Y4-73 centrifugal fan

Calculate specific speed centrifugal fan Y4-73 selection process is an important step, it is to determine Y4-73 centrifugal fan chosen mainly based on the specific model. The performance parameters of the conversion to the fan under standard conditions (volume flow, total pressure) and speed ratio is substituted into the formula for calculating the number of revolutions, speed can be determined depending on the different specific speed, the first order is the single suction specific speed fan basis; second-order specific speed is double suction fan basis. Here, the first part of the Y4-73 centrifugal fan selection is completed, find the specific speed is the key to the first part. Centrifugal fan models to determine its performance curve performance curve divided dimensionless dimensionless curves and curves. There dimensionless curve is to determine whether the site in accordance with the requirements are met, without dimensionless characteristic curve is a graph depicting the fan basis, there is dimensionless representing particularity, dimensionless representatives of universality. Traditional Y4-73 centrifugal fan selection most of the have-dimensional performance table (the high zone of 7 to 8 points) as the basis for selection due to cumbersome manual calculation, just take the maximum efficiency point at or near the point as a selection basis, Such algorithms are relatively simple, but the result is rough, mold burnt, narrow range, easy to overlook second high efficiency turbine model selected point of leakage. The computer selection program is generally the non-dimensional performance curve as the basis for selection, although the software is programmed to do a lot of tedious work, to take intensive point on the performance curve, calibration coordinates to calculate the specific speed of each point, accounting and other repeatedly. Y4-73 centrifugal fan dimensionless parameters are commonly available to the flow coefficient and pressure coefficient, internal efficiency, specific speed. Flow coefficient and pressure coefficient one of them can be used as the basis for calculating the fan machine number than the number of revolutions is to select the fan model is based, and in the efficiency of the model is to determine whether the basis for the efficient fan. Y4-73-14 boiler centrifugal induced draft fan blades of the fan for the board is in the original Y4-73-11 based on the type of product improvement, its high efficiency, low noise, high strength, high wear resistance, extended service life. Use of fans G4-73 and Y4-73 boiler pass, induced draft fan is mainly used in the power plant 2-670t / h steam boiler pass, induced draft fan system. In no other special requirements, G4-73 can be used for mine ventilation and general ventilation. Fan transmission medium is air, the maximum temperature should not exceed 80 ℃; medium induced draft fan for transporting gas, the maximum temperature must not exceed 250 ℃. Before the induced draft fan, dust removal device must be installed to minimize the fan into the flue gas dust content. According to the general use of the power plant, the filter efficiency with not less than 85%. Type 1 fan, fan and induced draft fan are made of a single inhalation, a total of 13 machines each №8-29.5 number. 2, from the motor end, the vane wheel rotates clockwise who said the right-handed-blower to "right", said; otherwise it is L-blower to "left". 3. The position of the fan outlet to outlet angle of said housing. 4. Fan drive way D-type, all with flexible coupling connection. Model gauge total pressure (Pa) Flow (m3 / h) with motor model (KW) single price impeller price Y4-73 9D 1651-1584 23003-32079 4-22 1511-1100 35052-44128 4-30 721-481 15229-29219 6-7.5 10D 2041-1959 31554-44004 4-37 1367-1359 48083-60533 4-45 891-594 20891-40077 6-11 515-471 15886-24207 8-5.5 439-343 26260-30475 8 -5.5 11D 2474-2463 41999-47427 4-55 2437-1646 53142-80570 4-75 1079-719 27806-53343 6-18.5 623-598 21144-29487 8-7.5 570-415 32220-40562 8-11 12D 2949 -2905 54526-68992 4-90 2829-1961 76040-104600 4-110 1285-856 36100-69253 6-30 742-731 27415-34734 8-11 712-495 38282-52661 8-15 14D 4029-3968 86586- 109550 4-1853864-2676 120740-166100 4-2201752-1726 57326-72534 6-551681-1167 79944-109970 6-75 Tel: 13806434669,13806436986 Contact: Wang QQ: 475662603 E-mail: hengdingfengji @ 126 .com Fax 0533-6069989 Website: www.fengji.so