Dual injection system and synchronization control method thereof

A dual injection system, comprising a primary injection system and a secondary injection system, wherein the primary injection system and the secondary injection system each comprise a speed injection oil circuit and a booster oil circuit, wherein

• the speed injection oil circuit of the primary injection system and the speed injection oil circuit of the secondary injection system are arranged independently of each other;
• and the booster oil circuit of the primary injection system and the booster oil circuit of the secondary injection system each comprise an A-bridge valve group and are arranged in coordination with each other:
• the speed injection oil circuit of the primary injection system and the speed injection oil circuit of the secondary injection system each comprise an injection cylinder:
• the booster oil circuit of the primary injection system and the booster oil circuit of the secondary injection system each comprise a booster cylinder, a control valve V04, and a control valve V08:
• the control valve V04 is in communication with the control valve V08 to form a series oil circuit:
• the series oil circuit comprises a first end in communication with a rodless chamber of the injection cylinder and a second end connected to an oil tank;
• and a rod chamber of the booster cylinder is communicated between the control valve V04 and the control valve V08 through a pipe to form the A-bridge valve group;
• and
• the rod chamber of the booster cylinder of the primary injection system is in communication with the rod chamber of the booster cylinder of the secondary injection system through a pipe, and a rodless chamber of the booster cylinder of the primary injection system is in communication with a rodless chamber of the booster cylinder of the secondary injection system through a pipe;
• and booster accumulators are respectively in communication with the booster cylinder of the primary injection system and the booster cylinder of the secondary injection system and are communicated through a gas pipe.