Submersible heating cable packer penetrating device

The utility model relates to a penetrating device for a submersible heating cable packer, which is characterized in that one end of a packer plug is connected with the packer, and the other end of the packer plug is provided with a groove for placing a sealing component and is connected with a sheath through threads; a deep hole is formed in the variable-diameter large end of the sheath, and a teflon sealing gasket, a pressing sleeve and a split locking ring are sequentially arranged in the deep hole; the sheath is in threaded connection with the sheath plug; the heating cable without the steel sheath is connected with the cable connector in a crimping mode, and the heating cable is connected with the fastening cable connector in a crimping mode. The fastening cable connector and the butt joint copper pipe after crimping are connected through a fastening screw; deep holes are formed in the two ends of the butt joint copper pipe respectively, grooves are formed in the deep holes, and crown springs are placed i