Distribution device of coiled tube type heat exchanger

Abstract

The utility model discloses a coiled tube type heat exchanger distribution device, which relates to the field of coiled tube type heat exchanger distribution devices and comprises a main body, a plurality of groups of distribution rings are mounted on the inner side of the main body, and fluid is guided into a heat exchange tube bundle through the distribution rings. The fluid is distributed uniformly through a plurality of openings onto the cross-section of the tube bundle, and then the distribution tubes further distribute the fluid into the heat exchange tube bundle, typically below the distribution rings, and having a plurality of holes or slots to direct the fluid to each heat exchange tube, while baffle rods are mounted on the distribution tubes and force the fluid to change direction. And the turbulent flow is beneficial to breaking a fluid boundary layer and promoting fluid mixing, so that the heat exchange efficiency is improved. Through cooperation of a plurality of assemblies, the device can quickly and uniformly distribute fluid to the whole cross section of the heat exchange tube bundle, so that the heat exchange efficiency is improved, and thermal stress is prevented.

Description

Technical Field

[0001] The utility model relates to the field of coiled tube heat exchanger distribution devices, in particular to a coiled tube heat exchanger distribution device. Background Art

[0002] The coiled heat exchanger is a common heat exchange device used to transfer heat between fluids. The distribution device is a device installed on the shell side of the heat exchanger. Its function is to evenly distribute the fluid to the entire cross-section of the heat exchange tube bundle. In recent years, with the development of computational fluid dynamics (CFD), the design of the distribution device has become more optimized. The CFD model can simulate the flow pattern of the fluid in the heat exchanger to identify dead corners and low flow areas. This enables engineers to design a distribution device with optimized shape and size to maximize heat transfer efficiency and prevent fouling accumulation.

[0003] Some existing devices may not be able to quickly and evenly distribute the fluid to the entire cross-section of the heat exchange tube bundle, resulting in excessively high or low flow rates on some tubes. This will reduce heat exchange efficiency and may cause thermal stress. Utility Model Content

[0004] In order to solve the above technical problems, a coiled-tube heat exchanger distribution device is provided. This technical solution solves the problems of low efficiency and uneven distribution in the heat exchange process of the existing equipment mentioned in the above background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a distribution device of a coiled heat exchanger, comprising a main body, a plurality of distribution rings are installed on the inner side of the main body, a mounting piece is fixedly installed on the inner middle part of the distribution ring, a plurality of first mounting grooves are opened on the outer surface of one end of the mounting piece, a first distribution pipe is installed inside the first mounting groove, a second distribution pipe is fixedly installed on the lower surface of the other end of the first mounting groove, and deflector rods are installed on both sides of the left and right sides of the mounting piece.

[0006] Preferably, mounting rods are further installed on the left and right sides of the mounting member, the mounting rods are arranged on both sides of the deflector rod, and a second mounting groove is arranged between the deflector rod and the mounting rod.

[0007] Preferably, a plurality of groups of heat exchange tubes are installed inside the second installation groove, and the axial surfaces of the heat exchange tubes are connected to the second baffle.

[0008] Preferably, the front end of the distribution ring is set as the second distribution ring, the rear end of the distribution ring is set as the first distribution ring, and the outer surfaces of the first distribution ring and the second distribution ring are installed by bolts passing through.

[0009] Preferably, a flow disturbance ring is provided at the bottom of the first distribution ring and the second distribution ring, a plurality of groups of vortex generators are provided on the inner surface of the flow disturbance ring, and a first baffle is installed on the inner surface of the flow disturbance ring at one side of the vortex generator.

