CN203022704U - Dual-plunger-oil-cylinder-type hydraulic oil pumping machine - Google Patents

Dual-plunger-oil-cylinder-type hydraulic oil pumping machine Download PDF

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Publication number
CN203022704U
CN203022704U CN 201320002228 CN201320002228U CN203022704U CN 203022704 U CN203022704 U CN 203022704U CN 201320002228 CN201320002228 CN 201320002228 CN 201320002228 U CN201320002228 U CN 201320002228U CN 203022704 U CN203022704 U CN 203022704U
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CN
China
Prior art keywords
motor
hydraulic
oil
pipeline
cylinder
Prior art date
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Expired - Fee Related
Application number
CN 201320002228
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Chinese (zh)
Inventor
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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Priority to CN 201320002228 priority Critical patent/CN203022704U/en
Application granted granted Critical
Publication of CN203022704U publication Critical patent/CN203022704U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a dual-plunger-oil-cylinder-type hydraulic oil pumping machine, and relates to the field of oil pumping equipment manufacturing in an oil field. The dual-plunger-oil-cylinder-type hydraulic oil pumping machine comprises two operating oil cylinders, an energy storage device, a well pole, a hydraulic oil pump and a motor, wherein pipelines of rodless cavities of the operating oil cylinders are connected with the energy storage device, and a pipeline is additionally arranged to be connected with the hydraulic oil pump connected with the motor; piston rods of the operating oil cylinders and one end of the well pole are fixedly connected to a connecting frame; cylinder bodies of the operating oil cylinders are fixed on a working bench; the well pole penetrates through the working bench and extends into an oil well; the pipelines connected with the energy storage device and the hydraulic oil pump, of the operating oil cylinders are all provided with reversing valves; the energy storage device is additionally provided with a pipeline connected with the hydraulic motor; the hydraulic motor is connected with the motor; and pipeline connected with the hydraulic motor, of the energy storage device is provided a reversing valve. The energy storage device is additionally provided with the pipeline connected with the hydraulic motor, the hydraulic motor is connected with the motor, and the hydraulic motor rotates by utilizing the intensity of the energy storage device, so that the acting torque of the motor is reduced.

