High-temperature tubular heat exchanger

Abstract

The utility model discloses a high-temperature tubular heat exchanger, which relates to the technical field of heat exchangers and comprises a pipeline shell, two tube plates and a plurality of tube bundles, the two tube plates are respectively connected to two ends of the pipeline shell in a closed manner, two ends of each tube bundle are respectively connected with the two tube plates, a first mixing drum and a plurality of second mixing drums are coaxially arranged in the shell, and outer rings of the first mixing drum and the second mixing drums are rotatably mounted in the shell. A tube bundle is embedded in the inner ring, the first cylinder is arranged below the water inlet, the first outer cylinder is provided with an inclined plate, and the second outer cylinder is provided with a spoiler and a Z-shaped folding rod; through special installation layout, the first mixing drum and the second mixing drum are stably connected and flexibly rotate through bearings; in the working process, inflow water pushes the first outer barrel and the inclined plates to stir to change the flow direction, reduce dead zones and increase turbulent flow, when water flows through the baffle plates, the second outer barrel, the spoilers and the Z-shaped folding rods are driven to expand stirring, heat transfer efficiency is enhanced, the water flows are mixed evenly, working efficiency, stability and overall performance are improved, and adaptability and competitiveness of the heat exchanger are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a high-temperature tubular heat exchanger. Background Technology

[0002] In industrial heat exchange processes, tubular heat exchangers play a crucial role. However, as industrial production demands increasingly higher heat exchange efficiency, the limitations of traditional tubular heat exchangers have become increasingly apparent. Tubular heat exchangers typically consist of components such as a pipe shell, tube sheet, tube bundle, and baffles. While baffles are used to some extent to change the flow direction of the fluid and enhance its turbulence to promote heat exchange, dead zones can easily form between the baffles and the pipe shell, as well as in the area formed by the baffles themselves.

[0003] In these flow dead zones, the fluid velocity is extremely low, even approaching zero. Due to the slow velocity, the heat transfer efficiency is greatly reduced, and the heat exchanger cannot fully perform its intended heat exchange efficiency. For high-temperature tubular heat exchangers, this insufficient heat transfer is even more critical, as precise control and efficient heat exchange are required under high-temperature conditions. For example, in high-temperature reaction heat recovery processes in some chemical production processes, or in high-temperature heat exchange links of steam in the power industry, if flow dead zones exist and heat cannot be transferred in a timely and effective manner, it will not only waste energy, but may also affect the stability and safety of the entire system due to local heat accumulation, and may even cause equipment failure or production accidents, seriously restricting the efficient operation and sustainable development of industrial production. In view of this, this paper proposes a high-temperature tubular heat exchanger. Utility Model Content

[0004] The main objective of this invention is to provide a high-temperature tubular heat exchanger that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A high-temperature tubular heat exchanger includes a pipe shell, two tube sheets, and several parallel tube bundles. The two tube sheets are respectively sealed at both ends of the pipe shell. The outer walls of both ends of the several tube bundles are respectively sealed to the two tube sheets. A first mixing cylinder and several second mixing cylinders are coaxially installed inside the pipe shell. The first mixing cylinder includes a first outer cylinder, and the second mixing cylinder includes a second outer cylinder. The first outer cylinder and the second outer cylinder are both coaxially rotatably installed inside the pipe shell.

[0007] The inner circle of the first mixing cylinder and the second mixing cylinder is respectively embeddedly installed on the periphery of the plurality of tube bundles, the first mixing cylinder is arranged below the water inlet of the pipeline shell, the periphery of the first outer cylinder is fixedly installed with a swash plate, the swash plate and the central axis of the first outer cylinder are parallel to each other, the periphery of the second outer cylinder is fixedly installed with a spoiler, and the straight line where the spoiler is located and the central axis of the second outer cylinder are non-coplanar.

