Non-driving-end insulating end cover of ship generator and assembling method of non-driving-end insulating end cover

Abstract

The invention relates to the technical field of non-driving end covers, in particular to a non-driving end insulation end cover of a ship generator and an assembling method thereof.The non-driving end insulation end cover comprises a generator base and an end plate assembly, the inner side of the end plate assembly is fixedly connected with a middle ring assembly through a fixed insulation assembly, and the inner side of the end plate assembly is attached to the inner side of the insulation plate assembly; the inner side of the insulating plate assembly is filled with a polyester belt, the generator base is fixedly connected with the middle ring assembly, the end plate assembly comprises an end plate body, bolt holes are formed in the inner side of the end plate body, heat dissipation holes are formed in the inner side of the end plate body, reinforcing ribs are fixedly connected to the inner sides of the heat dissipation holes formed in the end plate body, and fixing straight holes are formed in the inner side of the end plate body. According to the end plate, shaft current is effectively prevented from passing through a bearing to form a loop, so that the corrosion of a bearing bush material caused by electrochemical action is prevented, and the service life of the bearing bush and the stable operation of a generator are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of non-driving end covers, and in particular to a non-driving end insulating end cover of a ship generator and an assembling method thereof. Background Art

[0002] The non-drive end cover of a ship generator is an important component of the generator. It is located on the non-drive side of the generator, opposite to the drive end cover. The main function of the non-drive end cover is to position the rotor core together with the bearing, and to tighten it together with the base and the drive end cover through bolts to ensure the stability and integrity of the generator structure. The non-drive end cover plays a vital role in the generator and plays a core role in the assembly and maintenance of the generator. This component ensures a stable connection between the inside and outside of the generator and is the key to ensuring the normal operation and long-term reliability of the generator. During the operation of the generator, the generation of shaft current is inevitable. When these currents flow through the motor shaft through the bearing, they are conducted to the bearing seat through the lubricating oil, and then transmitted to the end cover by the bearing seat, finally forming a closed loop. Electrochemical action occurs in the bearing, causing corrosion of the bearing material, and then damaging the bearing. Such corrosion and damage will reduce the operating reliability of the generator and affect its performance and life. Therefore, in view of the above problems, an insulating end cover of the non-driving end of a marine generator and an assembly method thereof are proposed. Summary of the invention

[0003] The purpose of the present invention is to provide an insulating end cover of the non-driving end of a ship generator and an assembly method thereof, so as to solve the problem that when the shaft current forms a closed loop, electrochemical reaction will occur, causing corrosion of the bearing material and further damage to the bearing. Such corrosion and damage will reduce the operating reliability of the generator and affect its performance and life.

[0004] To achieve the above object, the present invention provides the following technical solutions: A non-driving end insulating end cover of a ship generator and an assembly method thereof, comprising a generator base and an end plate assembly, the inner side of the end plate assembly is fixedly connected with an intermediate ring assembly through a fixed insulating assembly, the inner side of the end plate assembly is fitted with the inner side of the insulating plate assembly, the inner side of the insulating plate assembly is filled with a polyester tape, the generator base and the end plate assembly are connected by bolts, the end plate assembly comprises an end plate body, the inner side of the end plate body is provided with bolt holes, the inner side of the end plate body is provided with heat dissipation holes, the inner side of the heat dissipation holes provided in the end plate body is fixedly connected with reinforcing ribs, the inner side of the end plate body is provided with a fixed straight hole, the inner side of the end plate body is provided with a placement groove, the intermediate ring assembly comprises an intermediate ring plate, the inner side of the intermediate ring plate is provided with a bearing fixing hole, the rear end of the intermediate ring plate is provided with an angle groove, the outer side of the intermediate ring plate is provided with a first filling groove, and the intermediate ring plate is close to the first filling groove. A second filling slot is provided at the rear end of a filling slot, a threaded fixing hole is provided on the inner side of the intermediate ring plate, the insulating plate assembly includes a first epoxy glass fiber ring, a second epoxy glass fiber ring is fixedly connected to the outer side of the rear end of the first epoxy glass fiber ring, an embedding hole is provided on the inner side of the second epoxy glass fiber ring, an inner convex ring is fixedly connected to the inner side of the first epoxy glass fiber ring, a first anti-deflection insulating ring is fixedly connected to the inner side of the inner convex ring, a second anti-deflection insulating ring is fixedly connected to the inner side of the first epoxy glass fiber ring near the rear end of the inner convex ring, a third anti-deflection insulating ring is fixedly connected to the inner side of the first epoxy glass fiber ring, the fixed insulating assembly includes a fixing bolt, an elastic gasket is sleeved on the outer side of the fixing bolt, an insulating gasket is sleeved on the outer side of the fixing bolt, an insulating tube is sleeved on the rear end of the fixing bolt near the insulating gasket, and an isolation groove is provided on the inner side of the insulating tube.

