Diaphragm accumulator and cooling system

Abstract

The embodiment of the application provides a diaphragm accumulator and a cooling system, and relates to the technical field of accumulators.The diaphragm accumulator and the cooling system comprise a shell, an air inlet formed in the upper end of the shell, and a liquid inlet formed in the lower end of the shell, the shell is internally provided with a diaphragm, the diaphragm divides the shell into an upper chamber and a lower chamber, the lower chamber is internally connected with a movable filter assembly, the movable filter assembly is attached to the bottom of the inflated diaphragm, the lower end of the diaphragm is connected with a preliminary filter assembly, and the lower end of the preliminary filter assembly extends to the inside of the liquid inlet through the movable filter assembly.The two arc-shaped filter plates are hinged in the liquid inlet, when cold water enters the liquid inlet, the two arc-shaped filter plates are parallelly arranged on one side of the connecting plate, the cold water is filtered, the impurities entering the lower chamber are reduced, the filter frame and the internal filter plate in the lower chamber perform secondary filtration on the cold water, the impurities are further reduced, the impurities are prevented from contacting the diaphragm, and the service life of the diaphragm is prolonged.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and more specifically, to a diaphragm energy storage device and a cooling system. Background Technology

[0002] In wind power generation systems, each wind turbine gearbox, generator, and converter system is equipped with a cooling water circulation system to cool down the gearbox, generator, and converter. The accumulator in this cooling water circulation system is an AAI series bladder accumulator from Akustan. The main function of the accumulator in this system is to assist the power source (replenish the liquid volume to maintain a certain pressure). Statistical analysis revealed that due to factors such as easy damage to the bladder, tank corrosion, and easy pressure leakage of the valve core, the water pressure was insufficient, and the cooling water system could not circulate normally. This affected the cooling effect of the gearbox, generator, and converter, leading to frequent reports of abnormal cooling water pressure and high temperature faults in the wind turbine, which seriously affected the healthy operation of the wind turbine. Therefore, it was replaced with a diaphragm accumulator.

[0003] There are many existing technologies for diaphragm accumulators:

[0004] For example, Chinese Patent Application No. 202221839621.5 discloses a diaphragm accumulator, including a housing. An inflation tube is fixedly connected to the top of the housing, penetrating the housing and communicating with the interior of the housing. An inflation valve is fixedly connected to the end of the inflation tube located outside the housing. This application utilizes the coordinated arrangement of a limiting plate, a sliding tube, a spring, and a sliding rod. When the diaphragm body expands under pressure, it pushes the sliding rod to compress the spring and slide it into the sliding tube until the bottom of the limiting plate is in contact with the top of the sliding rod. The sliding tube limits and supports the limiting plate, preventing it from sliding further down. Simultaneously, the limiting plate and the inner cavity of the housing form a closed cavity, limiting the diaphragm body and preventing further inflation and expansion. This largely avoids the problem of existing accumulators lacking a device to limit the diaphragm, which can easily damage the diaphragm when the internal pressure is too high.

[0005] Therefore, in order to limit the stroke of the diaphragm in the existing technology, a limiting plate is set inside the accumulator. The diaphragm is prevented from moving continuously downward during inflation by contacting the limiting plate. However, since diaphragm accumulators are widely used, when used in the cooling system of generator wind turbines, the cold water in the cooling system is often used for a long time, and some impurities will be generated inside. When cold water with impurities enters the diaphragm accumulator and is retained on the limiting plate, the impurities are difficult to be discharged with the water flow. When the diaphragm comes into contact with the impurities on the limiting plate, the impurities will rub against the diaphragm, causing damage to the diaphragm and easily shortening the service life of the diaphragm accumulator. Summary of the Invention

[0006] This application aims to at least solve the problem in the prior art that when used in the cooling system of a wind turbine generator, the cold water in the cooling system is often used for a long time, and some impurities will be generated inside. When the cold water containing impurities enters the diaphragm accumulator and is retained on the limiting plate, the impurities are difficult to be discharged with the water flow. When the diaphragm comes into contact with the impurities on the limiting plate, the impurities will rub against the diaphragm, causing damage to the diaphragm and easily shortening the service life of the diaphragm accumulator. To this end, this application proposes a diaphragm accumulator and a cooling system.

[0007] To achieve the above objectives, the present invention provides a diaphragm accumulator, comprising a housing, an air inlet at the upper end of the housing, and a liquid inlet at the lower end of the housing. The housing is provided with a diaphragm that divides the housing into an upper chamber and a lower chamber. A movable filter assembly is connected to the lower chamber. The movable filter assembly is attached to the bottom of the inflated diaphragm. A preliminary filter assembly is connected to the lower end of the diaphragm. The lower end of the preliminary filter assembly extends through the movable filter assembly into the liquid inlet.