[0008] Preferably, the first mixing cylinder further comprises a first inner cylinder, the inner circle of the first inner cylinder is provided with a plurality of first positioning grooves embedded with the outer wall of the tube bundle, the first inner cylinder is embeddedly installed on the periphery of the plurality of tube bundles through the plurality of first positioning grooves of the inner circle, and the first outer cylinder is coaxially and rotatably installed on the periphery of the first inner cylinder.

[0009] Preferably, the second mixing cylinder further comprises a second inner cylinder, the inner circle of the second inner cylinder is provided with a plurality of second positioning grooves embedded with the outer wall of the tube bundle, the second inner cylinder is embeddedly installed on the periphery of the plurality of tube bundles through the plurality of second positioning grooves of the inner circle, and the second outer cylinder is coaxially and rotatably installed on the periphery of the second inner cylinder.

[0010] Preferably, the first inner cylinder is coaxially connected with the first outer cylinder between the outer circle of the first inner cylinder and the inner circle of the first outer cylinder.

[0011] Preferably, the second inner cylinder is coaxially connected with the second outer cylinder between the outer circle of the second inner cylinder and the inner circle of the second outer cylinder.

[0012] Preferably, a plurality of baffle plates are arranged on the plurality of tube bundles at equal intervals, and a plurality of second mixing cylinders are respectively arranged between the plurality of baffle plates.

[0013] Preferably, the two ends of the spoiler are fixedly installed with Z-shaped folding rods.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses, through first mixed cylinder and a plurality of second mixed cylinder inlaying installation in the periphery of a plurality of tube bundles, and first mixed cylinder is located below the water inlet, and a plurality of second mixed cylinder is placed between a plurality of baffle, collaborative operation, the first outer tube of first mixed cylinder and first inner tube are coaxial rotation connection through first bearing, and the second outer tube of second mixed cylinder and second inner tube are coaxial rotation connection by second bearing, guarantee the stable connection and flexible rotation function of first mixed cylinder and second mixed cylinder, in the working process, when the water inflow, the water flow pushes the rotation of first outer tube, and the water flow below the water inlet is stirred by the inclined plate, changes the flow direction, reduces the flow dead zone, enhances the turbulence degree, and when the water flow rounds a plurality of baffles, the second outer tube is rotated with the spoiler of second mixed cylinder, and the stirring range is enlarged by the spoiler and Z-shaped folding rod, and the flow dead zone is continuously reduced, and the heat transfer efficiency is greatly strengthened, simultaneously, the collaborative action of first outer tube rotation and inclined plate and second outer tube rotation, spoiler and Z-shaped folding rod, fully stir mixed water flow, make the fluid mix evenly in the whole pipeline shell, avoid local temperature difference too big, further improve the work efficiency and stability of heat exchanger, thereby realize efficient, stable and uniform heat transfer and exchange, the overall performance and reliability of heat exchanger are improved significantly, make it have stronger adaptability and competitiveness in numerous heat exchange scenes. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of the utility model,

[0017] Figure 2 It is the sectional view of the pipeline shell in the utility model,

[0018] Figure 3 It is the structure schematic diagram of first mixed cylinder in the utility model,

[0019] Figure 4 It is the structure schematic diagram of second mixed cylinder in the utility model,

[0020] Figure 5 It is the local enlarged view of the utility model Figure 4 .

[0021] In the drawing: 1, pipeline shell, 2, first mixed cylinder, 21, first inner tube, 22, first positioning groove, 23, first bearing, 24, first outer tube, 25, inclined plate, 3, second mixed cylinder, 31, second inner tube, 32, second positioning groove, 33, second bearing, 34, second outer tube, 35, spoiler, 36, Z-shaped folding rod, 4, tube sheet, 5, tube bundle, 6, baffle. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, achieve purposes and effects of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments.

