CN103437939B - A kind of electricity generating device for underground sucker rod - Google Patents
A kind of electricity generating device for underground sucker rod Download PDFInfo
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- CN103437939B CN103437939B CN201310399049.4A CN201310399049A CN103437939B CN 103437939 B CN103437939 B CN 103437939B CN 201310399049 A CN201310399049 A CN 201310399049A CN 103437939 B CN103437939 B CN 103437939B
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- sucker rod
- impeller
- rectification body
- switching mechanism
- transmission switching
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Abstract
The invention belongs to metrological testing technology field, relate to a kind of underground sucker rod electricity generating device, can be used as the Power Supply Assembly that underground sucker rod force-bearing situation is measured; It is made up of transmission switching mechanism, impeller, rectification body and small generator, transmission switching mechanism, impeller and mechanism that small generator forms are installed in rectification body, the input shaft of transmission switching mechanism installs impeller, output shaft lower end is connected with small generator rotating shaft by magnetic coupler, rectification body upper and lower end all has screw thread, connecting with pumping rod or be connected with measuring device as its Power Supply Assembly; Constantly stir when device utilizes sucker rod to work fluid mixture as generator power source, saved the energy, reduced costs, and met the long-term of underground sucker rod and persistency need for electricity.
Description
Technical field
The invention belongs to metrological testing technology field, relate to a kind of underground sucker rod electricity generating device, this device can be used as the Power Supply Assembly that underground sucker rod force-bearing situation is measured.
Background technique
In current petroleum production engineering, have bar oil recovery well in mechanical oil recovery proportion up to more than 90%, having in rod recovering system, flexible, elongated sucker rod, it is connected to walking beam drive system with dark at the oil well pump of nearly km to thousands of meters, being responsible for the transmission of motion and energy, is the critical component in this system.Along with social production is to the continuous growth of petroleum resources demand, the development of exploration and computer processing technology, petroleum production has turned to and has adopted, survey more difficult land and deep-sea, there is the directed deep-well deeply reaching more than 6,000 meter, and the sucker rod motion of this oil well, stressed more complicated more than shallow-layer straight well, directly cause the extrusion friction of sucker rod and oil pipe more violent, moment of flexure increases, the tension and compression average stress of bearing constantly increases, the probability that sucker rod breaks down increases greatly, therefore need to carry out comprehensively to the working condition of underground sucker rod, long-time monitoring.Current downhole bar surveying has developed into from stored type measurement and has measured with wireless transmission, and device generally all needs to carry out long-time continuous measurement in down-hole, is limited by underground power supply used restriction, often function and power consumption is compromised and consider during apparatus design; " downhole stored formula rod tube parametric detector " (patent No.: ZL 200420024926.6), devise one and can detect sucker rod axial force and the isoparametric measuring device of moment of torsion, be limited to the restriction of device inner space, be difficult to select large volume high capacity cell, the underground work time of device is only three months." a kind of device for measuring radial pressure of underground sucker rod " (application number: ZL 201110236526.6) can measure the radial force causing sucker rod partial wear, in order to extend the measuring device underground work time, artificer has carried out Design of power saving to device, but be limited to the capacity of battery, device down-hole stream time is less than half a year, in order to allow device work on, must oil producing operation be stopped, taking out measuring device from thousands of meters of down-holes and changing battery; Reliable and stable power supply has become the key issue of restriction underground sucker rod correlation meter.
At present about the power supply of sucker rod stress measuring device all adopts large-capacity battery, due to down-hole narrow space, be difficult to the large volume battery adopting high power capacity; Depending on measuring device power consumption, current sucker rod underground survey device stream time is commonly about 200h, and measuring device down-hole continuous operation with wireless real-time transmission data is shorter! In order to make underground survey device continuous firing, ensure pumping rod safe, oil recovery workman, when measuring device electric power is not enough, has to stop oil producing operation, takes out the sucker rod reaching thousands of meters from down-hole, again to change the outfit new battery to device, this process generally can cause oil well to stop production 2 ~ 3 days.The power pack of sucker rod mechanical meaurement and detection device has become the bottleneck restricting it and develop, if can there be a set of power generating equipment for underground sucker rod, will reduce and thisly nonproductively stop well operations, ensure pumping rod safe, improve oil producing operation efficiency.
