Superheater and header structure of once-through boiler

The utility model relates to the technical field of thermal power, in particular to a once-through boiler superheater and header structure which comprises a superheater body, a header mechanism is arranged in the superheater body, the header mechanism comprises an inlet header, an outlet header and a header tube panel, the header tube panel comprises a chambering tube and a body tube, a first throttling hole is formed in the chambering tube, and a second throttling hole is formed in the body tube. According to the utility model, the chambering tube is arranged in the header tube panel, so that the temperature field of the direct-current double tangent circle boiler is distributed in an M-shaped structure along the width direction of the boiler, and the problem that the wall temperature exceeds the limit and leaks due to the fact that the throttling holes are blocked by foreign matters in the running process of an existing direct-current boiler superheater is solved; on the premise that wall temperature parame