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Full-lift electric submersible pump

A technology of submersible electric pump and submersible motor, which is applied in the direction of pumps, pump devices, non-variable pumps, etc., to achieve the effects of efficient and reliable use, easy casting, and high pump efficiency

Inactive Publication Date: 2012-07-11
JIANGSU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of existing full-lift submersible pumps, the present invention provides a new type of full-lift submersible pump, so that low-specific-rotation-number submersible pumps can operate safely under high-lift and low-flow conditions, and can operate at low Reliable use under the condition of large head and flow rate, and the impeller is easier to manufacture, and the pump efficiency is also higher

Method used

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  • Full-lift electric submersible pump
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  • Full-lift electric submersible pump

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Embodiment Construction

[0017] figure 2 It is an embodiment of the present invention, which is composed of a low specific speed centrifugal pump 4 and a submersible motor 1, and the coupling frame 3 between the motor and the water pump is not only the coupling between the motor and the water pump, but also the inlet of the water pump. When the present invention works in water, water enters frame 3 from water inlet filter screen 2, enters impeller 5 under the guidance of rib plate 6 of frame 3, water is beaten out of water pump by impeller 5 again. Its main innovation is: the rib plate 6 of the coupling frame 3 is not radially radial, but obliquely straight, and the included angle 10 between the central line of the rib plate 8 and the radial radial line of the apex 7 is greater than 10 degrees. Among them, the vertex 7 is the intersection point of the central line 8 of the rib plate and the circumference 9 of the impeller inlet. The creativity of this embodiment lies in changing the rib plate 6 of t...

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Abstract

A full-lift electric submersible pump comprises a centrifugal pump with low specific speed and a submersible motor. A connecting rack between the motor and the pump serves as not only a connector for the motor and the pump but an inlet of the pump, rib plates of the connecting rack are in oblique linear arrangement rather than in radial arrangement, cross points of center lines of the rib plates and the inlet circumference of an impeller serve as vertex points, and the included angle between each of the center lines of the rib plates and the radial line of each of the vertex points is not larger than 10 degrees. The full-lift electric submersible pump with low specific speed has no over-load characteristic, can be used efficiently and reliably on working conditions of high lift and low flow rate, and can also be used in a safe manner without overload on the working conditions of low lift and high flow rate. In addition, the impeller with low specific speed of the full-lift electric submersible pump is quite easy to cast, and the centrifugal pump is high in efficiency.

Description

Technical field [0001] The present invention is a low specific revolution submersible electric pump, especially a low specific revolution submersible electric pump with full head and no overload, which should be used not only under the condition of high head and small flow rate, but also under the condition of low head and large flow rate. Pump. Background technique [0002] At present, the known low specific speed centrifugal pumps all have the law that the pump shaft power increases with the decrease of the head. When the power of the supporting motor is not too large, the low specific speed centrifugal pump can only be safely operated under high head conditions. , if it is used under low-lift conditions, the power will be overloaded and the motor will be burned. However, many submersible submersible pumps with low specific speed will be used in mobile locations. Today, they are used under high-lift and low-flow conditions, and tomorrow they may be used under low-lift and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D13/08
Inventor 陆伟刚戴吉隆李璐璐李绪良李辉
Owner JIANGSU UNIV
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