Shunting area structure of plate heat exchanger

Abstract

The utility model discloses a plate heat exchanger shunting area structure, which belongs to the field of plate heat exchangers and comprises a plurality of medium shunting components, the medium shunting components are fixedly mounted in a shunting area on a plate structure, and the medium shunting components are uniformly distributed around medium through holes formed in the plate structure at the same time. Each medium distribution assembly is composed of a fixed circular plate, a fixed flow guide rod, a mounting base plate, a fixed bolt, a movable flow guide rod and a mounting connecting plate, the multiple medium distribution assemblies are arranged in the distribution area close to the medium through hole, and the movable flow guide rods on the medium distribution assemblies can be rotationally adjusted with the fixed bolts as axes; the width of the channel in the flow dividing area close to the medium through hole can be narrowed, so that the flow resistance of the medium in the area is large, the width of the channel in the flow dividing area far away from the medium through hole is widened, the flow resistance of the medium in the area is small, and finally the medium can be distributed more evenly in the flow dividing area.

Description

Technical Field

[0001] This utility model relates to the field of plate heat exchangers, and in particular to a flow distribution zone structure for a plate heat exchanger. Background Art

[0002] A plate heat exchanger is a highly efficient and multifunctional heat exchange device, composed of a series of metal plates stacked with specific corrugated shapes. These metal plates form thin rectangular channels, allowing different fluids to exchange heat through these channels. As an ideal device for liquid-liquid and liquid-vapor heat exchange, plate heat exchangers are widely used in various industries such as chemical, oil and gas, food and beverage, pharmaceutical, and medical equipment. They can be used for various processes such as cooling, heating, concentration, and evaporation, playing a vital role in improving production efficiency and reducing energy consumption. The flow distribution zone of a plate heat exchanger is not a specific component, but rather a specific area on the heat exchanger plates. In a plate heat exchanger, the plates are the core heat transfer components, and their surfaces are usually designed with herringbone corrugations or other shapes to enhance heat exchange efficiency. The inlet flow distribution zone of the plate is the area designed with streamlined guide grooves. The function of this area is to reduce the difference in flow resistance between different flow channels, allowing the fluid to be evenly distributed in the plate heat exchange area. Specifically, when hot and cold media flow through their respective channels on adjacent plates for heat exchange, the flow distribution zone ensures that the fluid is evenly distributed at the inlet, thus avoiding the drawbacks of reduced heat exchange efficiency, pitting, and scaling caused by uneven flow distribution and dead zones. Therefore, although the flow distribution zone is not an independent component, it plays a crucial role in the design and operation of plate heat exchangers. Existing patent application CN202121143757.8 proposes a plate heat exchanger plate with flow distribution blocks that can improve the uniformity of medium distribution to some extent. However, because the channel widths between the flow distribution blocks are the same and cannot be adjusted, the medium flowing out of the inlet is difficult to distribute evenly. A larger amount of medium flows towards the flow distribution zone closer to the inlet, while only a small amount flows towards the flow distribution zone farther away. Therefore, improvements are needed. Utility Model Content

[0003] The main objective of this invention is to provide a flow distribution zone structure for a plate heat exchanger, which can effectively solve the problems in the background art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A plate heat exchanger flow distribution zone structure includes a medium flow distribution assembly. Several medium flow distribution assemblies are fixedly installed within the flow distribution zone on the plate structure. These assemblies are evenly distributed around medium through-holes opened on the plate structure. Each medium flow distribution assembly consists of a fixed circular plate, fixed guide rods, mounting base plates, fixing bolts, movable guide rods, and mounting connecting plates. Two fixed guide rods are symmetrically fixed to the outer wall of the fixed circular plate. Two mounting base plates are respectively fixed to one end of two fixed guide rods. Two fixing bolts are respectively installed on two mounting base plates. Two mounting connecting plates are each installed on the inner side of two mounting base plates via fixing bolts. Two movable guide rods are respectively fixed to one end of two mounting connecting plates.

