Become and detain connecting device

The utility model provides a become and detain connecting device, become and detain connecting device are used for connecting an oil pipe and the 2nd oil pipe, and wherein the 2nd oil pipe's externaldiameter is greater than the 2nd oil pipe's external diameter, include: the body, body axial through, the body along the axial have back to first end and second end, the outline of body second end isgreater than the outline of the first end of body, is provided with the reducer that first end of connection and second were held on the body, is provided with the recess that is used for supplying the cable to wear to establish on the outer wall of reducer, recess axial through, the first end of body is used for being linked together with an oil pipe, and the second end of body is used for the cover to locate the 2nd oil pipe's outer wall to make the cable extend to on the 2nd oil pipe's the outer wall from the outer wall of body second end, spacing portion, spacing portion sets up on the reducer, and spacing portion