[0005] As further optimized content of the present invention, wherein: the shape of the end plate body is a slotted cylinder, the bolt hole passes through the inner side of the end plate body, the end plate assembly is fixedly connected to the non-driving end of the generator base, the number of the bolt holes is several, the shape of the heat dissipation holes is a cylinder, the heat dissipation holes pass through the inner side of the end plate body, and the number of the heat dissipation holes is the same as the number of the reinforcing ribs.

[0006] As a further optimization of the present invention, the shape of the reinforcing rib is composed of three rectangular bodies, the three rectangular bodies of the reinforcing rib form an angle of 120 degrees, and the front and rear ends of the reinforcing rib are flush with the front and rear ends of the end plate body.

[0007] As a further optimized content of the present invention, wherein: the end plate body is sleeved on the outer side of the front end of the intermediate ring plate through a placement groove, the placement groove is opened in a cylindrical shape, and the placement groove passes through the inner side of the end plate body.

[0008] As a further optimization content of the present invention, the outer side of the polyester belt is fitted with the inner sides of the first anti-deflection insulating ring, the second anti-deflection insulating ring and the third anti-deflection insulating ring opened in the insulating plate assembly, the front end of the polyester belt is flush with the front end of the end plate body, the inner side of the polyester belt is fitted with the inner sides of the first filling groove and the second filling groove opened in the middle ring plate, the rear end of the polyester belt is fitted with the rear end of the second filling groove opened in the middle ring plate, and silicone is applied to the outer and inner sides of the polyester belt.

[0009] As a further optimization of the present invention, the shape of the intermediate ring plate is composed of two sections of a cylinder, annular grooves are provided on the inner sides of the first filling groove and the second filling groove, the front end of the corner groove is a chamfered structure, the front end of the intermediate ring plate is flush with the front end of the end plate body, and the rear end of the intermediate ring plate protrudes from the rear end of the end plate body.

[0010] As further optimized content of the present invention, the first epoxy glass fiber ring, the second epoxy glass fiber ring, the first anti-deflection insulating ring, the second anti-deflection insulating ring and the third anti-deflection insulating ring are all in the shape of hollow cylinders, the insulating plate assembly is clamped on the inner side of the end plate body and the outer side of the polyester belt, the embedded hole passes through the inner side of the second epoxy glass fiber ring, the front end of the second epoxy glass fiber ring is tightly attached to the rear end of the end plate body, the first epoxy glass fiber ring and the inner convex ring are flush with the front end of the end plate body, and the inner side of the embedded hole is attached to the outer side of the rear end of the insulating tube.

[0011] As a further optimization of the present invention, the threaded fixing hole passes through the inner side of the intermediate ring plate, the inner side of the threaded fixing hole opened in the intermediate ring plate is spirally fitted with the outer side of the rear end of the fixing bolt, the number of the threaded fixing holes is the same as the number of the fixing bolts, and the intermediate ring plate is fixed to the end plate body by the fixing bolts.

[0012] As a further optimization of the present invention, the insulating tube is embedded in the inner side of the fixed straight hole, the front end of the insulating tube is flush with the front end of the end plate body, the rear end of the insulating tube is fitted with the rear end of the second filling groove opened in the middle ring plate, the rear end of the elastic gasket is fitted with the front end of the insulating gasket, the rear end of the insulating gasket is fitted with the front end of the end plate body, and the fixing bolt is embedded in the inner side of the isolation groove.