Description

A kind of double plunger cylinder type hydraulic pumping unit
Technical field
The utility model relates to oil-pumping equipment in oil field and makes the field, relates in particular to a kind of double plunger cylinder type hydraulic pumping unit.
Background technology
What oil field, the contemporary world various countries overwhelming majority was used is that bar type oil pumper is arranged, and its sucker rod pumping machine moves reciprocatingly down-hole oil pump plunger and crude oil is evacuated to ground by driving sucker rod.Due to the normally thousands of rice of oil well depth. sucker rod also also different with different its weight of oil well depth.According to investigating with each oil field, Southeast Asia at home at present. all in 5-15 ton scope, what the oil field routine was used now is beam type machinery oil pumper (being commonly called as the machine of kowtowing) to the overwhelming majority.
For the mining depth oil well, heavy oil wells, must use the oil pumper of large load, although so just need the oil pumper of the large load of development long stroke. beam pumping unit has simple in structure, being convenient to the advantages such as maintenance, is currently to make traditionally oil pumper with the most use, but wish design long stroke, large load but has many problems, 1. approximately 34 tons of the complete machine weight of the too huge as 12 type machines of mechanism size; 2. balance is poor, and its walking beam length is over 9 meters. and the weight of balance portion also surpasses 10 tons of .3 because size strengthens, and the force-bearing situation of complete machine is variation also. and these all bring difficulty for installation and transportation and well layout.This shows, the conventional machine of kowtowing is difficult to satisfy long stroke, the requirement of low jig frequency and large load.
People are in order to solve the large problem of function consumption of kowtowing, the loss that has proposed to utilize hydraulic principle and reduced energy consumption by the mode of accumulator accumulation of energy, reclaim as much as possible the acting energy consumption, the hydraulic pumping unit of prior art generally all adopts powerful motor to drive hydraulic pump injection liquid force feed in the hydraulic cylinder to come the lift well bar to reach the purpose of oil pumping, but adopt this kind mode very high to model and the power requirement of motor, the energy consumption of motor shortens greatly due to the increase of load huge and application life, affected pumping efficiency, had much room for improvement.
Summary of the invention
The utility model is for the deficiencies in the prior art, provide a kind of energy consumption low, extend motor application life and reduce the double plunger cylinder type hydraulic pumping unit of power of motor.
the utility model is for solving the problems of the technologies described above, provide following technical scheme: a kind of double plunger cylinder type hydraulic pumping unit, comprise 2 operating cylinders, accumulator, the well bar, hydraulic oil pump, motor, operating cylinder rodless cavity pipeline connects accumulator, and separately establish a pipeline connecting fluid pressure oil pump, described hydraulic oil Pump and Electromotor is connected, it is characterized in that described operating cylinder piston rod and well bar one end are fixedly connected on link, the operating cylinder cylinder body is fixed on workbench, the well bar passes workbench and stretches in oil well, described operating cylinder and accumulator, be provided with reversal valve on the pipeline that hydraulic oil pump connects, described accumulator separately is provided with a pipeline connecting fluid pressure motor, described hydraulic motor is connected with motor, be provided with reversal valve on described accumulator and pipeline that hydraulic motor is connected.
Key of the present utility model is, separately establish a pipeline at accumulator and connect a hydraulic motor, hydraulic motor connects motor, thereby the pressure that utilizes accumulator makes the hydraulic motor rotation reduce the torsional forces of motor acting, energy consumption of electrical machinery is reduced, and make by duplex the form that oil cylinder does work simultaneously and make the well bar increase and smooth decreasing.
As preferably, described hydraulic oil pump has additional one way valve to the pipeline between reversal valve.
As preferably, hydraulic motor has additional one way valve to the pipeline between reversal valve.
As further improvement of the utility model, described operating cylinder is symmetricly set in well bar both sides, by this kind setting, accepts evenly when making the well bar increase, and is difficult for occuring deflection, improves the axiality that the well bar rises or descends, and from further minimizing energy consumption.
for better explaining the technical solution of the utility model, below introduce in detail operating principle of the present utility model: when the utility model is started working, the operation of motor drives hydraulic oil pump, hydraulic oil passes through one way valve successively, reversal valve is to two operating cylinders while fuel feeding, making the operating cylinder piston rod protrude upward the well bar that drives oil well steadily rises, when the well bar rises to suitable height, the hydraulic oil pump off-load, close reversal valve between hydraulic oil pump and operating cylinder and the reversal valve between accumulator and hydraulic motor, the piston rod of operating cylinder begins descending under the load of well bar, operating cylinder chamber inner fluid is pressed into accumulator, accumulator begins energy storage, pressure increases, when the well bar drops to the bottom, close the reversal valve between operating cylinder and accumulator, open the reversal valve between accumulator and hydraulic motor, reversal valve between hydraulic oil pump and operating cylinder, hydraulic oil pump begins another load operation of taking turns, due to the pressure action in accumulator, its pressure oil flows to hydraulic motor, acting has increased the torsional forces that motor does work thereby pressure oil is to hydraulic motor, reach the purpose of recovery well bar decline potential energy, thereby reduced the energy consumption of the second turbin generator acting, and then can reduce the allocating power of motor.
The beneficial effects of the utility model: operating cylinder of the present utility model is single-action hydraulic cylinder (without piston), make simple, seal few (only needing the packed-piston bar), so long service life is safeguarded and changes sealing simply easily, owing to having adopted duplex to make the oil cylinder syndeton, frame is simple, its stress equalization, its workbench can be directly installed on the flange of well mouth of oil well, do not need any foundation of civil work; Operating cylinder has been taked reverse installation form, has reduced greatly the height (reducing at least 3 meters) of whole oil pumper, makes whole derrick more firm, and Maintenance and Repair are also convenient; Owing to being two operating cylinder work, be more suitable for heavy load (more than 20 tons) and long stroke (4 meters) oil well also can use.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
a kind of double plunger cylinder type hydraulic pumping unit, comprise 2 operating cylinders 001, accumulator 002, well bar 003, hydraulic oil pump 004, motor 005, operating cylinder 001 rodless cavity 011 pipeline connects accumulator 002, and separately establish a pipeline connecting fluid pressure oil pump 004, described hydraulic oil pump 004 is connected with motor 005, described operating cylinder 001 piston rod and well bar 003 1 ends are fixedly connected on link 006, operating cylinder 001 cylinder body is fixed on workbench 007, well bar 003 passes workbench 007 and stretches in oil well 008, described operating cylinder 001 and accumulator 002, be provided with reversal valve 009 on the pipeline that hydraulic oil pump 004 connects, described accumulator 002 separately is provided with a pipeline connecting fluid pressure motor 010, described hydraulic motor 010 is connected with motor 005, be provided with reversal valve 009 on described accumulator 002 and pipeline that hydraulic motor 010 is connected, described hydraulic oil pump 004 has additional one way valve 012 to the pipeline of 009 of reversal valve, hydraulic motor 010 has additional one way valve 012 to the pipeline of 009 of reversal valve, described operating cylinder 001 is symmetricly set in well bar 003 both sides.

