Liquid accumulator and heat exchange system having liquid accumulator

A liquid accumulator, comprising a barrel body, wherein the barrel body comprises an inlet end disposed at one end of the barrel body and an outlet end disposed at the other end of the barrel body,

• wherein the liquid accumulator further comprises a one-way valve disposed in the barrel body, and the one-way valve comprises a valve seat and a valve plate,
• the valve seat is provided with a valve port, a side of the valve seat towards the outlet end is provided with the valve plate, the valve port is covered by the valve plate, and
• a protrusion is located surrounding the valve port and the valve plate is capable of moving towards or away from the valve port, so as to open or close the one-way valve.