Titanium plate heat exchanger for offshore wind power converter station

Abstract

The invention relates to the technical field of wind power converter stations, in particular to a titanium plate heat exchanger for an offshore wind power converter station, which comprises a prefilter arranged at a refrigerant inlet of the titanium plate heat exchanger, and a refrigerant enters a heat exchange plate of the titanium plate heat exchanger through the refrigerant inlet after passing through the prefilter and cools a heating medium in the heat exchange plate; a lower partition plate is arranged between a lower shell and a middle shell of the pre-filter; an upper partition plate is arranged between a middle shell and an upper shell of the pre-filter; the filter assembly is mounted in the middle shell through an upper partition plate and a lower partition plate; a self-flushing assembly is arranged in the filter assembly, and the self-flushing assembly is driven by a rotary actuator and an air cylinder to change a passage of the filter assembly, so that attachments on a filter screen cylinder of the filter assembly are removed and discharged from a sewage outlet in the lower shell.

Description

Technical Field

[0001] This invention relates to the field of wind power converter station technology, specifically a titanium plate heat exchanger for offshore wind power converter stations. Background Technology

[0002] Key components in offshore wind power converter stations, such as IGBT (Insulated Gate Bipolar Transistor) modules, transformers, reactors, DC capacitors, and AC filters, generate significant heat during power conversion and transmission. If this heat cannot be dissipated promptly, it can lead to overheating, reduced efficiency, accelerated aging, and even insulation failure, short circuits, or explosions, severely impacting the reliability and lifespan of the converter station. The high humidity and corrosive salt spray of the offshore environment, coupled with high temperatures, exacerbate metal oxidation and insulation material degradation; therefore, a highly efficient and corrosion-resistant cooling system is essential.

[0003] Offshore wind power converter stations can use seawater as a coolant. Seawater resources are abundant and low-cost, and can be directly obtained from the surrounding environment, saving on additional storage and transportation costs for coolant. In addition, seawater has high heat exchange efficiency, large specific heat capacity, and sufficient flow, which can quickly remove heat, making it suitable for the cooling needs of high-power converter stations. Titanium plate heat exchangers are highly corrosion-resistant and have a compact structure. Plate heat exchangers themselves have a high heat transfer coefficient, and combining them with seawater cooling can further reduce the size of the equipment, adapting to the limited space of offshore platforms. The high salinity and corrosiveness of seawater require heat exchangers to use corrosion-resistant materials (such as titanium alloys) and be equipped with anti-biofouling measures. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: A titanium plate heat exchanger for an offshore wind power converter station includes a pre-filter disposed at the refrigerant inlet of the titanium plate heat exchanger. After passing through the pre-filter, the refrigerant enters the heat exchange plate of the titanium plate heat exchanger through the refrigerant inlet, cooling the heat exchanger in the heat exchange plate. A lower partition is disposed between the lower shell and the middle shell of the pre-filter. An upper partition is disposed between the middle shell and the upper shell of the pre-filter. A filter assembly is installed in the middle shell through the upper and lower partitions. A self-cleaning component is disposed in the filter assembly. A rotary actuator and a cylinder are disposed outside the upper shell and are pulverizedly connected to the self-cleaning component. The self-cleaning component is driven by the rotary actuator and the cylinder to change the passage of the filter assembly, thereby removing the deposits on the filter screen of the filter assembly and discharging them from the drain port in the lower shell. Furthermore, the self-cleaning assembly is provided with a linkage component; the cylinder drives the upper rotating frame of the self-cleaning assembly to press down and close the port of the filter cylinder located at the upper partition; the upper rotating frame drives the lower rotating frame to move up through the linkage component and connects the interface seat of the lower rotating frame with the port of the filter cylinder located at the lower partition; the interface seat is connected to the drain port through a drain pipe.

[0005] Furthermore, the lower partition forms a lower cavity within the lower shell; the lower and upper partitions form a middle cavity within the middle shell; the lower port of the filter cylinder of the filter assembly is located in the lower through hole of the lower partition; the upper port of the filter cylinder is located in the upper through hole of the upper partition; the refrigerant enters the lower cavity through the inlet of the lower shell, and then enters the filter cylinder through the lower through hole; the refrigerant is filtered through the cylinder wall of the filter cylinder and then enters the middle cavity; the filtered refrigerant flows out from the outlet of the middle shell and enters the refrigerant inlet of the titanium plate heat exchanger.

