Anti-backfire nozzle and hydrogen combustion gas turbine

The invention belongs to the technical field of hydrogen combustion gas turbines, and discloses an anti-backfire nozzle and a hydrogen combustion gas turbine.The anti-backfire nozzle comprises a shell and a piston assembly, a medium cavity is formed in the shell, a Tesla valve channel and a piston sliding way which are communicated with each other are further formed in the inner wall of the shell, an inlet of the Tesla valve channel is communicated with the medium cavity, and an outlet of the Tesla valve channel is communicated with the piston sliding way; the piston assembly comprises an isolation disc and a piston plate, the isolation disc is arranged in the medium cavity in a sliding mode and divides the medium cavity into a first cavity and a second cavity, and the piston plate synchronously slides along with the isolation disc in the piston sliding way. When tempering occurs, the impact force pushes the isolation disc to drive the piston plate to slide in the piston slide way, a low-pressure area is form