A cooling shield (1) for a liquor injection pipe of a liquor gun for supplying liquor to a combustion chamber (34) of a recovery boiler. The cooling shield (1) has a first and a second side edge (3,4), the side edges extending in a longitudinal direction (L) of the cooling shield (1), and a first end edge (5) and a second end edge (6) extending between the side edges (3,4), the cooling shield (1) comprising an outside shield wall (11), and an inside shield wall (12), the outside shield wall (11) and the inside shield wall (12) being connected along the side edges (3,4) of the cooling shield (1), the cooling shield (1) comprising a cooling medium space (15) being arranged between the outside shield wall (11) and the inside shield wall (12), and a cooling medium inlet (16', 16'') and a cooling medium outlet (17) being arranged in the cooling shield (1) in communication with the cooling medium space (15). A liquor gun system (100) comprising the cooling shield (1) and a liquor gun (30) and a method are also disclosed.
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