A flywheel that prevents projectiles from being produced

Abstract

The invention discloses a flywheel for preventing missile production. The flywheel comprises a circular housing and at least two heavy metal blocks in the circular housing. The heavy metal blocks are uniformly distributed in the circumference direction of the flywheel. The heavy metal block has a wedge-shaped structure and comprises a top surface, a bottom surface and wedge-shaped side surfaces, the bottom surface is arranged at the inner side of the circular housing, the top surface is arranged at the outer side of the circular housing, and the length of the bottom surface is greater than the length of the top surface. Cavities for heavy metal block inlaying are arranged in the circular housing and the number and the structures of the cavities are the same as those of the heavy metal blocks. The flywheel improves a heavy metal block-caused extrusion stress bearing capacity of the flywheel in rotation without housing thickness increasing, prevents flywheel housing damage and missile production, has a simple and compact structure and can be installed easily and simply.

Description

technical field [0001] The invention relates to a flywheel, in particular to a flywheel used in a nuclear reactor capable of preventing the generation of flying objects. Background technique [0002] In order to meet the safety of the reactor core after a power failure, the reactor coolant pump of the nuclear power plant needs a longer idle time to provide the necessary core cooling flow. Therefore, the flywheel used is usually covered with stainless steel or other metal materials similar to For heavy metal flywheels such as tungsten alloy, in order to reduce the friction power consumption between the surface and the medium during normal operation of the flywheel, the flywheel needs to use the smallest possible external dimensions to obtain a large moment of inertia. However, due to the fact that the heavy metal covered by the flywheel is usually too heavy, from the perspective of processing, it is manufactured in blocks and then embedded in the disc-shaped flywheel. The str...

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Problems solved by technology

[0003] During the normal high-speed operation of the above-mentioned flywheel, the divided high-density heavy metal block 2 will generate a large centrifugal force, which will cause a large extrusion stress on the shell 1 covering the heavy metal block 2, which will easily cause damage to the flywheel shell 1 and cause Missiles, causing damage to reactor coolant pumps and surrounding equipment

[0004] At present, the solution to the above-mentioned problems is mainly to increase the strength and thickness of the casing, but the strength of the casing is related to the material used, and the casings used in existing flywheels have achieved high strength; and increasing the thickness of the casing will lead to The outer diameter of the flywheel increases, and the thickness of the shell is too large, which can not meet the installation requirements of the structural space, and will also increase the friction power consumption between the surface of the flywheel and the medium

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