Energy-saving oil-cooled motor with anti-throwing seal

Abstract

The application provides an energy-saving oil-cooled motor with anti-throwing sealing and belongs to the technical field of cable joints. The motor comprises a cable, a gland head is sleeved and fixed on the outer wall of the front end of the cable, a connecting ring is threadedly connected to the bottom of the gland head, and a fixing ring is fixedly connected to the bottom of the connecting ring. The metal sheet is arranged to isolate part of the heat transmitted by the motor. When the remaining heat is transmitted to the rubber ring II, the heat is cooled by the internal cooling oil. The rubber ring at the bottom of the core wire groove can be separated to facilitate installation on the core wire, and then the core wire is inserted into the core wire groove. Then, the outer wall of the core wire is blocked to prevent water vapor or moisture at the bottom from entering the device through the core wire groove. Meanwhile, the sealing ring I in the gland head and the sealing ring II in the fixing ring seal the top of the gland head and the motor to prevent hot oil in the motor from flowing into the device. Thus, the device is resistant to oil and high and low temperatures, and the limited sealing and effective shielding of the product are realized.

Description

Technical Field

[0001] This invention relates to the field of cable joint technology, and in particular to an energy-saving oil-cooled motor with anti-spin seal. Background Technology

[0002] Oil-cooled motors, with their core advantages of efficient heat dissipation and high power density, have become key power sources in fields such as new energy vehicle drive systems, high-end precision machine tools, and aerospace auxiliary equipment. As industry demands for equipment performance continue to rise, the operating speed of oil-cooled motors is constantly increasing, generally requiring stable operation for extended periods at high speeds of 15,000-30,000 rpm, with some extreme scenarios even exceeding 35,000 rpm. This poses stringent challenges to the structural stability and sealing reliability of the entire machine. The internal cables of the motor (including stator winding leads, temperature / speed sensor signal lines, control signal lines, etc.), as crucial carriers of energy transmission and signal interaction, must penetrate the motor housing to connect with the external control system. This makes the point where the cables pass through the motor housing a critical weak point in the sealing protection. During high-speed rotation, the cables are subjected to centrifugal forces tens of times greater than gravity, resulting in violent swaying. This swaying is not a unidirectional swing but a high-frequency, multi-directional displacement accompanying the motor rotation, directly applying continuous dynamic impact to the sealing structure at the penetration point.

[0003] In existing technologies, traditional sealing solutions often employ a single sealing ring or a simple compaction structure, which has several drawbacks: First, high-frequency oscillation causes continuous friction and relative displacement between the cable and the sealing element, leading to a gradual widening of the sealing gap and ultimately resulting in hot oil leakage inside the motor. Second, the selection of sealing materials lacks specificity; ordinary rubber materials are prone to aging, hardening, and cracking under the high temperatures (typically 120-180℃) and hot oil immersion generated by motor operation, further losing their sealing performance and creating a vicious cycle of "high temperature accelerating aging - sealing failure - increased oil leakage." Third, the sealing and heat dissipation designs are disconnected; the heat accumulated at the sealing point cannot be effectively dissipated, which not only accelerates the aging of the sealing material but may also affect the stability of the cable insulation layer, and even cause signal transmission interference or short circuit risks.

[0004] Therefore, this application provides an energy-saving oil-cooled motor with anti-spin seal to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an energy-saving oil-cooled motor with anti-spinning seal to solve the problem that when existing cables are subjected to centrifugal force, pressure is applied to the cables outward, which causes oil leakage in the motor. At the same time, the heat accumulated in the sealing part cannot be effectively dissipated, which not only accelerates the aging of the sealing material, but may also affect the stability of the cable insulation layer, and even cause signal transmission interference or short circuit risk.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] An energy-saving oil-cooled motor with anti-slip seal includes a cable. A gland is fixedly sleeved on the outer wall of the cable's front end. A connecting ring is threaded to the bottom of the gland. A fixing ring is fixedly connected to the bottom of the connecting ring. An oil tank is sleeved on the outer wall of the bottom of the connecting ring. The bottom of the oil tank is fixedly connected to the top of the fixing ring. A sealing disc is provided on the inner wall of the bottom of the fixing ring. A rubber ring I is provided on the outer wall of the sealing disc. An arc-shaped groove I is formed on the outer side of the top of the first rubber ring. A second rubber ring is provided on the top of the first rubber ring. An arc-shaped groove II is formed on the outer side of the bottom of the second rubber ring. The second arc-shaped groove II engages with the first arc-shaped groove. The inner side of the top of the second rubber ring has an arc-shaped groove three. The top of the second rubber ring has a metal ring. A convex ring is fixedly installed on the outer side of the bottom of the metal ring. The convex ring is engaged with the arc-shaped groove three. Metal posts are fixedly installed on both sides of the top of the metal ring. The top of the sealing plate has a core wire groove. A rubber ring is inserted into the bottom of the core wire groove. An arc-shaped strip one is fixedly installed on one side of the bottom of the rubber ring. A slot is opened on the top of the arc-shaped strip one. An arc-shaped strip two is rotatably connected to the bottom of the arc-shaped strip one. The top of the arc-shaped strip two is fixedly connected to the bottom of the rubber ring. An insert block is fixedly connected to the top of the arc-shaped strip two. The insert block is inserted into the slot.

