Shell-and-tube heat exchanger

Abstract

The utility model discloses a shell-and-tube heat exchanger, which relates to the technical field of heat exchangers and comprises a shell, a first end cover, a second end cover, a plurality of heat exchange tubes and fluid guide tubes. The shell is of a cylindrical structure, a cold fluid inlet and a cold fluid outlet are formed in the side walls of the two ends of the shell respectively, a first end cover and a second end cover are arranged at the two ends of the shell, tube plates are arranged between the first end cover and the shell and between the second end cover and the shell, a hot fluid inlet is formed in the first end cover, and a hot fluid outlet is formed in the second end cover. The heat exchange tubes are arranged in the shell, the two ends of each heat exchange tube are connected to the tube plate so as to communicate with the first end cover and the second end cover, and a plurality of annular fins of an annular structure are arranged on the outer circumference of each heat exchange tube at intervals in the axial direction of the heat exchange tube; the fluid guide pipe is inserted into the hot fluid inlet and extends in the axial direction till abutting against the inner wall of the first end cover, and a plurality of through holes are formed in the side wall, close to the heat exchange pipe, of the fluid guide pipe. Therefore, the heat exchange efficiency of the heat exchanger can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field, especially a shell and tube heat exchanger. BACKGROUND

[0002] China is one of the main countries of global oil production and consumption, and oil consumption is increasing continuously, but oil is a non-renewable resource, and its available amount is gradually decreasing. Therefore, how to save and optimize the use of oil resources has become a problem that needs to be solved at present. Oil and gas recovery technology can effectively recover useful substances in oil and gas, reduce the emission of harmful substances and avoid negative effects on the ecological environment. Therefore, the application of oil and gas recovery technology not only meets the requirements of environmental protection, but also brings positive effects on reducing environmental protection costs, eliminating hidden dangers and improving economic benefits for enterprises.

[0003] Recovering oil and gas by using a heat exchanger is essentially using the principle of condensation. Hot oil and gas is passed into the heat exchanger to exchange heat with the cold medium in the heat exchanger, so that the temperature of the oil and gas is reduced to the expected temperature and is recovered. This method mainly relies on the physical properties of oil and gas resources to recover oil and gas resources. Oil and gas resources contain many types of components, and different components have different needs for condensation temperature. Therefore, by cooling the oil and gas resources, high-boiling hydrocarbon gases can be separated out, and then processed into oil and gas products.

[0004] Therefore, how to improve the heat exchange efficiency of the heat exchanger is a technical problem that needs to be solved by those skilled in the art at present. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a shell and tube heat exchanger, which can improve the heat exchange efficiency of the heat exchanger.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A shell and tube heat exchanger, comprising:

[0008] A shell body in a cylindrical structure, the side walls of both ends of the shell body are respectively provided with a cold fluid inlet and a cold fluid outlet, the shell body is provided with a first end cover and a second end cover at both ends, a tube sheet is arranged between the first end cover and the shell body and between the second end cover and the shell body, a hot fluid inlet is arranged on the first end cover, and a hot fluid outlet is arranged on the second end cover;

[0009] A plurality of heat exchange tubes are arranged inside the shell body, and both ends of the heat exchange tubes are connected to the tube sheets to communicate the first end cover and the second end cover, and a plurality of annular fins in an annular structure are arranged on the outer circumferences of the heat exchange tubes in the axial direction;

[0010] A fluid guide pipe is inserted into the hot fluid inlet and extends axially until abutting the inner wall of the first end cover, and the fluid guide pipe is provided with a plurality of through holes near the side wall of the heat exchange pipe.

[0011] Preferably, the inner wall of the shell and the outer wall of the heat exchange pipe form a heat exchange cavity, and a plurality of baffle plates are arranged on the inner side wall of the shell in a staggered manner, the baffle plates being sleeved on the outer periphery of the heat exchange pipe, and the baffle plates being used to force the cold fluid to flow in an S-shaped manner in the heat exchange cavity.

[0012] Preferably, the first end cover and the cold fluid inlet are arranged at the same end of the shell, the second end cover and the cold fluid outlet are arranged at the same end of the shell, the cold fluid inlet is arranged at the bottom of the shell, and the cold fluid outlet is arranged at the top of the shell.