[0010] Preferably, a plurality of groups of through holes are provided on the outer surface of the second baffle plate, a limiting block is provided on the outer surface of one side of the second baffle plate, and a heat exchange tube is connected to the inner side of the limiting block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In a coil-wound heat exchanger distribution device proposed in this scheme, the fluid is guided into the heat exchange tube bundle through a distribution ring and evenly distributed to the cross section of the tube bundle through multiple openings. Then the distribution pipes further distribute the fluid into the heat exchange tube bundle. They are usually located below the distribution ring and have multiple holes or grooves to guide the fluid to each heat exchange tube. At the same time, the deflector rods are installed on the distribution pipes and force the fluid to change direction, thereby generating turbulence. The turbulence helps to break the fluid boundary layer and promote fluid mixing, thereby improving the heat exchange efficiency. Through the cooperation of the above multiple components, the device can quickly and evenly distribute the fluid to the entire cross section of the heat exchange tube bundle, thereby improving the heat exchange efficiency and preventing thermal stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the distribution ring of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the flow disturbance component of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the limit assembly of the utility model.

[0017] The numbers in the figure are:

[0018] 1. Main body; 2. Distribution ring; 3. Heat exchange tube; 4. Bolt; 5. Mounting piece; 6. First mounting groove; 7. First distribution tube; 8. Second distribution tube; 9. Second mounting groove; 10. Deflector rod; 11. Mounting rod; 12. Flow disturbance ring; 13. Vortex generator; 14. First baffle; 15. Second baffle; 16. Through hole; 17. Limit block; 21. First distribution ring; 22. Second distribution ring. DETAILED DESCRIPTION

[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0020] Reference Figure 1-4 As shown, a distribution device of a coiled heat exchanger is provided, comprising a main body 1, a plurality of distribution rings 2 are installed on the inner side of the main body 1, the distribution rings 2 guide the fluid into the heat exchange tubes 3, and distribute the fluid evenly to the cross section of the tube bundle through a plurality of openings, a mounting member 5 is fixedly installed on the inner middle part of the distribution ring 2, a plurality of first mounting grooves 6 are provided on the outer surface of one end of the mounting member 5, a first distribution pipe 7 is installed inside the first mounting groove 6, the first distribution pipe 7 further distributes the fluid into the heat exchange tubes 3, and has a plurality of groups to evenly guide the fluid to each heat exchange tube 3, a second distribution pipe 8 assists the first distribution pipe 7, a second distribution pipe 8 is fixedly installed on the lower surface of the other end of the first mounting groove 6, and a deflector rod 10 is installed on both sides of the left and right sides of the mounting member 5.

[0021] Furthermore, mounting rods 11 are installed on the left and right sides of the mounting member 5. The mounting rods 11 are arranged on both sides of the deflector rod 10. A second mounting groove 9 is arranged between the deflector rod 10 and the mounting rod 11. The deflector rod 10 is installed on the mounting member 5 and forces the fluid to change direction, thereby generating turbulence. This turbulent effect helps to enhance the heat transfer between the fluid and the pipe wall, improve the heat exchange efficiency, and effectively reduce the thermal resistance in the heat conduction process, thereby further optimizing the performance of the heat exchanger.

[0022] Furthermore, a plurality of groups of heat exchange tubes 3 are installed inside the second installation groove 9. The axial surface of the heat exchange tube 3 is connected to the second baffle 15. The heat exchange tube 3 allows fluid to flow inside and outside the tube to perform heat exchange with another fluid.

[0023] The front end of the distribution ring 2 is set as the second distribution ring 22 , the rear end of the distribution ring 2 is set as the first distribution ring 21 , and the outer surfaces of the first distribution ring 21 and the second distribution ring 22 are penetrated and installed by bolts 4 .

[0024] Furthermore, a flow disturbance ring 12 is provided at the bottom of the first distribution ring 21 and the second distribution ring 22. The design of the flow disturbance ring 12 and the vortex generator 13 is conducive to the mixing and convective heat transfer of the fluid, and improves the heat exchange effect between the fluids. By introducing turbulence, the heat transfer resistance in the heat transfer process can be reduced. The first baffle 14 can adjust the flow direction to ensure that the fluid flows evenly inside the heat exchanger. Since the heat exchange efficiency is improved and the resistance is reduced, this design helps to reduce the energy consumption of the system and meets the requirements of energy conservation and environmental protection. Several groups of vortex generators 13 are provided on the inner surface of the flow disturbance ring 12, and the first baffle 14 is installed on the inner surface of the flow disturbance ring 12 on one side of the vortex generator 13.

