PLC control system for hydraulic energy-saving oil pumping unit
A control system and pumping unit technology, applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve the problems of low efficiency, poor balance effect, high device precision requirements, etc., and achieve high efficiency and energy saving effect obvious effect
Inactive Publication Date: 2014-12-03
葛云锋
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Problems solved by technology
However, the device requires high precision, complex processing and high cost
Aiming at the problems of poor balance effect, low efficiency and high energy consumption of conventional beam pumping units
Method used
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Embodiment Construction
[0014] Such as figure 1 As shown, a PLC control system for a hydraulic energy-saving pumping unit described in an embodiment of the present invention includes a hydraulic cylinder 6, a PLC control system 1, a pump station 2, an energy storage tank 3 and a motor 11, wherein the motor 11 is connected to the pump Station 2, the pumping station 2 provides power for the system, and the pumping station 2 is respectively connected with the pressure temperature changer 13 and the energy storage tank 3, and the hydraulic cylinder 6 has a piston 12 inside, and the hydraulic cylinder 6 is connected with the energy storage spring 5 , the oil return solenoid valve 4 and the oil discharge solenoid valve 7, wherein, the displacement regulating valve 8 is connected between the oil discharge solenoid valve 7 and the energy storage tank 3, and the PLC control system 1 is provided with a time relay 9, and the PLC control The system 1 is respectively connected to and controls the motor 11, the oi...
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The invention relates to a PLC control system for a hydraulic energy-saving oil pumping unit. The system includes a hydraulic cylinder, a PLC control system, a pump station, an energy storing tank and a motor. The motor is connected with the pump station. The pump station is connected with the energy storing tank. A piston is arranged in the hydraulic cylinder, and an oil returning electromagnetic valve and an oil outlet electromagnetic valve are connected with the hydraulic cylinder. A discharge capacity regulating valve is arranged between the oil outlet electromagnetic valve and the energy storing tank. A time relay is arranged in the PLC control system. The PLC control system connects and controls the motor, the oil outlet electromagnetic valve, the oil returning electromagnetic valve and the discharge capacity regulating valve. The beneficial effects of the PLC control system are that a stroke time of the piston is controlled through the time relay in the PLC control system and discharge capacity is controlled through the discharge capacity regulating value so that fast moving and slow arrival of the piston are realized and thus stepless adjustment of stroke and stroke times is realized and demands for oil well exploitation are met; and the PLC control system is high in efficiency and obvious in energy-saving effect.
Description
technical field [0001] The invention relates to a PLC control system of a hydraulic energy-saving pumping unit. Background technique [0002] At present, the most commonly used method for oil production in oilfields is to use beam pumping units for oil production, but some defects have been exposed during long-term use. During the operation of conventional beam pumping units, the suspension point bears asymmetrical pulsating loads, resulting in uneven loads on the pumping unit's motor during the up and down strokes, and the efficiency of the motor is low. In order to balance the load of the up and down strokes of the pumping unit, the following four balancing methods are commonly used in oil fields: beam balancing, crank balancing, compound balancing, and pneumatic (hydraulic) balancing. The first three balance methods cannot achieve the best energy-saving effect. Pneumatic (hydraulic) balance reduces the dynamic load and vibration of the pumping unit, and the energy savin...
Claims
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IPC IPC(8): G05B19/05
Inventor 葛云锋
Owner 葛云锋