Sodium pump for increasing liquid supply pressure of hydrostatic bearing

Abstract

The invention discloses a sodium pump for increasing liquid supply pressure of a hydrostatic bearing, and belongs to sodium pumps. The sodium pump for increasing the liquid supply pressure of the hydrostatic bearing structurally comprises a pump shaft, the hydrostatic bearing, an upper pump shell, a lower pump shell, an impeller and a flow guide part, wherein an inner cavity of the upper pump shell at the upper part of the hydrostatic bearing is a sodium pump box body, an inner cavity of the lower pump shell is a sodium pump cavity, the lower part of the pump shaft is provided with two pump shaft spiral grooves whose rotation directions are opposite to the rotation direction of the pump shaft, an annular flow guide groove is formed in a cutoff portion of the pump shaft spiral grooves, an annular pressurization groove is formed in the inner wall of the hydrostatic bearing, and the annular pressurization groove and the annular flow guide groove form an annular pressurization chamber; anda plurality of adjusting cavities which are uniformly distributed in the circumferential direction are formed in the inner wall of the hydrostatic bearing above the annular pressurization groove, pressure bearing cavities are formed in the portions, above the adjusting cavities correspondingly, of the inner wall of the hydrostatic bearing, and the pressure bearing cavities are communicated with the adjusting cavities through connecting grooves. The sodium pump for increasing the liquid supply pressure of the hydrostatic bearing is used for solving the technical problem that when the sodium pump idles, the bearing capacity of the hydrostatic bearing is insufficient, which can result in wear contact between the pump shaft and the bearing.

Description

technical field [0001] The invention relates to a sodium pump, in particular to a sodium pump for increasing the fluid supply pressure of a static pressure bearing. Background technique [0002] At present, countries all over the world are vigorously promoting low-carbon environmental protection economy and controlling the emission of greenhouse gases. Countries all over the world are vigorously promoting the development and use of new energy sources. As a low-carbon and environmentally friendly new energy source, nuclear energy has entered a stage of rapid development, and is developing from the third-generation nuclear power technology to the fourth-generation nuclear power technology. The fourth-generation nuclear power technologies mainly include very high temperature reactor (VHTR), supercritical water reactor (SCWR), molten salt reactor (MSR), gas-cooled fast reactor (GFR), sodium-cooled fast reactor (SFR), lead-cooled Fast Reactor (LFR). my country is also actively ...

AI Technical Summary

Problems solved by technology

[0006] The technical task of the present invention is to provide a sodium pump that increases the hydraulic pressure of the hydrostatic bearing in view of the above-mentioned deficiencies in the prior art. The technical problem of contact wear between the pump shaft and the bearing due to insufficient load capacity of the hydrostatic bearing

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