Abrasion-resistant flow guide device of plate heat exchanger

Abstract

The utility model discloses a wear-resistant flow guide device of a plate heat exchanger, which relates to the technical field of heat exchangers and comprises a fixing plate and a flow guide mechanism, the flow guide mechanism is arranged on one side of the fixing plate and comprises a flow guide plate sheet arranged on one side of the fixing plate, and a corrosion-resistant coating is attached to the outer surface of the flow guide plate sheet. A low-pore flow layer is arranged on the inner surface of the flow guide plate, a dense-pore flow layer is arranged at the position, away from the low-pore flow layer, of the inner surface of the flow guide plate, a damping mechanism is fixedly connected to one side of the fixing plate, and the flow guide plate is a metal thin plate, is an important heat transfer element and is provided with corrugations, so that heat transfer can be enhanced. Compared with an existing common heat exchanger flow guiding device, the abrasion-resistant flow guiding device of the plate heat exchanger has the advantages that a local high-speed area is restrained, the scaling risk is reduced, the adaptability to high-viscosity or particle-containing fluid is improved, the fluid guiding capacity is enhanced, and the problem that the flow guiding device and a plate are not firmly fixed or the resonant frequency is improperly designed is solved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a wear-resistant and corrosion-resistant flow guiding device for plate heat exchangers. Background Technology

[0002] A heat exchanger is a device that transfers part of the heat from a hot fluid to a cold fluid. Also known as a heat exchanger, heat exchangers play a vital role in chemical, petroleum, power, food, and many other industrial production processes. A plate heat exchanger is a highly efficient heat exchanger composed of a series of metal plates with a specific corrugated shape stacked together. Thin rectangular channels are formed between the plates, through which heat exchange occurs. Plate heat exchangers are ideal for liquid-liquid and liquid-vapor heat exchange, featuring high heat exchange efficiency, low heat loss, compact and lightweight structure, small footprint, wide application, and long service life.

[0003] A detachable plate heat exchanger, as described in application number CN202123240936.6, includes a bottom trough, which is an elongated trough. Heat exchange plate bundles are vertically arranged in the bottom trough, and side plates are symmetrically arranged on both sides of the heat exchange plate bundles. The bottom of the side plates is connected to the bottom trough, and locking strips are welded to the side plates. One side of the locking strip engages with recesses on both sides of the heat exchange plate bundles, and the tops of the side plates are interconnected. This utility model has a reasonable and ingenious structural design. The heat exchange plate bundles stand vertically in the bottom trough, and when disassembling, only the side plates need to be removed. During disassembly, the heat exchange plate bundles will not collapse, avoiding deformation of the heat exchange plates. Furthermore, the side plates can reduce the impact of the external environment on the heat exchanger's heat exchange. However, this heat exchanger's flow guiding device has low adaptability to different fluids, resulting in uneven fluid flow, easy accumulation of dirt on the surface, and unstable fluid flow, which can affect the equipment.

[0004] Therefore, in view of this, we have studied and improved the existing structure to address its shortcomings, and proposed a wear-resistant and corrosion-resistant flow guiding device for plate heat exchangers. Utility Model Content

[0005] The purpose of this invention is to provide a wear-resistant and corrosion-resistant flow guiding device for plate heat exchangers to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant and corrosion-resistant flow guiding device for a plate heat exchanger, comprising a fixed plate and a flow guiding mechanism, characterized in that a flow guiding mechanism is provided on one side of the fixed plate, and the flow guiding mechanism includes a flow guiding plate disposed on one side of the fixed plate, the outer surface of the flow guiding plate is coated with an anti-corrosion coating, and the inner surface of the flow guiding plate is provided with a low-porosity flow layer, and the inner surface of the flow guiding plate is provided with a dense-porosity flow layer at a position away from the low-porosity flow layer, and a shock-absorbing mechanism is fixedly connected to one side of the fixed plate.

[0007] Preferably, the shock absorption mechanism includes a base plate fixedly connected to one side of the fixed plate, and a connecting plate fixedly connected to one side of the base plate. A shock absorber is fixedly connected to the bottom of the connecting plate, and a pad is fixedly connected to the bottom of the shock absorber.

[0008] Preferably, a sealing ring is fixedly connected to one side of the guide plate, and an inlet is provided on the inner surface of the fixed plate.

[0009] Preferably, the inner surface of the fixing plate has an outlet located away from the inlet, and a flange is fixedly connected to one side of the outlet.

