Water splashing prevention device of generator main shaft

Abstract

The utility model discloses a water splashing prevention device of a generator main shaft, and belongs to the field of generator equipment. Mainly comprises an installation assembly, the installation assembly comprises a first detachable water seal tray, a second detachable water seal tray and a water seal assembly, the water seal assembly is connected to the interior of the installation assembly, and the water seal assembly comprises a main water seal plate and an auxiliary water seal plate which are connected to the first water seal tray and the second water seal tray in a clamped mode; the auxiliary water seal plate is connected to the lower end of the main water seal plate, the waterproof assembly is connected to the upper end of the mounting assembly, and the waterproof assembly comprises a waterproof splash cover mounted on the first water seal tray and the second water seal tray. According to the water splashing prevention device of the generator spindle, the water splashing prevention cover of the waterproof assembly blocks water thrown out of the spindle in a large area, a multi-sealing structure formed by the main water sealing plate and the auxiliary water sealing plate of the water sealing assembly is matched, the waterproof performance is effectively improved, electrical and mechanical parts are protected, and the overall performance of a generator is improved.

Description

Technical Field

[0001] This application relates to the field of generator equipment, specifically to a device for preventing water splashing from a generator spindle. Background Technology

[0002] During generator operation, the sealing of the main shaft is crucial. For equipment such as hydro generators, due to the presence of a large amount of water in their working environment, water can easily rise along the main shaft when it rotates at high speed and splash out from the gap between the main shaft and related components. The splashed water may come into contact with the generator's electrical components.

[0003] For example, in large hydropower stations, the turbine and generator are closely connected. When the turbine is running, some water will inevitably leak into the vicinity of the generator's main shaft. If there is a lack of effective waterproofing measures, the frequency of short circuit faults will increase significantly. At the same time, the splashed water will corrode the mechanical parts of the generator. Critical mechanical parts such as bearings and journals will undergo oxidation and corrosion after long-term contact with water, resulting in damage to the surface of the parts, a decrease in precision, and ultimately affecting the overall performance and service life of the generator.

[0004] However, some generators use a thin metal plate as a water baffle on the main shaft for waterproofing. This plate is often not securely installed, leaving large gaps between it and the main shaft and generator housing. When the turbine drives the generator shaft to rotate at high speed, water leaking from the turbine is thrown out in large quantities through the gaps in the metal plate under centrifugal force. This water enters the generator, comes into contact with bearings and other mechanical components, accelerates bearing wear, and causes increased vibration during generator operation, thus affecting the generator's normal power generation function.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a device to prevent water splashing from the generator main shaft. This addresses the issue that some generator waterproofing measures involve installing a thin metal plate as a water baffle on the main shaft. However, the metal plate is not securely installed and there are large gaps between it and the main shaft and the generator housing. When the turbine drives the generator main shaft to rotate at high speed, water leaking from the turbine is thrown out in large quantities through the gaps in the metal plate under the action of centrifugal force. This water enters the generator and can easily damage it.

[0007] The technical solution adopted by this application to solve its technical problem is: a device for preventing water splashing from a generator main shaft. It mainly includes:

[0008] The mounting assembly includes a removable first water seal tray and a second water seal tray;

[0009] A water seal assembly is connected inside the mounting assembly. The water seal assembly includes a main water seal plate and an auxiliary water seal plate that are snapped onto a first water seal tray and a second water seal tray. The auxiliary water seal plate is connected to the lower end of the main water seal plate.

[0010] A waterproof component is connected to the upper end of the mounting component. The waterproof component includes a waterproof splash guard installed on the first water seal tray and the second water seal tray to block water thrown out by the rotation of the generator main shaft.

[0011] Furthermore, the installation component includes a triangular connecting plate installed at the connection between the first water seal tray and the second water seal tray. The upper ends of the first water seal tray and the second water seal tray are provided with a first assembly groove, and the bottom of the first assembly groove is provided with a second assembly groove.

[0012] Furthermore, the triangular connecting plate is threaded with a closing bolt.

[0013] Furthermore, the upper ends of the first and second water seal trays are provided with wear-resistant rings, which are connected to the generator main shaft.

[0014] Furthermore, the water seal assembly includes a positioning pin and a positioning rod connected to the bottom of the second assembly groove. The lower end face of the auxiliary water seal plate is provided with a plurality of positioning grooves and positioning holes. The positioning holes extend into the interior of the main water seal plate. The positioning pin is located inside the positioning groove. The positioning rod is located inside the positioning hole. The main water seal plate is engaged with the interior of the first assembly groove. The auxiliary water seal plate is engaged with the interior of the second assembly groove. One end of the main water seal plate is provided with a circular groove, and the end away from the circular groove is connected with a circular protrusion. The circular protrusion is engaged with the interior of the circular groove.

