论文部分内容阅读
本例题是在通风防尘防毒技术培训班中,供学员设计吸气罩计算抽风量的作业题。不同的罩型,计算方法不同,也就是罩口的速度场不同。设计的罩一定要适用操作条件,并保证有必需的抽风量,才能达到预期效果。【综合例题】某厂有一焊接作业,工作范围大约800mm×1400mm。如允许做一工作台,可在工作台上操作。试设用底部抽风罩、箱式罩(留长边操作,罩高600mm)及沿工作台长边设旁侧平口罩。请
This example is in ventilation and dustproof anti-virus technology training course, for students to design suction cup calculation exhaust volume operation problem. Different cover type, different methods of calculation, which is the mouth of the mouth of the speed field is different. Design hood must apply the operating conditions, and to ensure that the necessary amount of exhaust in order to achieve the desired results. Integrated Example】 【a factory has a welding operation, the scope of work about 800mm × 1400mm. If allowed to do a workbench, can work on the workbench. Try to set the exhaust hood at the bottom, box cover (stay long side operation, cover 600mm high) and along the long side of the bench set side flatscreen. please