摘要:
Pump designs are detailed. A pump may include a fan having one or more pass-through holes allowing ambient air to be drawn through a fan near a motor shaft bearing for cooling purposes. Alternatively or additionally, a pump may include modular stages to facilitate servicing and repair.
摘要:
Die Erfindung betrifft ein Wellendichtungssystem (2) für ein einen ölgefüllten Raum (14) aufweisendes Lagergehäuse (9, 10) einer Pumpenanordnung (1), mit einem Verschlusselement (17, 117), wobei das Verschlusselement (17, 117) eine Ausnehmung (25, 125) zur Durchführung einer Welle (4) mit einer Mittellängsachse (A) aufweist und das Verschlusselement (17, 117) mehrteilig aufgebaut ist, ferner mit einer Labyrinthdichtungsbuchse (44), einer drehfest mit der Welle (4) verbundenen Wellen- schutzhülse (57) und einer Schleuderscheibe (62), die an der Wellenschutzhülse (57) in einer wenigstens von dem Verschlusselement (17, 117) und der Labyrinthdichtungsbuchse (44) begrenzten Kammer (56) angeordnet ist. Darüber hinaus betrifft die Erfindung eine Pumpenanordnung (1) mit einem derartigen Wellendichtungssystem.
摘要:
A centrifugal pump and an impeller thereof are provided. The impeller defines an outer peripheral edge which includes a plurality of serrations circumferentially thereon. The plurality of serrations are configured such that additional power and momentum are transferred to a working fluid of the pump, which results in an additional pressure rise in the working fluid at relatively low flow rates of the centrifugal pump.
摘要:
A compressor free, generator free system production well for accelerated oil and gas removal from a reservoir using a magnetically coupled expander pump assembly, which include an outer expansion turbine that rotates around a pump. A magnetic coupling couples the expansion turbine to the pump. An inner portion of the magnetic coupling can be coupled to a pump shaft that drives the pump. An outer portion of the magnetic coupling can be driven by the expansion turbine, which rotates circumferentially around the pump. The expansion turbine drives the fluid to pump a driven fluid stream through the magnetic coupling. In this manner, flow directions of both driving and driven fluid streams remain separate and coaxial, thereby facilitating a reduction in an overall diameter of the expander pump assembly.
摘要:
A centrifugal pump (1) comprises an outer case (2); an inner case (3); a first unit (4) and a second unit (5) placed in fluid communication with each other, each unit (4, 5) comprising a plurality of impellers (6, 6a, 6b); the inner case (3) comprises two half-parts (3a) joined along a connection plane containing the axis of rotation (A); a connecting element (7) is placed between the first unit (4) and the second unit (5), the connecting element (7) is engaged with a last impeller (6a) of the first unit (4) and with a last impeller (6b) of the second unit (5).
摘要:
A horizontal pumping system for pumping fluids into downstream piping includes a motor and a pump driven by the motor. The pump includes a discharge assembly for use in connecting a pump within a horizontal pumping system to downstream piping. The discharge assembly preferably includes a discharge head and a stub end configured for sliding engagement with the discharge head. The stub end is captured within the discharge head in a hydraulically balanced condition and the discharge assembly further includes a hydraulic balance chamber and a runner plate within the hydraulic balance chamber. The runner plate is secured to the stub end.
摘要:
Die Erfindung betrifft eine Kreiselpumpe mit einem Laufrad (1). Dem Laufrad (1) ist eine Leiteinrichtung (4) nachgeordnet. Die Leiteinrichtung (4) umfasst Schaufeln, zwischen denen Leitkanäle (8) gebildet werden. Erfindungsgemäß sind am Austritt zumindest eines Teils der Leitkanäle (8) Führungselemente (9) angeordnet.
摘要:
A fluid pump having at least two pump heads in series permits pumping fluid at both high pressure and high volumetric rate. Each pump head has at least two fluid conduits in fluid communication with a housing, the housing containing an impeller for drawing fluid through an inlet in the housing and moving the fluid through the fluid conduits. The at least two fluid conduits of one pump head combine fluid flow at the inlet of a neighboring pump head to provide a single flow of fluid through the inlet into the neighboring pump head. A drive structure passing through the inlets between two pump heads is configured to commonly drive the impellers in the housing of each pump head.
摘要:
Methods and systems for pumping a production fluid from a production zone to a collection point are disclosed. The methods include disposing a tubing in the production zone of a wellbore, pumping the production fluid from the production zone through a first stage of a pump system (100) to achieve an inter-stage pressure sufficient for entry into a second stage, and pumping the production fluid at the inter-stage pressure through a second stage of the pumping system (100) to achieve a lifting pressure sufficient to lift the production fluid to a collection point, wherein the second stage includes a jet pump assembly (200). The methods and systems can reduce the influence of free gas, sand and abrasive solid on the pump system.
摘要:
A technique employs a system and methodology for improving sand control in pumps. The technique may be used in centrifugal pumps by providing uniquely constructed rib feature to facilitate sand control and thus reduction of erosion due to sand in the pumped fluid. The improved sand control is useful in centrifugal pumps employed in a variety of oilfield applications, such as in electric submersible pumping systems positioned downhole in a wellbore to pump oil or other fluids. The rib feature may be used in combination with a shield and arranged along diffuser bowl walls or other diffuser walls within sequential pump stages.