Results 251 to 260 of about 32,518 (302)
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The design and simulation of beam pumping unit
2015 21st International Conference on Automation and Computing (ICAC), 2015Based on beam pumping unit, an new method of design beam hanger to dynamic loading and simulation in ADAMS software is presented, and beam pumping unit's structure and working principle are introduced in this paper first. Secondly, using the development function of macro command in ADAMS software, combining with the connect method of bushing and ...
Wenlei Sun +3 more
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Indexes of pumps for oil field pumping units
Chemical and Petroleum Engineering, 1994As reported previously, a series of oil field pumping units has been developed with power outputs of 125, 250, 500, and 1000 kW, designed for injecting working fluids in cementing operations in oil and gas wells, hydraulic fracturing of formations, washing out sand plugs, and other production operations.
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High pressure pumps and pump units
2001In this context high pressure cleaning is defined as the use of pressurised water from 250 to 1200 bar, and is often referred to as ‘Hydrodynamic Cleaning’ in view of the fact that it relies on the kinetic energy of the water for cleaning power, as opposed to the use of hot water or chemical additives.
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An energy saving of pumping unit based on the pump dynamometers
2011 International Conference on Electrical and Control Engineering, 2011The mathematical of the multi-level rod pumping system is analyzed. The Algorithm model based on the pump dynamometers and the implementation method based on the microcontroller are proposed. The system controls intelligently the Pumping unit according to the actual work state, and achieves the energy saving purpose. The testing data of the field shows
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2004
The invention relates to a motor-pump unit (1) for a motor vehicle brake system, comprising a motor (4) and a pump (3) which is provided with a shaft (5) that is driven by said motor (4). The end (15) of the shaft is rotatably mounted within a receiving element (2) that comprises at least one bearing (8), valves, and connecting ducts.
CONTINENTAL TEVES AG & CO OHG +5 more
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The invention relates to a motor-pump unit (1) for a motor vehicle brake system, comprising a motor (4) and a pump (3) which is provided with a shaft (5) that is driven by said motor (4). The end (15) of the shaft is rotatably mounted within a receiving element (2) that comprises at least one bearing (8), valves, and connecting ducts.
CONTINENTAL TEVES AG & CO OHG +5 more
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2014
The unit pump system (UPS) is used in commercial vehicles and large engines. The unit pump (UP) works in the same way as the unit injector (UI) for commercial vehicles. In contrast to the UI, however, the nozzle and the injector are kept separate in the UP and connected to each other by a short line.
Ulrich Projahn +9 more
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The unit pump system (UPS) is used in commercial vehicles and large engines. The unit pump (UP) works in the same way as the unit injector (UI) for commercial vehicles. In contrast to the UI, however, the nozzle and the injector are kept separate in the UP and connected to each other by a short line.
Ulrich Projahn +9 more
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Annual Technical Meeting, 1995
Abstract The theory of Long Stroke Pumping Units (LSPU) and the associated benefits have been generally accepted throughout industry for many years. Unfortunately there is usually a stigma associated with theory in that it sometimes differs greatly with actual results.
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Abstract The theory of Long Stroke Pumping Units (LSPU) and the associated benefits have been generally accepted throughout industry for many years. Unfortunately there is usually a stigma associated with theory in that it sometimes differs greatly with actual results.
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2011
The invention relates to a motor-pump unit, in particular for providing pressure for a brake actuating device of a motor vehicle brake system having a pneumatic brake booster, in particular a vacuum brake booster, comprising a pump and an electric motor driving the pump, wherein the pump is provided as a dual diaphragm pump having two opposite working ...
CONTINENTAL TEVES AG & CO OHG +8 more
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The invention relates to a motor-pump unit, in particular for providing pressure for a brake actuating device of a motor vehicle brake system having a pneumatic brake booster, in particular a vacuum brake booster, comprising a pump and an electric motor driving the pump, wherein the pump is provided as a dual diaphragm pump having two opposite working ...
CONTINENTAL TEVES AG & CO OHG +8 more
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Unit Commitment for a Power System with Pumped Storage Units
IFAC Proceedings Volumes, 1997Abstract The spinning reserve constraint presents a significant challenge in smaller power systems.It is common to have the reserve required specified at multiple times following a contingency. In this paper some operating modes of a pumped storage unit designed to provide reserve are described.
Michael P. Walsh, Mark J. O'Malley
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SPE California Regional Meeting, 1970
The success of the sucker-rod system for pumping oil wells is due, primarily, to the pumping oil wells is due, primarily, to the simplicity of the surface, as well as the subsurface equipment. In the early life of the industry the wells were shallow and could be adequately pumped with beam-type surface equipment. As wells were drilled to greater depths
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The success of the sucker-rod system for pumping oil wells is due, primarily, to the pumping oil wells is due, primarily, to the simplicity of the surface, as well as the subsurface equipment. In the early life of the industry the wells were shallow and could be adequately pumped with beam-type surface equipment. As wells were drilled to greater depths
openaire +1 more source