Anti-condensation slip ring

Abstract

The invention is suitable for the technical field of slip rings, and provides an anti-condensation slip ring, which comprises a rotor and a stator, and is characterized in that the stator comprises an outer sleeve, an electric brush module, a front end cover, a rear end cover and a ventilation valve; the front end cover and the rear end cover are fixed at the two ends of the outer sleeve through screws respectively, the rotor and the electric brush module are arranged in a space formed by the outer sleeve, the front end cover and the rear end cover, and the electric brush module is used for being in signal connection with the rotor; the rear end cover is provided with a through ventilation channel, the rotor is arranged on the outer sleeve, and a space formed by the front end cover and the rear end cover is communicated with the outside through the ventilation channel. The problems that in the prior art, heat dissipation channels are additionally arranged on a main shaft and an end cover, the heat dissipation area of the end cover and an outer sleeve is increased to relieve high temperature in the slip ring, machining parts are complex, machining cost is increased, a high-protection slip ring cannot be achieved, and environment limitation exists are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of slip rings, and in particular relates to an anti-condensation slip ring. Background Art

[0002] With the continuous progress of human society, the increase in product diversity and functionality has led to more and more applications of slip rings in different environments and fields. Slip rings suitable for normal temperature environments can no longer meet the use requirements, and more and more slip rings are required to be used in harsh environments. Slip rings are widely used in high-end industrial electrical equipment or precision electronic equipment, such as aerospace equipment, medical equipment, etc. These devices have diverse working environments, including extreme temperature, humidity, and wave impact conditions. Therefore, the design of slip rings needs to fully consider environmental adaptability.

[0003] Traditional slip ring design cannot take into account both heat dissipation and high protection. In high temperature environment and high speed (speed ≥ 2000rpm), the inside of the slip ring is a relatively closed space. The heat generated inside cannot diffuse to the external environment, so a large amount of heat will accumulate inside the slip ring. The internal temperature rise affects the conductive properties of the conductive slip ring, accelerates wear, reduces the life, and even makes the conductive function of the slip ring ineffective. Unprotected slip rings diffuse the internal heat of the slip ring by adding heat dissipation channels to the spindle and end cover and increasing the heat dissipation area of ​​the shell (including end cover and jacket). This will increase the processing cost of the end cover and jacket; it cannot be achieved for slip rings with high protection requirements, and the application environment is limited.

[0004] For unprotected slip rings, the internal heat of the slip ring is diffused by adding heat dissipation channels on the main shaft and end cover and increasing the heat dissipation area of ​​the end cover and jacket, but it cannot be dustproof or waterproof. Traditional slip rings can only reduce the condensation phenomenon inside the slip ring by improving the protection level of the slip ring, but it still cannot avoid the risk of conductive failure of the slip ring caused by water droplets due to condensation. At the same time, the installation of sealing rings is not convenient for disassembly and assembly and increases the cost of the slip ring. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-condensation slip ring, aiming to solve the problem that the existing slip ring cannot avoid the risk of conductive failure of the slip ring caused by water droplets generated by condensation, and the installation of a sealing ring is inconvenient for disassembly and assembly and increases the cost of the slip ring.

[0006] The present invention is implemented as follows: an anti-condensation slip ring includes a rotor and a stator, the stator includes a jacket, a brush module, a front cover, a rear cover and a breathable valve; the front cover and the rear cover are respectively fixed to the two ends of the jacket by screws, the rotor and the brush module are both arranged in the space formed by the jacket, the front cover and the rear cover, and the brush module is used to make signal connection with the rotor; a through breathable passage is arranged on the rear cover, and the rotor is arranged in the space formed by the jacket, the front cover and the rear cover and is connected to the outside world through the breathable passage; the breathable valve is threadedly connected to the breathable passage, the inner wall of the breathable passage is provided with an internal thread, the side wall of the breathable valve is provided with an external thread, and the internal thread and the external thread are meshed with each other.

[0007] According to a further technical solution, the front end cover and the outer jacket, as well as the rear end cover and the outer jacket, are sealed and connected via sealing rings, and the sealing rings are made of wear-resistant and heat-insulating materials.

[0008] According to a further technical solution, the brush module includes a brush wire and a brush holder, the brush holder is fixed to the opposite side of the front cover and the rear cover by screws, and the brush wire is fixed to the brush holder.

