Degassing membrane tube module and online gas-in-oil monitoring apparatus for vacuum on-load tap changer (OLTC)

An online gas-in-oil monitoring apparatus,

• comprising an online monitoring housing (1), an oil inlet tube (2), a gas monitoring device (3), and an oil tank (4), wherein a front end of the oil inlet tube (2) is provided with a degassing membrane tube module, so as to perform online preliminary degassing on insulating oil;
• the degassing membrane tube module is provided at a front end of the oil inlet tube (2), comprising an oil inlet (201) and an oil outlet (202) at two ends of the degassing membrane tube module, wherein an oil-gas separation membrane tube (210) and a housing (207) sleeved on the oil-gas separation membrane tube (210) are provided between the oil inlet (201) and the oil outlet (202);
• and a gas inlet (203) and a gas outlet (204) are threadedly connected to an outer wall of the housing (207);
• and
• a cavity enclosed by the oil inlet (201), the oil outlet (202), and the oil-gas separation membrane tube (210) forms an oil chamber (206) where the insulating oil flows;
• and a certain gap is reserved between the oil-gas separation membrane tube (210) and the housing (207) to form a gas chamber (208), such that gases separated from the insulating oil through the oil-gas separation membrane tube (210) are guided out, and exhausted by the gas outlet (204);
• wherein one end of the oil inlet tube (2) extends through an inner wall at one side of the online monitoring housing (1);
• the gas monitoring device (3) is located on a top inner wall of the online monitoring housing (1);
• the oil tank (4) is located in the online monitoring housing (1);
• and an oil diffusing screen (15) is provided at a top of the oil tank (4);
• and
• a support plate (5) is provided in the online monitoring housing (1);
• the support plate (5) is located below the oil tank (4);
• the support plate (5) is fixedly connected to inner walls of the online monitoring housing (1);
• an oil discharge tube (6) is provided at one side of the online monitoring housing (1);
• a support ring (7) is provided above the support plate (5);
• a bottom of the support ring (7) is fixedly connected to two threaded tubes (8);
• a vertical teetering mechanism (340) is provided at bottoms of the threaded tubes (8);
• and the threaded tubes (8) are connected to the oil tank (4) through a horizontal striking component (90).