CN101592026A - A kind of novel energy-conserving hydraulic pumping unit - Google Patents

A kind of novel energy-conserving hydraulic pumping unit Download PDF

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Publication number
CN101592026A
CN101592026A CNA2009100597257A CN200910059725A CN101592026A CN 101592026 A CN101592026 A CN 101592026A CN A2009100597257 A CNA2009100597257 A CN A2009100597257A CN 200910059725 A CN200910059725 A CN 200910059725A CN 101592026 A CN101592026 A CN 101592026A
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CN
China
Prior art keywords
accumulator
hydraulic
energy
pumping unit
valve
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2009100597257A
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Chinese (zh)
Inventor
姚进
高伟
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Sichuan University
Original Assignee
Sichuan University
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Publication date
Application filed by Sichuan University filed Critical Sichuan University
Priority to CNA2009100597257A priority Critical patent/CN101592026A/en
Publication of CN101592026A publication Critical patent/CN101592026A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to a kind of novel energy-conserving hydraulic pumping unit, comprise parts such as hydraulic pump 1, overflow valve 2, overflow valve 3, one way valve 4, accumulator 5, electro-hydraulic reversing valve 6, composite cylinder 7, piston rod 8, fuel tank 9, pulley 10, rope 11, sucker rod 12 and motor 13.The present invention adopts fluid power system and accumulator balance sysmte, when down stroke, utilize accumulator 5 can collect the gravitional force that sucker rod 12 systems discharge and the energy of store electricity motivation 13, when up stroke, discharge, can effectively reduce the installed power and the fluctuation of speed that reduces motor of motor, reach energy-saving effect.And have that conventional hydraulic pumping unit lifting force is big, in light weight, advantage such as length of stroke and jig frequency are easy to adjust.

Description

A kind of novel energy-conserving hydraulic pumping unit
Technical field
The present invention relates to a kind of novel energy-conserving hydraulic pumping unit, this machine belongs to oil field equipment.
Background technology
Simple in structure, easy manufacturing that conventional beam-pumping unit has, reliability height, good endurance, easy to maintenance, adapt to advantage such as field working conditions, in oil recovery machiner, occupy critical role.But because the architectural feature of conventional beam-pumping unit itself, it is poor to have determined that it has a counterbalance effect, and the clean torque ripple of crank axle is big, has shortcomings such as negative torque, inefficiency and energy consumption are big.In addition, stroke, jig frequency all can not be regulated continuously, are difficult for realizing automation control oil recovery.Hydraulic pumping unit have compact conformation, in light weight, realize advantages such as long stroke, low jig frequency and heavy load easily, thereby development is rapidly.But present hydraulic pumping unit, no matter be to adopt counterweigh or gas balance, counterbalance effect is all undesirable, sucker rod system gravitional force reclaims limitedly when causing down stroke, and can't effectively be utilized the energy of motor.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic pumping unit that has fluid power system and accumulator balance sysmte, the gravitional force that collection sucker rod system discharges when down stroke and the energy of store electricity motivation, when up stroke, discharge, can effectively reduce the installed power and the fluctuation that reduces motor speed of motor, reach energy-saving effect.And have that conventional hydraulic pumping unit lifting force is big, in light weight, advantage such as length of stroke and jig frequency are easy to adjust.
Basic structure of the present invention as shown in Figure 1,1 hydraulic pump, 2 overflow valves, 3 overflow valves, 4 one way valves, 5 accumulators, 6 electro-hydraulic reversing valves, 7 composite cylinders, 8 piston rods, 9 fuel tanks, 10 pulleys, 11 ropes, 12 sucker rods and 13 motor etc. among the figure.
Description of drawings
Fig. 1 is a basic block diagram of the present invention.
The specific embodiment
Specify embodiment of the present invention below in conjunction with accompanying drawing.
Fig. 1 is a basic block diagram of the present invention, and as seen from the figure, composite cylinder 7 is made up of the tandem hydraulic cylinder, forms four oil pocket Q1, Q2, Q3 and Q4.Q2, Q3 chamber link to each other with two hydraulic fluid ports of electro-hydraulic reversing valve 6 respectively, and the Q1 chamber links to each other with accumulator.The Q4 chamber links to each other with fuel tank 9.By the commutation of electro-hydraulic reversing valve 6, Q2, Q3 chamber replace fuel feeding and oil return.Overflow valve 3 plays the safeguard protection effect, this opening of valves overflow when system overload.When one way valve 4 left side pressure during greater than the right pressure, hydraulic pump 1 can be by one way valve 4 to Q1 chamber and accumulator 5 loop fuel feeding.The maximum pressure in overflow valve 2 control Q1 chambeies and accumulator 5 loops.Composite cylinder 7 is with accumulator 5, the gravitional force that collection sucker rod 12 systems discharge when down stroke and the energy of store electricity motivation 13, when up stroke, discharge, can effectively reduce the installed power and the fluctuation that reduces motor speed of motor, reach energy-saving effect.
The operating principle of system is as follows: when moving first, electro-hydraulic reversing valve 6 switches to right position, and hydraulic pump 1 is to Q2 chamber fuel feeding, the oil return of Q3 chamber, at this moment, realize the down stroke operation at Q2 chamber oil pressure and the gravitational load F of sucker rod system effect lower piston rod 8 up drive sucker rods 12.Fluid in the Q1 chamber is squeezed in the accumulator 5 simultaneously, and the gas in the accumulator 5 is compressed and has stored energy, and Q1 chamber and accumulator 5 loops are in high pressure conditions, and one way valve 4 is closed.
When sucker rod 12 came downwards to the stroke end, electro-hydraulic reversing valve 6 switched to position, a left side.Hydraulic pump is to Q3 chamber fuel feeding, the oil return of Q2 chamber, and accumulator 5 discharges the energy that reclaimed last time to the Q1 chamber simultaneously, and the oil pressure active force in the Q3 chamber makes piston rod 8 descending, drives sucker rod 12 and realizes the up stroke operations.
When sucker rod went upward to the stroke end, electro-hydraulic reversing valve 6 switched to right position, the next circulation of beginning.So just can realize the continuous reciprocating motion of sucker rod stroke about in the of 12, thereby can drive the operation that oil well pump is realized pumping crude oil.When electro-hydraulic reversing valve 6 was in the meta function, sucker rod 12 stopped at an arbitrary position.The parameter that changes the stroke end sensor is with regard to adjustable stroke length, and regulated variable hydraulic pressure pump delivery just can be regulated jig frequency.

