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A pebble bed high temperature reactor fuel visual device

A high-temperature reactor and fuel technology, applied in the field of reactor equipment, can solve problems such as local defects of components, and achieve the effect of rapid replacement

Active Publication Date: 2012-02-08
CHINERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the design, processing and testing specifications of fuel elements can guarantee the structural integrity of new fuel elements, since the fuel elements have to go through transportation, loading and other processes, it may cause local defects on the surface of the elements caused by collisions and other reasons. It is very necessary to inspect the integrity of the appearance of new fuel elements before they enter the fuel handling system and remove damaged elements in time

Method used

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  • A pebble bed high temperature reactor fuel visual device
  • A pebble bed high temperature reactor fuel visual device
  • A pebble bed high temperature reactor fuel visual device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The two end plates 4 are welded to the casing 10, the V-shaped rail 16 with the dust hole 8 is fixed on the rail bracket 11 by bolts, and the rail bracket 11 is bolted to the bottom surface of the casing 10; The axes coincide and are fixedly placed on one end of the V-shaped track 16 close to the outlet flange 6; the inner diameter axes of the inlet flange 1 and the outlet flange 6 coincide with the nominal axis of the V-shaped track 16, and are welded to the outside of the two end plates 4 respectively; The plate 12 and the lower baffle 15 are respectively inserted into the inner side of the two end plates 4 along the guide groove, and the size and insertion depth are sufficient to block the ball flow channel; the two inner blocks 3 and the four outer blocks 13 are fixed on the inner side of the two end plates 4 by bolts An arc-shaped track is formed, and both ends of the plexiglass cover 2 are embedded in the arc-shaped track to form an openable and closeable visual pa...

Embodiment 2

[0028] The two end plates 4 are connected with the shell 10 by welding, the parallel guide rail 17 is fixed on the track bracket 11 by bolts, and the track bracket 11 is bolted to the bottom surface of the shell 10; the inner diameter axis of the detection ring 7 coincides with the nominal axis of the parallel guide rail 17, and is fixed in parallel The guide rail 17 is close to one end of the outlet flange 6; the inner diameter axes of the inlet flange 1 and the outlet flange 6 coincide with the nominal axis of the parallel guide rail 17, and are respectively welded to the outside of the two end plates 4; the upper baffle 12 and the lower baffle 15 are respectively along the guide rails. The slot is inserted into the inner side of the two end plates 4, and the size and insertion depth are enough to block the ball flow channel; the two inner blocks 3 and the four outer blocks 13 are fixed on the inner side of the two end plates 4 by bolts to form an arc-shaped track, and the ple...

Embodiment 3

[0030] The two end plates 4 are welded to the casing 10, the circular rail 18 with the dust hole 8 is fixed on the rail bracket 11 by bolts, and the rail bracket 11 is bolted to the bottom surface of the casing 10; the inner diameter axis of the detection ring 7 and the circular rail 18 nominal The axes coincide and are fixedly placed on one end of the circular track 18 close to the outlet flange 6; the inner diameter axes of the inlet flange 1 and the outlet flange 6 coincide with the nominal axis of the circular track 18, and are welded to the outside of the plates 4 at both ends respectively; The plate 12 and the lower baffle 15 are respectively inserted into the inner side of the two end plates 4 along the guide groove, and the size and insertion depth are sufficient to block the ball flow channel; the two inner blocks 3 and the four outer blocks 13 are fixed on the inner side of the two end plates 4 by bolts An arc-shaped track is formed, and both ends of the plexiglass co...

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Abstract

The invention provides a fuel visual observation device for a pebble-bed high-temperature reactor, which is characterized in that the device comprises a shell, two end plates respectively arranged at two ends of the shell, an inlet flange and an outlet flange which are respectively connected with the end plates at two ends of the shell, a track bracket arranged inside the shell, a pebble track arranged on the track bracket, a detection ring arranged at one end of the pebble track, which is close to the outlet flange, an upper baffle arranged at the end close to the inlet flange, and a lower baffle arranged at the end close to the outlet flange. A guide groove arranged on the upper baffle along the shell is inserted into the inner side of the adjacent end plate, and a guide groove arranged on the lower baffle along the shell is inserted into the inner side of the adjacent end plate. The fuel visual observation device can conveniently detect the appearance and structural integrality and the size of a new fuel element quickly so that unqualified new fuel elements can be taken out timely.

Description

technical field [0001] The invention relates to a new fuel visual device for a pebble bed high temperature reactor for checking the structural integrity of a new fuel element, belonging to the field of reactor equipment. Background technique [0002] The non-stop fuel loading and unloading function of the pebble bed type high temperature gas-cooled reactor is realized by the favorable geometry of spherical fuel elements. The spherical fuel elements are loosely stacked in the core, and the fuel loading and unloading system realizes the loading and unloading of the fuel and multiple passes through the core to ensure the best fuel circulation, so that the excess reactivity in the core is kept to a minimum, so that the unloaded spent spent Fuel consumption is more uniform. The fuel used in the High Temperature Gas-cooled Reactor Nuclear Power Plant Demonstration Project (HTR-PM) is a spherical element with a diameter of 60 mm. Under normal operating conditions, a certain amount...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C17/06
CPCY02E30/30
Inventor 李红克张海泉王鑫刘继国吴宗鑫张作义
Owner CHINERGY CO LTD