CN1415858A - Electric oil-immersed plunger pump - Google Patents
Electric oil-immersed plunger pump Download PDFInfo
- Publication number
- CN1415858A CN1415858A CN 02146064 CN02146064A CN1415858A CN 1415858 A CN1415858 A CN 1415858A CN 02146064 CN02146064 CN 02146064 CN 02146064 A CN02146064 A CN 02146064A CN 1415858 A CN1415858 A CN 1415858A
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- pump
- plunger
- guiding valve
- oil
- ball screw
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Abstract
Electric potential plunger pump is composed of potential engine, ballscrew, driving unit and slide valve double-acting pump, the potential engine is a synchronous engine with a protector mounted and fixed at the bottom end of a flange short link the ballscrew driving unit is made up of mutually matched ballscrew and screw nut inside the flange short link; the slide valve double-acting pump constitutes pump tube, slide valve and plugner. When synchronous engine rotates back and front, it can make the plunger move up and down by ballscrew driving unit, when plugner goes up the pump tube up oil valve closes and down oil valve opens, crude oil outside the pump enters into pump lower ring from down oil valve, and crude oil in the up-ring enters into oil tube to be lifted to the ground.
Description
Technical field
The present invention relates to a kind of oil field oil extraction pump, particularly relate to a kind of electrical submersible plunger pump.
Background technique
At present, the oil extraction pump of field use roughly can be divided into two big class, i.e. rod pump and rodless pumps both at home and abroad; Rodless pump mainly contains hydraulic pump and electric submersible centrifugal pump.The efficient of hydraulic pump is on the low side and need the professional pumping plant of foundation, so its application area is less.The rotating speed height of electric submersible centrifugal pump, discharge capacity are big, but it is very difficult to reduce rotating speed, therefore can only be used for the oil well of feed flow abundance.Just because of above-mentioned many disadvantages, the application area of rodless pump is very restricted, therefore the production well in most oil fields still adopts sucker rod pumping.
Rod pump of the prior art mostly is reciprocating plunger pump, ground pumping unit becomes rotatablely moving of motor and pumps and be delivered to the oil pump plunger piston that is immersed in the oil reservoir by sucker rod, plunger is pumped in pump barrel and realizes oil pumping.Because rod string is longer, the sucker rod resiliently deformable that pump load and sucker rod deadweight cause is very big, and then causes the throw of pump loss bigger.And a reciprocal process of plunger pump generally has only upstroke fuel-displaced, so its pump efficiency is lower.In addition, above-mentioned reciprocating plunger pump also is easy to generate so-called gas lock phenomenon, and pump efficiency is further reduced.
Summary of the invention
Purpose of the present invention promptly is to provide a kind of efficient height and the little electrical submersible pump plunger of loss of plunger stroke.
To achieve these goals, the present invention utilizes oil-submersible motor, ball screw driving mechanism and sliding valve style double-acting pump to constitute a kind of electrical submersible plunger pump.Oil-submersible motor adopts the synchronous machine that has protector, is fixed on the lower end of flange spool.The ball screw driving mechanism is made of ball screw of working in coordination and feed screw nut; In flange spool, its lower end links to each other with the synchronous machine transmission shaft and can be by the forward and reverse rotation of synchronous machine drives feed screw nut by Bearing Installation; The upper end of ball screw is by the fixedly connected pull bar of nut.The sliding valve style double-acting pump is made of pump barrel, guiding valve and plunger; The closed at both ends of pump barrel, its lower end links to each other with the upper end of flange spool by packoff nipple, and its upper and lower is respectively equipped with fuel tap and following fuel tap; Guiding valve is installed in the pump barrel between fuel tap and the following fuel tap and can slides up and down therein, is sealing between guiding valve and the pump barrel; Plunger is the hollow rod shape of upper end open, be located in the central authorities of guiding valve and work in coordination with guiding valve, its lower end links to each other with pull bar and can pump with pull bar, its opening end stretches out outside the pump barrel, the position that plunger matches with guiding valve is provided with upper oil hole and following oilhole, and the downside of the upside of upper oil hole and following oilhole is respectively equipped with upper sealing ring and lower sealing ring.
