笼式瓦斯测定器的研制

On development of cage-type gas detector

由瓦斯与空气组成的混合气体,瓦斯浓度的大小取决于二者的质量或密度.可以通过浮子来测定瓦斯的浓度.浮子在混合气体中受到浮力、重力、阻力等作用.浮力的大小取决于2气体的密度与自身体积.由于浮子与瓦斯浓度同时涉及到2气体的密度,按照流体力学、动力学的基础理论,可导出二者的关系式.在浮子上浮、下沉、平衡的3种运动状态下,以平衡状态为切入点,计算简便,检测直观.

When gas and air is combined into a mixed gas, its gas density is determined by the mass or the density of the gas and the air. The gas density can be determined by floater, which is affected by buoyancy force, gravity and resistance, floater and etc. The buoyancy force is determined by the gas and the air＇ s density and volume. Due to the fact that both forth based on density are involved in the density of the gas and the air, the relationship between them can be drawn the fluid dynamics theory and the dynamics theory. Under the three states of motion when the floater is floating upward, sinking and balanced, one can take the balanced state of motion as the starting point, and its calculation is easy and the detection is visualized.