Mechanical seal test system for nuclear main pump

Abstract

The invention discloses a mechanical seal test system for a nuclear main pump, which is characterized in that the system comprises a medium concentration control zone, an injection medium processing zone, a frame zone and a reflux medium post processing zone. A test main shaft is used as a driven component in the frame zone; the test shaft is provided with a fluid static pressure seal or a fluid dynamic pressure seal or a fluid dynamic-static pressure combined seal. In the injection medium processing zone, a seal medium flow passage located between a low pressure container and a system seal cavity is respectively provided with a high pressure pump, a high pressure buffer tank and an energy accumulator, which are connected in series with a switchable magnetic filter, an organic filtering film and used,for providing a system pressure source; in the reflux medium post processing zone, a long pipe throttling cooler with a back pressure value is arranged at an outlet of the system seal cavity. The invention not only can simulate a fluid static pressure mechanical seal test for the nuclear main pump, but also can simulate a fluid dynamic pressure mechanical seal test for the nuclear main pump, at the same time, the invention further can simulate a fluid dynamic-static pressure combined mechanical seal test for the nuclear main pump.

Description

technical field [0001] The invention relates to a mechanical seal test system for a nuclear main pump, and more specifically relates to a test system for performing mechanical seal performance tests by simulating the working conditions of the nuclear power plant reactor coolant pump shaft seal. Background technique [0002] Mechanical seal is an indispensable component in fluid rotating machinery, its quality and performance directly affect and determine the working performance of the main engine. Since the mechanical seal mechanism involves many disciplines such as tribology, material science, fluid mechanics, solid mechanics, heat transfer, lubrication theory, etc., a complete design theory has not yet been formed, and many data are obtained by experiments. Therefore, the test technology of mechanical seal is very important. [0003] The nuclear main pump uses a mechanical seal to prevent reactor coolant from leaking along the pump shaft. It is a key component of the main...

AI Technical Summary

Problems solved by technology

So far, there has been no relevant test that can simulate both the hydrostatic mechanical seal test for the nuclear main pump and the hydrodynamic mechanical seal test for the nuclear main pump, and at the same time simulate the combined hydrodynamic and static pressure test for the nuclear main pump. Report on Test System for Mechanical Seal Test

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