Bulk specialty gas supply systems

The utility model relates to a bulk special gas supply system. The system comprises a gas delivery pipeline system and a control platform, wherein signal collecting devices such as a gas detector, a pressure sensor, an excess flow switch, a test end port and the like and various pneumatic actuating equipment are arranged in the gas delivery pipeline system, and are respectively connected with a PLC center controller signal input and output end of the control platform through a network wire. The bulk special gas supply system is characterized in that the gas delivery pipeline system comprises four main functional modules of a gas storage device, a bottle head interface box, a depth purging box and a main supply cabinet. The bulk special gas supply system adopts high capacity storage devices, has low cost, and better guarantees that gas products can not be polluted in transportation and the system can work safely.