| 摘要 |
PURPOSE:To protect a measuring element from chemical corrosion and to expand a durable period by discharging dust flying into a flow rate measuring element to the outside of said element by gravity and cooling the element by cooling water. CONSTITUTION:Cooling water is supplied into the flow rate measuring element 10 through a conduit pipe 17 to cool the element 10 and full pressure and static pressure measuring conduits 12, 14 respectively and efficiently and then discharged to the outside through a drain pipe 18. Since the element 10 and the pipelines 12, 14 are kept at low temperature by the cooling action of the cooling water, the materials of the element 10 and the pipelines 12, 14 are prevented from physical and chemical quality change due to high temperature, the durable life is sharply expanded and a full pressure measuring hole T, a static pressure measuring hole S and the pipelines 12, 14 are prevented from the welding of high temperature dust contained in a gas to be measured to prevent these holes and pipelines from being clogged by the welded high temperature dust. |
