Heat exchanger for petrochemical industry production

Abstract

The utility model discloses a heat exchanger for petrochemical industry production, which comprises a heat exchanger main body, the heat exchanger main body comprises a heat exchange barrel, a liquid inlet box and a liquid inlet pipe are arranged on one side of the heat exchange barrel, a liquid outlet box and a liquid outlet pipe are arranged on the other side of the heat exchange barrel, sealing blocks are symmetrically arranged on the heat exchange barrel, a heat exchange pipe is arranged between the sealing blocks, and a filter box is arranged on the liquid inlet pipe. A filter plate and filter holes are formed in the filter box, a cleaning device is arranged on the filter plate, a supporting frame is arranged at the bottom of the filter plate, an electromagnet is arranged on the supporting frame, a dredging plate and a dredging rod are arranged on the supporting frame, and a magnet block is arranged on the dredging rod. And through cooperation of an electromagnet and a magnet block, a dredging plate and a dredging rod are conveniently driven to move on the supporting frame, through cooperation of the dredging rod and a filtering hole, impurities are prevented from blocking the filtering hole, the maintenance frequency of the filtering plate is reduced, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical technology, and more specifically, to a heat exchanger for petrochemical production. Background Technology

[0002] In the petrochemical production process, heat exchangers are one of the key pieces of equipment, used to transfer and recover heat, improve energy efficiency, and reduce production costs. Heat exchangers are widely used in various process units, such as crude oil distillation, catalytic cracking, hydrotreating, and thermal pyrolysis.

[0003] Shell-and-tube heat exchangers mainly consist of a shell, heat exchange tubes, tube sheet, and end caps. The shell is mostly circular, and contains several parallel circular or spiral heat exchange tubes. The two ends of the heat exchange tubes are fixed to the tube sheet. In the shell-and-tube heat exchanger, two fluids exchange heat: one flows inside the tubes, and its path is called the tube side; the other flows outside the tubes, and its path is called the shell side.

[0004] Refrigerant filtration is a crucial step in the operation of a heat exchanger to ensure efficient operation and extend equipment life. However, impurities accumulated during filtration can easily clog the filter pores, making them difficult to clean and unclog, thus affecting subsequent filtration efficiency and increasing maintenance burden and costs. At the same time, excessively fast refrigerant flow rate and short residence time in the heat exchange tubes result in low heat exchange efficiency and limited heat exchange effect. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the problems existing in the prior art, this utility model provides a heat exchanger for petrochemical production to solve the technical problems of low heat exchange efficiency and easy clogging of filter plates mentioned in the background art.

[0007] (2) Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a heat exchanger for petrochemical production, comprising a heat exchanger body, the heat exchanger body including a heat exchange tank, a liquid inlet tank and a liquid inlet pipe on one side of the heat exchange tank, and a liquid outlet tank and a liquid outlet pipe on the other side, symmetrically arranged sealing blocks on the heat exchange tank, heat exchange tubes arranged between the sealing blocks, multiple heat exchange tubes arranged circumferentially along the sealing blocks, each heat exchange tube including a connecting pipe and a bent pipe, the bent pipe being arranged in an S-shape, a filter box on the liquid inlet pipe, a filter plate on the filter box, filter holes on the filter plate, a cleaning device on the filter plate, a support frame at the bottom of the filter plate, an electromagnet on the support frame, a dredging plate on the support frame, a dredging rod on the dredging plate cooperating with the filter holes, and a magnet on the dredging rod.

[0009] The present invention is further configured such that the heat exchange tank is provided with an inlet pipe and an outlet pipe, the inlet pipe being located below the heat exchange tank and the outlet pipe being located above the heat exchange tank, so that the hot liquid and the heat exchange tube can fully contact and exchange heat.

[0010] The present invention is further configured such that a first baffle and a second baffle are provided inside the heat exchange tank, the first baffle and the second baffle are spaced apart and have opposite opening directions, thereby extending the hot liquid flow path.

[0011] The present invention is further configured such that the cleaning device includes a cleaning groove, the cleaning groove is symmetrically arranged in the filter box, a cleaning block is slidably arranged in the cleaning groove, and a cleaning scraper is arranged between the cleaning blocks to clean the filter screen and filter holes.

[0012] The present invention is further configured such that one of the cleaning grooves is provided with a cleaning screw, the cleaning screw is threadedly connected to the cleaning block, and a cleaning motor is provided on one side of the cleaning screw; the other cleaning groove is provided with a cleaning slide rod, the cleaning slide rod is slidably connected to the cleaning block, and the cleaning motor drives the cleaning screw to rotate, thereby driving the cleaning block and the cleaning scraper to move.

