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Radial guide blade of residual heat removal pump

A technology for removing waste heat from pumps and guide vanes, which is applied to the components, pumps, and pump elements of a pumping device for elastic fluids, can solve problems such as the inability to effectively overcome the hydraulic loss of guide vanes, and improve reliability and safety. , improve the force, improve the effect of the force

Active Publication Date: 2014-06-25
JIANGSU UNIV
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  • Description
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Problems solved by technology

However, it still cannot effectively overcome the hydraulic loss in the guide vane

Method used

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  • Radial guide blade of residual heat removal pump
  • Radial guide blade of residual heat removal pump
  • Radial guide blade of residual heat removal pump

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0025] Figure 4 Shown is a schematic structural diagram of the radial guide vane 2 of the waste heat discharge pump of the present invention, the radial guide vane 2 of the waste heat discharge pump includes a front cover plate 24, a rear cover plate 21, and a plurality of main blades 22 , the front cover plate 24 and the rear cover plate 21 are respectively fixed on the two ends of a plurality of main blades 22 uniformly distributed in the circumferential direction to form an annular pressurized water chamber. Between two adjacent main blades 22, a splitter vane 23 with a splitting effect is arranged, and the inlet diameter D of the splitter vane 23 is 0 =0.6~0.68 (D 3 +D 4 ), the outlet diameter of the splitter blade 23 is equal to the outlet diameter of the main bl...

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Abstract

The invention provides a radial guide blade of a residual heat removal pump. The radial guide blade comprises a front cover plate, a rear cover plate and a plurality of the main blades, wherein the front cover plate and the rear cover plate are respectively fixed at two ends of the main blades in uniform circumferential distribution so as to form an annular water pressing chamber, a splitter blade is arranged every two adjacent main blades, an inlet diameter D0 of each splitter blade meets that D0=0.6-0.68 (D3+D4), and outlet diameters of the splitter blades are equal to outlet diameters of the main blades. The radial guide blade has the advantages that outlet areas of a diffusing section is reduced, diffusing efficiency of the diffusing section is lowered, speed distribution of fluid in passageways of the radial guide blade is improved, vortex backflow areas are reduced, operation efficiency of the residual heat removal pump is improved, acting force of the fluid to the main blades is improved, and operation of the residual heat removal pump is enabled to be safer and more reliable.

Description

technical field [0001] The invention belongs to the field of machinery, in particular to a radial guide vane used for a waste heat discharge pump of a nuclear power plant. Background technique [0002] With the vigorous development of the domestic nuclear power industry, the significance of studying nuclear-grade pumps is to realize the localization of nuclear-grade pumps, break the foreign technology blockade, and reach the international advanced level. The waste heat removal pump is one of the main nuclear power equipment in the waste heat removal system (RRA). Its function is to discharge the waste heat from the core when the reactor is shut down normally, so that the reactor enters a cold shutdown state and ensures the safe operation of the nuclear power plant. During the operation of the waste heat removal pump, because it works in the harsh environment of high temperature and high pressure, and the flow rate is 120m 3 / h, 910m 3 / h or 1475m 3 / h operating condition....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/44
Inventor 王文杰袁寿其裴吉张金凤袁建平骆寅
Owner JIANGSU UNIV
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