[0006] Furthermore, the filter assembly has multiple filter cylinders; the upper rotating frame closes the upper port of the unclosed filter cylinder, and the lower rotating frame connects the lower port of the filter cylinder to the drain pipe; refrigerant enters the middle cavity through the unclosed filter cylinder; the refrigerant in the middle cavity enters the interior of the filter cylinder in the opposite direction through the cylinder wall of the closed filter cylinder and impacts the deposits on the inner wall of the filter cylinder; the deposits are discharged from the drain port after passing through the drain pipe.

[0007] Furthermore, the central column of the self-rinsing assembly is rotatably disposed in the middle of the upper and lower partitions; the lower end of the central column is provided with a lower rotating frame located below the lower partition; and the upper end of the central column is provided with an upper rotating frame located above the upper partition.

[0008] Furthermore, a gear is provided at the upper end of the central column; the gear is rotatably supported on a first bracket on the upper housing; the rotary actuator is fixed on the first bracket; and the output end of the rotary actuator is connected to the gear transmission.

[0009] Furthermore, a pull rod is provided in the middle of the interface seat of the lower rotating frame; the pull rod is inside the column and can slide relative to the column under the drive of the linkage component; the upper end of the pull rod is provided in the upper support of the linkage component at the upper part of the column; the sliding seat of the upper rotating frame is inserted into the upper support; a pressure rod is provided on the sliding seat.

[0010] Furthermore, a turntable is provided at the upper end of the gear; the turntable is rotatably supported on a second bracket on the upper housing; a cylinder is provided on the turntable; the movable end of the cylinder is connected to the pressure rod.

[0011] Furthermore, a limiting cylinder is provided in the middle of the upper support, and the upper end of the pull rod is disposed in the limiting cylinder; the limiting cylinder is provided with a laterally extending limiting hole; the upper end of the pull rod is provided with an oblique hole; the oblique rod in the middle of the actuator block of the linkage assembly is disposed in the oblique hole; the limiting surfaces at both ends of the actuator block cooperate with the limiting hole; a wedge is provided in the lower part of the sliding seat; the wedge engages with the wedge surfaces at both ends of the actuator block; when the sliding seat moves up and down, the wedge pushes the actuator block to move laterally; when the actuator block moves laterally, it drives the pull rod to move up and down.

[0012] Furthermore, a first baffle and a second baffle are respectively provided at two adjacent lower through holes on the lower partition plate; when the interface seat of the lower rotating frame rotates to the first baffle, the lower rotating frame can close the first part of the filter cylinder; when the interface seat rotates to the second baffle, the lower rotating frame can close the remaining part of the filter cylinder.

