Flow guide pipe for heat exchanger

Abstract

The utility model relates to the technical field of flow guide pipes, in particular to a flow guide pipe for a heat exchanger, which comprises two first fixing plates, and second fixing plates are fixedly mounted in front of and behind a space between the two first fixing plates. A plurality of fins are evenly and fixedly installed between the two first fixing plates at equal intervals. According to the flow guide pipe for the heat exchanger, the first fixing plate, the second fixing plate, the fins, the flow guide pipe body, the mounting hole, the inserting groove, a first pull rope, a positioning barrel, a second pull rope, a guide hole, an annular limiting plate, an annular sliding way, an annular operation plate, a sliding block, a sliding groove, a positioning groove, a positioning block, a spring, an I-shaped fixing frame and a movable plate are used in cooperation; and a simple quick release structure is provided, and once damage occurs, a worker can quickly rotate the annular operation plate to release a fixing structure of the flow guide pipe, so that quick disassembly of the flow guide pipe is realized.

Description

Technical Field

[0001] This utility model relates to the field of flow guide technology, specifically a flow guide for a heat exchanger. Background Technology

[0002] Heat exchangers are widely used devices in industrial production processes for exchanging heat between two fluids. Existing heat exchangers typically consist of a shell, tube bundle, and flow guide tubes. The main function of the flow guide tubes is to guide the fluid to be evenly distributed within the heat exchanger, thereby improving heat exchange efficiency.

[0003] Chinese Patent Publication No. CN219390675U discloses a flow guide tube for a heat exchanger, comprising a rear fixed plate, a front fixed plate, fins, and a flow guide tube. The fins are equidistantly arranged between the rear and front fixed plates. The flow guide tube is U-shaped, with its two arms sequentially penetrating the rear fixed plate, the fins, and the front fixed plate, extending to the side of the front fixed plate opposite to the fins. The flow guide tube has an internal valve-like flow-blocking structure. By providing a first valve and a second valve, excessive water pressure inside the flow guide tube can prevent the tube wall from rupturing.

[0004] Regarding the aforementioned technologies, the flow guide tube has some shortcomings. In actual use, the structural design of the flow guide tube does not take into account the need for quick disassembly, which means that when the flow guide tube needs to be replaced or repaired, a complex disassembly operation must be performed, which may require the removal of components such as front and rear fixing plates and fins. This is not only time-consuming and labor-intensive, but also increases the difficulty and risk of operation. Therefore, it is necessary to provide a flow guide tube for heat exchangers to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a flow guide tube for a heat exchanger to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A flow guide tube for a heat exchanger, comprising:

[0008] The first fixing plate consists of two plates. A second fixing plate is fixedly installed in front of and behind the two first fixing plates. A number of fins are evenly fixedly installed between the two first fixing plates at equal intervals. The fins are located between the two second fixing plates. A number of mounting holes are provided on the second fixing plates and the fins. A matching guide tube is movably inserted into the second fixing plates and the fins through the mounting holes. Both ends of the guide tube extend to the front of the front of one of the second fixing plates through the mounting holes.

[0009] Symmetrically distributed annular limiting plates are fixedly installed on the rear side of the outer wall of the guide tube. Slots are provided on both sides of the mounting hole on the back of the other second fixing plate. Positioning cylinders are fixedly installed on both sides of the front of the annular limiting plate, and the positioning cylinders are engaged with the slots. An operating mechanism is provided on the back of the annular limiting plate, and a locking mechanism is provided on the positioning cylinder.

[0010] Preferably, the locking mechanism includes two positioning blocks, which are symmetrically distributed and slidably inserted into the outer wall of the positioning cylinder. The inner wall of the slot is provided with positioning grooves corresponding to the position and number of the positioning blocks, and the positioning grooves are locked with the positioning blocks. An I-shaped fixing frame is fixedly installed inside the positioning cylinder. A spring is fixedly connected between the end of the positioning block inside the positioning cylinder and the I-shaped fixing frame. A movable plate is slidably installed inside the positioning cylinder behind the I-shaped fixing frame. A first pull rope is fixedly connected to the end of each of the two positioning blocks inside the positioning cylinder, and one end of the first pull rope passes through the I-shaped fixing frame and is fixedly connected to the front of the movable plate.

