absorption support plate 20 supports and positions the heat exchange tubes 30. Through setting up like this, can reduce the resistance that shock attenuation backup pad 20 produced to shell side heat transfer medium more effectively, reduce the speed loss that shell side heat transfer medium produced when passing through shock attenuation backup pad 20.
Specifically, the plurality of via holes 211 are divided into a plurality of groups, and a plurality of via holes 211 are arranged in the same group, a part of via holes 211 in the same group are used for the heat exchange tubes 30 to pass through, and the other part of via holes 211 in the same group are used for overflowing. By such an arrangement, the heat exchange medium can uniformly pass through the damper support plate 20, so that the stability between the damper support plate 20 and the heat exchange pipe 30 can be effectively ensured.
Specifically, all the via holes 211 are independent of each other, and a part of the via holes 211 is passed by the heat exchange pipes 30, and another part of the via holes 211 is used for overflowing. The via holes 211 are independent of each other, so that the influence of the heat exchange medium on the heat exchange pipe 30 when the heat exchange medium passes through the shock absorption support plate 20 can be reduced, and the support effect of the shock absorption support plate 20 on the heat exchange pipe 30 can be enhanced.
Specifically, the area of the via hole 211 for the overcurrent is smaller than the area of the via hole 211 for the fixed heat exchange pipe 30. Through setting up like this, can further reduce the vibrations that heat transfer medium produced heat exchange pipe 30 bundle when passing through shock attenuation backup pad 20, guarantee that shock attenuation backup pad 20 supports heat exchange pipe 30 more stably.
Specifically, the edge of the via 211 is also provided with a notch to form an over-current gap. By the arrangement, the heat exchange tubes 30 in the heat exchange tube bundle can be grouped and fixed, so that the phenomenon that a single heat exchange tube 30 generates vibration is reduced. And by the arrangement, the transverse flow of the heat exchange medium can be more effectively facilitated. In the process of processing the vibration absorption support plate 20, the through holes 211 for the heat exchange tubes 30 to pass through can be processed simultaneously with the baffle plate 40, and then the other parts of the vibration absorption support plate 20 can be processed. Also, the via holes 211 may be provided in various forms, such as petal holes, communication holes, etc., according to different specific use cases.
As shown in fig. 1, the heat exchange tubes 30 have support pitches of 4 types, L1, L2, L3(L3 '), L4 (L4'). Wherein L3 and L3 ', L4 and L4' may be different. In the case of conventional baffle 40 support, the best support is the baffle 40 support spacing L1, L2 is about 2 times L1; in the areas of the shell-side inlet 11 and the shell-side outlet 12, the support distance for better support is L3(L3 '), and L4 (L4') is the worst support state. Typically L3 (L3') is greater than L1.
As shown in fig. 1, after the shock-absorbing support plate 20 is applied, the support of the shell-side inlet 11 and the shell-side outlet 12 is strengthened, and the original support distance L3 (L3') becomes smaller by about half; more importantly, the L4(L4 ') with the largest unsupported span was reduced to L5 (L5'). Thus, the support of the bundle of heat exchange tubes 30 in the region of both the shell-side inlet 11 and the shell-side outlet 12 is significantly improved.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
1. the unsupported distance of the heat exchange tubes 30 bundles is reduced;
2. vibration generated by the heat exchange tube 30 bundles is effectively reduced;
3. the heat exchange performance of the shell-and-tube heat exchanger is improved and the service life is prolonged.
It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A shell and tube heat exchanger, comprising:
the heat exchanger comprises a shell-and-tube heat exchanger body (10), wherein a shell side inlet (11) and a shell side outlet (12) are respectively arranged at two ends of the shell-and-tube heat exchanger body (10);
the shell-side heat exchanger comprises at least two shock absorption support plates (20), wherein the shock absorption support plates (20) are correspondingly arranged at the shell-side inlet (11) and/or the shell-side outlet (12), the outer peripheries of the shock absorption support plates (20) are attached to and supported on the inner peripheral wall of the shell-and-tube heat exchanger body (10), the shock absorption support plates (20) are provided with a positioning area (21) and a flow area (22), and at least one through hole (221) is formed in the flow area (22);
the heat exchange tube (30), the heat exchange tube (30) is fixed in the location area (21).
2. A shell and tube heat exchanger according to claim 1,
the damping support plate (20) corresponding to the shell side inlet (11), and the flow-through area (22) is close to the shell side inlet (11) relative to the positioning area (21); and/or
The flow-through region (22) is located close to the shell-side outlet (12) relative to the positioning region (21) on the damper support plate (20) corresponding to the shell-side outlet (12).
3. A shell and tube heat exchanger according to claim 1, characterized in that the vibration damper support plates (20) are perpendicular to the inner peripheral wall of the shell and tube heat exchanger body (10).
4. A shell and tube heat exchanger according to claim 1,
the damping support plate (20) corresponding to the shell side inlet (11) divides an opening of the shell side inlet (11) into two parts with equal areas; and/or
The shock-absorbing support plate (20) corresponding to the shell side outlet (12) divides the opening of the shell side outlet (12) into two parts with equal areas.
5. A shell and tube heat exchanger according to claim 1, characterized in that the damper support plates (20) are provided at both the shell side inlet (11) and the shell side outlet (12) correspondingly, and further comprising a plurality of baffle plates (40), and the plurality of baffle plates (40) are provided at intervals between the two damper support plates (20).
6. A shell and tube heat exchanger according to claim 1, characterized in that the area of the positioning zone (21) is larger than the area of the flow-through zone (22).
7. A shell and tube heat exchanger according to any one of claims 1 to 6, characterized in that a plurality of through holes (211) are provided in the positioning area (21), and at least part of the through holes (211) are penetrated by the heat exchange tubes (30) so that the vibration damping support plate (20) supports and positions the heat exchange tubes (30).
8. A shell and tube heat exchanger according to claim 7, characterized in that the plurality of through holes (211) are divided into a plurality of groups, and a plurality of through holes (211) are provided in one group, wherein a part of the through holes (211) in one group are used for the heat exchange tubes (30) to pass through, and another part of the through holes (211) in one group are used for overflowing.
9. A shell and tube heat exchanger according to claim 7, characterized in that all the through holes (211) are independent from each other, and a part of the through holes (211) are passed by the heat exchange tubes (30) and another part of the through holes (211) are used for overflowing.
10. A shell and tube heat exchanger according to claim 9, characterized in that the area of the through holes (211) for flow-through is smaller than the area of the through holes (211) for fixing the heat exchange tubes (30).
11. A shell and tube heat exchanger according to claim 7, characterized in that the edges of the through holes (211) are also provided with notches to form an overflow gap.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201922495414.7U CN211854992U (en) | 2019-12-31 | 2019-12-31 | Shell-and-tube heat exchanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201922495414.7U CN211854992U (en) | 2019-12-31 | 2019-12-31 | Shell-and-tube heat exchanger |
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CN211854992U true CN211854992U (en) | 2020-11-03 |
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CN201922495414.7U Active CN211854992U (en) | 2019-12-31 | 2019-12-31 | Shell-and-tube heat exchanger |
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Effective date of registration: 20230601 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: PetroChina Company Limited Patentee after: Daqing Petrochemical Machinery Factory Co.,Ltd. Address before: 100007 intercontinental building, 16 ande Road, Dongcheng District, Beijing 100011 Patentee before: PetroChina Company Limited |