2016年10月31日星期一

Frequency Converter Application by Xianrun Blower

Frequency Converter Application by Xianrun Blower

Nearly 20 years, due to urgent need of energy saving and requirements of product quality constantly improvement, people take full advantage the easy operation, free maintenance, high control precision, and functional characteristics of fan frequency converter, so the fan frequency converter gradually replace the adjusting door, baffle and valve. 
Custom Heavy Duty Industry Fans for Power Plant

Especially in cement production, iron and steel smelting process, mining ventilation, coal power plant and other industries, many frequency converter manufacturers even install the fan frequency converter to industrial fans and blowers for free, share out bonus according to energy saving degrees, to promote the fan frequency converter application vigorously.
High Capacity Double Suction Fans for Power Plant
The fan frequency converter can solve the various problems effectively in industrial production. It is the industrial automation difficulties that restrict the productivity development, the frequency converter are applied in large industrial fans and blowers industry initially, with the development, many research fellows and business customers begin to develop and accept the frequency converter,so as to popularize to the whole automation industry and drive the automation process.
High Temperature Fans for Dust Collecting

2016年10月30日星期日

Frequency Converter Application in Industrial Fans And Blowers by Xianrun Blower

Frequency Converter Application in Industrial Fans And Blowers by Xianrun Blower

Frequency converter is variable speed equipment of industrial production equipment for the three-phase ac motor, such as various fan equipment of product processing and manufacturing industry, ID fan, FD fan for boiler combustion system, cooling fans on the drying system, ventilation fan or exhaust fan for ventilation system, etc.
High Temperature Industrial ID Fans for Boilers

The most energy saving and power consumption are main fans in coal power plant.
Fan frequency converter controls and adjust fans according to furnace pressure, wind speed, air volume, temperature, and etc., to meet the technological requirements and operation condition.

In the past without frequency converter, the industrial fans control the airflow by controlling the adjusting door and baffle, and centrifugal fan motors has been running at maximum power condition regardless of the production size demand. 

In this case, not only production precision is restricted, but also causing a lot of energy waste and equipment loss, and leading to the production cost increases, shortening equipment service life, high maintenance cost to motor and mechanical transmission, and other electrical equipment.
Wear Resistant ID Fan

Most industrial fans and blowers use asynchronous motor and direct drive operation, so will cause large starting current, mechanical shock, electric protection features and so on. All these will affect the equipment service life, and it can not snap action protect equipment when there is mechanical failure, even pump damage and motor burning out. 

For the high power motor, no matter directly start or star triangle start, will have varying degrees impact on power grid, so State Grid Corporation of China regulation is that the large current devices are not allowed direct start.
High Temperature Fans for Dust Collecting

2016年10月28日星期五

Advantage of Centrifugal Fan with Variable Frequency Motor by Xianrun Blower

Advantages of Centrifugal Fan with Variable Frequency Motor by Xianrun Blower:

1. Automatic control.Reduce the labour intensity, reduce the system maintenance time, improve production, reduce operating costs.

2. Control the centrifugal fan motor starting current.Conventional centrifugal fan will produce 7-8 times current of motor at the start,then generate heat, and reduce the service life; while variable frequency motor can reduce the maintenance cost, and increase service life.

3. Reduce the electric power line voltage fluctuation.Conventional motor startup will cause current surge, and voltage fluctuations, all that leads to voltage sensitive equipment failure or abnormal work; variable frequency motor because can start step by step from zero frequency zero voltage,and avoid failure.
High Temperature Industrial ID Fans for Boilers
4. Adjust centrifugal fan air volume smoothly; and make industrial fans and blowers work in the best working point; blower performance curve conforms to the system; improve the centrifugal fan efficiency; avoiding surge; stabilize the furnace pressure; meet the requirements of the work environment.

5. Low speed operation can reduce centrifugal fan blade wear, reduce noise, prolong the life of the industrial blowers and motors.

