Protection device of submersible pump, seawater cooling system of wind turbine generator and wind turbine generator

Abstract

This disclosure provides a protective device for a submersible pump, a seawater cooling system for a wind turbine, and a wind turbine generator set. The protective device for the submersible pump includes a frame, a protective sleeve, and a positioning guide. The protective sleeve is used to wrap around the submersible pump and is detachably connected to the frame. The positioning guide is connected to the frame and has a guide hole through which the protective sleeve passes. One of the positioning guide and the protective sleeve has a first guide portion, and the other has a second guide portion that matches the first guide portion. This disclosure, through the cooperation of the first and second guide portions, enables the protective sleeve to move accurately along a predetermined path during lowering or raising, reducing the lateral thrust of seawater on the protective sleeve, simplifying the underwater installation of the submersible pump, and making it possible to use seawater for cooling the wind turbine generator set.

Description

Technical Field

[0001] This disclosure pertains to the field of wind power generation technology, and particularly relates to a protection device for a submersible pump, a seawater cooling system for a wind turbine, and a wind turbine generator set. Background Technology

[0002] With the application of high-power units, the heat generated per unit time during the operation of wind turbine generators will also increase. In order for the units to operate normally, a heat dissipation system is needed to dissipate heat.

[0003] Current cooling systems are typically air-water cooling systems, but due to limited cabin space and excessive heat load, air-water cooling systems are unable to meet the heat dissipation requirements.

[0004] Seawater, as a natural cold source, can be used to cool wind turbine generators by utilizing its low temperature to reduce the temperature of the cooling medium. However, due to the influence of various factors such as wind, tides, and seawater depth, waves will form in the seawater. Submersible pumps will be subjected to the lateral load of the waves and oscillate in the seawater, which will lead to positioning difficulties. Summary of the Invention

[0005] The main objective of this disclosure is to provide a protection device for a submersible pump, a seawater cooling system for a wind turbine, and a wind turbine generator set to achieve reliable positioning of the submersible pump.

[0006] To achieve the above objectives, this disclosure provides the following technical solution:

[0007] In one aspect, this disclosure provides a protective device for a submersible pump, applicable to submersible pumps. The protective device includes a frame, a protective sleeve, and a positioning guide. The protective sleeve is used to enclose the submersible pump and is detachably connected to the frame. The positioning guide is connected to the frame and has a guide hole through which the protective sleeve passes. One of the positioning guide and the protective sleeve is provided with a first guide portion, and the other is provided with a second guide portion that matches the first guide portion. This disclosure, through the cooperation of the first and second guide portions, enables the protective sleeve to move accurately along a predetermined path during lowering or raising, reducing the lateral thrust of seawater on the protective sleeve, simplifying the underwater installation of the submersible pump, and making it possible to use seawater for cooling wind turbine generators. Furthermore, this disclosure, through the cooperation of the first and second guide portions, reduces the difficulty of positioning the submersible pump.

[0008] In one exemplary embodiment of this disclosure, the first guide portion includes a guide groove, and the second guide portion includes a guide protrusion.

[0009] Optionally, the protective sleeve body includes protective sleeve units connected in sequence, with adjacent protective sleeve units connected by end flanges. The end flanges are provided with at least two guide grooves spaced apart along their circumference. The positioning guide includes a positioning ring and a guide protrusion, with the guide protrusion protruding from the inner edge of the positioning ring towards its center. This disclosure, by providing guide grooves on the end flanges, satisfies the positioning and guiding requirements of the protective sleeve body while allowing the positioning guide to pass smoothly, thus avoiding motion interference between the positioning guide and the end flange during the movement of the protective sleeve body.

[0010] Specifically, the bottom of the guide groove is recessed into the outer peripheral wall of the protective sleeve unit. This design ensures that the guide protrusion of the positioning guide remains in real-time position with the protective sleeve body while avoiding obstruction of movement to the end flange.

[0011] Furthermore, the positioning guide also includes guide wings that extend obliquely outward from the guide protrusion; and / or, each guide protrusion is provided with two guide wings, which are respectively disposed on both sides of the positioning ring along its axial direction. This arrangement allows the guide wings to guide the protective sleeve into the guide through hole, thereby improving the reliability of the positioning guide.

