Tube bundle of light tube heat exchanger

Abstract

The utility model relates to a light tube heat exchanger tube bundle which comprises a box body, first heat exchange tubes and second heat exchange tubes, a plurality of heat exchange cavities are formed in the box body, the first heat exchange tubes are evenly divided into two rows, one row of first heat exchange tubes are installed on the top face of the box body, and the other row of first heat exchange tubes are installed on the bottom faces of the heat exchange cavities. The axial direction of the first heat exchange pipes is consistent with the length direction of the heat exchange cavities, the second heat exchange pipes are installed between the upper row of heat exchange pipes and the lower row of heat exchange pipes, and the upper row of heat exchange pipes and the lower row of heat exchange pipes are communicated through the second heat exchange pipes. The first heat exchange pipes and the second heat exchange pipes are arranged in the heat exchange cavity to form a criss-cross heat exchange network, the heat exchange cavity is filled with the heat exchange network, the heat exchange space is effectively utilized, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of heat exchange equipment, in particular to a tube bundle of a bare tube heat exchanger. Background Art

[0002] Heat exchange tube bundles refer to a pipe structure used to transfer heat in a heat exchanger, which can cool or heat materials through heat exchange. The material of the tube bundle is usually metal materials, such as stainless steel, copper, aluminum, etc. Due to its good heat transfer performance, heat exchange can be completed in a short time. Heat exchange tube bundles are widely used in various industrial fields, such as petroleum, chemical, electric power and pharmaceutical, and play a key role in equipment.

[0003] At present, CN114353558A discloses a new type of heat exchanger, including a U-shaped tube, a tube sheet assembly and a tube box. Four tube boxes are provided and evenly distributed on the top of the tube sheet assembly. Multiple U-shaped tubes are arranged in a staggered manner to form a U-shaped tube bundle. Two adjacent tube boxes on the left and right are connected by a U-shaped tube bundle. Two U-shaped tube bundles are provided and both ends of the U-shaped tube bundles respectively penetrate the tube sheet assembly and extend into the inner cavity of the two tube boxes. The lower ends of the same side of the two U-shaped tube bundles are connected and installed with the same support plate assembly.

[0004] However, there will be a large gap in the center of the tube bundle. In the limited installation space, the middle air flows directly through the tube box, and the air flowing in the middle space does not contact the U-shaped tube bundle for heat exchange. In addition, the curvature of the curved part of the U-shaped tube is different, resulting in uneven material distribution, affecting the heat exchange efficiency.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] Aiming at the deficiencies of the prior art, the utility model discloses a tube bundle of a bare tube heat exchanger.

[0007] The technical solution adopted by the utility model is as follows:

[0008] A tube bundle of a bare tube heat exchanger comprises a box body, a first heat exchange tube and a second heat exchange tube. The box body is provided with a plurality of heat exchange cavities. The first heat exchange tube is evenly divided into two rows. One row of the first heat exchange tube is installed on the top surface of the box body, and the other row of the first heat exchange tube is installed on the bottom surface of the heat exchange cavity. The axial direction of the first heat exchange tube is consistent with the length direction of the heat exchange cavity. The second heat exchange tube is installed between the upper and lower rows of heat exchange tubes and connects the upper and lower rows of heat exchange tubes.

[0009] Furthermore, each of the heat exchange tubes 1 is connected to two of the heat exchange tubes 2, and the distance between the two heat exchange tubes 2 is smaller than the diameter of the heat exchange tube 1.

[0010] Furthermore, the end of the second heat exchange tube is configured as a broken line.

[0011] Furthermore, the heat exchange tube 1 at the bottom is connected with a material distribution pipe, and the material distribution pipe extends downward and extends out of the box.

[0012] Furthermore, the end of the distribution pipe is connected to a feed pipe.

[0013] Furthermore, the upper heat exchange tube is connected to an exhaust pipe.

[0014] Furthermore, a connecting pipe is provided on the top of the exhaust pipe, and the diameter of the connecting pipe is smaller than the diameter of the exhaust pipe.

[0015] Furthermore, an exhaust main pipe is horizontally placed above the exhaust pipe, and the exhaust pipe is connected to the exhaust main pipe through a connecting pipe.