[0008] Optionally, the top of the fuel tank is provided with a protective cover, and the top of the fuel tank is threadedly connected with a fuel tank cover, which is inserted into the protective cover.

[0009] Optionally, an oil pipe is fixedly connected to the top of the second rubber ring, and the top of the oil pipe is fixedly connected to the bottom of the oil tank.

[0010] Optionally, a second sealing ring is provided at the top of the inner wall of the fixing ring, and a third sealing ring is provided at the top of the outer wall of the fixing ring.

[0011] Optionally, a positioning ring is fixedly installed on the inner wall of the bottom of the fixing ring, and the bottom of the positioning ring is inserted into the top of the metal column.

[0012] Optionally, a sealing ring is provided at the top of the inner wall of the gland, and the bottom of the sealing ring contacts the top surface of the connecting ring.

[0013] Optionally, the outer wall of the sealing ring is provided with a striking ring, and the top of the striking ring is fixedly connected to the inner wall of the gland head.

[0014] Optionally, an annular groove is formed on the inner wall of the bottom of the connecting ring, and a shielding mesh is provided inside the annular groove.

[0015] Optionally, a shielding ring is fixedly installed on the top of the shielding mesh, and the top of the shielding ring contacts the bottom surface of the impact ring.

[0016] Optionally, a connector is fixedly connected to the end of the cable.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above solution, a triple sealing structure consisting of sealing ring one, sealing ring two, and sealing ring three precisely fits the key connection points of the gland head and the fixing ring. This structure can resist the strong centrifugal force generated by high-speed rotation, prevent the sealing gap from widening due to cable swinging, and effectively block the leakage of hot oil from the motor. At the same time, the squeezing and matching design of the impact ring and the shielding ring can compact the shielding mesh in the annular groove, forming a double protection of "sealing + shielding". This prevents the gas in the cavity from carrying hot oil and overflowing along the shielding wire, while ensuring the stable connection of the shielding function. Then, the detachable plug-in structure of the rubber ring and the arc strips one and two can not only fit tightly against the outer wall of the core wire, but also be firmly fixed by friction, completely blocking the intrusion of impurities such as water vapor and dust at the bottom through the core wire groove, thus improving the sealing performance of the device in complex environments.

[0019] By setting up a metal ring and a second rubber ring, the metal ring can first isolate most of the heat conducted by the motor, reducing the heat transfer to the sealing components and reducing the aging and wear of the sealing material due to high temperature. When the remaining heat is transferred to the second rubber ring, the cooling oil stored inside can quickly absorb the heat and cool down, preventing the sealing structure from failing due to high temperature. At the same time, the second rubber ring, through its thermal expansion and contraction characteristics, works with the oil pipe and oil tank to form an automatic circulation system: it absorbs the cooling oil in the oil tank when it heats up and releases the excess cooling oil when it cools down, achieving continuous heat dissipation without additional power, which saves energy and extends the service life of the components. Then, the protective cover on the top of the oil tank has heat dissipation holes, which can assist the oil tank in heat dissipation and prevent the cooling oil itself from heating up and affecting the cooling effect, forming a dual guarantee of "active cooling + passive heat dissipation".

