Stable plate heat exchanger and heat exchange equipment

The utility model belongs to the technical field of heat exchange parts of nuclear power stations, and particularly relates to a stable plate heat exchanger and heat exchange equipment. The stable plate heat exchanger comprises a first end plate, a second end plate, a supporting seat, a plurality of plate sheets and a plurality of screw rods, the supporting seat comprises a supporting plate and a guide rail connected with the supporting plate, and the first end plate and the second end plate are installed on the guide rail at intervals; the screw rod is connected with the first end plate and the second end plate, and the plurality of plate sheets are mounted between the first end plate and the second end plate; the stable plate heat exchanger further comprises a pressing assembly, the pressing assembly comprises an elastic piece and an adjusting piece installed on the supporting plate, the two opposite ends of the elastic piece abut against the adjusting piece and the second end plate correspondingly, and the