
Introduction of Y5-47 induced draft fan
一、用途
一、uses
Y5-47型锅炉离心引风机是为燃用各种燃质并烟除尘装置的1t/h~20t/h工业锅炉配套设计的最高全压效率达90.5%的引风机,凡进气条件相当,性能相近者均可选用,但最高温度不得超过250oC,在引风机前必须加装效率不得低于85%的除尘装置,以降低进入风机的烟气含尘量,提高风机寿命。
Draught fan Y5-47 type boiler centrifugal is for various burning fuel quality and is equipped with smoke and dust removing device of 1t/h~20t/h industrial boiler is designed to match the highest total pressure efficiency reached 90.5% of induced draft fan, where inlet conditions quite similar performance can be selection, but the highest temperature shall not exceed 250oC. At the front of the draught fan must installation efficiency may not be less than 85% of the dust removal device, to reduce into the dust content in flue gas fan, improve the service life of the blower.
二、特点
当前锅炉系列较多,燃用煤质优劣悬殊,配用除尘器阻力不一,所配引风机的风压、风量差异较大,为适应上述情况,考虑到风机的经济性,除配20吨/小时锅炉的引风机因功率较大而采用D式传动外,其余均采用C式传动,这样不仅能以同一个机号不同转速来满足同一吨位锅炉配置各类除尘器的要求,减少了风机的系列机号,而且也便于使用单位根据实际情况,自行变换主轴转速来获得所需要的教理想的风量和风压。
二、Teaching units to meet the different speed of transmission, in addition to the economic disparity between the current boiler series more burning quality, equipped with dust collector resistance, with a draught machine pressure, volume difference is bigger, in order to adapt to the situation, taking into account the fan with the 20 t / h boiler induced draft fan machine for large power and the use of D type, the rest are the C drive, so that can not only with a machine, with a tonnage of the boiler configure all kinds of precipitator, reduce the fan machine series, but also easy to use according to the actual situation, change their own spindle speed to obtain the ideal air volume and wind pressure
.型式
Type
1、该引风机制成单吸入,机号有№4、5、6、8、9、12、12.4七种。
1, the mechanism of wind into a single machine, there is no inhalation, 4,5,6,8,9,12,12.4 seven.
2、引风机可根据用户需要制成左旋和右旋两种。从电动机一端正视,如叶轮顺时针旋转则称右旋风机,以“右”表示,反之,称左旋风机,以“左”表示。
2, induced draft fan can be made of left-handed and right-handed two according to users' needs. From the motor end face, such as impeller with clockwise rotation of the said right cyclone machine to "right" said. Conversely, left a whirlwind machine, represented by the "left".
3、风机的出口位置以机壳的出风口角度来表示,“左”、“右”均可制成0o、90o、180o三种角度。
3, the outlet of the fan casing outlet position to view said, "left" and "right" can be made of 0o, 90o, 180o three.
五、四、结构和特点
六、Four, structure and characteristics
七、
八、风机主要由叶轮、机壳、进风口、传动部、调节门等部分组成:
九、The blower is mainly composed of an impeller, a casing, an air inlet, a transmission part and a regulating door:
十、
十一、叶轮——由12片材料为16Mn的后倾平板叶片,焊接与弧锥形前盘与平板形后盘中间,经静、动平衡校正和超速运转试验,因此运转平稳可靠,有较高的强度和耐磨性,使用寿命较长。
十二、Blade by 12 pieces of material for 16Mn tilt plate blade, welding and arc tapered front plate and flat plate after the middle, by static and dynamic balance emendation and overdrive testing, operation stable and reliable, high strength and wear resistance using longer life expectancy.
十三、
十四、机壳——用钢板焊接成蜗壳整体。№8以上“左”、“右”旋转通用。
十五、The casing with steel plate welded into a whole. No more than 8 of the volute "left" and "right" rotation general.
十六、
十七、进风口——敛散式进风口制成整体结构,用螺栓固定于机壳入风口一侧。
十八、The air inlet of the convergence type made whole structure, bolted to the chassis air inlet side.
十九、
二十、传动组——传动主轴以优质钢制成,采用滚动轴承。№4~6由整体和分体两种轴承箱供用户选用,整体结构用30#机油润滑,分体传动用二硫化钼润滑脂,№8以上有油位标志及温度计,有水冷装置,须加输水管,耗水量0.5~1m3/h,№6以下用风扇自冷,传动与机壳之间用两个半圆风扇叶自冷,№8~12.4用两只并列轴承座。
二十一、Transmission group, spindle drive to high-quality steel made, using the rolling bearing. No. 4 from the whole and divided into two kinds of bearing box for the user to choose, the whole structure with 30# lubrication oil, divided into body transmission use molybdenum disulfide grease, no more than 8 with oil level mark and thermometer, cooling device, shall be added to the pipeline, water consumption on 0.5 ~ 1m3 / h, no 6 fan since the cold, between the transmission and the casing with two semicircular leaf fan since the cold, no 8~12.4 with two parallel bearing seat.
二十二、
二十三、调节门——用以调节风量,轴向装于进风口前,转动灵活,调节范围,由全开到全闭,№8以上采用花瓣式,№6以下采用蝶阀式,为使调节门正常工作,须保持良好的润滑状态,采用膨胀润滑脂。
二十四、Adjust the door -- to adjust the air volume and is axially arranged in the air inlet before used, flexible rotation, adjustment range, from fully open to fully closed, no more than 8 the petal type, no 6 following the butterfly valve, in order to adjust the door to work shall maintain good lubrication, lubricating grease with a swelling.选择与应用
本风机的性能均按照№6模型无因次性能换算
The performance of the fan according to the No. 6 dimensionless performance conversion model
无因次性能换算为有因次的计算公式如下:
The dimensionless performance conversion formulas for the dimension:
全压 (Pa)
The total pressure (Pa)
流量 (m3/h)
Flow (m3/h)
式中: ——叶轮外径 (m)
Type: - impeller diameter (m)
——叶轮外圆线速度 (m/sec)
- impeller outer circle line speed (m/sec)
——气体密度 (kg/m2)
- gas density (kg/m2)