[0008] Furthermore, a pair of support rods are provided on the upper side of the connecting plate, and a second tooth is provided on one side of the support rod. A gear is rotatably provided inside the liquid inlet, and the second tooth meshes with one side of the gear. A pair of connecting rods are connected to the lower side of the diaphragm, and a first tooth is provided on one side of the connecting rod, which meshes with the other side of the gear.

[0009] Furthermore, the arc-shaped filter plate has a discharge port at one end near the inner wall of the liquid inlet, which is used to discharge impurities on the upper side of the arc-shaped filter plate.

[0010] Furthermore, an inclined plate is provided on the lower side of the discharge port to prevent impurities from flowing back from the lower side of the discharge port.

[0011] Furthermore, the movable filter assembly includes a filter frame located in the lower chamber, an internal filter plate is provided on one side of the filter frame, and the filter frame and the internal filter plate form an annular filter surface after being unfolded. The lower sides of the filter frame and the internal filter plate are respectively connected to two elastic elements, and the two elastic elements are respectively connected to the inner wall of the lower chamber.

[0012] Furthermore, the filter frame has grooves on both sides, and the side of the internal filter plate slides in the grooves.

[0013] Furthermore, the interior of the chute is provided with an elastic element two, one end of which is connected to the internal filter plate.

[0014] Furthermore, a through groove is provided on one side of the filter frame and the internal filter plate, and the connecting rod is located in the through groove.

[0015] Furthermore, on the other hand, the present invention also provides a cooling system for a diaphragm accumulator, comprising the diaphragm accumulator described in any one of the above, including a water storage module, a water pumping module, a cooling module and an energy storage module;

[0016] The water storage module is used to store cold water for cooling.

[0017] The pumping module is used to circulate the cold water inside the water storage module;

[0018] The cooling module is used to receive the cold water pumped out by the pumping module and use the cold water to cool down the gearbox, generator and converter.

[0019] The energy storage module is used to absorb pressure fluctuations and impact forces in the cooling system during the cooling cycle, thereby balancing the pressure of the cooling system.

[0020] 1. The beneficial effects of this application are: by hinged two arc-shaped filter plates inside the liquid inlet, when cold water enters the liquid inlet, the two arc-shaped filter plates are parallel to each other on one side of the connecting plate to filter the incoming cold water, reducing the amount of impurities entering the lower chamber. At the same time, the filter frame and internal filter plates inside the lower chamber perform secondary filtration of the cold water, further reducing the amount of impurities entering, avoiding contact between impurities and the diaphragm, and extending the service life of the diaphragm.

[0021] 2. The beneficial effects of this application are: when the gas passes inside the diaphragm, the diaphragm moves downward, and the lower end of the diaphragm contacts the filter frame and the internal filter plate, squeezing the internal filter frame and the internal filter plate downward, so that the internal filter plate enters the filter frame when sliding downward, thereby making the size of the entire moving filter assembly conform to the size of the lower chamber, and limiting the descent position of the diaphragm by the filter frame and the internal filter plate, avoiding damage caused by excessive internal pressure of the diaphragm.

[0022] 3. The beneficial effects of this application are: when the diaphragm moves downward due to inflation, it moves downward along with the connecting rod. By using the meshing of tooth one and gear, the gear meshes with tooth two, which in turn causes the support rod to lift the arc-shaped filter plate upward. When the two arc-shaped filter plates are kept tilted, the smaller impurities retained on the arc-shaped filter plates are made to roll toward the discharge port and be discharged, further preventing impurities from entering the lower chamber.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure according to an embodiment of this application;

[0026] Figure 2 This is a cross-sectional plan view of the overall structure when liquid enters according to an embodiment of this application;

[0027] Figure 3 This is a three-dimensional cross-sectional view of the overall structure when liquid enters according to an embodiment of this application;

[0028] Figure 4 This is a cross-sectional plan view of the overall structure when gas enters according to an embodiment of this application;

[0029] Figure 5 This is a three-dimensional cross-sectional view of the overall structure when gas enters according to an embodiment of this application;

[0030] Figure 6 According to the embodiments of this application Figure 5 A schematic diagram of the structure at point A;

[0031] Figure 7 This is a partially disassembled schematic diagram of the filter frame and internal filter plate according to an embodiment of this application;

[0032] Figure 8 This is a schematic diagram of the arc-shaped filter plate structure according to an embodiment of this application;

[0033] Figure 9 This is a flowchart of a cooling system according to an embodiment of this application.

