Impact pipe orifice displacement prevention structure for plate heat exchanger

The anti-impact pipe orifice displacement structure comprises a pipe box and a pipe connecting flange, the pipe box is arranged at a first corner hole where a cold medium enters and a second corner hole where a hot medium enters relative to a clamping plate, a through hole is formed in the side, away from the clamping plate, of the pipe box, and a through hole is formed in the side, away from the clamping plate, of the pipe box. The through hole is connected with one end of a connecting pipe in the pipe connecting flange, and the other end of the connecting pipe is connected with a flange in the pipe connecting flange. The connecting pipe flange is simple in structure and convenient to install, the transverse center distance and the longitudinal center distance between the angle holes can be adjusted by adjusting the pipe opening displacement structures on the angle holes, and media can be prevented from directly impacting the plate sheet through the off-center arrangement of the connecting pipe flange. 本实用新型