Sorry, how exactly is raising 3x small ????

I could c/shove but who exactly am I expecting to bet if I check?
Starting to like the idea a little better since if it does check around I allow myself to get more value on the river if it bricks off whereas I just see zero value in shoving the turn. Why do you guys think a combo draw is going to call it off on the turn but not shove the flop? That's a super inconsistent line of thought.