Heat exchanger

Abstract

The heat exchanger comprises a shell and a heat exchange tube located in the shell, the shell comprises a containing space, a shell pass liquid inlet, a shell pass liquid outlet, a tube pass liquid inlet and a tube pass liquid outlet, the shell pass liquid inlet and the shell pass liquid outlet are communicated with the containing space, and a first partition plate and a second partition plate which are arranged in the axial direction of the shell in a spaced mode are arranged in the containing space. A heat exchange area is arranged between the first partition plate and the second partition plate, and the heat exchange pipe exchanges heat in the heat exchange area. The outer side wall of the first partition plate is matched with the inner wall of the shell, the first partition plate is provided with a first channel penetrating through the upper surface and the lower surface of the first partition plate, and the first channel communicates with the space above and below the first partition plate. The outer side wall of the second partition plate and the inner wall of the shell are arranged at intervals to form a second channel, and the second channel communicates with the space above and below the second partition plate. The channels can guide the shell pass liquid to be fully distributed in the whole containing space, so that the heat exchange tubes in different areas can exchange heat with the shell pass liquid, the shell pass liquid directionally flows according to the flow channels, and rapid flowing and updating of the shell pass liquid are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange technical field, especially a kind of heat exchanger. BACKGROUND

[0002] Heat exchanger is the key equipment for heat transfer between fluids in industrial production, and its performance directly affects the efficiency and safety of system. As shown in the tangential double-liquid inlet heat exchanger in the prior Chinese utility model patent CN201320079036.4, including shell side, tube side, cooling liquid inlet and cooling liquid outlet, tube side 3 is installed in the cavity of shell side 2, first cooling liquid inlet 1 is provided on the upper side of shell side 2 tangentially, and second cooling liquid inlet 5 is provided on the other side of the upper side of shell side 2, opposite to first cooling liquid inlet 1, first and second cooling liquid inlets are used for injecting cooling liquid or connecting cooling liquid pipeline outlet, and cooling liquid outlet 4 is provided at the bottom of shell side 2 for discharging cooling liquid or connecting cooling liquid pipeline inlet to form circulating flow.

[0003] In semiconductor applications, heat exchanger is used for heating or cooling wet chemicals, wherein the tube side liquid fluid is acid, alkali or ultrapure water, and the shell side liquid fluid is oil or water for heating or cooling as needed. However, in the above-mentioned patent, the cooling liquid inlet and the cooling liquid outlet cannot guarantee the rapid flow and update of the shell side liquid fluid in the shell, and there is an unreasonable problem in layout distribution, which leads to that the shell side liquid cannot efficiently heat or cool the tube side liquid.

[0004] Therefore, it is necessary to improve the structure of heat exchanger and optimize the flow of shell side liquid in the containing space, so that each heat exchange tube in the containing space can obtain good heat exchange efficiency. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a heat exchanger, which solves the problem of low heat exchange efficiency of the existing heat exchanger.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A heat exchanger, comprising a shell and a heat exchange tube located in the shell, the shell comprises a containing space, a shell side liquid inlet and a shell side liquid outlet communicated with the containing space, and a tube side liquid inlet and a tube side liquid outlet, a first partition plate and a second partition plate are arranged in the containing space along the axial direction of the shell, the heat exchange area is provided between the first partition plate and the second partition plate, and the heat exchange tube performs heat exchange in the heat exchange area.

[0008] The outer side wall of the first partition plate is matched with the inner wall of the shell, the first partition plate has a first channel penetrating through its upper and lower surfaces, and the first channel communicates the space above and below the first partition plate.

[0009] The outer side wall of the second partition plate is spaced apart from the inner wall of the shell to form a second channel, the second channel being in communication with spaces above and below the second partition plate; the first channel is in communication with the second channel.

[0010] The heat exchanger of the utility model, between the shell side liquid inlet and the shell side liquid outlet, sets up the first partition plate and the second partition plate, can divide the big space in the containing space to form one or more small spaces, sets up the first channel on the first partition plate, the second channel is set up to the circumferential side of the second partition plate, promotes the directional movement of the shell side liquid in the containing space in several small spaces, the shell side liquid in the heat exchange area flows fast and is constantly updated, and the heat exchange tube can be fully heat exchanged in the heat exchange area, avoids the phenomenon that cannot be fully heat exchanged due to the shell side liquid retention in the periphery of the tube body; second, the flow channel design of the utility model is relatively tortuous, when the shell side liquid flows through each turning place, due to the inertial effect, vortex and velocity gradient are generated at the corner, which helps to break the boundary layer, promotes the mixing inside the fluid, and enhances the heat transfer effect; further, the flow path design of the utility model can prolong the shell side liquid flow path, can contact more heat exchange tubes in the limited space, has greater heat exchange surface area, so that the shell side liquid and the tube side liquid are fully heat exchanged, and the heat exchange efficiency is improved.