[0023] Referring to Figures 1-5 As shown in the drawings, a high-temperature tube heat exchanger comprises a pipe shell 1, two tube sheets 4, a plurality of parallel tube bundles 5 and equidistantly arranged baffles 6. The two tube sheets 4 are respectively tightly mounted at the two open ends of the pipe shell 1, and the outer walls of the two ends of the plurality of tube bundles 5 are tightly connected to the two tube sheets 4. The plurality of baffles 6 are installed in a staggered manner on the tube bundles 5.

[0024] Referring to Figure 1 And Figure 2 Inside the pipe shell 1, a first mixing cylinder 2 and a plurality of second mixing cylinders 3 are coaxially installed. The outer diameters of the first mixing cylinder 2 and the second mixing cylinders 3 are slightly smaller than the inner diameter of the pipe shell 1, and the inner circles of the first mixing cylinder 2 and the second mixing cylinders 3 are cleverly embedded and installed on the periphery of the tube bundles 5. Among them, the first mixing cylinder 2 is located below the water inlet of the pipe shell 1, and the pipe inlet connected to the upper left side of the pipe shell 1 is the water inlet. The pipe outlet connected to the lower right side of the pipe shell 1 is the water outlet. The plurality of second mixing cylinders 3 are respectively arranged between the baffles 6.

[0025] Referring to Figure 3 The first mixing cylinder 2 comprises a first outer cylinder 24 and a first inner cylinder 21. The outer circle of the first inner cylinder 21 is coaxially connected to the inner circle of the first outer cylinder 24 through a first bearing 23. The first outer cylinder 24 can rotate coaxially in the pipe shell 1. The inner circle of the first inner cylinder 21 is provided with a plurality of first positioning grooves 22 embedded with the outer wall of the tube bundle 5. Therefore, the first inner cylinder 21 is stably embedded and installed on the periphery of the tube bundle 5. The first outer cylinder 24 is coaxially rotated on the periphery of the first inner cylinder 21. The periphery of the first outer cylinder 24 is further fixedly installed with an inclined plate 25. The inclined plate 25 is parallel to the central axis of the first outer cylinder 24, and the line connecting the lower end of the inclined plate 25 and the central axis of the first outer cylinder 24 is obliquely arranged with the inclined plate 25. When water flows into the water inlet of the pipe shell 1 and reaches the upper side of the first outer cylinder 24, the inclined plate 25 can guide the rotation of the first outer cylinder 24.

[0026] Referring to Figure 4 And Figure 5 The second mixing cylinder 3 comprises a second outer cylinder 34 and a second inner cylinder 31. The outer circle of the second inner cylinder 31 is coaxially connected to the inner circle of the second outer cylinder 34 through a second bearing 33. The inner circle of the second inner cylinder 31 is provided with a plurality of second positioning grooves 32 embedded with the outer wall of the tube bundle 5, so that the second inner cylinder 31 can be smoothly embedded on the periphery of the tube bundle 5. The second outer cylinder 34 is coaxially rotated on the periphery of the second inner cylinder 31 and rotates in the pipe shell 1. The periphery of the second outer cylinder 34 is fixedly installed with a spoiler 35. The straight line where the spoiler 35 is located is out of the plane of the central axis of the second outer cylinder 34. The two ends of the spoiler 35 are fixedly installed with Z-shaped folding rods 36, and the ends of the Z-shaped folding rods 36 are closer to the central axis of the second outer cylinder 34 relative to the spoiler 35, for increasing the stirring range of the second outer cylinder 34.

[0027] In the embodiment, when the water inlet of the pipeline shell 1 is filled with water, the water flow pushes the plurality of inclined plates 25 on the first outer cylinder 24 of the first mixing cylinder 2 to rotate in sequence, and the rotating first outer cylinder 24 can mix and stir the water flow below the water inlet of the pipeline shell 1, effectively change the flow direction of the fluid in the pipeline shell 1, reduce the flow dead zone, enhance the turbulent degree of the fluid in the pipeline shell 1, and further improve the heat transfer efficiency.

