Vacuum oil filling system and method for hydraulic damper of nuclear power station

Abstract

The invention discloses a vacuum oil filling system and method for a hydraulic damper of a nuclear power station. The vacuum oil filling system comprises a damper, an oil filling port arranged at the top end of the damper and an exhaust port and further comprises an oil tank, an oil storage device, a vacuum pump and multiple sealing hoses. The top end of the oil storage device is provided with a first valve and a second valve. The oil filling port is connected to the oil tank through the sealing hoses. The exhaust port is connected to the first valve of the oil storage device through the sealing hoses. The second valve of the oil storage device is connected with a vacuum pump through the sealing hoses. The vacuum oil filling system and method for the hydraulic damper of the nuclear power station have the following beneficial effects: the vacuum pump is utilized for vacuumizing the damper and the oil storage device; the pressure difference is utilized for automatically filling the damper with oil; therefore, dead corners present during manual oil-filling are solved; all oil-filling tasks are finished by one device and one person; and working efficiency is increased.

Description

technical field [0001] The invention relates to a hydraulic damper, in particular to a vacuum oiling system and method for a nuclear power plant hydraulic damper. Background technique [0002] The hydraulic damper for nuclear power plants is an anti-vibration support device that is sensitive to speed or acceleration, and is used to protect the key equipment or pipelines being supported. [0003] Dampers have no effect on slow motion caused by normal thermal expansion of equipment or piping. When subjected to a sudden load (earthquake or sudden pressure change), the damper becomes a rigid connection to limit displacement, so as to achieve the purpose of anti-vibration support. [0004] In 1995, the applicant company introduced a complete set of nuclear electric damper technology from Japan's Sanwa. On the basis of the imported technology, it focused on improving its ability to digest, absorb and re-innovate. On this basis, a series of nuclear grade hydraulic and mechanical ...

AI Technical Summary

Problems solved by technology

[0006] At present, the traditional oil filling method is manual oil filling, which requires the assembler to repeatedly pull and press the piston rod to remove the air bubbles in the hydraulic damper. In the test, the work efficiency is very low. When mass production, it is obvious that the efficiency is not high, which affects the progress; at the same time, there are insufficient oil filling of the hydraulic damper or there are air bubbles in the oil, which leads to the decrease of the dynamic and static performance of the damper and the oil The fluidity of the damper is poor, and there are many small fit gaps and damping structures inside the damper. After oil injection, there may be voids or air bubbles inside, which will affect the compressibility coefficient of the oil, and then affect the dynamic and static performance of the damper. Negative Effects

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