[0011] Preferably, the operating mechanism includes an annular slide rail, which is located on the back of the annular limiting plate. A groove is provided on the inner wall of the annular slide rail, and a plurality of sliders are slidably mounted on the groove. An annular operating plate is fixedly mounted on the back of the sliders, and the annular operating plate is slidably connected to the back of the annular limiting plate. A guide hole corresponding to the position and number of positioning cylinders is provided on the annular limiting plate. A second pull rope corresponding to the position and number of positioning cylinders is fixedly mounted on the front of the annular operating plate, and one end of the second pull rope passes through the guide hole and extends into the interior of the positioning cylinder, where it is fixedly connected to the back of the movable plate.

[0012] Preferably, the positioning cylinder has guide wheels fixedly installed inside, corresponding to the position and number of the first pull ropes, and the guide wheels slide in contact with the corresponding first pull ropes.

[0013] Preferably, the annular slide is fixedly installed with guide rings corresponding to the position and number of the second pull ropes, and the second pull ropes pass through the interior of the guide rings at the corresponding positions and are slidably connected to them.

[0014] Preferably, a number of anti-slip strips are adhered to the outer wall of the annular operating plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model utilizes the combined use of a first fixing plate, a second fixing plate, fins, a guide tube, mounting holes, slots, a first pull rope, a positioning cylinder, a second pull rope, a guide hole, an annular limiting plate, an annular slide, an annular operating plate, a slider, a slide groove, a positioning groove, a positioning block, a spring, an I-shaped fixing frame, and a movable plate. During use, the guide tube features a simple quick-release structure. In case of damage, workers can quickly disassemble the guide tube by rotating the annular operating plate, thus saving time and effort, reducing the difficulty and risk of operation, and making it highly practical.

[0017] 2. By using the guide ring and guide wheel in combination, the present invention requires the second pull rope and the first pull rope to move the corresponding structure during the disassembly and assembly of the guide tube. During the pulling process, the first pull rope and the second pull rope are guided by the guide wheel and the guide ring to limit their movement path, avoid unnecessary wear, and improve the stability and reliability of the quick-release structure of the guide tube during use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a top sectional view of the present invention.

[0020] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point B.

[0022] In the diagram: 1. First fixing plate; 2. Second fixing plate; 3. Fin; 4. Guide tube; 5. Mounting hole; 6. Slot; 7. First pull rope; 8. Positioning cylinder; 9. Second pull rope; 10. Guide hole; 11. Annular limiting plate; 12. Guide ring; 13. Guide wheel; 14. Annular slide; 15. Annular operating plate; 16. Slider; 17. Slide groove; 18. Positioning groove; 19. Positioning block; 20. Spring; 21. I-shaped fixing frame; 22. Movable plate. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] 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.

[0027] Please see Figures 1-4 One embodiment provided by this utility model:

[0028] A flow guide tube for a heat exchanger, comprising:

[0029] There are two first fixing plates 1. A second fixing plate 2 is fixedly installed in front of and behind the two first fixing plates 1. A number of fins 3 are fixedly installed at equal intervals between the two first fixing plates 1. The fins 3 are located between the two second fixing plates 2. A number of mounting holes 5 are opened on the second fixing plates 2 and the fins 3. A flow guide tube 4 that is adapted to the second fixing plates 2 and the fins 3 is movably inserted through the mounting holes 5. The two ends of the flow guide tube 4 extend to the front of one of the second fixing plates 2 through the mounting holes 5.

[0030] Symmetrically distributed annular limiting plates 11 are fixedly installed on the rear side of the outer wall of the guide pipe 4. Slots 6 are provided on both sides of the mounting hole 5 on the back of another second fixing plate 2. Positioning cylinders 8 are fixedly installed on both sides of the front of the annular limiting plate 11, and the positioning cylinders 8 are engaged with the slots 6. An operating mechanism is provided on the back of the annular limiting plate 11, and a snap-fit ​​mechanism is provided on the positioning cylinders 8.

