A cyclone support structure heat exchanger

Abstract

The utility model discloses a kind of heat exchangers of cyclone support structure, it is related to heat exchanger equipment technical field, including shell, vertical setting;Pipe plate, set in the both ends of shell, the shell one end between two pipe plates is equipped with cold fluid medium import, and the other end is equipped with cold fluid medium export;Multiple heat exchange tubes, its both ends are fixed between pipe plate and are penetrated;Upper head, lower head, respectively sealed connection in the both sides opening of shell, the both ends of each heat exchange tube are all corresponding to connect upper head and lower head, and upper head is equipped with hot fluid medium import, and lower head is equipped with hot fluid medium export;Multiple cyclone components, along axial interval setting between two pipe plates, each heat exchange tube is all through cyclone component, and structure unit that can produce fluid cyclone effect is equipped in cyclone component;Support, set in the peripheral surface of shell.The above-mentioned heat exchanger of cyclone support structure, structure simple, manufacturing cost low, technical effect of high heat exchange efficiency are realized.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger equipment technology, and in particular to a swirl-supported heat exchanger. Background Technology

[0002] In many industrial sectors, heat exchangers are key equipment for heat exchange, and their shell-side heat transfer performance directly affects the overall efficiency. Installing baffles in the space outside the shell-side heat exchange tubes can not only support the tube bundle and prevent damage to the heat exchange tubes due to fluid impact and thermal expansion, but also change the fluid flow direction, increase turbulence, enhance heat transfer, and improve heat exchange efficiency.

[0003] There are two commonly used types of baffles: arc-shaped and spiral. Arc-shaped baffles are simple in structure, easy to manufacture, and have low cost, and were widely used in the early days. However, they have obvious drawbacks: when the fluid flows through them, large resistance is formed at the notch and behind the baffle, resulting in a large pressure drop and increased power consumption; uneven flow can easily cause vibration in the heat exchange tubes, shortening their service life; and they can also form large flow dead zones, reducing heat transfer efficiency.

[0004] Spiral baffles enable fluid to flow in a spiral shape, resulting in high heat transfer efficiency and low pressure drop. However, their unique spiral shape requires specialized jigs for processing, making the process complex, costly, and difficult to manufacture, thus limiting their large-scale application.

[0005] Therefore, how to provide a swirling support structure heat exchanger with simple structure, low processing cost, and high heat exchange efficiency is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] The purpose of this invention is to provide a swirl-supported heat exchanger that solves the technical problems of low heat exchange efficiency and complex structure of existing heat exchangers.

[0007] To achieve the above objectives, this utility model provides a swirl-supported heat exchanger, comprising:

[0008] The casing is vertically mounted.

[0009] Tube sheets are disposed at both ends within the housing. One end of the housing located between the two tube sheets is provided with a cold fluid medium inlet, and the other end is provided with a cold fluid medium outlet.

[0010] Multiple heat exchange tubes, with both ends passing through and fixed between the tube sheets;

[0011] The upper and lower end caps are respectively sealed and connected to the openings on both sides of the shell. Both ends of each heat exchange tube are connected to the upper and lower end caps. The upper end cap is provided with a hot fluid medium inlet, and the lower end cap is provided with a hot fluid medium outlet.

[0012] Multiple swirling components are axially spaced between the two tube sheets, and each heat exchange tube passes through the swirling component. The swirling component is provided with a structural unit that can generate a fluid swirling effect.

[0013] Supports are provided on the outer circumferential surface of the shell.

[0014] Preferably, the inner wall of the housing is provided with a plurality of support members spaced axially, the support members being used to support each of the swirl components.

[0015] Preferably, the swirl assembly includes:

[0016] A central sleeve through which the heat exchange tube located in the center passes, and at least two first swirling blades with the same direction spiraling along the outer wall of the central sleeve in the circumferential direction.

[0017] Several support rings are concentrically fitted around the outer periphery of the central sleeve;

[0018] The second swirl blade is circumferentially connected between two adjacent support rings, and each second swirl blade is provided with a tube hole for the heat exchange tube to pass through.

[0019] Preferably, each of the first swirl blades forms an angle α of 5° to 95° with the axis of the central sleeve.

[0020] Preferably, both the first and second swirl blades have a wear-resistant layer on their surfaces.

[0021] Preferably, the swirl assembly includes:

[0022] Multiple support sleeves, each support sleeve through which each heat exchange tube passes;

[0023] Each heat exchange tube has multiple sets of spiral blades spaced axially on its outer wall. Each set of spiral blades has at least two spiral blades arranged in the same direction evenly in the circumferential direction. Each spiral blade forms an angle β of 5° to 95° with the axis of the support sleeve.