[0013] Beneficial effects Compared with the prior art, the present invention provides a titanium plate heat exchanger for offshore wind power converter stations, which has the following advantages: a pre-filter is provided in front of the titanium plate heat exchanger, which can draw seawater from the offshore wind power converter station as a refrigerant, reducing the operating cost of the offshore wind power converter station; the pre-filter is equipped with a self-cleaning device, which can remove the deposits on the filter screen cylinder; the self-cleaning device is equipped with a linkage component, which optimizes the sealing structure when the filter screen cylinder is closed and improves the corrosion resistance of the sealing structure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the titanium plate heat exchanger for offshore wind power converter stations according to the present invention. Figure 2 This is a schematic diagram of the structure of the pre-filter of the present invention; Figure 3 This is a schematic diagram of the structure of the filter assembly of the present invention; Figure 4 This is a schematic diagram of the self-rinsing process of the present invention; Figure 5 This is a schematic diagram of the self-rinsing assembly of the present invention; Figure 6 This is a cross-sectional view of the linkage component of the present invention; Figure 7 This is a cross-sectional view of another location of the linkage component of the present invention; Figure 8 This is a schematic diagram of the linkage component of the present invention; Figure 9 This is a structural schematic diagram of another location of the linkage component of the present invention; Figure 10This is a schematic diagram of the self-rinsing assembly actuation mechanism of the present invention; Figure 11 For the present invention Figure 10 Internal structure diagram of the location; Figure 12 This is a schematic diagram of the lower rotating frame of the present invention in the first position; Figure 13 This is a schematic diagram of the lower rotating frame of the present invention in the second position; In the picture: Pre-filter 100; Lower shell 1, inlet 11, drain outlet 12, lower cavity 13; 2. Middle shell; 21. Outlet; 22. Middle cavity; Upper shell 3, first bracket 31, second bracket 32; Rotary actuator 4; Cylinder 5; Filter assembly 6, lower partition 61, first baffle 611, second baffle 612, lower through hole 610, upper partition 62, upper through hole 620, filter screen cylinder 63; Self-cleaning assembly 7, center column 71, column body 710, upper rotating frame 72, cover 720, sliding seat 721, pressure rod 722, lower rotating frame 73, interface seat 730, pull rod 731, inclined hole 7310, drain pipe 74, gear 75, turntable 76; Linkage component 8, actuator block 81, limiting surface 811, wedge surface 812, inclined bar 813, wedge block 82, upper support 83, limiting cylinder 831, limiting hole 832; Titanium plate heat exchanger 200; refrigerant inlet 201, heat exchange plate 202; Detailed Implementation The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] The present invention will now be described in detail with reference to the accompanying drawings. The titanium plate heat exchanger for offshore wind power converter stations of the present invention includes a pre-filter 100 disposed at the refrigerant inlet 201 of the titanium plate heat exchanger 200. After passing through the pre-filter 100, the refrigerant enters the heat exchange plate 202 of the titanium plate heat exchanger 200 through the refrigerant inlet 201, thereby cooling the heat exchanger in the heat exchange plate 202. A lower partition 61 is disposed between the lower shell 1 and the middle shell 2 of the pre-filter 100. The middle shell 2 of the pre-filter 100... An upper partition 62 is provided between the housing 2 and the upper housing 3; the filter assembly 6 is installed in the middle housing 2 through the upper partition 62 and the lower partition 61; the filter assembly 6 is provided with a self-cleaning assembly 7, and a rotary actuator 4 and a cylinder 5 are provided on the outside of the upper housing 3 and are pulverizedly connected to the self-cleaning assembly 7; the self-cleaning assembly 7 is driven by the rotary actuator 4 and the cylinder 5 to change the passage of the filter assembly 6, so as to remove the deposits on the filter screen cylinder 63 of the filter assembly 6 and discharge them from the drain port 12 in the lower housing 1. Specifically, this invention is applied to offshore wind power converter stations. Therefore, the refrigerant used by the titanium plate heat exchanger 200 is seawater. Offshore wind power converter stations can easily obtain seawater. However, since seawater contains a large number of plankton and other impurities, the filter component 6 of the pre-filter 100 is easily clogged by impurities in the seawater, affecting the working efficiency of the titanium plate heat exchanger 200.

[0016] like Figure 1-4 As shown, the filter cylinder 63 of the filter assembly 6 is a cylindrical structure with openings at both ends. Refrigerant seawater enters the lower cavity 13 of the lower housing 1 through inlet 11, and then passes through the lower partition 61 from the lower cavity 13 into the interior of the filter cylinder 63 of the filter assembly 6. The refrigerant seawater passes through the cylinder wall of the filter cylinder 63 and is filtered before entering the middle cavity 22 of the middle housing 2. Refrigerant seawater that has not yet passed through the cylinder wall of the filter cylinder 63 continues to rise within the filter cylinder 63 and enters the cavity of the upper housing 3 through the upper partition 62. Multiple filter cylinders 63 are arranged side by side. The self-cleaning component 7 can close the port of part of the filter cylinder 63 located at the upper partition 62 and connect the port of the lower partition 61 to the drain port 12. This allows the high-pressure refrigerant seawater in the middle cavity 22 to pass through the cylinder wall of the filter cylinder 63 closed by the self-cleaning component 7 and enter the filter cylinder 63. This impacts the deposits attached to the inner wall of the filter cylinder 63 and sends the deposits into the drain port 12 through the refrigerant seawater entering the filter cylinder 63 in the opposite direction.

[0017] The self-cleaning assembly 7 is provided with a linkage assembly 8; the cylinder 5 drives the upper rotating frame 72 of the self-cleaning assembly 7 to press down and close the port of the filter cylinder 63 located at the upper partition 62; the upper rotating frame 72 drives the lower rotating frame 73 to move up through the linkage assembly 8 and connects the interface seat 730 of the lower rotating frame 73 with the port of the filter cylinder 63 located at the lower partition 61; the interface seat 730 is connected to the drain port 12 through the drain pipe 74.

[0018] See Figure 4-5 The self-cleaning assembly 7 needs to close part of the filter cylinder 63 so that the refrigerant can enter the middle cavity 22 through part of the unclosed filter cylinder 63 and then enter the partially closed filter cylinder 63 from the middle cavity 22 in the opposite direction, thereby rinsing the deposits on the closed filter cylinder 63. After rinsing, the self-cleaning assembly 7 needs to be moved and the remaining unrinsed filter cylinder 63 needs to be closed. The rotary actuator 4 drives the self-cleaning assembly 7 to rotate so as to close and connect the filter cylinders 63 at different positions.

