Special pressure regulating device for BOG (Boil Off Gas) recycling machine of screw compressor

• Main Authors: QU LAISHENG, XU XIBO
• Format: Patent
• Language: Chinese; English
• Published: 03.11.2023
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PIPE-LINE SYSTEMS; PIPE-LINES; STORING OF DISTRIBUTING GASES OR LIQUIDS; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The utility model discloses a special pressure regulating device for a BOG (Boil Off Gas) recycling machine of a screw compressor. The special pressure regulating device comprises a main pressure regulating valve, an upper gas path and a lower gas path, the main pressure regulating valve comprises a valve body, a valve cover, a piston, an air inlet and an air outlet; a sealing ring is arranged between the valve cover and the valve body; a movable body and a fixed body are sequentially arranged below the valve cover; from top to bottom, the piston firstly penetrates through the valve cover and is in sealed connection with the valve cover, then is fixedly connected with the moving body, and finally penetrates through the fixed body and is movably connected with the fixed body; a movable valve is arranged at the movable joint of the fixed body and the piston; an upper cavity is formed between the valve cover and the moving body, a middle cavity is formed between the moving body and the fixed body, and a lower ca