Grease bundt pan with cooking spray. Mix first three ingredients and set aside. Mix together additional sugar, vegetable oil, and eggs. Add flour and baking powder to mixture. Add salt, vanilla, and orange juice in batter and beat well. Spread 1/3 of batter into the bottom of the pan. Top with 1/2 of blueberry mixture, forming a ring around the center of the pan. Repeat, ending with the batter. Bake at 350 degrees or until a toothpick inserted in the center comes out clean, about 1 hour. Cool slightly. Remove cake from pan. Mix confectioners' sugar and butter to make icing and drizzle on cake.