Czasopismo | PRZEGLĄD ELEKTROTECHNICZNY | Rocznik 2016 - zeszyt 12

Study of stationary modes of sucker rod pumping unit operation

10.15199/48.2016.12.65

Andriy MALYAR

nr katalogowy: 102649
10.15199/48.2016.12.65

In the article an algorithm for calculating periodic dependencies of electrical and mechanical coordinates in the stationary operation modes of the asynchronous drive of the deep-well oil pumping unit by solving a boundary problem is proposed. Thereat, dependencies of moment of inertia and load moment of the unit on crank rotation angle as well as saturation of the magnetic path and current displacement in the bars of the driving motor rotor are taken into consideration. Streszczenie. W artykule przedstawiono algorytm do obliczania zależności okresowych elektrycznych I mechanicznych w asynchronicznym napędzie jednostki pompującej. Określono zależność momentu bezwładności i obciążenia od kąta dzwigu oraz nasycenie ścieżki magnetycznej. Studium pracy stacjonarnej pompy żerdziowej Keywords: oil pumping unit, stationary modes, asynchronous motor, boundary problem. Słowa kluczowe: pompa olejowa, silnik asynchroniczny, pompa żerdziowa Introduction Oil is produced from oil wells either due to natural flow driven by reservoir energy or by using one of the mechanical methods of lifting liquids. One of the common mechanical methods uses sucker rod pumping unit (SRPU) [1]. SRPU (Fig. 1) consists of a single-acting deep well plunger pump (1), the plunger (2) of which makes reciprocating motion; string of pipes connected by threaded collar joints (3), along which liquid is lifted to the surface; string of sucker rods (4) which are connected to the plunger in the lower part and via the polished rod (5) to the horse head (6) in the upper part. Since the horse head moves along an arch, and the string of sucker rods is supposed to move vertically, it is connected to the polished rod by suspending the sucker rods. The jack pump with the help of the walking beam (7) and the crank (8) transforms rotating motion of the gear reducer crank shaft into reciprocating motion of the string of sucker rods and the plunger of the deep-well pump, which results[...]

Bibliografia

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