CN201461429U - Novel submersible direct drive screw pump - Google Patents
Novel submersible direct drive screw pump Download PDFInfo
- Publication number
- CN201461429U CN201461429U CN2009200904072U CN200920090407U CN201461429U CN 201461429 U CN201461429 U CN 201461429U CN 2009200904072 U CN2009200904072 U CN 2009200904072U CN 200920090407 U CN200920090407 U CN 200920090407U CN 201461429 U CN201461429 U CN 201461429U
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- Prior art keywords
- screw pump
- synchronous motor
- permagnetic synchronous
- protector
- motor
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Abstract
The utility model relates to a deep well oil extracting pump in oil field, in particular to a novel submersible direct drive screw pump, namely an oil extracting device which omits a speed reducer positioned between a motor and a screw pump, adopts a permanent magnet synchronous motor to directly drive the down-hole screw pump and is characterized by low rotation output speed high torque. The novel submersible direct drive screw pump is characterized in that the permanent magnet synchronous motor 7, a protector 6, a flexible shaft 5 and the screw pump 4 are in coaxial connection with each other from top to bottom; the permanent magnet synchronous motor is placed downhole, and a ground frequency conversion controller performs stepless speed regulation to the motor in working in order to control rotating speed within 1- 300 revolution / minute. The novel submersible direct drive screw pump has the advantages of adopting no sucker rod or mechanical speed reducer, increasing system efficiency, reducing energy consumption, saving production cost and obtaining simple structure, convenient installation and repair, safe and reliable working performance and the like, thereby being widely applicable in extraction in crude oil well with high viscosity, high air and sand content and in marine oil extraction.
Description
Technical field
The utility model relates to a kind of oil field deep well oil extraction pump, relates in particular to a kind of novel latent oily directly-driven screw pump.
Background technique
At present.The screw pump oil production system that is adopted in the petroleum recovering industry is with the motor setting on the ground mostly, the power source that is provided by the ground power equipment passes through sucker rod, screw pump transmitting torque below km, screw pump suction downhole oil, gas, aqueous fluid, and serve ground.But this device exists following shortcoming or deficiency: 1, motor drives oil well pump work indirectly by the sucker rod more than the km, and starting torque is bigger, loss a large amount of power, reduce system effectiveness; Bar, pipe eccentric wear phenomenon are arranged when 2, using in inclined shaft; 3, because phenomenons such as sucker rod breaks, takes off usually take place for the fatigue of sucker rod, wearing and tearing, corrosion or because of problems such as viscous crude, sucker rod quality, need often maintenance, increased operating cost, improved cost for oil production.
Also have in the prior art motor is placed the down-hole, the motor of down-hole drives the screw pump rotor rotation by retarder, this technology has been cancelled sucker rod, problems such as power hungry, bar, pipe eccentric wear and rod parting have been solved, but longer because of its Transmitted chains, the retarder volume is limited, and the moment of torsion that bears is bigger, retarder is easy to break down, and influences complete machine working life.
In order to address the above problem, give full play to the superiority of well dynamic screw pump oil production, avoid retarder to break down, the utility model has been developed a kind of novel latent oily directly-driven screw pump.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of novel latent oily directly-driven screw pump.Just removing the retarder between motor and the screw pump, adopt permagnetic synchronous motor directly to drive subsurface progressive cavity, is a kind of novel latent oily directly-driven screw pump extracting device of oil of characteristics with slow-speed of revolution output high pulling torque.
The technological scheme that the utility model technical solution problem is adopted is: a kind of novel latent oily directly-driven screw pump, and its basic structure has permagnetic synchronous motor 7, protector 6, flexible shaft 5, screw pump 4; Compound mode is that permagnetic synchronous motor 7, protector 6, flexible shaft 5 and screw pump 4 are coaxial the connection, is permagnetic synchronous motor 7, protector 6, flexible shaft 5, screw pump 4 from bottom to top.
Described permagnetic synchronous motor 7 is cascade machine.
