Pipeline connection device and pipeline adapting assembly

A pipeline adapting assembly, comprising one of a heat exchanger, a flow regulating device, a gas-liquid separator and a compressor, and a pipeline connection device;

• the pipeline connection device, comprising:
• a first connecting member, a second connecting member and a sealing member, the first connecting member and the second connecting member being fixedly connected, the first connecting member comprising a first channel and an abutting portion provided on an outer peripheral side of the first channel, the second connecting member comprising a second channel and a first groove portion provided on an outer peripheral side of the second channel, the first groove portion comprising a first receiving groove and a first side wall adjacent to the second channel;
• the sealing member being received in the first receiving groove, at least part of the abutting portion being received in the first receiving groove and abutting against the sealing element;
• a first gap being provided between the abutting portion and the first side wall, and the first gap is not greater than 0.3 mm;
• wherein the heat exchanger is connected to the pipeline connection device, at least one of an inlet and an outlet of the heat exchanger is in communication with the first channel or the second channel;
• or, the flow regulating device is connected to the pipeline connection device, at least one of an inlet and an outlet of the flow regulating device is in communication with the first channel or the second channel;
• or, the gas-liquid separator is connected to the pipeline connection device, at least one of an inlet and an outlet of the gas-liquid separator is in communication with the first channel or the second channel;
• or, the compressor is connected to the pipeline connection device, at least one of an inlet and an outlet of the compressor is in communication with the first channel or the second channel;
• wherein the first connecting member comprises a second groove portion located on an outer peripheral side of the abutting portion, an outer wall surface of the abutting portion is an inner wall surface of the second groove portion, the second connecting member comprises a second isolation portion located on the outer peripheral side of the first groove portion, an outer wall surface of the first groove portion is an inner wall surface of the second isolation portion, the second groove portion comprises a second receiving groove, and at least part of the second isolation portion is received in the second receiving groove.