| 摘要 |
FIELD: oil-and-gas industry. ^ SUBSTANCE: group of inventions relates to oil-producing industry and can be used for metered flow of liquid reactants into oil well. Method includes pumping-over of liquid by fluid-power circuit by pump from the tank through the hydrodistributor and adjustment unit of pumped-over liquid by command from control block into dosing tank, corresponding hydraulic ram with piston. Liquid is pumped-over by closed circulation by fluid-power circuit according to the scheme: tank with working fluid-pump- hydraulic ram -tank. In the capacity of working fluid it is used liquid technical oil. Before feeding of working fluid into valve actuator it is passed through the adjustment unit of working fluid feeding. It is used piston of double action. Feeding of dose liquid chemical reactant is implemented by fluid-power circuit into under- piston chambers of hydraulic ram alternately. ^ EFFECT: reliability enhancement of operation, design simplification, providing of process automation. ^ 2 cl, 1 dwg |
