①impeller blades for linear radiation, than after the curved blade centrifugal pump impeller can produce a higher lift. Impeller without front and rear cover, under high pressure axial force is also small. This pump seal ring will not appear due to seal ring wear caused by the decline in performance of the pump year after year. In contrast to conventional open impellers, there is essentially no relative flow between the rotating fluid flow in the pump body and the impeller, there is no return loss at the seal ring, and there is a greater gap between the vanes and the pump body. The impact is also small. As a result, it is more efficient than conventional centrifugal pumps, which have a lower rotational speed and a lower efficiency due to leakage losses. Today's latest valid order information free to send! Morning latest buyers information free to send! Punch grab Rob here! ② magnetic pump, pump body concentric cylindrical. Contrary to the principle that a conventional centrifugal pump converts kinetic energy to hydrostatic pressure by means of a volute casing or guide vane, the energy of a part of the rotating fluid is converted by a conical diffuser on the tangential line of the pump, Partial flow pump. ③ excellent anti-cavitation performance Pump speed is the difficulty of cavitation deterioration. It can be seen from Figure 3-21 that the pump solves the problem of cavitation by providing an inducer of increasing pitch at the inlet of the first stage and second stage impellers (two stage impellers for the two stages of parallel, high- Is in series, the second stage inlet pressure is far higher than the pressure of ammonia liquid ammonia, it is not installed induction wheel). This induction wheel compared with the general inducer, in a wide range of speed and flow of good performance. The pump at 14000r / min high-speed NPSH. For 8m. Induction wheel and impeller casting as a whole. In recent years, high-pressure high-pressure ammonium pump began to cancel the induction wheel, using the inlet in series with the flow of booster pump to increase NPSHa. ④ Change the pump performance as long as the change of the diffuser nozzle diameter, gear diameter, impeller diameter, induced wheel of any one of these four or a few lll] pump performance can be greatly changed. ⑤ shaft seal pump speed Another problem is the shaft seal reliability. The feature of this pump is that regardless of how high the pump discharge pressure is, the shaft seal pressure is always close to the pump inlet pressure. The first-level shaft seal with a single-end balanced mechanical seal, the second-level mechanical seal for the series balance type. The pump impeller is cantilevered support, light impeller, fluid radial force is small, the impeller's cantilever wall is very small, so the stainless steel pump, pump shaft thinner, reducing the sealing surface pV value. In order to avoid the negative influence of high-speed revolving centrifugal force on the mechanical seal, only the moving ring is revolving. Mechanical seal flushing fluid with condensate, flushing system set pressure differential valve, automatic control of the pump open parking and running, the condensate pressure and the pressure difference between the shaft seal chamber stability. ⑥ bearing radial bearings with sliding bearings, thrust bearings tilting watts, with lubricating oil system, shaft vibration and shaft displacement monitoring system and bearing temperature monitoring system to ensure the reliability of high-speed mechanical operation.
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