Liquid-cooled ultrahigh rotating speed liquid conductive slip ring

Abstract

The utility model provides a liquid-cooled ultrahigh rotation speed liquid conductive slip ring, which belongs to the technical field of conductive slip rings, and comprises a shell, a bearing, a rotor shaft and a stator shaft, the stator shaft is arranged at one end of the shell, the rotor shaft is rotatably arranged at the other end of the shell through the bearing, a cooling liquid flow channel is arranged in the shell around the periphery of the bearing, and the cooling liquid flow channel is communicated with the stator shaft. A cooling liquid opening communicated with the cooling liquid flow channel is formed in the cooling liquid flow channel; the cooling liquid flow channel is arranged in the shell, and the cooling liquid opening is formed in the cooling liquid flow channel, so that cooling liquid can be effectively introduced for heat dissipation, heat accumulation generated when a bearing and a sealing piece rotate at a high speed is reduced, the overheating condition is prevented, lubrication failure and part abrasion caused by overheating are reduced, and the service life of the bearing is prolonged. Therefore, the service life of the slip ring is prolonged and the reliability of the conductive slip ring is improved.

Description

Technical Field

[0001] This utility model relates to the field of conductive slip ring technology, specifically to a liquid-cooled ultra-high speed liquid conductive slip ring. Background Technology

[0002] A slip ring is an electrical component responsible for connecting and transmitting energy and signals to a rotating body. Based on the transmission medium, slip rings are classified as electrical slip rings, fluid slip rings, and smooth slip rings, and can also be commonly referred to as "rotational connection" or "rotary connection." Slip rings are typically installed at the center of rotation of equipment and mainly consist of two parts: a rotating part and a stationary part. The rotating part connects to the rotating structure of the equipment and rotates with it, called the "rotor," while the stationary part connects to the power source of the fixed structure of the equipment, called the "stator." It should be understood that rotors and stators are interchangeable in practical use; there is no strict distinction between rotor and stator. This distinction is used here for clarity.

[0003] In existing conductive slip rings, the rotor is typically mounted within the housing via bearings and transmits current or signals during high-speed rotation. However, high-speed rotation increases friction at both the seals and bearings, generating significant heat and potentially leading to overheating of seals and bearings, lubricant failure, accelerated component wear, and overall performance degradation. Effectively reducing heat accumulation at the seals and bearings during high-speed operation of the conductive slip ring, thus ensuring its long-term stable operation, is a pressing technical challenge that needs to be addressed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a liquid-cooled ultra-high speed liquid conductive slip ring.

[0005] The technical solution adopted by this utility model is as follows: This application provides a liquid-cooled ultra-high speed liquid conductive slip ring, including a housing, a bearing, a rotor shaft and a stator shaft. The stator shaft is disposed at one end of the housing, and the rotor shaft is rotatably disposed at the other end of the housing through the bearing. A coolant flow channel is provided inside the housing around the outer periphery of the bearing, and a coolant port communicating with the coolant flow channel is provided thereon.

[0006] In some embodiments, the bearings are single-row bearings with at least two bearings, bearing spacers are provided between the end faces of adjacent bearings, and the coolant channels cover the outer peripheral walls of all bearings.

[0007] In some embodiments, the outer diameter of the bearing spacer is smaller than the outer diameter of the bearing.

[0008] In some embodiments, a first sealing sleeve and a second sealing sleeve are spaced apart on the rotor shaft, and the bearings are all located between the first sealing sleeve and the second sealing sleeve. The first sealing sleeve is located at the end away from the stator shaft, and the second sealing sleeve is located at the end close to the stator shaft. A first rotary seal and a second rotary seal are provided inside the housing corresponding to the first sealing sleeve and the second sealing sleeve, and form a sealing fit with the corresponding sealing sleeve.

[0009] In some embodiments, both the first rotary seal and the second rotary seal are skeleton oil seals, magnetic oil seals, double-lip oil seals, or rotary Glyd rings.

[0010] In some embodiments, a bearing cover is provided at one end of the rotor shaft on the housing, one end of the bearing cover extends into the housing and abuts against the bearing, a first rotary seal is provided on the bearing cover, and a first sealing ring is provided between its outer periphery and the bearing cover, and a second sealing ring is provided between the outer periphery of the second rotary seal and the housing.

