Spiral baffle plate type heat exchanger

Abstract

The utility model discloses a spiral baffle plate type heat exchanger which comprises a shell, tube plates are installed on the inner walls of the two ends of the shell, the front ends of the tube plates are fixedly connected with a containing groove, a center rod is placed on the inner wall of the containing groove, a sliding groove is formed in the outer surface of the center rod, and a sliding block is connected to the inner wall of the sliding groove in a sliding mode. A spiral plate is fixedly connected to the upper surface of the sliding block, a through hole is formed in the tube plate, a heat exchange tube is installed on the inner wall of the through hole, and the outer surface of the heat exchange tube penetrates through a hole formed in the spiral plate. The flow velocity and the flow uniformity of fluid are improved, axial movement of the center rod is limited, the position stability of the spiral plate is ensured, shaking under fluid impact is avoided, and the spiral plate is further stabilized through the limiting rod in threaded connection with the rear end of the tube plate and the limiting ring fixed to the spiral plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field especially is involved in spiral baffle heat exchanger. BACKGROUND

[0002] In industrial production, the performance of heat exchanger has a great influence on production efficiency and cost control, and the spiral baffle heat exchanger is developed under the background that the problems of traditional heat exchanger are highlighted. The traditional heat exchanger has outstanding problems in fluid flow, for example, the shell fluid flow of the segmental baffle heat exchanger will form a large number of flow dead zones, resulting in energy waste, and the heat transfer efficiency is extremely low, and the flow resistance is large, which greatly increases the power consumption. At the same time, the traditional heat exchanger is difficult to adapt to the change of fluid flow and flow rate, which seriously restricts the continuity and stability of production. In terms of structural stability, the traditional heat exchanger also has many hidden dangers. After a long period of operation, the baffle is easy to loosen and deform under the influence of fluid scouring and temperature change, especially in high temperature and high pressure environment, the connection part of the baffle and other parts is easy to damage, which further causes safety accidents such as leakage. This not only greatly increases the maintenance cost, but also seriously affects the production progress due to equipment downtime, resulting in significant economic losses. The unstable structure in turn affects the fluid flow and heat transfer efficiency, forming a vicious cycle. Because of the above problems, the spiral baffle heat exchanger which can optimize fluid flow and enhance stability emerges as the times require, so as to meet the higher demand of industrial production. SUMMARY

[0003] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] Therefore, the utility model aims at providing spiral baffle heat exchanger, which can solve the problem of low heat transfer efficiency, and can quickly install spiral plate.

[0005] To solve the above technical problems, the utility model provides spiral baffle heat exchanger, adopts the following technical scheme: including the shell, the inner wall of both ends of the shell is installed with the tube sheet, the front end of the tube sheet is fixedly connected with the placing groove, the inner wall of the placing groove is placed with the center rod, the outer surface of the center rod is provided with the sliding groove, the inner wall of the sliding groove is slidably connected with the sliding block, the upper surface of the sliding block is fixedly connected with the spiral plate, the inside of the tube sheet is provided with the through hole, the inner wall of the through hole is installed with the heat exchange pipe, the outer surface of the heat exchange pipe penetrates the hole hole provided in the inside of the spiral plate.

[0006] Optionally, the bottom of the placing groove is fixedly connected with a limiting block, and the limiting block is arranged in the inner side of the chute.

[0007] Through the above technical scheme: the center rod is limited to prevent sliding rod.

[0008] Optionally, the front pipe box is arranged on the front end flange of the shell, and a pipe passage inlet is arranged on the upper end of the front pipe box.

[0009] Through the above technical scheme: the hot fluid enters from the pipe passage inlet on the front pipe box.

[0010] Optionally, the rear pipe box is arranged on the rear end flange of the shell, and a pipe passage outlet is arranged on the lower end of the rear pipe box.

[0011] Through the above technical scheme: when the heat exchange is completed, the cold hot fluid flows out through the pipe passage outlet on the lower end of the rear pipe box.

[0012] Optionally, a shell passage inlet is arranged on the upper end of the shell, and a shell passage outlet is arranged on the lower end of the shell.

[0013] Through the above technical scheme: the cold fluid flows into the shell passage space from the shell passage inlet on the upper end of the shell and is discharged from the shell passage outlet on the lower end of the shell.

[0014] Optionally, a threaded hole is arranged on the rear end of the tube plate, and a limiting rod is threadedly connected with the inner wall of the threaded hole through a threaded head.

[0015] Through the above technical scheme: the limiting rod is threadedly fixed to prevent the displacement of the external spiral plate.

