The G6-51 boiler blower Kiln and Furnace Booster Fanboiler blower is suitable for the supply and exhaust air systems of 2 – 670t/h steam boilers in power plants, and also meets the high-pressure performance parameters required for fluidized bed furnaces. This series of blowers can also be used for dust removal, mine ventilation and general ventilation systems.
Le G6-51 boiler supply fan delivers air, while the exhaust fan delivers flue gas or gas containing impurities. When the impurity concentration is less than 200mg/m3, it can be used for more than 4 years. If the impurity content is high, it can also be used, but the service life will be shortened. The operating temperature of the supply and exhaust fans shall not exceed 250℃.
The blower is a mechanical device that uses the input mechanical energy to increase the gas pressure and deliver the gas. It is a driven fluid mechanical device.
Blowers are widely used in water treatment projects such as urban sewage and industrial wastewater, as well as in industries and sectors such as metallurgy, chemical engineering, aquaculture, pneumatic conveying, and mine flotation, for the purpose of transporting air or other non-toxic and non-corrosive gases. They can also be used for ventilation and draft in boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household appliances, drying and conveying of grains; air sources for wind tunnels and inflation and propulsion for air cushion ships, etc.
Based on the principle of converting kinetic energy into potential energy, they utilize the high-speed rotating impeller to accelerate the gas, then decelerate and change the flow direction, converting kinetic energy into potential energy (pressure). In single-stage centrifugal blowers, the gas enters the impeller axially, and when it passes through the impeller, it changes to a radial direction, then enters the diffuser. In the diffuser, the gas changes its flow direction to decelerate, and this deceleration effect converts kinetic energy into pressure energy. Pressure changes mainly occur in the impeller, followed by the diffusion process. In multi-stage centrifugal blowers, a return device is used to make the airflow enter the next impeller, generating higher pressure.
Form of the blower for G6-51 boiler
1) The air supply mechanism is in a single suction form. The machine numbers are 8 to 29.5#.
2) Each type of blower can be made in two forms: left rotation or right rotation. When viewed from the side of the motor, the impeller rotates clockwise, which is called a right-rotating blower and is represented by “right”; the impeller rotates counterclockwise, which is called a left-rotating blower and is represented by “left”. G6-51 boiler blower
3) The outlet position of the blower is indicated by the outlet angle of the casing.
4) The transmission method of the blower is D type (i.e., cantilever structure), and the connection between the motor and the blower uses elastic coupling, and direct transmission.
5) Examples of the full name of the product are as follows:
G6-51№18D right 90 degrees
Y6-51№18D left 0 degrees
Where: G and Y represent the boiler air supply blower and boiler exhaust blower respectively, 5 is the pressure coefficient of the efficiency point multiplied by 10 and rounded, 51 is the specific speed, 1 is the secondary design, and №18 indicates that the impeller diameter is 1800mm.
Components of the blower for G6-51 boiler
The blower is composed of a casing, an intake port, a rotor, an overall support, a transmission part, a regulating door (depending on customer requirements), and an electric motor. The blower undergoes strict testing before leaving the factory, with an amplitude that meets national standards. The overall support for fans above 18# is purchased according to customer needs. (Usually, a concrete foundation is used)
Casing: Made of steel plates, it is sturdy and reliable. It can be in an overall type or a semi-open type. The semi-open type is convenient for maintenance. Fans below 14# are mostly in an overall type, while fans above 14# are mostly in a semi-open type.
Rotor: Composed of 12 twisted blades, a curved front disk, and a flat rear disk, all welded together. It should undergo static and dynamic balance tests to ensure smooth rotation and good performance of the blower.
Transmission part: Consists of a main shaft, a bearing box, rolling bearings, and a pulley (or coupling).
Intake port: Welded from steel plates, it has a conical shape and a convergent streamlined overall structure. It is installed on the side of the blower and the cross-section along the axial direction is in a curved shape, which enables the gas to enter the rotor smoothly with less loss.
Regulating door: Installed in front of the intake port. When the rotational speed (pressure) of the blower remains unchanged, it regulates the amount of air volume. G6-51 boiler blower
Overall support: Made by welding channel steel and steel plates, it is sturdy, stable, and durable in overall structure.