[0011] In some embodiments, the bearing cover includes a connecting disc portion, and a third sealing ring is provided between the lower end face of the connecting disc portion and the outer casing.

[0012] In some embodiments, a groove is provided at one end of the stator shaft facing the rotor shaft, and one end of the rotor shaft is inserted into the groove to form a dielectric cavity therewith. A conductive medium is provided in the dielectric cavity, and the conductive medium is mercury and / or liquid gallium indium tin alloy.

[0013] In some embodiments, the rotor shaft includes a first shaft portion, a second shaft portion, and a third shaft portion with sequentially increasing outer diameters. The first sealing bushing and each bearing are disposed in the first shaft portion, the second sealing bushing is disposed in the second shaft portion, and the third shaft portion is inserted into a groove.

[0014] In some embodiments, an upper cavity is formed between the first rotary seal and the bearing, and a lower cavity is formed between the second rotary seal and the bearing, wherein the coolant flow channel connects the upper cavity and the lower cavity.

[0015] The beneficial effects of this utility model are as follows: By setting a coolant flow channel inside the outer shell and setting a coolant port on it, coolant can be effectively introduced for heat dissipation, which helps to reduce the heat accumulation generated by bearings and seals during high-speed rotation, prevent overheating, reduce lubrication failure and component wear caused by overheating, thereby extending the service life of the slip ring and improving the reliability of the conductive slip ring. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a cross-sectional view of a liquid-cooled ultra-high speed liquid conductive slip ring according to the present invention;

[0018] Figure 2 This is a partial cross-sectional view of a liquid-cooled ultra-high speed liquid conductive slip ring according to the present invention. Figure 1 ;

[0019] Figure 3 This is a partial cross-sectional view of a liquid-cooled ultra-high speed liquid conductive slip ring according to the present invention. Figure 2 ;

[0020] Figure 4 This is a partial cross-sectional view of a liquid-cooled ultra-high speed liquid conductive slip ring according to the present invention. Figure 3 . Detailed Implementation

[0021] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0023] Secondly, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components and should not be construed as limiting the embodiments of this application.

[0024] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral constructions; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0025] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0027] In existing conductive slip ring designs, high-speed rotation can increase friction between the seal and the bearing, generating a large amount of heat. This can lead to overheating of the seal and bearing, lubrication failure, accelerated wear of components, and even affect the overall performance and service life of the conductive slip ring.

[0028] Based on the above problems, this specification provides a liquid-cooled ultra-high speed liquid conductive slip ring, including a housing 1, a bearing 2, a rotor shaft 3, and a stator shaft 4. The stator shaft 4 is disposed at one end of the housing 1, and the rotor shaft 3 is rotatably disposed at the other end of the housing 1 via the bearing 2. A coolant channel 50 is provided inside the housing 1 around the outer periphery of the bearing 2, and a coolant port 51 communicating with the coolant channel 50 is provided on it. By providing a coolant channel 50 inside the housing 1 and a coolant port 51 on it, coolant can be effectively introduced for heat dissipation, which helps to reduce the heat accumulation generated by the bearing 2 and the rotor shaft 3 during high-speed rotation, prevents overheating, reduces lubrication failure and component wear caused by overheating, thereby extending the service life of the slip ring and improving the reliability of the conductive slip ring.

[0029] In some embodiments, the bearing 2 is a single-row bearing and there are at least two of them, such as... Figure 1 and Figure 2 As shown, there are two bearings 2, which reduces the load distribution on a single bearing 2, avoids situations with low coaxiality, thereby reducing the risk of wear and overheating, and improving the overall operational stability. It should be understood that double-row ball bearings can also be used, in which case at least one bearing would be required.

[0030] Secondly, a bearing spacer 6 is provided between the end faces of adjacent bearings 2. The bearing spacer 6 helps to reduce the vibration transmission between bearings 2 and reduce the noise generated during operation, which is especially important for high-speed operating devices.

