Baffling inner plug-in efficient heat exchange tube applied to chemical skid and heat exchanger

Abstract

The utility model relates to the technical field of heat exchange equipment, and discloses a baffling insert efficient heat exchange tube applied to a chemical engineering skid and a heat exchanger, the heat exchange tube comprises a tube body and an insert, the tube body is provided with an inner cavity, a tube inlet and a tube outlet, the tube inlet and the tube outlet are communicated with the inner cavity, and the insert is arranged in the inner cavity. The inner inserting piece comprises a middle type baffle, a wing type baffle and two longitudinal partition plates, the two longitudinal partition plates extend in the axial direction of the pipe body and divide the inner cavity into a first cavity and two second cavities located on the two sides of the first cavity, and the first cavity is opposite to the pipe inlet; the multiple middle type baffles are arranged in the first cavity at intervals in the axial direction of the pipe body, and the first cavity is divided into multiple first small cavities; the multiple wing-shaped baffles are arranged in the second cavity at intervals in the axial direction of the pipe body, and the second cavity is divided into multiple second small cavities; a circulation hole is formed in the longitudinal partition plate and used for communicating one second small cavity with two first small cavities, and every two adjacent second small cavities communicate with the same first small cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a baffled inner plug-in high-efficiency heat exchange tube and a heat exchanger applied to a chemical skid. Background Art

[0002] A chemical skid is a modular, integrated process equipment unit. It pre-assembles the necessary chemical process equipment (such as pumps, valves, heat exchangers, reactors, storage tanks, instrumentation, etc.) and piping systems onto a structural framework (typically a steel base), creating a fully transportable, quickly installed, and plug-and-play functional unit. Its modularity, portability, and ease of deployment have led to its widespread application in various sectors, including petroleum, metallurgy, and energy. As a crucial component of a chemical skid, improving heat exchanger efficiency and energy conservation is becoming increasingly important. In-tube inserts are gaining popularity due to their relatively simple structure, low price, ease of manufacturing, and improved heat transfer efficiency. Currently, commonly used inserts include ties, helical coils, and coil springs. While these simple inserts are easy to manufacture and can enhance heat transfer within the tubes to a certain extent, they still require more effective flow turbulence within the tubes.

[0003] Therefore, there is an urgent need for a high-efficiency heat exchange tube and heat exchanger with a baffle insert for use in chemical skids to solve the above problems. Utility Model Content

[0004] One purpose of the utility model is to provide a high-efficiency heat exchange tube with a baffle insert for use in a chemical skid, which can improve the flow effect of the fluid in the tube, thereby enhancing the heat transfer effect of the heat exchange tube.

[0005] As conceived above, the technical solution adopted by the utility model is:

[0006] Provided is a high-efficiency heat exchange tube with baffle inserts for chemical skids, including:

[0007] a tube body having an inner cavity and a tube inlet and a tube outlet communicating with the inner cavity;

[0008] an inner plug-in, disposed in the inner cavity, comprising an intermediate baffle, an airfoil baffle, and two longitudinal partitions, the two longitudinal partitions extending axially along the tube body to divide the inner cavity into a first cavity and two second cavities located on either side of the first cavity, the first cavity being opposite the tube inlet; a plurality of intermediate baffles, each of which is spaced apart in the first cavity along the axial direction of the tube body to divide the first cavity into a plurality of first small cavities; a plurality of airfoil baffles, each of which is spaced apart in the second cavity along the axial direction of the tube body to divide the second cavity into a plurality of second small cavities;

[0009] The longitudinal partition plate is provided with flow-through holes for communicating one second small cavity with two first small cavities, and adjacent two second small cavities with the same first small cavity.

[0010] Optionally, the intermediate baffles and the wing-shaped baffles are arranged alternately in the axial direction of the pipe body, and the flow-through holes have a plurality of flow-through holes in the flow direction of the fluid in the pipe body.

[0011] The wing-shaped baffle is flush with the downstream edge of the mth flow-through hole, and m is an odd number; and / or, the intermediate baffle is flush with the downstream edge of the nth flow-through hole, and n is an even number.

[0012] Optionally, the intermediate baffle is a flat plate structure, and the intermediate baffle is arranged in parallel to the radial direction of the pipe body.