[0015] Furthermore, the positioning grooves and positioning holes are distributed alternately.

[0016] Furthermore, the waterproof component includes an L-shaped sealing plate installed at one end of the waterproof splash cover. A sealing groove is provided on one side of the waterproof splash cover, and the L-shaped sealing plate is snapped into the inside of the sealing groove. The main water seal plate and the auxiliary water seal plate are connected to a triangular reinforcing plate, and the waterproof splash cover is connected to the upper end of the triangular reinforcing plate.

[0017] The beneficial effects of this application are: the anti-splashing device for generator main shaft provided by this application blocks water splashed out by the main shaft over a large area through the waterproof splash cover of the waterproof component, and the multi-seal structure formed by the main and auxiliary water seal plates of the water seal component effectively improves waterproof performance, protects electrical and mechanical components, and enhances the overall performance of the generator. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0019] In the attached diagram:

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a generator spindle anti-splashing device according to an embodiment of this application;

[0021] Figure 2 This is an assembly diagram of the installation components and water seal components according to embodiments of this application;

[0022] Figure 3 This is a three-dimensional structural diagram of the installation component according to an embodiment of this application;

[0023] Figure 4 This is a three-dimensional structural schematic diagram of a water seal assembly according to an embodiment of this application;

[0024] Figure 5 This is a three-dimensional structural diagram of the water seal assembly and the waterproof assembly according to embodiments of this application;

[0025] Figure 6 This is a three-dimensional structural diagram of a waterproof component according to an embodiment of this application.

[0026] The following are the labeling elements in the figure:

[0027] 1. Installation Components; 101. First Water Seal Tray; 102. Second Water Seal Tray; 103. Triangular Connecting Plate; 104. Closing Bolt; 105. First Assembly Groove; 106. Second Assembly Groove; 107. Triangular Reinforcing Plate; 108. Wear-resistant Ring; 2. Water Seal Components; 201. Main Water Seal Plate; 202. Auxiliary Water Seal Plate; 203. Positioning Groove; 204. Positioning Hole; 205. Positioning Pin; 206. Positioning Rod; 207. Circular Protrusion; 208. Circular Groove; 3. Waterproof Components; 301. Waterproof Splash Cover; 302. L-Sealing Plate; 303. Sealing Groove. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] like Figure 1 - Figure 6 As shown, this application provides a device for preventing water splashing from the generator main shaft, mainly including: a mounting assembly 1, which includes a detachable first water seal tray 101 and a second water seal tray 102; a water seal assembly 2, which is connected inside the mounting assembly 1, and includes a main water seal plate 201 and an auxiliary water seal plate 202 snapped onto the first water seal tray 101 and the second water seal tray 102, with the auxiliary water seal plate 202 connected to the lower end of the main water seal plate 201; and a waterproof assembly 3, which is connected to the upper end of the mounting assembly 1, and includes a waterproof splash cover 301 installed on the first water seal tray 101 and the second water seal tray 102 to block water splashed out by the rotation of the generator main shaft.

[0031] In the installation component 1, the first water seal tray 101 and the second water seal tray 102 are designed to be detachable, which facilitates the installation, disassembly and subsequent maintenance of the device. In actual application scenarios, if a certain part of the device malfunctions or needs to be inspected regularly, the first water seal tray 101 and the second water seal tray 102 can be easily separated to repair or replace the internal components. The main water seal plate 201 and the auxiliary water seal plate 202 in the water seal component 2 are snapped onto the first water seal tray 101 and the second water seal tray 102, forming a multi-seal structure. This multi-seal design greatly increases the difficulty of water penetration and effectively blocks water leakage. The waterproof splash cover 301 in the waterproof component 3 is installed on the first water seal tray 101 and the second water seal tray 102. Its large area can block the water thrown out over a large area when the generator main shaft rotates.

[0032] like Figure 2 , Figure 3 and Figure 4As shown, when the first water seal tray 101 and the second water seal tray 102 are connected by the triangular connecting plate 103, the through holes on the triangular connecting plate 103 are precisely aligned and connected by the closing bolt 104. When tightening the closing bolt 104, a preload control tool is used to gradually apply torque in a certain order to ensure that the preload of each bolt is uniform, reducing deformation or loosening of the connection part due to uneven force. This connection method not only ensures the stability of the overall structure of the installation component 1, but also facilitates disassembly operations during subsequent maintenance or repair.

[0033] The first water seal tray 101 and the second water seal tray 102 are made of high-strength aluminum alloy, such as 6061 aluminum alloy. This aluminum alloy has good strength and, compared with traditional steel, can effectively reduce the overall weight of the device while ensuring sufficient structural strength, making it easy to install and transport.

