5 results about "Nuclear system" patented technology

To reduce monitoring cost in a nuclear system.SOLUTION: A nuclear system comprises: a nuclear reactor core; a heat conductor that conducts heat which is generated by nuclear reaction of nuclear fuel in the nuclear reactor core to outside by means of a cooling medium; a reactivity control device that has a plurality of control drums in which a neutron absorption part arranged outside the nuclear reactor core to absorb neutrons is provided; a state detector that detects an operational state of a nuclear reactor; and an analysis unit that reproduces the operation state of the nuclear reactor in a virtual space using a virtual model of the nuclear reactor on the basis of a detection result of the state detector.SELECTED DRAWING: Figure 3

A structure and process for containing a nuclear reaction is disclosed. The structure and process may involve a nuclear containment structure including a plurality of metallic rings stacked axially to form the nuclear containment structure, the nuclear containment structure being configured to: mitigate, by using a physical barrier, the movement of radionuclides from inside a containment structure to a surrounding space; shield, by varying the alloy properties throughout the containment structure, an exterior of the containment structure from radiation produced inside of the containment structure; regulate, by transferring thermal energy, a temperature within the containment structure; regulate, by storing thermal energy, the temperature within the containment structure; shield, components within the nuclear containment structure from kinetic events external to the nuclear containment structure; and shield, the external environment, from kinetic events within the nuclear containment structure.

The invention discloses a critical parameter prediction method, a readable storage medium and a device, and belongs to the technical field of nuclear systems, and the prediction method comprises the steps: determining a to-be-predicted new nuclear system and a calculated value of an existing critical experiment; calculating sensitivity vectors of the new nuclear system and the critical experiments to the nuclear data; on the basis of the calculated value and the sensitivity vector, in combination with the relationship between the experimental value of the existing experiment, the experimental uncertainty and the critical experimental coefficient, constructing a calculation formula of the critical parameter predicted value and the predicted uncertainty of the new nuclear system; solving a coefficient of a critical experiment enabling the uncertainty of the prediction parameters to be minimum; and substituting the coefficient into the two calculation formulas to obtain a predicted value and the uncertainty thereof. The method is stored in the readable storage medium. The device comprises a terminal program for executing the steps of the method. According to the method, the information of a plurality of critical experiments can be effectively integrated, the critical parameters can be more reliably and accurately predicted under the condition of lack of very similar critical experiments, and the uncertainty of the prediction parameters can be more effectively compressed.

The invention discloses an automatic building seismic spectrum fitting and structure checking system for a nuclear fusion device, and the system comprises a GB parameter library and index module which is used for carrying out the retrieval through an index key, and returning a parameter set composed of a specified data field; the spectrum generation and fitting module is used for calling a GB database to extract parameters required by an anti-seismic design according to the internal data of the parameter set, automatically cutting off negative values, controlling the change of a spectrum tail to be consistent, and generating a fitted horizontal earthquake influence coefficient curve, a vertical earthquake influence coefficient curve and a corresponding frequency acceleration spectrum; the static equivalent and FRS judgment module is used for obtaining a first inherent frequency through modal analysis in fitting data, judging according to a preset threshold value, and respectively and correspondingly adopting static equivalent acceleration and response spectrum analysis operation; and the data export and interface module is used for outputting the readable load spectrum file. According to the invention, automatic generation and export operation of an earthquake influence curve and a frequency acceleration spectrum can be realized, and anti-seismic spectrum analysis and static strength check of a nuclear fusion device are supported.