Multi-tube pass heat exchange structure of converter

Abstract

The utility model discloses a converter multi -tube -pass heat exchange structure, including the heat preservation shell, the top fixed mounting of heat preservation shell has the counter -flow cover, the bottom fixed mounting of heat preservation shell has the connecting cavity, the bottom of heat preservation shell front is provided with high temperature medium export, the bottom of heat preservation shell side is provided with high temperature medium import, the inside of heat preservation shell is provided with the heat exchange pipe of intercommunication connecting cavity and counter -flow cover, the front of connecting cavity is provided with low temperature medium import, the side of connecting cavity is provided with low temperature medium export, the inside sealed fixed mounting of connecting cavity has the heat -proof baffle, the inside sealed of counter -flow cover is provided with the fairlead, the fixed mounting of heat preservation shell has the partition plate of partition heat exchange pipe. Fluid is through heat exchange pipe bundle according to the prescribed path multiple cross flow, and the degree of turbulent motion increases, and the compact structure is big in unit volume heat transfer area, and total heat transfer coefficient is high, and the floor area is greatly reduced, and the material and space are saved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a multi-pass heat exchange structure for a converter. Background Technology

[0002] A heat exchanger is an energy-saving device that facilitates heat transfer between two or more fluids at different temperatures. It transfers heat from a higher-temperature fluid to a lower-temperature fluid, bringing the fluid temperature to the specified parameters to meet process requirements. It is also a key component for improving energy efficiency. The heat exchanger industry encompasses nearly 30 sectors, including HVAC, pressure vessels, wastewater treatment equipment, chemicals, and petroleum, forming interconnected industrial chains. Indirect heat exchangers separate two fluids at different temperatures within a space partitioned by a wall. Heat exchange occurs through conduction at the wall surface and convection between the fluids. Indirect heat exchangers include shell-and-tube, coaxial, and other types. Indirect heat exchangers are currently the most widely used type. Tube (also known as shell-and-tube or tubular) heat exchangers are the most typical type of indirect heat exchanger, with a long history of industrial application and still dominating the market today. Tubular heat exchangers mainly consist of a shell, tube bundle, tube sheet, and end caps. The shell is mostly circular and contains parallel tube bundles, with both ends of the tube bundles fixed to the tube sheet.

[0003] Existing tubular heat exchangers have low external fluid heat transfer coefficients, short flow times, and insufficient heat utilization, resulting in poor heat exchange efficiency. Furthermore, the heat from the hot fluid is dissipated into the air during the heat exchange process, causing energy waste and affecting the heat exchange effect.

[0004] Therefore, we propose a multi-pass heat exchange structure for the converter. Utility Model Content

[0005] The purpose of this invention is to provide a multi-pass heat exchange structure for a converter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-pass heat exchange structure for a converter, comprising an insulation shell, a counterflow shroud fixedly installed on the top of the insulation shell, a connecting cavity fixedly installed on the bottom of the insulation shell, a high-temperature medium outlet provided at the bottom of the front side of the insulation shell, a high-temperature medium inlet provided at the bottom of the side side of the insulation shell, a heat exchange tube connecting the connecting cavity and the counterflow shroud provided inside the insulation shell, a low-temperature medium inlet provided on the front side of the connecting cavity, a low-temperature medium outlet provided on the side side of the connecting cavity, a heat insulation baffle fixedly installed inside the connecting cavity, a flow guide plate fixedly installed inside the counterflow shroud, and a partition plate separating the heat exchange tubes fixedly installed on the insulation shell.

[0007] Optionally, the insulation shell is a two-layer integrally connected metal shell, and an insulation layer filled inside the metal shell. The insulation layer is made of polystyrene particleboard and rock wool, and the surface of the metal shell is coated with high-temperature resistant and anti-corrosion paint.

[0008] Optionally, a fixed partition is provided at the connection between the heat insulation shell, the connecting cavity, and the counterflow shroud. A through hole is provided in the middle of the fixed partition, and the two ends of the heat exchange tube are respectively sealed and fixedly installed inside the through holes of the two fixed partitions.

[0009] Optionally, the two ends of the partition plate are sealed and fixedly installed with the opposite surfaces of the two fixed partition plates respectively. The partition plate evenly divides the heat exchange tubes into four groups, and the connection between the partition plate and the fixed partition plate is provided with flow guide ports in an alternating manner.

[0010] Optionally, the interior of the counterflow shroud is provided with a flow guide plate, which is flush with the partition plate.

