QINGDAO YAOSEN MARINE EQUIPMENT CO.,LTD

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Product name : DFT series Industrial Axial flow fan
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  Details:
DTF Series Axial flow Fan
 
1, use
 
DTF series axial flow fan can be used in ventilation system of subway, tunnel, electric power, water conservancy dam, building engineering, etc.
 
2, form
 
(1) classification of DTF series axial fan
 
1 / DTF / H) Type exhaust Air Machine (Subway called UPE/OTE Fan)
 
2 / DTF / S) Type Fire smoke exhaust Fan (Subway called smoke exhaust Fan)
 
3 / DTFV) Type ventilation and exhaust Machine (Subway called New Fan)
 
Code description
 
DTF(H/S/V)XX P×A/B/C
 
DTF: fan model
 
H / P S / V: fan model
 
XX: machine number
 
P: motor pole number
 
X: blade angle
 
A / B / C: blade regulation
 
3. Structural characteristics
 
The fan consists of impeller, motor, housing, set (guide) flow device, fixed support, shock absorber and so on. It is divided into horizontal installation and vertical installation of two specifications, and two forms of unilateral connection and two-sided connection pipe.
 
1) Fan impeller
 
The fan blade consists of a hub and a blade, and the fan blade is divided into three types: fixed, dynamic and static. The static or dynamic adjustable blade can be adjusted in the range of -7.5 °to 7.5 °, and the dynamic fan is divided into two types: pneumatic type and electric type. The blade angle can be automatically and electrically adjusted in the running state, and this method fills up the blank in our country.
 
2) Fan matching motor
 
According to the use requirements of conventional motor, special requirements can also be equipped with IP55 / IP54) protection grade HfF4) class insulation, high temperature resistance, wet heat type motor, junction box placed in the fan shell.
 
3) impeller assembly section of fan housing
 
The inner wall is machined by metal to ensure the radial clearance of the control blade, the length and weight are designed to minimize the minimum value.
 
4) Fan guide vane, collector and guide
 
Static installation, as far as possible, to consider maximum efficiency and minimum volume.
 
5) the fan mounting support ensures the fan strength to achieve light weight and easy installation.
 
6) Fan fixed blade angle, static, dynamic adjustable blade angle
 
Fixed blade angle is defined according to the operation condition of fixed angle; static adjustable refers to changes in design condition and use conditions of the case, unscrew the bolt petiole after shutdown, manually adjust the angle; dynamic adjustable wind turbine is in running state according to the use conditions required in the allowable range adjustable blade angle.
 
7) Anti-surge device
 
It can prevent the phenomenon of fan stall surge, ensure the fan to run in stable condition for a long time, such as pipeline blockage, battlefield device blockage or emergency, to ensure the safety and reliability of fan operation.
 
8) Fan shock absorber
 
According to the dynamic load of fan weight, linear speed, fixed blade angle, static adjustable blade angle and dynamic adjustable blade angle, different shock absorbers are arranged.
 
9) Fan disassembly and repair
 
The unilateral soft pipe is removed by the fan of one side and the bolt of the bottom foot is loosened; the fan of the bilateral connection first removes the two end soft pipe and loosens the bolt of the fixed bottom foot and the space section of a certain end (or anti-surge device), the fan position can be moved arbitrarily.
 
4, performance parameter selection hint
 
1) selecting the performance parameters of the fan according to the aerodynamic calculation
 
DTF series fans are according to the ventilation system design requirements, combined with this specification to consult the performance parameter table or performance curve chart to select the required fan, if the user has no choice in the sample performance parameters, the company undertakes to provide free technical services in this area.
 
The performance parameters in this paper are all the values of standard working state, atmospheric pressure Pa=1.013 × 105Pa; atmospheric temperature t0 20 ℃ 293kg; relative humidity Φ 50; air density ρ 1.2kg / m3.If the humidity changes from tnk) to tMnkn, the density will be: ρ M = ρ M = ρ m ~ (-1) / m ~ (3). If the humidity is changed from t ~ (k) to m ~ (1) / m ~ (-1), the density will be: ρ M = ρ ~ (-1).
 
The performance parameters of this series of fans are limited to conveying the gas medium without solid particles. According to the functional requirements of different ventilation systems and the environmental conditions, the performance parameters of the fan are converted according to the relevant formula and the performance parameters under the standard state.



Please contact us and get detailed Technical parameters and Drawings.
 
We could Design and Produce the Marine fan,Industrial Fan,and Other Ventilation Equipment according to your detailed requirement !

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