Regulating rod drive of nuclear reactor

A drive of a regulating rod of a nuclear reactor, comprising:

• an electromotor having an output shaft;
• a means for transmitting the torque of said electromotor, kinematically coupled to said output shaft of said electromotor;
• a hermetically sealed housing;
• a connection shaft arranged in said hermetically sealed housing and kinematically coupled to said torque transmitting means;
• a self-braking reduction gear arranged in said hermetically sealed housing and kinematically coupled to said torque transmitting means of said electromotor;
• a bar;
• a mechanism for driving said bar, arranged in said hermetically sealed housing and kinematically coupled to said self-braking reduction gear;
• a casing;
• profiled grips mechanically connected to said bar of said bar driving mechanism;
• a spur-gear drive of said mechanism for driving said bar, kinematically coupled to said self-braking reduction gear;
• a disengaging means of said bar driving mechanism, kinematically coupled to said self-braking reduction gear;
• a casing of said disengaging means;
• a driving element of said disengaging means, arranged in the latter's casing and kinematically coupled to said self-braking reduction gear having an internal cavity;
• a driven element of said disengaging means, arranged in said internal cavity of said driving element and having an internal cavity;
• said bar being arranged in said internal cavity of said driven element;
• a kinematic pair for converting rotative motion into reciprocating motion of said mechanism for driving said bar, arranged in said hermetically sealed housing of said drive;
• a gear of said kinematic pair, connected to said driven element;
• a toothed member of said kinematic pair, the teeth being provided on its outer surface;
• said toothed member being rigidly coupled to said bar and engaged with said gear;
• a jacket housing the upper portion of said toothed member;
• an inductive transducer of the lower position of said regulating rod of said mechanism for driving said bar, mounted on said jacket;
• a mechanism for controlling said profiled grips, arranged in said hermetically sealed housing of said drive and kinematically coupled to said self-braking reduction gear and said bar driving mechanism;
• a rotary tube of said mechanism for controlling said profiled grips, coaxially interposed between said toothed members and said jacket;
• a control pin of said mechanism for controlling said profiled grips, arranged inside said toothed member, one of its ends being rigidly connected to said rotary tube, whereas its other end is connected to said profiled grips to control them;
• a signalling means to signal the engagement of said drive with said regulating rod, arranged in said hermetically sealed housing of said drive and electromagnetically coupled to said bar driving mechanism;
• an armature of said signalling means, interacting with said inductive transducer of the lower position of said regulating rod;
• a spring-loaded sensing rod of said signalling means, whereof one end interacts with said regulating rod;
• a guide tube mounted on said hermetically sealed housing of said drive and interacting with said bar driving mechanism.