Have with brill turbogenerator about down-hole electric generating apparatus, utilize during rod boring operation and rotate this feature along a direction, closing on drill bit position installation turbogenerator, utilizing drilling rod and the stirring of boring between liquid to drive turbine rotation, and then make generator rotation.Owing to being along a direction uniform rotation all the time during the relatively large and drilling rod operation of drilling well size, so be applicable to installing turbogenerator, but be difficult to directly by this power facility for underground sucker rod, first space is little, sucker rod is contained in oil pipe, and oil pipe inside holds maximum diameter and is no more than 55mm; Sucker rod is that regularity pumps in operation process in addition, can not say that power directly passes to generator.Therefore now a set of electricity generating device that can meet underground sucker rod measurement demand is not also had.
Summary of the invention
Technology of the present invention is dealt with problems and is: meet existing well lower sucker rod measuring equipment power demands, provide a kind of sucker rod down-hole electric generating apparatus, this device volume is little, structure is simple, meet the need for electricity of down-hole low-power measurement equipment.
Technological scheme of the present invention is: a kind of electricity generating device for underground sucker rod, is made up of transmission switching mechanism 22, impeller 21, rectification body 3 and small generator 23.The position of each constituent element and annexation by: transmission switching mechanism 22, impeller 21 and small generator 23 are formed mechanism and are installed in rectification body 3, the input shaft 2201 of transmission switching mechanism 22 is connected with impeller spindle, output shaft 2202 lower end is connected with small generator 23 rotating shaft by magnetic coupler 24, rectification body 3 upper and lower end all has screw thread, connecting with pumping rod, as its Power Supply Assembly, during the motion of sucker rod upstroke, fluid mixture is by extruding suddenly, pod apertures 301 is flowed into along rectification body 3 one end outer wall, the fluid mixed flow impeller 21 accelerated is rotated, when sucker rod is in down stroke, accelerate fluid mixed flow can impeller 21 along with upstroke phase counter-rotation, due to the effect of switching mechanism 1, no matter impeller drives transmission switching mechanism input shaft 2201 to rotate along clockwise or inhour, the torque direction transmitted at its output shaft 2202 remains a direction, and then generator rotates generating along same direction in the whole working procedure of sucker rod, ensure that the stable of output power.
Described transmission switching mechanism 22, have commutation and regulate input output speed ratio function, by four spur gears 2203,2204,2205 and 2209, independent disk 2206 and 2207, input shaft 2201 and output shaft 2202 form.The angular velocity of the output shaft 2202 of mechanism is directly proportional to the angular velocity of input shaft 2201, and input shaft 2201 drives spur gear 2203, and the face width of spur gear 2203 is approximately mounted in the twice of the spur gear 2204 and 2209 on output shaft 2202; Spur gear 2203 is meshed with idle wheel 2205 and spur gear 2204, and idle wheel 2205 is meshed with spur gear 2209; Two unidirectional independent disks 2206 and 2207 can drive output shaft 2202 to rotate respectively; When input shaft 2201 rotates along different direction, the disk driving output shaft 2202 to rotate is different, and the effect of generation is that output shaft 2202 is rotated along a direction all the time.
Described impeller 21, be in, the fluid turbulence energy of low density is converted to the power mechanism of rotating mechanical energy, be made up of stator and main shaft.When sucker rod carries out upstroke or down stroke motion, be extruded from the fluid mixture between oil pipe and sucker rod, the cavity 302 of rectification body 3 is introduced through pod apertures 301 with certain speed and direction, impact stator, impeller 21 rotates, and the sucker rod water stirred that moves up and down can be converted to the mechanical energy of rotation; During the upper and lower stroke movement of sucker rod, the sense of rotation of impeller is just contrary.