[0034] The main water seal plate 201 and the first assembly groove 105 are connected by an interference fit. The edge of the main water seal plate 201 is designed with a ring of elastic sealing lip. When the main water seal plate 201 is installed into the first assembly groove 105, the sealing lip is compressed and undergoes elastic deformation, tightly fitting against the groove wall of the first assembly groove 105, forming a good sealing effect and enhancing the stability of the connection. The connection between the auxiliary water seal plate 202 and the second assembly groove 106 is similar. The edge of the auxiliary water seal plate 202 is also provided with a sealing structure, which is connected to the second assembly groove 106. The groove 106 fits tightly, and the positioning pin 205 and the positioning groove 203, and the positioning rod 206 and the positioning hole 204 adopt a high-precision clearance fit. The surfaces of the positioning pin 205 and the positioning rod 206 are finely machined and have low surface roughness. During installation, the positioning pin 205 and the positioning rod 206 are accurately inserted into the corresponding positioning groove 203 and positioning hole 204 by using a special positioning tool, so as to achieve precise positioning of the water seal assembly 2 in the installation assembly 1 and prevent the water seal assembly 2 from being displaced or shaking during use.

[0035] Among them, the main water seal plate 201 and the auxiliary water seal plate 202 are made of fluororubber. Fluororubber has high temperature resistance, oil resistance and chemical corrosion resistance. During the operation of the generator, it may come into contact with high temperature water vapor, lubricating oil and other chemicals. Fluororubber can maintain stable physical and chemical properties in such harsh environments and is not prone to aging, deformation or corrosion. The positioning pin 205 and the positioning rod 206 are made of stainless steel, such as 304 stainless steel. 304 stainless steel has good corrosion resistance and high strength and can be used for a long time in humid environments without rusting.

[0036] The circular protrusion 207 of the main water seal plate 201 and the circular groove 208 are engaged by a conical surface fit. The outer conical surface of the circular protrusion 207 and the inner conical surface of the circular groove 208 are precisely matched at the angle. During installation, the circular protrusion 207 is aligned with the circular groove 208 and inserted. As the insertion depth increases, the fit between the conical surfaces becomes tighter and tighter, generating greater friction and clamping force, which further enhances the reliability and sealing of the connection between the main water seal plate 201 and the auxiliary water seal plate 202. At the same time, the positioning groove 203 and the positioning hole 204 are staggered. This layout allows the main water seal plate 201 and the auxiliary water seal plate 202 to be effectively positioned and constrained in both the horizontal and vertical directions, preventing them from rotating or displacing relative to each other during operation.

[0037] like Figure 5 and Figure 6 As shown, the L-sealing plate 302 and the sealing groove 303 on the waterproof splash cover 301 are fitted with an interference fit. The L-sealing plate 302 is made of silicone rubber, which has good elasticity. During manufacturing, the size of the L-sealing plate 302's interlocking part is designed to be slightly larger than the sealing groove 303. Utilizing the elasticity of silicone rubber, a certain external force is applied during installation to embed it into the sealing groove 303. After embedding, the squeezing force generated by the interference fit makes the two fit tightly together. The two sides of the L-sealing plate 302's interlocking part are designed with a certain taper structure. This is because silicone rubber is relatively soft, and the taper structure makes it easier to guide it smoothly into the sealing groove 303.

[0038] The triangular reinforcing plate 107 is a right triangle, with one right-angled side welded to the top of the main water seal plate 201 and the auxiliary water seal plate 202. At the same time, the waterproof splash cover 301 is connected to the triangular reinforcing plate 107 by bolts. The thickness of the triangular reinforcing plate 107 is determined according to the amount of external force to be borne, generally between 5 and 10 mm, to ensure that it can effectively enhance the structural strength of the connection part.

