Power generating lying energy recycling electric hydraulic pressure energy-saving balance beam type pumping machine

A beam pumping unit, electro-hydraulic technology, applied in the direction of mechanical equipment, mining fluid, wellbore/well components, etc., can solve the problems affecting the normal operation of the pumping unit, self-consumption of equipment, etc., to save electric energy, The effect of improving the working life

Inactive Publication Date: 2008-01-23
BEIJING JIAJIE LIANZHONG ENERGY SAVING TECHCO
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Problems solved by technology

In Chinese Patent No. ZL94202553.9, it is described that the variable pump-motor drive is used in the hydraulic pumping unit to solve the problem of balance a

Method used

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  • Power generating lying energy recycling electric hydraulic pressure energy-saving balance beam type pumping machine
  • Power generating lying energy recycling electric hydraulic pressure energy-saving balance beam type pumping machine
  • Power generating lying energy recycling electric hydraulic pressure energy-saving balance beam type pumping machine

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Example Embodiment

[0055] The present invention will be explained in more detail below in conjunction with preferred embodiments.

[0056] Referring to Fig. 1, the electro-hydraulic energy-saving walking beam pumping unit of the present invention for reusing the energy in the power generation state includes a frame 1, a driving motor 2, a walking beam 3, a polished rod 4, a front donkey head 5, and an auxiliary hydraulic energy regeneration device. Among them, a photoelectric position sensor (WZ) is installed on the walking beam 3 to detect changes in the position of the walking beam. The auxiliary hydraulic energy regeneration device is composed of two parts: an electronic control unit 6 and a hydraulic system. The hydraulic system mainly includes auxiliary support truss 7, movable contact mechanism, hydraulic pump 8, hydraulic cylinder 9, accumulator 10, hydraulic integrated block 11, hydraulic auxiliary oil tank 12, hydraulic pipeline, accumulator bracket 13, and initialization motor 39 . The mov...

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Abstract

An electro-hydraulic energy-saving beam type oil pump for reusing the energy under the condition of power generation is provided, which comprises a frame, a drive, a beam, a polish rod, a pre-drive head and an auxiliary hydraulic energy regenerator comprising a hydraulic system and an electric control unit. The hydraulic system comprises an auxiliary supporting truss, a hydraulic pump, a hydraulic cylinder, an accumulator, a hydraulic integration block, an auxiliary hydraulic oil tank and a movably contacting mechanism that is located on the beam and transmits the displacement of the beam to the piston rod of the hydraulic cylinder; the movably contacting mechanism is connected respectively with the piston rod and the auxiliary supporting truss; on the platform of the auxiliary supporting truss, the hydraulic cylinder and the accumulator are arranged parallelly; the hydraulic cylinder is connected with the accumulator through the hydraulic integration block; the base of the auxiliary supporting truss is connected with the hydraulic pump, which is respectively connected with the auxiliary oil tank and the hydraulic integration block. For the invention, the drive motor of the oil pump can be standby in a negative-power area and can recycle and reuse the residual energy of the negative power, so as to save power and energy without changing the structure and operation principle of the former beam type oil pump.

Description

technical field [0001] The invention relates to a beam pumping unit, in particular to an electro-hydraulic energy-saving beam pumping unit in which energy in a power generation state is reused. Background technique [0002] The beam pumping unit is currently a commonly used model in my country's oilfields. Due to the fluctuation of its load, the driven motor often works in a light-load state, and most of the motors still have the phenomenon of reverse power generation. low efficiency. The article "Development and Application of Intermittent Power Supply Device for Beam Pumping Units" (Petroleum Machinery, Volume 34, No. 5, 2006) describes the intermittent method of the motor of the pumping unit, but does not recover the intermittent mechanical residual energy . "The Design Principle of Power Recovery Type Hydraulic Pumping Unit" (Petroleum Machinery, Volume 23, No. 2, 1995) proposed the concept of power recovery, but it was limited to the beamless pumping unit. In Chinese ...

Claims

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Application Information

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IPC IPC(8): E21B43/00F16H33/00
Inventor 郭衡许铁民朱小林韩聚奎
Owner BEIJING JIAJIE LIANZHONG ENERGY SAVING TECHCO
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