[0012] In another exemplary embodiment of this disclosure, a filter screen is provided at the bottom of the protective sleeve; and / or, a filter hole is provided on the side wall of the protective sleeve, and the inner cavity of the protective sleeve can communicate with the outside through the filter hole.

[0013] Optionally, the protective device for the submersible pump further includes a protective housing, which is cylindrical and vertically connected to the frame, with the protective sleeve disposed within the inner cavity of the protective housing. This configuration, by providing a protective housing around the outer periphery of the protective sleeve, further protects the submersible pump and improves its ability to resist lateral impacts from ocean waves.

[0014] Specifically, one end of the protective shell has an arc-shaped sidewall and the other end has a V-shaped sidewall. The opening of the V-shaped sidewall and the opening of the arc-shaped sidewall are connected to form a continuously extending annular structure in the circumferential direction, and the connection between the V-shaped sidewall and the arc-shaped sidewall is smoothly transitioned.

[0015] Furthermore, the arc-shaped sidewall includes a U-shaped sidewall or a C-shaped sidewall; and / or, the bottom or sidewall of the protective housing is provided with a water inlet hole.

[0016] In another exemplary embodiment of this disclosure, the protective device for the submersible pump further includes a connecting elbow, the connecting elbow including a first flange and a second flange spaced apart in a vertical direction, the first flange being connected to the top of the protective sleeve, and the second flange being located below the first flange and used to connect to the outlet pipe of the submersible pump.

[0017] In another aspect, this disclosure provides a seawater cooling system for a wind turbine, the seawater cooling system for the wind turbine including a submersible pump and a protection device for the submersible pump as described above.

[0018] In one exemplary embodiment of this disclosure, the seawater cooling system of the wind turbine further includes a plurality of guide rollers, which are arranged circumferentially outside the submersible pump, and the distance between the guide rollers and the protective sleeve is adjustable; and / or, the seawater cooling system of the wind turbine further includes a marine organism protection device connected to the outside of the submersible pump.

[0019] In another aspect, this disclosure provides a wind turbine generator set, the wind turbine generator set including the seawater cooling system for wind turbine generator sets as described above.

[0020] An exemplary embodiment of this disclosure includes a jacketed wind turbine foundation, the jacketed wind turbine foundation including a landing platform, and the frame fixed to the landing platform. Attached Figure Description

[0021] The above and / or other objects and advantages of this disclosure will become clearer from the following description of embodiments taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 A partial structural schematic diagram of a wind turbine generator set provided for an exemplary embodiment of this disclosure.

[0023] Figure 2 for Figure 1 A longitudinal sectional view of the protection device of the submersible pump.

[0024] Figure 3 for Figure 1 The structural diagram shows the connection between the protective housing and the frame.

[0025] Figure 4 for Figure 1 Diagram showing the fit between the guide component and the end flange.

[0026] Figure 5 for Figure 4 The structural diagram of the guide component.

[0027] Figure 6 for Figure 1 The structural diagram of the connecting elbow in the middle.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Frame; 2. Submersible pump;

[0030] 3. Water outlet pipe; 4. Protective casing;

[0031] 5. Positioning guide; 6. Protective sleeve;

[0032] 7. Guide rollers; 8. Connecting elbows;

[0033] 9. Filter screen; 10. Dosing tube;

[0034] 41. Arc-shaped sidewall; 42. V-shaped sidewall;

[0035] 51. Positioning ring; 52. Guide protrusion;

[0036] 53. Guide wing; 61. Protective sleeve unit;

[0037] 62. End flange; 63. Guide groove;

[0038] 81. First flange; 82. Second flange;

[0039] 100. Protective devices for submersible pumps; 101. Logging platform;

[0040] 102. Jacket-type wind turbine foundation. Detailed Implementation

[0041] Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be construed that the embodiments of this disclosure are limited to those described herein. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted.

[0042] Reference Figure 1 This disclosure provides a wind turbine generator set, particularly suitable for offshore wind turbine generator sets, which includes a seawater cooling system to cool the electrical components inside the generator set.

