Pipe string compensation packer top-proof device

The utility model relates to a pipe string compensation packer top-proof device, which is cylindrical. A pipe string compensator which is composed of an upper connector, a tooth nesting, a compensating outer sleeve, a welding joint, a tooth embedding welding head, a compensating central pipe of a connecting pipe, a pin and a releasing joint is arranged on the middle upper part; an anti-push device of the packer which is composed of a long tile shell body, a slip, a positioning sleeve, a fixing screw nail, a slip conical body, a pin, a central pipe, a limiting joint, a locking ring, an outer jacket of the locking ring, a pin and a leather cup is arranged on the middle lower part; the pipe string compensator and the anti-push device of the packer are connected through screw and are limited by the pin. The upper part of the utility model is connected with an oil pipe string and the lower part is connected with the packer after the packer is sealed; the slip can lock the packer through making use of the inverse buckled function of the releasing joint; the pipe string compensator is dislocated from the anti-push device of the packer through making use of the inverse buckled function of the releasing joint; the pipe string can be in free telescoping following the change of load, achieving that double functions of the compensation of the pipe string and the push resistance of the packer.