FIELD: transfer of oil from wells. SUBSTANCE: submersible centrifugal high-pressure pump has electric motor with hydroprotection including protector and compensator, inlet module and sectional pump. Shafts of pump module and protector are articulated by means of splined couplings. Shafts of hydroprotection protector and inlet module are articulated by means of spring coupling. Protector shaft is locked in coupling body by means of fixed cylindrical insert and shaft of inlet module by means of movable cylindrical insert with flexible member made in form of compression spring fitted between them. Movable cylindrical insert is provided with splined outer surface. Such joint makes it possible to create pump at pressure head of 2600 mm with no change in its diameter and material of shaft due to avoidance of twisting of shaft in section where splines are made. EFFECT: enhanced efficiency and reliability. 2 cl, 2 dwg
