FIELD: engines and pumps.
SUBSTANCE: set of inventions relates to sucker-rod pump and to method of its application. Proposed pump comprises force transfer element 2, tensioner 3 coupled therewith and uncoupler 10. Note here that force transfer element 2 serves to transfer up-down stroke moment to pump plunger 5 designed for fluid transfer. Tensioner 3 serves to apply expanding force to element 2 to keep it tensioned in up-down stroke. Uncoupler 10 rules out transfer of fluid 12 in down stroke and allows fluid transfer in up stroke. Uncoupler part 16 is coupled with force transfer element 2.
EFFECT: higher reliability and efficiency.
17 cl, 5 dwg
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