[0009] According to a further technical solution, the rotor includes a main shaft, a conductive ring, a baffle, an insulating sheet, a flange and a bearing; bearings are fixed at both ends of the main shaft, the side walls of the two bearings are respectively fixed on the front cover and the rear cover, and the flange is fixed on one end of the main shaft; a plurality of conductive rings and insulating sheets are sleeved on the main shaft, the plurality of conductive rings and the plurality of insulating sheets are staggered and interspersed, and a baffle for fixing the plurality of conductive rings and the plurality of insulating sheets is fixed on the main shaft.

[0010] According to a further technical solution, sealing rings are respectively fixed to both ends of the main shaft, and the two sealing rings are respectively connected to the front end cover and the rear end cover.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The present invention provides an anti-condensation slip ring, which has a wide range of application scenarios, including but not limited to wind power generation control systems, intelligent monitoring control systems, power distribution control systems, etc. These systems have high requirements for the environment and need to provide a safe, environmentally friendly, and energy-saving high-quality environment. In view of the shortcomings of existing slip rings, the present invention has made a new design: using the working principle and characteristics of the breathable valve (also known as the breathing valve), the breathable valve is installed on the rear end cover by threading, which is convenient for disassembly and assembly and saves costs. Since the breathable valve has a polymer membrane that allows ventilation but prevents dust and water from passing through, the ventilation between the slip ring and the outside world is guaranteed, and the temperature is kept consistent with the outside world to prevent condensation caused by the temperature difference between the inside and the outside. At the same time, it also has high protection (the protection level reaches IP65 and above), which can adapt to high and low temperature, dust, dripping water and other environments. It solves the problem of adding sealing rings to the traditional slip rings to improve the protection of the slip rings, avoiding more condensate to accumulate inside the slip rings, causing slip ring failure and inconvenience in disassembly and replacement, and increasing the cost of the slip rings. It solves the problem of adding heat dissipation channels to the spindle and end cover and increasing the heat dissipation area of ​​the end cover and jacket to alleviate the high temperature inside the slip ring, resulting in complex processing parts, increased processing costs, and the inability to achieve high-protection slip rings, and environmental limitations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of an anti-condensation slip ring provided by the present invention.

[0014] In the attached figure: main shaft -1, conductive ring -2, baffle -3, insulating sheet -4, flange -5, bearing -6, sealing ring -7, outer sleeve -8, brush wire -9, brush holder -10, front end cover -11, rear end cover -12, sealing ring -13, air valve -14, air channel -15. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0017] like Figure 1As shown, an anti-condensation slip ring provided by an embodiment of the present invention includes a rotor and a stator, and the stator includes a jacket 8, a brush module, a front cover 11, a rear cover 12 and a breathable valve 14; the front cover 11 and the rear cover 12 are respectively fixed to the two ends of the jacket 8 by screws, and the rotor and the brush module are both arranged in the space formed by the jacket 8, the front cover 11 and the rear cover 12, and the brush module is used to make a signal connection with the rotor; a through breathable passage 15 is arranged on the rear cover 12, and the rotor is arranged in the space formed by the jacket 8, the front cover 11 and the rear cover 12 and communicates with the outside through the breathable passage 15; the breathable valve 14 is threadedly connected to the breathable passage 15, and the inner wall of the breathable passage 15 is provided with an internal thread, and the side wall of the breathable valve 14 is provided with an external thread, and the internal thread and the external thread are meshed with each other; the front cover 11 and the jacket 8, as well as the rear cover 12 and the jacket 8 are sealed by a sealing ring 13, The sealing ring 13 is made of wear-resistant and heat-insulating materials; the brush module includes a brush wire 9 and a brush holder 10, the brush holder 10 is fixed on the side facing the front cover 11 and the rear cover 12 by screws, and the brush wire 9 is fixed on the brush holder 10; the rotor includes a main shaft 1, a conductive ring 2, a baffle 3, an insulating sheet 4, a flange 5 and a bearing 6; the main shaft 1 is fixed with bearings 6 at both ends, the side walls of the two bearings 6 are respectively fixed on the front cover 11 and the rear cover 12, and the flange 5 is fixed on one end of the main shaft 1; a plurality of conductive rings 2 and insulating sheets 4 are sleeved on the main shaft 1, and the plurality of conductive rings 2 and the plurality of insulating sheets 4 are staggered and interspersed, and a baffle 3 for fixing the plurality of conductive rings 2 and the plurality of insulating sheets 4 is fixed on the main shaft 1; sealing rings 7 are respectively fixed at both ends of the main shaft 1, and the two sealing rings 7 are respectively connected to the front cover 11 and the rear cover 12, and the main shaft 1 is sealed and connected to the front cover 11 and the rear cover 12 through the two sealing rings 7.