[0034] icon:

[0035] 1. Outer shell; 11. Air inlet; 12. Liquid inlet; 13. Upper chamber; 14. Lower chamber; 15. Diaphragm;

[0036] 2. Movable filter assembly; 21. Filter frame; 22. Internal filter plate; 23. Elastic component one; 24. Through groove; 25. Slide groove; 26. Elastic component two;

[0037] 3. Preliminary filtration assembly; 31. Connecting rod; 311. Tooth 1; 32. Connecting plate; 33. Support rod; 331. Tooth 2; 34. Arc-shaped filter plate; 35. Gear; 36. Discharge port; 37. Inclined plate. Detailed Implementation

[0038] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] The following description, with reference to the accompanying drawings, depicts a diaphragm accumulator and cooling system according to an embodiment of this application.

[0047] like Figures 1-9 As shown, a diaphragm accumulator according to an embodiment of this application includes a housing 1, an air inlet 11 at the upper end of the housing 1 and a liquid inlet 12 at the lower end of the housing 1. A diaphragm 15 is provided inside the housing 1, which divides the housing 1 into an upper chamber 13 and a lower chamber 14.

[0048] like Figures 2 to 3 As shown, a movable filter assembly 2 is connected inside the lower chamber 14, and the movable filter assembly 2 is attached to the bottom of the inflated diaphragm 15.

[0049] Specifically, the movable filter assembly 2 is provided with a filter frame 21 located in the lower chamber 14. An internal filter plate 22 is provided on one side of the filter frame 21. When liquid enters, the filter frame 21 and the internal filter plate 22 remain in an extended state and form an annular filter surface to filter impurities in the liquid. At the same time, the lower sides of the filter frame 21 and the internal filter plate 22 are respectively connected to two elastic members 23. The two elastic members 23 are respectively connected to the inner wall of the lower chamber 14. The elastic members 23 are preferably metal springs, which restrict the position of the internal filter plate 22 and the filter frame 21. When the elastic members 23 are not squeezed, the internal filter plate 22 and the filter frame 21 are positioned in a suitable position in the lower chamber 14 to filter impurities and prevent impurities from contacting the diaphragm 15.

[0050] When the diaphragm 15 is filled with gas and moves downward, the lower end of the diaphragm 15 adheres to the internal filter plate 22 and the filter frame 21, pressing the internal filter plate 22 and the filter frame 21 downward. In order for the internal filter plate 22 and the filter frame 21 to move with the diaphragm 15, grooves 25 are provided on the two side frames of the filter frame 21. The sides of the internal filter plate 22 slide in the grooves 25. At the same time, an elastic element 26 is provided inside the grooves 25. The elastic element 26 is preferably a metal spring. One end of the elastic element 26 is connected to the internal filter plate 22. Since the inner wall of the lower chamber 14 is The downward-contracting arc-shaped structure means that when the internal filter plate 22 and filter frame 21 are squeezed downwards, the filter frame 21 and internal filter plate 22 not only squeeze the elastic element 23 downwards, but also the inner wall of the lower chamber 14 squeezes the internal filter plate 22 and filter frame 21, causing the internal filter plate 22 to slide into the slide groove 25 and squeeze the elastic element 26, reducing the overall volume of the internal filter plate 22 and filter frame 21 to fit the size of the lower chamber 14. When the internal filter plate 22 and filter frame 21 can no longer descend, the descent position of the diaphragm 15 is restricted to prevent the diaphragm 15 from rupturing due to excessive pressure.

[0051] Furthermore, the lower end of the diaphragm 15 is connected to a preliminary filter assembly 3, and the lower end of the preliminary filter assembly 3 extends through the movable filter assembly 2 into the inlet 12.

[0052] like Figure 3 As shown, specifically, the preliminary filtration assembly 3 includes a pair of arc-shaped filter plates 34 located inside the liquid inlet 12. The pair of arc-shaped filter plates 34 are respectively hinged to the inner walls on both sides of the liquid inlet 12, and the other side of the two arc-shaped filter plates 34 is respectively hinged to the two sides of the connecting plate 32. When the diaphragm 15 is not filled with gas, the diaphragm 15 is located in the upper chamber 13. At this time, the two arc-shaped filter plates 34 are respectively parallel to the two sides of the connecting plate 32, so that the two arc-shaped filter plates 34 and the connecting plate 32 are on the same horizontal plane, forming a plane for filtering impurities in cold water, reducing the entry of impurities into the lower chamber 14.