[0011] Optionally, the heat insulation partition separates the low-temperature medium inlet and the low-temperature medium outlet, and the partition and the flow guide guide the high-temperature medium.

[0012] Optionally, the guide plate, partition plate, and heat insulation plate are made of the same material, and the interior of the guide plate, partition plate, and heat insulation plate is filled with heat insulation filler.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This converter features a multi-pass heat exchange structure. Through the inclusion of a partition plate, the low-temperature medium is fed into the connecting cavity separated by the insulation partition plate via the low-temperature medium inlet. It then flows into a set of heat exchange tubes connected to the partition cavity of the insulation partition plate. From there, it flows through a counterflow shroud and guide plates into another set of heat exchange tubes. Finally, it enters the interior of the insulation shell through the high-temperature medium inlet and flows along the partition plate and guide holes. This allows the high-temperature medium to exchange heat with the low-temperature medium flowing in the opposite direction within the heat exchange tubes. This increases the flow path of the medium, improves the heat transfer coefficient of the fluid inside the insulation shell, and enables the fluid to flow through the heat exchange tube bundle multiple times along a predetermined path, increasing turbulence. The structure is compact, with a large heat transfer area per unit volume, a high overall heat transfer coefficient, and a significantly reduced footprint, saving materials and space. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a multi-pass heat exchanger structure for a converter according to the present invention.

[0016] Figure 2 This is a schematic diagram of the insulation shell of a multi-pass heat exchange structure for a converter according to this utility model;

[0017] Figure 3This is a schematic diagram of the partition plate of a multi-pass heat exchanger structure for a converter according to this utility model.

[0018] In the diagram: 1. Insulation shell; 2. Connecting cavity; 3. Counterflow hood; 4. Low-temperature medium inlet; 5. Low-temperature medium outlet; 6. High-temperature medium outlet; 7. High-temperature medium inlet; 8. Fixed partition; 9. Heat exchange tube; 10. Divider plate; 11. Insulation partition; 12. Flow guide plate; 13. Flow guide port; 14. Through hole Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 3 This utility model provides a multi-pass heat exchange structure for a converter, including an insulation shell 1, a counterflow shroud 3 fixedly installed on the top of the insulation shell 1, a connecting cavity 2 fixedly installed on the bottom of the insulation shell 1, a high-temperature medium outlet 6 provided at the bottom of the front side of the insulation shell 1, a high-temperature medium inlet 7 provided at the bottom of the side side of the insulation shell 1, a heat exchange tube 9 connected to the connecting cavity 2 and the counterflow shroud 3 provided inside the insulation shell 1, a low-temperature medium inlet 4 provided on the front side of the connecting cavity 2, a low-temperature medium outlet 5 provided on the side side of the connecting cavity 2, a heat insulation baffle 11 fixedly installed inside the connecting cavity 2, a flow guide plate 12 fixedly installed inside the counterflow shroud 3, and a partition plate 10 fixedly installed on the insulation shell 1 to separate the heat exchange tubes 9. The low-temperature medium is fed into the connecting cavity 2 after being divided by the heat insulation partition 11 through the low-temperature medium inlet 4, and then into a set of heat exchange tubes 9 connected to the partition cavity of the heat insulation partition 11. It then flows into another set of heat exchange tubes 9 through the counterflow shroud 3 and the guide plate 12. It enters the interior of the insulation shell 1 through the high-temperature medium inlet 7 and flows along the partition plate 10 and the guide hole, so that the high-temperature medium and the low-temperature medium flowing in opposite directions in the heat exchange tubes 9 can exchange heat. This increases the flow tube length of the medium fluid, improves the heat transfer coefficient of the fluid in the insulation shell 1, and makes the fluid flow through the heat exchange tube bundle 9 multiple times in a specified path. The turbulence is increased, the structure is compact, the heat transfer area per unit volume is large, the overall heat transfer coefficient is high, the floor space is greatly reduced, and materials and space are saved.

[0021] The insulation shell 1 consists of two integrally connected metal shells and an insulation layer filled inside the metal shell. The insulation layer is made of polystyrene particleboard and rock wool. The surface of the metal shell of the insulation shell 1 is coated with high-temperature resistant and anti-corrosion paint.

[0022] A fixed partition 8 is provided at the connection between the heat insulation shell 1, the connecting cavity 2, and the counterflow shroud 3. A through hole 14 is provided in the middle of the fixed partition 8. The two ends of the heat exchange tube 9 are respectively sealed and fixedly installed inside the through holes 14 of the two fixed partitions 8.