Described rectification body 3 is spindle, and centre is cavity 302, and upper and lower two ends are internal thread, and for connecting with pumping rod, rectification body about 3 spindle face has pod apertures 301 respectively; Rectification body 3 maximum outside diameter is larger than sucker rod, less than pipe aperture, when sucker rod moves at up-down stroke, be full of and increase large diameter extruding at the fluid mixture of oil pipe suddenly by rectification body 3, form impingement flow, enter in rectification body 3 by pod apertures 301, impact impeller 21 to move, drive small power generation, 4 work, last fluid mixture flows out from the other end pod apertures 301; The fusiform structure of rectification body 3 ensures from the fluid mixed flow between oil pipe and beam hanger with less fluid loss, evenly, introduce symmetrically in pod apertures 301, make the flow action suffered by all pod apertures 301 even, and then ensure uniform force between impeller all blades and produce certain rotating amount, meet the demand of impeller 21; Pod apertures 301 has two groups, be distributed on two spindle faces of rectification body 3, and be uniformly distributed in spindle face, the fluid mixed flow of outer for rectification body 3 extruding is introduced in cavity with certain speed and direction, regulate the flow entered in chamber, ensure that impeller 21 has good hydraulic characteristic; When sucker rod carries out upstroke motion, fluid mixed flow flows in rectification body 3 chamber from one end pod apertures 301, impeller 21 rotates, rotate through transmission switching mechanism 22 and then drive electrical generators 4 and produce electric energy, the fluid of flows decrease flows through the other end pod apertures 301 and flows out in rectification body 3 chamber, and during down stroke motion, the pod apertures 301 of inflow becomes outflow, and the pod apertures 301 originally flowed out becomes inflow, other is similar.
Described small generator 23, for three-phase permanent synchronous generator, the input of its moment of torsion derives from transmission switching mechanism 22, magnetic coupler 24 is adopted to connect between them, transmitting torque is carried out by the interaction in magnetic field, this Placement does not need to design sealing configuration, thus avoids the leakage problem that High Temperature High Pressure high humidity environment issues motor sealing, ensures that electricity generating device works continually and steadily in down-hole.
Advantage of the present invention is:
Device utilizes sucker rod up-down stroke to move and constantly stirs surging of fluid mixture can be power source, utilizes liquid kinetic energy power generation, produces electric energy and has chronicity and persistency, meet the long-term need for electricity of underground survey equipment; Relatively and large-capacity battery, present invention reduces equipment cost, saved the energy, environmentally safe.
Accompanying drawing explanation
Fig. 1 is electricity generating device overall schematic;
Fig. 2 internal component;
Fig. 3 is transmission switching mechanism;
The local of Fig. 4 direction mechanism one is formed;
Fig. 5 direction mechanism one local forms sectional view;
Fig. 6 independence disk;
Fig. 7 direction mechanism one is formed;
Fig. 8 direction mechanism two is formed;
Fig. 9 impeller;
Figure 10 is rectification body.