[0006] Preferably, the diversion area on the plate structure is provided with herringbone-shaped corrugations.

[0007] Preferably, the fixed circular plate on the medium diversion assembly is fixedly mounted on the plate structure.

[0008] Preferably, the outer end of the mounting base plate on the medium diversion assembly is provided with a bolt storage groove, and the inner end of the mounting base plate is provided with a threaded hole, the threaded hole and the bolt storage groove being interconnected.

[0009] Preferably, the outer end of the mounting connection plate on the medium diversion assembly is provided with a fixing blind hole.

[0010] Preferably, the fixing bolts on the medium diversion assembly are installed in the bolt receiving grooves and threaded holes opened on the mounting base plate, and the fixing bolts also abut against the fixing blind holes opened at the outer end of the mounting connection plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By setting several media distribution components in the distribution zone near the media through hole, and adjusting the movable guide rods on the media distribution components by rotating around the fixed bolts, the channel width between two adjacent media distribution components can be adjusted. This allows the channel width in the distribution zone near the media through hole to be narrowed, resulting in greater flow resistance for the media in that area, and the channel width in the distribution zone away from the media through hole to be widened, resulting in less flow resistance for the media in that area. Ultimately, this allows the media to be distributed more evenly in the distribution zone, thereby improving the heat exchange efficiency of the media. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 For the present utility model Figure 1 A magnified view of point A;

[0015] Figure 3 This is a schematic diagram of the structure of the media splitter assembly of this utility model from one perspective after disassembly;

[0016] Figure 4 This is a structural schematic diagram of the media splitting component of this utility model from another perspective after disassembly.

[0017] In the diagram: 1. Plate structure; 2. Diversion zone; 3. Medium diversion assembly; 4. Herringbone corrugation; 5. Medium through hole; 6. Fixed circular plate; 7. Fixed guide rod; 8. Mounting base plate; 9. Bolt storage groove; 10. Threaded hole; 11. Fixing bolt; 12. Movable guide rod; 13. Mounting connecting plate; 14. Fixed blind hole. DETAILED DESCRIPTION

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a plate heat exchanger flow distribution structure includes a medium flow distribution assembly 3. Several medium flow distribution assemblies 3 are fixedly installed within a flow distribution area 2 on a plate structure 1. These assemblies 3 are evenly distributed around medium through holes 5 opened on the plate structure 1. Each medium flow distribution assembly 3 consists of a fixed circular plate 6, fixed guide rods 7, mounting base plates 8, fixing bolts 11, movable guide rods 12, and mounting connecting plates 13. Two fixed guide rods 7 are symmetrically fixedly installed on the outer wall of the fixed circular plate 6. Two mounting base plates 8 are respectively fixedly installed at one end of two fixed guide rods 7. Two fixing bolts 11 are respectively installed on two mounting base plates 8. Two mounting connecting plates 13 are respectively installed on the inner side of two mounting base plates 8 via fixing bolts 11. Two movable guide rods 12 are respectively fixedly installed at one end of two mounting connecting plates 13. The plate structure... A herringbone corrugation 4 is provided in the flow distribution zone 2 of the structure 1. During use, the medium can flow into the channel between two adjacent medium distribution components 3 through the medium through hole 5, and then flow to the herringbone corrugation 4 in the flow distribution zone 2 through the channel between the two adjacent medium distribution components 3. By setting several medium distribution components 3 in the flow distribution zone 2 near the medium through hole 5, and the movable guide rod 12 on the medium distribution component 3 can be rotated and adjusted with the fixed bolt 11 as the axis, the channel width between two adjacent medium distribution components 3 can be adjusted. In this way, the channel width in the flow distribution zone 2 near the medium through hole 5 can be narrowed, so that the flow resistance of the medium in this area is greater, and the channel width in the flow distribution zone 2 far away from the medium through hole 5 can be widened, so that the flow resistance of the medium in this area is smaller. Finally, the medium can be more evenly distributed in the flow distribution zone 2, thereby improving the heat exchange efficiency of the medium.