[0016] Furthermore, the exhaust main pipe is provided with a plurality of exhaust interfaces.

[0017] Furthermore, a tube clamp is provided between the two heat exchange tubes.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. A plurality of independent heat exchange chambers are arranged in the box body, and heat exchange tubes 1 and 2 are arranged in the heat exchange chambers to form a crisscross heat exchange network, filling the heat exchange chambers, effectively utilizing the heat exchange space, and improving the heat exchange efficiency.

[0020] 2. Each heat exchange tube 1 is connected to two heat exchange tubes 2 to form a branch structure. The hot fluid continues to flow upward through the heat exchange tube 1 below and is divided into two streams. The hot fluid originally in the core of the heat exchange tube 1 is far away from the heat exchange tube 1, and it takes time to transfer heat, resulting in its temperature not being able to drop quickly. It is then diverted to evenly disperse the heat body, thereby providing more heat exchange opportunities.

[0021] 3. The hot fluid is injected into the feed pipe, then diverted to the distribution pipe, and finally flows into each heat exchange tube. The hot fluid is evenly injected into each heat exchange tube to give the hot fluid a chance to dissipate heat.

[0022] 4. During the heat exchange process, as the liquid evaporates and the gas in the dissolved hot fluid overflows, the gas rises and is discharged from the heat exchange tube 1 through the exhaust pipe. The gas is discharged after gathering in the exhaust main pipe, thereby avoiding the situation where excessive gas accumulates in the heat exchange tubes 1 and 2 and the internal pressure is too high.

[0023] 5. The tube clamp connects multiple heat exchange tubes to prevent the heat exchange tubes from shaking and improve stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the tube bundle of the bare tube heat exchanger.

[0025] In the figure: 1. Box body; 11. Heat exchange chamber; 2. Heat exchange tube 1; 21. Feed pipe; 22. Distribution pipe; 23. Exhaust pipe; 24. Connecting pipe; 3. Heat exchange tube 2; 31. Pipe clamp; 4. Exhaust main pipe; 41. Exhaust interface. DETAILED DESCRIPTION

[0026] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0027] In order to make the purpose, technical scheme and advantages of the utility model clearer, the device proposed in the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0028] Example:

[0029] A tube bundle of a bare tube heat exchanger, such as Figure 1 As shown, it includes a box body 1, a heat exchange tube 1 2 and a heat exchange tube 2 3, and the heat exchange tube 1 2 and the heat exchange tube 2 3 form a pipeline array installed in the box body 1. When working, the hot fluid flows through the heat exchange tube 1 2 and the heat exchange tube 2 3, and the cold air blows through the inside of the box body 1 to complete the heat exchange.

[0030] like Figure 1 As shown, a plurality of heat exchange chambers 11 are arranged in the box body 1, and the heat exchange chambers 11 are evenly arranged along the width direction of the box body 1. When the device is working, air flows along the heat exchange chambers 11.

[0031] like Figure 1 As shown, the heat exchange tubes 2 are evenly divided into two rows, one row of heat exchange tubes 2 is installed on the top surface of the box body 1, and the other row of heat exchange tubes 2 is installed on the bottom surface of the heat exchange cavity 11, and the upper and lower heat exchange tubes 2 are arranged one by one.

[0032] The lower heat exchange tube 1-2 is connected with a distribution pipe 22, which extends downward and out of the box 1, and the end of the distribution pipe 22 is connected with a feed pipe 21, which is a T-shaped pipe and connected to an external heat source pipe. The hot fluid is first injected into the feed pipe 21, and then divided by the distribution pipe 22 and injected into each heat exchange tube 1-2.

[0033] The heat exchange tube 2 3 is installed between the upper and lower rows of heat exchange tubes, and the upper and lower rows of heat exchange tubes are connected. Each heat exchange tube 1 2 is connected to two heat exchange tubes 2 3, and the end of the heat exchange tube 2 3 is in a broken line shape. The distance between the two heat exchange tubes 2 3 is smaller than the diameter of the heat exchange tube 1 2. Thus, the heat exchange tube 1 2 and the heat exchange tube 2 3 form a crisscross array, fill the heat exchange cavity 11, increase the heat exchange area, and improve the heat exchange efficiency.