[0013] Optionally, the intermediate baffle is a V-shaped structure, and the V-shaped structure has a peak edge extending in the radial direction of the pipe body, and the peak edge of the intermediate baffle located downstream faces the intermediate baffle located upstream.

[0014] Optionally, the peak edge of the intermediate baffle extends to the inner wall surface of the pipe body in the radial direction of the pipe body.

[0015] Optionally, the wing-shaped baffle is a flat plate structure, and the wing-shaped baffle is arranged in parallel to the radial direction of the pipe body.

[0016] Optionally, the wing-shaped baffle is a flat plate structure, and the wing-shaped baffle is arranged at an angle to the radial direction of the pipe body.

[0017] Optionally, a plurality of intermediate baffles are uniformly spaced in the axial direction of the pipe body; and / or,

[0018] A plurality of wing-shaped baffles are uniformly spaced in the axial direction of the pipe body.

[0019] Optionally, the longitudinal partition plate, the intermediate baffle and the wing-shaped baffle are welded, and the insert is detachably connected to the pipe body.

[0020] Another purpose of the utility model is to provide a heat exchanger, which can improve the flow effect of the fluid in the pipe, thereby enhancing the heat transfer effect of the heat exchanger.

[0021] As conceived above, the technical scheme adopted by the utility model is:

[0022] A heat exchanger is provided, which comprises a plurality of the above-mentioned baffle-type high-efficiency heat exchange pipes.

[0023] The utility model has the advantages that:

[0024] The utility model proposes a high-efficiency heat exchange tube with a baffle insert for use in a chemical skid, comprising a tube body and an insert insert. The tube body has an inner cavity, and a tube inlet and a tube outlet connected to the inner cavity. The insert insert is disposed in the inner cavity. The insert insert includes an intermediate baffle, an airfoil baffle, and two longitudinal partitions. The two longitudinal partitions extend axially along the tube body, dividing the inner cavity into a first cavity and two second cavities located on either side of the first cavity, with the first cavity opposing the tube inlet. There are multiple intermediate baffles, each of which is spaced apart along the axial direction of the tube body in the first cavity, dividing the first cavity into a plurality of first subcavities. There are multiple airfoil baffles, each of which is spaced apart along the axial direction of the tube body in the second cavity, dividing the second cavity into a plurality of second subcavities. Flow holes are provided on the longitudinal partitions, which are spaced apart along the axial direction of the tube body so that one second subcavity communicates with two first subcavities, and two adjacent second subcavities communicate with the same first subcavity, thereby enabling fluid flow between the first subcavity and the second subcavity.

[0025] When the fluid flows into the tube inlet, it is blocked by the middle baffle located in the first chamber, and the fluid is split into two and enters the second chambers on both sides respectively. Along the flow direction of the fluid, the second chamber includes multiple second chambers. When the fluid enters the first second chamber, it can enter the first first chamber in the middle through the first flow hole, mix in the first first chamber, and then enter the second second chambers on both sides through the second flow hole. Then, it enters the second first chamber in the middle through the third flow hole and mixes again in the first chamber, and then enters the third second chamber on both sides through the third flow hole, and so on. By providing an internal plug in the tube body, the fluid is split into two streams upon entering the tube body, and each stream of fluid passes through a flow hole on a longitudinal baffle to achieve S-shaped circulation. At the same time, the two streams of fluid are mixed multiple times in the first chamber in the middle, thereby effectively reducing the thickness of the boundary layer and enhancing the heat transfer effect of the heat exchange tube.