6. Good energy saving effect. Due to the air flow is in direct proportion ratio to the square of rotational speed, and power consumption is in direct proportion ratio to the cube of rotational speed, the centrifugal fan with variable frequency motor is more energy efficient. 
Coupling Driving ID Fan for Cement Plant

2016年10月27日星期四

Hydraulic Coupling Disadvantage for Industrial Fans And Blowers by Xianrun Blower

Hydraulic Coupling Disadvantage for Industrial Fans And Blowers by Xianrun Blower

(1) Hydraulic coupling always has slip ratio and power loss.The rated efficiency of torque-limiting hydraulic coupling is approximately equal to 0.96, the variable speed hydraulic coupler efficiency relative centrifugal fans is between 0.85 ~ 0.97;
(2) The output speed is always lower than the input speed, and the output rotational speed cannot be as accurate as gear transmission speed;
New Design FD Fans for Boilers
(3) The speed control type hydraulic coupler need additional cooling system, so increase the investment and operation cost;
(4) Large covering area, so it needs a certain space between motor and industrial fans and blowers;
(5) Narrow range of speed regulation;
(6) The ability of transmitted power is directly proportional to the square of the input speed. If the input speed is too low, the coupler specification will increase, and decrease cost performance.
High Capacity Single Suction Fans for Cement Plant

The Hydraulic Coupling Transformation for Power Plant Fans And Blowers by Xianrun Blower

The original base of ID fan does not change, just need to transform motor position properly, and fill motor foundation on the motor end. In this case, the transformation construction is small, and just invest in the hydraulic coupling and filling foundation part. 
High Temperature Fans for Dust Collecting

2016年10月26日星期三

Hydraulic Coupling Application in Power Plant Fans And Blowers by Xianrun Blower Part 1 Advantages

Hydraulic Coupling Application in Power Plant Fans And Blowers by Xianrun Blower

Part 1 Advantages 

(1) Low equipment cost, high utilization ratio of the original facilities in transformation, low investment, easy to recycle, long service life;

(2) It can realize stepless speed in a large scope; and variable speed regulation performance is stable; small fluctuation and power plant fans and blowers reliable operation;
New Design FD Fans for Boilers
(3) The hydraulic coupling install between motor and blowers, to realize flexible connection and driving. The coupling has isolation effect to the shaft system vibration, to realize the motor no-load startup, and prevent the motor overload;

(4) Simple operation, convenient maintenance, to improve power plant ID fan, FD fan working conditions;

(5) When the centrifugal fan speed decreases, the abrasion of flying ash to the industrial fans blade is reduced, so to protect the blower blade effectively and avoid blade fan efficiency decreasing.
Coupling Driving FD Fan with High CFM

2016年10月25日星期二

Power Plant Industrial Fans And Blowers by Xianrun Blower

Power Plant Industrial Fans And Blowers by Xianrun Blower

Fans and blowers are driven fluid machinery, widely applied in tunnels, underground garage, senior civil buildings, metallurgy industry, mines, power plants and other places, for air or smoke ventilation and high temperature smoke exhausting.
High Temperature Fans for Dust Collecting

The main parameters of fans and blowers are output air flow, total pressure, the required power and efficiency, and there is a corresponding relationship between these parameters.In power plant, many fans and blowers are needed to cooperate main engine operation, so that to make the whole unit normal operation and generate electric energy. 

ID fan, FD fan are an important auxiliary equipment in power plant, and they also play an important role in safety and economic production of coal-fired power plants. The industrial fans and blowers to the power plant thermodynamic system, what heart to human body, continuously work in the circulatory system, keeping working in circle system. 
Custom Heavy Duty Industry Fans for Power Plant
At the same time, the large capacity thermal power generating unit has rapid development in our country, the reliability of the fans and blowers in large power plant have direct relationship with the safe operation of the generating set and economic benefit of power plant.

2016年10月24日星期一

Fan Frequency Inverter Definition And Features by Xianrun Blower

Fan Frequency Inverter Definition

Fan frequency inverter is a special inverter in motor customized for all kinds of industrial fans and blowers. Adopting frequency conversion speed controlling motor to change the centrifugal fan speed, thus changes the fan air volume to meet the production requirements, and the most energy-saving operation consumption as well as the highest comprehensive benefits.
So frequency control of motor speed is the best scheme to realize centrifugal fan stepless speed regulation, and it also can easily form closed-loop control system to realize the constant pressure or constant flow.
High Temperature Fan for Cement Rotary Kilns

Fan Frequency Inverter Features 

1. Designing for industrial fans and blowers energy-saving control;
2. Built-in PID and advanced  energy-saving software;
3. Energy-efficient, in general, power saving effect is between 20%~60%;
4. Automation control, easy management and  security protection;
5. Prolong industrial fans and blowers service life;
6. Protect grid stability, reduce wear and failure rate;
7. Realize the soft start and brake function. 
Coupling Driving ID Fan for Cement Plant



