CN2125032U

CN2125032U - Tubular turbine pump

Info

Publication number: CN2125032U
Application number: CN 92212759
Authority: CN
Inventors: 唐炎武
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-30
Filing date: 1992-04-30
Publication date: 1992-12-16

Abstract

The utility model discloses a novel cross flow type water wheel pump. A rotating shaft [2] in a casing [1] is supported by an upper and a lower supporting seats. A rotating wheel of a cross flow type water wheel machine is arranged on the lower part of the rotating shaft. Two or three water pump impellers are arranged on the upper part. Water passages are arranged between every two water pump impellers. A flow guide blade is arranged in the water passage. One or two water pump impellers are additionally arranged on the rotating shaft of the original single-impeller cross flow type water wheel pump to form a water wheel pump with a two-stage or a three-stage impeller structure. The work efficiency of the water pump can be increased. The cavitation erosion of the rotating shaft of the water wheel machine can be reduced. Embodiments indicate that technology effect is obvious.

Description

Tubular turbine pump

The utility model relates to the improvement of through-flow type hydro-turbo pump.

The working procedure of turbine pump is to drive pump working by water turbine work.Existing through-flow type hydro-turbo pump structure is seen Fig. 1.Rotating shaft ［ 2 ］ in the casing ［ 1 ］ is supported by upper and lower supporting base, and tubular runner ［ 3 ］ (blade shape is like fan-shaped) is equipped with in rotating shaft ［ 2 ］ bottom, constitutes water turbine with its casing; Water pump vane ［ 4 ］ is equipped with on rotating shaft ［ 2 ］ top, constitutes water pump with its casing.Water with kinetic energy is entered by water turbine inlet ［ 5 ］, impulse water turbine blade, runner and axle rotation, thereby drive the water pump vane rotation and make pump working, enter the water of water pump by pump entrance, because the high speed rotating of water pump vane, make water generates pressure and spray by exit of pump ［ 6 ］.The turbine pump of this kind structure owing in its rotating shaft impeller ［ 4 ］ only is housed, often claims the single-stage water pump, thereby has the following disadvantages, as when requiring 1 meter head to produce 8 meters lifts, its specific speed of pump is low, and promptly pump efficiency is low; And the unit inflow-rate of water turbine requirement of water turbine is big, and the unit inflow-rate of water turbine is big, and pitting coefficient is then big, the easy cavitation of runner.

The utility model provides a kind of efficient high novel through-flow type hydro-turbo pump.

Technological scheme is referring to Fig. 2.The utility model is set up water pump vane ［ 7 ］ in rotating shaft ［ 2 ］, two impellers are coaxial fixing, promptly constitute the twin-stage water pump, are provided with water channel ［ 8 ］ between two impellers.During turbine pump work, water is through the pressurization of prime water pump, and the supercharging of level water pump through the exit of pump ejection, can improve pump working efficient, and the unit inflow-rate of water turbine of water turbine is littler than the single-stage pump, then can reduce pitting coefficient then after water channel enters.

Embodiment 1.Fig. 2 is this routine structural drawing, be D80-8 type bilobed wheel through-flow type hydro-turbo pump, establish impeller ［ 7 ］ and impeller ［ 10 ］ on the axle, two impeller outer diameters of water pump are 752 millimeters (general 1090 millimeters of diameters of single impeller), establish guide vane ［ 9 ］ in the water channel between two impellers ［ 8 ］, to reduce resistance to water-flow.Lift is 8 meters when 1 meter head, has improved the working efficiency of water pump, and the unit inflow-rate of water turbine of water turbine is littler than former single impeller turbine pump.

The axle rotating speed of this example is 236 rev/mins, 125 liters/second of water-outlet quantitys, and efficient is about 73%, and 234 rev/mins of the rotating speeds of single impeller, 119 liters/second of water-outlet quantitys, efficient is 51%; 1372 liters/second of this routine water turbine inflow-rate of water turbines, pitting coefficient is 1.15, and the water turbine inflow-rate of water turbine of former single impeller is 1865 liters/second, pitting coefficient is greater than 1.5.

Embodiment 2.This example is established three water pump vanes referring to Fig. 2 in rotating shaft, establish water channel between per two impellers, establishes guide vane in every water channel.

The utility model is set up the turbine pump that one or two impeller constitutes two-stage or three grades of blade wheel structures on the axle of original single impeller through-flow type hydro-turbo pump, can improve pump working efficient, reduces the cavitation of rotary wheel of water turbine.Embodiment shows that technique effect is obvious.

Claims

1, a kind of novel through-flow type hydro-turbo pump, rotating shaft [2] in the casing [1] is supported by upper and lower supporting base, rotary wheel of water turbine [3] is equipped with in described rotating shaft [2] bottom, water pump vane [4] is equipped with on top, it is characterized in that water pump vane [7] is arranged in the rotating shaft [2], water channel [8] is arranged between described two water pump vanes, and back level water pump communicates with water out.

2,, it is characterized in that guide vane ［ 9 ］ is arranged in the water channel ［ 8 ］ according to the described turbine pump of claim 1.

3, according to the described turbine pump of claim 1, it is characterized in that three water pump vanes are arranged in the rotating shaft ［ 2 ］, between per two water pump vanes water channel is arranged, in every water channel guide vane is arranged.