[0043] The seawater cooling system includes a submersible pump and a heat exchanger. The submersible pump drives coolant into the heat exchanger and removes heat from the electrical components. For example, the coolant can be seawater, but is not limited to this. Specifically, the submersible pump can be located in seawater, and when the pump is activated, it can draw seawater into the heat exchanger, but is not limited to this.

[0044] Due to the influence of various factors such as wind, tides, and seawater depth, waves will form in the seawater. During the process of lowering the submersible pump into the seawater or raising the submersible pump, the submersible pump will be subjected to the lateral load of the waves and swing in the seawater, which will lead to positioning difficulties.

[0045] Reference Figure 1 and Figure 2 This disclosure provides a protective device 100 for a submersible pump, including a frame 1, a protective sleeve 6, and a positioning guide 5. The protective device is suitable for submersible pumps. The protective sleeve 6 is used to wrap around the submersible pump and is detachably connected to the frame 1. The positioning guide 5 is connected to the frame 1 and has a guide hole through which the protective sleeve 6 passes. One of the positioning guide 5 and the protective sleeve 6 is provided with a first guide portion, and the other is provided with a second guide portion that matches the first guide portion.

[0046] Specifically, the frame 1 can be fixedly installed at a predetermined position below sea level, for example, but not limited to, the frame 1 can be fixedly connected to the foundation of the wind turbine generator set. In this embodiment, the foundation of the wind turbine generator set can be a jacket-type wind turbine foundation 102 or a monopile foundation. This embodiment takes the jacket-type wind turbine foundation 102 as an example for explanation, and the frame 1 is fixedly connected to the jacket-type wind turbine foundation 102.

[0047] As an example, the jacket-type wind turbine foundation 102 includes a landing platform 101 to which the frame 1 can be fixedly connected, but is not limited to.

[0048] The protective sleeve 6 can wrap around the submersible pump to prevent it from rubbing against or bumping against other structures during lifting or lowering, thus protecting the pump. As an example, the protective sleeve 6 can be made of metal, such as, but not limited to, composite materials, duplex stainless steel, or titanium alloys. The protective sleeve 6 can also be a thin tube to reduce its weight.

[0049] To prevent marine organisms from adhering to the submersible pump 2 and affecting its normal operation, the protective sleeve 6 provided in this disclosure is equipped with a filter screen 9 to isolate marine organisms outside the protective sleeve 6. As an example, the filter screen 9 can be set at the bottom of the protective sleeve 6, and if necessary, the filter screen 9 can also be set on the side wall of the protective sleeve 6 (not shown in the figure), but is not limited thereto.

[0050] In this embodiment, the filter screen 9 is made of metal, for example, but not limited to, the filter screen 9 can be made of copper plate or copper mesh. Of course, in order to reduce the cost of the filter screen 9, the filter screen 9 can be made of ordinary metal, and a copper coating can be provided on the outer surface of the filter screen 9. All of these are within the protection scope of this disclosure.

[0051] To reduce the cost of the protective sleeve 6, the filter 9 can be formed separately from the protective sleeve 6 and then assembled and connected. For example, but not limited to, the filter 9 can be made of different materials than the protective sleeve 6.

[0052] As needed, the protective sleeve 6 can also be formed with a bottom seal, and filter holes are provided on the protective sleeve 6 and the bottom seal. The inner cavity of the protective sleeve 6 can be connected to the outside through the filter holes. In this way, the area with filter holes can be formed as a filter screen, and seawater can enter the inner cavity of the protective sleeve 6 through the filter screen, all of which are within the protection scope of this disclosure.

[0053] Continue to refer to Figure 2 and Figure 3 The positioning guide 5 can be connected to the frame 1. During the lifting or lowering of the protective sleeve 6, it is used to guide the protective sleeve 6 to avoid the protective sleeve 6 swinging due to lateral thrust and making it difficult to place in the predetermined position. On the other hand, by setting the positioning guide 5, the protective sleeve 6 can be prevented from swinging significantly and can resist lateral thrust to a certain extent, thereby improving the reliability of the submersible pump.

