Pressure vessel penetration techniques
阅读：331发布：2022-06-30
专利汇可以提供Pressure vessel penetration techniques专利检索，专利查询，专利分析的服务。并且Control line penetration of a nuclear reactor pressure vessel is achieved through the side of the vessel below the junction of the vessel main barrel portion and the reactor head. The control lines enter the pressure vessel in the form of a bundle of conduits at a point which is out of the main coolant flow path and the control lines are provided with disconnect means internally of the vessel.，下面是Pressure vessel penetration techniques专利的具体信息内容。
1. In a nuclear reactor, the reactor having a fuel assembly including fissionable fuel elements and neutron absorber elements movable with respect to the fuel elements, the fuel assembly and fluid responsive actuators for positioning the absorber elements being positioned within a pressure vessel, the actuators including piston means coupled to the absorber elements, the pressure vessel having a main portion and a removable head, the improvement comprising: a first plurality of conduits commensurate in number with all of the absorber element actuators present in the reactor, said first plurality of conduits being located externally of the pressure vessel and having fluidic actuator position control signals applied to first ends thereof, the second ends of said conduits of said first plurality being formed into a bundle of tubular members closely positioned to one another; a second plurality of conduits commensurate in number with said first plurality of conduits, said second plurality of conduits being located internally of the pressure vessel and having first ends coupled to respective absorber element actuators, the second ends of said conduits of said second plurality being formed into a bundle of tubular members closely positioned to one another; and means for coupling the second ends of each of said first plurality of conduits to the second ends of respective of said second plurality of conduits, said coupling means passing through the wall of the pressure vessel main portion and defining a liquid-gas separation between the interior and exterior of the pressure vessel whereby absorber element position control signals generated externally of the pressure vessel may be applied to the fluid responsive actuators at one side only of the actuator pistons, said coupling means being associated with an aperture in the pressure vessel main portion wall and comprising: plug means sealed to the pressure vessel main portion wall about the periphery of the aperture therein, said plug means having a plurality of passages therethrough, the second ends of sAid conduits of said first plurality being terminated in respective of said plug means passages adjacent the exterior side thereof; connector means positioned internally of the pressure vessel, said connector means having a plurality of passages therethrough, said second ends of the second plurality of conduits being connected to respective of said connector means passages; and a third plurality of conduits extending between the pressure vessel side of said plug means and said connector means, said third plurality of conduits being terminated at first ends in respective of said plug means passages whereby said plug means provides continuous communication between the individual conduits of said first and third pluralities, the second ends of said conduits of said third plurality being coupled to the second ends of respective of said second plurality of conduits by respective passages in said connector means.
2. The apparatus of claim 1 wherein the reactor fuel assembly is positioned within a core barrel, the core barrel being removably supported within and spacially displaced from the pressure vessel, and wherein said connector means and plug means are vertically displaced and said third plurality of conduits is located in the space between the core barrel and pressure vessel.
3. The apparatus of claim 2 further comprising: shroud means surrounding and protecting said third plurality of conduits.
4. The apparatus of claim 1 further comprising: shroud means surrounding and protecting said third plurality of conduits.
5. The apparatus of claim 1 wherein said connector means comprises: multiple seal disconnect means for simultaneously interrupting and reestablishing communication between the conduits of said second and third pluralities.
6. The apparatus of claim 3 wherein said connector means comprises: multiple seal disconnect means for simultaneously interrupting and reestablishing communication between the conduits of said second and third pluralities.
7. The apparatus of claim 1 wherein a liquid coolant is circulated through the reactor pressure vessel and nozzle means is provided in the pressure wall for discharging the coolant into the pressure vessel, said coupling means being positioned above the coolant discharge nozzle means whereby said coupling means is disposed in a location which is out of the main reactor coolant flow path.
8. The apparatus of claim 3 wherein a liquid coolant is circulated through the reactor pressure vessel and nozzle means is provided in the pressure wall for discharging the coolant into the pressure vessel, said coupling means being positioned above the coolant discharge nozzle means whereby said coupling means is disposed in a location which is out of the main reactor coolant flow path.
9. The apparatus of claim 6 wherein a liquid coolant is circulated through the reactor pressure vessel and nozzle means is provided in the pressure wall for discharging the coolant into the pressure vessel, said coupling means being positioned above the coolant discharge nozzle means whereby said coupling means is disposed in a location which is out of the main reactor coolant flow path.
10. The apparatus of claim 2 wherein said connector means is positioned above said plug means and substantially at the level of the junction of the pressure vessel head and body portions whereby said connector means is accessible with the pressure vessel head removed.
11. The apparatus of claim 6 wherein said multiple seal disconnect means is positioned above said plug means and substantially at the level of the junction of the pressure vessel head and body portions whereby said multiple seal disconnect means is accessible with the pressure vessel head removed.
12. The apparatus of claim 9 whereby said multiple seal disconnect means is positioned above said plug means and substantially at the level of the junction of the pressure vessel head and body portions whereby said multiple seal disconnect means is accessiblE with the pressure vessel head removed.
13. The apparatus of claim 5 wherein said disconnect means comprises: movable seal means, said seal means being permanently connected to the second ends of the conduits of said third plurality and releasably engaging the second ends of the conduits of said second plurality; means for resiliently urging said seal means into leak proof engagement with the conduits of said second plurality; and means limiting the movement of said seal means whereby the conduits of said second plurality may be withdrawn from said seal means upon removal of the reactor core barrel.
14. The apparatus of claim 9 wherein said disconnect means comprises: movable seal means, said seal means being permanently connected to the second ends of the conduits of said third plurality and releasably engaging the second ends of the conduits of said second plurality. means for resiliently urging said seal means into leak proof engagement with the conduits of said second plurality; and means limiting the movement of said seal means whereby the conduits of said second plurality may be withdrawn from said seal means upon removal of the reactor core barrel.
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