Adjustable experiment device for researching time sequence effect of guide vane of multistage centrifugal pump

An experimental device, centrifugal pump technology, applied in the components of the pumping device for elastic fluid, pump, pump control, etc. Efficiency and the effect of improving overall performance

Pending Publication Date: 2019-05-10
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, under the condition of non-uniform flow, the timing effect of the rear gui

Method used

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  • Adjustable experiment device for researching time sequence effect of guide vane of multistage centrifugal pump
  • Adjustable experiment device for researching time sequence effect of guide vane of multistage centrifugal pump
  • Adjustable experiment device for researching time sequence effect of guide vane of multistage centrifugal pump

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specific Embodiment

[0037] Such as Figure 8 As shown, when the rotating shaft 16 rotates clockwise along the ratchet 4, the ratchet 5 and the ratchet 4 are clamped by the supporting force given by the link mechanism to the ratchet 4, and the ratchet 5 drives the link mechanism to rotate with the ratchet 4 at the same time. The rear guide vane 2 is connected with the ratchet device through the rear guide vane connecting rod 21 , which ensures that the rotation of the rear guide vane 2 is driven by rotating the rotating shaft 16 . Such as Figure 5 As shown, the ratchet 5 of the ratchet device is connected with the connecting rod AB6, the connecting rod AB6, the connecting rod CD7, the connecting rod DE8 and the rear guide vane connecting rod 21 form a planar four-bar linkage, and the dead point in the four-bar linkage is position, often occurs where the follower is in line with the connecting rod. When the connecting rod CD7 and the connecting rod DE8 are in the collinear position, that is, the...

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Abstract

The invention discloses an adjustable experiment device for researching a time sequence effect of a guide vane of a multistage centrifugal pump. The device comprises a postpositional water outlet endvolute, a postpositional guide vane, an impeller, an indicating device and a ratchet wheel device, wherein the postpositional water outlet end volute, the postpositional guide vane, the ratchet wheeland the indicating device are matched with one another, on the basis that the multistage centrifugal pump is not disassembled, the ratchet wheel device is additionally arranged on a rotating shaft andis connected with the back of the postpositional guide vane, the rotating shaft is rotated to realize the rotation of the postpositional guide vane, the placement angle of the postpositional guide vane and a prepositional guide vane is changed, so that the effect of different time sequences of the prepositional guide vane and the postpositional guide vane is achieved, the indicating device is additionally arranged on the outer side of the postpositional guide vane at the same time to display the change angle of the postpositional guide vane. According to the adjustable experiment device, thelift and the efficiency of the multistage centrifugal pump are improved, the pump has good cavitation resistance and the anti-vibratility, the comprehensive performance of the multistage centrifugal pump is improved, and the disassembly and assembly of the multistage centrifugal pump are avoided.

Description

technical field [0001] The invention belongs to the field of multistage centrifugal pumps, in particular to an adjustable experimental device for studying the timing effect of guide vanes of multistage centrifugal pumps. Background technique [0002] Multistage centrifugal pumps are widely used in important fields of national economy such as fire protection, metallurgy, chemical industry and electric power. For a long time, the hydraulic design of multistage centrifugal pumps has adopted the design method of single pump, and the reflection of flow between stages has not been considered. In recent years, more and more studies and engineering practices have shown that the flow interference between stages of multistage centrifugal pumps has a very significant impact on pump performance. Therefore, how to apply interstage flow interference to improve the performance of multistage centrifugal pumps has become a research hotspot in the field of machinery. Among them, optimizing p...

Claims

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Application Information

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IPC IPC(8): F04D1/06F04D15/00F04D29/66F04D29/44F04D29/46F04D29/00
Inventor 崔宝玲李文庆张陈良孙富有李一凡
Owner ZHEJIANG SCI-TECH UNIV
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