[0013] A method for assembling a non-driving end insulating end cover of a ship generator, S1: When assembling the non-drive end cover of the ship generator, the generator base and the end plate body are fixed by bolts, the intermediate ring plate is fixed to the bearing, the intermediate ring plate is not in direct contact with the end plate body, and the current inside the intermediate ring plate is blocked by the insulating plate assembly and the polyester tape. When installing the insulating plate assembly and the polyester tape between the end plate body and the intermediate ring plate, the outer side of the first epoxy glass fiber ring is sleeved on the inner side of the placement groove opened in the end plate body, the front end of the intermediate ring plate is placed on the inner side of the first epoxy glass fiber ring, and the front end of the intermediate ring plate is flush with the front end of the first epoxy glass fiber ring. The inner side of the first epoxy glass fiber ring and the inner convex ring, the first anti-deflection insulating ring, the second anti-deflection insulating ring and the third anti-deflection insulating ring are evenly coated with silicone, the inner side of the first filling groove and the second filling groove are evenly coated with silicone, and the first filling groove and the second filling groove opened on the outer side of the intermediate ring plate are evenly filled with polyester tape. S2: When fixing between the end plate body and the middle ring plate and ensuring the insulation after fixing, the rear ends of multiple insulating gaskets are placed one by one at the front ends of the fixing straight holes, the elastic gasket is placed at the front ends of the insulating gaskets, and the insulating gaskets and fixing bolts are screwed through the isolation grooves and the threaded fixing holes opened in the middle ring plate for fixing.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the insulating plate assembly and the polyester belt are provided, and the device uses the insulating plate assembly and the polyester belt as insulating materials, which effectively blocks the shaft current from forming a closed loop, thereby preventing the corrosion of the bearing material caused by electrochemical action, ensuring the service life of the bearing and the stable operation of the generator; 2. In the present invention, by providing an insulating tube, an insulating gasket and a second epoxy glass fiber ring, a multi-layer insulating assembly insulating tube, a second epoxy glass fiber ring and an insulating gasket are used between the end plate body and the intermediate ring plate for fixing and insulation treatment, which not only realizes the mechanical fixation of the two parts, but also prevents the current from being conducted, thereby improving the insulation performance and safety of the generator; 3. In the present invention, heat dissipation holes and reinforcing ribs are provided, and a plurality of heat dissipation holes are opened to conduct heat generated inside the generator, thereby reducing the problem of heat accumulation and reducing the weight of the end plate body of the component. The overall strength of the end plate body is improved through the design of the reinforcing ribs, thereby ensuring the lightweight and strength requirements of the generator components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the end plate body structure of the present invention; Figure 3 This is a schematic diagram of the reinforcing rib structure of the present invention; Figure 4 For the present invention Figure 3A schematic diagram of the structure at A; Figure 5 This is a schematic diagram of the structure of the intermediate ring plate of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the structure at B; Figure 7 For the present invention Figure 5 Schematic diagram of the structure at C; Figure 8 It is a schematic diagram of the structure of the fixed insulation component of the present invention.