Motor: Uses a large manufacturer’s full copper core motor. Generally, it is defaulted as a 3-level energy efficiency motor. Customized variable frequency motors, explosion-proof motors, and motors with energy efficiency above 2 levels can also be provided according to customer requirements.
Structural Characteristics of G6-51 Boiler Blower
1) This series of blowers adopt advanced proprietary technologies such as high-strength wear-resistant impellers, leak-proof bearing boxes, and articulated axial adjustment doors.
2) The efficient operating range is wide, and the fan numbers are arranged closely, making it easy to select the efficient operating point.
3) An adjustable inlet is adopted. During the installation of the fan, the axial and radial clearances between the inlet and the impeller can be adjusted.
4) High-strength wear-resistant impellers. The impellers use backward-facing single-blade designs, reducing air flow impact and ensuring good stability. The motor is less likely to overload, significantly extending the service life of the fan. This type of fan has a high pressure coefficient, low rotational speed, and low noise, thus being highly practical.
5) Leak-proof bearing box. The overlapping oil discharge ring is used to disperse the oil generated by the high-speed rotating bearings onto the inner wall of the bearing box and return it to the oil tank. The semi-open aluminum oil seal facilitates maintenance and prevents friction accidents. It can increase the axial resistance to intercept some of the thin oil and return it to the oil tank. The outer side gland ring blocks a small amount of thin oil. The upper part of the bearing box is equipped with an air vent plug, reducing the micro positive pressure inside the bearing box to ensure no oil leakage and providing good dustproof performance.
6) Articulated axial adjustment door. The hinge bearings at the support points of the regulating blades and the regulating rods are all equipped with joints. During operation and adjustment, there are no “dead” points, making the adjustment flexible, labor-saving, safe and reliable, and ensuring that the actuator does not overload. G6-51 boiler blower
7) This fan is either an integral or a split assembly type. For the transmission group, coupling cover, and motor below 16D, they are assembled on a complete base before leaving the factory; the casing, inlet, and regulating door are another component. For smaller-sized fans, they are assembled into two components at the factory, while for larger-sized fans, they are disassembled and assembled into multiple components for transportation and installation.
8) The fan is of a cantilever structure, with convenient layout, direct motor drive transmission, and uniform torque transmission, reducing vibration and ensuring the reliability of the fan operation.
9) The installation and maintenance of this fan are convenient. The fan has two complete base shells and transmission groups. The casing has a mid-plane or vertical plane division. The disassembly and assembly are particularly convenient. The rotor can be vertically lifted. Even if only the impeller is replaced, it can also be axially disassembled and assembled.
机号 转速 r/min 全压Pa 流量m3/h 电动机型号 功率kW
8D 1450 1704-1622 11000-15400 Y160M-4 11
1539-1154 17600-26400 Y160L-4 15
9D 1450 2157-2053 15700-21900 Y180L-4 22
1948-1461 25000-37500 Y200L-4 30
10D 1450 2663-2534 21500-30000 Y225S-4 37
2405-1803 34300-51500 Y225M-4 45