[0026] The heat exchanger proposed in this utility model includes multiple high-efficiency heat exchange tubes with baffle inserts for use in chemical skids. These baffle inserts extend axially within the heat exchanger's heat exchange cavity. Fluid within the tubes exchanges heat with fluid outside the tubes. The placement of the inserts reduces thermal resistance within the tubes, effectively enhancing the heat transfer efficiency of the heat exchanger and significantly reducing equipment investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a partial cross-sectional view of a high-efficiency heat exchange tube with a baffle insert applied to a chemical skid provided in Example 1 of the present utility model;

[0028] Figure 2 This is a partial structural diagram of the inner plug-in provided in the first embodiment of the present utility model;

[0029] Figure 3 This is a partial structural diagram of the longitudinal partition provided in Example 1 of the present utility model;

[0030] Figure 4 This is a partial assembly diagram of the inner insert and the mounting ring provided in the first embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the direction of fluid flow in the pipe provided by the first embodiment of the present invention;

[0032] Figure 6 This is a cross-sectional view of a baffled inner plug-in high-efficiency heat exchange tube applied to a chemical skid provided in the second embodiment of the present utility model;

[0033] Figure 7 This is a schematic diagram of the direction of fluid flow in the pipe provided by the second embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the direction of fluid flow in a tube provided by the third embodiment of the present invention.

[0035] In the picture:

[0036] 1. Pipe body;

[0037] 2. Inner plug-in; 21. Longitudinal partition; 211. Flow hole; 22. Intermediate baffle; 221. Peak ridge; 222. Oblique baffle; 23. Wing-shaped baffle;

[0038] 101, first small cavity; 102, second small cavity;

[0039] 3. Install the ring. DETAILED DESCRIPTION

[0040] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of it.

[0041] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0044] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0045] Example 1

[0046] like Figures 1 to 5 As shown, this embodiment provides a baffle insert high-efficiency heat exchange tube for chemical skids, including a tube body 1 and an insert 2. The tube body 1 has an inner cavity and a tube inlet and a tube outlet connected to the inner cavity. The insert 2 is arranged in the inner cavity. The fluid flows into the tube from the tube inlet and flows out from the tube outlet after passing through the insert 2. The insert 2 is used to enhance the disturbance effect on the fluid in the tube, thereby enhancing the heat transfer effect of the heat exchange tube.

[0047] Specifically, the inner insert 2 comprises intermediate baffles 22, wing baffles 23 and two longitudinal partitions 21, the two longitudinal partitions 21 extend along the axial direction of the pipe body 1 to divide the inner cavity into a first cavity and two second cavities on both sides of the first cavity, and the first cavity is opposite to the pipe inlet. The intermediate baffles 22 are provided in the first cavity and spaced along the axial direction of the pipe body 1 to divide the first cavity into a plurality of first small cavities 101. The wing baffles 23 are provided in the second cavities and spaced along the axial direction of the pipe body 1 to divide the second cavities into a plurality of second small cavities 102. The longitudinal partitions 21 are provided with flow-through holes 211, and the flow-through holes 211 are spaced along the axial direction of the pipe body 1 to communicate one second small cavity 102 with two first small cavities 101, and adjacent two second small cavities 102 with the same first small cavity 101, so as to realize the flow of fluid between the first small cavities 101 and the second small cavities 102. That is, as shown in Figure 5 two flow-through holes 211 are respectively arranged on the two longitudinal partitions 21 of one first small cavity 101, and the wing baffles 23 and the intermediate baffles 22 are alternately arranged along the axial direction of the pipe body 1, so that the first small cavities 101 and the second small cavities 102 are partially staggered along the axial direction of the pipe body 1, and the two flow-through holes 211 on one side of the longitudinal partition 21 of one first small cavity 101 respectively communicate with adjacent two second small cavities 102.

[0048] When the fluid flows from the pipe inlet, it is hindered by the intermediate baffles 22 in the first cavity, and is divided into two parts and enters the two second cavities on both sides. Along the flow direction of the fluid, the second cavity comprises a plurality of second small cavities 102, when the fluid enters the first second small cavity 102, it can enter the first first small cavity 101 in the middle through the first flow-through hole 211, and mix in the first small cavity 101, then enter the two second second small cavities 102 on both sides through the second flow-through hole 211, and then enter the second first small cavity 101 in the middle through the third flow-through hole 211 and mix again in the first small cavity 101, and then enter the two third second small cavities 102 on both sides through the third flow-through hole 211, and so on. By arranging the inner insert 2 in the pipe body 1, the fluid is divided into two streams after entering the pipe body 1, and each stream realizes S-shaped flow through the flow-through holes 211 on one longitudinal partition 21, and the two streams mix again in the first small cavity 101 in the middle, so as to effectively reduce the thickness of the boundary layer and strengthen the heat transfer effect of the heat exchange pipe.