[0013] The present invention is further configured such that a drain outlet is provided on one side of the filter box, and a drain plate is provided on the drain outlet, and the opening and closing of the drain outlet is controlled by the drain plate.

[0014] The present invention is further configured such that the filter box is equipped with a sewage discharge motor, the motor shaft of the sewage discharge motor is equipped with a sewage discharge screw, and the sewage discharge screw is threadedly connected to the sewage discharge plate, so as to facilitate the movement of the sewage discharge plate.

[0015] The present invention is further provided with a sealing gasket at the bottom of the sewage discharge plate, which improves the sealing performance of the sewage discharge port.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, this utility model provides a heat exchanger for petrochemical production, which has the following advantages:

[0018] 1. By installing a filter box on the liquid inlet tank, and installing a filter plate and filter holes inside the filter box, it is easy to filter the refrigerant. The cooperation of electromagnet and magnetic block facilitates the movement of the drain plate and drain rod on the support frame. The cooperation of the drain rod and filter holes prevents impurities from clogging the filter holes, reduces the maintenance frequency of the filter plate, and improves the convenience of use.

[0019] 2. The heat exchange tubes on the sealing block are composed of bent tubes and connecting tubes, which prolongs the flow time of the refrigerant in the heat exchange tubes, thereby extending the heat exchange time and improving the heat exchange effect. Through the cooperation of the first baffle and the second baffle, the flow path and flow time of the hot liquid in the heat exchange tank are extended, which improves the heat exchange efficiency and heat exchange effect.

[0020] 3. The cleaning motor drives the cleaning screw to rotate, which in turn drives the cleaning block and cleaning scraper to clean the impurities on the filter plate. The sewage discharge motor drives the sewage discharge screw to rotate, which in turn drives the sewage discharge plate to move vertically. The opening and closing of the sewage discharge control is controlled, which improves the convenience of cleaning the filter box. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the heat exchanger body in this utility model;

[0022] Figure 2 This is a cross-sectional view of the heat exchange tank in this utility model.

[0023] Figure 3 This is a longitudinal sectional view of the filter box in this utility model.

[0024] Figure 4 This is a longitudinal sectional view of the filter box from another angle in this utility model;

[0025] Figure 5 This is a schematic diagram of the cleaning device in this utility model.

[0026] In the diagram: 1. Heat exchanger body; 2. Heat exchange tank; 3. Liquid inlet tank; 4. Liquid inlet pipe; 5. Liquid outlet tank; 6. Liquid outlet pipe; 7. Sealing block; 8. Heat exchange tube; 9. Connecting pipe; 10. Bending pipe; 11. Filter box; 12. Filter plate; 13. Filter hole; 14. Support frame; 15. Electromagnet; 16. Unblocking plate; 17. Unblocking rod; 18. Magnetic block; 19. Feed pipe; 20. Discharge pipe; 21. First baffle; 22. Second baffle; 23. Cleaning tank; 24. Cleaning block; 25. Cleaning scraper; 26. Cleaning screw; 27. Cleaning motor; 28. Cleaning slide bar; 29. ​​Drain outlet; 30. Drain plate; 31. Drain motor; 32. Drain screw; 33. Sealing gasket. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] See also Figures 1-5 A heat exchanger for petrochemical production includes a heat exchanger body 1, which includes a heat exchange tank 2. One side of the heat exchange tank 2 has an inlet tank 3 and an inlet pipe 4, and the other side has an outlet tank 5 and an outlet pipe 6. Sealing blocks 7 are symmetrically arranged on the heat exchange tank 2, and heat exchange tubes 8 are arranged between the sealing blocks 7. Multiple heat exchange tubes 8 are arranged circumferentially along the sealing blocks 7. Each heat exchange tube 8 includes a connecting pipe 9 and a bent pipe 10, with the bent pipes 10 arranged in an S-shape. A filter box 11 is provided on the inlet pipe 4, and a filter plate 12 is provided on the filter box 11. The filter plate 12 has filter holes 13. The heat exchange tank 2 is equipped with a cleaning device. The bottom of the filter plate 12 is equipped with a support frame 14, an electromagnet 15 is provided on the support frame 14, a dredging plate 16 is provided on the support frame 14, a dredging rod 17 that cooperates with the filter hole 13 is provided on the dredging plate 16, and a magnet block 18 is provided on the dredging rod 17. The heat exchange tank 2 is equipped with an inlet pipe 19 and an outlet pipe 20. The inlet pipe 19 is located below the heat exchange tank 2, and the outlet pipe 20 is located above the heat exchange tank 2. The heat exchange tank 2 is equipped with a first baffle 21 and a second baffle 22. The first baffle 21 and the second baffle 22 are spaced apart and have opposite opening directions.