Described permagnetic synchronous motor 7, diameter are between 89~~150, and length is between 2~~12 meters, and rotating speed is 1~~300 rev/min.
Described permagnetic synchronous motor 7 is characterized in that, a plurality of permagnetic synchronous motors have an axle, to solve many motor synchronous problem, and the mutually same phase winding of each motor all is connected in series, and the number of motor and the size of power of motor are determined according to output power.
Described protector 6 is precipitating type or capsule-type protector, is lubricant oil in the protector 6, plays barrier wells liquid and provides protection for assemblies such as bearing, permagnetic synchronous motors.
The utility model has the advantages that:
(1) the direct drive screw pump-unit of permagnetic synchronous motor has the advantage of slow-speed of revolution output high pulling torque.
(2) the direct drive screw pump of permagnetic synchronous motor, no sucker rod need not mechanical deceleration device, has improved system effectiveness, has reduced energy consumption, has saved cost of production, is suitable for more economically.
(3) the Frequency Drive Control system of permagnetic synchronous motor can reach in good time regulation and control submersible screw revolution speed, regulate discharge capacity to adapt to the fluid supply capacity of oil well.
(4) permagnetic synchronous motor drive screw pump structure is simple, and installation and maintenance are convenient, and are safe and reliable, function admirable.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the utility model embodiment's an application schematic representation;
Among the figure: 1, special converter control cabinet; 2, terminal box; 3, wellhead assembly; 4, screw pump; 5, flexible shaft; 6, protector; 7, permagnetic synchronous motor; 8, oil-submersible cable.
Embodiment
Shown in structural representation Fig. 1, permagnetic synchronous motor is an elongate, and diameter is between 89~~150, and length is between 2~~12 meters, and rotating speed is 1~~300 rev/min.Permagnetic synchronous motor 7, protector 6, flexible shaft 5, screw pump 4 are coaxial connection.Permagnetic synchronous motor 7 is connected with flexible shaft 5 by protector 6, and the last axle head of flexible shaft 5 is connected with the rotor lower end of screw pump 4.Protector 6 is precipitating type or capsule-type protector, is lubricant oil in the protector 6, plays barrier wells liquid and provides protection for assemblies such as bearing, permagnetic synchronous motors.
Fig. 2 is the concrete application that is implemented in the engineering.
As can be seen from the figure, permagnetic synchronous motor 7 places the bottom of underground equipment, is connected with flexible shaft 5 by protector 6 again, and the last axle head by flexible shaft 5 is connected with the rotor lower end of screw pump 4 then.Whole connection from bottom to top, and permagnetic synchronous motor 7, protector 6, flexible shaft 5, screw pump 4 are coaxial connection.Permagnetic synchronous motor 7 provides the power of low rotation speed large torque during work, and middle decelerator-free device is by the rotor of protector 6 and flexible shaft 5 direct drive screw pumps 4.Permagnetic synchronous motor is placed on the down-hole, by ground VFC cabinet it is carried out stepless time adjustment, makes rotating speed be controlled at 1~~300 rev/min.
Ground installation special converter control cabinet 1 links to each other with terminal box 2, and 1 power that provides and the oil-submersible cable 8 of control well are connected with permagnetic synchronous motor downwards from wellhead assembly 3.
Claims (5)
1. novel latent oily directly-driven screw pump; it is characterized in that: permagnetic synchronous motor (7), protector (6), flexible shaft (5) and screw pump (4) are coaxial the connection, are permagnetic synchronous motor (7), protector (6), flexible shaft (5), screw pump (4) from bottom to top.
2. novel latent oily directly-driven screw pump according to claim 1, it is characterized in that: permagnetic synchronous motor (7) is cascade machine.
3. novel latent oily directly-driven screw pump according to claim 1 is characterized in that: permagnetic synchronous motor (7), diameter are between 89~~150, and length is between 2~~12 meters, and rotating speed is 1~~300 rev/min.