[0011] Preferably, a third partition plate is further arranged in the containing space, the third partition plate is arranged along the axial direction, and the first partition plate and the second partition plate are respectively arranged at different heights of the third partition plate; a plurality of third partition plates are distributed around the circumferential direction of the first partition plate and the second partition plate, so as to divide each heat exchange area into a plurality of sector-shaped parts.

[0012] Each sector-shaped part is in communication with the first flow channel and the second flow channel, the shell side liquid can diffuse or converge along the sector-shaped part, further guide the flow direction of the shell side liquid, promote the shell side liquid to be more uniformly distributed in each sector-shaped part, reduce the situation that part of the shell side liquid leaves the heat exchanger without being fully heat exchanged, and reduce the fluid dead zone, so as to ensure that the shell side liquid fully flows in the whole containing space; in addition, due to the guiding effect of the sector-shaped part, the overall pressure drop can be controlled in a reasonable range while ensuring sufficient heat exchange efficiency, and the conveying energy consumption is reduced.

[0013] Preferably, the outer side wall of the third partition plate is matched with the inner wall of the shell, so that the shell side liquid in the same sector is directly moved axially to the next sector, avoiding the shell side liquid of adjacent sectors in the same heat exchange region exchanging with each other near the inner wall of the shell, which can reduce turbulence and turbulence on the one hand, and if the shell side liquid of adjacent sectors in the same heat exchange region exchanges with each other near the inner wall of the shell, part of the shell side liquid will flow circumferentially near the inner wall of the shell, which may interfere with the axial flow in the shell side liquid second channel, thereby affecting the rapid flow and update of the shell side liquid in the containing space, and avoiding part of the shell side liquid from staying in the containing space for a long time.

[0014] Preferably, the inner side walls of the third partition plates are spaced apart from each other, which corresponds to the first channel on the first partition plate, so that the shell side liquid in different sectors in the same heat exchange region can diffuse or converge at the inner side walls of the third partition plates, which helps to improve the temperature uniformity of the shell side liquid in the same heat exchange region, and avoid the shell side liquid in a sector from being supercooled or overheated; it can also reduce the risk of deformation or damage of the third partition plate due to excessive temperature gradient.

[0015] Preferably, the outer side wall of the second partition plate is provided with a plurality of lugs, the outer side wall of the lug is matched with the inner wall of the shell, and the second channel is located between adjacent lugs; the purpose of setting the lugs is also to avoid the shell side liquid of adjacent sectors in the same heat exchange region exchanging with each other near the inner wall of the shell, and to promote more shell side liquid to flow axially in the second channel rather than circumferentially; on the other hand, the lugs are beneficial to the limiting of the second partition plate and the inner wall of the shell, and are beneficial to limiting the shaking of the second partition plate or the whole composed of the first partition plate, the second partition plate and the third partition plate in the shell.

[0016] Preferably, the heat exchange pipe comprises a plurality of heat exchange pipe segments located in the sector, and at least part of the heat exchange pipe segments are arranged axially in the sector, so as to make full use of the axial space in the heat exchange region, increase the contact area between the heat exchange pipe and the shell side liquid, and improve the heat exchange efficiency.

[0017] Preferably, the third partition plate is provided with a plurality of pipe penetrating holes, the heat exchange pipe penetrates through the pipe penetrating holes and extends circumferentially around the center of the first partition plate and the second partition plate; in this way, the heat exchange pipe can be uniformly distributed in the heat exchange region and fully contact and exchange heat with the shell side liquid in each sector, thereby improving the heat exchange efficiency; at the same time, the third partition plate is used to fix the heat exchange pipe, thereby improving the stability of the heat exchange pipe in the heat exchange region.

