Vacuum degree detection device, monitoring system, and vacuum arc extinguishing chamber thereof

A vacuum degree detection device of a vacuum arc-extinguishing chamber, comprising;

• a ceramic insulating housing sealingly fixed to an end face cover plate of the vacuum arc-extinguishing chamber, the ceramic insulating housing being a circular ring-shaped structure coaxial with a conductive rod on the end face cover plate, a sealing area formed by the end face cover plate and the ceramic insulating housing being provided with a through hole communicating with the vacuum arc-extinguishing chamber;
• a thermoelectric vacuum sensor disposed inside the ceramic insulating housing to detect the vacuum degree of the vacuum arc-extinguishing chamber, the thermoelectric vacuum sensor comprising;
• a cold end fixed to the end face cover plate through which heat is transferred with the conductive rod;
• an electrode supported on the cold end;
• a thermoelectric arm supported on the electrode;
• a hot end laminated on the thermoelectric arm;
• a thermal resistance block laminated on the hot end;
• and
• a heating device laminated on the thermal resistance block.