ODORIZATION OF GAS AND DEVICE FOR IT

摘要

PURPOSE:To insure odorization of gas to a consistent concn., by attaching a bypass pipe provided with a odorant tank to a gas conduit pipe and controlling flow of gas passing through the bypass pipe in keeping with changes in pressure and temp. of the gas. CONSTITUTION:A bypass pipe 2 provided with an odorant tank 6 is attached to a gas conduit pipe 1. An odorant is vaporized into gas passing through the bypass pipe 2 to saturation in order to effect odorization of the gas. Pressure 7 in the odorant tank 6 and temp. 8 near the outlet of the tank 6 are sensored and these two variables are put in a computer 4 for calculation of a correction value and control of gas flow in the bypass pipe 2 through adjustment of a control valve 3. Thus, the gas flow is automatically controlled and the concn. of the odorant is maintained at a constant level even when the amt. of evaporated odorant is varied by change of temp. and pressure of gas passing through the bypass pipe 2.