Double seal of first steel variable frequency motor

Abstract

The utility model discloses a first steel variable frequency motor double seal, comprising a body part which comprises a casing and a rotor shaft; the reinforcing part comprises a sealing ring, an inner groove, a hole body, a sealing plug, a guide rod, a guide ring, a limiting block and a sealing plate; the sealing plates are connected to the two sides of the outer surface of the machine shell, an inner groove is formed in the middle of one side of the outer surface of each sealing plate, hole bodies are formed in the circumference of the inner surface of each inner groove at equal intervals, a sealing ring is connected to one side of the outer surface of each sealing plate, and sealing plugs are connected to the circumference of one side of the outer surface of each sealing ring at equal intervals. The sealing plug is connected to the interior of the hole body in an embedded mode. The utility model relates to a variable frequency motor, and aims to solve the problems that when an existing first-steel variable frequency motor is actually used, the interior of the motor is provided with a sealing structure, for example, when the variable frequency motor needs to be placed underwater, underwater pressure is large, so that the compression resistance effect cannot be achieved between the motor and a sealing piece, and the bearing pressure is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of variable-frequency motors, especially to the double seal of Shougang variable-frequency motors. Background Art

[0002] The Shougang variable-frequency motor is a highly efficient and energy-saving motor, which is used in a variety of industrial applications, especially in the field of drive motors for new energy vehicles. The Shougang variable-frequency motor mainly adopts the vector control method, and realizes high-performance control by decoupling and controlling the stator excitation current component and torque current component of the AC motor.

[0003] When the existing Shougang variable-frequency motor is actually used, the inside of the motor itself has a sealing structure. For example, when the variable-frequency motor needs to be placed underwater, the pressure underwater is relatively large, which leads to the inability to achieve the anti-pressure effect between the motor and the seal, and the bearing pressure is poor. Therefore, a double seal for the Shougang variable-frequency motor is needed to increase the bearing pressure. Content of the Utility Model

[0004] The purpose of the utility model is to provide a double seal for the Shougang variable-frequency motor to solve the problem raised in the above background art that when the existing Shougang variable-frequency motor is actually used, the inside of the motor itself has a sealing structure. For example, when the variable-frequency motor needs to be placed underwater, the pressure underwater is relatively large, which leads to the inability to achieve the anti-pressure effect between the motor and the seal, and the bearing pressure is poor.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The double seal for the Shougang variable-frequency motor of the utility model includes:

[0007] A body component, the body component includes a casing and a rotor shaft;

[0008] A reinforcement component, the reinforcement component includes a sealing ring, an inner groove, a hole body, a sealing plug, a guide rod, a guide ring, a limiting block and a sealing plate;

[0009] The sealing plate is connected to both sides of the outer surface of the casing. The middle part of one side of the outer surface of the sealing plate is provided with an inner groove. The inner surface of the inner groove is circumferentially and equidistantly provided with hole bodies. One side of the outer surface of the sealing plate is connected with a sealing ring. One side of the outer surface of the sealing ring is circumferentially and equidistantly connected with sealing plugs, and the sealing plugs are connected to the inside of the hole bodies by means of inlay.

[0010] Furthermore, a plurality of guide rods are connected to one side of the outer surface of the sealing plate, a plurality of guide rings are connected to the outer surface of the sealing ring, and the guide rings are connected to the outer surface of the guide rods.

[0011] Furthermore, a limiting block is fixedly connected to one side of the outer surface of the guide rod, and the sealing ring fits on the outer surface of the inside of the inner groove.

[0012] Furthermore, the body component further includes a stator, a motor rotor, an end cover, a bearing, and a rotor shaft;

[0013] The upper part of the inner surface of the housing is connected with a stator, the bottom of the stator is connected with an end cover, and the rotor shaft is connected to the middle parts on both sides of the outer surface of the housing, and one end of the outer surface of the rotor shaft is connected with a bearing.

[0014] Furthermore, a sealing component is further included, and the sealing component includes a gasket and a skeleton oil seal;

[0015] One end of the outer surface of the rotor shaft is connected with a skeleton oil seal by an adhesive bonding method, and the skeleton oil seals are symmetrically distributed.

[0016] Furthermore, the inner surface of the housing is connected with a gasket by an adhesive bonding method, and the gasket is connected between the inner surface of the sealing plate and the inner surface of the housing.

