A passive safety injection system for nuclear power plants
A passive, nuclear power plant technology, applied in the field of passive safety injection systems of nuclear power plants, can solve problems such as accidents and achieve the effect of ensuring safety
Active Publication Date: 2020-04-17
STATE NUCLEAR HUAQING BEIJING NUCLEAR POWER TECH R & D CENT +1
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Problems solved by technology
At this time, if the residual heat of the reactor core cannot be taken away, an accident will occur
Method used
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[0020] Figure 1-2 and the following description describe alternative embodiments of the invention to teach those of ordinary skill in the art how to make and reproduce the invention. In order to teach the technical solutions of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art should understand that modifications or substitutions from these embodiments will fall within the protection scope of the present invention. Those of ordinary skill in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. As such, the invention is not limited to the alternative embodiments described below, but only by the claims and their equivalents.
[0021] figure 2It is a passive safety injection system for nuclear power plants according to the present invention. The passive safety injection system for nuclear power plants according to the present invention ...
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The invention relates to a passive safety injection system for a nuclear power station. The passive safety injection system comprises an impounding reservoir in a safe case, a water supply pipe, a water supply isolation valve, a passive safety injection turbine pump, a pressure release valve at the secondary side of an evaporator, a steam discharging pipe, a safety injection pipe, cooling water and a safety injection isolation valve, wherein the bottom of the impounding reservoir in the safe case is higher than the top of a U-shaped pipe; the cooling water is stored in the impounding reservoir in the safe case; the impounding reservoir in the safe case communicates with the passive safety injection turbine pump through the water supply pipe and the water supply pipe isolation valve arranged on the water supply pipe; the passive safety injection turbine pump communicates with the secondary side of the evaporator through the steam discharging pipe and the pressure discharging valve of the secondary side of the evaporator arranged on the steam discharging pipe, and communicates with the secondary side of the evaporator through the safety injection pipe and the safety injection isolation valve arranged on the safety injection pipe; when the liquid level of the secondary side of the steam generator is reduced to the low liquid level, the reliable passive water supplementation is performed, so that the secondary side of the steam generator continuously unloads the afterheat of a reactor core of a reactor.
Description
technical field [0001] The invention relates to a passive safety injection system, in particular to a passive safety injection system for nuclear power plants. Background technique [0002] Safe nuclear power is a clean energy with high energy density, which plays an important role in protecting the ecological environment, adjusting the energy structure and ensuring energy security. However, once a safety problem occurs in a nuclear power plant, it will pose a huge threat to the staff, surrounding residents, and the ecological environment. Therefore, the safety of nuclear power plants is an important issue that people must consider when using nuclear power. At present, nuclear power plants tend to adopt passive safety technology to deal with accidents. The so-called passive safety technology refers to the use of natural forces to complete various cooling functions in the event of an accident. Natural forces can be generated by gravity, pressure of accumulator gas, and driv...
Claims
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IPC IPC(8): G21C15/18
CPCY02E30/30
Inventor 叶子申杨福明王楠石洋李玉全
Owner STATE NUCLEAR HUAQING BEIJING NUCLEAR POWER TECH R & D CENT