[0018] Preferably, the first partition plate and / or the second partition plate have pipe inlet holes and pipe outlet holes, the heat exchange pipe penetrates into the heat exchange region through the pipe inlet hole, and the heat exchange pipe penetrates out of the heat exchange region through the pipe outlet hole.

[0019] The first partition plate and the second partition plate are arranged in an axial direction, so that the plurality of heat exchange areas are arranged in the axial direction, and the heat exchange pipes enter and exit the heat exchange areas through the inlet pipe holes and the outlet pipe holes, so that the heat exchange pipes are evenly distributed in the axial direction in the heat exchange areas and do not occupy the space of the first channel and the second channel, thereby ensuring the installation stability of the heat exchange pipes and the heat exchange efficiency, and ensuring that the flow of the shell side liquid in the first channel and the second channel is not disturbed.

[0020] Preferably, the first partition plate and the second partition plate are fixedly connected to the third partition plate in an alternating and spaced manner, and the first partition plate is closer to the shell side liquid inlet than the second partition plate, and the top surface of the third partition plate is higher than the upper surface of the first partition plate closest to the shell side liquid inlet.

[0021] The first partition plate and the second partition plate are arranged in an alternating and spaced manner, so that the flow of the shell side liquid from one heat exchange area to another heat exchange area is radial flow, then axial movement after turning, and then radial flow after turning again, and so on, until the shell side liquid flows out of the shell side liquid outlet, thereby forming a "string" type flow channel, extending the flow path, and contacting more heat exchange pipes in a limited space, thereby having a larger heat exchange surface area; the first partition plate closest to the shell side liquid inlet enables the shell side liquid to quickly enter the first channel and then contact and exchange heat with the heat exchange pipes between the first partition plate and the second partition plate; and the upper surface of the first partition plate closest to the shell side liquid inlet has a portion of the axial position of the heat exchange pipe, the top surface of the third partition plate is higher than the upper surface of the first partition plate closest to the shell side liquid inlet, so that the shell side liquid from the shell side liquid inlet can be quickly and uniformly distributed and contact and exchange heat with the portion of the heat exchange pipe, thereby fully utilizing the axial space in the containing space and improving the heat exchange efficiency.

[0022] Preferably, the shell side liquid outlet is located at the bottom of the shell, and the bottom surface of the third partition plate is lower than the lower surface of the first partition plate or the second partition plate closest to the shell side liquid outlet, so that the first partition plate or the second partition plate is arranged in a spaced manner with the bottom of the shell, and the channel communicating with the shell side liquid outlet is arranged to ensure smooth outflow of the shell side liquid after heat exchange, and to realize rapid renewal of the shell side liquid in the containing space.

[0023] Preferably, the first partition plate and the second partition plate are arranged in an alternating and spaced manner, so that the first partition plate and the second partition plate are arranged in an alternating and spaced manner, and the first partition plate is closer to the shell side liquid inlet than the second partition plate, and the top surface of the third partition plate is higher than the upper surface of the first partition plate closest to the shell side liquid inlet.

[0024] The third partition plate is provided with a radial extending clamping groove, and the first partition plate and the second partition plate are respectively clamped and fixed with the clamping groove.

[0025] With the above setting mode, installation and disassembly are facilitated, installation time can be greatly shortened, and construction efficiency is improved; and the shell side liquid can be guaranteed to be separated from each other in the circumferential direction and communicated only through the first channel and the second channel, so that the guiding effect on the shell side liquid is guaranteed; the clamping mode also has higher flexibility, and is suitable for various application scenarios; the three baffles are clamped with each other, have higher structural stability, and guarantee the stability of the flow channel and the heat exchange pipe therebetween, so that the heat exchange efficiency is guaranteed.

[0026] Compared with the prior art, the heat exchanger has at least the following beneficial effects:

[0027] The heat exchanger of the utility model, first baffle and second baffle are arranged between shell side liquid import and shell side liquid export, make the shell side liquid can turn after flowing diffusion along one direction continues along another direction, form relatively tortuous flow channel, heat exchange pipe is arranged in the heat exchange area between first baffle and second baffle, and first channel and second channel communicate each heat exchange area respectively, and shell side liquid prolongs the flow path, can contact more heat exchange pipe in limited space, has greater heat exchange surface area, make the shell side liquid and tube side liquid fully heat exchange, improve heat exchange efficiency, and because the position of first channel and second channel is different, can guide the shell side liquid to fill up the whole containing space, make the heat exchange pipe of different area all can heat exchange with the shell side liquid, and the shell side liquid flows according to the flow channel orientation, realize the shell side liquid fast flow and update, avoid the situation that part of shell side liquid does not fully heat exchange and leaves the heat exchanger, in addition, when the shell side liquid flows through each turning position, due to inertia effect, vortex and velocity gradient will be generated at the corner, which helps to break the boundary layer, promotes the mixing of fluid inside, and enhances the heat transfer effect. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0029] Figure 1 It is a structure schematic view of the heat exchanger of the utility model embodiment one.