[0034] A tube clamp 31 is provided between the heat exchange tubes 2 3 to connect the adjacent heat exchange tubes 2 3 into a whole, which plays a restraining role, prevents the heat exchange tubes 2 3 from shaking easily, and improves stability.

[0035] The upper heat exchange tube 1 2 is connected to an exhaust pipe 23, and the evaporated and overflowed gas in the hot fluid rises and is discharged into the exhaust pipe 23, so as to avoid a large amount of gas from accumulating in the heat exchange tube 1 2 and the heat exchange tube 2 3 and reduce the internal pressure. A connecting pipe 24 is arranged on the top of the exhaust pipe 23, and the diameter of the connecting pipe 24 is smaller than the diameter of the exhaust pipe 23. An exhaust main pipe 4 is horizontally arranged above the exhaust pipe 23, and the exhaust pipe 23 is connected to the exhaust main pipe 4 through the connecting pipe 24. The exhaust main pipe 4 is provided with a plurality of exhaust interfaces 41. The gas in the exhaust pipe 23 finally flows into the exhaust main pipe 4, and the exhaust interface 41 is connected to the external exhaust pipe 23 to discharge the gas from the equipment.

[0036] Specific working process:

[0037] The feed pipe 21 is connected to the external heat source pipe, and the hot fluid is injected into the feed pipe 21, and then input into each heat exchange tube 1 2 below through the distribution pipe 22, and then part of the hot fluid flows along the heat exchange tube 1 2, and part of the hot fluid rises and flows into the heat exchange tube 2 3, and then injected into the heat pipe 1 above, and flows along the heat exchange tube 1 2. At the same time, cold air blows through each heat exchange cavity 11, fully contacts the surface of the heat exchange tube 1 2 and the heat exchange tube 2 3, and completes the work of heat exchange.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A tube bundle of a bare tube heat exchanger, characterized in that: It includes a box body, a heat exchange tube 1 and a heat exchange tube 2. The box body is provided with a plurality of heat exchange chambers. The heat exchange tube 1 is evenly divided into two rows. One row of the heat exchange tube 1 is installed on the top surface of the box body, and the other row of the heat exchange tube 1 is installed on the bottom surface of the heat exchange chamber. The axial direction of the heat exchange tube 1 is consistent with the length direction of the heat exchange chamber. The heat exchange tube 2 is installed between the upper and lower rows of heat exchange tubes and connects the upper and lower rows of heat exchange tubes.

2. The tube bundle of a bare tube heat exchanger according to claim 1, characterized in that: Each of the heat exchange tubes 1 is connected to two of the heat exchange tubes 2, and the distance between the two heat exchange tubes 2 is smaller than the diameter of the heat exchange tube 1.

3. The tube bundle of a bare tube heat exchanger according to claim 2, characterized in that: The end of the second heat exchange tube is configured in a broken line shape.

4. The tube bundle of a bare tube heat exchanger according to claim 1, characterized in that: The heat exchange tube 1 at the bottom is connected with a material distribution pipe, and the material distribution pipe extends downward and extends out of the box body.

5. The tube bundle of a bare tube heat exchanger according to claim 4, characterized in that: The end of the material distribution pipe is connected with a feeding pipe.

6. The tube bundle of a bare tube heat exchanger according to claim 1, characterized in that: The upper heat exchange tube 1 is connected with an exhaust pipe.

7. The tube bundle of a bare tube heat exchanger according to claim 6, characterized in that: A connecting pipe is arranged on the top of the exhaust pipe, and the diameter of the connecting pipe is smaller than the diameter of the exhaust pipe.

8. The tube bundle of a bare tube heat exchanger according to claim 7, characterized in that: An exhaust main pipe is horizontally arranged above the exhaust pipe, and the exhaust pipe is connected to the exhaust main pipe through a connecting pipe.

9. The tube bundle of a bare tube heat exchanger according to claim 8, characterized in that: The exhaust main pipe is provided with a plurality of exhaust interfaces.

10. The tube bundle of a bare tube heat exchanger according to claim 1, characterized in that: A tube clamp is arranged between the two heat exchange tubes.

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