In figure, symbol description is as follows:
1-sucker rod; 2-internal component; 3-rectification body
21-impeller; 22-transmission switching mechanism; 23-small generator; 24-magnetic coupler
2201-input shaft; 2202-output shaft; 2203-spur gear; 2204-spur gear; 2205-inertia spur gear; 2206-independence disk; 2207 independent disks; 2208-pin; 2209-spur gear; 22010-pin; 22011-pin; 22012-pin; 220901-cotter way; 220902-cotter way; 220903-spring; 220904-spring
301-pod apertures; 302-cavity
Embodiment
Below in conjunction with accompanying drawing, technological scheme of the present invention is described in detail:
For an electricity generating device for underground sucker rod, be made up of transmission switching mechanism 22, impeller 21, rectification body 3 and small generator 23.As shown in Figure 1, transmission switching mechanism 22, impeller 21 and small generator 23 form mechanism and be installed in rectification body 3, the input shaft 2201 of transmission switching mechanism 22 is connected with impeller spindle, output shaft 2202 lower end is connected with small generator 23 rotating shaft by magnetic coupler 24, rectification body 3 upper and lower end all has screw thread, connecting with pumping rod or measuring device, as its Power Supply Assembly, during the motion of sucker rod upstroke, fluid mixture is by extruding suddenly, pod apertures 301 is flowed into along rectification body 3 one end outer wall, the fluid mixed flow impeller 21 accelerated is rotated, when sucker rod is in down stroke, accelerate fluid mixed flow can impeller 21 along with upstroke phase counter-rotation, due to the effect of switching mechanism 1, no matter impeller drives transmission switching mechanism input shaft 2201 to rotate along clockwise or inhour, the torque direction transmitted at its output shaft 2202 remains a direction, and then generator rotates generating along same direction in the whole working procedure of sucker rod, ensure that the stable of output power.
Described transmission switching mechanism, has commutation and regulates input output speed ratio function, by four spur gears 2203,2204,2205 and 2209, independent disk 2206 and 2207, four pins 2208 and draught spring, input shaft 2201 and output shaft 2202 form, as shown in Figure 3.The angular velocity of the output shaft 2202 of mechanism is directly proportional to the angular velocity of input shaft 2201, and input shaft 2201 drives spur gear 2203, and the facewidth of spur gear 2203 is approximately mounted in more than the twice of spur gear 2209 on output shaft 2202 and spur gear 2204.Four spur gears have identical modulus, form three groups of engagement-spur gears 2203 and spur gear 2204, spur gear 2203 and idle wheel 2205 and idle wheel 2205 and spur gear 2209 when input shaft 2201 rotates.Input shaft 2201 and gear 2203 are for being fixedly connected with, output shaft 2202 is flexibly connected with spur gear 2209 and spur gear 2204-and axle 102 produces relative rotation with gear 2209 and gear 2204, spur gear 2209 and spur gear 2204 end face have two grooves respectively, the width of groove and pin similar diameters, for installing pin, for spur gear 2209, it there are cotter way 220901 and cotter way 220902, pin 22010 and pin 2208 are installed in groove respectively, structure as shown in Figure 3, wall one end that spring 220903 one end connects cotter way 220901 connects pin 22010, in like manner spring 220904 one end connects wall one end connection pin 2208 of cotter way 220902, like this under the tension and compression effect of spring, pin 22010 and pin 2208 move in groove, structure as shown in Figure 5, independent disc structure as shown in Figure 6, it has two V-notchs, V-notch is while be connected with independent disk sideline with smooth circular arc, another side is that Non-smooth surface connects, for the mechanism that independent disk 2206 and spur gear 2209 combine, as shown in Figure 7, spur gear 2209 is close to by independent disk 2206 groove end face, and be fixedly connected with output shaft 2, pin 8 and pin 10 are stuck in two indentation, there of independent disk 6, like this when spur gear 2209 rotates along direction shown in Fig. 7 arrow, spring 220903 and spring 220904 Tensile respectively, haul pin 2208 and pin 22010 makes it to skid off along Non-smooth surface fillet and to be stuck in V-shaped groove, and then drive independent rotating disk 2206 to rotate along a direction, namely spur gear 2209 can only make output shaft 2202 rotate along direction shown in Fig. 7 arrow, otherwise when spur gear 2209 is along counter-rotation shown in Fig. 7 arrow, pin 2208 and pin 22010 can skid off along being smoothly connected limit, and then dally around independent disk 2206, the export structure that independent disk 2207 and spur gear 2204 form as shown in Figure 8, spur gear 2204 can only drive output shaft 2202 to rotate along Fig. 7 arrow direction, axle 2202 outbound course that the export structure that independent like this disk 2207 and spur gear 2204, independent disk 2206 and spur gear 2209 form produces is just identical, and they can not produce output simultaneously, when input shaft 2201 rotates along the direction shown in arrow in Fig. 3, because spur gear 2203 is fixedly connected with axle 2201, therefore also rotate along the direction of arrow, the spur gear 2204 of outer gearing is along arrow opposite spin so with it, and dally around independent disk 2207, spur gear 2209 rotates along the direction of arrow, drives independent rotating disk 2206 to rotate in the direction of the arrow with output shaft 2202, when input shaft 2201 is along opposite spin shown in arrow in Fig. 3, the spur gear 2204 of at this moment outer gearing with it rotates along the direction of arrow, and drive independent disk 2207 to rotate in the direction of the arrow with output shaft 2202, spur gear 2209 along arrow opposite spin, and dallies around independent disk 2206, so no matter how input shaft 2201 veer changes, and output shaft 2202 all the time time to rotate along the direction of arrow and to export.
