Discontinuous type spiral baffle plate heat exchanger with filtering assembly

Abstract

A discontinuous spiral baffle plate heat exchanger with a filtering assembly comprises a shell arranged outside, a material inlet formed in the top end of the shell and a plurality of heat exchange tubes which are installed in the shell and communicated with the material inlet, and further comprises a tube plate, a material outlet, a discontinuous spiral baffle plate, a fluid medium outlet, a fluid medium inlet and the filtering assembly. A plurality of discontinuous spiral baffle plates are mounted on the heat exchange tube, a fluid medium inlet is formed in the bottom of the other side of the shell, and a filtering assembly is mounted on the fluid medium inlet; the filter assembly comprises a cylinder, a filter screen, a blow-off pipe and a blow-off valve, one end of the cylinder is installed on the fluid medium inlet, the filter screen is installed in the cylinder, a spray head is installed on one side of the filter screen, and a conveying pipe penetrating through the cylinder is connected to the spray head. Meanwhile, the filter screen is convenient to clean, the operation is simple and convenient, and the use is facilitated.

Description

Technical Field

[0001] This utility model relates to heat exchangers, specifically a discontinuous spiral baffle heat exchanger with a filter assembly. Background Technology

[0002] According to the "Analysis Report on Production, Sales, Demand and Transformation and Upgrading of China's Compressed Air Drying and Purification Industry," compressed air is the second largest energy source after electricity, with applications spanning industries and sectors such as bio-fermentation, petroleum, chemical, food, and pharmaceuticals. However, because compressed air contains a large amount of moisture, it cannot be used directly. Therefore, it often needs to be cooled to remove moisture before being heated and calibrated into a qualified gas. Cooling of compressed air can be achieved using heat exchangers.

[0003] Traditional shell-and-tube heat exchangers suffer from severe backmixing of the shell-side fluid on the leeward side at the connection between the baffle and the shell due to baffle obstruction and other factors. This prevents some fluid from fully participating in heat transfer, reducing heat transfer efficiency. Therefore, discontinuous spiral baffle heat exchangers are often used in industry to cool compressed air instead of shell-and-tube heat exchangers. A discontinuous spiral baffle heat exchanger generally consists of a shell side, tube sheet, heat exchange tubes, discontinuous spiral baffles, and tube box. Ideally, a discontinuous spiral baffle should have a continuous spiral surface. However, due to manufacturing difficulties, the baffles currently used are generally composed of several quarter-segmented flat plates connected alternately to form an approximate spiral surface; such baffles are called discontinuous spiral baffles.

[0004] When using existing discontinuous spiral baffles, the liquid medium is prone to carrying contaminants when entering the shell. Over time, these contaminants accumulate in the heat exchange tubes or discontinuous spiral baffles, affecting the heat exchange effect and hindering use. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model provides a discontinuous spiral baffle heat exchanger with a filter component. This effectively solves the problem that when the liquid medium enters the shell of the existing discontinuous spiral baffle, it is easy for the liquid medium to carry dirt. The dirt accumulates in the heat exchange tube or the discontinuous spiral baffle over a long period of time, which affects the heat exchange effect and is not conducive to use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The present invention includes an externally disposed shell, a material inlet disposed at the top of the shell, and a plurality of heat exchange tubes installed inside the shell and communicating with the material inlet. It also includes a tube sheet, a material outlet, a discontinuous spiral baffle, a fluid medium outlet, a fluid medium inlet, and a filter assembly. A plurality of discontinuous spiral baffles are installed on the heat exchange tubes. A fluid medium inlet is disposed at the bottom of the other side of the shell, and a filter assembly is installed on the fluid medium inlet.

[0007] The filtration assembly includes a cylinder, a filter screen, a nozzle, a delivery pipe, a one-way valve, a connecting pipe, a flushing valve, a gate valve, a drain pipe, and a drain valve. One end of the cylinder is installed at the fluid medium inlet. The filter screen is installed inside the cylinder, and a nozzle is installed on one side of the filter screen. A delivery pipe that penetrates the cylinder is connected to the nozzle. A connecting pipe is installed at one end of the cylinder, and a flushing valve is installed at the end of the delivery pipe near the connecting pipe. A gate valve is installed in the middle of the connecting pipe, and a drain pipe is installed on the connecting pipe on one side of the gate valve.

[0008] Preferably, the bottom end of the shell is provided with a tube sheet that communicates with the bottom end of the heat exchange tube, and a material outlet is provided on one side of the tube sheet.

