Hole-throat type drilling fluid pulse generator for measuring instrument while drilling

The invention discloses a hole-throat type drilling fluid pulse generator for a measuring instrument while drilling, which mainly comprises a control valve nipple and a main pulse device, wherein thecontrol valve nipple and the main pulse device are in a threaded connection through a drilling tool joint. A water hole is arranged at the central axis of the pulse generator body, which penetrates through the whole pulse generator body, the control valve nipple uses the nipple body as a control valve body to provide a pressure control signal for a hydraulic system in the main pulse device, and the main pulse device pushes the throat valve to generate action by utilizing the internal hydraulic system so as to send out a drilling fluid positive pressure pulse. The hole-throat type drilling fluid pulse generator for the measuring instrument while drilling has the characteristics of compact structure, simple and convenient installation, fewer easy-to-wear parts and no easy blockage, and has the main function that an