[0013] Preferably, the hot fluid inlet and the cold fluid outlet are arranged on the same side, and the hot fluid outlet and the cold fluid inlet are arranged on the same side.

[0014] Preferably, a gap is left between any two adjacent heat exchange pipes.

[0015] Preferably, the baffle plates are connected to the inner wall of the shell by welding.

[0016] Preferably, the circumference of the fluid guide pipe is provided with a plurality of annular fins.

[0017] Preferably, the circumference of the heat exchange pipe is provided with heat dissipation rib plates perpendicular to the annular fins.

[0018] Preferably, the shell, the first end cover, the second end cover, and the fluid guide pipe are all made of stainless steel.

[0019] Preferably, the heat exchange pipe is made of stainless steel or copper, and the annular fins are made of copper.

[0020] With respect to the above background technology, the heat exchanger provided by the present application comprises a shell, a first end cover, a second end cover, a plurality of heat exchange pipes, and a fluid guide pipe; the shell is in a cylindrical structure, and the side walls at both ends thereof are respectively provided with a cold fluid inlet and a cold fluid outlet; the shell is provided with the first end cover and the second end cover at both ends thereof, and pipe plates are arranged between the first end cover and the shell and between the second end cover and the shell; the first end cover is provided with a hot fluid inlet, and the second end cover is provided with a hot fluid outlet; the plurality of heat exchange pipes are arranged inside the shell and connected to the pipe plates at both ends thereof to communicate the first end cover and the second end cover; a plurality of annular fins in an annular structure are arranged on the outer circumference of the heat exchange pipe in an axial direction; the fluid guide pipe is inserted into the hot fluid inlet and extends axially until abutting the inner wall of the first end cover, and the fluid guide pipe is provided with a plurality of through holes near the side wall of the heat exchange pipe.

[0021] Specifically, the hot fluid is introduced into the first end cover, and then flows out from the second end cover through the heat exchange pipes, and at the same time, in order to exchange heat with the hot fluid in the heat exchange pipes, the cold fluid is introduced into the shell, and the cold fluid exchanges heat with the hot fluid in the heat exchange pipes; in order to increase the contact area of the heat exchange pipes and the cold fluid, a plurality of groups of annular fins in annular structure are arranged on the outer circumferences of the heat exchange pipes, and the annular fins can greatly improve the heat exchange efficiency of the heat exchange pipes; in addition, the fluid guide pipe is inserted at the hot fluid inlet, the fluid guide pipe can rapidly diffuse the hot fluid introduced into the first end cover to the surrounding, so that the hot fluid can be directly introduced into different heat exchange pipes, so that the problem that the hot fluid is first impacted to the bottom and then diffused to the surrounding of the first end cover after being introduced into the traditional heat exchanger, so that the hot fluid enters the heat exchange pipes at uneven speed and the heat exchange is insufficient, and the heat exchange efficiency of the heat exchanger is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by the provided drawings without creative labor for those skilled in the art.

[0023] Figure 1 The overall structure schematic diagram of the shell-and-tube heat exchanger provided by the embodiments of the present application is shown in the figure.

[0024] Figure 2 The cross-sectional view of the first end cover is shown in the figure. Figure 1

[0025] Figure 3 The structure schematic diagram of the heat exchange pipe provided by the embodiments of the present application is shown in the figure.

[0026] Figure 4 The structure schematic diagram of the annular fin provided by the embodiments of the present application is shown in the figure.

[0027] Figure 5 The structure schematic diagram of the first end cover provided by the embodiments of the present application is shown in the figure.

[0028] Figure 6 The distribution schematic diagram of the baffle provided by the embodiments of the present application is shown in the figure.

[0029] Among them:

[0030] 100-shell, 110-cold fluid inlet, 120-cold fluid outlet, 130-tube plate;

[0031] 200-first end cover, 210-hot fluid inlet; ​

[0032] 300 - second end cover, 310 - hot fluid outlet;

[0033] 400 - heat exchange tube, 410 - annular fin, 420 - baffle;

[0034] 500 - fluid guide tube, 510 - through hole. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0036] In order to enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0037] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

[0038] The present application aims to provide a shell-and-tube heat exchanger that can improve the heat exchange efficiency of the heat exchanger.