[0053] like Figure 9 As shown, on the other hand, the present invention also provides a cooling system for a diaphragm accumulator, including a water storage module, a water pumping module, a cooling module and an energy storage module;

[0054] The water storage module is used to store cold water for cooling. The water storage module can use a water tank to store the cold water.

[0055] The pumping module is used to circulate the cold water inside the water storage module;

[0056] The water pumping module uses a circulating pump. The inlet of the circulating pump is connected to the outlet of the water tank through a pipe, and the outlet of the circulating pump is connected to the inlet of the cooler through a pipe. The connection method is a threaded joint or flange connection. The circulating pump draws cooling water from the water tank and delivers it to the cooler through the pipe. The cooler circulates and cools the gearbox, generator and converter.

[0057] The cooling module receives the cold water pumped out by the pumping module and uses it to cool the gearbox, generator, and converter. The cooling module uses a cooler. After the cooling water enters the gearbox, generator, and converter system, it passes through the cooler and carries away the heat generated by the components by contacting the air. In the cooler, the water exchanges heat with the air, which lowers the temperature of the cooling water. The cooled water then returns to the water tank through pipes and flows back to the starting point of the cooling system with the help of a circulating pump. This cycle continues, constantly removing heat and keeping the operating temperature of the gearbox, generator, and converter system within an acceptable range.

[0058] The energy storage module is used to absorb pressure fluctuations and impacts in the cooling system during the cooling cycle, thereby balancing the pressure of the cooling system.

[0059] The energy storage module uses a diaphragm accumulator, which is installed on the pipe connected to the outlet of the circulating pump. During the entire circulation process, the diaphragm accumulator plays a role in balancing pressure and buffering shocks. By absorbing pressure fluctuations and shocks in the system, the diaphragm accumulator reduces the impact on the system and maintains the stable operation of the system.

[0060] Figures 4 to 8 As can be seen from the above embodiments, when the two arc-shaped filter plates 34 filter the cooling water, some smaller impurities will pass through the arc-shaped filter plates 34 and enter the lower chamber 14 on the lower side of the internal filter plate 22. When no more liquid enters, the impurities will fall on the arc-shaped filter plates 34. At this time, the impurities need to be removed. Therefore, the above embodiments are improved to show the second embodiment of the present invention.

[0061] A pair of support rods 33 are provided on the upper side of the connecting plate 32. One side of the support rod 33 is provided with a second tooth 331. In order to allow the support rod 33 to move upward through the second tooth 331, a gear 35 is rotatably provided inside the liquid inlet 12. In order to keep the rotation of the gear 35 balanced, a pair of connecting rods 31 are connected to the lower side of the diaphragm 15. One side of the connecting rod 31 is provided with a first tooth 311. Therefore, when the diaphragm 15 moves downward due to air inflation, it moves downward along with the connecting rod 31. The first tooth 311 meshes with one side of the gear 35, so that the second tooth 331 meshes with the other side of the gear 35. This causes the support rod 33 to pull the connecting plate 32 upward, so that the two arc-shaped filter plates 34 are tilted. This allows the impurities falling on the arc-shaped filter plates 34 to slide to one side of the arc-shaped filter plates 34 by their own gravity.

[0062] Furthermore, a discharge port 36 is provided at one end of the arc-shaped filter plate 34 near the inner wall of the liquid inlet 12. Impurities are discharged through the discharge port 36. At the same time, an inclined plate 37 is provided on the lower side of the discharge port 36 to prevent impurities from flowing back from the lower side of the discharge port 36.

[0063] Furthermore, a through groove 24 is provided on one side of the filter frame 21 and the internal filter plate 22. The connecting rod 31 is located in the through groove 24 and is in contact with the inner wall of the through groove 24. The through groove 24 limits the connecting rod 31 to prevent the diaphragm 15 from shaking when impacted by water flow, thus affecting the meshing of the connecting rod 31 and the gear 35.

[0064] It is worth noting that since the arc-shaped filter plate 34 is hinged to the inner wall of the connecting plate 32 and the liquid inlet 12, when the liquid enters the liquid inlet 12, the pressure of the water flow will push the two arc-shaped filter plates 34 upward. At this time, the arc-shaped filter plates 34 will also tilt, which can also discharge impurities. However, if there is residual air in the diaphragm 15, the diaphragm 15 will press down on the connecting rod 31, causing the support rod 33 to remain stable. At this time, the arc-shaped filter plate 34 will not be impacted by the water flow into a tilted state, or will not tilt at a large angle. Therefore, impurities can be cleaned through the second embodiment.