[0028] When the water flow in the pipeline shell 1 flows from the water inlet to the water outlet in a wave shape around the plurality of baffle plates 6 in sequence, the flowing water flow is opposite to the plurality of spoiler plates 35 of the outer ring of the second mixing cylinder 3, thereby pushing the second outer cylinder 34 of the outer ring of the second mixing cylinder 3 to rotate, and the rotating second outer cylinder 34 can mix and stir the water flow flowing in the pipeline shell 1, and drive the Z-shaped folding rod 36 to rotate, further expand the range of the stirred water flow, reduce the flow dead zone, and effectively improve the heat transfer efficiency.

[0029] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-temperature tube heat exchanger comprising a tube shell (1), two tube sheets (4) and a plurality of tube bundles (5) parallel to each other, the two tube sheets (4) being respectively closed and mounted at the two open ends of the tube shell (1), and the two end walls of the plurality of tube bundles (5) being respectively sealed and connected to the two tube sheets (4), characterized in that: The pipeline shell (1) is coaxially provided with a first mixing cylinder (2) and a plurality of second mixing cylinders (3), the first mixing cylinder (2) comprises a first outer cylinder (24), the second mixing cylinder (3) comprises a second outer cylinder (34), and the first outer cylinder (24) and the second outer cylinder (34) are coaxially and rotatably arranged in the pipeline shell (1); The inner rings of the first mixing cylinder (2) and the second mixing cylinder (3) are respectively embeddedly arranged on the periphery of a plurality of tube bundles (5), the first mixing cylinder (2) is arranged below the water inlet of the pipeline shell (1), the periphery of the first outer cylinder (24) is fixedly provided with an inclined plate (25), the inclined plate (25) and the central axis of the first outer cylinder (24) are parallel to each other, the periphery of the second outer cylinder (34) is fixedly provided with a spoiler (35), and the straight line where the spoiler (35) is located and the central axis of the second outer cylinder (34) are non-coplanar.

2. The high-temperature tube heat exchanger according to claim 1, characterized in that: The first mixing cylinder (2) further comprises a first inner cylinder (21), the inner ring of the first inner cylinder (21) is provided with a plurality of first positioning grooves (22) embedded with the outer wall of the tube bundle (5), the first inner cylinder (21) is embeddedly arranged on the periphery of the plurality of tube bundles (5) through the plurality of first positioning grooves (22) of the inner ring, and the first outer cylinder (24) is coaxially and rotatably arranged on the periphery of the first inner cylinder (21).

3. The high-temperature tube heat exchanger of claim 1, wherein: The second mixing cylinder (3) further comprises a second inner cylinder (31), the inner ring of the second inner cylinder (31) is provided with a plurality of second positioning grooves (32) embedded with the outer wall of the tube bundle (5), the second inner cylinder (31) is embeddedly arranged on the periphery of the plurality of tube bundles (5) through the plurality of second positioning grooves (32) of the inner ring, and the second outer cylinder (34) is coaxially and rotatably arranged on the periphery of the second inner cylinder (31).

4. The high-temperature tube heat exchanger of claim 2, wherein: The first inner cylinder (21) is coaxially connected with the first outer cylinder (24) between the outer ring of the first inner cylinder (21) and the inner ring of the first outer cylinder (24).

5. The high-temperature tube heat exchanger of claim 3, wherein: The second inner cylinder (31) is coaxially connected with the second outer cylinder (34) between the outer ring of the second inner cylinder (31) and the inner ring of the second outer cylinder (34).

6. The high-temperature tube heat exchanger of claim 1, wherein: A plurality of baffle plates (6) are arranged on the plurality of tube bundles (5) at equal intervals, and the plurality of second mixing cylinders (3) are arranged between the plurality of baffle plates (6).

7. The high-temperature tube heat exchanger of claim 1, wherein: Z-shaped folding rods (36) are fixedly arranged at both ends of the spoiler (35).

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