[0017] Compared with the prior art, the advantages of the present utility model are as follows:

[0018] In the present utility model, by providing an inner groove on the outer side of the sealing plate and providing a hole body inside the inner groove, insulating oil can be filled into the hole body. By the guiding ring moving on the outside of the guiding rod, the sealing ring is pushed inward, so that the sealing plug is embedded in the hole body, making the inside of the hole body in a sealed state, and the insulating oil filled inside will cover the inside of the housing. By using the filled insulating oil, the compressive strength of the housing and the internal sealing parts can be increased, with a water pressure resistance of up to ten thousand meters underwater, increasing the bearing capacity.

[0019] Based on the above beneficial effects, by providing a gasket on the inner surface of the housing and providing a skeleton oil seal at one end of the outer surface of the rotor shaft, the inside of the traditional housing only has a single sealing structure. By providing the skeleton oil seal, and the skeleton oil seal is adhesively bonded in a double layer between the rotor shaft and the inner surface of the housing, and the internal gasket will be adhesively bonded in a double layer between the inner surface of the housing and the inner surface of the sealing plate. When an external structure is docked with the rotor shaft, the gasket and the skeleton oil seal can achieve a double sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the overall housing of the present utility model;

[0022] Figure 2Schematic diagram of the front of the casing of the present utility model;

[0023] Figure 3 Schematic diagram of the inside of the casing of the present utility model.

[0024] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0025] 11. Casing; 12. Stator; 13. Motor rotor; 14. End cover; 15. Bearing; 16. Rotor shaft;

[0026] 21. Sealing ring; 22. Inner groove; 23. Hole body; 24. Sealing plug; 25. Guide rod; 26. Guide ring; 27. Limit block; 28. Sealing plate;

[0027] 31. Sealing gasket; 32. Skeleton oil seal. Specific embodiments

[0028] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given in conjunction with the attached drawings.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0030] To make the purpose, technical solution, and advantages of the present utility model clearer, the following will further describe the embodiments of the present utility model in detail in conjunction with the attached drawings.

[0031] Please refer to Figures 1-3 As shown, this embodiment is a double seal for a Shougang variable-frequency motor, including:

[0032] Body components, the body components including a casing 11 and a rotor shaft 16;

[0033] Reinforcement components, the reinforcement components including a sealing ring 21, an inner groove 22, a hole body 23, a sealing plug 24, a guide rod 25, a guide ring 26, a limit block 27, and a sealing plate 28;

[0034] The sealing plate 28 is connected to both sides of the outer surface of the casing 11. In the middle of one side of the outer surface of the sealing plate 28, an inner groove 22 is provided. The inner surface of the inner groove 22 is circumferentially and equidistantly provided with hole bodies 23. One side of the outer surface of the sealing plate 28 is connected with a sealing ring 21. The outer surface of the sealing ring 21 is circumferentially and equidistantly connected with sealing plugs 24. The sealing plugs 24 are connected to the inside of the hole bodies 23 by means of inlay;

[0035] The interior of the hole body 23 can be filled with insulating oil. The guiding ring 26 moves outside the guiding rod 25 to push the sealing ring 21 inward, causing the sealing plug 24 to be embedded in the interior of the hole body 23. By using the filled insulating oil, the compressive strength of the housing 11 and the internal seal can be increased.

[0036] On one side of the outer surface of the sealing plate 28, a plurality of guiding rods 25 are connected. On the outer surface of the sealing ring 21, a plurality of guiding rings 26 are connected, and the guiding rings 26 are connected to the outer surface of the guiding rods 25;

[0037] By the guiding ring 26 moving outside the guiding rod 25, the sealing ring 21 is pushed inward.

[0038] On one side of the outer surface of the guiding rod 25, a limiting block 27 is fixedly connected. The sealing ring 21 fits on the outer surface of the inner groove 22;

[0039] The pushed sealing ring 21 will be fixed outside the inner groove 22, making the inner groove 22 sealed.

[0040] The body component further includes a stator 12, a motor rotor 13, an end cover 14, a bearing 15, and a rotor shaft 16;

[0041] On the upper part of the inner surface of the housing 11, the stator 12 is connected. At the bottom of the stator 12, the end cover 14 is connected. And the rotor shaft 16 is connected to the middle parts on both sides of the outer surface of the housing 11. At one end of the outer surface of the rotor shaft 16, a bearing 15 is connected;

[0042] The external device is installed together with the rotor shaft 16, and then the housing 11 can be used.