[0020] By setting a positioning ring, the core wire can be positioned and separated, avoiding seal damage caused by core wire entanglement and friction. It can also increase friction by contacting the rough surface of the metal column, further enhancing the stability of the sealing structure and resisting centrifugal force impact. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0022] Figure 1 A schematic diagram of the overall structure of an energy-saving oil-cooled motor with anti-spin seal;

[0023] Figure 2 A schematic diagram of the overall structure of the cable, gland, connecting ring, retaining ring, and connector;

[0024] Figure 3 A cross-sectional structural diagram showing the cable, gland, connecting ring, retaining ring, impact ring, and sealing ring.

[0025] Figure 4 This is a cross-sectional structural diagram showing the connector, annular groove, shielding mesh, shielding ring, protective cover, and fixing ring.

[0026] Figure 5 A cross-sectional disassembled structural diagram of the fuel tank, protective cover, and fuel tank cap;

[0027] Figure 6 A cross-sectional structural diagram showing the fixed ring, sealing ring II, sealing ring III, positioning ring, and sealing disc.

[0028] Figure 7 A cross-sectional structural diagram showing the top positioning ring, rubber ring one, rubber ring two, metal ring, metal column, and sealing disc.

[0029] Figure 8 A schematic diagram showing the cross-sectional structure of rubber ring 1, rubber ring 2, metal ring, metal column, arc groove 1, arc groove 2, arc groove 3, and convex ring;

[0030] Figure 9 This is a schematic diagram showing the cross-sectional structure of the sealing disc, rubber ring, arc-shaped strip one, and arc-shaped strip two.

[0031] Figure 10 This is a schematic diagram of the cross-sectional structure of the rubber ring, arc-shaped strip one, and arc-shaped strip two.

[0032] Figure label:

[0033] 100. Cable; 101. Connector; 110. Gland; 111. Sealing Ring 1; 112. Impact Ring; 120. Connecting Ring; 121. Annular Groove; 122. Shielding Mesh; 123. Shielding Ring; 200. Fixing Ring; 201. Sealing Ring 2; 202. Sealing Ring 3; 203. Positioning Ring; 210. Oil Tank; 211. Protective Cover; 212. Oil Tank Cap; 213. Oil Pipe; 220. Sealing Disc; 221. Rubber Ring 1; 222. Arc Groove 1; 223. Rubber Ring 2; 224. Arc Groove 2; 225. Arc Groove 3; 226. Metal Ring; 227. Convex Ring; 228. Metal Post; 229. Core Wire Groove; 230. Rubber Ring; 231. Arc Strip 1; 232. Slot; 233. Arc Strip 2; 234. Insert Block.

[0034] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0035] The present invention provides an energy-saving oil-cooled motor with anti-spinning seal, which is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0036] like Figures 1 to 10As shown, an embodiment of the present invention provides an energy-saving oil-cooled motor with anti-spin seal, including a cable 100. A gland 110 is fixedly sleeved on the outer wall of the front end of the cable 100. A connecting ring 120 is threaded to the bottom of the gland 110. A fixing ring 200 is fixedly connected to the bottom of the connecting ring 120. An oil tank 210 is sleeved on the outer wall of the bottom of the connecting ring 120. The bottom of the oil tank 210 is fixedly connected to the top of the fixing ring 200. A sealing disc 220 is provided on the inner wall of the bottom of the fixing ring 200. A rubber ring 221 is provided on the outer wall of the sealing disc 220. An arc groove 222 is opened on the outer side of the top of the rubber ring 221. A rubber ring 223 is provided on the top of the rubber ring 221. An arc groove 224 is opened on the outer side of the bottom of the rubber ring 223. The arc groove 224 and the arc groove 224 are connected. 222 is snap-fitted. An arc-shaped groove 225 is formed on the inner side of the top of rubber ring 223. A metal ring 226 is formed on the top of rubber ring 223. A protruding ring 227 is fixedly installed on the outer side of the bottom of metal ring 226. The protruding ring 227 snaps into the arc-shaped groove 225. Metal posts 228 are fixedly installed on both sides of the top of metal ring 226. A core wire groove 229 is formed on the top of sealing disc 220. A rubber ring 230 is inserted into the bottom of core wire groove 229. An arc-shaped strip 231 is fixedly installed on one side of the bottom of rubber ring 230. A slot 232 is formed on the top of arc-shaped strip 231. An arc-shaped strip 233 is rotatably connected to the bottom of arc-shaped strip 231. The top of arc-shaped strip 233 is fixedly connected to the bottom of rubber ring 230. An insert block 234 is fixedly connected to the top of arc-shaped strip 233. Cable 234 is inserted into slot 232. The inner and outer layers of cable 100 are made of Teflon to ensure the product meets high and low temperature resistance and oil resistance requirements. Sealing rings 111, 201, and 202 are all made of hydrogenated nitrile rubber to ensure good oil resistance. Oil tank 210 is used to supply cooling oil to the interior of rubber ring 223. Rubber ring 223 is hollow to facilitate the storage of cooling oil. Rubber rings 221 and 223 are fixed to the fixing ring 200 by friction. Meanwhile, the surface of the metal post 228 on the top of metal ring 226 is roughened to increase the friction between metal ring 226, rubber rings 221 and 223, and the positioning ring 203. The metal sheet is made of corrosion-resistant and high-temperature resistant material. To isolate some of the heat transmitted from the top motor of the gland 110, the remaining heat is transferred to the rubber ring 223. The cooling oil inside the rubber ring 223 can cool it down. At the same time, the thermal expansion and contraction of the rubber ring 223 can absorb or release the cooling oil in the oil tank 210, keeping the cooling oil in a circulating state to cool the cable 100. The rubber ring 230 at the bottom of the core wire groove 229 can be opened by rotating the arc strip 231 or the arc strip 233 to install it on the core wire at the bottom of the cable 100. Then it is inserted into the core wire groove 229. The friction of the rubber ring 230 fixes the rubber ring 230, arc strip 231, and arc strip 233 in the core wire groove 229, thus blocking the outer wall of the core wire.This is to prevent moisture or humidity from entering the device through the core wire groove 229.

