Thermal power plant valve signboard

The utility model provides a thermal power plant valve signboard which comprises a locating plate, a signboard body and two buckle assemblies, symmetrical L-shaped sliding plates are arranged at the upper end and the lower end of the front side of the locating plate respectively, locating holes are formed in one sides of the two L-shaped sliding plates, the signboard body is inserted into the two L-shaped sliding plates, and the two buckle assemblies are arranged on the two L-shaped sliding plates. Containing cavities are formed in the upper portion and the lower portion of one side of the signboard body, and arc-shaped grooves are formed in the lower ends of the containing cavities. The two buckle assemblies each comprise a positioning button and a compression spring, a rotating shaft is installed at one end of each positioning button, the rotating shafts are rotationally connected with the inner walls of the two sides of one end of the containing cavity, the compression springs are located in the arc-shaped