2016年10月23日星期日

Frequency Conversion Technology in Centrifugal Fan Control System by Xianrun Blower

Frequency Conversion Technology in Centrifugal Fan Control System by Xianrun Blower

Frequency conversion technology is a kind of power electronic technology, widely applied in industrial fans and blowers control system in power plant, steel plant, cement plant and so on. Frequency converter is produced from the frequency conversion technology, it can be used in most motor. Because it can provide accurate speed control, so it can easily control the machinery rise, fall and variable speed operation.
High Temperature Industrial ID Fans for Boilers
Frequency converter is often applied for complex system, poor working conditions, high load, long running condition. And frequency converter in centrifugal fan adopts communication method, so it make configuration and system maintenance through the computer. 
New Design FD Fans for Boilers
In general, short frequency converter is composed of three winding input transformer, rectifier circuit, synthetic busbar, inverter circuit, synthetic filter circuit, control cabinet, etc. At present, the variable frequency motor has been applied in the boiler ID fan(induced draft fan) , FD fan(forced draft fan) for power saving modification.
New Design FD Fans for Boilers

2016年10月19日星期三

ID Fans for Coal-fired Boilers by Xianrun Blower

ID Fans for Coal-fired Boilers by Xianrun Blower

ID fan (Induced draft fan) is an important equipment in coal-fired boilers and flue-gas system, adjusting induced airflow by controlling inlet guide vane of induced draft fan, to maintain the boiler furnace negative pressure stability and ensure the boiler safe operation. 
High Temperature Industrial ID Fans for Boilers
When the boiler loads change, the boilers induced airflow and forced airflow will also change, then the ID fan adjusts the changes by controlling the inlet guide vane angle. In general, changing the inlet guide vane to adjust airflow is more energy-saving than changing ID fan damper.  

But the throttling loss is still large for the both, especially in low load condition. Secondly, the action of adjusting inlet guide vane is slow, slow response speed with the desulfurization booster fan system in the variable load adjustment process, so it easy to cause the system oscillation, load hysteresis, etc.
New Design FD Fans for Boilers
In addition, at the start, the starting current of asynchronous motor can reach to 4 ~ 7 times of rated current, influencing power grid stability. And at the same time, the powerful impact torque has adverse effects on the industrial fans and motor service life.

2016年10月18日星期二

Xianrun Blower HVLS Ceiling Fan Security Protected Measures

Xianrun Blower HVLS Ceiling Fan Security Protected Measures

Both you and your customers, the most concern is safety. The more thorough security protection system, we trust the industrial HVLS ceiling fan more. Our alloy chassis are cut by CNC wire-cutting machines, high strength and never break. The below are our security protection system, this make sure the safety operation. Generally speaking, our protected measures are quite advanced.
The below are for your reference.

1
Wire Rope Protected Measures
Steel wire rope protection, pass through the connecting rod, stride the "" steel frame, wind with "" steel frame. If derrick fracture by accident, Steel wire rope will hold the whole machine, put an end to the fuselage drops.
2
Wire Traction

Four steel wires will host to connect to the ceiling, guaranteeing the fan running more firmly and prevent fan shaking. In order to avoid fan falling accidently, stress intensity of every steel wires can reach up to 1000 kg.
3(6)
Chassis Safety Ring
There are two safety ring are equipped between motor and chassis. Once the motor and the chassis separate accidently, small safety ring will be stuck in the large ring chassis to avoid chassis fall off.
4
High-Strength Bolt
All fasteners adopt high load and strength bolts. The bolt and screw grade is 8.8, 30 Crmnsi material.
5
The Fan Blade Protected Sparring
The HVLS ceiling fan blade protective sparring is equipped between the blades and the blades, connects all the blades together to become a whole. The blade protective measures can balance fan running, also prevents single blade falling off.
7
Frequency converter built-in protection system
Built-in protection system, and frequency conversion system can alarm and stop running automatically for the accident case.

2016年10月17日星期一

Xianrun Blower HVLS Ceiling Fan Configuration

Xianrun Blower HVLS Ceiling Fan Configuration

HVLS (High Volume, Low Speed), large air volume, low speed rotation (below 100 r/min), large size, frequency conversion fan.
Xianrun Blower Commercial HVLS Ceiling Fans

1. HVLS Ceiling Fan Configuration 

The below are our fan configuration, including the processing technology and material. Please have a check. I hope it is clear for you as our fan is in your front.

