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GY4-73 F Y4-2 × 73 F boiler centrifugal induced draft fan
Purpose and Structure
Product details
GY4-73 FCentrifugal induced draft fan for boiler
Purpose and Structure
GY4-73№20F~31.5FBoiler centrifugal induced draft fan is specifically designed for10ten thousand~20Drum induced draft fan designed for the matching of 10000 thermal power generation units. It is inG、Y4-73№20D~31.5DBased on the existing problems in use, a new product has been redesigned.
Transform the originalDChange the transmission mode toFThe type transmission method improves the stability of the fan during operation, making it particularly important to address the impact of impeller wear and dust accumulation on rotor balance, which can easily cause vibration in the fan.
Through model testing, the air inlet chamber of this model of fan has been added, and the shape of the original air inlet has been changed to an eccentric air inlet. Due to the fact that the air inlet chamber was not attached to the fan produced in the past, and the air inlet chamber configured by the power plant was not suitable for the operation of the fan, it is easy to cause air intake vortex, causing severe vibration of the fan casing, air inlet chamber, and air duct. The working condition of the fan has seriously deteriorated, and the air volume and pressure power fluctuate greatly, causing the equipment to malfunction. This improvement has successfully solved this problem.
The inlet of the intake chamber is equipped with a self-aligning radial regulating valve to improve the adjustment efficiency of the fan. The support of the regulating blades is equipped with self-aligning bearings, which are flexible in rotation and reliable in use, ensuring that the motor of the execution structure is not overloaded.
Due to the high working environment temperature, the bearing box of this model of fan adopts water-cooled type
This model of fan has increased the rigidity of the casing and intake chamber, with rib plates welded on the outside of the casing and intake chamber, and evenly distributed in a cross shape; Internally welded with hollow tube support to eliminate vibration caused by insufficient rigidity.
Considering the issue of dust particle wear on the impeller, the solid part of the wing shaped blade head has been increased, and an anti-wear plate has been added at the rear disc of the blade. At the same time, a wear-resistant layer has been welded on the easily worn area to extend the service life of the impeller.
The bearing box has improved the oil gauge design and added a vent plug to solve the oil leakage problem. The new type of fan has adjusted the bearing model due to the change in rolling bearing standards. At the same time, due to the change in transmission mode, the bearing force situation is more reasonable, and the problems that occur during use are greatly reduced.
According to the user's usage, the air inlet and outlet can be designed at different angles, such as the outlet45°/Import135°,Splitting the casing and intake chamber facilitates the internal maintenance of the fan and the lifting of the rotor.
type
G、Y4-73 FThe centrifugal drum induced draft fan of the boiler is a single suction and single support type, with a total of6Individual machine number,12Specifications.
Each specification can be made into two rotation directions: left and right,Facing the fan from one end of the motor, if the blades rotate clockwise
Right whirlwind machine, to“the right side”express. The counterclockwise rotation is called a left cyclone“the left side”express.
The inlet and outlet positions of the fan are represented by the air inlet of the intake box and the air outlet of the casing, such as the outlet45°/Import135°
Transmission mode of fanFUsing an elastic coupling to connect the motor for transmission
The inlet of the intake chamber is equipped with a regulating valve to improve the adjustment efficiency of the fan. The support of the regulating blades is equipped with rolling bearings, which rotate flexibly and are reliable to use
Y4-2×73 FCentrifugal induced draft fan for boiler
purpose
Y4-2×73 FCentrifugal induced draft fans for boilers are mainly used in large boiler induced draft and dust removal equipment for steel plant smelting. Due to the development of production and the increase in boiler capacity, the volume of steelmaking furnaces has also increased, and the amount of flue gas in the smelting process is also increasing. In order to reduce air pollution, flue gas must be purified. Therefore, large boiler dust removal fans are designed, which are high flow, medium high pressure head, low noise, and universal for cold and hot media, but the maximum temperature of the medium should not exceed250℃
This series of fans is based on the aerodynamic sketch of the fan model test, and adopts advanced technologies such as inclined cone adjustable air inlet, long-life backward impeller, leak proof bearing box, and self-aligning radial adjustment door.