[0010] Preferably, a movable plate is provided on one side of the guide plate, and a guide rod is provided on the inner surface of the movable plate.

[0011] Preferably, the inner surface of the movable plate is provided with mounting holes, and bolts are installed inside the mounting holes.

[0012] Preferably, a washer is provided on the outer surface of the bolt, and a nut is provided on one side of the washer.

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

[0014] 1. This utility model, through the setting of the flow guiding mechanism, forms a trapezoidal pore structure with low inlet pore density and high outlet pore density. By balancing the flow velocity through the gradual distribution of pores, it can suppress local high-speed zones, reduce the risk of scaling, improve the adaptability to high viscosity or particulate fluids, enhance the fluid guiding ability, and avoid uneven distribution. Through the setting of the anti-corrosion coating, it can reduce the adhesion of dirt and avoid the accumulation of dirt due to insufficient corrosion resistance or rough surface, which would affect the service life of the equipment.

[0015] 2. This utility model, through the setting of a shock-absorbing mechanism, alleviates the problems of loose fixing of the flow guiding device and plate or improper design of the resonant frequency, reduces the noise caused by vibration due to unstable fluid flow or loose structure, and increases the stability of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall disassembled structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the flow guiding mechanism 3 of this utility model;

[0019] Figure 4 This is a schematic diagram of the shock absorption mechanism 3 of this utility model.

[0020] In the diagram: 1. Fixed plate; 2. Flow guiding mechanism; 201. Flow guiding plate; 202. Anti-corrosion coating; 203. Low porosity flow layer; 204. Dense porosity flow layer; 3. Shock absorption mechanism; 301. Foot plate; 302. Connecting plate; 303. Shock absorber; 304. Pad; 4. Sealing ring; 5. Inlet; 6. Outlet; 7. Flange; 8. Movable plate; 9. Guide rod; 10. Mounting hole; 11. Bolt; 12. Washer; 13. Nut. Detailed Implementation

[0021] 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.

[0022] like Figures 1-2 As shown, a wear-resistant flow guiding device for a plate heat exchanger includes a fixed plate 1 and a flow guiding mechanism 2. The flow guiding mechanism 2 is provided on one side of the fixed plate 1, and the flow guiding mechanism 2 includes a flow guiding plate 201 located on one side of the fixed plate 1. The outer surface of the flow guiding plate 201 is coated with an anti-corrosion coating 202, and the inner surface of the flow guiding plate 201 is provided with a low-porosity flow layer 203. A dense-porosity flow layer 204 is provided on the inner surface of the flow guiding plate 201 away from the low-porosity flow layer 203. A shock-absorbing mechanism 3 is fixedly connected to one side of the fixed plate 1. The flow guiding plate 201 is a thin metal plate and is an important heat transfer element. The corrugation not only enhances heat transfer but also increases the strength and rigidity of the flow guiding plate 201, thereby improving the pressure resistance of the plate heat exchanger. Furthermore, by promoting turbulent flow of the liquid, it can reduce the formation of sediment or fouling, thus playing a certain "self-cleaning" role.

[0023] like Figure 3 As shown, the shock absorption mechanism 3 includes a base plate 301 fixedly connected to one side of the fixed plate 1, and a connecting plate 302 fixedly connected to one side of the base plate 301. A shock absorber 303 is fixedly connected to the bottom of the connecting plate 302, and a pad 304 is fixedly connected to the bottom of the shock absorber 303. The inner surface of the base plate 301 is provided with mounting holes, which can be used to install or remove the base plate 301. Two sets of shock absorbers 303 are arranged between the connecting plate 302 and the pad 302. The bottom of the pad 302 is provided with a reinforcing layer, which has high strength and good resistance.

[0024] Furthermore, a sealing ring 4 is fixedly connected to one side of the guide plate 201, and an inlet 5 is opened on the inner surface of the fixed plate 1. An outlet 6 is opened on the inner surface of the fixed plate 1 away from the inlet 5, and a flange 7 is fixedly connected to one side of the outlet 6. The sealing ring 4 prevents fluid from leaking outward and seals part of the corner hole according to the design requirements, so that cold and hot liquids flow according to their respective flow channels. The flange 7 can connect pipes of different materials, diameters and types, so that they can transmit fluid.

