Petrochemical system with explosion-proof motor

 Cast Iron electrical motor auto spare parts 
Specifications
1. 20 years manufacturing experience 
2. competitive price,high quality
3. Delivery Detail:within 10 days after receiving deposit 
 (1) increased safety and no spark machine demand will rise. Petrochemical system users in the use of practice; Has realized the development of our country the necessity of increasing safety and no spark motor. In electric motor 12v 500w addition, a large number of the 1970 s [bow into the device the increased safety of form a complete set, no spark machine has to adopt a suitable alternative goods. (2) the reliability of the explosion-proof electric motor have been petrochemical system user attention increasingly. Petrochemical enterprise development has become increasingly large scale and continuous operation, the system to realize the long period operation and maintenance free or less maintenance. Therefore, explosion-proof motor becomes the key equipment to ensure the above requirements. (3) explosion-proof and efficient single phase motor frequency conversion motor has become a petrochemical user pressing for the development of energy-saving products. 


gost motor 7.5kw

Specifications
1. effiency: IE2 and IE1 
2. 20 years manufacturing experience 
3. 12 months guarantee 

4. low noise and vibtration
In recent years has produced YBx and YAX explosion-proof series high efficiency motor, after the market is very popular with users. Explosion-proof motor energy conservation work has two aspects: one is to develop efficient explosion-proof electrical products, 2 it is to develop various kinds of special explosion-proof motor speed control products, especially the fan and pump will have great potential for energy saving and compressor motor is designed for speed regulating motor. (4) the coastal petrochemical enterprise's development will bring the new requirements. China's coastal area will be built a batch of oil refinery, all needs motor electric to import crude oil, and high sulphur content in crude oil imports, serious corrosion, and therefore requires explosion-proof motor improve anti- corrosion performance; in addition to import crude oil must be by sea, the high head big flow pump storage tanks requires matching of explosion-proof motor. (5) the western big development of petroleum industry in our country, development is suitable for hot desert environment of explosion- proof motor products. Hydrogenation unit supporting type with large capacity increased safety brushless excitation synchronous motor market needs to be increased year by year.

Voltage current transformer model meaning

Capacitive voltage transformer (CVT), in 1970 developed the domestic first 330 KVCVT, 1980 and 1985, developed the first generation and second generation KVCVT 500, electric motor 12v 500w 1990 and 1995, developed the third and fourth generation KVCVT 500, more than 30 years has accumulated rich experience in scientific research, development, design and production, in the domestic developed generation after generation of CVT new products, giving impetus to the development of www.dongfeng-motor.com the domestic CVT. CVT's main features are: High - electric strength, insulation margin is large, reliable operation. - can reliable damping ferroresonance. Successful adoption of the new group phase, with strict quality control, ensure that the factory's every fan motor piece of CVT are under any ac motor of the voltage from low to high effective damping various ferromagnetic resonance frequency. - good contact response characteristics. When the second time remaining after a short circuit voltage can fall below 5% in 20 ms, especially adapted to the fast relay protection. With power grid harmonic monitoring of patent technology.

Classification of ac motor

1,according to the working power supply classification:depending on the motor working power supply,can be divided into direct current motor and ac motor.Which ac motor is also divided into single-phase motor and three-phase motor. single phase generator 2,according to the structure and working principle of classification:motor according to the structure and working principle can be divided into small electric motors asynchronous motor and synchronous motor.Synchronous motor can also be divided into permanent magnet synchronous motor,synchronous motor and magnetic resistance motor with hysteresis.Asynchronous motor can be divided into ac induction motor and motor commutator.Induction motor is divided into three phase asynchronous motor,single-phase asynchronous motor and cover pole asynchronous motor.Communication is divided into single-phase series motor commutator motor,ac/dc motors and repulsion motor. 3,according to the classification of start-up and operation mode:the motor according to the start-up and operation mode can be divided www.dongfeng-motor.com into capacitor start motor,capacitor contributed to motor,capacitor start motor running and split-phase motors. 

4,according to the rotor structure classification:according to the structure of the rotor can be divided into the cage induction motor (old standard called squirrel-cage asynchronous motor) and wound rotor induction motor (wound asynchronous motor is called old standard). 5,according to the speed of classification:can be divided into the high speed motor,motor at low speed,constant speed motor and speed regulating motor.Has general is series of brush type ac motor,commonly used in small electric tools,such as some electric hair dryer,hand electric drill,the vacuum cleaner...Work with electric spark,noise is very big,but small size,large torque.Startup capacitor is used to produce to split phase of electrical motor single-phase ac power supply,using capacitor capacitive reactance of alternating current (ac),and after a coil in series,the overall current phase shift than simple inductor current phase shift,which USES two different phase current,the magnetic field to produce a different time,such as three-phase alternating current (ac),form a rotating magnetic field.

