Shielding type underwater propeller stator

Abstract

The utility model discloses a shielding type underwater thruster stator, which belongs to the technical field of underwater thrusters and comprises a metal shell, metal flanges are respectively welded at two ends of the metal shell, connecting welding holes are formed in the middle parts of the two metal flanges, shielding sleeves are fixedly sleeved in the two connecting welding holes, and the shielding sleeves are connected with the metal flanges. And the middle part of the shielding sleeve penetrates through the inner cavity of the metal shell. According to the utility model, the metal shell, the metal flange and the shielding sleeve are connected through welding, and the stator winding and the stator coil are arranged in the space formed by welding and sealing the metal shell, the metal flange and the shielding sleeve, so that a pressure compensation device is omitted, a sealing ring is not needed for sealing, and pressure compensation liquid is not needed; the problem of pressure compensation liquid leakage does not exist, the underwater propeller is designed to be of a pressure bearing structure and can work underwater for a long time, and the operation safety of the underwater propeller is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of underwater propulsion technology, and more specifically, to a shielded underwater propulsion stator. Background Technology

[0002] Underwater special propulsion motors are a type of electric propulsion device with high technical content, encompassing fluid dynamics design, motor design, and material selection. Their novel and unique structure, coupled with superior characteristics, makes them ideal for use as propulsion systems for underwater robots and torpedoes.

[0003] A search revealed a utility model patent with publication number CN220562929U, which discloses an underwater thruster with pressure compensation, including an underwater thruster body and a pressure compensation component. The pressure compensation component includes a deformation container and a cavity disposed inside the underwater thruster body. The deformation container is connected to the cavity, and both the deformation container and the cavity are filled with pressure compensation liquid. This patent provides pressure compensation, thereby balancing the pressure inside the sealed shell of the underwater thruster with that in the water, achieving stable operation in deep water. However, the above patent has the following shortcomings: the underwater thruster requires a pressure compensation component and pressure compensation liquid, which is prone to leakage; seawater entering the motor cavity can cause the motor to burn out. Therefore, we propose a shielded underwater thruster stator. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a shielded underwater thruster stator.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A shielded underwater thruster stator includes a metal outer shell, with metal flanges welded to both ends of the metal outer shell. Each of the two metal flanges has a connecting welding hole in its center, and a shielding sleeve is fixedly fitted into each of the two connecting welding holes. The shielding sleeve penetrates the inner cavity of the metal outer shell through its center. Multiple slots are provided at both ends of the metal outer shell. A stator winding is fixedly fitted onto the outer side of the shielding sleeve and located on the inner side of the metal outer shell. Multiple sets of stator coils are arranged on the stator winding. A reinforcing support mechanism is provided on the outer side of the shielding sleeve.

[0007] As a preferred embodiment of this utility model, the reinforcing support mechanism includes two reinforcing sleeves sleeved on the outside of the shielding sleeve. Multiple support plates are fixedly connected to the outside of the two reinforcing sleeves respectively. The ends of the multiple support plates are movably sleeved into the inner cavity of the slot. The inner wall of the reinforcing sleeve is in contact with the outer surface of the shielding sleeve. One end of the two reinforcing sleeves is in contact with both ends of the stator winding, and the other end of the two reinforcing sleeves is in contact with the end faces of two metal flanges respectively.

[0008] In a preferred embodiment of this utility model, the shielding sleeve is made of stainless steel.

[0009] In a preferred embodiment of this utility model, the stator winding and the stator coil are separated by an insulating material made of mica.

[0010] In a preferred embodiment of this utility model, the outer side of the stator winding is in contact with the inner wall of the metal casing.

[0011] In a preferred embodiment of this utility model, the side of the end of the support plate is in contact with the inner wall of the slot.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] (1) In this utility model, the metal shell, metal flange and shielding sleeve are connected by welding, and the stator winding and stator coil are placed in the space sealed by welding of the metal shell, metal flange and shielding sleeve. The pressure compensation device is eliminated, there is no need for sealing rings or pressure compensation liquid, there is no problem of pressure compensation liquid leakage, and it is designed as a pressure-bearing structure, which can work underwater for a long time, greatly improving the safety of underwater thruster operation.

[0014] (2) In this utility model, by using the reinforcing sleeve, the support plate and the slot together, the metal shell supports the shielding sleeve by using the reinforcing sleeve and the support plate, and the reinforcing sleeve and the support plate play a role in bearing pressure, thus ensuring reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the metal casing of this utility model;

[0019] Figure 5This is a schematic diagram of the structure of the reinforcing support mechanism of this utility model.

[0020] Explanation of the labels in the diagram:

[0021] 1. Metal casing; 2. Metal flange; 3. Shielding sleeve; 4. Stator winding; 5. Stator coil; 6. Slot; 7. Reinforcing support mechanism; 8. Reinforcing sleeve; 9. Support plate; 10. Connection welding hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] Please see Figure 1-5A shielded underwater thruster stator includes a metal outer shell 1, with metal flanges 2 welded to both ends of the metal outer shell 1. Each of the two metal flanges 2 has a connecting welding hole 10 in the middle. A shielding sleeve 3 is fixedly sleeved in the two connecting welding holes 10. The middle of the shielding sleeve 3 penetrates the inner cavity of the metal outer shell 1. Multiple slots 6 are provided at both ends of the metal outer shell 1. A stator winding 4 is fixedly sleeved on the outside of the shielding sleeve 3 and located on the inside of the metal outer shell 1. Multiple sets of stator coils 5 are provided on the stator winding 4. A reinforcing support mechanism 7 is provided on the outside of the shielding sleeve 3.