Reasonable layout, wide range of universities, easy to select efficient operating points
The inclined cone adjustable air inlet eliminates strong eddy currents in front of the inlet, ensuring intake stability and improving the overall efficiency of the fan
The backward impeller adopts backward wing shaped blades, which reduce airflow impact, have good stability, and the motor is not easily overloaded. The wing shaped hollow head wear-resistant blades enhance the strength of the impeller and extend its service life.
The overlap type oil slinger throws the oil carried by the high-speed rotating bearing onto the inner wall of the bearing box and flows back to the oil pool. The semi-circular aluminum oil seal not only facilitates maintenance and prevents friction accidents, but also increases resistance along the axial direction, cutting off some of the thin oil back to the oil pool. The outer pressure plate also blocks a small amount of thin oil. The bearing box is equipped with a vent plug, reducing the slight positive pressure inside the bearing box. Can the oil level be truly realized, ensuring no oil leakage and good dust prevention performance.
The inlet of the intake chamber is equipped with a self-aligning radial regulating valve, and the support of the regulating blades is equipped with self-aligning bearings, which are flexible in rotation and reliable in use. During operation and adjustment, there is a "dead" power supply, ensuring that the motor of the executing structure is not overloaded.
type
Y4-2×73 FThe centrifugal induced draft fan of the boiler is of double suction and double support type8Individual machine number.
Each specification can be made into two rotation directions: left and right,Facing the fan from one end of the motor, if the blades rotate clockwise
Right whirlwind machine, to“the right side”express. The counterclockwise rotation is called a left cyclone“the left side”express.
The inlet and outlet positions of the fan are represented by the air inlet of the intake box and the air outlet of the casing, such as the outlet45°/Import135°
Transmission mode of fanFUsing an elastic coupling to connect the motor for transmission
Purpose and Structure
GY4-73№20F~31.5FBoiler centrifugal induced draft fan is specifically designed for10ten thousand~20Drum induced draft fan designed for the matching of 10000 thermal power generation units. It is inG、Y4-73№20D~31.5DBased on the existing problems in use, a new product has been redesigned.
Transform the originalDChange the transmission mode toFThe type transmission method improves the stability of the fan during operation, making it particularly important to address the impact of impeller wear and dust accumulation on rotor balance, which can easily cause vibration in the fan.
Through model testing, the air inlet chamber of this model of fan has been added, and the shape of the original air inlet has been changed to an eccentric air inlet. Due to the fact that the air inlet chamber was not attached to the fan produced in the past, and the air inlet chamber configured by the power plant was not suitable for the operation of the fan, it is easy to cause air intake vortex, causing severe vibration of the fan casing, air inlet chamber, and air duct. The working condition of the fan has seriously deteriorated, and the air volume and pressure power fluctuate greatly, causing the equipment to malfunction. This improvement has successfully solved this problem.
The inlet of the intake chamber is equipped with a self-aligning radial regulating valve to improve the adjustment efficiency of the fan. The support of the regulating blades is equipped with self-aligning bearings, which are flexible in rotation and reliable in use, ensuring that the motor of the execution structure is not overloaded.
Due to the high working environment temperature, the bearing box of this model of fan adopts water-cooled type
This model of fan has increased the rigidity of the casing and intake chamber, with rib plates welded on the outside of the casing and intake chamber, and evenly distributed in a cross shape; Internally welded with hollow tube support to eliminate vibration caused by insufficient rigidity.
Considering the issue of dust particle wear on the impeller, the solid part of the wing shaped blade head has been increased, and an anti-wear plate has been added at the rear disc of the blade. At the same time, a wear-resistant layer has been welded on the easily worn area to extend the service life of the impeller.