[0054] To improve the reliability of the submersible pump's protection device, one of the positioning guide 5 and the protective sleeve 6 is provided with a first guide portion, and the other is provided with a second guide portion that matches the first guide portion. The first guide portion and / or the second guide portion extend along the extension direction of the protective sleeve. This disclosure enables the protective sleeve 6 to move accurately along a predetermined movement path during lowering or lifting, thereby reducing the lateral thrust of seawater on the protective sleeve 6.

[0055] As an example, this embodiment will be described with the first guide portion disposed on the protective sleeve 6 and the second guide portion disposed on the positioning guide 5. As needed, the first guide portion can be disposed at any part of the protective sleeve 6, for example, but not limited to, it can be disposed on the side wall of the protective sleeve 6, or it can be disposed in the middle or end of the protective sleeve 6 along its extension direction, but it is not limited thereto.

[0056] As an example, the illustration is given with the first guide portion including a guide groove and the second guide portion including a guide protrusion, but this is not a limitation.

[0057] In this embodiment, the submersible pump is typically installed at a predetermined depth below sea level. To adapt to different depth requirements, the protective sleeve 6 typically includes multiple protective sleeve units 61, which are stacked vertically to form a protective sleeve 6 with a predetermined length. To improve the connection reliability between adjacent protective sleeve units 61, end flanges 62 are provided at the ends of the protective sleeve units 61, and adjacent protective sleeve units 61 are connected through the end flanges 62.

[0058] Reference Figure 4 and Figure 5 As an example, the end flange 62 of the protective sleeve unit 61 is provided as an outer flange, and at least two guide grooves 63 are provided circumferentially spaced on the end flange 62. The positioning guide 5 includes a positioning ring 51, and a guide protrusion 52 is provided on the inner edge of the positioning ring 51 protruding toward the center of the positioning ring 51.

[0059] During the lowering or raising of the protective sleeve 6, the guide groove 63 of the end flange 62 can pass through the guide protrusion 52 of the positioning guide 5. This arrangement of the positioning guide 5 can guide the protective sleeve 6 and allow the end flange to pass smoothly through the positioning guide 5, thereby enabling the protective sleeve 6 to be lowered or raised smoothly.

[0060] Referring again to the attached drawings, the positioning guide 5 also includes a guide wing 53, which extends obliquely outward from the guide protrusion 52 to guide the protective sleeve 6 into the guide through hole.

[0061] As an example, each guide protrusion 52 is provided with two guide wings 53, which are respectively provided on both sides of the positioning ring 51 along its axial direction.

[0062] The guide wing 53 can be set on one side of the positioning ring 51, for example, but not limited to, the guide wing 53 is set above the positioning ring 51, extending upward and outward from the guide protrusion 52. During the lowering of the protective sleeve 6, the protective sleeve 6 may wobble under the action of the lateral thrust of seawater. The guide wing 53 can guide it to the guide through hole, so that the protective sleeve 6 can be accurately reset, thereby improving the disassembly and assembly efficiency of the protective sleeve 6.

[0063] As needed, each guide protrusion 52 is provided with two guide wings 53. The two guide wings 53 are respectively located on both sides of the positioning ring 51 along its axial direction. The upper guide wing 53 extends obliquely upward from the guide protrusion 52, and the lower guide wing 53 extends obliquely downward from the guide protrusion 52. This arrangement ensures that the protective sleeve 6 is accurately guided into the guide through hole of the positioning guide 5 during the lowering process, and also maintains accurate guidance of the protective sleeve 6 during the lifting process.

[0064] In this embodiment, the positioning guide 5 includes four guide protrusions 52. The four guide protrusions 52 are evenly arranged along the circumference of the positioning guide 5, but this is not a limitation. As needed, the number of guide protrusions 52 can be three or five, etc.

[0065] Furthermore, the bottom of the guide groove 63 of the protective sleeve body 6 is recessed into the outer peripheral wall of the protective sleeve unit 61. With this configuration, when the protective sleeve unit 61 moves along the positioning guide 5, the guide protrusion 52 of the positioning guide 5 guides the outer peripheral wall of the protective sleeve unit 61 to position the protective sleeve unit 61. When the end flange 62 moves to the position of the positioning ring 51, the guide groove 63 of the end flange 62 can smoothly pass through the positioning guide 5, but this is not a limitation.