[0049] In specific implementation, the spacing between the two longitudinal partitions 21 can be adjusted according to the inner diameter of the pipe body 1, and preferably the volume of the first cavity is about the sum of the volumes of the two second cavities. In the embodiment, the pipe body 1 is a circular pipe, and the first cavity divided by the two longitudinal partitions 21 is a racetrack type, and the two second cavities on both sides of the first cavity are semicircular types.

[0050] In implementation, the flow-through hole 211 can be a rectangular hole, a circular hole or a through hole of other shapes.

[0051] As shown in Figure 5 , the intermediate baffles 22 and the airfoil baffles 23 are arranged alternately in the axial direction of the tube body 1, and the flow-through holes 211 are provided in plurality along the flow direction of the fluid in the tube body 1. Optionally, the airfoil baffles 23 are flush with the downstream edge of the mth flow-through hole 211, where m is an odd number, so as to reduce the flow dead angle formed at the joint of the airfoil baffles 23 and the longitudinal partition 21, and avoid the partial fluid from staying at the inner wall corner of the second small cavity 102 when flowing from the second small cavity 102 to the first small cavity 101. Optionally, the intermediate baffles 22 are flush with the downstream edge of the nth flow-through hole 211, where n is an even number, so as to reduce the flow dead angle formed at the joint of the intermediate baffles 22 and the longitudinal partition 21, and avoid the partial fluid from staying at the inner wall corner of the first small cavity 101 when flowing from the first small cavity 101 to the second small cavity 102.

[0052] In implementation, when the fluid flows from the first second small cavity 102 into the first first small cavity 101 through the first flow-through hole 211, the fluid in the first small cavity 101 will continue to flow forward under the action of pressure, and flows into the second second small cavity 102 from the second flow-through hole 211, without flowing back to the first second small cavity 102 from the first flow-through hole 211. Similarly, the fluid flowing into the second second small cavity 102 will continue to flow forward under the action of pressure, and flows into the second first small cavity 101 from the third flow-through hole 211, and so on, until the fluid flows out of the heat exchange tube from the tube outlet.

[0053] Optionally, the longitudinal partition 21 is a flat plate structure. When the tube body 1 is a circular tube, the longitudinal partition 21 is arc-shaped at both ends in the radial direction of the tube body 1, so as to ensure the partitioning effect of the longitudinal partition 21 on the first cavity and the two second cavities, and avoid the fluid flowing in the gap between the longitudinal partition 21 and the inner wall surface of the tube body 1.

[0054] Optionally, the intermediate baffles 22 are flat plate structures, and each of the intermediate baffles 22 is arranged parallel to the radial direction of the tube body 1. When the tube body 1 is a circular tube, the intermediate baffles 22 of the flat plate structure are arc-shaped at the two sides connected to the inner wall surface of the tube body 1, so as to ensure the partitioning effect of the intermediate baffles 22 on the first cavity, and avoid the fluid flowing in the gap between the intermediate baffles 22 and the inner wall surface of the tube body 1.

[0055] Optionally, the plurality of intermediate baffles 22 are arranged uniformly and spaced apart in the axial direction of the tube body 1. Thus, a plurality of first small cavities 101 with uniform volumes can be formed as shown in Figure 5 , so as to make the distribution of the fluid in each first small cavity 101 more uniform.

[0056] Optionally, the wing-shaped baffles 23 are flat-plate structures, and each wing-shaped baffle 23 is arranged parallel to the radial direction of the tube body 1. If the tube body 1 is a circular tube, the side of the flat-plate wing-shaped baffle 23 connecting to the inner wall of the tube body 1 is arc-shaped to ensure that the wing-shaped baffle 23 has a partitioning effect on the second cavity and prevents fluid from flowing in the gap between the wing-shaped baffle 23 and the inner wall of the tube body 1.

[0057] Optionally, a plurality of wing-shaped baffles 23 are evenly spaced along the axial direction of the tube body 1. Figure 5 The multiple second small chambers 102 shown have the same volume, so that the distribution of the fluid in each second small chamber 102 is more uniform.