[0025] Furthermore, a movable plate 8 is provided on one side of the guide plate 201, and a guide rod 9 is provided on the inner surface of the movable plate 8. A mounting hole 10 is opened on the inner surface of the movable plate 8, and a bolt 11 is provided inside the mounting hole 10. The movable plate 8 can be changed in position according to the guide plate 201 of different thicknesses. The bolt 11 and the mounting hole 10 fix the movable plate 8. By clamping and pressing all the guide plates 201, the fluid medium is prevented from leaking.

[0026] Furthermore, a washer 12 is provided on the outer surface of the bolt 11, and a nut 13 is provided on one side of the washer 12. The nut 13 on the outside of the bolt 11 serves to fasten the movable plates 8 and the fixed plate 1 at both ends. The washer 12 prevents the nut 13 from loosening and improves the firmness of the nut 13.

[0027] Working principle: When using the wear-resistant and corrosion-resistant flow guiding device for this plate heat exchanger, firstly, place multiple sets of flow guiding plates 201 with anti-corrosion coating 202 on one side of the fixed plate 1. Move the movable plate 8 along the guide rod 9 towards the fixed plate 1 to clamp the flow guiding plates 201. Then, pass the bolts 11 through the mounting holes 10 inside the movable plate 8 and the fixed plate 1. The washers 12 contact the fixed plate 1. Tighten the nuts 13 to clamp and fix the multiple sets of flow guiding plates 201. Connect the appropriate pipeline through the flange 7 to start the medium transmission. Then, two or more fluids with different temperatures enter the flow guiding mechanism through the two sets of inlets 5. When the low-porosity flow layer 203 of the plate heat exchanger enters the parallel-arranged guide plates 201, heat is transferred from the high-temperature fluid to the low-temperature fluid. The hot and cold fluids flow on both sides of the guide plates 201, exchange heat through the thin rectangular channels, and then exit through the outlet 6 of the dense-porosity flow layer 204. During the heat exchange process, the pad 304 at the bottom of the damping mechanism 3 contacts the ground, and the damper 303 at the bottom of the connecting plate 302 effectively reduces the noise caused by unstable fluid flow or structural loosening, thus extending the service life of the device. This is the working principle of the wear-resistant guide device of the plate heat exchanger.

Claims

1. A wear-resistant and corrosion-resistant flow guiding device for a plate heat exchanger, comprising a fixed plate (1) and a flow guiding mechanism (2), characterized in that, A flow guiding mechanism (2) is provided on one side of the fixed plate (1), and the flow guiding mechanism (2) includes a flow guiding plate (201) located on one side of the fixed plate (1). The outer surface of the flow guiding plate (201) is coated with an anti-corrosion coating (202), and the inner surface of the flow guiding plate (201) is provided with a low-porosity flow layer (203). A dense-porosity flow layer (204) is provided on the inner surface of the flow guiding plate (201) away from the low-porosity flow layer (203). A shock-absorbing mechanism (3) is fixedly connected to one side of the fixed plate (1).

2. The wear-resistant and corrosion-resistant flow guiding device for a plate heat exchanger according to claim 1, characterized in that, The shock absorption mechanism (3) includes a foot plate (301) fixedly connected to one side of the fixed plate (1), and a connecting plate (302) is fixedly connected to one side of the foot plate (301). A shock absorber (303) is fixedly connected to the bottom of the connecting plate (302), and a pad (304) is fixedly connected to the bottom of the shock absorber (303).

3. The wear-resistant and corrosion-resistant flow guiding device for a plate heat exchanger according to claim 1, characterized in that, A sealing ring (4) is fixedly connected to one side of the flow guide plate (201), and an inlet (5) is opened on the inner surface of the fixing plate (1).

4. The wear-resistant and corrosion-resistant flow guiding device for a plate heat exchanger according to claim 1, characterized in that, The inner surface of the fixed plate (1) is provided with an outlet (6) away from the inlet (5), and a flange (7) is fixedly connected to one side of the outlet (6).

5. The wear-resistant and corrosion-resistant flow guiding device for a plate heat exchanger according to claim 1, characterized in that, A movable plate (8) is provided on one side of the flow guide plate (201), and a guide rod (9) is provided on the inner surface of the movable plate (8).

6. The wear-resistant and corrosion-resistant flow guiding device for a plate heat exchanger according to claim 5, characterized in that, The inner surface of the movable plate (8) is provided with mounting holes (10), and bolts (11) are provided inside the mounting holes (10).

7. The wear-resistant and corrosion-resistant flow guiding device for a plate heat exchanger according to claim 6, characterized in that, A washer (12) is provided on the outer surface of the bolt (11), and a nut (13) is provided on one side of the washer (12).

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