Slip ring brushes and the oxide film

According to statistics, three relay pump operation has been burned eight switches. Collector ring temperature: brushless slip ring oxide film generally easier to form at about 70 ℃, when the collector rings, brushes overheating failure, usually at temperatures above 150 ℃, then even if the new ones brush, the oxide film is not easy to form, can not play the role of lubrication, brush wear will increase, resulting in the temperature continues to rise, become a vicious cycle. slip rings then you can take the external forcing cooling methods, such as Vaseline, high-power fan ventilation and other means, so that the collector loop temperature falls within the normal range for some time, so that the brush surface oxide film formed gradually make it into the virtuous circle. In addition, the rotor via a resistor, you can also speed. Compared with squirrel-cage motor, the motor is characterized by its complex structure, high cost, convenient operation and maintenance, maintenance workload. Collector ring pump relay switch model DW15-C630 type, wind slip ring rated current of 630A instantaneous stop 6300A, switching arc chute mutually insulated copper steel composition, arc performance is poor, relay pump the start and stop time will be in high temperature electric arc generated between the switch contacts, frequent start-term high-temperature heat generated by the arc degree of oxidation of the contacts increase, the contact resistance between the contacts increases, the main contacts of the switch firing sticky, damaged, or even cause the switch to an explosion, causing expansion of the accident.

Electronics Co., Ltd. Shenzhen Jing Pei
Manufacturing Center:
Bao'an District, Shenzhen, Guangdong Huaxing Road, Dalang Street, No. 153, Pei Jing Science Park
Sales Center:
Shenzhen, Guangdong Province, No. 7008 Shennan Road, Futian District, Ginza International (Sunshine Golf Building) Room 1902-1903
Sales Line:
0755-33359750 / 29534903/29534759
Fax 0755 -33,359,758
Email: sales@slipring.cn

Design the most suitable for your split slip ring

Sometimes because of system size or cost constraints, a fully equipped Capsule Slip Rings is not the best choice. We can meet the customer's system to provide separation of the rotor and the contact brush, precious metal contacts ensure long life, used in pneumatic or hydraulic drive. It can transmit current and signal, which is particularly suitable for precision compact unit. Operating speed, large ones, current, shape are available for you to choose. Meanwhile, we can according to your special requirements for your design the most suitable for your split slip ring. High current slip ring according to different design requirements, brushes can be brush bundle, brush or shrapnel, single maximum current up to 1000A, provides mixed signal solutions, special seismic design, ensuring stable operation under a variety of harsh environments . Typical applications include industrial machinery - machining centers, rotary table, lifting equipment towers, spinning reel, test equipment, packaging machinery and other magnetic actuators, process control equipment, rotary sensors, emergency lighting, robotics, radar, manufacturing and control equipment. "Airborne" slip ring structure is bound to a slip ring mounted on the motor shaft of the rotor, the rotor winding cable leads through the axis, so requires the use of large diameter, hollow shaft structure by the diameter of the slip ring rotor shaft restrictions must increase. Slip ring brush wear and slip ring relative movement speed is closely related with relevant information on the brushes and slip rings life of the square of the linear velocity, the airborne slip ring brush life than the conventional structure low standard specifies only 3,500 - 4,500 hours, the actual life is still far below the standard value.

JINPAT Electronics is a leading manufacturer in industrial slip rings. We commit ourselves to the development, designing and manufacturing of different types of high quality slip rings for a vast variety of applications. We provide standard products as well as customized products according to your needs. We have also collaborated with Consortium of Industry including Military Industry and Universities in China.

Large current slip ring in wind power systems is laden with the power of the whole system

High current slip ring for wind power generation system responsible for the entire system of power, control signals and data transmission capabilities, is the fan very crucial parts of the system , its precision , reliability and working life directly affects the performance of wind power generation system . Wind power generation systems for specific application requirements as well as China 's actual use of the environment , Jing Pei Electronics R & D team are specially designed and developed China 's wind power generation system dedicated slip ring . Key main material using imported materials , the internal built with advanced production equipment and a variety of slip rings for wind power performance testing system that allows crystal Pei wind slip ring with good resistance to low temperature, high humidity, wind resistance , corrosion resistance, impact resistance, anti-vibration , stable performance, no maintenance and other characteristics , the service life of up to 20 years or millions rpm.
Jing Pei Electronics is tailored to a variety of wind power equipment manufacturers specifications Wind Turbine Slip Rings, is widely used in the power generation power 600KW - 5MW wind power generation system . Options include cable length , connection, encoder type , pressure + data transmission , high-voltage current (300A) and so on .

