Novel heat preservation well head device

The utility model discloses a novel heat preservation well head device, include water pipe always, always install total feed valve on the water pipe, always the well -flushing valve is installed to the exit end of water pipe, the well -flushing valve other end and connecting pipe intercommunication, install level pressure gassing stop valve on the connecting pipe, the one end intercommunication of connecting pipe has back oil pipe, the other end intercommunication of connecting pipe has the sleeve pipe, the nestification has sleeve pipe heat preservation short circuit in the sleeve pipe, sleeve pipe heat preservation short circuit and always install the single current stop valve on the pipeline between the water pipe, sleeve pipe heat preservation short circuit intercommunication has the nozzle stub, the other end intercommunication of nozzle stub has oil pipe heat preservation short circuit, oil pipe heat preservation short circuit nestification is in oil pipe, the last sample valve that has connect of oil p