Claims (4)

1. double plunger cylinder type hydraulic pumping unit, comprise 2 operating cylinders, accumulator, the well bar, hydraulic oil pump, motor, operating cylinder rodless cavity pipeline connects accumulator, and separately establish a pipeline connecting fluid pressure oil pump, described hydraulic oil Pump and Electromotor is connected, it is characterized in that described operating cylinder piston rod and well bar one end are fixedly connected on link, the operating cylinder cylinder body is fixed on workbench, the well bar passes workbench and stretches in oil well, described operating cylinder and accumulator, be provided with reversal valve on the pipeline that hydraulic oil pump connects, described accumulator separately is provided with a pipeline connecting fluid pressure motor, described hydraulic motor is connected with motor, be provided with reversal valve on described accumulator and pipeline that hydraulic motor is connected.
2. a kind of double plunger cylinder type hydraulic pumping unit according to claim 1, is characterized in that described hydraulic oil pump has additional one way valve to the pipeline between reversal valve.
3. a kind of double plunger cylinder type hydraulic pumping unit according to claim 1, is characterized in that hydraulic motor has additional one way valve to the pipeline between reversal valve.
4. a kind of double plunger cylinder type hydraulic pumping unit according to claim 1 is characterized in that described operating cylinder is symmetricly set in well bar both sides.
CN 201320002228 2013-01-05 2013-01-05 Dual-plunger-oil-cylinder-type hydraulic oil pumping machine Expired - Fee Related CN203022704U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320002228 CN203022704U (en) 2013-01-05 2013-01-05 Dual-plunger-oil-cylinder-type hydraulic oil pumping machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320002228 CN203022704U (en) 2013-01-05 2013-01-05 Dual-plunger-oil-cylinder-type hydraulic oil pumping machine

Publications (1)

Publication Number Publication Date
CN203022704U true CN203022704U (en) 2013-06-26

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Application Number Title Priority Date Filing Date
CN 201320002228 Expired - Fee Related CN203022704U (en) 2013-01-05 2013-01-05 Dual-plunger-oil-cylinder-type hydraulic oil pumping machine

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061718A (en) * 2013-01-05 2013-04-24 无锡市科优液压设备制造有限公司 Dual-plunger cylinder type hydraulic pumping unit
CN107237790A (en) * 2016-03-29 2017-10-10 中国石油化工股份有限公司 Dynamic cylinder type wellhead receptacle fills elevating ram

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103061718A (en) * 2013-01-05 2013-04-24 无锡市科优液压设备制造有限公司 Dual-plunger cylinder type hydraulic pumping unit
CN107237790A (en) * 2016-03-29 2017-10-10 中国石油化工股份有限公司 Dynamic cylinder type wellhead receptacle fills elevating ram
CN107237790B (en) * 2016-03-29 2019-04-23 中国石油化工股份有限公司 Dynamic cylinder type wellhead receptacle fills elevating ram

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130626

Termination date: 20150105

EXPY Termination of patent right or utility model