         Slip ring brushes and slip ring split the normal operation of the motor there is a great relationship. Brush unit pressure should be " brush technical performance table " to choose. For high speed motor or work under conditions of vibration motor units should increase the pressure in order to ensure normal operation . In principle, the same motor should be used the same type of brush . Different types of brushes , such as the absence of special circumstances can not be used on the same motor , otherwise it is prone to failure. For individual commutation particularly difficult medium-sized motor, can double vessel brush , slide it into the side using lubricating properties, slide side using a strong ability to suppress sparks brush , so that the brush runs improved.


    Electronics Co., Ltd. Shenzhen Jing Pei produced slip ring can fully meet unrestricted 360-degree rotation of the power, control and digital signal hybrid transmission ; using advanced fiber optic rotary joint technology , maintenance-free , no oil ; each multi- point contact , low- contact pressure , low noise and low contact wear, long life ; standardized, modular design, product specification is complete, and can provide customized products needed .

Brush can be used in dc motor or ac motor commutator

brush slip ring can be used in dc motor or ac motor commutator, such as general electric tools, such as hand electric drill and Angle of grinding machine, use it. He is used to and cooperate to achieve motor current commutation commutator,
Brush (except squirrel-cage motor) is the motor conduction current sliding contact. In dc motor, it also shoulders the induction in the armature winding alternating emf, the reversing (rectifier) task. The practice proved: the reliability of the motor running, to a large extent depends on the performance of the brush.
According to the transmission medium to distinguish, slip ring was divided into smooth electrical slip ring, fluid slip ring, ring, can also be popular are collectively referred to as "rotating connected" or "spin". Slip rings are usually installed in the device's center of rotation, is mainly composed of rotating and stationary of two parts. Rotating part of the rotation of the connection structure and then rotating movement, known as the "rotor", still partially connected devices fixed structure of energy, called "stator".
collector rings, also commonly referred to as the convergence of carbon brush and slip ring, collecting ring, ring, spin, rotation electric joint mechanical equipment 360 ° of continuous rotation at the same time, also need multiple motion on the body of revolution. Is exercise, you need energy, such as electric energy, fluid pressure energy. Sometimes, also need to control signal source, such as optical signal and high frequency signal. Any relatively continuous rotation between 360 ° electrical components need transfer function power, weak current signal, optical signal, different energy medium such as air pressure, hydraulic pressure, oil pressure, to ensure that the electrical appliances in the rotary motion as well as free movement of the mechanical and electrical equipment, must use rotating connected device.

What is the working principle of conductive slip ring?

Slip rings using conductive parts of sliding or rolling contact, electrostatic coupling or electromagnetic coupling, the antenna mount rotating parts and stationary parts passed between electrical signal and power device. In rotating components drive components, measuring element, and control components, must from the room to offer their transmission control signal and power supply. This requires a variety of slip ring assemblies to transmit signals and energy. Some radar need to rotate the connection line up to more than one hundred. Slip ring components according to the transmission signal frequency can be divided into: the low-frequency slip ring slip ring, intermediate and high frequency rotating hinge. Slip ring usually means only the first two. Slip ring component's performance indicators are: insulation resistance and contact resistance, medium intensity and crosstalk. For intermediate frequency slip ring, because high frequency consider shielding, impedance matching, noise voltage, etc. First of all to ensure the reliable contact, in the structural design of straight through to ensure that all lines. , therefore, request the material of brush conductive performance is good, the pressure to the slip ring, appropriate to the eccentricity of the slip ring and shaking a little, good wear resistance and friction torque is small, easy to maintain.

Low slip ring

      Use of sliding contact of the low frequency signal and energy transmission slip ring assembly . There are the usual cylindrical slip ring slip ring slip ring and the differential two kinds. Cylindrical conductive ring slip ring is divided into flat ring and V -ring . Conductive ring more wear-resistant material commonly used pure copper, silver and gold coins . Brush with palladium, gold alloy or gold-plated copper wire brushes and synthetic graphite brushes . If a larger number of slip rings , a cylindrical slip ring from the upper and lower two brushes and a differential adapter plate (Figure 1 Schematic differential slip ring ) , but its axial dimension is large, the differential slip ring can significantly reduce the axial dimension , to reduce the volume and weight. Differential slip ring from the upper and lower two brushes and a differential adapter plate components. With the antenna position on the rotating brush , the brush is fixed, the differential adapter plate up and down two contact pieces , and the corresponding contact pads connected by a wire , a differential mechanism for the orientation speed to speed 1/ 2 . Antenna rotates , a current flows to each lower brush , through a differential on the turntable one or two contact pieces circuit flow from the corresponding upper brush in order to ensure between the fixed part and the rotating part of the circuit is always on . fiber optic rotary joint sliding contact wear powder may cause a short circuit between the rings . Therefore, from the structure should ensure easy cleaning , usually with modular structure, so that on-site repair or replace components.


