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Flowing observation device for internal gas-liquid phase of centrifugal pump

An observation device, gas-liquid phase technology, applied in the direction of pumps, non-variable pumps, machines/engines, etc., can solve the problems of limited internal flow observation area, complex device structure, low operability, etc., and achieve strong practical value , good light transmission and convenient operation

Inactive Publication Date: 2019-02-01
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide an observation device for gas-liquid phase flow inside a centrifugal pump, which solves the problems of limited observation area, complex structure and low operability of the existing test device for the internal flow of the centrifugal pump

Method used

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  • Flowing observation device for internal gas-liquid phase of centrifugal pump
  • Flowing observation device for internal gas-liquid phase of centrifugal pump
  • Flowing observation device for internal gas-liquid phase of centrifugal pump

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] The gas-liquid phase flow observation device inside the centrifugal pump of the present invention, such as figure 1 and figure 2 As shown, it includes the water outlet part, the water inlet part, the box body 8 and the power transmission part, and the inner center of the water outlet part, the water inlet part, the box body 8 and the power transmission part is provided with a pump shaft 11;

[0026] The water outlet part includes the outlet flange section 1, the upper end of the outlet flange section 1 is detachably connected to the test pump system by bolts, the lower end of the outlet flange section 1 is connected to the rectangular volute by bolts, and the right half of the volute 2 of the volute The upper end is connected with a fixed plate 4, and the upper surface of the fixed plate 4 has a threaded hole. The lower end of the ou...

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Abstract

The invention discloses a flowing observation device for an internal gas-liquid phase of a centrifugal pump. The flowing observation device comprises a water inlet part, a water outlet part, a box anda power transmission part; and pump shafts are arranged at the centers inside the water outlet part, the water inlet part, the box and the power transmission part. According to the visual observationdevice disclosed by the invention, the problems that an existing testing device is limited to an internal flowing observation area of the centrifugal pump, and is complex in structure and low in operability are solved. By utilizing the characteristics of the smooth surface and the good light transmission property of organic glass, a centrifugal pump experimental device is designed to middle and lateral water inlet through a certain means, so that the water inlet end and the power transmission part are on the same side, an impeller rear cover plate faces outwards, thus a complete flowing imageinside a whole impeller can be shot by a high-speed camera in the direction of the impeller rear cover plate; and the structure is simple, mounting is convenient, the application range is wide, operation is convenient and fast, the effective means is provided for an internal flow field observation experiment of the centrifugal pump, and the quite high practical value is achieved.

Description

technical field [0001] The invention belongs to the technical field of fluid mechanics experiment equipment, and relates to a gas-liquid phase flow observation device inside a centrifugal pump. Background technique [0002] Centrifugal pumps are extremely important power equipment in the fields of petroleum, chemical industry, nuclear power, agriculture, etc. During the working process, the pumped fluid widely exists in gas-liquid two-phase or multi-phase flow state. Under the condition of gas-liquid two-phase flow, the gas phase moves, develops and changes in the impeller of the centrifugal pump, which may lead to flow separation, bubble breakage, coalescence, formation, etc. influences. When the gas accumulates in the impeller to a certain extent, the performance of the centrifugal pump decreases. In severe cases, the centrifugal pump is in an airlock state, causing the pump to run idly. Studying the flow characteristics of gas-liquid two-phase flow in a centrifugal pump...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D31/00
CPCF04D31/00
Inventor 贺登辉张振铎戈振国陈森林郭鹏程白博峰
Owner XIAN UNIV OF TECH
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