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Centrifugal pump used for three-dimensional particle image velocimetry (PIV) measurement

A centrifugal pump, three-dimensional technology, applied in the field of centrifugal pumps, can solve the problems of difficult calibration and large errors, and achieve the effects of high calibration accuracy, easy assembly and simple operation

Active Publication Date: 2011-01-12
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of difficult calibration and large errors in the three-dimensional PIV measurement of centrifugal pumps, and propose a centrifugal pump for three-dimensional PIV measurement, which can put the calibration target disc into the pump body for three-dimensional calibration, simple design, and universal Strong, high calibration accuracy

Method used

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  • Centrifugal pump used for three-dimensional particle image velocimetry (PIV) measurement
  • Centrifugal pump used for three-dimensional particle image velocimetry (PIV) measurement
  • Centrifugal pump used for three-dimensional particle image velocimetry (PIV) measurement

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] As a centrifugal pump suitable for three-dimensional PIV measurement, the present invention is mainly implemented in two stages of three-dimensional calibration and PIV test.

[0025] (1) Three-dimensional calibration stage.

[0026] Consists of volute 1, impeller 2, end cover A3, slotted flat end set screw A4, calibration guide rod 5, hexagon socket flat end set screw 6, positioning slider 7, calibration target plate 8, slotted flat end set screw B9 And hexagon socket head cap screw 10 forms.

[0027] First, fix the calibration target plate 8 on the positioning slider 7 through the slotted flat-end set screw B9; secondly, fix the positioning slider 7 on the calibration guide rod 5 through the slotted flat-end set screw A4; then, through the end The T-shaped slot on the cover A3 installs the calibration guide rod 5 on the end cover A; then, fix the a...

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Abstract

The invention discloses a centrifugal pump used for three-dimensional particle image velocimetry (PIV) measurement. The centrifugal pump is mainly used for internal flow PIV calibration and measurement. The centrifugal pump comprises a volute, an impeller, an end cover, a grooved flat end fastening screw, a guide rod, an internal hexagonal flat end fastening screw, a slide block, a calibration target disk and an internal hexagonal cylindrical head screw and is characterized in that: the square volute is not formed by integral casting with organic glass for putting a self-manufactured target disk into the centrifugal pump conveniently for three-dimensional calibration so as to improve the calibration precision of the centrifugal pump. The position of the target disk can be adjusted outsidethe pump, so that the calibration of different sections inside the impeller is facilitated. The centrifugal pump is simple in structure, easy to operate, high in university and suitable for three-dimensional (3D) PIV measurement occasions of all single-stage single-suction centrifugal pumps.

Description

technical field [0001] The invention belongs to the technical field of centrifugal pumps, and in particular relates to a centrifugal pump used for three-dimensional PIV measurement, which is mainly used for measuring the velocity field of flow inside the centrifugal pump to improve the calibration accuracy. Background technique [0002] PIV (Particle Image Velocimetry) testing technology has been widely used in the study of pump internal flow in recent years due to its advantages of rapid measurement of the entire flow field, intuitiveness, and no interference with the flow field. In the process of three-dimensional PIV test, calibration is very important, and its accuracy directly affects the PIV measurement results. At present, the impeller and volute of PIV pumps are mostly made of plexiglass. After being assembled to the test bench, a closed system is formed. Calibration is difficult, and it is impossible to put the calibration target disk inside the pump body for calibr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D1/00G01P5/20
Inventor 刘厚林王凯袁寿其谈明高王勇
Owner JIANGSU UNIV
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