[0016] Optionally, a limiting ring is slidably connected with the outer surface of the limiting rod, and the outer side of the limiting ring is fixedly connected with the spiral plate.

[0017] Through the above technical scheme: the limiting rod limits the spiral plate through the limiting ring.

[0018] Optionally, a flow guide groove is arranged on the outer surface of the center rod.

[0019] Through the above technical scheme: the flow guide groove is spiral-shaped, and the flow guide groove optimizes the fluid flow path.

[0020] In summary, the utility model has at least one of the following beneficial effects:

[0021] 1. The guide grooves on the outer surface of the center rod can guide the shell-side fluid to flow more smoothly, reduce fluid turbulence and resistance, and improve the uniformity of fluid velocity and flow rate. The spiral plates can slide on the grooves of the center rod, and the spacing and angle of the spiral plates can be flexibly adjusted according to the actual working conditions to further optimize the fluid flow path, ensure full contact between the fluid and the heat exchange tubes, enhance the heat transfer effect, and improve the heat exchange efficiency of the heat exchanger.

[0022] 2. The heat exchanger adopts multiple measures in its structure to enhance stability. The limiting block at the bottom of the placement tank cooperates with the central rod slide groove to restrict the axial movement of the central rod, ensuring the stability of the spiral plate and preventing shaking under fluid impact. The limiting rod at the rear end of the tube sheet and the limiting ring fixed to the spiral plate further stabilize the spiral plate, ensuring the structural stability of the heat exchanger during operation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0027] Figure 4 for Figure 3 Enlarged diagram of point A in the diagram;

[0028] Figure 5 This is a schematic diagram of the rapid installation of the spiral plate of this utility model;

[0029] Figure 6 This is a schematic diagram of the spiral plate limiting ring of this utility model.

[0030] Explanation of reference numerals in the attached diagram: 1. Outer shell; 2. Front tube box; 3. Rear tube box; 4. Tube-side inlet; 5. Shell-side inlet; 6. Shell-side outlet; 7. Tube-side outlet; 8. Center rod; 9. Limiting rod; 10. Spiral plate; 11. Heat exchange tube; 12. Tube sheet; 13. Placement groove; 14. Limiting block; 15. Slide groove; 16. Guide groove; 17. Sliding block; 18. Threaded head; 19. Threaded hole; 20. Limiting ring. Detailed Implementation

[0031] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0032] Referring to Figures 1-6 , the spiral baffle plate heat exchanger of the embodiment of the present application comprises an outer shell 1, a front tube box 2 connected to the front end flange of the outer shell 1, a tube passage inlet 4 arranged at the upper end of the front tube box 2, a rear tube box 3 connected to the rear end flange of the outer shell 1, a tube passage outlet 7 arranged at the lower end of the rear tube box 3, a shell passage inlet 5 arranged at the upper end of the outer shell 1, a shell passage outlet 6 arranged at the lower end of the outer shell 1, a tube plate 12 installed on the inner wall of the two ends of the outer shell 1, a placing groove 13 fixedly connected to the front end of the tube plate 12, a center rod 8 placed in the inner wall of the placing groove 13, a sliding groove 15 arranged on the outer surface of the center rod 8, a limiting block 14 fixedly connected to the bottom of the placing groove 13, the limiting block 14 being placed on the inner side of the sliding groove 15, a sliding block 17 slidingly connected to the inner wall of the sliding groove 15, a spiral plate 10 fixedly connected to the upper surface of the sliding block 17, a through hole arranged in the inner part of the tube plate 12, a heat exchange tube 11 installed on the inner wall of the through hole, the heat exchange tube 11 penetrating the hole arranged in the inner part of the spiral plate 10, a threaded hole 19 arranged at the rear end of the tube plate 12, a limiting rod 9 threadedly connected to the inner wall of the threaded hole 19 through a threaded head 18, a limiting ring 20 slidingly connected to the outer surface of the limiting rod 9, the limiting ring 20 being fixedly connected to the outer side of the spiral plate 10, a flow guide groove 16 arranged on the outer surface of the center rod 8, the flow guide groove 16 being spiral-shaped, and the flow guide groove 16 is used for optimizing the fluid flow path.