[0019] Since the titanium plate heat exchanger 200 uses seawater as the refrigerant, and seawater is highly corrosive, the sealing of the filter cylinder 63 by the self-cleaning assembly 7 needs to reduce the use of rubber sealing material. Therefore, after the self-cleaning assembly 7 rotates and changes position, the cylinder 5 is used to drive the upper rotating frame 72 of the self-cleaning assembly 7 to press down and drive the lower rotating frame 73 to move up, so as to achieve the sealing of the end of the filter cylinder 63. The contact parts between the upper rotating frame 72, the lower rotating frame 73 and the port of the filter cylinder 63 can be made of more corrosion-resistant and harder materials, thereby improving the corrosion resistance and durability of the sealing parts.

[0020] The lower partition 61 forms a lower cavity 13 inside the lower shell 1; the lower partition 61 and the upper partition 62 form a middle cavity 22 inside the middle shell 2; the lower port of the filter cylinder 63 of the filter assembly 6 is located in the lower through hole 610 of the lower partition 61; the upper port of the filter cylinder 63 is located in the upper through hole 620 of the upper partition 62; after the refrigerant enters the lower cavity 13 through the inlet 11 of the lower shell 1, it enters the filter cylinder 63 through the lower through hole 610; after the refrigerant is filtered through the cylinder wall of the filter cylinder 63, it enters the middle cavity 22; the filtered refrigerant flows out from the outlet 21 of the middle shell 2 and enters the refrigerant inlet 201 of the titanium plate heat exchanger 200.

[0021] The filter assembly 6 has multiple filter cylinders 63; the upper rotating frame 72 closes the upper port of the unclosed filter cylinder 63, and the lower rotating frame 73 connects the lower port of the filter cylinder 63 to the drain pipe 74; refrigerant enters the middle cavity 22 through the unclosed filter cylinder 63; the refrigerant in the middle cavity 22 enters the interior of the filter cylinder 63 through the cylinder wall of the closed filter cylinder 63 and impacts the deposits on the inner wall of the filter cylinder 63; the deposits are discharged from the drain port 12 after passing through the drain pipe 74.

[0022] See appendix Figure 4 After the lower rotating frame 73 closes the lower port of the filter cylinder 63, it disconnects the pressure from the lower cavity 13 to the filter cylinder 63. At the same time, the filter cylinder 63 is connected to the drain pipe 74, which reduces the pressure inside the filter cylinder 63. As a result, the pressure of the refrigerant in the middle cavity 22 is greater than the pressure inside the closed filter cylinder 63, causing the refrigerant to enter the filter cylinder 63 from the middle cavity 22 in the opposite direction. This impacts the deposits inside the filter cylinder 63 and causes them to detach, and then flows from the drain pipe 74 to the drain port 12.

[0023] The central column 71 of the self-rinsing assembly 7 is rotatably disposed in the middle of the upper partition 62 and the lower partition 61; the lower end of the column body 710 of the central column 71 is provided with a lower rotating frame 73 located below the lower partition 61; the upper end of the column body 710 is provided with an upper rotating frame 72 located above the upper partition 62.

[0024] Specifically, the filter assembly 6 has an even number of filter cylinders 63, the lower rotating frame 73 has N / 2 interface seats, and the upper rotating frame 72 has N / 2 caps 720. The upper rotating frame 72 and the lower rotating frame 73 rotate synchronously with the column 710.

[0025] A gear 75 is provided at the upper end of the central column 71; the gear is rotatably supported on the first bracket 31 on the upper housing 3; the rotary actuator 4 is fixed on the first bracket 31; the output end of the rotary actuator 4 is connected to the gear 75 in a transmission connection.

[0026] A pull rod 731 is provided in the middle of the interface seat 730 of the lower rotating frame 73; the pull rod 731 is inside the column 710 and can slide relative to the column 710 under the drive of the linkage component 8; the upper end of the pull rod 731 is provided in the upper support 83 of the linkage component 8 on the upper part of the column 710; the sliding seat 721 of the upper rotating frame 72 is inserted into the upper support 83; a pressure rod 722 is provided on the sliding seat 721.

[0027] Specifically, the interface seat 730 has a communicating cavity inside, through which the filter cylinder 63 and the drain pipe 74 can be connected. See appendix. Figure 5 The upper end of the interface seat 730 has an opening, which is connected to the lower port of the filter cylinder 63. The interface seat 730 is connected to the drain pipe 74 through a connecting pipe.