In above-mentioned electrical submersible plunger pump, the ball screw driving mechanism can change forward and reverse rotation of synchronous machine into the straight reciprocating motion of pull bar and plunger and play decelerating effect, thereby makes high-speed electric expreess locomotive can directly drive the sliding valve style double action for reciprocating pump.When plunger is up, lower sealing ring contacts and makes down oilhole sealing with guiding valve, following fuel tap opens and goes up fuel tap and cut out, and the outer crude oil of pump enters in the pump the annular space of bottom from fuel tap down, crude oil in the upper annulus is then entered in the plunger cavity by upper oil hole, and then enters oil pipe and give rise to ground; When plunger is descending, upper sealing ring contacts with guiding valve and makes down the oilhole sealing, and last fuel tap opens and descends fuel tap to cut out, and the outer crude oil of pump promptly enters the pump internal upper part annular space from last fuel tap, crude oil in the annular space of bottom then enters in the plunger cavity through following oilhole, and then enters oil pipe and give rise to ground.This shows that along with the constantly forward and reverse rotation of synchronous machine, plunger will constantly pump, crude oil will give rise to ground continuously.In the present invention, because the transmission of ball screw driving mechanism and the to-and-fro motion of plunger carry out in the down-hole fully, so its transmission efficiency height, loss of plunger stroke are little, can realize efficient oil recovery.
Be described in further detail below in conjunction with the technical characteristics of specific embodiment electrical submersible plunger pump of the present invention.
Description of drawings
Fig. 1 is the structural representation of electrical submersible plunger pump of the present invention.
Embodiment
As shown in Figure 1, electrical submersible plunger pump of the present invention mainly is made of oil-submersible motor, ball screw driving mechanism and sliding valve style double-acting pump.Oil-submersible motor adopts the synchronous machine 2 that has protector 1, is fixed on the lower end of flange spool 3.The ball screw driving mechanism is made of ball screw 4 of working in coordination and feed screw nut 5.Feed screw nut 5 is installed in the flange spool 3 by bearing 6, and its lower end links to each other with the transmission shaft 7 of synchronous machine 2 and can drive forward and reverse rotation in flange spool 3 by synchronous machine 2.The upper end of ball screw 4 is by nut 8 fixedly connected pull bars 9; Offer the keyway and the lead key 10 of working in coordination on the inwall of the outer cylinder of nut 8 and flange spool 3 respectively, rotate to prevent ball screw 4 and pull bar 9.The sliding valve style double-acting pump is made of pump barrel, guiding valve and plunger.Pump barrel 11 closed at both ends, its lower end links to each other with the upper end of flange spool 3 by packoff nipple 12, and its upper end is provided with the connection pipe nipple 13 that can connect tubing string, and the upper and lower of pump barrel 11 is respectively equipped with fuel tap 14 and following fuel tap 15.Guiding valve 16 is installed in the pump barrel between fuel tap 14 and the following fuel tap 15 and can slides up and down therein, is piston ring packing or clearance seal between guiding valve 16 and the pump barrel 11.Plunger 17 is the hollow rod shape of upper end open, be located in the central authorities of guiding valve 16 and work in coordination with guiding valve 16, its lower end links to each other with the upper end of pull bar 9 and can pump with pull bar 9, its opening end stretches out outside the pump barrel 11, the position that plunger 17 matches with slide cartridge 16 is provided with upper oil hole 18 and following oilhole 19, and the upside of upper oil hole 18 is respectively equipped with upper sealing ring 20 and lower sealing ring 21 with the downside that descends porose 19.