[0033] Working principle: when the equipment is started, the fluid flows into along a specific path, the hot fluid enters from the tube passage inlet 4 on the front tube box 2, and then enters the heat exchange tube 11 installed in the through hole of the tube plate 12, at the same time, the cold fluid flows into the shell passage space from the shell passage inlet 5 at the upper end of the outer shell 1, in the shell passage, the spiral plate 10 plays a key guiding role in the flow of the cold fluid, the spiral plate 10 is slidingly connected to the sliding groove 15 on the center rod 8 through the sliding block 17, the spiral-shaped flow guide groove 16 on the outer surface of the center rod 8 plays a guiding role in the cold fluid, after the cold fluid enters the shell passage, it flows along the spiral channel formed by the spiral plate 10 under the guidance of the flow guide groove 16, the limiting block 14 at the bottom of the placing groove 13 is placed in the sliding groove 15, which limits the axial movement of the center rod 8, ensures the stable position of the spiral plate 10, and enables the cold fluid to stably spiral forward, this spiral flow mode greatly prolongs the residence time of the cold fluid in the shell passage, increases the contact opportunity of the cold fluid with the heat exchange tube 11, optimizes the fluid flow path, and effectively improves the heat transfer efficiency.

[0034] The heat exchange is mainly carried out on the tube wall of the heat exchange tube 11, the hot fluid flows in the heat exchange tube 11, the heat carried by the hot fluid is transmitted to the tube wall in the form of heat conduction, and then the tube wall transmits the heat to the cold fluid in the shell 1, in the process, the threaded hole 19 arranged at the rear end of the tube plate 12 is connected with the limiting rod 9 through the threaded head 18, the limiting ring 20 slidingly connected with the outer surface of the limiting rod 9 is fixed with the spiral baffle 10, the structure further stabilizes the spiral baffle 10, and guarantees the stable heat exchange, under the driving of the temperature difference, the cold and hot fluids realize efficient heat transmission, the hot fluid is cooled, and the cold fluid is heated.

[0035] When the heat exchange is completed, the cold hot fluid flows out through the tube pass outlet 7 at the lower end of the rear tube box 3, and the hot cold fluid heated by absorbing heat flows out from the shell pass outlet 6 at the lower end of the shell 1, in the whole process, the components cooperate closely, efficient heat exchange is realized, compared with the traditional heat exchanger, the spiral baffle heat exchanger has obvious advantages in energy consumption reduction and equipment operation stability improvement, the unique structure and working principle make it widely used in many fields such as chemical industry, energy and refrigeration, and provide solid guarantee for the rational utilization of heat and the stable operation of process in industrial production, and effectively promote the efficient development of related industries.

[0036] The above are preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: all equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A spiral baffle heat exchanger, comprising a shell (1), characterized in that: Tube sheets (12) are installed on the inner walls of both ends of the outer shell (1). A placement groove (13) is fixedly connected to the front end of the tube sheet (12). A central rod (8) is placed on the inner wall of the placement groove (13). A sliding groove (15) is provided on the outer surface of the central rod (8). A slider (17) is slidably connected to the inner wall of the sliding groove (15). A spiral plate (10) is fixedly connected to the upper surface of the slider (17). A through hole is provided inside the tube sheet (12). A heat exchange tube (11) is installed on the inner wall of the through hole. The outer surface of the heat exchange tube (11) penetrates the hole provided inside the spiral plate (10).

2. The spiral baffle heat exchanger according to claim 1, characterized in that: A limiting block (14) is fixedly connected to the bottom of the placement groove (13), and the limiting block (14) is placed inside the slide groove (15).

3. The spiral baffle heat exchanger according to claim 1, characterized in that: The front flange of the outer shell (1) is connected to the front pipe box (2), and the upper end of the front pipe box (2) is provided with a pipe inlet (4).

4. The spiral baffle heat exchanger according to claim 1, characterized in that: The rear flange of the outer shell (1) is connected to the rear pipe box (3), and the lower end of the rear pipe box (3) is provided with a pipe outlet (7).

5. The spiral baffle heat exchanger according to claim 1, characterized in that: The upper end of the outer shell (1) is provided with a shell-side inlet (5), and the lower end of the outer shell (1) is provided with a shell-side outlet (6).

6. The spiral baffle heat exchanger according to claim 1, characterized in that: The tube sheet (12) has a threaded hole (19) at its rear end, and the inner wall of the threaded hole (19) is threadedly connected to a limit rod (9) through a threaded head (18).

7. The spiral baffle heat exchanger according to claim 6, characterized in that: The outer surface of the limiting rod (9) is slidably connected to a limiting ring (20), and the outer side of the limiting ring (20) is fixedly connected to the spiral plate (10).

8. The spiral baffle heat exchanger according to claim 1, characterized in that: The outer surface of the central rod (8) is provided with a flow guide groove (16).

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