[0039] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0040] Please refer to Figures 1 to 6The shell-and-tube heat exchanger provided by the embodiment comprises a shell 100, a first end cover 200, a second end cover 300, a plurality of heat exchange tubes 400 and a fluid guide pipe 500. The shell 100 is in a cylindrical structure, and the side walls at both ends of the shell 100 are respectively provided with a cold fluid inlet 110 and a cold fluid outlet 120. The shell 100 is provided with the first end cover 200 and the second end cover 300 at both ends. The first end cover 200 and the second end cover 300 are respectively provided with a tube plate 130 between the first end cover 200 and the shell 100 and between the second end cover 300 and the shell 100. The first end cover 200 is provided with a hot fluid inlet 210, and the second end cover 300 is provided with a hot fluid outlet 310. The plurality of heat exchange tubes 400 are arranged in the shell 100, and both ends of the heat exchange tubes 400 are connected to the tube plates 130 to communicate the first end cover 200 and the second end cover 300. A plurality of annular fins 410 in an annular structure are arranged on the outer circumferences of the heat exchange tubes 400 in the axial direction. The fluid guide pipe 500 is inserted into the hot fluid inlet 210 and extends in the axial direction until abutting against the inner wall of the first end cover 200. The side wall of the fluid guide pipe 500 close to the heat exchange tubes 400 is provided with a plurality of through holes 510.

[0041] Specifically as shown in Figure 1 and Figure 2 The shell 100 in the embodiment is specifically a cylindrical structure, and the cold fluid inlet 110 and the cold fluid outlet 120 are respectively arranged at both ends of the shell 100. The two ends of the shell 100 are sealed by the circular tube plates 130, so that a cavity for accommodating the cold fluid is formed in the shell 100. Specifically, the circular tube plates 130 can be welded and arranged at both ends of the shell 100. A plurality of heat exchange tubes 400 are arranged in the shell 100 in the axial direction, and each heat exchange tube 400 is connected between the two tube plates 130. The tube plates 130 are provided with corresponding holes to communicate the heat exchange tubes 400. The first end cover 200 and the second end cover 300 in a cylindrical structure are arranged on both sides of the tube plate 130. The first end cover 200 and the second end cover 300 are both hollow structures, and the spaces in the first end cover 200 and the second end cover 300 are communicated by the heat exchange tubes 400. In the embodiment, the hot fluid inlet 210 is arranged on the first end cover 200, and the hot fluid outlet 310 is arranged on the second end cover 300. Therefore, the heat exchanger in the embodiment forms two independent fluid channels. One of the two channels is for the cold fluid to flow through, that is, the cold fluid enters from the cold fluid inlet 110 and flows out from the cold fluid outlet 120. The other channel is for the hot fluid to flow through, that is, the hot fluid enters from the hot fluid inlet 210, flows through the heat exchange tubes 400 and flows out from the hot fluid outlet 310. It should be noted that the heat exchange tubes 400 are arranged in the shell 100 and are wrapped by the cold fluid. The cold fluid absorbs the heat of the hot fluid flowing through the heat exchange tubes 400, so as to achieve the heat exchange effect.

[0042] Meanwhile, in order to enhance the heat exchange effect, in the embodiment, first, a plurality of groups of annular fins 410 for heat exchange are arranged on the outer periphery of each heat exchange tube 400, as shown in Figure 3 and Figure 4 The annular fins 410 can increase the area of the side with low thermal resistance, increase the overall heat transfer coefficient, and have the advantages of small volume, small floor area, low maintenance cost, etc. The annular fins 410 can strengthen the heat transfer process of the heat exchanger and improve the heat exchange performance.

[0043] In addition, in the embodiment, a fluid guide pipe 500 is arranged at the hot fluid inlet 210, as shown in Figure 5 The fluid guide pipe 500 is a cylindrical structure, and a plurality of through holes 510 are arranged on the side close to the tube plate 130. When the hot fluid is introduced into the heat exchanger through the hot fluid inlet 210, the hot fluid can directly enter the fluid guide pipe 500 and be quickly introduced into the heat exchange tube 400 by the fluid guide pipe 500. This solves the problem that in the conventional heat exchanger, the fluid first impacts the bottom and then spreads around the end cover after being introduced, which causes the fluid to be too dispersed at the first end cover 200 and not uniformly distributed when entering the heat exchange tube 400, thereby causing insufficient heat exchange. The number and angle of the openings on the fluid guide pipe 500 can be adjusted according to different flow requirements.

