Warm braw wet return with throttle structure

The utility model discloses a warm braw wet return with throttle structure, be in including main tubular metal resonator, connection the branch pipe of main tubular metal resonator one end connects and welds and is in a plurality of support on the main tubular metal resonator, the outside extension in one end edge that branch pipe connects there is the round weld part, the weld part includes levelwelding face and connects level welding face with the through arc -shaped surface at branch pipe connection end section edge, just the interior profile of level welding face with the outer profile ofwelding that main tubular metal resonator corresponds is unanimous, it has the pipe shaft through -hole to open on the main tubular metal resonator face of weld, and the diameter of pipe shaft through -hole far is less than the internal diameter that branch pipe connects. The increase of main tubular metal resonator pipeline flow resistance has not been avoided inside need not stretching into main tubular metal resonator