[0030] Figure 2 It is an internal structure schematic view of the heat exchanger of the utility model embodiment one.

[0031] Figure 3 It is an internal structure schematic view of the heat exchanger of the utility model embodiment two.

[0032] Figure 4The connection schematic view of the first partition plate, the second partition plate and the third partition plate of the second embodiment of the present utility model.

[0033] Figure 5 The connection schematic view of the first partition plate, the second partition plate and the third partition plate of the second embodiment of the present utility model from another angle.

[0034] Figure 6 The internal structure schematic view of the heat exchanger of the third embodiment of the present utility model.

[0035] Explanation of reference signs

[0036] 10, shell; 11, containing space; 12, shell side liquid inlet; 13, shell side liquid outlet; 14, tube side liquid inlet; 15, tube side liquid outlet; 16, heat exchange area; 161, fan-shaped part;

[0037] 20, heat exchange tube; 21, heat exchange tube section;

[0038] 30, first partition plate; 31, first channel; 32, pipe inlet hole; 33, pipe outlet hole; 34, clamping groove;

[0039] 40, second partition plate; 41, second channel;

[0040] 50, third partition plate; 51, pipe passing hole; 52, hoisting hole. DETAILED DESCRIPTION

[0041] The technical solutions of the present utility model will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present utility model, not all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0042] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0044] As Figure 1 And Figure 2 The utility model discloses a heat exchanger, including shell 10 and the heat exchange pipe in shell 10, shell 10 includes containing space 11, with containing space 11 The shell side liquid inlet 12 and shell side liquid outlet 13, and the tube side liquid inlet 14 and tube side liquid outlet 15, containing space 11 is used to contain heat exchange pipe and shell side liquid, heat exchange pipe is communicated with tube side liquid inlet 14 and tube side liquid outlet 15, containing space 11 with shell side liquid inlet 12 and shell side liquid outlet 13, heat exchanger works, and the tube side liquid passes through tube side liquid inlet 14 and enters the heat exchange pipe, and the shell side liquid enters containing space 11 by shell side liquid inlet 12, and the shell side liquid and tube side liquid have temperature difference, and the heat exchange pipe is made of heat conducting material, therefore, when the shell side liquid contacts heat exchange pipe, can heat exchange with the tube side liquid in it, and the specific heat exchange process can be that the tube side liquid is heated, and the shell side liquid is cooled, or the tube side liquid is cooled, and the shell side liquid is heated.

[0045] As Figure 2 In the embodiment one shown in the figure, containing space 11 is equipped with first baffle 30 and second baffle 40 along the axial direction interval arrangement of shell 10, and there is heat exchange area 16 between first baffle 30 and second baffle 40, and heat exchange pipe carries out heat exchange in this heat exchange area 16, and the shell side liquid flows into heat exchange area 16 and between adjacent heat exchange area 16 after flowing in by shell side liquid inlet 12, and then flows out from shell side liquid outlet 13, in this process, the flow of shell side liquid is guided through first baffle 30 and second baffle 40, specifically, the outer side wall of first baffle 30 is adapted with the inner wall of shell 10, and first baffle 30 has first passageway 31 that penetrates its upper and lower surfaces, and the first passageway 31 communicates the space above and below first baffle 30, and the outer side wall of second baffle 40 is spaced apart from the inner wall of shell 10 to form second passageway 41, and second passageway 41 communicates the space above and below second baffle 40, and first passageway 31 is communicated with second passageway 41.

