Steam inlet chamber structure capable of balancing pipeline thrust and preventing turbulent flow from diffusing

The invention discloses a steam inlet chamber structure capable of balancing pipeline thrust and preventing turbulent flow from diffusing, and relates to the technical field of steam turbines, the steam inlet chamber structure comprises a steam inlet, a flow guide transition expansion section, an annular cavity, a steam outlet and a turbulent flow preventing structure, the steam inlet is communicated with the annular cavity through the flow guide transition expansion section, and the flow guide transition expansion section is communicated with the annular cavity through the flow guide transition expansion section; the cross sectional area of the diversion transition expansion section is gradually increased according to the flow direction of a medium, and the steam outlet corresponds to a medium outlet of the annular cavity. The steam admission chamber structure can effectively improve the uniformity of steam admission of steam flow, relieve sudden change of steam admission speed, effectively reduce mutual mix