[0044] In other words, the hot fluid is introduced into the first end cover 200 and then flows out from the second end cover 300 through the heat exchange tube 400. At the same time, in order to exchange heat with the hot fluid in the heat exchange tube 400, cold fluid is introduced into the shell 100, and the cold fluid exchanges heat with the hot fluid in the heat exchange tube 400. In order to increase the contact area between the heat exchange tube 400 and the cold fluid, a plurality of groups of annular fins 410 in annular structure are arranged on the outer periphery of the heat exchange tube 400 at intervals. The presence of the annular fins 410 can greatly improve the heat exchange efficiency of the heat exchange tube 400. In addition, the fluid guide pipe 500 is inserted at the hot fluid inlet 210. The fluid guide pipe 500 can quickly spread the hot fluid introduced into the first end cover 200 to the surrounding area, so that the hot fluid can be directly introduced into different heat exchange tubes 400. This solves the problem that in the conventional heat exchanger, the hot fluid first impacts the bottom and then spreads around the first end cover 200 after being introduced, which causes the hot fluid to be not uniformly distributed when entering the heat exchange tube 400, thereby causing insufficient heat exchange, and thus improves the heat exchange efficiency of the heat exchanger.

[0045] Preferably, the inner wall of the shell 100 and the outer wall of the heat exchange tube 400 form a heat exchange cavity, and a plurality of groups of baffles 420 are arranged on the inner side wall of the shell 100 at intervals and staggered. The baffles 420 are arranged on the outer periphery of the heat exchange tube 400, and the baffles 420 are used to force the cold fluid to flow in an S shape in the heat exchange cavity.

[0046] AsFigure 2 As shown in the drawings, in the present embodiment, the space between the inside of the shell 100 and the outside of the heat exchange pipe 400 is a heat exchange cavity. In order to prolong the time for which the cold fluid contacts the heat exchange pipe 400 inside the heat exchange cavity, thereby increasing the heat exchange efficiency between the two, a plurality of baffles 420 are arranged on the inner wall of the shell 100. Specifically, the baffles 420 are provided with holes for penetrating the heat exchange pipe 400, and the holes can just penetrate the heat exchange pipe 400. The baffles 420 are not only perpendicular to the axial direction of the heat exchange pipe 400, but also are arranged in an interleaved manner on the top and bottom of the inner wall of the shell 100. It should be noted that the baffles 420 extend towards the side wall opposite to the shell 100 by a distance exceeding the radius of the shell 100. In this way, the cold fluid cannot flow in a straight line inside the heat exchange cavity, but will flow in an S shape inside the heat exchange cavity due to the blocking of the baffles 420. The specific distribution of the baffles 420 is as shown in the drawings. Figure 6 As shown in the drawings.

[0047] In addition, the baffles 420 also have the function of heat exchange pipes 400. As can be understood, since the heat exchange pipes 400 have a certain length, but only the two ends are fixed and supported, the baffles 420 are arranged inside the shell 100 and between the two tube plates 130, and can play a supporting role in bundling the heat exchange pipes 400.

[0048] In the present embodiment, the baffles 420 are installed inside the shell 100 by welding, and can also be connected to the shell 100 by other means, which are not limited in the present document.

[0049] Further, the first end cover 200 and the cold fluid inlet 110 are arranged at the same end of the shell 100, and the second end cover 300 and the cold fluid outlet 120 are arranged at the same end of the shell 100. The cold fluid inlet 110 is arranged at the bottom of the shell 100, and the cold fluid outlet 120 is arranged at the top of the shell 100.

[0050] As can be understood, in order to enhance the heat exchange effect between the hot fluid and the cold fluid, the cold fluid inlet 110 is arranged at the bottom of the shell 100, and the cold fluid outlet 120 is arranged at the top of the shell 100. This arrangement can ensure that the entire inside of the shell 100 is filled with fluid, and prolong the residence time of the cold fluid in the heat exchange cavity, thereby improving the heat exchange efficiency between the cold fluid and the hot fluid in the heat exchange pipe 400.

