CN103061717B - A kind of four cylinder type hydraulic oil pumps - Google Patents

A kind of four cylinder type hydraulic oil pumps Download PDF

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Publication number
CN103061717B
CN103061717B CN201310001811.9A CN201310001811A CN103061717B CN 103061717 B CN103061717 B CN 103061717B CN 201310001811 A CN201310001811 A CN 201310001811A CN 103061717 B CN103061717 B CN 103061717B
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China
Prior art keywords
cylinder
well bar
balancing
accumulator
well
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CN201310001811.9A
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CN103061717A (en
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钱雪强
邵建辉
周幼海
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WUXI KEYOU HYDRAULICS EQUIPMENT MANUFACTURE CO Ltd
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WUXI KEYOU HYDRAULICS EQUIPMENT MANUFACTURE CO Ltd
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Abstract

A kind of four cylinder type hydraulic oil pumps, comprise two operating cylinders, accumulator, hydraulic oil pump, reversal valve and pumpingh well bar, operating cylinder rodless cavity pipeline connecting fluid pressure oil pump, described pipeline is provided with reversal valve, characterized by further comprising two balancing cylinders, described operating cylinder and balancing cylinder are symmetrical between two is crossly centered around well bar surrounding, piston rod and the well bar of described operating cylinder and balancing cylinder are fixedly connected on link, described operating cylinder and balance cylinder block are fixed on workbench, described workbench offers the through hole that well bar is passed, well bar stretches in oil well, described balancing cylinder rodless cavity pipeline connects accumulator, this pipeline is separately provided with an oil circuit and connects little hydraulic oil pump, the pressure of accumulator is utilized to make balancing cylinder generation thrust upwards, thus counteract the quality of well bar, thus reclaimed the gravitional force of well bar, greatly reduce energy consumption, improve pumping efficiency.

Description

A kind of four cylinder type hydraulic oil pumps
Technical field
The present invention relates to for oil-pumping equipment in oil field, particularly relate to a kind of four cylinder type hydraulic oil pumps.
Background technology
The contemporary world various countries oil field overwhelming majority has used rod-type oil pumper, and crude oil is evacuated to ground by driving sucker rod to make down-hole oil pump plunger move reciprocatingly by its sucker rod pumping machine.Due to the normally thousands of rice of oil well depth. sucker rod also also different with oil well depth its weight different.According to each oil field investigation with Southeast Asia at home at present. the overwhelming majority is within the scope of 5-15 ton, and present oil field routine uses beam type machinery oil pumper (being commonly called as the machine of kowtowing).
In order to mining depth oil well; heavy oil wells; the oil pumper of large load must be used; although so just need the oil pumper developing the large load of long stroke. beam pumping unit has structure simple; being convenient to the advantages such as maintenance, is currently make oil pumper with the most use traditionally, but for design long stroke; large load but has many problems, 1. the too huge complete machine weight about 34 tons as 12 type machines of mechanism size; 2. balance is poor, and its walking beam length is more than 9 meters. the weight of balance portion also more than 10 tons of .3 due to larger, the force-bearing situation of complete machine is also deteriorated. these all bring difficulty to installation and transportation and well layout.As can be seen here, the conventional machine of kowtowing is difficult to meet long stroke, the requirement of low jig frequency and large load.
People are in order to solve the problems of the technologies described above, have devised again and utilize hydraulic oil pumping equipment to replace traditional machine of kowtowing, existing hydraulic pumping unit generally all adopts single hydraulic cylinder for working, and the gravitional force of well bar cannot effectively reclaim, cause the increase of energy consumption, have much room for improvement.
Summary of the invention
The present invention is directed to above-mentioned technical problem, provide a kind of structure simple, need the gravitional force of recovery well bar, four cylinder type hydraulic oil pumps that pumping efficiency is high.
The present invention is for solving the problems of the technologies described above, provide following technical scheme: a kind of four cylinder type hydraulic oil pumps, comprise two operating cylinders, accumulator, hydraulic oil pump, reversal valve and pumpingh well bar, operating cylinder rodless cavity pipeline connecting fluid pressure oil pump, described pipeline is provided with reversal valve, characterized by further comprising two balancing cylinders, described operating cylinder and balancing cylinder are symmetrical between two is crossly centered around well bar surrounding, described operating cylinder, piston rod and the well bar of balancing cylinder are fixedly connected on link, described operating cylinder, the cylinder body of balancing cylinder is fixed on workbench, described workbench offers the through hole that well bar is passed, well bar stretches in oil well, described balancing cylinder rodless cavity pipeline connects accumulator, this pipeline is separately provided with an oil circuit and connects little hydraulic oil pump.
By being fixed on link by cross to balancing cylinder, operating cylinder and well bar, balancing cylinder pipeline connects accumulator, balancing cylinder effectively counteracts the gravitional force of well bar under the pressure action of accumulator, and is fixedly connected with by cross the intensity considerably increasing structure.
As a further improvement on the present invention, described accumulator is hollow seal tank body, and tank is filled with pressed gas.
As a further improvement on the present invention, accumulator is connected to form by relay cylinder, pressure gas bottle successively seal for pipe joints, is provided with piston and oil cylinder is separated into two seal chambers in described relay cylinder.
As preferably, described link is cross link.By this kind of structure, simple and effectively fix two operating cylinders, two balancing cylinders.
For better explaining technical scheme of the present invention, introduce operating principle of the present invention in detail below: balancing cylinder produces thrust upwards under the pressure action of accumulator, balances the mass loading of well bar, effectively counteracts the gravitional force of well bar.Operating cylinder just can make well bar rise under the pressure oil of hydraulic oil pump drives, after reversal valve release, pumpingh well bar falls back to home position again, so come and go and can carry out continuous operation, because balancing cylinder carries the quality of well bar, operating cylinder only needs less energy just destruction of balance can realize the motion of well bar.
Beneficial effect of the present invention: the present invention by by balancing cylinder, operating cylinder is cross is fixed on around well bar, balancing cylinder is connected with accumulator, the pressure of accumulator is utilized to make balancing cylinder generation thrust upwards, thus counteract the quality of well bar, thus reclaimed the gravitional force of well bar, greatly reduce energy consumption, improve pumping efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is link structural representation.
Fig. 3 is embodiment 2 accumulator structure schematic diagram.
Detailed description of the invention
Embodiment 1: a kind of four cylinder type hydraulic oil pumps, comprise two operating cylinders 001, accumulator 002, hydraulic oil pump 003, reversal valve 004 and pumpingh well bar 005, operating cylinder 001 rodless cavity 011 pipeline connecting fluid pressure oil pump 003, described pipeline is provided with reversal valve 006, also comprise two balancing cylinders 007, described operating cylinder 001 and balancing cylinder 007 are symmetrical between two is crossly centered around well bar 005 surrounding, described operating cylinder 001, the piston rod of balancing cylinder 007 and well bar 005 are fixedly connected on link 008, described operating cylinder 001, the cylinder body of balancing cylinder 007 is fixed on workbench 009, described workbench 009 offers the through hole that well bar 005 is passed, well bar 005 stretches in oil well 010, described balancing cylinder 007 rodless cavity 071 pipeline connects accumulator 002, this pipeline is separately provided with an oil circuit and connects little hydraulic oil pump 012, described accumulator 002 is hollow seal tank body, tank is filled with pressed gas, described link 008 is cross link.
Embodiment 2: with reference to embodiment 1, described accumulator 002 is connected to form by relay cylinder 021, pressure gas bottle 022 successively seal for pipe joints, is provided with piston 211 and oil cylinder is separated into two seal chambers in described relay cylinder 021.