[0046] Due to the first partition plate 30 and the second partition plate 40 arranged in the containing space 11, the shell side liquid can flow and diffuse in one direction and then turn to flow in another direction, forming a more tortuous flow channel. The heat exchange tubes are arranged in the heat exchange area 16 between the first partition plate 30 and the second partition plate 40. The first channel 31 and the second channel 41 are respectively connected to each heat exchange area 16. The shell side liquid prolongs the flow path and can contact more heat exchange tubes in a limited space, so that the shell side liquid and the tube side liquid can be fully heat exchanged, and the heat exchange efficiency is improved. Due to the different positions of the first channel 31 and the second channel 41, the shell side liquid can be fully distributed in the entire containing space 11, so that the heat exchange tubes in different areas can be heat exchanged with the shell side liquid, and the shell side liquid flows in a direction according to the flow channel, realizing rapid flow and renewal of the shell side liquid, avoiding the situation that part of the shell side liquid leaves the heat exchanger without being fully heat exchanged. In addition, when the shell side liquid flows through each turn, due to the inertial effect, vortex and velocity gradient are generated at the corner, which helps to break the boundary layer, promotes the mixing of the fluid inside, and enhances the heat transfer effect.

[0047] It should be noted that the outer side wall of the first partition plate 30 is matched with the inner wall of the shell 10, that is, the outer diameter corresponding to the outer side wall of the first partition plate 30 is basically equivalent to the inner diameter corresponding to the inner wall of the shell 10. The outer side wall of the first partition plate 30 can be tightly attached to the inner wall of the shell 10, or there can be an installation tolerance. Even if there is a small gap, the shell side liquid cannot flow through the gap in large quantities, at most a small amount of liquid seeps, and has no effect on the flow direction of most of the shell side liquid.

[0048] Based on the first embodiment, the heat exchanger in the second embodiment shown in Figure 3 The third partition plate 50 is arranged in the containing space 11. The first partition plate 30 and the second partition plate 40 are respectively arranged at different heights of the third partition plate 50. The third partition plate 50 is arranged along the axial direction. The third partition plate 50 is arranged around the first partition plate 30 and the second partition plate 40 in a circumferential direction to divide each heat exchange area 16 into a plurality of sector-shaped parts 161. Each sector-shaped part 161 is connected to the first flow channel and the second flow channel. The shell side liquid can diffuse or converge in the sector-shaped part 161 to further guide the flow direction of the shell side liquid and make the shell side liquid more evenly distributed in each sector-shaped part 161, reducing the situation that part of the shell side liquid leaves the heat exchanger without being fully heat exchanged, and reducing the fluid dead zone to ensure that the shell side liquid fully flows in the entire containing space 11. In addition, due to the guiding effect of the sector-shaped part 161, the overall pressure drop can be controlled within a reasonable range while ensuring sufficient heat exchange efficiency, and the energy consumption for transportation is reduced.

[0049] As preferred, it is necessary to ensure the relative independence of each sector 161 in the circumferential direction, that is, to control the circumferential flow of the shell side liquid at the sector 161 close to the inner wall of the shell 10 as little as possible, and to move as much as possible in the axial direction through the second flow channel, so in some embodiments, as shown in Figure 4 The outer side wall of the third partition plate 50 is adapted to the inner wall of the shell 10, that is, the outer diameter of the outer side wall of the third partition plate 50 corresponds to the inner diameter of the inner wall of the shell 10, and the outer side wall of the third partition plate 50 can be in close contact with the inner wall of the shell 10 or there can be an installation tolerance. Even if there is a small gap, the shell side liquid cannot flow in large quantities through the gap, at most a small amount of liquid seeps, and has no effect on the flow direction of most of the shell side liquid; as shown in Figure 4 The outer side wall of the third partition plate 50 can be flush with the outer side wall of the first partition plate 30. Of course, due to machining errors or installation errors, the outer side wall of the third partition plate 50 cannot be flush with the outer side wall of the first partition plate 30 during actual installation, and a reasonable range of errors is allowed. Such arrangement enables the shell side liquid in the same sector 161 to move directly in the axial direction to the next sector 161, avoiding the exchange of shell side liquid between adjacent sectors 161 of the same heat exchange region 16 close to the inner wall of the shell 10, which on the one hand can reduce turbulence and turbulence, and on the other hand, if the shell side liquid of adjacent sectors 161 of the same heat exchange region 16 exchanges with each other close to the inner wall of the shell 10, it will cause part of the shell side liquid to flow circumferentially close to the inner wall of the shell 10, which may interfere with the axial flow in the second passage 41 of the shell side liquid, and further affect the rapid flow and update of the shell side liquid in the containing space 11, avoiding the long-term retention of part of the shell side liquid in the containing space 11.

