The fan is in a new working point that meets both the new air supply requirements and the high efficiency. Fan characteristic curve The control method for the efficient operation of the fan is obviously, from an ideal point of view, under each intake condition, there is a point corresponding to the highest operating efficiency corresponding to a certain supply air demand, that is, an exact speed and The exact blade angle that matches it. In this way, there are an infinite number of such "best" combinations corresponding to the range of possible wind demand changes and the range of possible intake conditions. That is, from the control process described in the previous section, the computer must store an infinite number of "best" point rotational speed desired values ​​(this value corresponds to the current intake condition and the desired air volume). Such a demand control system is difficult to implement. The approach we take is to turn the "point" control target into a "face" control target.

We all make the fan speed, by changing the blade angle to meet the requirements of the air volume. In this way, the change in the rotational speed of the water-cooled screw unit is converted into a step-like change, thereby greatly reducing the number of desired values ​​of the "best combination". This system is achievable. Of course, this will not guarantee absolute efficiency. These desired speed values ​​can be gradually improved by theoretical calculations and gradual correction of field operation statistics.

Unit efficiency optimization control process. Control parameter optimization process 1 (fixed air volume optimization) Under the current environmental conditions and current working conditions, after the system gives new air volume requirements, the new speed and vane angle can be obtained along the following process: the new air volume is first converted into The amount of folded air on the common characteristic line; according to the folded air volume, a series of working state point combinations (in a limited area) that satisfy the different rotational speeds and different vane angles of the folded air volume can be inserted into the corresponding compression ratios corresponding to the working state points, Determine the actual wind pressure and take the closest point according to the exhaust pressure requirement (to compare the row ratio).

Heavy Duty Cut To Length Line

Heavy Duty Cut To Length Line make thick gauge steel plates, high tensile steel sheets(stainless steel coil sheets, high carbon steel coil sheets, high quality alloy steel sheets).

  • Thick gauge steel plates range thickness from 6mm and above, maximum can be 30mm, 40mm.
  • High tensile steel sheets will require same duty cut to length line when the sheet thickness is only half of plain steel plate.
  • The heavy duty cut to length don't only deal with high strength, but also conquer material elasticity.
  • Coils weight usually up to 20T, 30T, even 40T, huge coils.
  • The leveler of heavy duty cut to length line will be 4high, with leveling rollers and backup rollers.
  • cut to length sheets will be output to stacker, the stacker design will be speciall designed.
  • Heavy duty cut to length speed can be 20m/min encoding or 40-50m/min servo tracking.
  • The cut to length line will occupy 30m, 40m,50m length, when lengths of cut sheets vary.

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Heavy Duty Cut To Length Line

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