[0039] Working Principle: During actual installation, the first water seal tray 101 and the second water seal tray 102 are connected by a triangular connecting plate 103 and a closing bolt 104. Tightening the closing bolt 104 forms a stable overall structure, providing a reliable foundation for the installation of subsequent components. When installing the water seal assembly 2, carefully align each component and precisely insert the positioning pin 205 into the positioning groove 203 on the lower end face of the auxiliary water seal plate 202. Simultaneously, insert the positioning rod 206 into the positioning hole 204. Because the positioning grooves 203 and positioning holes 204 are staggered, this design improves the accuracy of the water seal assembly 2 installation. After ensuring stability, the main water seal plate 201 is snapped into the first assembly groove 105, and the auxiliary water seal plate 202 is snapped into the second assembly groove 106. Because the auxiliary water seal plate 202 and the main water seal plate 201 are fixedly connected, the auxiliary water seal plate 202 can be installed simultaneously when the main water seal plate 201 is installed. The main water seal plate 201 is placed in a staggered manner in the first assembly groove 105, with the connection points of its circular protrusion 207 and circular groove 208 located inside the first assembly groove 105. This design greatly enhances the sealing performance of the water seal and effectively prevents water penetration. When installing the waterproof component 3, the waterproof splash cover is... 301 is installed on the upper end of the triangular reinforcing plate 107, while ensuring that the L-sealing plate 302 is tightly engaged in the sealing groove 303. After this step, the assembly of the entire device is basically completed. Then, the first water seal tray 101 and the second water seal tray 102 are connected to the generator with bolts. At this time, the first water seal tray 101 and the second water seal tray 102 are clearance-fitted with the generator's main shaft, which can ensure that there is a certain amount of movement between the device and the main shaft, and prevent water from leaking out in large quantities from the gap. At the same time, the wear ring 108 is connected to the generator's main shaft. When the generator is running, the wear ring 108 follows the generator. The synchronous rotation of the wear-resistant ring 108 not only reduces friction between the generator main shaft and the device, extending the service life of the device and the main shaft, but also acts as a water barrier, further reducing the impact of water on the generator. During generator operation, when the main shaft rotates at high speed, even if water rises along the main shaft and tries to splash out, it will be blocked by the waterproof splash cover 301, making it difficult for it to directly contact the electrical components and mechanical parts of the generator. A small amount of water that passes through the waterproof splash cover 301 will also be blocked by the water seal assembly 2 composed of the main water seal plate 201 and the auxiliary water seal plate 202, thus effectively preventing water from damaging the internal components of the generator.

[0040] The above are merely preferred embodiments of this application and are not intended to limit 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 protection scope of this application.

Claims

1. A water-splatter-preventing device for a generator main shaft, characterized by: include: Mounting assembly (1), which includes a removable first water seal tray (101) and a second water seal tray (102); A water seal assembly (2) is connected inside the mounting assembly (1). The water seal assembly (2) includes a main water seal plate (201) and an auxiliary water seal plate (202) that are snapped onto the first water seal tray (101) and the second water seal tray (102). The auxiliary water seal plate (202) is connected to the lower end of the main water seal plate (201). Waterproof component (3), which is connected to the upper end of mounting component (1), includes a waterproof splash cover (301) installed on the first water seal tray (101) and the second water seal tray (102) to block water thrown out by the rotation of the generator main shaft.

2. The anti-splashing device for generator main shaft according to claim 1, characterized in that: The installation component (1) includes a triangular connecting plate (103) installed at the connection between the first water seal tray (101) and the second water seal tray (102). The upper end of the first water seal tray (101) and the second water seal tray (102) is provided with a first assembly groove (105), and the bottom of the first assembly groove (105) is provided with a second assembly groove (106).

3. A water throw prevention device for a generator main shaft according to claim 2, characterized in that: A closing bolt (104) is threaded onto the triangular connecting plate (103).

4. A water throw prevention device for a generator main shaft according to claim 2, characterized in that: The upper ends of the first water seal tray (101) and the second water seal tray (102) are provided with wear-resistant rings (108), which are connected to the generator main shaft.

5. A water throw prevention device for a generator main shaft according to claim 2, characterized in that: The water seal assembly (2) includes a positioning pin (205) and a positioning rod (206) connected to the bottom of the second assembly groove (106). The lower end face of the auxiliary water seal plate (202) is provided with a plurality of positioning grooves (203) and positioning holes (204). The positioning holes (204) extend into the interior of the main water seal plate (201). The positioning pin (205) is located inside the positioning groove (203). The positioning rod (206) is located inside the positioning hole (204). The main water seal plate (201) is engaged with the interior of the first assembly groove (105). The auxiliary water seal plate (202) is engaged with the interior of the second assembly groove (106). One end of the main water seal plate (201) is provided with a circular groove (208), and the end away from the circular groove (208) is connected with a circular protrusion (207). The circular protrusion (207) is engaged with the interior of the circular groove (208).

6. A water throw prevention device for a generator main shaft according to claim 5, characterized in that: The positioning grooves (203) and positioning holes (204) are staggered.

7. A water throw prevention device for a generator main shaft according to claim 5, characterized in that: The waterproof component (3) includes an L-shaped sealing plate (302) installed at one end of the waterproof splash cover (301). A sealing groove (303) is provided on one side of the waterproof splash cover (301). The L-shaped sealing plate (302) is snapped into the inside of the sealing groove (303). The main water seal plate (201) and the auxiliary water seal plate (202) are connected to a triangular reinforcing plate (107). The waterproof splash cover (301) is connected to the upper end of the triangular reinforcing plate (107).

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