[0016] In the figure: 1. Generator base; 2. End plate assembly; 21. End plate body; 22. Bolt hole; 23. Heat dissipation hole; 24. Reinforcement rib; 25. Fixing straight hole; 26. Placement groove; 3. Intermediate ring assembly; 31. Intermediate ring plate; 32. Angle groove; 33. First filling groove; 34. Second filling groove; 35. Threaded fixing hole; 36. Bearing fixing hole; 4. Insulation board assembly; 41. First epoxy glass fiber ring; 42. Second epoxy glass fiber ring; 43. Embedding hole; 44. Inner convex ring; 45. First anti-deflection insulation ring; 46. Second anti-deflection insulation ring; 47. Third anti-deflection insulation ring; 5. Polyester belt; 6. Fix the insulating assembly; 61. Fix the bolt; 62. Elastic gasket; 63. Insulating gasket; 64. Insulating tube; 65. Isolation groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0019] See also Figure 1-8 , the present invention provides a technical solution: A non-drive end insulating end cover of a ship generator and an assembly method thereof, comprising a generator base 1 and an end plate assembly 2, wherein the inner side of the end plate assembly 2 is fixedly connected with an intermediate ring assembly 3 through a fixed insulating assembly 6, the inner side of the end plate assembly 2 is fitted with the inner side of an insulating plate assembly 4, the inner side of the insulating plate assembly 4 is filled with a polyester tape 5, the generator base 1 and the end plate assembly 2 are connected by bolts, the end plate assembly 2 comprises an end plate body 21, the inner side of the end plate body 21 is provided with a bolt hole 22, the inner side of the end plate body 21 is provided with a heat dissipation hole 23, the inner side of the heat dissipation hole 23 provided in the end plate body 21 is fixedly connected with a reinforcing rib 24, the inner side of the end plate body 21 is provided with a fixed straight hole 25, the inner side of the end plate body 21 is provided with a placement groove 26, the intermediate ring assembly 3 comprises an intermediate ring plate 31, the inner side of the intermediate ring plate 31 is provided with a bearing fixing hole 36, the rear end of the intermediate ring plate 31 is provided with an angle groove 32, the outer side of the intermediate ring plate 31 is provided with a first filling groove 33, the intermediate ring plate 31 is close to the first filling groove 33 A second filling groove 34 is provided at the rear end, a threaded fixing hole 35 is provided at the inner side of the middle ring plate 31, the insulating plate assembly 4 includes a first epoxy glass fiber ring 41, a second epoxy glass fiber ring 42 is fixedly connected to the outer side of the rear end of the first epoxy glass fiber ring 41, an embedding hole 43 is provided at the inner side of the second epoxy glass fiber ring 42, an inner convex ring 44 is fixedly connected to the inner side of the first epoxy glass fiber ring 41, a first anti-deflection insulating ring 45 is fixedly connected to the inner side of the inner convex ring 44, a second anti-deflection insulating ring 46 is fixedly connected to the inner side of the first epoxy glass fiber ring 41 near the rear end of the inner convex ring 44, a third anti-deflection insulating ring 47 is fixedly connected to the inner side of the first epoxy glass fiber ring 41, the fixed insulating assembly 6 includes a fixing bolt 61, an elastic gasket 62 is sleeved on the outer side of the fixing bolt 61, an insulating gasket 63 is sleeved on the outer side of the fixing bolt 61, an insulating tube 64 is sleeved on the rear end of the fixing bolt 61 near the insulating gasket 63, and an isolation groove 65 is provided on the inner side of the insulating tube 64.