Fan Blade
The fan blade material is Aviation Aluminum. The blades are processed by Fluorocarbon painting, do not need cleaning and never deformation.
Body Shell
Our industrial ceiling fan shell adopts laser cutting, with the features of heat resistance, high temperature resistance, resistant to chemical corrosion and electrochemical corrosion, durable and very beautiful appearance.
Alloy chassis
Applying new cutting technology to build high strength magnesium alloy aluminum chassis, completely solves the root fracture problems posed by the low pressure casting. The service life is 10 times more than low pressure casting fan. This can assure HVLS ceiling fan balance accurately, and to ensure product safety.
The Blade Protected Sparring
High pure steel as raw materials made with 6 mm laser cutting, the surface is smooth, hard and firm, no oxidation, no corrosion. 
Junction steel plate

All steel connection use 8 mm high strength steel plate. Bending design, welding area is wide and solid strength is higher.
Electric Cabinet
Electric control panel is equipped with indicator lights, display screen, three control switch, speed control knob. Case cover uses high integral hot melt glue sealing, cascade from the lock, so the lock strength is stronger. Internal overall rational layout is clean and tidy, built-in current protection switch. 

2016年10月16日星期日

Wastewater Treatment Plants Fans And Blowers Application by Xianrun Blower

Wastewater Treatment Plants Fans And Blowers Application by Xianrun Blower

As we all know, environment protection is more and more important at present, as for the waste water treatment, centrifugal fan and roots blower play an important role in sewage treatment plant.

In sewage treatment plant, the centrifugal fan and roots blower are mainly used for sewage treatment structure ventilation, the pre aeration during wastewater treatment, aerobic biochemical treatment blast aeration, mixing stirring, etc.
Xianrun Blower Roots Blower for Water Treatment
In urban and industrial wastewater treatment plants, centrifugal fan can be divided into single stage high speed blower and multistage low-speed blower. 

And centrifugal fan raise the air pressure and speed by high speed rotating impeller, then in the fixed elements, part of air speed are further converted to pressure energy. 

Roots blower make rotary motion in the air cylinder, then the air volume shrinks and air pressure increases by piston effect. 
Positive Displacement Roots Blower

2016年10月14日星期五

The Difference Between Roots Blower and Centrifugal Fan By Xianrun Blower

The Difference Between Roots Blower and Centrifugal Fan By Xianrun Blower


6. Roots blower is suitable for constant flow condition. Because the roots blower belong to the constant flow fan, and the main parameter is air volume, output air pressure changes with pipeline and the load, so air volume change have little change. 
Roots blower is a kind of high pressure blower as well as positive displacement blower, air volume and revolutions are in proportion, and the air flow from the suction side to the discharge side.
 
Xianrun Blower Roots Blower for Water Treatment

7.Centrifugal fan is suitable for constant pressure condition. Centrifugal fan belongs to constant pressure fan, the main parameter is air pressure, the output air volume changes with pipe and load, while air pressure changes little.
The centrifugal fan air pressure is not as high as roots blower. Air compression process is worked by several impeller under centrifugal force.
Xianrun Blower Centrifugal Fan and Roots Blower Difference

8. Centrifugal fan is square torque, with roots blower basically belongs to the constant torque.
9. Roots blower have much bigger noise than centrifugal fan during the working.
High Temperature Fans for Dust Collecting


2016年10月13日星期四

The Difference Between Roots Blower and Centrifugal Fan by Xianrun Blower

The Difference Between Roots Blower and Centrifugal Fan by Xianrun Blower

1. Different working principle, centrifugal blower impeller is forward curved impeller or backward curved impeller. The air is exhausted from casing by centrifugal force. 
While roots blower impeller is two rotor, and the interval is very small. The air is exhausted from casing by the two impeller extrusion. 

Xianrun Blower Roots Blower for Water Treatment

2. Different working pressure, roots blower outlet air pressure is much higher than centrifugal fan. 

3. Different airflow. In general, roots blower is suitable for higher pressure and smaller airflow situation, while centrifugal fan is suitable for larger airflow and lower air pressure situation. 

4. Different manufacturing accuracy, roots blower is more precision, and has more strict matching requirements. 
Custom heavy Duty Industry Fan from China Supplier

5. Different efficiency, centrifugal fan power saving is more 30% than roots blower.