[0031] The coolant flow channel 50 covers the outer peripheral wall of all bearings 2, ensuring that each bearing 2 can be effectively cooled, allowing for more uniform heat dissipation, avoiding excessive local temperature rise, and further preventing the bearings 2 from overheating.

[0032] In some embodiments, the outer diameter of the bearing spacer 6 is smaller than the outer diameter of the bearing 2, thereby ensuring that the coolant can effectively cover and cool the bearing 2, reducing local "cooling blind spots" formed by the obstruction of the bearing spacer 6.

[0033] In some embodiments, a first sealing sleeve 7 and a second sealing sleeve 8 are spaced apart on the rotor shaft 3, and the bearings 2 are all located between the first sealing sleeve 7 and the second sealing sleeve 8. The first sealing sleeve 7 is located at the end away from the stator shaft 4, and the second sealing sleeve 8 is located at the end close to the stator shaft 4. A first rotary seal 9 and a second rotary seal 10 are provided inside the housing 1 corresponding to the first sealing sleeve 7 and the second sealing sleeve 8, and form a sealing fit with the corresponding sealing sleeves. This can form a double sealing barrier, effectively preventing lubricant leakage and external contaminants from entering the bearing area, ensuring the cleanliness of the internal environment and the normal operation of the equipment.

[0034] Secondly, an upper cavity is formed between the first rotary seal 9 and the bearing 2, and a lower cavity is formed between the second rotary seal 10 and the bearing 2. The coolant flow channel 50 connects the upper cavity and the lower cavity, which can reduce the heat generated by the high-speed rotation at the first rotary seal 9 and the second rotary seal 10.

[0035] Both the first rotary seal 9 and the second rotary seal 10 employ skeleton oil seals, magnetic oil seals, double-lip oil seals, or rotary Glyd rings, etc. Figures 1 to 4 As shown, both the first rotary seal 9 and the second rotary seal 10 are double-lip skeleton oil seals.

[0036] In some embodiments, a bearing cover 11 is provided at one end of the rotor shaft 3 on the housing 1. One end of the bearing cover 11 extends into the housing 1 and presses against the bearing 2. A first rotary seal 9 is provided on the bearing cover 11, and a first sealing ring 12 is provided between its outer periphery and the bearing cover 11. A second sealing ring 13 is provided between the outer periphery of the second rotary seal 10 and the housing 1. The bearing cover 11 ensures the accurate positioning and solid support of the bearing 2 in the housing 1, reduces the movement and vibration of the bearing 2 during operation, thereby improving the stability and operating accuracy of the equipment. Furthermore, the bearing cover 11 has a simple design, is easy to install and disassemble, and facilitates the rapid assembly and maintenance of the equipment.

[0037] Among them, the first sealing ring 12 and the second sealing ring 13 are O-rings.

[0038] Secondly, the bearing cover 11 includes a connecting disc portion 110, and a third sealing ring 14 is provided between the lower end face of the connecting disc portion 110 and the outer shell 1. The connecting disc portion 110 is connected to the outer shell 1 by fasteners. The third sealing ring 14 is an O-ring, which improves the sealing performance between the outer shell 1 and the bearing cover 11.

[0039] In some embodiments, a groove 400 is provided at one end of the stator shaft 4 facing the rotor shaft 3, and one end of the rotor shaft 3 is inserted into the groove 400 to form a dielectric cavity therewith. A conductive medium 15 is provided in the dielectric cavity. With this arrangement, the presence of the conductive medium can reduce the contact resistance between the shafts, thereby improving the current transmission efficiency.

[0040] Secondly, the rotor shaft 3 is inserted into the groove 400 of the stator shaft 4 to form a stable mechanical connection, which can effectively reduce the relative movement between the rotor shaft 3 and the stator shaft 4 and improve the mechanical stability and smooth operation of the device.

[0041] In some embodiments, the conductive medium 15 is made of mercury and / or liquid gallium indium tin alloy, which has excellent conductivity and can ensure efficient current transmission between the stator shaft 4 and the rotor shaft 3.