During installation, with above-mentioned electrical submersible plunger pump by connecting pipe nipple 13 and link to each other and transferring to precalculated position in the oil well with tubing string.During work, periodically forward and reverse rotations of synchronous machine 2, the ball screw driving mechanism is transformed into pumping of pull bar 9 and plunger 17 with forward and reverse rotation of synchronous machine 2 and slows down.When plunger 17 is up, guiding valve 16 contacts and makes down oilhole 19 sealings with lower sealing ring 21, last fuel tap 14 cuts out and descends fuel tap 15 to open, it is aerial that the outer crude oil of pump enters the pump inner lower ring from fuel tap 15 down, crude oil in the last annular space is then entered in the cavity of plunger 17 by upper oil hole 18, and then enters in the oil pipe and give rise to ground.When plunger 17 is descending, guiding valve 16 contacts and makes upper oil hole 18 sealings with upper sealing ring 20, last fuel tap 14 opens and descends fuel tap 15 to cut out, it is aerial that the outer crude oil of pump enters the pump inner upper ring from last fuel tap 14, crude oil in the following annular space is then entered in the cavity of plunger 17 by oilhole 19 down, and then enters in the oil pipe and give rise to ground.This shows no matter plunger 17 is up or descending, plunger pump all will suck and discharge fluid.
In the present invention, because ball screw/feed screw nut's transmission can be transformed into pumping of plunger with forward and reverse rotation of synchronous machine, play decelerating effect simultaneously, therefore, high-speed electric expreess locomotive can directly drive reciprocating pump, thereby improves its transmission efficiency.And double-acting pump is a sliding valve style, and the keying of its guiding valve is a forced opening-closing, thereby its pump efficiency is very high, can prevent to lock gas.
In sum as can be known, efficient height of the present invention, loss of plunger stroke are little, so be particularly suitable for as the oil field oil extraction pump.
Claims (5)
1. an electrical submersible plunger pump is characterized in that being made of oil-submersible motor, ball screw driving mechanism and sliding valve style double-acting pump; Described oil-submersible motor is the synchronous machine that has protector, is fixed on the lower end of flange spool; Described ball screw driving mechanism is made of ball screw of working in coordination and feed screw nut, feed screw nut by Bearing Installation in flange spool, its lower end links to each other with the synchronous machine transmission shaft and can be by the forward and reverse rotation of synchronous machine drives, and the upper end of ball screw is fixedly connected with a pull bar by nut; Described sliding valve style double-acting pump is made of pump barrel, guiding valve and plunger, the closed at both ends of pump barrel, and its lower end links to each other with the upper end of flange spool by packoff nipple, and its upper and lower is respectively equipped with fuel tap and following fuel tap; Guiding valve is installed in the pump barrel between fuel tap and the following fuel tap and can slides up and down therein, is sealing between guiding valve and the pump barrel; Plunger is the hollow rod shape of upper end open, be located in the central authorities of guiding valve and work in coordination with guiding valve, its lower end links to each other with the upper end of pull bar and can pump with pull bar, its opening end stretches out outside the pump barrel, the position that plunger matches with guiding valve is provided with upper oil hole and following oilhole, and the downside of the upside of upper oil hole and following oilhole is respectively equipped with upper sealing ring and lower sealing ring.
2. electrical submersible plunger pump according to claim 1 is characterized in that being respectively equipped with the keyway and the lead key of working in coordination on described ball screw and pull bar attaching nut's outer cylinder and the flange spool inwall.
3. electrical submersible plunger pump according to claim 1 is characterized in that the upper end of described pump barrel is provided with the connection pipe nipple that is used to connect tubing string.
4. electrical submersible plunger pump according to claim 1 is characterized in that being between described guiding valve and the pump barrel piston ring packing.