[0066] To improve the service life of the protective sleeve 6, a wear-resistant layer is provided on the outer peripheral wall of the protective sleeve unit 61, but this is not the only option.

[0067] In order to improve the service life of the protective sleeve 6 and prevent the protective sleeve 6 from being scratched by the positioning guide 5 during movement, the inner edge of the positioning guide 5 is rounded, and the positioning guide 5 extends smoothly along its circumference, but is not limited thereto.

[0068] As an example, there are two or more positioning guides 5, which can be arranged at intervals along the vertical direction on the frame 1.

[0069] In this embodiment, the positioning guide 5 and the protective sleeve 6 can be spaced apart. For example, but not limited to, the distance between the outer peripheral wall of the positioning guide 5 and the protective sleeve 6 can be 15-20mm, but is not limited thereto.

[0070] This embodiment uses a guide groove 63 disposed on the protective sleeve 6 and a guide protrusion 52 disposed on the positioning guide 5 as an example for illustration, but it is not limited thereto. As needed, a guide protrusion can be disposed on the protective sleeve 6, and the guide protrusion can extend continuously along the extension direction of the protective sleeve 6. In this case, a corresponding guide groove can be disposed on the positioning guide 5, so that the guide groove can continuously guide the guide protrusion. Alternatively, in an optional embodiment, the guide protrusion can also be spaced apart along the extension direction of the protective sleeve 6 to reduce the material used in the protective sleeve 6, thereby reducing the weight of the protective sleeve 6.

[0071] This embodiment uses the example of a guide groove 63 being provided on an end flange 62. In this way, the guide groove 63 can smoothly pass through the positioning guide 5 to realize the lifting or lowering of the protective sleeve 6, and at the same time, it can cooperate with the guide protrusion 52 of the positioning guide 5 for guidance.

[0072] This disclosure simplifies the manufacturing process and reduces the manufacturing cost of the protective sleeve 6 by providing a guide groove 63 on the end flange 62, rather than providing a guide groove or guide protrusion on the protective sleeve unit 61.

[0073] Continue to refer to Figures 2 to 4To improve the service life of the submersible pump 2, the protective device of the submersible pump may also include a protective housing 4. The protective housing 4 is cylindrical and connected to the frame 1 in a vertical direction, and the protective sleeve 6 is disposed in the inner cavity of the protective housing 4. The bottom or side wall of the protective housing 4 is provided with a water inlet hole, through which seawater can enter the inner cavity of the protective housing 4.

[0074] The protective housing 4 can be made of stainless steel, which has good structural strength and can effectively resist the lateral thrust of seawater, thereby reducing the lateral impact of waves on the submersible pump 2 and reducing the oscillation amplitude of the submersible pump 2.

[0075] To further reduce the lateral impact of waves, the protective shell 4 has an arc-shaped sidewall 41 at one end and a V-shaped sidewall 42 at the other. The opening of the V-shaped sidewall 42 aligns with the opening of the arc-shaped sidewall 41 to form a continuously extending annular structure. The connection between the V-shaped sidewall 42 and the arc-shaped sidewall 41 is smooth. The arc-shaped sidewall 41 reduces the lateral impact force of waves, while the V-shaped sidewall 42 provides excellent structural stability. When using the protective shell 4, the arc-shaped sidewall 41 can be oriented towards the coast, thus satisfying both the structural strength requirements of the protective shell 4 and effectively reducing the impact of waves.

[0076] Depending on the requirements, the arc-shaped sidewall 41 may include a U-shaped sidewall or a C-shaped sidewall, and the specific shape of the arc-shaped sidewall 41 can be selected according to the volume of the submersible pump 2.

[0077] Reference Figure 2 and Figure 6 The protective device for the submersible pump also includes a connecting elbow 8, which includes a first flange 81 and a second flange 82 spaced apart in the vertical direction. The first flange 81 is connected to the top of the protective sleeve 6, and the second flange 82 is located below the first flange 81 and is used to connect the outlet pipe 3 of the submersible pump. In this way, the first flange 81 and the second flange 82 are staggered in the vertical direction, which provides operating space for the assembly of the protective sleeve 6, but is not limited thereto.