[0024] A support rib is connected between adjacent support sleeves to form an integral support frame with each support sleeve and the support ring, and the support ring is placed at the upper end of the support member.

[0025] Preferably, the swirl blades are welded to the heat exchange tube to increase the heat exchange area.

[0026] Preferably, the number of the support sleeve and the number of the heat exchange tubes are equal.

[0027] Preferably, the surface of the helical blade is provided with a wear-resistant layer.

[0028] Preferably, the shell is a cylindrical structure.

[0029] Compared with the above-mentioned background technology, the swirl-supported structure heat exchanger provided by this utility model has the following beneficial effects:

[0030] The housing of this application is vertically installed, thus changing the turbulence of the cold fluid from the existing transverse flow to longitudinal turbulence. This successfully avoids the drawback of the rapid attenuation of transverse vortices along the axial direction, thereby giving full play to the advantage of longitudinal vortices, which can maintain a longer swirling distance along the axial direction, extending the effective distance of the swirling effect and improving the heat transfer enhancement effect.

[0031] With reduced pressure, when the cold fluid flows axially along the gap between the heat exchange tubes, the energy loss of the longitudinal vortex is small, which can maintain a longer spin flow distance. Therefore, when transporting the same flow rate of fluid, only less fluid transport power is required to achieve a good heat transfer enhancement effect.

[0032] Swirl components enable the cold fluid to generate strong swirling motion as it flows through, causing intense mixing and turbulence of the fluid particles. This increases the contact frequency and contact area between the cold fluid and the outer wall of the heat exchange tube, further enhancing the heat exchange process and greatly improving the heat exchanger's efficiency.

[0033] Multiple swirling components are spaced apart axially between the two tube sheets, which can uniformly guide and distribute the flow of cold fluid throughout the shell. The swirling effect generated by each swirling component can fully mix and diffuse the fluid in both the axial and radial directions, avoiding the accumulation of fluid in local areas or the occurrence of flow dead zones. This ensures the uniformity of the flow of cold fluid throughout the heat exchanger and effectively prevents the heat exchange tubes from vibrating, deforming or being damaged under the action of fluid impact and thermal expansion and contraction, thereby improving the structural stability and reliability of the heat exchanger.

[0034] It is easy to manufacture, has low processing costs, and reduces equipment investment. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the swirl support structure heat exchanger provided in an embodiment of the present utility model;

[0037] Figure 2 A top view provided for one embodiment of the swirl assembly;

[0038] Figure 3A front view provided for an embodiment of a swirl assembly;

[0039] Figure 4 A top view of another embodiment of the swirl assembly;

[0040] Figure 5 A front view of another embodiment of the swirl assembly.

[0041] in:

[0042] 1-Shell, 2-Tube sheet, 3-Cold fluid medium inlet, 4-Cold fluid medium outlet, 5-Heat exchange tube, 6-Upper head, 7-Lower head, 8-Swirl assembly, 9-Support, 10-Support component, 11-Central sleeve, 12-First swirl blade, 13-Support ring, 14-Second swirl blade, 15-Support sleeve, 16-Helical blade, 17-Support rib, 18-Support ring. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] See Figure 1 This application provides a swirl-supported heat exchanger, comprising a shell 1; tube sheets 2 disposed at both ends within the shell 1, with a cold fluid medium inlet 3 at one end and a cold fluid medium outlet 4 at the other end; multiple heat exchange tubes 5, with both ends passing through and fixed between the tube sheets 2; an upper end cap 6 and a lower end cap 7, respectively sealingly connected to the openings on both sides of the shell 1, with the upper end cap 6 having a hot fluid medium inlet and the lower end cap 7 having a hot fluid medium outlet; multiple swirl components 8, axially spaced between the two tube sheets 2, with each heat exchange tube 5 passing through a swirl component 8, and a structural unit capable of generating a fluid swirl effect inside the swirl component 8; and a support 9 disposed on the outer circumference of the shell 1 for vertical installation of the shell 1 on the ground.

[0046] Specifically, the shell 1 can be made of stainless steel or alloy steel to ensure that it can withstand the pressure and chemical corrosion of the internal fluid during long-term use. The shell 1 is cylindrical in shape, and the support 9 is set on the outer circumference of the shell 1 to support the heat exchanger shell and make it stably installed vertically.

