| I. Overview|
PYHL-14A-type high-temperature exhaust mixed flow fan is between a new kind of axial and centrifugal fans among fans, it has a high pressure centrifugal fans, axial fans big flow, high efficiency, energy saving, low noise, easy installation, and other features.
PYHL-14A series of high-temperature exhaust fan is temperature exhaust fan HTF series of derivative products, not only has HL3-2A type fan function, and can operate normally at about 300 ℃ ambient temperature for 45 minutes, both from the ventilation and It can play a dual role of high-temperature exhaust for underground tunnels, underground shopping malls, underground warehouses, and other fire-fighting facilities, by design institutes and users of all ages.
Second, the structural characteristics of the fan
Mainly by the impeller fan, chassis, import collector, deflector, electric motors and other components. Impeller several twisted wing blade welding has meridional acceleration features on the tapered hub, the balancing check, speed test It has good aerodynamic performance.
The housing is made cylindrical, and has a mute function of the current collector is coupled into a whole, the outlet is equipped with deflector, has a good flow distribution, pressure is stable.
Fan designed with secondary air to reduce the ambient temperature of the motor.
Third, use of fans
1. Applications: can be used in tunnels, underground garage, metallurgical high-temperature exhaust place, in case of fire, smoke can quickly cool down, into the disaster area to assist firefighters extinguishing, fire safety is an essential facility.
2. The types of gas transportation: air and other non-spontaneous combustion, harmless, non-corrosive gases for steel, in special circumstances, the choice of explosion-proof Francis fan.
3. impurity gases: adhesive materials are allowed within the gas contained in the dust and hard particles is not greater than 150mg / m3.
4. The gas temperature: not exceeding 80 ℃.
Fourth, the fan performance choice Fifth, the fan installation
1. The fan performance in the performance table access, performance listed in the table is the most efficient performance within the range, according to traffic divided into five performance points, according to prevail in the selection of the performance table.
2. Qualified products factory fan performance at full rated flow pressure does not exceed ± 5%.
3. Performance selection table is performance under standard conditions, regardless of the technical documentation or performance requirements according to the standard state orders prevail, the standard state of atmospheric β = 101325Pa, t = 20 ℃, relative humidity ψ = 50%. When the actual conditions of use and the lack of compliance by the relevant when the conversion formula.
4. When the wind turbine installation can be divided into vertical and horizontal, for vertical installation please specify when ordering, as in the flow, pressure, mounting dimensions and other performance parameters have special requirements, the company will provide you separate design produce.
Flow value 5. PYHL-14A (HTF-B) type high-temperature exhaust fan Francis was 280 ℃ high temperature air flow value than usual selection HL3-2A fan flow value + 5%.
1. When you install the fan response conduct a comprehensive inspection of the components, parts are complete, each member joins are tightened.
Note 2. When the fan is installed to maintain the level position of the fan, the fan and the foundation of the joint surface and the wind pipe coupling, etc., should be adjusted so that the coupling force may not have a natural fit, plus the weight of the pipe is not allowed on the blower unit.
3. Fan in operation if there is severe vibration impact, etc. anomaly must be immediately stopped and checked.
4. Fan use measures should be rain in the open air.
5. The schedule to clear the internal fan fouling, dirt and other impurities, and to prevent corrosion.