[0058] Optionally, the longitudinal baffle 21, the intermediate baffle 22 and the wing baffle 23 are welded together, and the inner plug 2 is detachably connected to the tube body 1. In specific implementation, the wing baffle 23 is welded to the longitudinal baffle 21, and the intermediate baffle 22 is welded to the longitudinal baffle 21. The welding order is irrelevant. Figure 4 As shown, after the inner insert 2 is completely processed, it is inserted into the inner cavity of the tube body 1. A mounting ring 3 is provided on the intermediate baffle 22 at the end of the inner insert 2 facing the tube inlet of the tube body 1. The mounting ring 3 is connected to the inlet tube sheet of the tube body 1 by a connector, thereby fixing the inner insert 2 in the inner cavity of the tube body 1.

[0059] Example 2

[0060] This embodiment provides a high-efficiency heat exchange tube with a baffle insert for use in a chemical skid. The difference from the high-efficiency heat exchange tube with a baffle insert for use in a chemical skid in the first embodiment is that:

[0061] like Figure 6 As shown, the intermediate baffle 22 has a V-shaped structure and includes a peak ridge 221 extending radially along the tube body 1. The peak ridge 221 divides the intermediate baffle 22 into two inclined baffles 222 sloping from the center of the tube body 1 to either side. Along the flow direction of the fluid within the tube body 1, the peak ridge 221 of the downstream intermediate baffle 22 faces the upstream intermediate baffle 22. When the fluid within the first small chamber 101 passes through the flow holes 211 on both sides and enters the second small chambers 102 on both sides, the fluid flows forward to the peak ridge 221. The guiding effect of the peak ridge 221 and the inclined baffles 222 accelerates the fluid to flow toward the flow holes 211 on both sides and enter the second small chamber 102.

[0062] Further, if Figure 7As shown, the peak ridge 221 of the intermediate baffle 22 extends radially along the tube body 1 to the inner wall surface of the tube body 1. That is, the plane of the peak ridge 221 is parallel to the longitudinal baffle 21, and the flow holes 211 are provided on the longitudinal baffle 21. This allows the fluid in the first small chamber 101 to flow evenly through the flow holes 211 into the second small chamber 102 under the guidance of the peak ridge 221 and the inclined baffle 222.

[0063] In addition, the baffled inner plug-in high-efficiency heat exchange tubes applied to the chemical skid provided in this embodiment are consistent with the baffled inner plug-in high-efficiency heat exchange tubes applied to the chemical skid in Example 1, and are not described again here.

[0064] Example 3

[0065] This embodiment provides a baffled insert high-efficiency heat exchange tube for use in a chemical skid. The difference between this embodiment and the baffled insert high-efficiency heat exchange tube for use in a chemical skid in the first or second embodiment is that:

[0066] like Figure 8 As shown, the airfoil baffle 23 is arranged at an angle with the radial direction of the tube body 1. The airfoil baffle 23 can be arranged to be inclined toward the tube inlet side when extending from the center to the inner wall of the tube body 1 in the radial direction of the tube body 1, thereby accelerating the flow velocity of the fluid at the inner wall of the tube body 1 in the second small cavity 102, further reducing the boundary layer thickness and enhancing the heat transfer effect.

[0067] In addition, the baffled inner plug-in high-efficiency heat exchange tubes applied to the chemical skid provided in this embodiment are consistent with the baffled inner plug-in high-efficiency heat exchange tubes applied to the chemical skid in Example 1 or Example 2, and will not be repeated here.

[0068] Example 4

[0069] This embodiment provides a heat exchanger, including a plurality of high-efficiency heat exchange tubes with baffle inserts applied to chemical skids, as described in any one of Embodiments 1 to 3. The high-efficiency heat exchange tubes with baffle inserts applied to chemical skids extend axially along the heat exchanger and are arranged in the heat exchange cavity of the heat exchanger. The fluid in the tube body 1 exchanges heat with the fluid outside the tube body 1. The arrangement of the insert 2 reduces the thermal resistance in the tube body 1, effectively enhancing the heat transfer effect of the heat exchanger and significantly saving equipment investment. In specific implementation, the heat exchanger, as a key equipment of the chemical skid, can enhance the efficiency of the chemical skid and improve production benefits as its heat transfer efficiency improves.