[0020] As a further implementation of the present scheme, the end plate body 21 is shaped as a slotted cylinder, the bolt hole 22 penetrates the inner side of the end plate body 21, the end plate assembly 2 is fixedly connected to the non-driving end of the generator frame 1, the bolt hole 22 is provided in a number, the heat dissipation hole 23 is provided in a cylindrical shape, the heat dissipation hole 23 penetrates the inner side of the end plate body 21, the number of the heat dissipation holes 23 is the same as the number of the reinforcing ribs 24, the reinforcing ribs 24 are shaped as three sections of rectangular bodies, the three sections of the rectangular bodies of the reinforcing ribs 24 form an angle of 120 degrees, the front end and the rear end of the reinforcing ribs 24 are both flush with the front end and the rear end of the end plate body 21, the heat dissipation area is increased, the heat dissipation efficiency is improved, and the stability of the structure is maintained at the same time, and the uniform distribution of the heat dissipation holes 23 helps to uniformly conduct the heat generated inside the generator and reduce the problem of heat accumulation; As a further implementation of the present invention, the end plate body 21 is sleeved on the outer side of the front end of the intermediate ring plate 31 through the placement groove 26. The placement groove 26 is formed in a cylindrical shape. The placement groove 26 passes through the inner side of the end plate body 21. The outer side of the polyester belt 5 is fitted with the inner side of the placement groove 26 formed in the end plate body 21. The front end of the polyester belt 5 is flush with the front end of the end plate body 21. The outer side of the polyester belt 5 is fitted with the inner side of the first anti-deflection insulating ring 45, the second anti-deflection insulating ring 46 and the third anti-deflection insulating ring 47 formed in the insulating plate assembly 4. The front end of the polyester belt 5 is flush with the front end of the end plate body 21, the inner side of the polyester belt 5 is in contact with the inner sides of the first filling groove 33 and the second filling groove 34 opened in the middle ring plate 31, and the rear end of the polyester belt 5 is in contact with the rear end of the second filling groove 34 opened in the middle ring plate 31. The outer and inner sides of the polyester belt 5 are coated with silicone, and good insulation performance is maintained to prevent current leakage. The coating of silicone and the setting of the polyester belt 5 enhance the insulation and sealing properties, prevent the leakage of current and liquid, and improve the safety and reliability of the equipment. As a further implementation of the present invention, the shape of the intermediate ring plate 31 is composed of two sections of cylinders, the inner sides of the first filling groove 33 and the second filling groove 34 are both provided with annular grooves, the front end of the angle groove 32 is a chamfered structure, the front end of the intermediate ring plate 31 is flush with the front end of the end plate body 21, and the rear end of the intermediate ring plate 31 protrudes from the rear end of the end plate body 21. The first epoxy glass fiber ring 41, the second epoxy glass fiber ring 42, the first anti-deflection insulating ring 45, the second anti-deflection insulating ring 46 and the third anti-deflection insulating ring 47 are all hollow cylinders, and the insulating plate assembly 4 is clamped on the inner side of the end plate body 21 and the outer side of the polyester belt 5, and is embedded. The entry hole 43 passes through the inner side of the second epoxy glass fiber ring 42, the front end of the second epoxy glass fiber ring 42 is in close contact with the rear end of the end plate body 21, the first epoxy glass fiber ring 41 and the inner convex ring 44 are flush with the front end of the end plate body 21, and the inner side of the embedded hole 43 is in close contact with the outer side of the rear end of the insulating tube 64. This two-stage cylindrical design and annular groove provide additional connection and fixing points, which enhances the stability of the structure, and the chamfered structure helps to reduce stress concentration and improve the strength of the connection part. The clamping structure provides a stable fixation, ensures the correct position of the insulating material, and prevents the installed polyester tape 5 from falling off; As a further implementation of this solution, the threaded fixing hole 35 passes through the inner side of the intermediate ring plate 31, the inner side of the threaded fixing hole 35 opened in the intermediate ring plate 31 is spirally fitted with the outer side of the rear end of the fixing bolt 61, the number of the threaded fixing holes 35 is the same as the number of the fixing bolts 61, the intermediate ring plate 31 is fixed to the end plate body 21 by the fixing bolts 61, the bearing fixing hole 36 passes through the inner side of the intermediate ring plate 31, the bearing is fixed on the intermediate ring plate 31, the number of the bearing fixing holes 36 is the same as the number of the mounting holes on the bearing, the intermediate ring plate 31 is fixed by the fixing bolts 61 1 is fixed to the end plate body 21, the insulating tube 64 is embedded and installed on the inner side of the fixing straight hole 25, the front end of the insulating tube 64 is flush with the front end of the end plate body 21, the rear end of the insulating tube 64 is fitted with the rear end of the second filling groove 34 opened in the middle ring plate 31, the rear end of the elastic gasket 62 is fitted with the front end of the insulating gasket 63, the rear end of the insulating gasket 63 is fitted with the front end of the end plate body 21, and the fixing bolt 61 is embedded and installed on the inner side of the isolation groove 65, which not only realizes the mechanical fixation of the two parts, but also prevents the current from being conducted, thereby improving the insulation performance and safety of the generator.