[0027] In this embodiment, the connection between the welding hole 10 and the shielding sleeve 3 is achieved by welding. In addition, the metal shell 1 and the metal flange 2 are made of high-strength corrosion-resistant metal materials to prevent them from being corroded by seawater.

[0028] For details, please refer to Figures 2 to 5 The reinforcing support mechanism 7 includes two reinforcing sleeves 8 sleeved on the outside of the shielding sleeve 3. Multiple support plates 9 are fixedly connected to the outside of the two reinforcing sleeves 8 respectively. The ends of the multiple support plates 9 are movably sleeved into the inner cavity of the slot 6. The inner wall of the reinforcing sleeve 8 is in contact with the outer surface of the shielding sleeve 3. One end of the two reinforcing sleeves 8 is in contact with both ends of the stator winding 4 respectively. The other end of the two reinforcing sleeves 8 is in contact with the end faces of the two metal flanges 2 respectively.

[0029] In this embodiment, the reinforcing sleeve 8 and the support plate 9 are used to support the shielding sleeve 3, and the reinforcing sleeve 8 and the support plate 9 play a role in bearing pressure.

[0030] For details, please refer to Figure 2 The shielding sleeve 3 is made of stainless steel.

[0031] In this embodiment, the stainless steel shielding sleeve 3 can effectively prevent it from being corroded by seawater.

[0032] For details, please refer to Figure 2 The stator winding 4 and the stator coil 5 are separated by an insulating material made of mica.

[0033] For details, please refer to Figure 3 The outer side of the stator winding 4 is in contact with the inner wall of the metal casing 1.

[0034] In this embodiment, the metal casing 1 is designed to support the stator winding 4.

[0035] For details, please refer to Figure 2 and Figure 3 The side of the end of the support plate 9 fits against the inner wall of the slot 6.

[0036] In this embodiment, the stability of the support plate 9 inserted into the inner cavity of the slot 6 is ensured.

[0037] Working principle: First, stator coil 5 is fitted onto stator winding 4, and stator winding 4 is fixedly fitted onto the middle of the outer side of shielding sleeve 3. Then, stator winding 4 is fitted onto the inner side of metal shell 1, and reinforcing sleeve 8 is fitted onto the outer side of shielding sleeve 3 and at both ends of stator winding 4. The support plate 9 on the side of reinforcing sleeve 8 is inserted into the slot 6 on the inner side of metal shell 1. Then, metal flange 2 is fitted onto both ends of metal shell 1, and both ends of shielding sleeve 3 are inserted into the connection welding holes 10 on the two metal flanges 2. Finally, the contact between metal shell 1 and metal flange 2 is welded, and the shielding sleeve 3 and the connection welding holes 10 are welded. This makes the stator an integral pressure-bearing structure design, which does not require a pressure compensation device or pressure compensation liquid. The sealing ring structure is eliminated, and no additional sealing ring is required. The sealing part adopts a metal welding structure, which effectively prevents leakage.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A shielded underwater thruster stator, characterized in that: The device includes a metal shell (1), with metal flanges (2) welded to both ends of the metal shell (1). Each of the two metal flanges (2) has a connecting welding hole (10) in the middle. A shielding sleeve (3) is fixedly fitted into the two connecting welding holes (10). The middle of the shielding sleeve (3) penetrates the inner cavity of the metal shell (1). Multiple slots (6) are provided at both ends of the metal shell (1). A stator winding (4) is fixedly fitted on the outside of the shielding sleeve (3) and on the inside of the metal shell (1). Multiple sets of stator coils (5) are provided on the stator winding (4). A reinforcing support mechanism (7) is provided on the outside of the shielding sleeve (3).

2. The shielded underwater thruster stator according to claim 1, characterized in that: The reinforcing support mechanism (7) includes two reinforcing sleeves (8) sleeved on the outside of the shielding sleeve (3). Multiple support plates (9) are fixedly connected to the outside of the two reinforcing sleeves (8). The ends of the multiple support plates (9) are movably sleeved into the inner cavity of the slot (6). The inner wall of the reinforcing sleeve (8) is in contact with the outer side of the shielding sleeve (3). One end of the two reinforcing sleeves (8) is in contact with both ends of the stator winding (4). The other end of the two reinforcing sleeves (8) is in contact with the end faces of the two metal flanges (2).

3. The shielded underwater thruster stator according to claim 1, characterized in that: The shielding sleeve (3) is made of stainless steel.

4. The shielded underwater thruster stator according to claim 1, characterized in that: The stator winding (4) and stator coil (5) are separated by an insulating material made of mica.

5. A shielded underwater thruster stator according to claim 1, characterized in that: The outer side of the stator winding (4) is in contact with the inner wall of the metal casing (1).

6. A shielded underwater thruster stator according to claim 2, characterized in that: The side of the end of the support plate (9) is in contact with the inner wall of the slot (6).

Images