IF slip ring

      Used to transmit the radar frequency ( tens of MHz ) signal and the energy slip ring assembly . The slip ring high frequency need to be shielded . Transmission signals below 12 MHz can use ordinary slip ring . A ring connected to the center conductor , an outer ring over cable as shielding ring ( Figure 2 IF slip ring ) . Transmission signals above 12 MHz usually shielded coaxial type slip ring . The cross section of the slip ring groove , is essentially rectangular coaxial conductors. IF there is a capacitive slip ring ( Figure 3 capacitive slip ring frequency ) , the center conductor is annular with an insulating pad supporting the shield , the rotating part and a gap between the fixed part , and do not touch , IF signal by capacitive coupling. A limited range of rotation of the antenna case can not rotary joints , but with the cable winding device .

Slip ring applications:
● Reactor
● rotating light
● dairy production equipment
● Helicopters
● Winder
● Tanks
● beer production equipment
● Intelligent Dynamic toys
● Horizontal copper production line
● rides
● Road and Bridge Machinery
● mechanical arm
● rotary stage
● crystal furnace surgical lights
● Drilling Equipment
● smart appliances
● circular knitting machine
● Filling glucose production equipment
● aviation equipment
● heat roller
● Rotate the camera
● radar communication equipment
● tube cameras
● Shield
● cable winch
● Food Machinery
● mechanical
● Heating shaft

Slip ring insulating properties

Insulation of electrical slip ring is a very important performance properties, it is a measure of the reliability of slip ring is an important indicator, refers to the metal ring and metal rings, metal ring and the spindle between the metal ring and wire between the metal ring and the shell, between the wire and the wire insulation strength. Mainly due to the insulating properties of insulation material, the internal structure design. A good slip ring design on the one hand should give full play to the advantage of material, on the other hand should be avoided material on some of the flaws.

Metal ring and the insulating material between the metal ring, high-performance engineering plastics generally select or use an insulating film with a high-performance epoxy resin based insulating adhesive. Insulation sheet will generally use is to use some larger slip ring, like through-hole slip ring and some larger Customized Slip Rings, etc., using potting process is generally smaller cap slip ring and customized smaller slip ring. The dielectric strength of insulation adhesive gel formulation is mainly affected by the impact of technology and potting, insulating rubber generally uses about 60 percent of the epoxy resin, about 20 percent kaolin, about seven percent of phthalic acid dibutyl about five percent triethanolamine, and a few percent of other ingredients. Craft glue should avoid cracks in the curing process and bubbles, when the air humidity increases, the dielectric strength may be reduced. Between the metal ring and the metal ring to control the distance of at least 1.5mm.. After our trial and a unique selection of recipes potting process enables us to reach 1,000 megohms insulation resistance above, and then pressure test through a 50 Hz 1000 V test does not breakdown, and also through the high and low temperature case insulation test.

Mercury slip ring applications and deficiencies

As the name implies , mercury slip rings, is the use of mercury as a conductive medium, the slip ring assembly . Mercury is the only state at room temperature, liquid metal , precisely because of this feature, as well as metallic conductivity. Just let this idea become a reality. Is to mercury sealed within the slip ring , the fixed end and the rotating end integrated, rotating it directly through the conductive transfer of mercury to the current , the transmitted high accuracy, good stability, no noise in the transmission signal .