[0043] The working principle is as follows: First, the guiding ring 26 moves outside the guiding rod 25 to pull out the sealing ring 21. Then, the interior of the hole body 23 is filled with insulating oil. By the guiding ring 26 moving outside the guiding rod 25, the sealing ring 21 is pushed inward, causing the sealing plug 24 to be embedded in the interior of the hole body 23, making the interior of the hole body 23 in a sealed state, and the filled insulating oil will cover the interior of the housing 11;

[0044] When the housing 11 is in use, the filled insulating oil can be utilized to increase the compressive strength of the housing 11 and the internal seal, with a water pressure resistance of up to ten thousand meters underwater, increasing the bearing capacity.

[0045] Please refer to Figure 1 、 Figure 3 As shown, based on the above-mentioned Embodiment 1, this embodiment further includes a sealing component, and the sealing component includes a sealing gasket 31 and a skeleton oil seal 32;

[0046] At one end of the outer surface of the rotor shaft 16, a skeleton oil seal 32 is connected by an adhesive method, and the skeleton oil seals 32 are symmetrically distributed;

[0047] The skeleton oil seal 32 is adhesively bonded doubly between the rotor shaft 16 and the inner surface of the housing 11, achieving a sealing effect.

[0048] A gasket 31 is connected to the inner surface of the housing 11 by adhesive bonding, and the gasket 31 is connected between the inner surface of the sealing plate 28 and the inner surface of the housing 11;

[0049] The inner gasket 31 will be adhesively bonded doubly between the inner surface of the housing 11 and the inner surface of the sealing plate 28, achieving a sealing effect.

[0050] Working principle: First, the interior of the traditional housing 11 only has a single sealing structure. With the provided skeleton oil seal 32, and the skeleton oil seal 32 is adhesively bonded doubly between the rotor shaft 16 and the inner surface of the housing 11, while the inner gasket 31 will be adhesively bonded doubly between the inner surface of the housing 11 and the inner surface of the sealing plate 28. When the external structure is docked with the rotor shaft 16, a double-sealing effect can be achieved through the gasket 31 and the skeleton oil seal 32.

[0051] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. The double-seal of the Shougang variable-frequency motor is characterized in that Comprising: A body component, the body component including a housing (11) and a rotor shaft (16); A reinforcement component, the reinforcement component including a sealing ring (21), an inner groove (22), a hole body (23), a sealing plug (24), a guide rod (25), a guide ring (26), a limit block (27) and a sealing plate (28); The sealing plate (28) is connected to both sides of the outer surface of the housing (11). In the middle of one side of the outer surface of the sealing plate (28), an inner groove (22) is provided. On the inner surface circumference of the inner groove (22), hole bodies (23) are equidistantly provided. On one side of the outer surface of the sealing plate (28), a sealing ring (21) is connected. On the outer surface circumference of the sealing ring (21), sealing plugs (24) are equidistantly connected. The sealing plugs (24) are connected to the inside of the hole bodies (23) by means of embedding.

2. The double seal of the Shougang variable frequency motor according to claim 1, wherein On one side of the outer surface of the sealing plate (28), a plurality of guide rods (25) are connected. On the outer surface of the sealing ring (21), a plurality of guide rings (26) are connected. The guide rings (26) are connected to the outer surface of the guide rods (25).

3. The double-seal of the Shougang variable-frequency motor according to claim 1, wherein On one side of the outer surface of the guide rod (25), a limit block (27) is fixedly connected. The sealing ring (21) fits on the outer surface of the inside of the inner groove (22).

4. The double seal of the Shougang variable frequency motor according to claim 1, characterized in that, The body component further includes a stator (12), a motor rotor (13), end covers (14), bearings (15) and a rotor shaft (16); On the upper part of the inner surface of the housing (11), a stator (12) is connected. At the bottom of the stator (12), an end cover (14) is connected. And the rotor shaft (16) is connected to the middle of both sides of the outer surface of the housing (11). At one end of the outer surface of the rotor shaft (16), a bearing (15) is connected.

5. The double seal of the Shougang variable frequency motor according to claim 4, characterized in that, It further includes a sealing component, the sealing component including a sealing gasket (31) and a skeleton oil seal (32); At one end of the outer surface of the rotor shaft (16), a skeleton oil seal (32) is connected by means of bonding. The skeleton oil seals (32) are symmetrically distributed.

6. The double seal of the Shougang variable frequency motor according to claim 5, characterized in that, On the inner surface of the housing (11), a sealing gasket (31) is connected by means of bonding. The sealing gasket (31) is connected between the inner surface of the sealing plate (28) and the inner surface of the housing (11).

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