Mazda provides multi-orifice lancer desuperheaters. These desuperheaters regulate the amount of injected water by varying the number of orifices during operation. This feature ensures that the spray water pressure remains constant at all loads and an excellent and almost uniform spray quality, which is achieved over the full operating range. Therefore to accumulate in the steam line it minimises the tendency of spray water. Opening of the orifices is regulated by the positioning of a piston operated actuator directly mounted on the desuperheater. Following are some of the advantageous features of these desuperheaters: this compact and simple design ensures no separate spray water injection control valve is required. A high turndown of 50:1 is standard. Higher turndowns can be accommodated on request.