As shown in Figure 9, described impeller 21, be in, the fluid turbulence energy of low density is converted to the power mechanism of rotating mechanical energy, be made up of stator and main shaft.When sucker rod carries out upstroke or down stroke motion, be extruded from the fluid mixture between oil pipe and sucker rod, the cavity 302 of rectification body 3 is introduced through pod apertures 301 with certain speed and direction, impact stator, impeller rotates, and then complete transformation of energy, the sucker rod water stirred that moves up and down can be converted to the mechanical energy of rotation.During the upper and lower stroke movement of sucker rod, the sense of rotation of impeller is just contrary.
As shown in Figure 10, described rectification body 3 is spindle, and centre is cavity 302, and upper and lower two ends are internal thread, and rectification body about 3 spindle face has pod apertures 301 respectively, and it has the effect of rectification and protection interior arrangement; Rectification body 3 maximum outside diameter is larger than sucker rod, less than pipe aperture, when sucker rod moves at up-down stroke, be full of and increase large diameter extruding at the fluid mixture of oil pipe suddenly by rectification body 3, form impingement flow, enter in rectification body 3 by pod apertures 301, impact impeller motion, drive small generator 23 to work, last fluid mixture flows out from the other end pod apertures 301; The fusiform structure of rectification body 3 ensures from the fluid mixture between oil pipe and beam hanger with less fluid loss, evenly, introduce symmetrically in pod apertures 301, make the flow action suffered by all pod apertures 301 even, and then ensure uniform force between impeller all blades and produce certain rotating amount, meet the demand of impeller; Pod apertures 301 has two groups, be distributed on two spindle faces of rectification body 3, and be uniformly distributed in spindle face, the fluid mixed flow of outer for rectification body 3 extruding is introduced in cavity 302 with certain speed and direction, regulate the flow entering in chamber 302, ensure that impeller has good hydraulic characteristic; When sucker rod carries out upstroke motion, fluid mixed flow flows in the chamber 302 of rectification body 3 from one end pod apertures 301, impeller rotates, rotate through transmission switching mechanism and then drive electrical generators 4 and produce electric energy, the fluid of flows decrease flows through the other end pod apertures 301 and flows out in rectification body 3 chamber, and during down stroke motion, the pod apertures 301 of inflow becomes outflow, and the pod apertures 301 originally flowed out becomes inflow, other is similar.
Described small generator 23, for three-phase permanent synchronous generator, its moment of torsion input source and transmission switching mechanism, magnetic coupler 24 is adopted to connect between them, transmitting torque is carried out by the interaction in magnetic field, this Placement does not need to design sealing configuration, thus avoids the leakage problem that High Temperature High Pressure high humidity environment issues motor sealing, ensures that electricity generating device works continually and steadily in down-hole.