[0047] Tube sheet 2 is sealed and securely installed at both ends inside shell 1. The bottom end of shell 1, located between the two tube sheets 2, is provided with a cold fluid medium inlet 3 and the top end is provided with a cold fluid medium outlet 4 to ensure that cold fluid can enter and exit the heat exchanger.

[0048] Multiple heat exchange tubes 5 are made of copper or titanium to ensure excellent thermal conductivity. The two ends of each heat exchange tube 5 are connected and fixed between tube sheets 2 by expansion or welding. The heat exchange tubes 5 can be arranged in a circumferential pattern.

[0049] The upper end cap 6 and the lower end cap 7 are respectively connected to the openings on both sides of the shell 1 via flanges, and sealing gaskets are provided at the connection to prevent fluid leakage. The upper end cap 6 is provided with a hot fluid medium inlet, and the lower end cap 7 is provided with a hot fluid medium outlet. The positions of the inlet and outlet can also be selected according to the fluid flow path and heat exchange requirements to ensure that the cold fluid in the shell 1 located between the two tube sheets 2 can fully and efficiently exchange heat with the hot fluid in the heat exchange tubes 5 during the flow process.

[0050] Multiple swirling components 8 are axially spaced between two tube sheets 2, and each heat exchange tube 5 passes through the swirling component 8. The swirling component 8 is equipped with a structural unit that can generate a fluid swirling effect, which can make the flowing fluid generate a strong swirling motion.

[0051] The swirl-supported heat exchanger provided in this application has the following beneficial effects:

[0052] The housing 1 of this application is installed vertically, thus changing the turbulence of the cold fluid from the existing transverse flow to longitudinal turbulence. This successfully avoids the drawback of the rapid attenuation of transverse vortices along the axial direction, thereby giving full play to the advantage of longitudinal vortices, which can maintain a longer swirling distance along the axial direction, extending the effective distance of the swirling effect and improving the heat transfer enhancement effect.

[0053] With reduced pressure, when the cold fluid flows axially along the gap of the heat exchange tube 5, the energy loss of the longitudinal vortex is small, which can maintain a longer spin flow distance. Therefore, under the condition of conveying the same flow rate of fluid, only less fluid conveying power consumption is required to achieve a good heat transfer enhancement effect.

[0054] The swirling component 8 enables the cold fluid to generate strong swirling motion as it flows through, causing intense mixing and disturbance of the particles inside the fluid. This increases the contact frequency and contact area between the cold fluid and the outer wall of the heat exchange tube 5, further enhancing the heat exchange process and greatly improving the heat exchange efficiency of the heat exchanger.

[0055] Multiple swirling components 8 are spaced apart axially between the two tube sheets 2, which can uniformly guide and distribute the flow of cold fluid throughout the shell 1. The swirling effect generated by each swirling component 8 can fully mix and diffuse the fluid in both the axial and radial directions, avoiding the accumulation of fluid in local areas or the occurrence of flow dead zones. This ensures the uniformity of the flow of cold fluid throughout the heat exchanger and effectively prevents the heat exchange tubes 5 from vibrating, deforming or being damaged under the action of fluid impact and thermal expansion and contraction, thereby improving the structural stability and reliability of the heat exchanger.

[0056] It is easy to manufacture, has low processing costs, and reduces equipment investment.

[0057] Based on the above embodiments, there is another arrangement of the cold fluid medium inlet 3 and the cold fluid medium outlet 4, that is, the top of the shell 1 located between the two tube sheets 2 is provided with the cold fluid medium inlet 3 and the bottom is provided with the cold fluid medium outlet 4.

[0058] Based on the above embodiments, multiple support members 10 are axially spaced along the inner wall of the housing 1. These support members 10 are specifically designed to support each swirl assembly 8. During installation, the support members 10 provide a positioning and support reference for the installation of the swirl assembly 8. Installers can quickly and accurately install the swirl assembly 8 according to the position and spacing of the support members 10, improving installation efficiency.

[0059] Based on the above embodiments, see Figure 2 , Figure 3 The swirl assembly 8 includes a central sleeve 11, with at least two co-directional spiral first swirl blades 12 arranged circumferentially on the outer wall of the central sleeve 11, each first swirl blade 12 forming an angle α of 5° to 95° with the axis of the support sleeve 15; several support rings 13, concentrically sleeved on the outer periphery of the central sleeve 11; and second swirl blades 14, circumferentially connected between the central sleeve 11 and the support rings 13, and between two adjacent support rings 13, each second swirl blade 14 having a tube hole for the heat exchange tube 5 to pass through.