[0031] In this embodiment, during the petrochemical production process, the refrigerant is filtered through the filter box 11 and filter plate 12, then introduced into the inlet tank 3 through the inlet pipe 4, and enters the heat exchange tube 8 of the sealing block 7. The heat exchange tube 8 is arranged in an S-shape in the heat exchange tank 2, which prolongs the flow path and flow time of the refrigerant. The generated hot liquid enters the heat exchange tank 2 through the feed pipe 19. Through the separation effect of the first baffle 21 and the second baffle 22, the flow path of the hot liquid is extended, allowing it to fully exchange heat with the refrigerant in the heat exchange tube 8, thus achieving heat exchange. After the hot liquid cools down due to heat exchange, it is discharged through the discharge pipe 20. The refrigerant is heated in the heat exchange tube 8 and then discharged through the outlet tank 5 and the outlet pipe 6. The continuous heat exchange of the hot liquid by the flowing refrigerant improves the heat exchange effect.

[0032] See also Figures 3-5As one embodiment of the cleaning device: the cleaning device includes a cleaning trough 23, which is symmetrically arranged in the filter box 11. A cleaning block 24 is slidably arranged in the cleaning trough 23, and a cleaning scraper 25 is arranged between the cleaning blocks 24. A cleaning screw 26 is provided in one of the cleaning troughs 23, and the cleaning screw 26 is threadedly connected to the cleaning block 24. A cleaning motor 27 is provided on one side of the cleaning screw 26. A cleaning slide rod 28 is provided in the other cleaning trough 23, and the cleaning slide rod 28 is slidably connected to the cleaning block 24. A drain port 29 is provided on one side of the filter box 11, and a drain plate 30 is provided on the drain port 29. A drain motor 31 is provided on the filter box 11, and a drain screw 32 is provided on the motor shaft of the drain motor 31. The drain screw 32 is threadedly connected to the drain plate 30, and a sealing gasket 33 is provided at the bottom of the drain plate 30.

[0033] More specifically, the refrigerant is filtered through the filter holes 13 on the filter plate 12 inside the filter box 11. Impurities accumulate on the filter plate 12. The cleaning motor 27 is started, and the motor shaft of the cleaning motor 27 drives the cleaning screw 26 to rotate, which in turn drives the cleaning block 24 and the cleaning scraper 25 to clean the impurities on the filter plate 12. The drain motor 31 drives the drain screw 32 to rotate, which in turn drives the drain plate 30 to move upward to open the drain port 29, making it easier to discharge impurities. After cleaning, the drain motor 31 drives the drain screw 32 to reverse, and the drain plate 30 moves downward to close the drain port 29. The sealing gasket 33 improves the sealing of the drain port 29. The cleaning motor 27 reverses and drives the cleaning scraper 25 to reset. With the filtration of impurities and the cleaning action of the cleaning scraper 25, some impurities are easily blocked in the filter holes 13. When the electromagnet 15 is energized, the electromagnet 15 and the magnetic block 18 repel each other, which drives the unblocking plate 16 and the unblocking rod 17 to unblock the filter holes 13 and prevent the filter holes 13 from becoming blocked.

[0034] In summary, during the use or operation of the overall equipment: In the petrochemical production process, the refrigerant is filtered through the filter box 11 and filter plate 12, and then enters the inlet tank 3 through the inlet pipe 4, and then enters the heat exchange tube 8 of the sealing block 7. The heat exchange tube 8 is arranged in an S-shape in the heat exchange tank 2, which prolongs the flow path and flow time of the refrigerant. The generated hot liquid enters the heat exchange tank 2 through the feed pipe 19. Through the separation effect of the first baffle 21 and the second baffle 22, the flow path of the hot liquid is extended, allowing it to fully exchange heat with the refrigerant in the heat exchange tube 8, thus achieving heat exchange. After the hot liquid cools down after heat exchange, it is discharged through the discharge pipe 20. The refrigerant is heated in the heat exchange tube 8 and then discharged through the outlet tank 5 and the outlet pipe 6. The continuous heat exchange of the hot liquid by the flowing refrigerant improves the heat exchange effect.