Claims (3)

1. a novel energy-conserving hydraulic pumping unit comprises parts such as hydraulic pump 1, overflow valve 2, overflow valve 3, one way valve 4, accumulator 5, electro-hydraulic reversing valve 6, composite cylinder 7, piston rod 8, fuel tank 9, pulley 10, rope 11, sucker rod 12 and motor 13.
2. novel energy-conserving hydraulic pumping unit as claimed in claim 1, it is characterized in that: composite cylinder 7 is made up of the tandem hydraulic cylinder, form four oil pocket Q1, Q2, Q3 and Q4, wherein the Q1 chamber links to each other with accumulator 5, Q2, Q3 chamber link to each other with two hydraulic fluid ports of electro-hydraulic reversing valve 6 respectively, and the Q4 chamber links to each other with fuel tank 9; By the commutation of electro-hydraulic reversing valve 6, Q2, Q3 chamber replace fuel feeding and oil return, and overflow valve 3 plays the safeguard protection effect, this opening of valves overflow when system overload; When one way valve 4 left side pressure during greater than the right pressure, hydraulic pump 1 can be by one way valve 4 to Q1 chamber and accumulator 5 loop fuel feeding, the maximum pressure in overflow valve 2 control Q1 chambeies and accumulator 5 loops.
3. novel energy-conserving hydraulic pumping unit as claimed in claim 1, the gravitional force that accumulator 5 collection sucker rods 12 systems discharge when sucker rod 12 down strokes and the energy of store electricity motivation 13, accumulator 5 gives off energy when sucker rod 12 up strokes, can effectively reduce the installed power and the fluctuation that reduces motor speed of motor, reach energy-saving effect.
CNA2009100597257A 2009-06-23 2009-06-23 A kind of novel energy-conserving hydraulic pumping unit Pending CN101592026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2009100597257A CN101592026A (en) 2009-06-23 2009-06-23 A kind of novel energy-conserving hydraulic pumping unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2009100597257A CN101592026A (en) 2009-06-23 2009-06-23 A kind of novel energy-conserving hydraulic pumping unit

Publications (1)

Publication Number Publication Date
CN101592026A true CN101592026A (en) 2009-12-02

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Family Applications (1)

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CNA2009100597257A Pending CN101592026A (en) 2009-06-23 2009-06-23 A kind of novel energy-conserving hydraulic pumping unit

Country Status (1)

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CN (1) CN101592026A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101913349A (en) * 2010-08-19 2010-12-15 肖华军 Mechanical oil-pressure energy storage driver
CN102155188A (en) * 2011-04-01 2011-08-17 孙茂意 Unbalanced type hydraulic oil pumping machine
CN102182429A (en) * 2011-04-02 2011-09-14 中国石油大学(华东) Air balance hydraulic pumping unit for offshore platform
CN102635334A (en) * 2012-03-15 2012-08-15 盖争 Wind-power hydraulic oil pumping machine
CN104314527A (en) * 2014-10-29 2015-01-28 胜利油田高原石油装备有限责任公司 Hydraulic pumping unit with power-assisted cylinder and oil production method of hydraulic pumping unit
CN104329060A (en) * 2014-10-29 2015-02-04 胜利油田高原石油装备有限责任公司 Two-well oil extraction hydraulic pumping unit adopting power-assisting oil cylinders and two-well oil extraction method
CN108980141A (en) * 2018-08-03 2018-12-11 中国石油天然气股份有限公司 Hydraulic oil pumping Oil cylinder, hydraulic pumping unit and its working method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101913349A (en) * 2010-08-19 2010-12-15 肖华军 Mechanical oil-pressure energy storage driver
CN102155188A (en) * 2011-04-01 2011-08-17 孙茂意 Unbalanced type hydraulic oil pumping machine
CN102182429A (en) * 2011-04-02 2011-09-14 中国石油大学(华东) Air balance hydraulic pumping unit for offshore platform
CN102182429B (en) * 2011-04-02 2014-04-02 中国石油大学(华东) Air balance hydraulic pumping unit for offshore platform
CN102635334A (en) * 2012-03-15 2012-08-15 盖争 Wind-power hydraulic oil pumping machine
CN104314527A (en) * 2014-10-29 2015-01-28 胜利油田高原石油装备有限责任公司 Hydraulic pumping unit with power-assisted cylinder and oil production method of hydraulic pumping unit
CN104329060A (en) * 2014-10-29 2015-02-04 胜利油田高原石油装备有限责任公司 Two-well oil extraction hydraulic pumping unit adopting power-assisting oil cylinders and two-well oil extraction method
CN108980141A (en) * 2018-08-03 2018-12-11 中国石油天然气股份有限公司 Hydraulic oil pumping Oil cylinder, hydraulic pumping unit and its working method

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Application publication date: 20091202

C02 Deemed withdrawal of patent application after publication (patent law 2001)