Enclosed multi-layer curved surface cavity integrated exhaust manifold turbine box

The invention discloses a closed multi-layer curved surface cavity integrated exhaust manifold turbine box which comprises a turbine box body. The turbine box comprises an inner wall layer and an outer wall layer which are distributed at intervals inside and outside; a waste gas exhaust cavity channel is formed in the inner wall layer; a cooling water cavity channel is formed between the inner wall layer and the outer wall layer; the cooling water cavity channel is arranged on the outer side of the waste gas exhaust cavity channel in a surrounding manner; a plurality of waste gas inlets distributed at intervals are formed in the right side of the turbine box; a cooling water inlet is formed in the lower end of the right side of the turbine box; the cooling water inlet is communicated with the cooling water cavity channel; the waste gas inlet is communicated with the waste gas exhaust cavity channel; a cooling water outlet is formed in the upper end of the rear side of the turbine box; the cooling water outlet