[0031] The locking mechanism includes two positioning blocks 19, which are symmetrically distributed and slidably inserted into the outer wall of the positioning cylinder 8. The inner wall of the slot 6 is provided with positioning grooves 18 corresponding to the position and number of positioning blocks 19, and the positioning grooves 18 are locked with the positioning blocks 19. An I-shaped fixing frame 21 is fixedly installed inside the positioning cylinder 8. A spring 20 is fixedly connected between the end of the positioning block 19 inside the positioning cylinder 8 and the I-shaped fixing frame 21. A movable plate 22 is slidably installed inside the positioning cylinder 8 behind the I-shaped fixing frame 21. A first pull rope 7 is fixedly connected to the end of each of the two positioning blocks 19 inside the positioning cylinder 8, and one end of the first pull rope 7 passes through the I-shaped fixing frame 21 and is fixedly connected to the front of the movable plate 22, ensuring the stability of the positioning cylinder 8 locked inside the slot 6.

[0032] In one embodiment, the operating mechanism includes an annular slide 14, which is located on the back of the annular limiting plate 11. A groove 17 is provided on the inner wall of the annular slide 14, and a plurality of sliders 16 are slidably mounted on the groove 17. An annular operating plate 15 is fixedly mounted on the back of the sliders 16, and the annular operating plate 15 is slidably connected to the back of the annular limiting plate 11. A guide hole 10 corresponding to the position and number of positioning cylinders 8 is provided on the annular limiting plate 11. A second pull rope 9 corresponding to the position and number of positioning cylinders 8 is fixedly mounted on the front of the annular operating plate 15, and one end of the second pull rope 9 passes through the guide hole 10 and extends into the interior of the positioning cylinder 8 and is fixedly connected to the back of the movable plate 22, thereby realizing the quick fixing and release of the positioning cylinder 8 inside the slot 6.

[0033] In one preferred embodiment, a guide wheel 13 corresponding to the position and number of the first pull rope 7 is fixedly installed inside the positioning cylinder 8, and the guide wheel 13 slides in contact with the corresponding first pull rope 7 to guide the first pull rope 7, avoid unnecessary contact wear, and make it more durable.

[0034] In one embodiment, a guide ring 12 corresponding to the position and number of the second pull rope 9 is fixedly installed inside the annular slide 14, and the second pull rope 9 passes through the interior of the guide ring 12 at the corresponding position and slides with it, so as to guide the second pull rope 9, avoid unnecessary contact wear, and make it more durable.

[0035] In one preferred embodiment, several anti-slip strips are adhered to the outer wall of the annular operating plate 15, which can provide better grip, making it more convenient and safer for the operator to rotate the annular operating plate 15, reducing the risk of slippage, and improving the comfort and efficiency of operation.

[0036] The working principle of this utility model is as follows: all parts not mentioned in this device are the same as or can be implemented using existing technology. When the guide tube 4 is damaged and needs to be disassembled and replaced, the annular operating plate 15 on the outer wall of the damaged guide tube 4 is rotated when the heat exchanger is not working. The rotation of the annular operating plate 15 drives the slider 16 to slide on the slide groove 17. Through the cooperation of the slider 16 and the slide groove 17, the stability of the annular operating plate 15 during rotation is ensured. The rotation of the annular operating plate 15 will pull the movable plate 22 to move through the second pull rope 9. The movement of the movable plate 22 will pull the two positioning blocks 19 to move relative to each other into the interior of the positioning cylinder 8 through the first pull rope 7, so that the positioning blocks 19 that were originally engaged with the positioning groove 18 are disengaged from its interior. After the positioning effect of the positioning blocks 19 and the positioning groove 18 on the positioning cylinder 8 is released, the guide tube 4 can be pulled directly out from the interior of the mounting hole 5 on the second fixing plate 2 and the fin 3, thus completing the disassembly of the guide tube 4. During installation, using the same principle, first rotate the annular operating plate 15 to retract the positioning block 19 into the positioning cylinder 8. Then, insert the guide tube 4 into the mounting holes 5 on the second fixing plate 2 and fin 3. Finally, the positioning cylinder 8 on the annular limiting plate 11 will be inserted into the slot 6 on the second fixing plate 2. At this time, the limiting of the annular operating plate 15 is released, and the positioning block 19 will be engaged with the positioning groove 18 under the elastic action of the spring 20, ensuring the stable engagement of the positioning cylinder 8 and the slot 6. This ensures that the guide tube 4 is firmly fixed to the second fixing plate 2 and fin 3. During use, the guide tube 4 has a simple quick-release structure. If it is damaged, the operator can quickly remove the fixing structure of the guide tube 4 by rotating the annular operating plate 15, thus achieving quick disassembly. This saves time and effort, reduces the difficulty and risk of operation, and is highly practical.