[0078] In another aspect of this disclosure, a seawater cooling system for a wind turbine, a submersible pump 2, and a protection device for the submersible pump as described above are provided.

[0079] Continue to refer to Figure 2 Furthermore, the seawater cooling system of the wind turbine also includes multiple guide rollers 7. These guide rollers 7 are spaced apart circumferentially outside the submersible pump 2. The distance between the guide rollers 7 and the protective sleeve 6 is adjustable. During the lifting or lowering of the submersible pump 2, the guide rollers 7 positioned outside the submersible pump 2 can protect it, preventing contact wear between the submersible pump 2 and the inner wall of the protective sleeve 6. Furthermore, the adjustable distance between the guide rollers 7 and the protective sleeve 6 allows the guide rollers 7 to adapt to different protective sleeves 6.

[0080] To reduce the adhesion of marine organisms to the submersible pump 2 and thus its normal operation, the seawater cooling system of the wind turbine also includes a marine organism protection device connected to the outside of the submersible pump 2. As an example, the marine organism protection device may be used to store chemical agents, for example, but not limited to, a drug delivery pipe 10, which may be arranged on the outside of the submersible pump 2, but is not limited thereto.

[0081] In order to facilitate the smooth lowering of the submersible pump 2 of the seawater cooling system into the seawater, and to facilitate the lifting of the submersible pump 2 out of the seawater for maintenance after the wind turbine has been running for a period of time, the protective sleeve 6 provided in this disclosure is arranged vertically, which can reduce the contact friction between the submersible pump 2 and the protective sleeve 6 during the lifting or lowering process.

[0082] To improve the reliability of the submersible pump's protection device, the frame 1 can be fixedly connected to the fan foundation. For example, but not limited to, in the case of a jacketed fan foundation, the frame 1 can be fixed to the mounting platform of the jacketed fan foundation, but not limited thereto.

[0083] Typically, the docking platform is located above sea level, for example, but not limited to, at a position of 6.5 meters above sea level, or higher. Being near the coast helps prevent damage to components mounted on the docking platform from waves during extreme weather and reduces splash corrosion.

[0084] The protective device for the submersible pump can extend from the landing platform down to below sea level. For example, but not limited to, the submersible pump 2 can be located 4m below sea level or even deeper below sea level, so that the cold energy in the seawater can be used more effectively to cool the wind turbine generator.

[0085] The protective sleeve 6 typically extends downwards from the landing platform, suspended and connected to it via structural components such as elbow flanges. Due to its relatively long length, the protective sleeve 6 is prone to swaying under the lateral thrust of waves. By installing the protective shell 4, the load impact of waves can be mitigated to some extent, preventing the load and fatigue effects caused by the swaying and impact of water flow on the submersible pump 2, and reducing the sway amplitude of the protective sleeve 6.

[0086] Furthermore, by providing at least two positioning guides 5 at intervals on the frame 1, on the one hand, the guides can be provided during the lifting or lowering of the protective sleeve 6, reducing the positioning difficulty of the protective sleeve 6 and improving the assembly efficiency of the protective sleeve 6, thereby improving the assembly efficiency of the submersible pump's protection device; on the other hand, during the operation of the wind turbine generator set, the positioning guides 5 can position the protective sleeve 6, preventing the protective sleeve 6 from swinging with the waves, thereby protecting the protective sleeve 6 to a certain extent.

[0087] The seawater cooling system may also include a heat exchanger, which may be placed above sea level. The heat exchanger and the submersible pump 2 are connected by an outlet pipe 3. In order to improve the reliability of the seawater cooling system, the outlet pipe 3 and the connecting elbow 8 may be connected by a crimping fitting or a spring clamp, but are not limited thereto.

[0088] In the description of this disclosure, it should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0089] 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 disclosure, unless otherwise stated, "a plurality of" means two or more.

[0090] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a communication connection; 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 disclosure according to the specific circumstances.