11D 1450 3222-3067 28600-39900 Y250M-4 55
2910-2182 45700-68500 Y280S-4 75
960 1412-1387 18900-22700 Y180L-6 15
1342-1205 26400-34000 Y200L1- 6 18.5
1137-955 37800-45400 Y200L2-6 22
12D 1450 3835-3463 37200-59300 Y280M-4 90
3276-2597 66700-89000 Y315S-4 110
960 1681-1435 24600-44100 Y225M-6 30
1354-1136 49000-58900 Y250M-6 37
13D 1450 4500-4284 47200-65900 Y315M1-4 132
4064-3629 75400-94300 Y315M2-4 160
3338-3048 104000-113000 Y315M1-4 185
960 1973-1878 31200-43600 Y250M-6 37
1779-1684 49900-56100 Y280S-6 45
1589-1334 62400-74800 Y280M-6 55
14D 1450 5219-3535 59000-141000 Y355-4 220/250
960 2288-2178 39100 Y280M-6 55
2064-1550 62300-93400 Y315S-6 75
15D 1450 5992-5410 72600-116000 Y355-4 250/280
5119-4058 130000-174000 Y400-4 355
960 2627-2583 48100-57700 Y315S-6 75
2500-2244 66900-86100 Y315M1-6 90
2118-1779 96100-115000 Y315M2-6 110
730 1519-1370 36600-58400 Y280S-8 37
1296-1027 65500-87400 Y280M-8 45
16D 1450 6817-4617 88100-211000 Y400-4 355/400/450/500
960 2988-2843 58300-61400 Y315M2-6 110
2699-2554 92700-105000 Y315M3-6 132
2410-2024 117000-140000 Y315M2-6 160
730 1728-1698 44300-53400 Y280M-8 45
1642-1475 61900-79800 Y315S-8 55
1392-1169 89000-106000 Y315M1-8 75
17D 960 3384-3318 69900-84200 Y315M1-6 132
3209-3047 94600-111000 Y315M2-6 160
2883-2721 126000-140000 Y355M1-6 185
2503-2285 154000-168000 Y355M2-6 200
730 1957-1665 53200-9580 Y315M1-8 75
1571-1320 106000-128000 Y315M2-8 90
18D 960 3794-3416 83000-132000 Y355M2-6 200
3232-2562 150000-199000 Y355-6 250
730 2194-1975 63100-100000 Y315M2-8 90
1867-1479 114000-151000 Y315M3-8 110
19D 960 4227-4009 97600-136000 Y355-6 250
3806-2855 155000-234000 Y400-6 315/355
730 2444-2318 74200-103000 Y315M3-8 110
2201-2080 118000-134000 Y315M2-8 132
1963-1651 148000-178000 Y355M2-8 130
20D 960 4684-3766 114000-227000 Y400-6 315/355/400
3464-3163 251000-273000 Y450-6 450
730 2708-2656 86700-105000 Y315M2-8 132
2569-2438 121000-138000 Y355M2-8 160
2305-1826 15600-208000 Y355M3-8 185
21D 960 5164-5064 132000-160000 Y400-6 400
4897-3487 184000-316000 Y450-6 450/560
730 2986-2832 100000-1400000 Y355M3-8 185
2688-2016 160000-2400000 Y400-8 220/250
580 1885-1785 79500-111000 Y315M2-10 90
1697-1273 127000-191000 Y355M2-10 110
22D 960 5668-4557 152000-302000 Y450-6 560/630
4191-3827 334000-363000 Y500-6 710
730 3277-2950 116000-183000 Y400-8 220/250
2792-2235 208000-276000 Y450-8 315
580 2069-2029 92200-111000 Y355M2-10 110
1962-1761 128000-165000 Y355M3-10 132
1661-1394 183000-219000 Y355L1-10 160
23.5D 960 6467-1367 185000-443000 Y500-6 710/800/900/1000
730 3739-2525 141000-337000 Y500-8 315/355/400/450
580 2361-1594 112000-268000 Y450-10 220
25D 730 4232-3808 169000-270000 Y450-8 400/450
3605-2858 305000-406000 Y500-8 500/560
580 2672-1804 134000-323000 Y450-10 220/250/280
26.5D 730 4755-3824 202000-402000 Y500-8 560/630/710
3516-3211 444000-481000 Y560-8 800
580 3002-2414 160000-319000 Y450-10 280/315/355
2220-2027 353000-385000 Y500-10 400
480 2056-1388 132000-319000 Y450-12 220
28D 730 5309-5206 238000-288000 Y500-8 710
5034-3585 332000-571000 Y560-8 800/900/1000
580 3351-3286 189000-229000 Y450-10 355
3178-2263 264000-453000 Y500-10 400/450/500
480 2295-1956 156000-281000 Y450-12 220/250
1846-1550 312000-375000 Y500-12 280
29.5D 730 5893-5779 278000-337000 Y560-8 960
5588-3979 388000-667000 Y630-10 1120/1250/1400
580 3720-3348 221000-352000 Y500-10 500/560
3170-2512 398000-530000 Y560-10 710
480 2548-1720 183000-439000 Y500-12 315/355/400