[0025] Furthermore, a plurality of groups of through holes 16 are provided on the outer surface of the second baffle 15, a limit block 17 is provided on the outer surface of one side of the second baffle 15, and the inner side of the limit block 17 is connected to the heat exchange tube 3. The limit block 17 can firmly fix the heat exchange tube 3 in an appropriate position to prevent them from vibrating when the fluid flows. The vibration will cause fatigue and damage to the heat exchange tube 3, thereby reducing the life and efficiency of the heat exchanger.

[0026] Working principle and implementation method: The fluid will enter the heat exchanger from the fluid inlet and be evenly distributed to the heat exchange tube 3 by the distribution ring 2. The fluid will flow through the heat exchange tube 3 and exchange heat with another fluid. The deflector rod 10 will force the fluid to change direction, thereby generating turbulence. Turbulence helps to break the fluid boundary layer and promote fluid mixing, thereby improving heat exchange efficiency. The flow disturbance ring 12 and the vortex generator 13 will generate turbulence, further promoting fluid mixing and improving heat exchange efficiency. The first baffle 14 will force the fluid to flow through a specific path, which helps to ensure that all heat exchange tubes 3 can obtain a uniform flow rate and prevent fluid short circuit. The limit block 17 will prevent the heat exchange tube 3 from vibrating when the fluid flows, which helps to maintain the distance between the heat exchange tubes 3 and ensure that the fluid can flow evenly through the tube bundle. The fluid flows over the surface of the heat exchange tube 3 and exchanges heat with the heat exchange tube 3 to achieve convective heat transfer. Turbulence helps to break the fluid boundary layer and promote fluid mixing, thereby improving convective heat transfer efficiency and achieving turbulent heat transfer. The device adopts two heat exchange mechanisms to effectively solve the problems of low efficiency and uneven distribution in the heat exchange process of existing equipment.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A coiled tube heat exchanger distribution device, comprising a main body (1), characterized in that: A plurality of distribution rings (2) are installed on the inner side of the main body (1), a mounting member (5) is fixedly installed on the inner middle part of the distribution ring (2), a plurality of first mounting grooves (6) are provided on the outer surface of one end of the mounting member (5), a first distribution pipe (7) is installed inside the first mounting groove (6), a second distribution pipe (8) is fixedly installed on the lower surface of the other end of the first mounting groove (6), and a deflector rod (10) is installed on both the left and right sides of the mounting member (5).

2. A coiled heat exchanger distribution device according to claim 1, characterized in that: Mounting rods (11) are also mounted on the left and right sides of the mounting member (5); the mounting rods (11) are arranged on both sides of the deflector rod (10); and a second mounting groove (9) is arranged between the deflector rod (10) and the mounting rod (11).

3. A coiled heat exchanger distribution device according to claim 1, characterized in that: A plurality of groups of heat exchange tubes (3) are installed on the inner side of the second installation groove (9), and the axial surfaces of the heat exchange tubes (3) are connected to the second baffle (15).

4. A coiled heat exchanger distribution device according to claim 1, characterized in that: The front end of the distribution ring (2) is provided as a second distribution ring (22), the rear end of the distribution ring (2) is provided as a first distribution ring (21), and the outer surfaces of the first distribution ring (21) and the second distribution ring (22) are penetrated and installed by bolts (4).

5. A coiled heat exchanger distribution device according to claim 4, characterized in that: A flow disturbance ring (12) is provided at the bottom of the first distribution ring (21) and the second distribution ring (22); a plurality of groups of vortex generators (13) are provided on the inner surface of the flow disturbance ring (12); and a first baffle (14) is installed on the inner surface of the flow disturbance ring (12) at one side of the vortex generator (13).

6. A coiled heat exchanger distribution device according to claim 3, characterized in that: The outer surface of the second baffle (15) is provided with a plurality of groups of through holes (16), and a limiting block (17) is provided on one side of the outer surface of the second baffle (15), and the inner side of the limiting block (17) is connected to a heat exchange tube (3).

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