4. novel latent oily directly-driven screw pump according to claim 1 is characterized in that: permagnetic synchronous motor (7) be that a plurality of permagnetic synchronous motors have an axle, and the mutually same phase winding of each motor all is connected in series.
5. novel latent oily directly-driven screw pump according to claim 1 is characterized in that: protector (6) is precipitating type or capsule-type protector, is lubricant oil in the protector (6).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN2009200904072U CN201461429U (en) | 2009-05-22 | 2009-05-22 | Novel submersible direct drive screw pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009200904072U CN201461429U (en) | 2009-05-22 | 2009-05-22 | Novel submersible direct drive screw pump |
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CN201461429U true CN201461429U (en) | 2010-05-12 |
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CN2009200904072U Expired - Lifetime CN201461429U (en) | 2009-05-22 | 2009-05-22 | Novel submersible direct drive screw pump |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102287370A (en) * | 2011-07-11 | 2011-12-21 | 新乡市夏烽电器有限公司 | Screw pump type pressurizing water injection system |
CN102927001A (en) * | 2012-11-02 | 2013-02-13 | 中国石油天然气股份有限公司 | Method by utilizing switch reluctance motor speed regulating system for screw pump oil extraction |
CN103075392A (en) * | 2011-10-26 | 2013-05-01 | 北京精密机电控制设备研究所 | Linear electromechanical static pressure servo mechanism |
CN105020144A (en) * | 2015-05-21 | 2015-11-04 | 新乡市夏烽电器有限公司 | Novel small-displacement composite oil production device |
CN105805024A (en) * | 2014-12-29 | 2016-07-27 | 新乡市夏烽电器有限公司 | An oil field deep well oil extraction device |
CN106801592A (en) * | 2016-12-23 | 2017-06-06 | 中国石油天然气股份有限公司 | Without bar closed loop oil extraction system |
WO2020093894A1 (en) * | 2018-11-10 | 2020-05-14 | 新乡市夏烽电器有限公司 | Novel pressurized water injection device for screw pump |
CN111734355A (en) * | 2020-06-29 | 2020-10-02 | 中国石油天然气股份有限公司 | Underground spiral type trapezoidal sealing pump oil extraction device driven by submersible motor and process |
-
2009
- 2009-05-22 CN CN2009200904072U patent/CN201461429U/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102287370A (en) * | 2011-07-11 | 2011-12-21 | 新乡市夏烽电器有限公司 | Screw pump type pressurizing water injection system |
CN103075392A (en) * | 2011-10-26 | 2013-05-01 | 北京精密机电控制设备研究所 | Linear electromechanical static pressure servo mechanism |
CN102927001A (en) * | 2012-11-02 | 2013-02-13 | 中国石油天然气股份有限公司 | Method by utilizing switch reluctance motor speed regulating system for screw pump oil extraction |
CN102927001B (en) * | 2012-11-02 | 2015-04-22 | 中国石油天然气股份有限公司 | Method by utilizing switch reluctance motor speed regulating system for screw pump oil extraction |
CN105805024A (en) * | 2014-12-29 | 2016-07-27 | 新乡市夏烽电器有限公司 | An oil field deep well oil extraction device |
CN105020144A (en) * | 2015-05-21 | 2015-11-04 | 新乡市夏烽电器有限公司 | Novel small-displacement composite oil production device |
CN106801592A (en) * | 2016-12-23 | 2017-06-06 | 中国石油天然气股份有限公司 | Without bar closed loop oil extraction system |
WO2020093894A1 (en) * | 2018-11-10 | 2020-05-14 | 新乡市夏烽电器有限公司 | Novel pressurized water injection device for screw pump |
CN111734355A (en) * | 2020-06-29 | 2020-10-02 | 中国石油天然气股份有限公司 | Underground spiral type trapezoidal sealing pump oil extraction device driven by submersible motor and process |
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Legal Events
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20100512 |
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CX01 | Expiry of patent term |