[0051] As preferred, in the present embodiment, the hot fluid inlet 210 and the cold fluid inlet 110 are arranged at the same end of the shell 100, and the hot fluid outlet 310 and the cold fluid outlet 120 are arranged at the same end of the shell 100. This is only one way of fluid inlet, and the end where the hot fluid inlet 210 is arranged can be changed according to the actual situation, i.e. the direction of the hot fluid inlet can be changed, which is not limited in the present document.

[0052] Further, the hot fluid inlet 210 is arranged on the same side as the cold fluid outlet 120, and the hot fluid outlet 310 is arranged on the same side as the cold fluid inlet 110.

[0053] In the embodiment, as shown in the figure, the hot fluid inlet 210 and the cold fluid outlet 120 are arranged on the top of the first end cover 200 and the shell 100 respectively, and the hot fluid outlet 310 and the cold fluid inlet 110 are arranged on the bottom of the second end cover 300 and the shell 100 respectively, thus the flow direction of the cold fluid is from bottom to top, which can ensure that the whole shell 100 is filled with fluid, and the flow direction of the hot fluid is from top to bottom, which can ensure that the hot fluid can flow smoothly and quickly into the heat exchange pipe 400. Figure 1

[0054] Preferably, a gap is left between any two adjacent heat exchange pipes 400.

[0055] It can be understood that, in order to facilitate the flow of the cold fluid in the heat exchange cavity, it is necessary to ensure that the heat exchange pipes 400 arranged in the embodiment are bundled with gaps for the fluid to pass through, that is, a certain gap is left between any two adjacent heat exchange pipes 400, and the size of the gap needs to be able to ensure the installation of the annular fins 410.

[0056] Preferably, the baffle 420 is connected to the inner wall of the shell 100 by welding.

[0057] It can be understood that this connection method is stable, and can reduce the installation difficulty of the baffle 420 and the processing cost of the whole heat exchanger.

[0058] Preferably, the circumference of the fluid guide pipe 500 is provided with a plurality of annular fins 410.

[0059] In another embodiment, a plurality of annular fins 410 can also be arranged on the circumference of the fluid guide pipe 500, so that the hot fluid flowing out of the through hole 510 will be quickly dispersed by the annular fins 410 after flowing out of the through hole 510, so that the hot fluid can flow into different heat exchange pipes 400 inside the heat exchange pipe 400, thereby improving the heat exchange efficiency of the heat exchanger.

[0060] Preferably, the circumference of the heat exchange pipe 400 is provided with heat dissipation rib plates perpendicular to the annular fins 410.

[0061] In another embodiment, a plurality of heat dissipation rib plates perpendicular to the annular fins 410 can also be arranged on the circumference of the heat exchange pipe 400, which can further enhance the contact area between the heat exchange pipe 400 and the cold fluid, thereby enhancing the heat exchange efficiency of the two, so as to improve the heat exchange efficiency of the heat exchanger. ​

[0062] Preferably, the shell 100, the first end cover 200, the second end cover 300 and the fluid guide pipe 500 are made of stainless steel.

[0063] In the embodiment, the shell 100, the first end cover 200, the second end cover 300 and the fluid guide pipe 500 are preferably made of stainless steel, which is firm, economical and practical, corrosion resistant and has a high heat conduction coefficient.

[0064] Further, the heat exchange pipe 400 is made of stainless steel or copper, and the annular fin 410 is made of copper.

[0065] In order to increase the heat exchange efficiency of the heat exchanger, the heat exchange pipe 400 and the annular fin 410 can be made of copper which has a higher heat transfer coefficient, but in order to reduce the cost, the heat exchange pipe 400 can be made of stainless steel.

[0066] Of course, the materials of the shell 100, the first end cover 200, the second end cover 300, the fluid guide pipe 500, the heat exchange pipe 400 and the annular fin 410 can be adjusted according to actual conditions, as long as the requirements are met.