[0037] like Figures 2 to 6 As shown, the top of the oil tank 210 is provided with a protective cover 211, and the top of the oil tank 210 is threadedly connected to an oil tank cover 212, which is inserted into the protective cover 211. A rubber ring 223 is fixedly connected to the top of an oil pipe 213, and the top of the oil pipe 213 is fixedly connected to the bottom of the oil tank 210. A sealing ring 201 is provided on the top of the inner wall of the fixing ring 200, and a sealing ring 202 is provided on the top of the outer wall of the fixing ring 200. A positioning ring 203 is fixedly installed on the inner wall of the bottom of the fixing ring 200, and the bottom of the positioning ring 203 is inserted into the top of the metal column 228. A sealing ring 111 is provided on the top of the inner wall of the gland 110, and the bottom of the sealing ring 111 contacts the top surface of the connecting ring 120. A striking ring 112 is provided on the outer wall of the sealing ring 111, and the top of the striking ring 112 is fixedly connected to the inner wall of the gland 110. An annular groove 121 is formed on the inner wall of the bottom of the connecting ring 120, and the annular groove 121 contains... The shielding mesh 122 has a shielding ring 123 fixedly installed on its top. The top of the shielding ring 123 contacts the bottom surface of the impact ring 112. The end of the cable 100 is fixedly connected to a connector 101. The protective cover 211 has many holes to facilitate heat dissipation from the oil tank 210. The oil pipe 213 is inserted into the fixing ring 200, the sealing ring 201, and the positioning ring 203, and then fixed to the rubber ring 223 so that the cooling oil in the oil tank 210 can flow into the rubber ring 223 through the oil pipe 213. The positioning ring 203 is used to position and separate the core wire in the cable 100. There is a gap between the impact ring 112 and the inside of the gland 110 so that the impact ring 112 will hit the shielding ring 123 when the gland 110 rotates downward, so that the shielding ring 123 will squeeze the shielding mesh 122 to prevent gas and hot oil in the cavity from overflowing along the shielding wire.

[0038] The working principle of the technical solution provided by this invention is as follows:

[0039] The metal sheet at the bottom of the retaining ring 200 isolates part of the heat transmitted from the motor at the top of the gland 110. When the remaining heat is transferred to the rubber ring 223, the cooling oil inside the rubber ring 223 can cool it down. At the same time, the thermal expansion and contraction of the rubber ring 223 can absorb or release the cooling oil in the oil tank 210, keeping the cooling oil in a circulating state to facilitate cooling of the cable 100. The rubber ring 230 at the bottom of the core wire groove 229 can be opened by rotating the arc-shaped strip 231 or the arc-shaped strip 233 to facilitate installation on the core wire at the bottom of the cable 100. The core wire is inserted into the core wire groove 229. The friction of the rubber ring 230 fixes the rubber ring 230, arc strip 1 231 and arc strip 233 into the core wire groove 229. Then, the outer wall of the core wire is blocked to prevent water vapor or moisture from the bottom from entering the device through the core wire groove 229. At the same time, the sealing ring 111 inside the gland 110 and the sealing ring 201 inside the fixing ring 200 seal the motor at the top of the gland 110 to prevent hot oil from flowing into the device. This achieves the effect of oil resistance and high and low temperature resistance of the device, as well as effective connection of limited sealing and shielding of the product.