The bearing box has improved the oil gauge design and added a vent plug to solve the oil leakage problem. The new type of fan has adjusted the bearing model due to the change in rolling bearing standards. At the same time, due to the change in transmission mode, the bearing force situation is more reasonable, and the problems that occur during use are greatly reduced.
According to the user's usage, the air inlet and outlet can be designed at different angles, such as the outlet45°/Import135°,Splitting the casing and intake chamber facilitates the internal maintenance of the fan and the lifting of the rotor.
type
G、Y4-73 FThe centrifugal drum induced draft fan of the boiler is a single suction and single support type, with a total of6Individual machine number,12Specifications.
Each specification can be made into two rotation directions: left and right,Facing the fan from one end of the motor, if the blades rotate clockwise
Right whirlwind machine, to“the right side”express. The counterclockwise rotation is called a left cyclone“the left side”express.
The inlet and outlet positions of the fan are represented by the air inlet of the intake box and the air outlet of the casing, such as the outlet45°/Import135°
Transmission mode of fanFUsing an elastic coupling to connect the motor for transmission
The inlet of the intake chamber is equipped with a regulating valve to improve the adjustment efficiency of the fan. The support of the regulating blades is equipped with rolling bearings, which rotate flexibly and are reliable to use
Y4-2×73 FCentrifugal induced draft fan for boiler
purpose
Y4-2×73 FCentrifugal induced draft fans for boilers are mainly used in large boiler induced draft and dust removal equipment for steel plant smelting. Due to the development of production and the increase in boiler capacity, the volume of steelmaking furnaces has also increased, and the amount of flue gas in the smelting process is also increasing. In order to reduce air pollution, flue gas must be purified. Therefore, large boiler dust removal fans are designed, which are high flow, medium high pressure head, low noise, and universal for cold and hot media, but the maximum temperature of the medium should not exceed250℃
This series of fans is based on the aerodynamic sketch of the fan model test, and adopts advanced technologies such as inclined cone adjustable air inlet, long-life backward impeller, leak proof bearing box, and self-aligning radial adjustment door.
Reasonable layout, wide range of universities, easy to select efficient operating points
The inclined cone adjustable air inlet eliminates strong eddy currents in front of the inlet, ensuring intake stability and improving the overall efficiency of the fan
The backward impeller adopts backward wing shaped blades, which reduce airflow impact, have good stability, and the motor is not easily overloaded. The wing shaped hollow head wear-resistant blades enhance the strength of the impeller and extend its service life.
The overlap type oil slinger throws the oil carried by the high-speed rotating bearing onto the inner wall of the bearing box and flows back to the oil pool. The semi-circular aluminum oil seal not only facilitates maintenance and prevents friction accidents, but also increases resistance along the axial direction, cutting off some of the thin oil back to the oil pool. The outer pressure plate also blocks a small amount of thin oil. The bearing box is equipped with a vent plug, reducing the slight positive pressure inside the bearing box. Can the oil level be truly realized, ensuring no oil leakage and good dust prevention performance.
The inlet of the intake chamber is equipped with a self-aligning radial regulating valve, and the support of the regulating blades is equipped with self-aligning bearings, which are flexible in rotation and reliable in use. During operation and adjustment, there is a "dead" power supply, ensuring that the motor of the executing structure is not overloaded.
type
Y4-2×73 FThe centrifugal induced draft fan of the boiler is of double suction and double support type8Individual machine number.
Each specification can be made into two rotation directions: left and right,Facing the fan from one end of the motor, if the blades rotate clockwise
Right whirlwind machine, to“the right side”express. The counterclockwise rotation is called a left cyclone“the left side”express.
The inlet and outlet positions of the fan are represented by the air inlet of the intake box and the air outlet of the casing, such as the outlet45°/Import135°
Transmission mode of fanFUsing an elastic coupling to connect the motor for transmission
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