[0067] In summary, the heat exchanger provided in the present application introduces a fluid guide pipe 500 at the fluid inlet, so that when the hot fluid is introduced into the heat exchanger through the hot fluid inlet 210, it directly enters the fluid guide pipe 500, and the fluid is quickly introduced into the heat exchange pipe 400 by the fluid guide pipe 500, solving the problem that in the traditional heat exchanger, after the hot fluid is introduced, it first impacts the bottom and then spreads around the first end cover 200, resulting in uneven speed of the hot fluid entering the heat exchange pipe 400 and thus insufficient heat exchange; in addition, by providing the annular fin 410 on the heat exchange pipe 400, the heat exchange area is increased, the heat transfer process of the heat exchanger is strengthened, and the heat exchange performance is improved; therefore, the heat exchanger provided in the present application significantly improves the heat exchange efficiency compared with the traditional heat exchanger.

[0068] It should be noted that in the present specification, the relationship terms such as first and second are only used to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between the entities.

[0069] The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0070] The above has carried out the detailed introduction to the embodiment provided by the utility model. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment is only used for helping to understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model.

Claims

1. A shell and tube heat exchanger, characterized in that, The application relates to a heat exchanger, which comprises the following parts: a shell (100) in a cylindrical structure, the side walls of the two ends of the shell (100) are respectively provided with a cold fluid inlet (110) and a cold fluid outlet (120), the two ends of the shell (100) are provided with a first end cover (200) and a second end cover (300), a tube plate (130) is arranged between the first end cover (200) and the shell (100) and between the second end cover (300) and the shell (100), a hot fluid inlet (210) is arranged on the first end cover (200), and a hot fluid outlet (310) is arranged on the second end cover (300); a plurality of heat exchange pipes (400) are arranged in the shell (100) and connected to the tube plate (130) at the two ends to communicate the first end cover (200) and the second end cover (300), a plurality of annular fins (410) in an annular structure are arranged on the outer circumferences of the heat exchange pipes (400) and spaced along the axial direction; a fluid guide pipe (500) is inserted into the hot fluid inlet (210) and extends along the axial direction until abutting against the inner wall of the first end cover (200), and a plurality of through holes (510) are arranged on the side wall of the fluid guide pipe (500) close to the heat exchange pipes (400). A heat exchange cavity is formed between the inner wall of the shell (100) and the outer wall of the heat exchange pipes (400), a plurality of groups of baffles (420) are arranged on the inner side wall of the shell (100) and spaced and staggered, the baffles (420) are arranged on the outer circumferences of the heat exchange pipes (400), and the baffles (420) are used for forcing the cold fluid to flow in an S shape in the heat exchange cavity. The first end cover (200) and the cold fluid inlet (110) are arranged on the same end of the shell (100), the second end cover (300) and the cold fluid outlet (120) are arranged on the same end of the shell (100), the cold fluid inlet (110) is arranged on the bottom of the shell (100), and the cold fluid outlet (120) is arranged on the top of the shell (100). The hot fluid inlet (210) and the cold fluid outlet (120) are arranged on the same side, and the hot fluid outlet (310) and the cold fluid inlet (110) are arranged on the same side.

2. The shell and tube heat exchanger of claim 1, wherein, A gap is left between any two adjacent heat exchange pipes (400).

3. The shell and tube heat exchanger of claim 2, wherein, The baffles (420) are connected to the inner wall of the shell (100) through welding.

4. The shell and tube heat exchanger of claim 3, wherein, A plurality of annular fins (410) are arranged on the circumference of the fluid guide pipe (500).

5. The shell and tube heat exchanger of claim 4, wherein, Radiating rib plates perpendicular to the annular fins (410) are arranged on the circumference of the heat exchange pipes (400).

6. The shell and tube heat exchanger of claim 2, wherein, The materials of the shell (100), the first end cover (200), the second end cover (300) and the fluid guide pipe (500) are stainless steel.

7. The shell and tube heat exchanger of claim 4, wherein, The material of the heat exchange pipes (400) is stainless steel or copper, and the material of the annular fins (410) is copper.

8. The shell and tube heat exchanger of claim 1, wherein, ​ 9. The shell and tube heat exchanger according to any one of claims 1 to 8, characterized in that ​ 10. The shell and tube heat exchanger according to any one of claims 1 to 8, characterized in that ​

Images