[0009] Preferably, a one-way valve is installed on the delivery pipe near the nozzle.

[0010] Preferably, a drain valve is installed on the drain pipe.

[0011] Preferably, a fluid medium outlet is provided on one side of the top of the housing.

[0012] Preferably, the cylinder is connected to the fluid medium inlet pipe via a flange.

[0013] Beneficial Effects: In use, the liquid requiring heat exchange enters the heat exchange tube through the material inlet and exits through the tube sheet and material outlet. The fluid medium enters the shell through the filter assembly and fluid medium inlet, flowing upwards through the discontinuous spiral baffles, thus performing heat exchange on the liquid within the heat exchange tube. As the fluid medium passes through the cylinder, it is filtered by the filter screen, preventing contamination of the discontinuous spiral baffles. After the filter screen has been in use for a period of time, the gate valve is closed, and the flushing valve and drain valve are opened. External fluid is delivered to the nozzle through the delivery pipe, and the fluid sprayed from the nozzle backwashes the filter screen. The flushed contaminants are discharged through the drain pipe. After cleaning, the flushing valve, gate valve, and drain valve are closed, and the device is ready for use. This invention features a novel structure and ingenious design, facilitating the filtration of the fluid medium entering the shell and the cleaning of the filter screen. It is simple and convenient to operate, making it highly practical. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial internal structure diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the filter assembly structure of this utility model;

[0018] Labels in the diagram: 1. Shell; 2. Material inlet; 3. Heat exchange tube; 4. Tube sheet; 5. Material outlet; 6. Discontinuous spiral baffle; 7. Fluid medium outlet; 8. Fluid medium inlet; 9. Filter assembly; 10. Cylinder; 11. Filter screen; 12. Nozzle; 13. Delivery pipe; 14. Check valve; 15. Connecting pipe; 16. Flushing valve; 17. Gate valve; 18. Drain pipe; 19. Drain valve. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-3 The specific embodiments of this utility model will be described in further detail.

[0020] Example 1, by Figure 1-3 The present invention provides a discontinuous spiral baffle heat exchanger with a filter assembly, comprising an externally disposed shell 1, a material inlet 2 disposed at the top of the shell 1, and a plurality of heat exchange tubes 3 installed inside the shell 1 and communicating with the material inlet 2, and further comprising a tube sheet 4, a material outlet 5, a discontinuous spiral baffle 6, a fluid medium outlet 7, a fluid medium inlet 8, and a filter assembly 9. A plurality of discontinuous spiral baffles 6 are installed on the heat exchange tubes 3, and a fluid medium inlet 8 is disposed at the bottom of the other side of the shell 1, and a filter assembly 9 is installed on the fluid medium inlet 8.

[0021] The filter assembly 9 includes a cylinder 10, a filter screen 11, a nozzle 12, a delivery pipe 13, a one-way valve 14, a connecting pipe 15, a flushing valve 16, a gate valve 17, a drain pipe 18, and a drain valve 19. One end of the cylinder 10 is installed on the fluid medium inlet 8. The filter screen 11 is installed inside the cylinder 10. The nozzle 12 is installed on one side of the filter screen 11. The delivery pipe 13, which passes through the cylinder 10, is connected to the nozzle 12. The connecting pipe 15 is installed at one end of the cylinder 10. The flushing valve 16 is installed at the end of the delivery pipe 13 near the connecting pipe 15. The gate valve 17 is installed in the middle of the connecting pipe 15. The drain pipe 18 is installed on the connecting pipe 15 on one side of the gate valve 17.

[0022] In practical use: When using this utility model, the liquid that needs to be heated enters the heat exchange tube 3 through the material inlet 2, and finally exits through the tube sheet 4 and the material outlet 5. The fluid medium enters the interior of the shell 1 through the filter assembly 9 and the fluid medium inlet 8, and flows from bottom to top through the discontinuous spiral baffle 6, so that the liquid that needs to be heated in the heat exchange tube 3 can be heated. When the fluid medium passes through the cylinder 10, it will be filtered by the filter screen 11 to prevent the fluid medium entering the shell 1 from contaminating the discontinuous spiral baffle 6. After the filter screen 11 has been used for a period of time, the gate valve 17 is closed and the flushing valve 16 and the drain valve 19 are opened. The external fluid is delivered to the nozzle 12 through the delivery pipe 13. After being sprayed out by the nozzle 12, the filter screen 11 is backwashed. The dirt after flushing is discharged through the drain pipe 18. After cleaning is completed, the flushing valve 16, the gate valve 17 and the drain valve 19 are closed, and it can be used.

