Axial flow pump device guide vane body hydraulic optimization method based on tests

A technology of hydraulic optimization and guide vanes, which is applied to components, pumps, and pump control of pumping devices for elastic fluids, and can solve problems such as mismatching hydraulic performance and increasing head loss in outlet channels

Active Publication Date: 2015-03-25
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the conventional design method of the guide vane body leads to a mismatch with the hydraulic performance of the outlet channel, which increases the head loss of the outlet channel

Method used

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  • Axial flow pump device guide vane body hydraulic optimization method based on tests
  • Axial flow pump device guide vane body hydraulic optimization method based on tests
  • Axial flow pump device guide vane body hydraulic optimization method based on tests

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Experimental program
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Embodiment

[0062] A large-scale vertical axial-flow pump device using a siphon outlet flow channel, the test-based hydraulic optimization method for the guide vane body of the device includes the following steps:

[0063] (1) Design and build a model test device in which the average velocity circulation of the guide vane outlet of the axial flow pump device affects the hydraulic performance of the outlet channel, such as figure 1 As shown, it is composed of model pump 1, guide vane body 2, average velocity circulation meter 3, water outlet channel 5, water outlet pool 6, gate valve 8, auxiliary pump 9, and flow meter 10 connected in sequence through pipelines, and the inlet of water outlet channel 5 The wall of the pipeline 11 is provided with a pressure measuring hole 4 at the inlet of the outlet channel, and a pressure measuring tube connected with the inlet of the outlet channel is installed on the pressure measuring hole 4 of the inlet of the outlet channel. The outlet pressure measu...

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PUM

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Abstract

The invention discloses an axial flow pump device guide vane body hydraulic optimization method based on tests and belongs to the technical field of hydraulic machinery. The axial flow pump device guide vane body hydraulic optimization method based on the tests overcomes the defects that a pump device can not be matched with the hydraulic performance of a water outlet passage by the adoption of an existing axial flow pump guide vane body design method. According to the method, a model test device representing the influence of the average velocity circulation at a guide vane body outlet of an axial flow pump device on the hydraulic performance of the water outlet passage is designed and established, the guide vane body outlet circulation and the head loss of the water outlet passage in a group of tests containing seven schemes are tested and calculated respectively, and hydraulic optimization of a guide vane body of the axial flow pump device is achieved on the basis of clarifying the law of how the guide vane body outlet circulation of the axial flow pump device influences the head loss of the water outlet passage, so that the axial flow pump device is matched with the water outlet passage optimally, and the hydraulic performance of the axial flow pump device is further improved. The method is applicable to hydraulic optimization of guide vane bodies in axial flow pump devices composed of different types of axial flow pumps and different types of water outlet passages.

Description

technical field [0001] The invention relates to a hydraulic optimization design of a guide vane body of an axial flow pump device, in particular to a test-based hydraulic optimization method for a guide vane body of an axial flow pump device, and belongs to the technical field of hydraulic machinery. Background technique [0002] Large-scale axial flow pump devices are widely used in plain areas of our country, and have played a very important role in the fields of drought resistance and flood drainage, water resource allocation and water environment improvement. The axial flow pump device is composed of the water inlet channel, the water outlet channel, the impeller and the guide vane body of the axial flow pump, wherein the water inlet channel is located in front of the impeller, the guide vane body is located behind the impeller, and the water outlet channel is located behind the guide vane body. The water flow obtains energy under the action of the high-speed rotating ax...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D15/00F04D29/54
CPCF04D15/0088F04D29/548
Inventor 陆林广徐磊陆伟刚王海李亚楠
Owner YANGZHOU UNIV
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