[0042] In some embodiments, the rotor shaft 3 includes a first shaft portion 301, a second shaft portion 302, and a third shaft portion 303 with sequentially increasing outer diameters. The first sealing bushing 7 and each bearing 2 are disposed in the first shaft portion 301, the second sealing bushing 8 is disposed in the second shaft portion 302, and the third shaft portion 303 is inserted into the groove 400. With this arrangement, each part has a clear functional area, which helps to ensure the orderly installation and functional realization of the components and facilitates rapid assembly.

[0043] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0044] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0045] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. A liquid-cooled ultra-high speed liquid conductive slip ring, characterized in that, It includes a housing (1), a bearing (2), a rotor shaft (3) and a stator shaft (4). The stator shaft (4) is located at one end of the housing (1), and the rotor shaft (3) is rotatably located at the other end of the housing (1) via the bearing (2). A coolant channel (50) is provided inside the housing (1) around the outer periphery of the bearing (2), and a coolant port (51) communicating with the coolant channel (50) is provided on it.

2. The liquid-cooled ultra-high speed liquid conductive slip ring according to claim 1, characterized in that, The bearing (2) is a single-row bearing with at least two bearings. A bearing spacer (6) is provided between the end faces of adjacent bearings (2). The coolant channel (50) covers the outer peripheral wall of all bearings (2).

3. The liquid-cooled ultra-high speed liquid conductive slip ring according to claim 2, characterized in that, The outer diameter of the bearing spacer (6) is smaller than the outer diameter of the bearing (2).

4. A liquid-cooled ultra-high speed liquid conductive slip ring according to claim 1 or 2, characterized in that, The rotor shaft (3) is provided with a first sealing sleeve (7) and a second sealing sleeve (8) spaced apart. The bearings (2) are all located between the first sealing sleeve (7) and the second sealing sleeve (8). The first sealing sleeve (7) is located at the end away from the stator shaft (4), and the second sealing sleeve (8) is located at the end close to the stator shaft (4). The housing (1) is provided with a first rotary seal (9) and a second rotary seal (10) corresponding to the first sealing sleeve (7) and the second sealing sleeve (8), and they form a sealing fit with the corresponding sealing sleeves.

5. A liquid-cooled ultra-high speed liquid conductive slip ring according to claim 4, characterized in that, Both the first rotary seal (9) and the second rotary seal (10) are skeleton oil seals, magnetic oil seals, double-lip oil seals, or rotary Glyd rings.

6. A liquid-cooled ultra-high speed liquid conductive slip ring according to claim 4, characterized in that, The outer casing (1) is provided with a bearing cover (11) at one end of the rotor shaft (3). One end of the bearing cover (11) extends into the outer casing (1) and presses against the bearing (2). The first rotary seal (9) is provided on the bearing cover (11), and a first sealing ring (12) is provided between its outer periphery and the bearing cover (11). A second sealing ring (13) is provided between the outer periphery of the second rotary seal (10) and the outer casing (1).

7. A liquid-cooled ultra-high speed liquid conductive slip ring according to claim 6, characterized in that, The bearing cover (11) includes a connecting disc (110), and a third sealing ring (14) is provided between the lower end face of the connecting disc (110) and the outer shell (1).

8. A liquid-cooled ultra-high speed liquid conductive slip ring according to claim 4, characterized in that, The stator shaft (4) has a groove (400) at one end facing the rotor shaft (3). One end of the rotor shaft (3) is inserted into the groove (400) and forms a dielectric cavity therewith. A conductive medium (15) is provided in the dielectric cavity. The conductive medium (15) is mercury and / or liquid gallium indium tin alloy.

9. A liquid-cooled ultra-high speed liquid conductive slip ring according to claim 8, characterized in that, The rotor shaft (3) includes a first shaft portion (301), a second shaft portion (302), and a third shaft portion (303) with increasing outer diameters. The first sealing bushing (7) and each bearing (2) are disposed in the first shaft portion (301), the second sealing bushing (8) is disposed in the second shaft portion (302), and the third shaft portion (303) is inserted into a groove (400).

10. A liquid-cooled ultra-high speed liquid conductive slip ring according to claim 4, characterized in that, An upper cavity is formed between the first rotary seal (9) and the bearing (2), and a lower cavity is formed between the second rotary seal (10) and the bearing (2). The coolant flow channel (50) connects the upper cavity and the lower cavity.

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