[0070] The above embodiments merely illustrate the basic principles and features of the present invention. The present invention is not limited to the above embodiments. Various changes and modifications are possible without departing from the spirit and scope of the present invention. Such changes and modifications are within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. The baffled inner plug-in high-efficiency heat exchange tube used in chemical skids is characterized by: include: A tube body (1), the tube body (1) having an inner cavity and a tube inlet and a tube outlet communicated with the inner cavity; An inner plug-in (2) is arranged in the inner cavity, and the inner plug-in (2) includes an intermediate baffle (22), an airfoil baffle (23) and two longitudinal baffles (21), wherein the two longitudinal baffles (21) extend along the axial direction of the tube body (1) to divide the inner cavity into a first cavity and two second cavities located on both sides of the first cavity, wherein the first cavity is opposite to the tube inlet; there are a plurality of intermediate baffles (22), and the plurality of intermediate baffles (22) are arranged in the first cavity at intervals along the axial direction of the tube body (1), dividing the first cavity into a plurality of first small cavities (101); there are a plurality of airfoil baffles (23), and the plurality of airfoil baffles (23) are arranged in the second cavity at intervals along the axial direction of the tube body (1), dividing the second cavity into a plurality of second small cavities (102); A flow hole (211) is provided on the longitudinal partition (21), and the flow hole (211) is used to connect one second small cavity (102) with two first small cavities (101), and two adjacent second small cavities (102) are connected with the same first small cavity (101).

2. The baffled inner plug-in high-efficiency heat exchange tube used in chemical skid according to claim 1 is characterized in that: The intermediate baffles (22) and the wing-shaped baffles (23) are alternately arranged in the axial direction of the tube body (1), and there are a plurality of flow holes (211) along the flow direction of the fluid in the tube body (1); The wing-shaped baffle (23) is flush with the downstream edge of the mth flow hole (211), where m is an odd number; and / or the intermediate baffle (22) is flush with the downstream edge of the nth flow hole (211), where n is an even number.

3. The baffled inner plug-in high-efficiency heat exchange tube used in chemical skid according to claim 1 is characterized in that: The intermediate baffle (22) is a flat plate structure, and the intermediate baffle (22) is arranged parallel to the radial direction of the tube body (1).

4. The baffled inner plug-in high-efficiency heat exchange tube used in chemical skid according to claim 1 is characterized in that: The intermediate baffle (22) is a V-shaped structure having a peak (221) extending radially along the tube body (1), and the peak (221) of the intermediate baffle (22) located downstream faces the intermediate baffle (22) located upstream.

5. The baffled inner plug-in high-efficiency heat exchange tube used in chemical skid according to claim 4 is characterized in that: The peak ridge (221) of the intermediate baffle (22) extends along the radial direction of the tube body (1) to the inner wall surface of the tube body (1).

6. The baffled inner plug-in high-efficiency heat exchange tube used in chemical skid according to claim 1 is characterized in that: The wing-shaped baffle (23) is a flat plate structure, and the wing-shaped baffle (23) is arranged parallel to the radial direction of the tube body (1).

7. The baffled inner plug-in high-efficiency heat exchange tube used in chemical skid according to claim 1 is characterized in that: The wing-shaped baffle (23) is a flat plate structure, and the wing-shaped baffle (23) is arranged at an angle with respect to the radial direction of the tube body (1).

8. The baffled inner plug-in high-efficiency heat exchange tube used in chemical skid according to claim 1 is characterized in that: A plurality of intermediate baffles (22) are evenly spaced along the axial direction of the tube body (1); and / or, The plurality of wing-shaped baffles (23) are evenly spaced along the axial direction of the tube body (1).

9. The baffled inner plug-in high-efficiency heat exchange tube used in chemical skids according to any one of claims 1 to 8, characterized in that: The longitudinal partition (21), the intermediate baffle (22), and the wing-shaped baffle (23) are welded together, and the inner plug-in unit (2) is detachably connected to the tube body (1).

10. A heat exchanger, characterized in that The invention comprises a plurality of baffle insert high-efficiency heat exchange tubes used in chemical skids as described in any one of claims 1 to 9.

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