[0020] Furthermore, the fixed circular plate 6 on the medium diversion assembly 3 is fixedly mounted on the plate structure 1. The outer end of the mounting base plate 8 on the medium diversion assembly 3 has a bolt receiving groove 9, and the inner end of the mounting base plate 8 has a threaded hole 10. The threaded hole 10 communicates with the bolt receiving groove 9. The outer end of the mounting connecting plate 13 on the medium diversion assembly 3 has a fixing blind hole 14. The fixing bolt 11 on the medium diversion assembly 3 is installed in the bolt receiving groove 9 and the threaded hole 10 on the mounting base plate 8. The fixing bolt 11 also abuts against the fixing blind hole 14 at the outer end of the mounting connecting plate 13. The diameter of the fixing blind hole 14 is larger than the diameter of the threaded hole 10. When it is necessary to rotate and adjust the movable guide rod 12 to adjust the channel width between two adjacent medium diversion assemblies 3, a tool can be used first. Loosen the fixing bolt 11 to release the fixing of the mounting connecting plate 13 and the movable guide rod 12. Then, the mounting connecting plate 13 and the movable guide rod 12 can be rotated around the fixing bolt 11. When the mounting connecting plate 13 and the movable guide rod 12 rotate outward, the channel between two adjacent media diversion components 3 will narrow. Conversely, when the mounting connecting plate 13 and the movable guide rod 12 rotate inward, the channel between two adjacent media diversion components 3 will widen. When the channel between two adjacent media diversion components 3 narrows, the resistance to media flow will increase, and the flow rate of the media in the channel will decrease. When the channel between two adjacent media diversion components 3 widens, the resistance to media flow will decrease, and the flow rate of the media in the channel will increase.

[0021] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flow distribution zone structure for a plate heat exchanger, characterized in that: The medium diversion assembly (3) includes several of them, each fixedly installed in a diversion area (2) on a plate structure (1). The several medium diversion assemblies (3) are evenly distributed around the medium through holes (5) opened on the plate structure (1). The medium diversion assembly (3) consists of a fixed circular plate (6), a fixed guide rod (7), a mounting base plate (8), a fixing bolt (11), a movable guide rod (12), and a mounting connecting plate (13). There are two fixed guide rods (7) that are symmetrically fixedly installed on the outer wall of the fixed circular plate (6). There are two mounting base plates (8) that are fixedly installed at one end of the two fixed guide rods (7). There are two fixing bolts (11) that are installed on the two mounting base plates (8). There are two mounting connecting plates (13) that are installed on the inner side of the two mounting base plates (8) by fixing bolts (11). There are two movable guide rods (12) that are fixedly installed at one end of the two mounting connecting plates (13).

2. The flow distribution zone structure of a plate heat exchanger according to claim 1, characterized in that: A herringbone corrugation (4) is provided in the diversion area (2) on the plate structure (1).

3. The flow distribution zone structure of a plate heat exchanger according to claim 2, characterized in that: The fixed circular plate (6) on the medium diversion assembly (3) is fixedly installed on the plate structure (1).

4. The flow distribution zone structure of a plate heat exchanger according to claim 3, characterized in that: The mounting base (8) on the medium diversion assembly (3) has a bolt storage groove (9) at its outer end and a threaded hole (10) at its inner end. The threaded hole (10) and the bolt storage groove (9) are interconnected.

5. The flow distribution zone structure of a plate heat exchanger according to claim 4, characterized in that: The mounting connection plate (13) on the medium diversion assembly (3) has a fixing blind hole (14) at its outer end.

6. The flow distribution zone structure of a plate heat exchanger according to claim 5, characterized in that: The fixing bolt (11) on the medium diversion assembly (3) is installed in the bolt storage groove (9) and threaded hole (10) opened on the mounting base plate (8), and the fixing bolt (11) also abuts against the fixing blind hole (14) opened at the outer end of the mounting connection plate (13).

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