5. electrical submersible plunger pump according to claim 1 is characterized in that being between described guiding valve and the pump barrel clearance seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02146064 CN1415858A (en) | 2002-10-29 | 2002-10-29 | Electric oil-immersed plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02146064 CN1415858A (en) | 2002-10-29 | 2002-10-29 | Electric oil-immersed plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1415858A true CN1415858A (en) | 2003-05-07 |
Family
ID=4751004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02146064 Pending CN1415858A (en) | 2002-10-29 | 2002-10-29 | Electric oil-immersed plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1415858A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006029570A1 (en) * | 2004-09-17 | 2006-03-23 | Chunguo Feng | A nc reciprocating immersible oil pump |
| CN100390372C (en) * | 2006-03-24 | 2008-05-28 | 哈尔滨工业大学 | Underground reciprocating oil puming machine driven by rotary motor |
| CN102226466A (en) * | 2011-06-13 | 2011-10-26 | 张庆鹏 | Reciprocating screw transmission mechanism |
| CN102345589A (en) * | 2011-10-25 | 2012-02-08 | 崔建忠 | Dual-track and dual-acting oil extraction device |
| CN102418682A (en) * | 2011-12-15 | 2012-04-18 | 广州正奇科技有限公司 | Double-cylinder metering plunger pump and metering method thereof |
| CN103835681A (en) * | 2014-03-13 | 2014-06-04 | 东营市一旭石油装备有限公司 | Reciprocating oil pumping device driven by submersible motor |
| CN107503996A (en) * | 2017-09-08 | 2017-12-22 | 王少斌 | A kind of integrating device of motor precise synchronization control hydraulic oil and fluid displacement |
| RU2643881C1 (en) * | 2017-05-02 | 2018-02-06 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тюменский индустриальный университет" (ТИУ) | Piston pump |
| RU2654560C1 (en) * | 2017-05-02 | 2018-05-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тюменский индустриальный университет" (ТИУ) | Plunger unit |
| CN111434920A (en) * | 2019-01-14 | 2020-07-21 | 中国石油天然气股份有限公司 | Oil extraction device |
-
2002
- 2002-10-29 CN CN 02146064 patent/CN1415858A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006029570A1 (en) * | 2004-09-17 | 2006-03-23 | Chunguo Feng | A nc reciprocating immersible oil pump |
| EP1790853A1 (en) * | 2004-09-17 | 2007-05-30 | Chunguo Feng | A nc reciprocating immersible oil pump |
| CN100353062C (en) * | 2004-09-17 | 2007-12-05 | 冯春国 | Digital control reciprocating oil submersible electric pump |
| EA009268B1 (en) * | 2004-09-17 | 2007-12-28 | Чуньго Фэн | A nc reciprocating immersible oil pump |
| AU2005284521B2 (en) * | 2004-09-17 | 2008-07-31 | Chunguo Feng | A nc reciprocating immersible oil pump |
| US7789637B2 (en) | 2004-09-17 | 2010-09-07 | Chunguo Feng | Numerically controlled reciprocating submersible pump apparatus |
| EP1790853A4 (en) * | 2004-09-17 | 2010-11-17 | Chunguo Feng | A nc reciprocating immersible oil pump |
| CN100390372C (en) * | 2006-03-24 | 2008-05-28 | 哈尔滨工业大学 | Underground reciprocating oil puming machine driven by rotary motor |
| CN102226466A (en) * | 2011-06-13 | 2011-10-26 | 张庆鹏 | Reciprocating screw transmission mechanism |
| CN102226466B (en) * | 2011-06-13 | 2013-10-02 | 张庆鹏 | Reciprocating screw transmission mechanism |
| CN102345589A (en) * | 2011-10-25 | 2012-02-08 | 崔建忠 | Dual-track and dual-acting oil extraction device |
| CN102418682A (en) * | 2011-12-15 | 2012-04-18 | 广州正奇科技有限公司 | Double-cylinder metering plunger pump and metering method thereof |
| CN102418682B (en) * | 2011-12-15 | 2014-03-12 | 广州正奇科技有限公司 | Double-cylinder metering plunger pump and metering method thereof |
| CN103835681A (en) * | 2014-03-13 | 2014-06-04 | 东营市一旭石油装备有限公司 | Reciprocating oil pumping device driven by submersible motor |
| RU2643881C1 (en) * | 2017-05-02 | 2018-02-06 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тюменский индустриальный университет" (ТИУ) | Piston pump |
| RU2654560C1 (en) * | 2017-05-02 | 2018-05-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тюменский индустриальный университет" (ТИУ) | Plunger unit |
| CN107503996A (en) * | 2017-09-08 | 2017-12-22 | 王少斌 | A kind of integrating device of motor precise synchronization control hydraulic oil and fluid displacement |
| US10494922B2 (en) | 2017-09-08 | 2019-12-03 | Shaobin Wang | Integrated apparatus for precisely and synchronously controlling amounts of discharged hydraulic oil and fluid using motor |
| CN111434920A (en) * | 2019-01-14 | 2020-07-21 | 中国石油天然气股份有限公司 | Oil extraction device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |