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Guide vane of a centrifugal pump

A centrifugal pump and guide vane technology, applied in the direction of pumps, pump components, and components of pumping devices for elastic fluids, etc., can solve problems such as hidden safety hazards, wave peaks and troughs, etc., to reduce backflow and avoid wave peaks and troughs. , the effect of eliminating the hump effect phenomenon

Active Publication Date: 2020-09-25
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing guide vane centrifugal pumps are prone to phenomena such as backflow, flow diversion, jet-wake, dynamic and static interference, etc. The most direct impact of the above unstable flow phenomena on the guide vane centrifugal pump is reflected in the "lift-flow" curve. In the flow condition, as the flow rate decreases, there will be peaks and troughs in the head. This hump effect has a huge potential safety hazard in actual production.

Method used

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  • Guide vane of a centrifugal pump
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  • Guide vane of a centrifugal pump

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] A guide vane of a centrifugal pump, such as figure 1 As shown, the guide vane body 1 is included, and the guide vane body is fixed by the upper cover plate and the lower cover plate. The guide vane body 1 includes a leading edge segment 2 and a trailing edge segment 3 connected in sequence, and the thickness of the leading edge segment 2 is along the upper cover plate. The direction of the downward cover plate increases successively, such as figure 2 As shown, the width of the upper surface (close to the upper cover) of the leading edge section 2 is smaller than the width of the lower surface (close to the lower cover), the width of the head of the upper surface of the leading edge section 2 is smaller than the width of the tail, and the front The two sides of the upper surface of the edge section 2 are curved lines; the thickness of...

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Abstract

The invention discloses a guide vane of a centrifugal pump. The guide vane comprises a guide vane body, wherein the guide vane body comprises a front edge section and a rear edge section which are connected in sequence, width of the upper surface of the front edge section is smaller than that of the lower surface, width of the head part of the upper surface of the front edge section is smaller than that of the tail part, and two edges of the upper surface of the front edge section are curves; and at least one groove is formed in an outlet section. The width of the upper surface of the front edge section is smaller than that of the lower surface, so that fluid uniformly flows into the guide vane in the direction of the upper surface of the front edge section and is prevented from crowded flowing on the lower surface of the front edge section, a flowing structure in a guide vane flow channel is changed, and unstable flowing is stopped at a guide vane inlet.

Description

technical field [0001] The invention belongs to the technical field of centrifugal pumps and relates to guide vanes of centrifugal pumps. Background technique [0002] Pumps are called the heart of modern industry, and are widely used in industries such as agriculture, chemical industry, mining and metallurgy, electric power, national defense and military industry, and urban municipal administration. Wide flow and head range, suitable for mildly corrosive liquids, uniform flow, stable operation and low vibration make it the most widely used pump. [0003] The existing guide vane centrifugal pumps are prone to phenomena such as backflow, flow diversion, jet-wake, dynamic and static interference, etc. The most direct impact of the above unstable flow phenomena on the guide vane centrifugal pump is reflected in the "lift-flow" curve. In flow conditions, as the flow rate decreases, there will be peaks and troughs in the head. This hump effect has a huge potential safety hazard ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/44
Inventor 冯建军杨红红朱国俊贺锐卢金玲罗兴锜
Owner XIAN UNIV OF TECH
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