High-Speed Passive Shut-Off Device for Shut-Off of Feed-Water Flow in a Brest-Type Reactor Facility in Accidents with Solidification of the Lead Coolant

Chistov, A. S.; Savikhin, O. G.; Ovchinnikov, V. F.

doi:10.1134/s0040601522060015

Cited by 1 publication

(3 citation statements)

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“…The driven spring is manufactured using Ni-Ti alloys with shape memory effect and the material of return spring is 316L stainless steel. The rubber parts in the valve should possess anti-corrosion and wear-resistance [1,4,11].…”

Section: The Materials Of the Mechanical Temperature-driven Shut-off ...mentioning

confidence: 99%

“…However, the electronically-controlled water-steam sampling device is usually equipped with a protecting apparatus that includes a temperature sensor, a temperature controller and a solenoid valve to protect the device from overheating. At present, the temperature sensor T100 is mostly used in China to sense the temperature of sample water and open and close the electron magnetic valve by a temperature controller [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The temperature sensor generally has high sensitivity within a certain temperature range, while the sensitivity of the temperature sensor is low when the temperature exceeds a certain value, resulting a decreasing of stability of the device. In addition, that the temperature sensor works contumaciously under high temperatures for a long time will, reduce its service life [3][4].…”

Section: Introductionmentioning

confidence: 99%

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The Design of a Mechanical Temperature-driven Shut-off Valve

Zheng-Cun

Chun-Bai

Zhu

2023

J. Phys.: Conf. Ser.

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The structural design of a mechanical temperature-driven shut-off valve used in the water and steam sampling device of a power plant is designed using a Iventor drawing software. A NiTi shape memory alloy with high temperature-sensitivity is used as the driven spring to control the opening and closing of the valve. In addition to the design of the structures and common parts of the shut-off valve, the mechanical calculation and parameter-design of the driven spring are also carried out. The valve is unimpeded and can take water-steam samples under the normal state. When the temperature exceeds a 49 oC, the valve will be shut off due to the driven spring extends and the water intake will stop. When it is necessary to take water-steam samples again, it can be reset manually.

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Section: The Materials Of the Mechanical Temperature-driven Shut-off ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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