Convenient connection device

The utility model discloses a convenient connection device. An adaption connector, a rapid connector and a ventilation pipe connector are arranged so as to realize connection between an equipment switch inflation inlet and a ventilation pipe of a measurement instrument, the structure is simple, and the operation is convenient. During actual site working, a matched adaption connector is arranged according to the reference of the equipment switch inflation inlet, a connector body is connected to the adaption connector, when different equipment is detected, a connector column body can be inserted into different equipment switch inflation inlets directly for measurement, various kinds of combined connectors are not required to be matched for connection between the equipment switch inflation inlet and the ventilation pipe of the measurement instrument, and the device is convenient and practical. The sealing performance of the convenient connection device is excellent, gas is ensured not to leak, matching between the equipment switch inflation inlet and the rapid connector is realized by the aid of the adaption connector, SF6 gas can be conveyed to the measurement instrument safely by the aid of the connection pipe and the ventilation pipe connector, dissipation is avoided, and the data accuracy is improved.