[0018] In the embodiment of the present invention, when in use, the slip ring is usually installed at the rotation center of the equipment, and is mainly composed of two parts, the rotating part and the stationary part, namely the rotor and the stator. The rotor is connected to the rotating structure of the equipment and rotates with it, and the stator is connected to the fixed structure of the equipment. By attaching the slip ring to the 360° rotating equipment, the stator wire and the rotor wire can provide power and signals to the equipment. During the operation of the slip ring, the stator of the terminal equipment uses a stop pin to clamp the pin hole of the slip ring to stop the rotation, and the flange 5 of the main shaft 1 is connected to the moving parts of the terminal equipment with screws, so that the rotor and the stator form relative motion to work. Using the principle of elastic lap joint, the conductive ring 2 of the rotor and the brush wire 9 of the stator form a stable and reliable rotating connection system. During continuous operation, the conductive ring 2 of the rotor and the brush wire 9 of the stator generate heat due to relative motion friction. The working principle of the air valve 14 is used to transfer the heat generated by friction to the outside air to form a temperature balance. The temperature inside the slip ring is consistent with that of the outside, ensuring that the air pressure and temperature inside and outside the slip ring are balanced, so that condensation will not occur inside the slip ring. At the same time, heat will not accumulate inside the slip ring at high temperature and high speed, ensuring the normal electrical transmission function of the slip ring. The slip ring is installed with a breathable valve 14, so that the slip ring can adapt to various environments and ensure that the slip ring can be used normally in high and low temperature, dust, dripping water and other environments. By installing a breathable valve, the slip ring can not only adapt to various environments, but also save the cost of the slip ring while adapting to the environment, and ensure power supply safety and convenient disassembly and assembly, which is easy to replace.

[0019] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A slip ring for preventing condensation, comprising a rotor and a stator, Features ； The stator includes a jacket, a brush module, a front cover, a rear cover and a breathable valve; The front cover and the rear cover are fixed to the two ends of the outer casing by screws respectively, and the rotor and the brush module are arranged in the space formed by the outer casing, the front cover and the rear cover, and the brush module is used for signal connection with the rotor; The rear end cover is provided with a through ventilation channel, and the rotor is arranged in a space formed by the outer sleeve, the front end cover and the rear end cover and is connected to the outside through the ventilation channel; The vent valve is threadedly connected to the vent channel, an inner thread is arranged on the inner wall of the vent channel, an outer thread is arranged on the side wall of the vent valve, and the inner thread and the outer thread are meshed with each other.

2. The anti-condensation slip ring according to claim 1, It is characterized in that The front end cover and the outer jacket, as well as the rear end cover and the outer jacket are sealed and connected via sealing rings, and the sealing rings are made of wear-resistant and heat-insulating materials.

3. The anti-condensation slip ring according to claim 1, It is characterized in that The brush module comprises a brush wire and a brush holder. The brush holder is fixed to the opposite side of the front cover and the rear cover by screws, and the brush wire is fixed to the brush holder.

4. The anti-condensation slip ring according to claim 3, It is characterized in that The rotor comprises a main shaft, a conductive ring, a baffle, an insulating sheet, a flange and a bearing; Bearings are fixed at both ends of the main shaft, the side walls of the two bearings are respectively fixed on the front cover and the rear cover, and the flange is fixed on one end of the main shaft; The main shaft is sleeved with a plurality of conductive rings and insulating sheets, which are arranged in an interlaced manner, and a baffle for fixing the plurality of conductive rings and the plurality of insulating sheets is fixed on the main shaft.

5. The anti-condensation slip ring according to claim 4, It is characterized in that Sealing rings are fixed to both ends of the main shaft respectively, and the two sealing rings are connected to the front end cover and the rear end cover respectively.

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