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Nuclear-grade direct-current valve electric device for pressurized water reactor nuclear plant

A pressurized water reactor nuclear power plant, valve electric technology, applied in valve device, valve operation/release device, valve details, etc., can solve problems with high requirements, achieve low cost, simple, reasonable and compact structure design, and fill the effect of technology gaps

Inactive Publication Date: 2013-02-06
常州电站辅机股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high requirements, it has never been developed and produced in China

Method used

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  • Nuclear-grade direct-current valve electric device for pressurized water reactor nuclear plant
  • Nuclear-grade direct-current valve electric device for pressurized water reactor nuclear plant
  • Nuclear-grade direct-current valve electric device for pressurized water reactor nuclear plant

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Embodiment Construction

[0026] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] Such as figure 1 As shown, this embodiment provides a nuclear-grade DC valve electric device for a pressurized water reactor nuclear power plant, including a DC motor 1, a manual and electric switching mechanism 2, a stroke control mechanism, an opening mechanism 4, a torque control mechanism and a control system, The DC motor 1 drives the valve electric device, the rotor of the DC motor 1 is provided with a motor gear 7, and the motor gear 7 is meshed with a worm gear 8, and the worm gear 8 is arranged on a worm 9, and the worm 9 is meshed with a turbine 10, The turbine 10 is set on the output shaft 6, and the output shaft 6 is connected to the valve; the manual and electric switching mechanism 2 includes a hand wheel 11, a worm 9 and a turbine 10, and the valve electric device is operated by electric transmission, and the manual valv...

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Abstract

The invention provides a nuclear-grade direct-current valve electric device for a pressurized water reactor nuclear plant. The nuclear-grade direct-current valve electric device comprises a direct-current motor, a manual-electric switching mechanism, a travel control mechanism, an opening mechanism, a torque control mechanism and a control system. The nuclear-grade direct-current valve electric device for the pressurized water reactor nuclear plant has performances of high-temperature resistance, irradiation resistance, seismic resistance and the like by using a 250V direct-current power supply, can provide output torque required by turning-on and turning-off of a valve in a work environment of the nuclear plant, can be used for the nuclear plant in emergency and can be used in period of losing an alternating-current power supply and designing reference accidents and safe shutdown accidents with or without losing an offsite power supply. The nuclear-grade direct-current valve electric device for a pressurized water reactor nuclear plant fills in the technical blanks and is simple and compact in structural design and low in cost.

Description

technical field [0001] The invention relates to a direct-current valve electric device, in particular to a nuclear-grade direct-current valve electric device for a pressurized water reactor nuclear power plant. Background technique [0002] The development of nuclear power is an important measure to speed up the adjustment of my country's energy structure. With the formulation and implementation of China's nuclear power development plan for the next 20 years, my country's nuclear power has entered a period of rapid development. How to balance between ensuring the safety of nuclear facilities and meeting energy demand is a question that needs to be carefully considered in the process of China's nuclear power development. [0003] Due to the accident at the Fukushima nuclear power plant in Japan, the reason was that the core melted. When the accident occurred, the emergency diesel generators of some reactors could not be started normally. Looking at China's nuclear power saf...

Claims

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Application Information

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IPC IPC(8): F16K31/05F16K31/53
Inventor 姜迎新葛润平蒋亚培孟晶晶
Owner 常州电站辅机股份有限公司
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