[0065] Workflow: When liquid enters the lower chamber 14 through the inlet 12, it undergoes initial filtration through the arc-shaped filter plate 34. The filter frame 21 and the internal filter plate 22 then perform secondary filtration, reducing the contact between impurities and the diaphragm 15. When gas enters the upper chamber 13, the diaphragm 15 fills with gas and expands downwards. The lower end of the diaphragm 15 adheres to the internal filter plate 22 and the filter frame 21, compressing them and pressing the elastic element 23. As the internal filter plate 22 and the filter frame 21 slide downwards, the internal filter plate 22 slides into the groove 25, thereby... The overall dimensions of the internal filter plate 22 and the filter frame 21 are made to match the dimensions of the lower chamber 14. At the same time, the internal filter plate 22 and the filter frame 21 restrict the descent position of the diaphragm 15 to prevent the diaphragm 15 from rupturing due to excessive pressure. When the diaphragm 15 descends, it causes the first tooth 311 on the connecting rod 31 to mesh with the gear 35, which in turn causes the second tooth 331 on the support rod 33 to mesh with the other side of the gear 35. The support rod 33 pulls the connecting plate 32 upward, causing the two arc-shaped filter plates 34 to tilt. The impurities on the arc-shaped filter plates 34 roll to the discharge port 36 by their own weight and are discharged.

[0066] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0067] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A diaphragm accumulator, comprising a housing (1), an air inlet (11) at the upper end of the housing (1), and a liquid inlet (12) at the lower end of the housing (1), wherein a diaphragm (15) is provided inside the housing (1), the diaphragm (15) dividing the housing (1) into an upper chamber (13) and a lower chamber (14), characterized in that: The lower chamber (14) is connected to a movable filter assembly (2), which is attached to the bottom of the inflated diaphragm (15). The lower end of the diaphragm (15) is connected to a preliminary filter assembly (3), which extends through the movable filter assembly (2) to the inside of the liquid inlet (12). The preliminary filtration assembly (3) includes a pair of arc-shaped filter plates (34) located inside the liquid inlet (12). The pair of arc-shaped filter plates (34) are respectively hinged to the inner walls on both sides of the liquid inlet (12), and the other side of the two arc-shaped filter plates (34) is respectively hinged to the two sides of the connecting plate (32). The movable filter assembly (2) includes a filter frame (21) located in the lower chamber (14). An internal filter plate (22) is provided on one side of the filter frame (21). The filter frame (21) and the internal filter plate (22) form an annular filter surface after being unfolded. The lower sides of the filter frame (21) and the internal filter plate (22) are respectively connected to two elastic elements (23). The two elastic elements (23) are respectively connected to the inner wall of the lower chamber (14). The filter frame (21) has grooves (25) on both sides of its side frame, and the side of the internal filter plate (22) slides in the grooves (25); The groove (25) is provided with an elastic element two (26) inside, and one end of the elastic element two (26) is connected to the internal filter plate (22).

2. The diaphragm accumulator according to claim 1, characterized in that: The upper side of the connecting plate (32) is provided with a pair of support rods (33), one side of the support rod (33) is provided with a second tooth (331), the inside of the liquid inlet (12) is provided with a gear (35), the second tooth (331) meshes with one side of the gear (35), the lower side of the diaphragm (15) is connected with a pair of connecting rods (31), one side of the connecting rod (31) is provided with a first tooth (311), the first tooth (311) meshes with the other side of the gear (35).

3. The diaphragm accumulator according to claim 2, characterized in that: The arc-shaped filter plate (34) has a discharge port (36) at one end near the inner wall of the liquid inlet (12), and the discharge port (36) is used to discharge impurities on the upper side of the arc-shaped filter plate (34).

4. The diaphragm accumulator according to claim 3, characterized in that: The discharge port (36) is provided with an inclined plate (37) on the lower side, which is used to prevent impurities from flowing back from the lower side of the discharge port (36).

5. The diaphragm accumulator according to claim 2, characterized in that: The filter frame (21) and the inner filter plate (22) have a through groove (24) on one side, and the connecting rod (31) is located in the through groove (24).

6. A cooling system for implementing a diaphragm accumulator as described in any one of claims 1-5, characterized in that: It includes a water storage module, a pumping module, a cooling module, and an energy storage module; The water storage module is used to store cold water for cooling. The pumping module is used to circulate the cold water inside the water storage module; The cooling module is used to receive the cold water pumped out by the pumping module and use the cold water to cool down the gearbox, generator and converter. The energy storage module is used to absorb pressure fluctuations and impact forces in the cooling system during the cooling cycle, thereby balancing the pressure of the cooling system.

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