[0037] During use, the second pull rope 9 and the first pull rope 7 are used to move the corresponding structure during the disassembly and assembly of the guide tube 4. As the first pull rope 7 and the second pull rope 9 are pulled, the guide wheel 13 and the guide ring 12 will guide and limit the movement path to avoid unnecessary wear and improve the stability and reliability of the quick-release structure of the guide tube 4 during use.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flow guide tube for a heat exchanger, characterized in that, It includes: The first fixing plate (1) has two first fixing plates (1). A second fixing plate (2) is fixedly installed in front of and behind the two first fixing plates (1). A number of fins (3) are fixedly installed at equal intervals between the two first fixing plates (1). The fins (3) are located between the two second fixing plates (2). A number of mounting holes (5) are opened on the second fixing plate (2) and the fins (3). A flow guide (4) that matches the second fixing plate (2) and the fins (3) is movably inserted through the mounting holes (5). The two ends of the flow guide (4) extend to the front of the second fixing plate (2) through the mounting holes (5). A symmetrically distributed annular limiting plate (11) is fixedly installed on the rear side of the outer wall of the guide pipe (4). The back of the other second fixing plate (2) is provided with slots (6) on both sides of the mounting hole (5). Positioning cylinders (8) are fixedly installed on both sides of the front of the annular limiting plate (11), and the positioning cylinders (8) are engaged with the slots (6). An operating mechanism is provided on the back of the annular limiting plate (11), and a snap-fit ​​mechanism is provided on the positioning cylinder (8).

2. The heat exchanger guide tube according to claim 1, characterized in that: The snap-fit ​​mechanism includes two positioning blocks (19), which are symmetrically distributed and slidably inserted into the outer wall of the positioning cylinder (8). The inner wall of the slot (6) is provided with positioning grooves (18) corresponding to the position and number of the positioning blocks (19), and the positioning grooves (18) are snapped into the positioning blocks (19). An I-shaped fixing frame (21) is fixedly installed inside the positioning cylinder (8). A spring (20) is fixedly connected between one end of the positioning block (19) inside the positioning cylinder (8) and the I-shaped fixing frame (21). A movable plate (22) is slidably installed inside the positioning cylinder (8) behind the I-shaped fixing frame (21). One end of each of the two positioning blocks (19) inside the positioning cylinder (8) is fixedly connected to a first pull rope (7), and one end of the first pull rope (7) passes through the I-shaped fixing frame (21) and is fixedly connected to the front of the movable plate (22).

3. A heat exchanger guide tube according to claim 1, characterized in that: The operating mechanism includes an annular slide (14), which is located on the back of the annular limiting plate (11). A groove (17) is provided on the inner wall of the annular slide (14). Several sliders (16) are slidably installed on the groove (17). An annular operating plate (15) is fixedly installed on the back of the slider (16), and the annular operating plate (15) is slidably connected to the back of the annular limiting plate (11). A guide hole (10) corresponding to the position and number of the positioning cylinder (8) is provided on the annular limiting plate (11). A second pull rope (9) corresponding to the position and number of the positioning cylinder (8) is fixedly installed on the front of the annular operating plate (15), and one end of the second pull rope (9) passes through the guide hole (10) and extends into the interior of the positioning cylinder (8) and is fixedly connected to the back of the movable plate (22).

4. A heat exchanger guide tube according to claim 2, characterized in that: The positioning cylinder (8) is fixedly installed with guide wheels (13) corresponding to the position and number of the first pull rope (7), and the guide wheels (13) slide in contact with the corresponding first pull rope (7).

5. A heat exchanger guide tube according to claim 3, characterized in that: The annular slide (14) is fixedly installed with guide rings (12) corresponding to the position and number of the second pull ropes (9), and the second pull ropes (9) pass through the interior of the guide rings (12) at the corresponding positions and slide to connect with them.

6. A heat exchanger guide tube according to claim 3, characterized in that: Several anti-slip strips are adhered to the outer wall of the annular operating plate (15).

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