[0021] Working process: When the generator is running, shaft current will be generated. In order to prevent the shaft current from forming a closed loop and causing corrosion and damage to the bearing material, the non-driving end of the generator is installed and fixed to the end plate body 21, and the intermediate ring plate 31 is fixed to the bearing. The intermediate ring plate 31 is not in direct contact with the end plate body 21. The current between the intermediate ring plate 31 and the end plate body 21 is blocked by the insulating plate assembly 4 and the polyester belt 5. The material of the insulating plate assembly 4 is epoxy glass fiber. The insulating plate assembly 4 is a high-performance composite material that is widely used in industry and electronics. This material is made of multiple layers of woven glass fiber cloth impregnated with epoxy resin and then laminated. Its main characteristics include excellent insulation and is suitable for use as an insulating material in high voltage environments. It can prevent current conduction between the end plate body 21 and the intermediate ring plate 31, so that a closed loop will not be formed, thereby preventing corrosion of the bearing material and ensuring the service life of the bearing. The insulating plate assembly between the end plate body 21 and the intermediate ring plate 31 When installing the polyester tape 5, firstly, the outer side of the first epoxy glass fiber ring 41 is sleeved on the inner side of the placement groove 26 opened in the end plate body 21, so that the front end of the first epoxy glass fiber ring 41 is flush with the front end of the end plate body 21, and the front end of the intermediate ring plate 31 is placed on the inner side of the first epoxy glass fiber ring 41, and the front end of the intermediate ring plate 31 is flush with the front end of the first epoxy glass fiber ring 41, so that the center of the front end of the intermediate ring plate 31 coincides with the center of the front end of the first epoxy glass fiber ring 41, and the inner side of the inner convex ring 44, the first anti-deflection insulating ring 45, the second anti-deflection insulating ring 46 and the third anti-deflection insulating ring 47 opened in the first epoxy glass fiber ring 41 are evenly coated with silicone, and the inner side of the first filling groove 33 and the second filling groove 34 is evenly coated with silicone, and the first filling groove 33 and the second filling groove 34 opened on the outer side of the intermediate ring plate 31 are evenly filled with polyester tape 5, and at this time, the intermediate ring plate 31 can be separated from the end plate body 21 to play an insulating role; When fixing between the end plate body 21 and the intermediate ring plate 31 and ensuring the insulation after fixing, the threaded fixing hole 35 opened on the inner side of the intermediate ring plate 31 is aligned with the embedding hole 43 opened on the first epoxy glass fiber ring 41, and the embedding hole 43 is aligned with the fixing straight hole 25 opened on the end plate body 21. The insulating tubes 64 are embedded one by one in the fixing straight hole 25 and the embedding hole 43, so that the rear end of the insulating tube 64 is tightly attached to the front end of the second epoxy glass fiber ring 42. At this time, the rear ends of multiple insulating gaskets 63 are placed one by one at the front end of the fixing straight hole 25, and then the elastic gasket 62 is placed at the front end of the insulating gasket 63. The insulating gasket 63 plays a role in the elastic gasket 62 and the fixing bolt 61 and the end plate body 2 1, the elastic gasket 62 can increase the stability of the fixing bolt 61 after installation, the fixing bolt 61 is screwed through the isolation groove 65 and the threaded fixing hole 35 opened in the middle ring plate 31, and the insulating tube 64 is squeezed by the nut of the fixing bolt 61 to improve the stability of the connection between the insulating tube 64 and the first epoxy glass fiber ring 41. At this time, the connection between the middle ring plate 31 and the end plate body 21 is realized by the fixing of multiple fixing bolts 61. The insulation of the insulating tube 64, the second epoxy glass fiber ring 42 and the insulating gasket 63 not only realizes the fixation of the end plate body 21 and the middle ring plate 31, but also prevents the current from being conducted between the end plate body 21 and the middle ring plate 31; When the end plate body 21 is in use, heat accumulation inside the generator is prevented, the weight of the end plate body 21 is reduced while ensuring the strength of the end plate body 21. During normal use, the heat inside the generator flows out through the heat dissipation holes 23, thereby preventing heat accumulation inside the generator and ensuring the safe use of the generator. At the same time, the weight of the end plate body 21 can be reduced by opening a plurality of heat dissipation holes 23. According to the setting of the shape of the reinforcing ribs 24, the reinforcing ribs 24 can increase the strength of the end plate body 21, greatly reduce the phenomenon of the end plate body 21 deforming into the heat dissipation holes 23, and improve the overall strength of the end plate body 21.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulating end cover of a non-driving end of a ship generator, comprising a generator base (1) and an end plate assembly (2), characterized in that: The inner side of the end plate assembly (2) is fixedly connected to the intermediate ring assembly (3) via a fixed insulating assembly (6); the inner side of the end plate assembly (2) is in contact with the inner side of the insulating plate assembly (4); the inner side of the insulating plate assembly (4) is filled with a polyester tape (5); the generator base (1) and the end plate assembly (2) are connected via bolts; the end plate assembly (2) comprises an end plate body (21); the inner side of the end plate body (21) is provided with bolt holes (22); the inner side of the end plate body (21) is provided with heat dissipation holes (23); the heat dissipation holes (23) provided on the end plate body (21) 23) is fixedly connected with a reinforcing rib (24) on the inner side, a fixing straight hole (25) is provided on the inner side of the end plate body (21), a placement groove (26) is provided on the inner side of the end plate body (21), the intermediate ring assembly (3) comprises an intermediate ring plate (31), a bearing fixing hole (36) is provided on the inner side of the intermediate ring plate (31), an angle groove (32) is provided at the rear end of the intermediate ring plate (31), a first filling groove (33) is provided on the outer side of the intermediate ring plate (31), and a second filling groove (34) is provided on the intermediate ring plate (31) near the rear end of the first filling groove (33), The middle ring plate (31) has a threaded fixing hole (35) formed on its inner side. The insulating plate assembly (4) comprises a first epoxy glass fiber ring (41). The outer side of the rear end of the first epoxy glass fiber ring (41) is fixedly connected to a second epoxy glass fiber ring (42). The inner side of the second epoxy glass fiber ring (42) has an embedding hole (43). The inner side of the first epoxy glass fiber ring (41) is fixedly connected to an inner convex ring (44). The inner side of the inner convex ring (44) is fixedly connected to a first anti-deflection insulating ring (45). The first epoxy glass fiber ring (41) A second anti-deflection insulating ring (46) is fixedly connected to the inner side near the rear end of the inner convex ring (44), a third anti-deflection insulating ring (47) is fixedly connected to the inner side of the first epoxy glass fiber ring (41), the fixed insulating assembly (6) comprises a fixing bolt (61), an elastic gasket (62) is sleeved on the outer side of the fixing bolt (61), an insulating gasket (63) is sleeved on the outer side of the fixing bolt (61), an insulating tube (64) is sleeved on the rear end of the fixing bolt (61) near the insulating gasket (63), and an isolation groove (65) is opened on the inner side of the insulating tube (64).