Claims (1)

1. a cylinder type hydraulic oil pump, comprise two operating cylinders, accumulator, hydraulic oil pump, reversal valve and pumpingh well bar, operating cylinder rodless cavity pipeline connecting fluid pressure oil pump, described pipeline is provided with reversal valve, characterized by further comprising two balancing cylinders, described operating cylinder and balancing cylinder are symmetrical between two is crossly centered around well bar surrounding, described operating cylinder, piston rod and the well bar of balancing cylinder are fixedly connected on link, described operating cylinder, the cylinder body of balancing cylinder is fixed on workbench, described workbench offers the through hole that well bar is passed, well bar stretches in oil well, described balancing cylinder rodless cavity pipeline connects accumulator, this pipeline is separately provided with an oil circuit and connects little hydraulic oil pump, described accumulator is hollow seal tank body, tank is filled with pressed gas, accumulator is by relay cylinder, pressure gas bottle successively seal for pipe joints connects to form, be provided with piston in described relay cylinder and oil cylinder be separated into two seal chambers, described link is cross link.
CN201310001811.9A 2013-01-05 2013-01-05 A kind of four cylinder type hydraulic oil pumps Active CN103061717B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310001811.9A CN103061717B (en) 2013-01-05 2013-01-05 A kind of four cylinder type hydraulic oil pumps

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Application Number Priority Date Filing Date Title
CN201310001811.9A CN103061717B (en) 2013-01-05 2013-01-05 A kind of four cylinder type hydraulic oil pumps

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CN103061717A CN103061717A (en) 2013-04-24
CN103061717B true CN103061717B (en) 2015-09-02

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105350945B (en) * 2015-12-04 2017-11-21 上海兰石重工机械有限公司 Three cylinder self-balancing hydraulic pumping unit systems
CN106321334B (en) * 2016-06-16 2018-09-11 浙江大学 Hydraulic-driven wave energy generating set

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1063332A (en) * 1991-01-15 1992-08-05 汪朴澄 Differential balancing lever oil-pumping machine of same well
CN2199331Y (en) * 1994-07-18 1995-05-31 青岛市通用机械厂 Mechanical extended-range hydraulic pumping unit
CN201874918U (en) * 2010-11-09 2011-06-22 中国石油天然气股份有限公司 Composite hydraulic cylinder and electrohydraulic proportional lifting system thereof
CN102192199A (en) * 2010-09-07 2011-09-21 杨崇恩 Power driven system and oil pumping unit applying same
CN201982065U (en) * 2011-01-06 2011-09-21 濮阳市科锐机械工程技术有限公司 Numerical control long-stroke gas balance hydraulic pumping unit
CN203022705U (en) * 2013-01-05 2013-06-26 无锡市科优液压设备制造有限公司 Four-cylinder-type hydraulic oil pumping machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2170337C2 (en) * 1999-07-21 2001-07-10 Котов Владимир Александрович Facility to evacuate gas from hole clearance of well

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1063332A (en) * 1991-01-15 1992-08-05 汪朴澄 Differential balancing lever oil-pumping machine of same well
CN2199331Y (en) * 1994-07-18 1995-05-31 青岛市通用机械厂 Mechanical extended-range hydraulic pumping unit
CN102192199A (en) * 2010-09-07 2011-09-21 杨崇恩 Power driven system and oil pumping unit applying same
CN201874918U (en) * 2010-11-09 2011-06-22 中国石油天然气股份有限公司 Composite hydraulic cylinder and electrohydraulic proportional lifting system thereof
CN201982065U (en) * 2011-01-06 2011-09-21 濮阳市科锐机械工程技术有限公司 Numerical control long-stroke gas balance hydraulic pumping unit
CN203022705U (en) * 2013-01-05 2013-06-26 无锡市科优液压设备制造有限公司 Four-cylinder-type hydraulic oil pumping machine

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