[0023] The two ends of the partition plate 10 are sealed and fixed to the opposite surfaces of the two fixed partition plates 8 respectively. The partition plate 10 divides the heat exchange tube 9 into four groups evenly. The connection between the partition plate 10 and the fixed partition plate 8 is provided with flow guide ports 13 in a staggered manner.

[0024] The inside of the counterflow shroud 3 is provided with a flow guide plate 12, which is flush with the partition plate 10.

[0025] The heat insulation partition 11 separates the low-temperature medium inlet 4 and the low-temperature medium outlet 5, while the partition plate 10 and the flow guide 13 guide the high-temperature medium.

[0026] The guide plate 12, the partition plate 10 and the heat insulation plate 11 are made of the same material, and the interior of the guide plate 12, the partition plate 10 and the heat insulation plate 11 is filled with heat insulation filler.

[0027] Working principle:

[0028] The low-temperature medium is fed into the connecting cavity 2 after being divided by the heat insulation partition 11 through the low-temperature medium inlet 4, and then into a set of heat exchange tubes 9 connected to the partition cavity of the heat insulation partition 11. It then flows into another set of heat exchange tubes 9 through the counterflow shroud 3 and the guide plate 12. It enters the interior of the insulation shell 1 through the high-temperature medium inlet 7 and flows along the partition plate 10 and the guide hole, so that the high-temperature medium and the low-temperature medium flowing in opposite directions in the heat exchange tubes 9 can exchange heat, which increases the flow tube length of the medium fluid and improves the heat transfer coefficient of the fluid in the insulation shell 1.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-pass heat exchange structure for a converter, comprising an insulation shell (1), characterized in that, The top of the insulation shell (1) is fixedly installed with a counterflow hood (3), the bottom of the insulation shell (1) is fixedly installed with a connecting cavity (2), the bottom of the front of the insulation shell (1) is provided with a high temperature medium outlet (6), the bottom of the side of the insulation shell (1) is provided with a high temperature medium inlet (7), the inside of the insulation shell (1) is provided with a heat exchange tube (9) connecting the connecting cavity (2) and the counterflow hood (3), the front of the connecting cavity (2) is provided with a low temperature medium inlet (4), the side of the connecting cavity (2) is provided with a low temperature medium outlet (5), the inside of the connecting cavity (2) is sealed and fixedly installed with a heat insulation partition (11), the inside of the counterflow hood (3) is sealed and installed with a flow guide plate (12), and the insulation shell (1) is fixedly installed with a partition plate (10) separating the heat exchange tube (9).

2. The converter multi-pass heat exchange structure according to claim 1, characterized in that, The insulation shell (1) is a two-layer integrally connected metal shell and an insulation layer filled inside the metal shell. The insulation layer is made of polystyrene particleboard and rock wool. The surface of the metal shell of the insulation shell (1) is coated with high-temperature resistant and anti-corrosion paint.

3. The multi-pass heat exchange structure for a converter according to claim 1, characterized in that, A fixed partition (8) is provided at the connection between the heat insulation shell (1), the connecting cavity (2), and the counterflow shroud (3). A through hole (14) is provided in the middle of the fixed partition (8). The two ends of the heat exchange tube (9) are respectively sealed and fixed inside the through holes (14) of the two fixed partitions (8).

4. The multi-pass heat exchange structure for a converter according to claim 3, characterized in that, The two ends of the partition plate (10) are sealed and fixedly installed with the opposite surfaces of the two fixed partition plates (8). The partition plate (10) evenly divides the heat exchange tube (9) into four groups. The connection between the partition plate (10) and the fixed partition plate (8) is provided with flow guides (13) in an alternating manner.

5. The converter multi-pass heat exchange structure according to claim 1, characterized in that, The inside of the anti-flow shield (3) is provided with a flow guide plate (12), which is flush with the partition plate (10).

6. The multi-pass heat exchange structure for a converter according to claim 1, characterized in that, The heat insulation partition (11) separates the low-temperature medium inlet (4) and the low-temperature medium outlet (5), and the partition (10) and the flow guide (13) guide the high-temperature medium.

7. A multi-pass heat exchanger structure for a converter according to claim 5, characterized in that, The guide plate (12), the partition plate (10) and the heat insulation partition plate (11) are made of the same material, and the interior of the guide plate (12), the partition plate (10) and the heat insulation partition plate (11) is filled with heat insulation filler.

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