2. The non-driving end insulating end cover of a marine generator according to claim 1, characterized in that: The end plate body (21) is in the shape of a slotted cylinder, the bolt hole (22) penetrates the inner side of the end plate body (21), the end plate assembly (2) is fixedly connected to the non-driving end of the generator base (1), the bolt hole (22) is provided in a plurality of numbers, the heat dissipation hole (23) is in the shape of a cylinder, the heat dissipation hole (23) penetrates the inner side of the end plate body (21), and the number of the heat dissipation holes (23) is the same as the number of the reinforcing ribs (24).

3. The non-driving end insulating end cover of a marine generator according to claim 1, characterized in that: The reinforcing rib (24) is in the shape of three rectangular sections, the three rectangular sections of the reinforcing rib (24) form an angle of 120 degrees, and the front and rear ends of the reinforcing rib (24) are both flush with the front and rear ends of the end plate body (21).

4. The non-driving end insulating end cover of a marine generator according to claim 1, characterized in that: The end plate body (21) is sleeved on the outer side of the front end of the intermediate ring plate (31) via a placement groove (26); the placement groove (26) is opened in a cylindrical shape and passes through the inner side of the end plate body (21).

5. The non-driving end insulating end cover of a marine generator according to claim 1, characterized in that: The outer side of the polyester belt (5) is in contact with the inner sides of the first anti-deflection insulating ring (45), the second anti-deflection insulating ring (46) and the third anti-deflection insulating ring (47) provided on the insulating plate assembly (4); the front end of the polyester belt (5) is flush with the front end of the end plate body (21); the inner side of the polyester belt (5) is in contact with the inner sides of the first filling groove (33) and the second filling groove (34) provided on the intermediate ring plate (31); the rear end of the polyester belt (5) is in contact with the rear end of the second filling groove (34) provided on the intermediate ring plate (31); and the outer side and the inner side of the polyester belt (5) are both coated with silicone.

6. The non-driving end insulating end cover of a marine generator according to claim 1, characterized in that: The intermediate ring plate (31) is shaped as two sections of a cylinder, an annular groove is provided inside the first filling groove (33) and the second filling groove (34), the front end of the corner groove (32) is a chamfered structure, the front end of the intermediate ring plate (31) is flush with the front end of the end plate body (21), and the rear end of the intermediate ring plate (31) protrudes from the rear end of the end plate body (21).

