Hydraulic pumping device with energy recovery function
An energy recovery and oil pumping technology, which is applied to fluid pressure actuation devices, fluid pressure actuation system components, and mining fluids, etc., can solve problems such as energy waste of hydraulic pumping units, and achieve the effects of reducing energy consumption and simplifying manufacturing
Inactive Publication Date: 2013-11-20
ZHEJIANG OCEAN UNIV
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Problems solved by technology
[0004] The problem to be solved by the present invention is that the energy waste of existing hydraulic pumping units is relatively serious.
Method used
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[0012] like figure 1 As shown, taking the current general-purpose hydraulic pumping unit with a load of 30 tons as an example, its power is 18.5KW, and the diameter of the oil cylinder is 125mm. Lifting hydraulic cylinder 5, energy storage cylinder 6, electromagnetic control valve 7, energy accumulator 8, energy storage control valve 9, hydraulic power system 10, the pulley block device 4 is connected with the oil pumping device 1 and the hanger 2 through the wire rope 3 There are energy storage cylinders 6 connected in parallel on both sides of the lifting hydraulic cylinder 5, and the hydraulic telescopic rods of the lifting hydraulic cylinder 5 and the energy storage cylinder 6 are jointly connected with the pulley block device 4; the oil supply pipeline of the lifting hydraulic cylinder 5 is connected in parallel with an electromagnetic control valve 7 And the check valve, the other end of the electromagnetic control valve 7 is connected with the fuel tank, the other end o...
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The invention relates to a hydraulic pumping device with an energy recovery function. The device consists of a pumping device, a hanger, a steel wire rope, a pulley group device, a lifting hydraulic cylinder, energy storage cylinders, an electromagnetic control valve, an energy storage device, an energy storage control valve and a hydraulic power system, wherein the energy storage cylinders are connected in parallel on the two sides of the lifting hydraulic cylinder; the hydraulic telescopic rods of the lifting hydraulic cylinder and the energy storage cylinders are jointly connected with the pulley group device; a one-way valve control pipeline connected with the hydraulic power system is arranged between the energy storage control valve and a speed regulating valve; when a pumping rod arrives at a highest position, due to the self-weight of the pumping device and the hanger, hydraulic oil in the lifting hydraulic cylinder directly flows back to an oil tank through the electromagnetic control valve, and the hydraulic oil of the energy storage cylinders flows to the energy storage device for energy storage through the energy storage control valve; and the total oil pressure action area of the energy storage cylinders on the two sides are smaller than the oil pressure action area of the lifting hydraulic cylinder, so the three hydraulic cylinders start ascending again to save a large amount of energy.
Description
technical field [0001] The invention relates to a hydraulic pumping device with energy storage and recovery functions, which mainly utilizes an energy storage cylinder to store energy when a pumping unit is lowered to lower a sucker rod, and is used for lifting the sucker rod, belonging to the field of petroleum machinery. Background technique [0002] The important equipment for oil extraction is the pumping unit. The total number of pumping units in my country is more than 100,000, and the annual power consumption reaches 10 billion kWh, accounting for about 40% of the total power consumption of petroleum industry enterprises. At present, the most widely used pumping unit is the conventional beam pumping unit. Its disadvantages are low operating efficiency and large waste of electric energy. For oil companies, saving power consumption can directly reduce the cost of oil extraction, so a hydraulic oil pumping device with energy storage function is proposed. Contents of t...
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IPC IPC(8): E21B43/00F15B21/14
Inventor 张兆德李德堂张吉萍张丽瑛黄萍白兴兰程振兴陈飞
Owner ZHEJIANG OCEAN UNIV