[0023] Beneficial effects: This utility model has a novel structure and ingenious design, which facilitates the filtration of fluid media entering the housing 1, and at the same time facilitates the cleaning of the filter screen 11. It is simple and convenient to operate and is beneficial to use.

[0024] Example 2

[0025] In Example 1, heat exchange tube 3 is inconvenient to use; refer to... Figure 1 As another preferred embodiment, the difference from embodiment one is that the bottom end of the shell 1 is provided with a tube sheet 4 that communicates with the bottom end of the heat exchange tube 3, and a material outlet 5 is provided on one side of the tube sheet 4 to facilitate the connection and use of the heat exchange tube 3.

[0026] Example 3

[0027] In Example 1, the conveying pipe 13 is inconvenient to use; refer to... Figure 1 As another preferred embodiment, the difference from embodiment one is that a one-way valve 14 is installed on the delivery pipe 13 near the nozzle 12 to prevent liquid from flowing back through the delivery pipe 13.

[0028] Example 4

[0029] In Example 1, the sewage pipe 18 is inconvenient to control; refer to... Figure 1 As another preferred embodiment, the difference from embodiment one is that a drain valve 19 is installed on the drain pipe 18 to facilitate the control of the drain pipe 18.

[0030] Example 5

[0031] In Embodiment 1, the casing 1 is inconvenient to use; refer to... Figure 1 As another preferred embodiment, the difference from embodiment one is that a fluid medium outlet 7 is provided on one side of the top of the housing 1 to facilitate the use of the housing 1.

[0032] Example 6

[0033] In Example 1, the cylinder 10 is inconvenient to install and use; refer to... Figure 1 As another preferred embodiment, the difference from embodiment one is that the cylinder 10 is connected to the fluid medium inlet 8 pipe through a flange, which facilitates the installation and use of the cylinder 10.

[0034] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the 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.

Claims

1. A discontinuous spiral baffle heat exchanger with a filter assembly, comprising an externally disposed shell (1), a material inlet (2) disposed at the top of the shell (1), and a plurality of heat exchange tubes (3) installed inside the shell (1) communicating with the material inlet (2), characterized in that: It also includes tube sheet (4), material outlet (5), discontinuous spiral baffle (6), fluid medium outlet (7), fluid medium inlet (8) and filter assembly (9). Several discontinuous spiral baffles (6) are installed on the heat exchange tube (3), and a fluid medium inlet (8) is provided at the bottom of the other side of the shell (1). A filter assembly (9) is installed on the fluid medium inlet (8). The filter assembly (9) includes a cylinder (10), a filter screen (11), a nozzle (12), a delivery pipe (13), a check valve (14), a connecting pipe (15), a flushing valve (16), a gate valve (17), a drain pipe (18), and a drain valve (19). One end of the cylinder (10) is installed on the fluid medium inlet (8). The filter screen (11) is installed inside the cylinder (10). A nozzle (12) is installed on one side of the filter screen (11). A delivery pipe (13) that passes through the cylinder (10) is connected to the nozzle (12). A connecting pipe (15) is installed on one end of the cylinder (10). A flushing valve (16) is installed on the end of the delivery pipe (13) near the connecting pipe (15). A gate valve (17) is installed in the middle of the connecting pipe (15). A drain pipe (18) is installed on the connecting pipe (15) on one side of the gate valve (17).

2. A discontinuous spiral baffle heat exchanger with a filter assembly according to claim 1, characterized in that: The bottom end of the shell (1) is provided with a tube sheet (4) that communicates with the bottom end of the heat exchange tube (3), and a material outlet (5) is provided on one side of the tube sheet (4).

3. A discontinuous spiral baffle heat exchanger with a filter assembly according to claim 1, characterized in that: A one-way valve (14) is installed on the delivery pipe (13) near the nozzle (12).

4. A discontinuous spiral baffle heat exchanger with a filter assembly according to claim 1, characterized in that: A drain valve (19) is installed on the drain pipe (18).

5. A discontinuous spiral baffle heat exchanger with a filter assembly according to claim 1, characterized in that: A fluid medium outlet (7) is provided on one side of the top of the housing (1).

6. A discontinuous spiral baffle heat exchanger with a filter assembly according to claim 1, characterized in that: The cylinder (10) is connected to the fluid medium inlet (8) pipe via a flange.

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