[0028] A turntable 76 is provided at the upper end of the gear 75; the turntable 76 is rotatably supported on the second bracket 32 ​​on the upper housing 3; a cylinder 5 is provided on the turntable 76; the movable end of the cylinder 5 is connected to the pressure rod 722.

[0029] A limiting cylinder 831 is provided in the middle of the upper support 83, and the upper end of the pull rod 731 is disposed in the limiting cylinder 831; a limiting hole 832 extending laterally is provided on the limiting cylinder 831; an oblique hole 7310 is provided at the upper end of the pull rod 731; an oblique rod 813 in the middle of the actuating block 81 of the linkage assembly 8 is disposed in the oblique hole 7310; the limiting surfaces 811 at both ends of the actuating block 81 cooperate with the limiting hole 832; a wedge block 82 is provided at the lower part of the sliding seat 721; the wedge block 82 engages with the wedge surfaces 812 at both ends of the actuating block 81; when the sliding seat 721 moves up and down, the wedge block 82 pushes the actuating block 81 to move laterally; when the actuating block 81 moves laterally, it drives the pull rod 731 to move up and down.

[0030] For details, please see the appendix. Figure 6-7 When the sliding block 721 moves downward, the wedge block 82 on the sliding block 721 pushes the actuator block 81 towards... Figure 6 When the actuator block 81 moves to the left, the inclined rod 813 in the middle of the actuator block 81 drives the pull rod 731 to move upward through the inclined hole 7310. That is, through the linkage component 8, while the upper rotating frame 72 presses down and closes the upper port of the filter cylinder 63, the lower rotating frame 73 moves upward and closes the lower port of the filter cylinder 63. With the upper rotating frame 72 and the lower rotating frame 73 that can move up and down, a more corrosion-resistant structure can be selected to seal the upper and lower ports of the filter cylinder 63, replacing the sealing rings on the upper rotating frame 72 and the lower rotating frame 73 in the prior art, and improving the corrosion resistance of the sealing structure.

[0031] A first baffle 611 and a second baffle 612 are respectively provided at two adjacent lower through holes 610 on the lower partition plate 61; when the interface seat 730 of the lower rotating frame 73 rotates to the first baffle 611, the lower rotating frame 73 can close the first part of the filter cylinder 63; when the interface seat 730 rotates to the second baffle 612, the lower rotating frame 73 can close the remaining part of the filter cylinder 63.

[0032] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A titanium plate heat exchanger for an offshore wind power converter station, comprising a pre-filter (100) disposed at the refrigerant inlet (201) of the titanium plate heat exchanger (200), characterized in that: After passing through the pre-filter (100), the refrigerant enters the heat exchange plate (202) of the titanium plate heat exchanger (200) through the refrigerant inlet (201) and cools down the heat exchanger in the heat exchange plate (202); A lower partition (61) is provided between the lower housing (1) and the middle housing (2) of the pre-filter (100). An upper partition plate (62) is provided between the middle housing (2) and the upper housing (3) of the pre-filter (100). The filter assembly (6) is installed in the middle housing (2) via the upper partition (62) and the lower partition (61); The filter assembly (6) is provided with a self-cleaning assembly (7), and the upper housing (3) is provided with a rotary actuator (4) and a cylinder (5) that are connected to the self-cleaning assembly (7) in a transmission. The self-cleaning assembly (7) is driven by the rotary actuator (4) and the cylinder (5) to change the passage of the filter assembly (6) to remove the deposits on the filter screen cylinder (63) of the filter assembly (6) and discharge them from the drain port (12) in the lower housing (1).

2. The titanium plate heat exchanger for offshore wind power converter stations according to claim 1, characterized in that: The self-rinsing component (7) is equipped with a linkage component (8); The cylinder (5) drives the upper rotating frame (72) of the self-cleaning assembly (7) to press down and close the port of the filter cylinder (63) located at the upper partition (62); The upper rotating frame (72) drives the lower rotating frame (73) to move upward through the linkage component (8) and connects the interface seat (730) of the lower rotating frame (73) with the port of the filter cylinder (63) located at the lower partition (61); The interface seat (730) is connected to the drain outlet (12) through the drain pipe (74).