The investment cost recovery fast economic potential

High efficiency and energy saving motor is very 6.5hp gasoline generator setsuitable for textile,fan,water pump,compressor,by recoverable motor acquisition cost electricity saving about two years.For example: a rated power is 7.5 kw,the energy efficiency of grade 3 of Y2-132-m-4 change into the same rated power,the energy efficiency level to level 2 YX3-132-m-4 efficient motor,its performance indicators such as table 1.According acmotor2.blogspot.com to the formula can be unit of electricity saving amount: 7.5 (1/0.87-1/0.901) 1=0.2966 kw? H,can calculate its investment cost recovery.Choose efficient motor,power saving effect is obvious,all update motor can be recouped in 1 ~ 2 years of investment.The service life of the equipment as the transformer and motor for decades,with high efficiency motor instead of high energy consumption,not only can improve the efficiency of energy conversion,and in terms of life power saving effect is significant,long-term development for the factory to provide big driving force.

Close down backward production facilities application of highly efficient motor Backward in order to encourage inefficient motor exit the market,guide the existing motor enterprise gradually shift production efficient,state and local governments have taken some measures,and single phase asynchronous motor introduced the corresponding policies,encourage the development

of high efficiency and energy saving motor.Such as the ministry of finance,national development and

reform commission jointly issued "about huimin projects to promote efficient motor energy saving products" detailed rules for the implementation of the notice,the level of energy efficiency for primary and secondary low-voltage three-phase asynchronous motor 15 to 40 yuan/kw subsidies; 12 yuan/kw subsidies for high-voltage three-phase asynchronous motor; Rare earth permanent magnet motor for 40 low rpm generator alternator to 60 yuan/kw subsidies.

Subsequently,the government,the economic and information commission of guangdong province

issued "about the energy-efficiency subsidy issued by guangdong province motor detailed rules for the

implementation of the notice,the detailed rules,points out that the modified motor conform to the

2012 edition of the new standard of energy efficiency and guarantee the value of the high voltage three-phase asynchronous motor efficiency,the northwest area of guangdong province subsidy standards for motor 140 RMB/kw power before modification,and the pearl river delta region (including shenzhen) province subsidy standards for motor 100 RMB/kw power before modification,and to encourage local

according to the motor power before modification standard swallow the $200 per kilowatt.But the

standard computing project subsidies amount shall not exceed 50% of its total investment,and obtain

the motor system energy saving renovation subsidies enterprises,will not affect the application and other energy-saving enjoy national and provincial capital projects.However,have not reached,the government will impose punitive tariffs.Therefore,industrial enterprises should actively respond to national policy,the implementation of the application of highly efficient motor,backward inefficient motor,on the one hand,to reach the company's own saving energy and reducing consumption,reduce cost and performance of the corporate social responsibility; On the other hand,make full use of the government's subsidy policy,reduce the financial burden on enterprises.

What are the regulations on motor operation and matters needing attention?

(1) motor under the condition of rated cooling,according to the rated data stipulated in the factory

brand of the running,do not allow the limitation of ambiguous motor run blindly.(2) the motor coil

and iron core of maximum monitoring temperature should be according to the provisions of the

factory,such as the factory did not make clear a regulation should be according to the provisions of

the table below,the motor runs in any circumstance should not exceed the temperature rise.Insulation

class A grade B E F,resistance thermometer resistance thermometer resistance thermometer measurement method,static son 220v electric motor winding temperature rise of the temperature rise of 506060757080,8595100110105115,static iron core temperature,607580,95100115,the above-

mentioned numerical temperature when the environment temperature of 35 ℃ (3) allows the temperature of the motor bearings,should abide by the provisions of the factory.No manufacturing rules,according to the following provisions: A,for the sliding bearing,shall not exceed 80 ℃.B,for rolling bearing,shall not exceed 100 ℃ (poor quality of oils and fats,do not exceed 85 ℃) (4) motor can be changed at rated voltage general-5% to + 10% within the scope of operation,its rating unchanged.(5) the motor run in rating,and voltage unbalance rate shall not be greater than 5%,the difference of three phase current shall not be greater than 10%.(6) the motor is running,in each bearing measured vibration shall not exceed the provisions of the table below: motor speed vibration value (double amplitude) mm,3000 rpm0.05,1500 rpm0.085,1000 rpm0.10,750 RPM and below 0.12. 

Motor in the process of running in addition to the strict rules,should also pay attention to the following questions: (1) the current of the motor under normal circumstances should not exceed allowable values,the difference between the three phase current shall not be greater than 10%.(2) sound and smell: motor start capacitor during normal operation of the sound should be IE2/IE3 electric motor uniform normal,no noise;No coke smell or smoke near the motor,if found to have different sounds,measures should be taken to processing coke smell or smoke.(3) the performance of the bearing,mainly is the lubrication situation,lubricating oil is normal,the temperature is high,whether there is sundry.(4) other situations,such as cooling www.dongfeng-motor.com water system is normal,wound rotor motor brush on the slip ring is normal operation.