control rod

简明释义

控制棒

英英释义

例句

1.In case of an emergency, the control rod can be fully inserted to shut down the reactor quickly.

在紧急情况下，可以完全插入控制棒以快速关闭反应堆。

2.If the control rod is not inserted correctly, it can lead to an unsafe increase in reactor temperature.

如果控制棒没有正确插入，可能会导致反应堆温度的不安全升高。

3.The reactor's safety relies heavily on the proper functioning of the control rod.

反应堆的安全在很大程度上依赖于控制棒的正常运作。

4.The operator monitored the movement of the control rod continuously to ensure stable operation.

操作员持续监测控制棒的移动，以确保稳定运行。

5.During the experiment, we adjusted the position of the control rod to manage the nuclear reaction rate.

在实验过程中，我们调整了控制棒的位置以控制核反应速率。

作文

In the realm of nuclear engineering, the term control rod refers to a crucial component used in nuclear reactors to manage the fission process. These rods are typically made from materials that absorb neutrons, such as boron or cadmium. The primary function of a control rod is to regulate the rate of the nuclear reaction, ensuring that it remains stable and safe. Without these rods, a reactor could potentially enter a state of uncontrolled reaction, leading to catastrophic consequences.The importance of control rods cannot be overstated. They are essential for maintaining the balance between the number of neutrons produced and the number of neutrons absorbed. In a nuclear reactor, when uranium atoms split, they release neutrons that can trigger further fission reactions. If too many neutrons are allowed to continue this chain reaction, the reactor can overheat or even explode. Control rods act as a safety mechanism by absorbing excess neutrons, thereby slowing down or stopping the reaction when necessary.Moreover, the positioning of control rods within the reactor core is critical. By adjusting how far the rods are inserted into the reactor, operators can finely control the power output. For instance, if more energy is needed, the rods can be withdrawn slightly, allowing more neutrons to propagate the reaction. Conversely, if there is a need to decrease the reactor's output or shut it down, the rods can be fully inserted, effectively absorbing more neutrons and halting the fission process.The design of control rods has evolved significantly over the years. Early reactors relied on simple designs, but modern reactors utilize advanced materials and technologies to enhance their effectiveness and safety. For example, some reactors use control rods that can be operated automatically through computer systems, allowing for rapid adjustments in response to changing conditions within the reactor.In addition to their role in controlling the fission process, control rods also play a vital role during the start-up and shutdown phases of a reactor’s operation. During start-up, the rods are initially inserted to prevent any premature reactions. As the reactor warms up and reaches operational levels, the rods are gradually retracted to allow the fission process to commence. When it is time to shut down the reactor, the rods are fully inserted to absorb all neutrons and halt the reaction completely.The concept of control rods also extends beyond just nuclear reactors. In various industrial applications, similar principles are applied to manage reactions and processes. For instance, in chemical engineering, certain catalysts or inhibitors can function similarly to control rods by regulating the speed of chemical reactions.In conclusion, control rods are a fundamental component of nuclear reactors, playing an essential role in ensuring safety and stability during the fission process. Their ability to absorb neutrons and regulate the reaction rate makes them indispensable in the field of nuclear engineering. As technology advances, the design and functionality of control rods will continue to improve, contributing to safer and more efficient nuclear energy production.

在核工程领域，术语控制棒指的是用于核反应堆中管理裂变过程的关键组件。这些棒通常由吸收中子的材料制成，如硼或镉。控制棒的主要功能是调节核反应的速率，确保其保持稳定和安全。如果没有这些棒，反应堆可能会进入失控反应状态，从而导致灾难性后果。控制棒的重要性不容小觑。它们对于维持产生的中子数量与被吸收的中子数量之间的平衡至关重要。在核反应堆中，当铀原子裂变时，它们释放出能够触发进一步裂变反应的中子。如果允许过多的中子继续这一链式反应，反应堆可能会过热甚至爆炸。控制棒作为一种安全机制，通过吸收多余的中子，从而减缓或停止反应。此外，控制棒在反应堆核心中的定位也至关重要。通过调整棒插入反应堆的深度，操作员可以精确控制功率输出。例如，如果需要更多的能量，可以稍微拔出棒，使更多的中子传播反应。相反，如果需要减少反应堆的输出或关闭它，则可以完全插入棒，有效吸收更多中子并停止裂变过程。控制棒的设计在过去几年中显著演变。早期反应堆依赖于简单的设计，但现代反应堆利用先进的材料和技术来增强其有效性和安全性。例如，一些反应堆使用可以通过计算机系统自动操作的控制棒，允许快速响应反应堆内变化条件的调整。除了在控制裂变过程中的作用外，控制棒在反应堆运行的启动和关闭阶段也发挥着至关重要的作用。在启动期间，棒最初被插入以防止任何提前反应。随着反应堆升温并达到操作水平，棒逐渐被拔出以允许裂变过程开始。当需要关闭反应堆时，棒完全插入以吸收所有中子并完全停止反应。控制棒的概念也不仅限于核反应堆。在各种工业应用中，类似的原理被应用于管理反应和过程。例如，在化学工程中，某些催化剂或抑制剂可以类似于控制棒的功能，通过调节化学反应的速度。总之，控制棒是核反应堆的基本组成部分，在确保裂变过程的安全性和稳定性方面发挥着重要作用。它们吸收中子和调节反应速率的能力使其在核工程领域不可或缺。随着技术的进步，控制棒的设计和功能将继续改善，为更安全、更高效的核能生产做出贡献。