[0091] The features, structures, or characteristics described in this disclosure can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the foregoing description to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details described, or other methods, components, materials, etc., can be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

Claims

1. A protective device for a submersible pump, characterized in that, Suitable for submersible pumps, the protective device for the submersible pump includes: Rack (1); A protective sleeve (6) is used to wrap around the submersible pump, and the protective sleeve is detachably connected to the frame (1); A positioning guide (5) is connected to the frame (1), and the positioning guide (5) has a guide through hole through which the protective sleeve (6) passes. The positioning guide (5) and the protective sleeve (6) are provided with a first guide part and a second guide part that matches the first guide part.

2. The protection device for the submersible pump as described in claim 1, characterized in that, The first guide portion includes a guide groove, and the second guide portion includes a guide protrusion.

3. The protection device for the submersible pump as described in claim 2, characterized in that, The protective sleeve body (6) includes protective sleeve units (61) connected in sequence. Two adjacent protective sleeve units (61) are connected by an end flange (62). The end flange (62) is provided with at least two guide grooves (63) spaced apart along its circumference. The positioning guide (5) includes a positioning ring (51) and a guide protrusion (52). The guide protrusion (52) protrudes from the inner edge of the positioning ring (51) toward the center of the positioning ring (51).

4. The protection device for the submersible pump as described in claim 3, characterized in that, The bottom of the guide groove (63) is recessed into the outer peripheral wall of the protective sleeve unit (61).

5. The protection device for the submersible pump as described in claim 3, characterized in that, The positioning guide (5) further includes a guide wing (53) that extends obliquely outward from the guide protrusion (52); and / or, each guide protrusion (52) is provided with two guide wings (53), which are respectively disposed on both sides of the positioning ring (51) along its axial direction.

6. The protective device for the submersible pump as described in any one of claims 1-5, characterized in that, A filter screen (9) is provided at the bottom of the protective sleeve (6); and / or, The protective sleeve (6) has a filter hole on its side wall, and the inner cavity of the protective sleeve (6) can communicate with the outside through the filter hole.

7. The protective device for the submersible pump as described in any one of claims 1-5, characterized in that, The protective device of the submersible pump also includes a protective housing (4), which is cylindrical and connected to the frame (1) in a vertical direction, and the protective sleeve (6) is disposed in the inner cavity of the protective housing (4).

8. The protection device for the submersible pump as described in claim 7, characterized in that, The protective shell (4) has an arc-shaped sidewall (41) at one end and a V-shaped sidewall (42) at the other end. The opening of the V-shaped sidewall (42) and the opening of the arc-shaped sidewall (41) are connected to form a continuously extending annular structure. The connection between the V-shaped sidewall (42) and the arc-shaped sidewall (41) is smooth.

9. The protection device for a submersible pump as described in claim 8, characterized in that, The arc-shaped sidewall (41) includes a U-shaped sidewall or a C-shaped sidewall; and / or, The bottom or side wall of the protective housing (4) is provided with a water inlet hole.

10. The protective device for the submersible pump as described in any one of claims 1-5, characterized in that, The protective device of the submersible pump also includes a connecting elbow (8), which includes a first flange (81) and a second flange (82) spaced apart in the vertical direction. The first flange (81) is connected to the top of the protective sleeve (6), and the second flange (82) is located below the first flange (81) and is used to connect the outlet pipe (3) of the submersible pump.

11. A seawater cooling system for a wind turbine generator, characterized in that, The seawater cooling system of the wind turbine includes a submersible pump (2) and a protection device for the submersible pump as described in any one of claims 1-10.

12. The seawater cooling system for a wind turbine as described in claim 11, characterized in that, The seawater cooling system of the wind turbine also includes multiple guide rollers (7), which are spaced apart circumferentially from the submersible pump (2). The distance between the guide rollers (7) and the protective sleeve (6) is adjustable; and / or, The seawater cooling system of the wind turbine also includes a marine organism protection device, which is connected to the submersible pump (2).

13. A wind turbine generator set, characterized in that, The wind turbine generator set includes the seawater cooling system for the wind turbine generator set as described in claim 11 or 12.

14. The wind turbine generator set as described in claim 13, characterized in that, The wind turbine generator set includes a jacket-type wind turbine foundation (102), the jacket-type wind turbine foundation (102) includes a landing platform (101), and the frame (1) is fixed to the landing platform (101).

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