[0060] Specifically, at least two co-directional spiral first swirling blades 12 are provided on the outer wall of the central sleeve 11 along the circumferential direction, and the first swirling blades 12 form an angle α of 5° to 95° with the axis of the central sleeve 11. When the cold fluid flows through the first swirling blades 12, it can generate swirling force.

[0061] Several support rings 13 are concentrically fitted around the outer periphery of the central sleeve 11 and are evenly distributed. Second swirl blades 14 are circumferentially connected between the central sleeve 11 and the support rings 13, and between two adjacent support rings 13, forming an orderly swirl guiding network. Each second swirl blade 14 has a pipe hole for the heat exchange tube 5 to pass through. When the cold fluid flows inside the shell 1, the second swirl blades 14 further enhance the swirling motion of the fluid, causing intense turbulence and mixing as the fluid flows around the heat exchange tube 5. This increases the contact frequency and contact area between the cold fluid and the outer wall of the heat exchange tube 5, thereby improving heat exchange efficiency. Simultaneously, the design of the pipe holes ensures that the heat exchange tube 5 can pass through smoothly and maintains an appropriate gap with the second swirl blades 14. This ensures that the normal flow of the fluid is not affected, while also guaranteeing that the swirl assembly 8 provides some support and fixation for the heat exchange tube 5, enhancing the stability of the entire heat exchanger structure.

[0062] When the cold fluid passes through the swirl assembly, several second swirl blades 14 are circumferentially distributed between the central sleeve 11 and the support ring 13, and between two adjacent support rings 13, so that multiple concentric swirl flow fields are generated in the shell, producing a tornado effect, promoting enhanced heat transfer, changing the flow direction of the fluid in the near-wall region of the heat exchange tube and increasing the turbulence, thereby improving the heat transfer efficiency. Moreover, the cold fluid flows along the tube bundle axis as a whole, which can realize pure counter-current heat exchange.

[0063] The second swirl blade 14 on the swirl assembly is used to repeatedly swirl and accelerate the fluid flowing through the gap of the heat exchange tube 5 in segments. This causes the fluid to form a longitudinal swirl that can be maintained for a long distance downstream of the swirl assembly, thereby increasing the edge velocity of the fluid in the tube gap. This effectively increases the fluid velocity near the wall of the heat exchange tube 5, significantly increases the heat transfer film coefficient of the shell side, enhances shell side heat transfer, and realizes counter-current heat exchange, thereby increasing the heat transfer driving force and improving the heat exchange efficiency.

[0064] Based on the above embodiments, the first swirl blade 12 and the central sleeve 11 are integrally formed structures. The integral structure can evenly distribute stress, enhance the strength and durability of the structure, and provide a solid guarantee for long-term stable operation. The surfaces of the first swirl blade 12 and the second swirl blade 14 are provided with wear-resistant layers, which slows down the wear rate of the blade surface, extends the service life of the blade, and reduces the performance degradation and equipment failure caused by blade wear.

[0065] This application also provides another structure for the swirl assembly 8, see [link to application]. Figure 4 and Figure 5It includes multiple support sleeves 15, each support sleeve 15 through which each heat exchange tube 5 passes; the outer wall of each heat exchange tube 5 is provided with multiple helical blade groups spaced axially, each helical blade group having at least two helical blades 16 evenly arranged circumferentially, each helical blade 16 forming an angle β of 5°~95° with the axis of the support sleeve 15; support ribs 17 are connected between adjacent support sleeves 15 to form an integral support frame with each support sleeve 15 and support ring 18, the support ring 18 being placed at the upper end of the support member 10.

[0066] Specifically, multiple support sleeves 15 are provided, which are adapted to the outer diameter of the heat exchange tube 5 to ensure that each heat exchange tube 5 can pass through smoothly. The support sleeves 15 not only provide stable support for the heat exchange tube 5 and prevent the heat exchange tube 5 from shifting or deforming due to fluid impact or its own vibration during operation, but also protect the heat exchange tube 5 from direct damage from the external environment to a certain extent and extend the service life of the heat exchange tube 5.

[0067] On the outer wall of each heat exchange tube 5, multiple helical blade groups are arranged at intervals along the axial direction. Each helical blade group has at least two helical blades 16 arranged circumferentially and uniformly. Each helical blade 16 forms an angle β of 5° to 95° with the axis of the support sleeve 15, which enables the fluid to form swirling flow of different intensities and directions around the heat exchange tube 5, thereby enhancing the heat exchange effect between the fluid and the heat exchange tube 5.

