The formula for calculating transient temperature field in pulse reactorfuelelement is derived with lumped parameter models.
采用集总参数模型，推导了脉冲堆燃料元件瞬态温度场的计算公式；
2
The utility model relates to the field of nuclear fuel components, in particular to an upper tube seat of a pressure water reactorfuelelement.
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。
3
Meanwhile, the four corners are respectively and symmetrically provided with positioning pin holes, so that the assembly of the pressure water reactorfuelelement can be more flexible and convenient.