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A flywheel that prevents projectiles from being produced

A technology of flywheel and flying injection, which is applied in the field of flywheel, can solve the problems of increasing friction power consumption between the flywheel surface and the medium, failing to meet the structural space installation requirements, and damage to reactor coolant pump equipment, so as to avoid extrusion stress damage and increase Strength, the effect of reducing pressure

Active Publication Date: 2015-11-25
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • A flywheel that prevents projectiles from being produced
  • A flywheel that prevents projectiles from being produced
  • A flywheel that prevents projectiles from being produced

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Such as figure 2 , image 3 and Figure 4 As shown, a flywheel capable of preventing the generation of flying objects includes an annular casing 1 and at least two heavy metal blocks 2 located inside the casing 1 and evenly distributed in the circumferential direction of the flywheel 1 . Wherein, heavy metal block 2 is wedge-shaped structure, comprises top surface 21, bottom surface 22 and wedge-shaped side 23, and its bottom surface 22 is arranged on the inner diameter side of housing 1, and top surface 21 is arranged on the outer diameter side of housing 1, and top surface 21 and The bottom surface 22 can be an arc surface, a plane, or a combination of an arc surface and a plane. The length or arc length of the bottom surface 22 is greater than the length or arc length of the top surface 21, so that the heavy metal block 2 is trapezoidal or inverted fan-shaped with a wide inside and a narrow outside. The shape is installed on the flywheel; the housing 1 is provided...

Embodiment 2

[0024] as attached figure 2 and Figure 4 As shown, on the basis of Embodiment 1, in this embodiment, 8 pieces of heavy metal blocks 2 that adopt tungsten alloy to increase the moment of inertia are covered in the stainless steel housing 1 of the flywheel; the top surface 21 and the bottom surface 22 of the heavy metal block 2 are On the circular arc surface, the heavy metal block 2 is inlaid in the cavity of the housing 1 in an inverted sector shape. In the direction of the inner and outer diameters of the flywheel, the lengths of both sides of the wedge-shaped side 23 of the heavy metal block 2 change from large to small, among which 8 heavy metal blocks 2 The bottom surface can be surrounded by a torus. In this embodiment, the top surface 21 and the bottom surface 22 are arc-shaped, which can not only make the heavy metal block 2 and the shell 1 contact and fit more smoothly, but also make the extrusion stress of the heavy metal block 2 on the shell 1 more regular. In pr...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C15/24
CPCY02E30/30
Inventor 邓礼平赵雪岑
Owner NUCLEAR POWER INSTITUTE OF CHINA