本实用新型涉及核燃料元件领域，具体涉及一种压水堆燃料组件上管座。
The utility model relates to the field of nuclear fuel components, in particular to an upper tube seat of a pressure water reactor fuel element.
对于压水堆燃料组件而言，栅格稠密、几何形状复杂，对中子的吸收较强。
Considering fuel assembly for PWR, it is possessed of dense lattice, complex geometry and strong absorption of neutron.
这是个沸水式反应堆和压水式反应堆的，设计上的重要区别，沸水型反应堆的燃料组件，是罐装起来确保我们得到，的冷水的供应足够。
This is a very important design difference between a BWR and a PWR. So, BWR fuel assemblies are essentially canned to make sure we have an adequate supply of cooling water.
同时，在四角位置分别对称布置定位销孔，从而使压水堆燃料组件的安装更加灵活方便。
Meanwhile, the four corners are respectively and symmetrically provided with positioning pin holes, so that the assembly of the pressure water reactor fuel element can be more flexible and convenient.
同时，在四角位置分别对称布置定位销孔，从而使压水堆燃料组件的安装更加灵活方便。
Meanwhile, the four corners are respectively and symmetrically provided with positioning pin holes, so that the assembly of the pressure water reactor fuel element can be more flexible and convenient.
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