The present invention discloses a rope winder, which is used for salvaging or hoisting a petroleum instrument via a rope; the rope winder comprises: a rack, and a winding drum set on the rack for releasing and retracting a rope; a first turning wheel, which is set on the rack and is located on a rope releasing and retracting line of the winding drum, wherein the wheel rim of the first turning wheel has a first groove, which fits the rope to rotate synchronously as driven by the rope; an electronic counter, which is connected with the first turning wheel, for obtaining the number of revolutions of the first turning wheel; a calculating unit, for calculating the release distance and release speed of the rope according to the number of revolutions of the first turning wheel; a speed regulating unit, for regulating the rotating speed of the winding drum to regulate the release speed; and a first control unit, for controlling the speed regulating unit to regulate the release speed to a preset safe speed when the release distance is greater than or equal to a set safe distance. The invention further discloses a petroleum instrument salvaging system and a petroleum instrument hoisting system. By employing the above solutions, the current problem of impact and damage caused by too fast rope release during the salvaging or hoisting of a petroleum instrument can be solved.


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    Title :

    ROPE WINDER, PETROLEUM INSTRUMENT SALVAGING SYSTEM AND PETROLEUM INSTRUMENT HOISTING SYSTEM


    Contributors:
    YANG BIAO (author)

    Publication date :

    2016-04-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66D Haspeln , CAPSTANS / E21B EARTH OR ROCK DRILLING , Erd- oder Gesteinsbohren




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