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Wide-amplitude high-efficiency blade guide wheel suitable for 387 series submersible electric pump

A submersible electric pump and impeller technology, which is applied to the components, pumps, and pump components of the pumping device for elastic fluids to achieve high efficiency, stable changes in pump efficiency, and improved production timeliness.

Active Publication Date: 2020-01-17
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Wide-amplitude high-efficiency blade guide wheel suitable for 387 series submersible electric pump
  • Wide-amplitude high-efficiency blade guide wheel suitable for 387 series submersible electric pump
  • Wide-amplitude high-efficiency blade guide wheel suitable for 387 series submersible electric pump

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Embodiment Construction

[0027] In order to make the present invention easier to understand, the technical solutions and technical effects of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 As shown, the present invention is applicable to the wide-width high-efficiency vane guide wheel of the 387 series submersible electric pump, including the impeller 1 and the guide casing 6 .

[0029] The impeller 1 includes an impeller hub 7, blades 3, front cover plate 4, and rear cover plate 5 arranged in an integrated structure. The blades 3 are set in six pieces, and the center point of the impeller hub 2 is used as the base point, and are evenly arranged in a ring around the The outer wall of the impeller hub 2, the front cover 4 and the rear cover 5 are respectively located at the front end and the rear end of the blade 3.

[0030] The projection sh...

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Abstract

The invention discloses a wide-amplitude high-efficiency blade guide wheel suitable for a 387 series submersible electric pump. The wide-amplitude high-efficiency blade guide wheel comprises an impeller and a guide shell; the impeller comprises an impeller hub, blades, a front cover plate and a rear cover plate which are arranged in an integrated structure, six blades are arranged, the blades areuniformly arranged on the outer wall of the impeller hub in an annular mode by taking the center point of the impeller hub as a base point; the front cover plate and the rear cover plate are positioned at the front end and the rear end of the blades respectively; and the guide shell comprises an outer shell, a guide wheel hub and guide vanes which are arranged in an integrated structure, wherein the guide wheel hub is arranged inside the shell, eight guide vanes are arranged, the guide vanes are uniformly distributed between the shell and the impeller hub in an annular mode by taking the center point of the impeller hub as a base point, and the guide wheel hub and the impeller hub are in clearance fit with each other and then are positioned above the front cover plate after being assembled. According to the wide-amplitude high-efficiency blade guide wheel, the range is wide and the efficiency is high in the efficient area, on the premise of widening the range of the efficient area, theefficiency is ensured to be high compared with a conventional blade guide wheel, the efficient area coverage under 50 Hz is 150-500 m<3> / d, and the rated point pump efficiency is 66%.

Description

technical field [0001] The invention relates to a vane guide wheel, more specifically, relates to a wide and high-efficiency vane guide wheel suitable for 387 series submersible electric pumps. Background technique [0002] In my country's offshore oilfields, 85% of mechanical recovery wells rely on electric submersible pumps for lifting, and their production contribution reaches more than 90%. Due to the narrow operating high-efficiency area recommended by conventional electric pump units (limited displacement range), and the characteristics of oilfield reservoir geology, directional wells, and stimulation measures, etc., the actual production capacity of oil wells is not accurately predicted before production, and electric pumps often fail to work. In its high-efficiency zone, the operation deviates from the high-efficiency zone for a long time, resulting in serious eccentric wear of the impeller and thrust gasket, which greatly reduces the efficiency and life of the elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/22F04D29/44
CPCF04D29/2216F04D29/44
Inventor 杨璐张光一杜丹阳李令喜黄新春甄东芳孙靖云白健华蒋召平李越
Owner CHINA NAT OFFSHORE OIL CORP
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