[0050] In another embodiment, the circumferential flow of the shell side liquid can be limited by providing a plurality of lugs on the outer side plate of the second partition plate 40. In this embodiment, the outer side wall of the third partition plate 50 can not be in contact with the inner wall of the shell 10, but there is a gap, although it can also make part of the shell side liquid flow, but the third partition plate 50 is arranged in the axial direction, the gap is relatively long and narrow, the flow resistance is large, and the outer side wall of the lug is adapted to the inner wall of the shell 10, the second passage 41 is located between adjacent lugs, the flow resistance is small, the shell side liquid preferentially flows in the axial direction, avoiding the exchange of shell side liquid between adjacent sectors 161 of the same heat exchange region 16 close to the inner wall of the shell 10, and promoting more shell side liquid to flow in the axial direction in the second passage 41 rather than in the circumferential direction, thereby guiding the flow direction of the shell side liquid; On the other hand, the lugs provided on the outer periphery of the second partition plate 40 are beneficial to the limiting of the second partition plate 40 and the inner wall of the shell 10, and are beneficial to the limiting of the second partition plate 40 or the first partition plate 30, the second partition plate 40 and the third partition plate 50 as a whole in the shell.

[0051] As shown in Figure 3 and Figure 4In the shown second embodiment, the first channel 31 is located in the center of the first partition plate 30, and the inner side walls of the plurality of third partition plates 50 are spaced apart from each other, that is, the plurality of third partition plates 50 are in communication with the first channel 31 corresponding to the central outflow space surrounding the center, avoiding interference with the shell side liquid flowing through the first channel 31 in different heat exchange regions 16, and the shell side liquid in different sectors in the same heat exchange region 16 can diffuse or converge at the inner side walls of the third partition plates 50, which helps to improve the temperature uniformity of the shell side liquid in the same heat exchange region 16, avoiding the situation that the shell side liquid in a certain sector 161 is supercooled or overheated; it can also reduce the risk of deformation or damage of the third partition plate 50 due to excessive temperature gradient.

[0052] As shown in the first embodiment, Figure 2 the heat exchange tube includes a plurality of heat exchange tube segments 21 located in each heat exchange region 16, and part of the heat exchange tube segments 21 extend circumferentially in the heat exchange region 16, and part of the heat exchange tube extends axially in the heat exchange region 16. The circumferential extension part and the axial extension part of the heat exchange tube are in communication, that is, they are the same heat exchange tube. In this way, the heat exchange tube not only utilizes the circumferential space in the heat exchange region 16, but also utilizes the axial space, thereby increasing the contact area with the shell side liquid to improve the heat exchange efficiency.

[0053] There are many ways for the heat exchange tube to enter and exit the heat exchange region 16. In some embodiments, the heat exchange tube can enter and exit the heat exchange region 16 through the first channel 31 or the second channel 41; while in the two embodiments shown in Figure 2 and Figure 3 the first partition plate 30 and / or the second partition plate 40 have a pipe inlet hole 32 and a pipe outlet hole 33, the heat exchange tube enters the heat exchange region 16 through the pipe inlet hole 32, and the heat exchange tube exits the heat exchange region 16 through the pipe outlet hole 33. The pipe inlet hole 32 and the pipe outlet hole 33 can position the heat exchange tube, so that the heat exchange tube is fixed in position in the heat exchange region 16 and is uniformly distributed, and also does not occupy the space of the first channel 31 and the second channel 41, which not only ensures the installation stability and heat exchange efficiency of the heat exchange tube, but also ensures that the shell side liquid flows in the first channel 31 and the second channel 41 without being disturbed. The part of the heat exchange tube connected to the pipe inlet hole and the pipe outlet hole 33 is an axially extending part.

[0054] While in the second embodiment shown in Figure 3 based on the combined structure of the first partition plate 30, the second partition plate 40 and the third partition plate 50, the sectors 161 are uniformly distributed in the combined structure, and the heat exchange tube includes a plurality of heat exchange tube segments 21 located in each sector 161, which exchanges heat with the shell side liquid flowing in the sector 161. As a preferred embodiment, at least part of the heat exchange tube segments 21 are arranged axially in the sector 161, so as to make full use of the axial space in the heat exchange region 16, increase the contact area between the heat exchange tube and the shell side liquid, and improve the heat exchange efficiency.