[0068] Support ribs 17 connect adjacent support sleeves 15, serving to connect each support sleeve 15 to the support ring 18 to form an integral support frame. The support ring 18 is placed on the upper end of the support member 10, providing a support foundation for the entire swirl assembly 8. The structural design of the support ring 18 takes into account its fit with the support member 10 and the overall stress balance. Its bottom is fixed to the support member 10 by bolts or welding to ensure a firm and reliable connection.

[0069] When fluid flows through the swirl assembly 8, the helical blades 16 cause the fluid to swirl, which disrupts the fluid boundary layer and enhances the turbulence, thereby improving the heat exchange efficiency between the fluid and the heat exchange tube 5. Meanwhile, the overall support frame design ensures the structural stability and reliability of the swirl assembly 8, enabling it to operate normally under various harsh conditions.

[0070] Based on the above embodiments, the swirl blades 21 are welded to the heat exchange tube 5 to increase the heat exchange area. The welded swirl blades 21 increase the outer surface area of ​​the heat exchange tube 5, which is equivalent to expanding the heat exchange area on the basis of the original heat exchange tube 5. The number of support sleeves 15 and heat exchange tubes 5 are equal.

[0071] Based on the above embodiments, the surface of the helical blade 16 is provided with a wear-resistant layer, which slows down the wear rate of the blade surface, extends the service life of the blade, and reduces performance degradation and equipment failure caused by blade wear.

[0072] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0073] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A swirl-supported heat exchanger, characterized in that, include: Housing (1), vertically arranged; Tube sheet (2) is disposed at both ends inside the housing (1). The housing (1) located between the two tube sheets (2) has a cold fluid medium inlet (3) at one end and a cold fluid medium outlet (4) at the other end. Multiple heat exchange tubes (5) are inserted at both ends and fixed between the tube sheet (2); The upper end cap (6) and the lower end cap (7) are respectively sealed and connected to the two openings of the shell (1). The two ends of each heat exchange tube (5) are connected to the upper end cap (6) and the lower end cap (7). The upper end cap (6) is provided with a hot fluid medium inlet, and the lower end cap (7) is provided with a hot fluid medium outlet. Multiple swirling components (8) are axially spaced between the two tube sheets (2), and each heat exchange tube (5) passes through the swirling component (8). The swirling component (8) is provided with a structural unit that can generate a fluid swirling effect. Support (9) is disposed on the outer peripheral surface of the housing (1); The swirl assembly (8) includes: A central sleeve (11) through which the heat exchange tube (5) located at the center passes, and the outer wall of the central sleeve (11) is provided with at least two first swirling blades (12) in the same direction along the circumferential direction. Several support rings (13) are concentrically fitted around the outer periphery of the central sleeve (11); The second swirl blade (14) is circumferentially connected between two adjacent support rings (13), and each second swirl blade (14) is provided with a tube hole for the heat exchange tube (5) to pass through; Alternatively, the swirl assembly (8) includes: Multiple support sleeves (15), each of the support sleeves (15) is through which each of the heat exchange tubes (5) passes; Each heat exchange tube (5) has multiple spiral blade groups spaced axially on its outer wall. Each spiral blade group has at least two spiral blades (16) arranged in the same direction evenly in the circumferential direction. Each spiral blade (16) forms an angle β of 5° to 95° with the axis of the support sleeve (15). Support ribs (17) are connected between adjacent support sleeves (15) to form an integral support frame with each support sleeve (15) and support ring (18), and the support ring (18) is placed at the upper end of the support member (10).

2. The swirl-supported heat exchanger according to claim 1, characterized in that, The inner wall of the housing (1) is provided with a plurality of support members (10) spaced axially, and the support members (10) are used to support each of the swirl components (8).

3. The swirl-supported heat exchanger according to claim 1, characterized in that, Each of the first swirl blades (12) forms an angle α of 5° to 95° with the axis of the central sleeve (11).

4. The swirl-supported heat exchanger according to claim 3, characterized in that, The surfaces of the first swirl blade (12) and the second swirl blade (14) are both provided with a wear-resistant layer.

5. The swirl-supported heat exchanger according to claim 1, characterized in that, The swirl blade (21) is connected to the heat exchange tube (5) by welding.

6. The swirl-supported heat exchanger according to claim 1, characterized in that, The number of the support sleeve (15) and the number of the heat exchange tube (5) are equal.

7. The swirl-supported heat exchanger according to claim 1, characterized in that, The surface of the spiral blade (16) is provided with a wear-resistant layer.

8. The swirl-supported heat exchanger according to claim 1, characterized in that, The shell (1) is a cylindrical structure.

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