Direct-acting type pressure regulator for compensating for spring effect

The invention relates to a direct-acting type pressure regulator for compensating for a spring effect. The direct-acting type pressure regulator comprises a main valve body and a drive assembly, the main valve body is installed at the lower end of the drive assembly, a valve seat, a valve disc, a valve rod, a valve rod sleeve and a balance diaphragm are assembled inside the main valve body, the drive assembly comprises an upper diaphragm shell, a lower diaphragm shell, a diaphragm and a tray, the outer peripheral wall of the tray and the inner peripheral wall of the lower half part of the upper diaphragm shell form an annular installation cavity with a V-shaped cross section, the diaphragm upwards forms an annular protrusion with the omega-shaped cross section in the annular installation cavity upward, the lower diaphragm shell is connected with a signal pipe, and the signal pipe is used for communicating with a pipe connected to an outlet end of the main valve body. According to the direct-acting type pressu