[0055] The heat exchange tube extends circumferentially in the heat exchange area 16, but the heat exchange area 16 is divided into a plurality of sector-shaped parts 161 due to the presence of the third partition plate 50, so the heat exchange tube needs to pass through the third partition plate 50, and the third partition plate 50 is provided with a plurality of pipe passing holes 51, and the heat exchange tube passes through the pipe passing holes 51 and extends circumferentially around the center of the first partition plate 30 and the second partition plate 40; in this way, the heat exchange tube can be uniformly distributed in the heat exchange area 16, and can be in full contact with the shell side liquid in each sector-shaped part 161 for heat exchange, thereby improving the heat exchange efficiency; at the same time, the third partition plate 50 is used to fix the heat exchange tube, thereby improving the stability of the heat exchange tube in the heat exchange area 16.

[0056] The first partition plate 30 and the second partition plate 40 are arranged in various ways in the axial direction, and as preferred, the first partition plate 30 and the second partition plate 40 are arranged in an alternating manner in the axial direction in the embodiment I shown in Figure 2 and the embodiment II shown in Figure 3 The first partition plate 30 and the second partition plate 40 are arranged in various ways in the axial direction, and as preferred, the first partition plate 30 and the second partition plate 40 are arranged in an alternating manner in the axial direction in the embodiment I shown in Figure 3 The first partition plate 30 is closest to the shell side liquid inlet 12, so that the shell side liquid quickly enters the first channel 31 and then contacts the heat exchange tube between the first partition plate 30 and the second partition plate 40 for heat exchange; and in the embodiment II shown in

[0057] The first partition plate 30 and the second partition plate 40 are arranged in various ways in the axial direction, and as preferred, the first partition plate 30 and the second partition plate 40 are arranged in an alternating manner in the axial direction in the embodiment I shown in Figure 4 The first partition plate 30 is closest to the shell side liquid inlet 12, so that the shell side liquid quickly enters the first channel 31 and then contacts the heat exchange tube between the first partition plate 30 and the second partition plate 40 for heat exchange; and in the embodiment II shown in

[0058] The first partition plate 30 and the second partition plate 40 are arranged in various ways in the axial direction, and as preferred, the first partition plate 30 and the second partition plate 40 are arranged in an alternating manner in the axial direction in the embodiment I shown in Figure 4As shown, the top of the third partition plate 50 is also provided with a lifting hole 52 for facilitating lifting.

[0059] As shown in the embodiment one, Figure 3 and Figure 5 As shown, the shell side liquid outlet 13 is located at the bottom of the shell 10, and the bottom surface of the third partition plate 50 is lower than the lower surface of the first partition plate 30 or the second partition plate 40 closest to the shell side liquid outlet 13, so that the first partition plate 30 or the second partition plate 40 is arranged spaced apart from the bottom of the shell 10, and a passage communicated with the shell side liquid outlet 13 is formed, so as to ensure smooth outflow of the shell side liquid after heat exchange, and realize rapid renewal of the shell side liquid in the containing space 11.

[0060] As shown in the embodiment two, Figure 4 and Figure 5 As shown in the embodiment two, the first partition plate 30 and the second partition plate 40 are provided with radially extending clamping grooves 34, and the third partition plate 50 is clamped and fixed with the clamping grooves 34 on the first partition plate 30 and the second partition plate 40, respectively. By using the above arrangement, the installation and disassembly are facilitated, the installation time is greatly shortened, and the construction efficiency is improved. Moreover, the above arrangement can ensure that the plurality of fan-shaped parts 161 are spaced apart from each other in the circumferential direction and are communicated only through the first passage 31 and the second passage 41, so as to ensure the guiding effect on the shell side liquid. The clamping mode also has higher flexibility and can adapt to various application scenarios. The three partition plates are clamped with each other, and have high structural stability, so as to ensure the stability of the flow channel and the heat exchange pipe therebetween, and ensure the heat exchange efficiency.

