Gas turbine flowmeter

The invention relates to the technical field of stainless steel corrugated pipes, and discloses a gas turbine flowmeter which comprises a meter body, a counter and a rectifier, the rectifier is fixedly installed at one end of the meter body, the counter is fixedly installed at one end of the rectifier, a cleaning mechanism is fixedly connected to the front end of the meter body, and a spare part locking mechanism is fixedly installed at one end of the meter body; according to the gas turbine flowmeter, through the arrangement of the cleaning mechanism, the spare part locking mechanism and the telescopic mechanism and the nozzle mechanism which are arranged on the cleaning mechanism, during later use, hydrochloric acid cleaning liquid is connected through a hydrochloric acid liquid inlet pipe, a valve is opened, and the hydrochloric acid cleaning liquid is injected into an injection cavity; the gas turbine flowmeter has the advantages that dirt in the internal impeller can be cleaned without dismounting the ga