3. The titanium plate heat exchanger for offshore wind power converter stations according to claim 2, characterized in that: The lower partition (61) forms a lower cavity (13) inside the lower housing (1); The lower partition (61) and the upper partition (62) form a central cavity (22) within the middle shell (2); The lower port of the filter cylinder (63) of the filter assembly (6) is disposed in the lower through hole (610) of the lower partition plate (61); The upper port of the filter cylinder (63) is located in the upper through hole (620) of the upper partition plate (62); After the refrigerant enters the lower cavity (13) through the inlet (11) of the lower housing (1), it enters the filter cylinder (63) through the lower through hole (610); The refrigerant enters the middle cavity (22) after being filtered through the wall of the filter cylinder (63). The filtered refrigerant flows out from the outlet (21) of the middle shell (2) and enters the refrigerant inlet (201) of the titanium plate heat exchanger (200).

4. The titanium plate heat exchanger for offshore wind power converter stations according to claim 2, characterized in that: The filter assembly (6) has multiple filter cylinders (63); The upper rotating frame (72) closes the upper port of the unsealed filter cylinder (63), and the lower rotating frame (73) connects the lower port of the filter cylinder (63) to the drain pipe (74); The refrigerant enters the middle cavity (22) through the unsealed filter cylinder (63); The refrigerant in the middle cavity (22) enters the interior of the filter cylinder (63) in the opposite direction through the cylinder wall of the sealed filter cylinder (63) and impacts the deposits on the inner wall of the filter cylinder (63); The attached material is discharged from the drain outlet (12) after passing through the drain pipe (74).

5. The titanium plate heat exchanger for offshore wind power converter stations according to claim 4, characterized in that: The central column (71) of the self-cleaning assembly (7) is rotatably disposed in the middle of the upper partition (62) and the lower partition (61); The lower end of the column (710) of the central column (71) is provided with a lower rotating frame (73) located below the lower partition plate (61). The upper end of the column (710) is provided with an upper rotating frame (72) located above the upper partition (62).

6. The titanium plate heat exchanger for offshore wind power converter stations according to claim 5, characterized in that: A gear (75) is provided at the upper end of the central column (71). The gear is rotatably supported on a first bracket (31) on the upper housing (3); The rotary actuator (4) is fixed to the first bracket (31); The output end of the rotary actuator (4) is connected to the gear (75) for transmission.

7. The titanium plate heat exchanger for offshore wind power converter stations according to claim 5, characterized in that: A pull rod (731) is provided in the middle of the interface seat (730) of the lower rotating frame (73). The pull rod (731) is inside the column (710) and can slide relative to the column (710) under the drive of the linkage assembly (8); The upper end of the pull rod (731) is located in the upper support (83) of the linkage assembly (8) on the upper part of the column (710); The sliding seat (721) of the upper rotating frame (72) is inserted into the upper support (83); A pressure rod (722) is provided on the sliding seat (721).

8. The titanium plate heat exchanger for offshore wind power converter stations according to claim 7, characterized in that: A turntable (76) is provided at the upper end of the gear (75); The turntable (76) is rotatably supported on a second bracket (32) on the upper housing (3); A cylinder (5) is provided on the turntable (76); The movable end of the cylinder (5) is connected to the pressure rod (722).

9. The titanium plate heat exchanger for offshore wind power converter stations according to claim 8, characterized in that: The upper support (83) is provided with a limiting cylinder (831) in the middle, and the upper end of the pull rod (731) is provided in the limiting cylinder (831); The limiting cylinder (831) is provided with a laterally extending limiting hole (832). The upper end of the pull rod (731) is provided with an oblique hole (7310). The inclined rod (813) in the middle of the actuating block (81) of the linkage component (8) is disposed in the inclined hole (7310); The limiting surfaces (811) at both ends of the actuator block (81) cooperate with the limiting holes (832); A wedge (82) is provided at the lower part of the sliding seat (721); The wedge (82) engages with the wedge surfaces (812) at both ends of the actuating block (81); When the sliding seat (721) moves up and down, it pushes the actuator block (81) to move laterally through the wedge block (82); When the actuator block (81) moves laterally, it drives the pull rod (731) to move up and down.

10. The titanium plate heat exchanger for offshore wind power converter stations according to claim 9, characterized in that: The lower partition (61) is provided with a first baffle (611) and a second baffle (612) at two adjacent lower through holes (610). When the interface seat (730) of the lower rotating frame (73) rotates to the first baffle (611), the lower rotating frame (73) can close the filter cylinder (63) of the first part. When the interface seat (730) rotates to the second baffle (612), the lower rotating frame (73) can close the remaining part of the filter cylinder (63).

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