Oversize straight pipe pressure balance type compensator

The invention discloses an oversize straight pipe pressure balance type compensator, and relates to the technical field of pipeline compensators. Comprising an inlet connecting pipe assembly; an outlet adapter assembly; the two working corrugated pipes are connected to the inlet end of the corresponding inlet connecting pipe assembly and the outlet end of the corresponding outlet connecting pipe assembly in a sealed and sleeved mode respectively. The two ends of the connecting corrugated pipe are connected with the corresponding working corrugated pipes respectively; the connecting corrugated pipe is sleeved with the balance corrugated pipe, and annular plates at the two ends of the balance corrugated pipe are connected with the corresponding annular plates of the working corrugated pipe through connecting rods; the pressure sensing regulating valve is arranged on the side wall of the connecting corrugated pipe and is used for communicating a cavity between the balancing corrugated pipe and the connecting cor