7. The non-driving end insulating end cover of a marine generator according to claim 1, characterized in that: The first epoxy glass fiber ring (41), the second epoxy glass fiber ring (42), the first anti-deflection insulating ring (45), the second anti-deflection insulating ring (46) and the third anti-deflection insulating ring (47) are all in the shape of hollow cylinders. The insulating plate assembly (4) is clamped on the inner side of the end plate body (21) and the outer side of the polyester belt (5). The embedding hole (43) passes through the inner side of the second epoxy glass fiber ring (42). The front end of the second epoxy glass fiber ring (42) is tightly attached to the rear end of the end plate body (21). The first epoxy glass fiber ring (41) and the inner convex ring (44) are flush with the front end of the end plate body (21). The inner side of the embedding hole (43) is attached to the outer side of the rear end of the insulating tube (64).

8. The non-driving end insulating end cover of a marine generator according to claim 1, characterized in that: The threaded fixing hole (35) passes through the inner side of the intermediate ring plate (31); the inner side of the threaded fixing hole (35) provided on the intermediate ring plate (31) is spirally fitted with the outer side of the rear end of the fixing bolt (61); the number of the threaded fixing holes (35) is the same as the number of the fixing bolts (61); the intermediate ring plate (31) is fixed to the end plate body (21) by the fixing bolts (61); the bearing fixing hole (36) passes through the inner side of the intermediate ring plate (31); the bearing is fixed on the intermediate ring plate (31); the number of the bearing fixing holes (36) is the same as the number of mounting holes on the bearing.

9. The non-driving end insulating end cover of a marine generator according to claim 1, characterized in that: The insulating tube (64) is embedded and installed on the inner side of the fixing straight hole (25); the front end of the insulating tube (64) is flush with the front end of the end plate body (21); the rear end of the insulating tube (64) is in contact with the rear end of the second filling groove (34) provided on the intermediate ring plate (31); the rear end of the elastic gasket (62) is in contact with the front end of the insulating gasket (63); the rear end of the insulating gasket (63) is in contact with the front end of the end plate body (21); and the fixing bolt (61) is embedded and installed on the inner side of the isolation groove (65).

10. A method for assembling a non-driving end insulating end cover of a marine generator according to any one of claims 1 to 9, characterized in that: S1: When assembling the non-drive end cover of a ship generator, first assemble the end cover assembly, then fix the end plate body (21) in the end cover assembly to the generator base by bolts, and finally install the bearing on the intermediate ring plate (31) by bolts. The generator base (1) and the end plate body (21) are fixed by bolts, and the intermediate ring plate (31) is fixed to the bearing. The intermediate ring plate (31) is not in direct contact with the end plate body (21). The current between the intermediate ring plate (31) and the end plate body (21) is blocked by the insulating plate assembly (4) and the polyester belt (5). When the insulating plate assembly (4) and the polyester belt (5) between the end plate body (21) and the intermediate ring plate (31) are installed, the first epoxy glass fiber The outer side of the ring (41) is sleeved on the inner side of the placement groove (26) opened in the end plate body (21), the front end of the intermediate ring plate (31) is placed on the inner side of the first epoxy glass fiber ring (41), the front end of the intermediate ring plate (31) is flush with the front end of the first epoxy glass fiber ring (41), the inner side of the first epoxy glass fiber ring (41) and the inner sides of the inner convex ring (44), the first anti-deflection insulating ring (45), the second anti-deflection insulating ring (46) and the third anti-deflection insulating ring (47) are uniformly coated with silicone, the inner sides of the first filling groove (33) and the second filling groove (34) are uniformly coated with silicone, and the first filling groove (33) and the second filling groove (34) opened on the outer side of the intermediate ring plate (31) are uniformly filled with polyester tape (5); S2: When fixing between the end plate body (21) and the intermediate ring plate (31) and ensuring insulation after fixing, the rear ends of the plurality of insulating gaskets (63) are placed one by one at the front ends of the fixing straight holes (25), the elastic gaskets (62) are placed at the front ends of the insulating gaskets (63), and the insulating gaskets (63) and the fixing bolts (61) are passed through the isolation grooves (65) and are screwedly fixed to the threaded fixing holes (35) opened in the intermediate ring plate (31).

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