[0061] Of course, in other embodiments, the third partition plate 50 can also be provided with a radially extending clamping groove 34, and the first partition plate 30 and the second partition plate 40 are clamped and fixed with the clamping groove 34, respectively. Alternatively, the third partition plate 50, the first partition plate 30 and the second partition plate 40 are all provided with radially extending clamping grooves 34, and the radial length of the clamping groove 34 is half of the radial length of the third partition plate 50, so that after the first partition plate 30 is clamped with the third partition plate 50, the outer side wall is substantially aligned, and after the second partition plate 40 is clamped with the third partition plate 50, the outer side wall of the second partition plate 40 can form a second flow channel with the inner wall of the shell 10.

[0062] As shown in the embodiment two, Figure 6 The difference between the present embodiment and the embodiment one is that the present embodiment only has one heat exchange region 16. The shell side liquid in the containing space can be directed to move in the heat exchange region 16 by the partitioning effect of the first partition plate 30 and the second partition plate 40. The shell side liquid in the heat exchange region flows rapidly and is constantly renewed, so that the heat exchange pipe 20 can be fully heat exchanged in the heat exchange region 16, and the phenomenon of insufficient heat exchange caused by the shell side liquid remaining around the pipe body is avoided.

[0063] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and replacements made by those skilled in the art on the basis of the present application shall fall within the scope of protection of the present application.

Claims

1. A heat exchanger comprising a housing and heat exchange tubes located in the housing, the housing comprising a containing space, a shell side liquid inlet and a shell side liquid outlet communicating with the containing space, and a tube side liquid inlet and a tube side liquid outlet, characterized in that, The accommodating space is provided with a first partition plate and a second partition plate arranged axially and spaced apart from each other, and a heat exchange region is formed between the first partition plate and the second partition plate, and the heat exchange tube exchanges heat in the heat exchange region; The outer side wall of the first partition plate is matched with the inner wall of the shell, and the first partition plate has a first channel penetrating through the upper and lower surfaces thereof, and the first channel communicates the space above and below the first partition plate; The outer side wall of the second partition plate is spaced apart from the inner wall of the shell to form a second channel, and the second channel communicates the space above and below the second partition plate; The first channel communicates with the second channel.

2. The heat exchanger of claim 1, wherein The accommodating space is further provided with a third partition plate arranged axially, and the first partition plate and the second partition plate are respectively arranged at different heights of the third partition plate; a plurality of third partition plates are arranged around the circumferential direction of the first partition plate and the second partition plate to separate each heat exchange region into a plurality of sectors.

3. The heat exchanger of claim 2, wherein The outer side wall of the third partition plate is matched with the inner wall of the shell; and / or the inner side walls of a plurality of third partition plates are spaced apart from each other.

4. The heat exchanger of claim 2, wherein The outer side wall of the second partition plate is provided with a plurality of lugs, the outer side wall of the lug is matched with the inner wall of the shell, and the second channel is located between adjacent lugs.

5. The heat exchanger of claim 2, wherein The heat exchange tube includes a plurality of heat exchange tube segments located in the sectors, and at least part of the heat exchange tube segments are arranged axially in the sectors.

6. The heat exchanger of claim 2, wherein The third partition plate is provided with a plurality of pipe penetrating holes, and the heat exchange tube penetrates through the pipe penetrating holes and extends circumferentially around the center of the first partition plate and the second partition plate.

7. The heat exchanger according to any one of claims 1 to 6, wherein The first partition plate and / or the second partition plate have an inlet hole and an outlet hole, the heat exchange tube penetrates into the heat exchange region through the inlet hole, and the heat exchange tube penetrates out of the heat exchange region through the outlet hole.

8. The heat exchanger of claim 2, wherein A plurality of first partition plates and second partition plates are fixedly connected to the third partition plate in an alternating and spaced apart manner, and the first partition plate is closer to the shell side liquid inlet than the second partition plate, and the top surface of the third partition plate is higher than the upper surface of the first partition plate closest to the shell side liquid inlet.

9. The heat exchanger of claim 8, wherein The shell side liquid outlet is located at the bottom of the shell, and the bottom surface of the third partition plate is lower than the lower surface of the first partition plate or the second partition plate closest to the shell side liquid outlet, so that the first partition plate or the second partition plate is spaced apart from the bottom of the shell.

10. The heat exchanger of claim 2, wherein The first partition plate and the second partition plate are provided with radially extending clamping grooves, and the third partition plate is clamped and fixed with the clamping grooves on the first partition plate and the second partition plate, respectively; or the third partition plate is provided with radially extending clamping grooves, and the first partition plate and the second partition plate are clamped and fixed with the clamping grooves, respectively.

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