Low-carbon steel tundish structure of slab continuous casting machine

The utility model provides a slab continuous casting machine low-carbon steel tundish structure which comprises a tundish wall body and a tundish cavity formed by the tundish wall body, the tundish wall body comprises a side wall and a bottom wall, and the tundish wall body is sequentially composed of a tundish outer layer, a permanent layer and a working layer from outside to inside; the low-carbon steel tundish structure of the slab continuous casting machine further comprises a turbulator fixed to one end of the bottom wall of the tundish, a large ladle long nozzle arranged above the turbulator, a blocking dam fixed to the bottom wall of the tundish and a tundish upper nozzle arranged at the other end of the bottom wall of the tundish. The tundish flow control stopper rod is located in the tundish cavity and arranged above the tundish upper nozzle, and the tundish lower nozzle is arranged below the tundish upper nozzle. The top face of the tundish upper nozzle is lower than the bottom face of the retaining