explosive limits

简明释义

爆炸极限

英英释义

例句

1.The safety manual states that all workers must be aware of the explosive limits 爆炸极限 of the chemicals they handle.

安全手册规定，所有工人必须了解他们处理的化学品的explosive limits 爆炸极限。

2.The laboratory was evacuated when the concentration of vapors exceeded the explosive limits 爆炸极限.

当蒸汽浓度超过explosive limits 爆炸极限时，实验室被疏散。

3.Proper ventilation is necessary to keep the air within explosive limits 爆炸极限 in confined spaces.

在封闭空间内，适当的通风是保持空气在explosive limits 爆炸极限 之内的必要条件。

4.Engineers must calculate the explosive limits 爆炸极限 of fuel mixtures to ensure safe operation.

工程师必须计算燃料混合物的explosive limits 爆炸极限 以确保安全操作。

5.Before starting any experiment, it's crucial to know the explosive limits 爆炸极限 of the gases involved.

在开始任何实验之前，了解所涉及气体的explosive limits 爆炸极限 是至关重要的。

作文

Understanding the concept of explosive limits is crucial in various fields, especially in chemistry and engineering. Explosive limits refer to the range of concentrations of a flammable substance in air that can ignite and cause an explosion. These limits are defined by two critical values: the Lower Explosive Limit (LEL) and the Upper Explosive Limit (UEL). The LEL is the minimum concentration of the substance needed for combustion, while the UEL is the maximum concentration beyond which the mixture becomes too rich to ignite. In practical terms, knowing the explosive limits of different substances helps in ensuring safety in environments where flammable gases or vapors may be present. For instance, in industrial settings such as oil refineries or chemical plants, workers must be aware of the explosive limits of various chemicals to prevent accidents. If the concentration of a flammable gas falls below the LEL, there is not enough fuel for an explosion; conversely, if it exceeds the UEL, there is insufficient oxygen for combustion. Consider a common example involving methane, a gas often used for heating and cooking. The LEL for methane is approximately 5% by volume in air, while the UEL is about 15%. This means that in a confined space, if the concentration of methane is between 5% and 15%, any spark could potentially ignite the mixture, leading to an explosion. Therefore, maintaining the concentration of methane within safe limits is essential for preventing hazardous situations.The importance of understanding explosive limits extends beyond industrial applications. In households, the use of propane or natural gas for heating also requires awareness of these limits. Homeowners should ensure proper ventilation to avoid the accumulation of gas that could reach its explosive limits. Regular maintenance of gas appliances is also critical to prevent leaks that could lead to dangerous concentrations of flammable gas.Moreover, the concept of explosive limits is not limited to gases alone; it also applies to dust and other particulate matter. Certain materials, when suspended in the air at specific concentrations, can create explosive atmospheres. This phenomenon is particularly relevant in industries such as grain handling and woodworking, where fine particles can become airborne and pose significant risks if they fall within their explosive limits.In summary, the understanding of explosive limits is vital for safety in various environments. Whether in industrial settings, households, or even during outdoor activities like camping, awareness of the explosive limits of flammable substances can help prevent accidents and ensure a safer environment. As we continue to work with chemicals and flammable materials, educating ourselves about these limits will contribute to a culture of safety and responsibility. By being informed and vigilant, we can minimize the risks associated with explosions and protect both ourselves and our surroundings.

理解爆炸极限的概念在多个领域中至关重要，尤其是在化学和工程方面。爆炸极限是指在空气中可引发爆炸的可燃物质浓度范围。这些极限由两个关键值定义：下爆炸极限（LEL）和上爆炸极限（UEL）。LEL是点燃所需的最低物质浓度，而UEL是超过该浓度后混合物过于丰富而无法点燃的最大浓度。在实际操作中，了解不同物质的爆炸极限有助于确保在可能存在可燃气体或蒸汽的环境中的安全。例如，在石油炼厂或化工厂等工业环境中，工人必须了解各种化学品的爆炸极限以防止事故。如果可燃气体的浓度低于LEL，则没有足够的燃料发生爆炸；相反，如果浓度超过UEL，则氧气不足以支持燃烧。考虑一个常见的例子，即甲烷，这是一种常用于加热和烹饪的气体。甲烷的LEL约为空气中5%的体积，而UEL约为15%。这意味着在封闭空间内，如果甲烷的浓度在5%到15%之间，任何火花都有可能点燃混合物，从而导致爆炸。因此，保持甲烷浓度在安全范围内对于防止危险情况至关重要。了解爆炸极限的重要性不仅限于工业应用。在家庭中，使用丙烷或天然气供暖也需要意识到这些极限。房主应确保适当通风，以避免气体聚集到其爆炸极限。定期维护燃气设备也是防止泄漏的重要措施，以防止可燃气体达到危险浓度。此外，爆炸极限的概念不仅限于气体；它还适用于灰尘和其他颗粒物。在特定浓度下，某些材料悬浮在空气中时会产生爆炸性气氛。这一现象在谷物处理和木工等行业尤为相关，因为细小颗粒可能会悬浮在空气中，如果落在其爆炸极限内，会造成重大风险。总之，理解爆炸极限对于各种环境中的安全至关重要。无论是在工业环境、家庭还是户外活动如露营中，了解可燃物质的爆炸极限都能帮助防止事故并确保安全的环境。随着我们继续使用化学品和可燃材料，教育自己关于这些极限的信息将有助于建立安全和责任的文化。通过保持知情和警惕，我们可以最大限度地减少与爆炸相关的风险，保护自己和周围环境。