Gas pipeline flow control device

The utility model discloses a gas pipeline flow control device which comprises a flow control valve and a fine adjustment valve, the bottom of the flow control valve is connected with a gas inlet pipe through a first flange, the top of the flow control valve is connected with a gas outlet pipe through a second flange, and the fine adjustment valve is fixed on the gas outlet pipe and comprises a fixing frame, a fine adjustment screw and a partition plate. The fixing frame is fixed to the gas outlet pipe, a first threaded hole is formed in the top of the fixing frame, the fine adjustment screw is in threaded connection with the first threaded hole, the partition plate is arranged at the bottom end of the fine adjustment screw and movably inserted into the gas outlet pipe, and the flow control device can improve the precise control degree of gas flow in the gas pipeline. 本实用新型公开了一种气体管道流量控制装置，包括流量控制阀和微调阀，流量控制阀的底部通过第一法兰连接有进气管，流量控制阀的顶部通过第二法兰连接有出气管，出气管上固定有微调阀，微调阀包括固定架、微调螺杆和隔断板，固定架固定在出气管上，顶部设有第一螺纹孔，微调螺杆与第一螺纹孔螺纹连接，隔断板