[0040] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0041] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An energy efficient oil cooled electric machine with anti-fling seal, characterized in that, The utility model provides an improved cable (100), which comprises a Luer (110) fixedly connected to the outer wall of the front end of the cable (100), a connecting ring (120) threadedly connected to the bottom of the Luer (110), a fixing ring (200) fixedly connected to the bottom of the connecting ring (120), an oil tank (210) sleeved on the outer wall of the bottom of the connecting ring (120), the bottom of the oil tank (210) being fixedly connected to the top of the fixing ring (200), a sealing disc (220) arranged on the inner wall of the bottom of the fixing ring (200), a rubber ring I (221) arranged on the outer wall of the sealing disc (220), an arc-shaped groove I (222) formed on the top of the rubber ring I (221), a rubber ring II (223) arranged on the top of the rubber ring I (221), an arc-shaped groove II (224) formed on the outer side of the bottom of the rubber ring II (223), the arc-shaped groove II (224) being connected to the arc-shaped groove I (222), an arc-shaped groove III (225) formed on the inner side of the top of the rubber ring II (223), a metal ring (226) arranged on the top of the rubber ring II (223), a convex ring (227) fixedly arranged on the outer side of the bottom of the metal ring (226), the convex ring (227) being connected to the arc-shaped groove III (225), metal columns (228) fixedly arranged on the top of the metal ring (226), a core wire groove (229) formed on the top of the sealing disc (220), a rubber ring (230) inserted into the bottom of the core wire groove (229), an arc-shaped strip I (231) fixedly arranged on one side of the bottom of the rubber ring (230), an insertion groove (232) formed on the top of the arc-shaped strip I (231), an arc-shaped strip II (233) rotatably connected to the bottom of the arc-shaped strip I (231), the top of the arc-shaped strip II (233) being fixedly connected to the bottom of the rubber ring (230), an insertion block (234) fixedly connected to the top of the arc-shaped strip II (233), the insertion block (234) being inserted into the insertion groove (232). The top of the oil tank (210) is provided with a protective cover (211), and the top of the oil tank (210) is threadedly connected with an oil tank cover (212), the oil tank cover (212) being inserted into the protective cover (211). The top of the rubber ring II (223) is fixedly connected with an oil pipe (213), and the top of the oil pipe (213) is fixedly connected to the bottom of the oil tank (210). The top of the inner wall of the fixing ring (200) is provided with a sealing ring II (201), and the top of the outer wall of the fixing ring (200) is provided with a sealing ring III (202). The bottom of the inner wall of the fixing ring (200) is fixedly provided with a positioning ring (203), and the bottom of the positioning ring (203) is inserted into the top of the metal column (228). The top of the inner wall of the Luer (110) is provided with a sealing ring I (111), and the bottom of the sealing ring I (111) is in contact with the top surface of the connecting ring (120).

2. The energy efficient oil-cooled electric machine with anti-throwing seal according to claim 1, characterized in that, The outer wall of the sealing ring I (111) is provided with a striking ring (112), and the top of the striking ring (112) is fixedly connected to the inner wall of the Luer (110).

3. The energy efficient oil-cooled motor with anti-flinging seal as claimed in claim 2, wherein The bottom inner wall of the connecting ring (120) is provided with an annular groove (121), and the annular groove (121) is internally provided with a shielding net (122).

4. The energy efficient oil-cooled motor with anti-flinging seal as claimed in claim 3 wherein, A shielding ring (123) is fixedly installed on the top of the shielding net (122), and the top of the shielding ring (123) is in contact with the bottom surface of the impact ring (112).

5. The energy efficient oil-cooled motor with anti-flinging seal as claimed in claim 4, wherein, A connector (101) is fixedly connected to the end of the cable (100).

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