  Compared to other slip ring , since the medium is a fluid , creating a compact structure , small size features, this feature, tiny precision instruments in the field of special primary role of non- mercury slip ring perfectly. Because of the characteristics of mercury , when rotating slip ring wear , longer life expectancy than the average many times , in the need for frequent rotation conductive rotary joint , which is very appropriate. Since rotating parts without complicated mechanical structure makes the product more reliable and maintenance-free, no noise , no noise , high speed , low price signal is not distorted, contact resistance, pass more current .
Mercury slip ring wide range of applications ! From traditional industries to new industries , from the civilian sector to the military industries have to use mercury slip ring . Mercury as a material we all know , is a good conductor , compared with other materials such as copper , its conductivity is not bad, because mercury is liquid mercury as the medium of an electrical rotary joint , the main principle is the use of liquid mercury at room temperature while maintaining , and mercury can be conductive, and the resistance is small , the shape can be freely changed, so , and copper and other materials than on some occasions , more applicable , it can be said slip ring can be applied traditional occasions , mercury slip ring can be competent, but because mercury is highly toxic , and more expensive, so the market price to be higher than the slip ring a large portion of the mercury slip rings are generally used in relatively high-end devices ( such as a hospital CT) is more appropriate . Superconducting experimental use of mercury in there to achieve the conductivity of weak signal transmission, numbers and control current is very appropriate, more suitable for conventional slip ring incapable of areas, such as high- speed, low impedance, low interference and other occasions. Which applications are: automated packaging packaging machinery, packaging machinery hand , robots and other automated packaging .
Mercury slip ring advantages:Therefore, in its interior is not as complex as the mechanical slip ring structure . Volume ratio on the mechanical slip ring is much smaller , and this is one of its major strengths . When the rotation is mainly mercury internal molecular friction , and the friction between the seals , so that the mercury slip ring wear is very small , so its very long life , high speed , and without maintenance.

Mercury slip ring its shortcomings :
Since the thermal expansion coefficient of mercury , the mercury slip ring is not used at high temperatures , generally working temperature should not exceed 60 ° C , followed by its high precision mechanical sealing structure , one to let expensive, on the other hand to the working environment requirements efficiency, vibration environment must be shockproof , otherwise it will seriously affect the life.

Mechanical addition of wind ability blooper ring

wind generator slip rings blooper ring belongs to a subclass, while the blooper rings are high-tech products, has continued been acclimated in cutting-edge aggressive field, a array of attention turntable, centrifuges and inertial aeronautics equipment, key components. As China's abridgement continues to develop, added and added noncombatant areas complex in the use of such articles for the automated automation systems control. In avant-garde countries, these articles accept been gradually adapted by the aggressive articles for noncombatant products, acclimation has been accomplished in contempo years, accumulation production, is broadly acclimated in security, branch automation, electricity, finance, instrumentation, aerospace, military, transportation, architecture and added automated and electrical equipment.
Wind ability blooper rings plan process, its capital ambit afflicted their job stability, believability and constancy of a abundant relationship, and sometimes there will be a big impact. Next, we mainly allocution about the blooper ring (HD blooper ring) in the advance of some of the a lot of important parameters, and gives its apprehension methods, the apprehension action for the actualization of some amateur agitated out a abundant assay of the abstracts and investigate its causes are described, and the agnate analysis measures. So what is it blooper ring? Conductive blooper ring accumulation is to accomplish two about circling amid agencies signal, the accepted casual attention manual devices.
In general, the slip rings accumulation consists of about several parts: blooper ring body, besom holder assembly, the aggregate of stents, adorable brawl bearings, address cover, etc., etc.. The apparent of the blooper ring is generally argent with adored metal layers. To abate the resistance, application adored metal admixture wire besom abstraction process, mainly by adaptable burden besom filaments sliding acquaintance with the ring groove, back the casual arresting and through currents.

Capsule Slip ring to meet different application needs

LPC Series Capsule slip ring compact design high precision, using leading military grade high standard surface treatment technology, gold contacts on the gold contacts ensure low contact resistance and long working life, especially for small and medium systems transmission weak control signal. Speed ​​up to 2000RPM, to 125 from a single road, to meet different application requirements.
Currently used internationally slip ring technology is divided into the following three: 1, composite brush block technique, commonly used carbon brush, copper brush, silver / graphite / molybdenum disulfide brush block and other forms. 2, the use of precious metal alloy filaments, such as AuNi9 so on. 3, fiber brush technology, fiber brush is a special kind of sliding electrical contact design. Simply put, fiber brush is to separate the metal filament (line) for calibration and put into a metal tube. In this cantilever design, fiber brush bundles in bulk, without shackles attached to one end of the ring road surface trough.
Advantages design high precision slip rings, surface treatment using a leading military technology, low contact resistance, long life, reliable operation, particularly suitable for small or micro-rotation system transmits weak control signal. 1, precious contacts ensure long working life 2, gold – gold contacts, the contact resistance is very low 3, compatible with the data bus protocol 4, smooth operation 5, low-torque six, compact Typical Applications 7, CCTV ball head 8, electrical test Equipment 9, manufacturing and process control device 10, the rotary table 11, the robot 12, exhibition / display device 13, medical