Radioisotope heat source boiler for power generators专利检索-生物屏蔽层核反应堆核能专利检索查询-专利查询网

Radioisotope heat source boiler for power generators

阅读：204发布：2021-03-07

专利汇可以提供Radioisotope heat source boiler for power generators专利检索，专利查询，专利分析的服务。并且The boiler essentially comprises a vessel of revolution having an external heat-insulating covering and a radioisotope source which is housed within the vessel. The source is constituted on the one hand by two blocks of revolution formed of material which is capable of providing a good biological shield. A peripheral recess is formed in each block in order to accommodate a tightlyfitting annular member, said member being constructed of material having a radioactive absorption coefficient which is higher than that of the blocks. The source is constituted on the other hand by a charge of radioelements formed by a series of clad radioactive plates arranged in stacks. The complete radioisotope source unit is immersed in a cooling liquid. The top end-wall of the boiler proper constitutes the hermetic cover of the vessel. A safety member which is welded to the upper block and to the cover ensures falling of the vessel and of the radioisotope source in the event of dangerous overheating.，下面是Radioisotope heat source boiler for power generators专利的具体信息内容。

权利要求

1. A boiler for power generators and in particular for highpower electric generators, wherein said boiler comprises a vessel of revolution which is fabricated from stainless steel and provided with an external heat-insulating covering formed of a laminated structure of layers having low conductivity and reflecting layers, a radioisotope source housed within said vessel and constituted on the one hand by two blocks of revolution fabricated from a material which is capable of providing good biological protection and has good heat conductivity, said two blocks being placed at a small distance from each other within said vessel so that the axes of revolution thereof should coincide with the axis of said vessel and being each provided with a peripheral recess in which is tightly fitted an annular member formed of material having a radioactive absorption coefficient which is higher than that of said blocks and on the other hand by a charge of radioelements formed of a series of clad radioactive plates which are housed in the space between said blocks and have the shape of very flat discs whose end faces are oriented at right angles to the axis of revolution of said blocks, said plates being arranged in stacks and each stack being clamped between said blocks, the complete radioisotope source being immersed in an organic cooling liquid having a boiling point which is highEr than 250*C, and a boiler proper whose top end-wall constitutes the hermetic cover of said vessel, a safety member which is fusible at a given temperature and welded to the upper block and to said cover being intended to ensure falling of said vessel and of said radioisotope source in the event of dangerous overheating of said source.

2. A boiler in accordance with claim 1, wherein said laminated structure is composed of layers of glass wool and very thin aluminum sheets.

3. A boiler in accordance with claim 1, wherein the two blocks of revolution are formed of copper.

4. A boiler in accordance with claim 1, wherein the two blocks of revolution are formed of tungsten.

5. A boiler in accordance with claim 1, wherein said annular member is formed of depleted uranium.

6. A boiler in accordance with claim 1, wherein said annular member is formed of tungsten.

7. A boiler in accordance with claim 1, wherein said plates are formed of cobalt-60.

8. A boiler in accordance with claim 1, wherein said plates are formed of strontium-90.

9. A boiler in accordance with claim 1, wherein said cooling liquid is a diphenyl-diphenyloxide mixture.

10. A boiler in accordance with claim 1, wherein said cooling liquid is liquid sodium or a liquid sodium-potassium mixture.

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Radioisotope heat source boiler for power generators

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