[0035] The refrigerant is filtered through the filter holes 13 on the filter plate 12 inside the filter box 11. Impurities accumulate on the filter plate 12. The cleaning motor 27 is started, and the motor shaft of the cleaning motor 27 drives the cleaning screw 26 to rotate, which in turn drives the cleaning block 24 and the cleaning scraper 25 to clean the impurities on the filter plate 12. The drain motor 31 drives the drain screw 32 to rotate, which in turn drives the drain plate 30 to move upward and open the drain port 29 to facilitate the discharge of impurities. After cleaning, the drain motor 31 drives the drain screw 32 to reverse, and the drain plate 30 moves downward to close the drain port 29. The sealing gasket 33 improves the sealing of the drain port 29. The cleaning motor 27 reverses and drives the cleaning scraper 25 to reset. With the filtration of impurities and the cleaning action of the cleaning scraper 25, some impurities are prone to blockage in the filter holes 13. When the electromagnet 15 is energized, the electromagnet 15 and the magnetic block 18 repel each other, which drives the unblocking plate 16 and the unblocking rod 17 to unblock the filter holes 13 and prevent the filter holes 13 from becoming blocked.

[0036] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0037] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0038] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.

[0039] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies, and this utility model will not elaborate on them.

Claims

1. A heat exchanger for petrochemical production, comprising a heat exchanger body (1), characterized in that: The heat exchanger body (1) includes a heat exchange tank (2). One side of the heat exchange tank (2) is provided with an inlet tank (3) and an inlet pipe (4), and the other side is provided with an outlet tank (5) and an outlet pipe (6). The heat exchange tank (2) is symmetrically provided with sealing blocks (7), and heat exchange tubes (8) are provided between the sealing blocks (7). Multiple heat exchange tubes (8) are arranged circumferentially around the sealing blocks (7). Each heat exchange tube (8) includes a connecting pipe (9) and a bent pipe (10). The bent pipe (10) is arranged in an S-shape. The inlet pipe (4) is provided with... A filter box (11) is provided with a filter plate (12), a filter hole (13) is provided on the filter plate (12), a cleaning device is provided on the filter plate (12), a support frame (14) is provided at the bottom of the filter plate (12), an electromagnet (15) is provided on the support frame (14), a drain plate (16) is provided on the support frame (14), a drain rod (17) that cooperates with the filter hole (13) is provided on the drain plate (16), and a magnet (18) is provided on the drain rod (17).

2. The heat exchanger for petrochemical production according to claim 1, characterized in that: The heat exchange tank (2) is provided with a feed pipe (19) and a discharge pipe (20). The feed pipe (19) is located below the heat exchange tank (2), and the discharge pipe (20) is located above the heat exchange tank (2).

3. A heat exchanger for petrochemical production according to claim 1, characterized in that: The heat exchange tank (2) is provided with a first baffle (21) and a second baffle (22), the first baffle (21) and the second baffle (22) are spaced apart and have opposite opening directions.

4. A heat exchanger for petrochemical production according to claim 1, characterized in that: The cleaning device includes a cleaning trough (23), which is symmetrically arranged in the filter box (11). A cleaning block (24) is slidably arranged in the cleaning trough (23), and a cleaning scraper (25) is arranged between the cleaning blocks (24).

5. A heat exchanger for petrochemical production according to claim 4, characterized in that: one of them A cleaning screw (26) is provided in the cleaning groove (23), and the cleaning screw (26) is threadedly connected to the cleaning block (24). A cleaning motor (27) is provided on one side of the cleaning screw (26), and a cleaning slide rod (28) is provided in the other cleaning groove (23), and the cleaning slide rod (28) is slidably connected to the cleaning block (24).

6. A heat exchanger for petrochemical production according to claim 1, characterized in that: The filter box (11) is provided with a drain outlet (29) on one side, and a drain plate (30) is provided on the drain outlet (29).

7. A heat exchanger for petrochemical production according to claim 6, characterized in that: The filter box (11) is equipped with a sewage discharge motor (31), and the motor shaft of the sewage discharge motor (31) is equipped with a sewage discharge screw (32), which is threadedly connected to the sewage discharge plate (30).

8. A heat exchanger for petrochemical production according to claim 7, characterized in that: The bottom of the drain plate (30) is provided with a sealing gasket (33).

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