| 摘要 |
FIELD: engines and pumps.SUBSTANCE: invention relates to nuclear industry in part of nuclear wastes processing, namely, to devices for more complete discharge of radioactive residue from storage reservoirs, and may be applied in chemical, petrochemical and other industries. A pump comprises a body, an air distributor, comprising valves of compressed air supply, spent air discharge and underpressure supply into a body, a pulse line, an injection pipeline with an outlet ball valve, a control system and an inlet valve. The inlet valve is equipped with a slide valve interacting with the end of a seat made in the form of a pipe and connected by a shaft with a pneumatic cylinder stem. Suction nozzles are connected to bottoms of bodies along the perimeter, at the end of which there are slots that expand inside, and plugs are fixed to the ends. According to one of the versions, the pneumatic cylinder is installed in the service zone and is connected to a control system, electric pneumatic distributors of which that control operation of the underpressure supply valve and the pneumatic cylinder of double-sided action are connected in parallel. According to the second version, the pneumatic cylinder is installed on the pump body, and the upper cavity of the pneumatic cylinder is connected by a pipeline to the pulse line. In the lower cavity of the pneumatic cylinder there is a return spring installed, the force of which is less than the force of the pneumatic cylinder at working pressure and makes at upper and lower positions of the pneumatic cylinder pistons of accordingly 0.4 and 0.6 of the pneumatic cylinder force.EFFECT: development of a device for more complete discharge of radioactive residue from storage reservoirs.6 cl, 3 dwg |