The critical component that the invention described above impeller 21 used transforms as generator energy, have that size is little, the feature of anti-abrasion, high pressure, its blade is all by after steel plate Linear cut, extrusion moulding, then be welded on main shaft, require that assembly error controls within 0.5mm, weld seam is fine and close smooth, reduce them and make fluid in impeller, produce extra impact loss and frictional loss; Rectification body 3 adopts spring steel that is corrosion resistant, stable performance; The spur gear material selection 20CRMnTi of transmission switching mechanism 22, require to carry out carburizing, Quenching Treatment, corrosion resistant 0Cr18Ni9 shaped steel selected by independent disk 2206 and 2207; Three-phase permanent synchronous generator and magnetic coupler 24 are mature equipment, can choose on demand.
Claims (1)
1., for an electricity generating device for underground sucker rod, comprise transmission switching mechanism [22], impeller [21], rectification body [3] and small generator [23], it is characterized in that:
(1) transmission switching mechanism [22], impeller [21] and small generator [23] are installed in rectification body [3] chamber, the input shaft [2201] of transmission switching mechanism [22] installs impeller [21], output shaft [2202] lower end is connected with small generator [23] rotating shaft by magnetic coupler [24], rectification body [3] upper and lower end all has screw thread, and connecting with pumping rod [1] is as its Power Supply Assembly;
(2) a set of transmission switching mechanism [22], be made up of four spur gears, two independent disks, four pins, four draught springs, input shaft [2201] and output shafts [2202], there is commutation and regulate input output speed ratio function, no matter input shaft [2201] torque along where to, output shaft [2202] direction is constant;
(3) impellers [21], are made up of stator and main shaft, be in, the fluid turbulence energy of low density is converted to the power mechanism of rotating mechanical energy; When sucker rod [1] carries out upstroke or down stroke motion, be extruded from the fluid mixture between oil pipe and sucker rod [1], the cavity of rectification body [3] is introduced through pod apertures [301] with certain speed and direction, impact stator, impeller [21] rotates, and then complete transformation of energy, sucker rod [1] water stirred that moves up and down can be converted to the mechanical energy of rotation;
(4) rectification bodies [3], have the effect of rectification and protection interior arrangement, it is similar to spindle, and centre is cavity [302], and upper and lower two ends are internal thread, and rectification body [3] has pod apertures [301] in spindle face up and down respectively; Its cavity is for installing transmission switching mechanism [22], impeller [21] and small generator [23], and two ends screw thread is used for connecting with pumping rod [1]; Rectification body [3] maximum outside diameter is larger than sucker rod [1], less than pipe aperture, when sucker rod [1] moves at up-down stroke, be full of and increase large diameter extruding at the fluid mixture of oil pipe suddenly by rectification body [3], form impingement flow, enter in rectification body [3] through pod apertures [301], impact impeller motion, drive small generator [23] work, last fluid mixture flows out from the other end pod apertures [301];
(5) small generators [23], it is three-phase permanent synchronous generator, and these parts are that mature equipment can directly type selecting be bought; The input of small generator [23] moment of torsion derives from transmission switching mechanism [22], magnetic coupler [24] is adopted to connect between them, carry out transmitting torque by the interaction in magnetic field, this Placement does not need to design sealing configuration, avoids fluid and penetrates into motor internal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310399049.4A CN103437939B (en) | 2013-09-05 | 2013-09-05 | A kind of electricity generating device for underground sucker rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310399049.4A CN103437939B (en) | 2013-09-05 | 2013-09-05 | A kind of electricity generating device for underground sucker rod |
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| Publication Number | Publication Date |
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| CN103437939A CN103437939A (en) | 2013-12-11 |
| CN103437939B true CN103437939B (en) | 2015-08-05 |
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| CN201310399049.4A Expired - Fee Related CN103437939B (en) | 2013-09-05 | 2013-09-05 | A kind of electricity generating device for underground sucker rod |
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| CN113765330A (en) * | 2021-08-09 | 2021-12-07 | 自然资源部第三海洋研究所 | Deep sea motor based on magnetic coupling transmission and transmission method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2505611Y (en) * | 2001-06-20 | 2002-08-14 | 魏玄仓 | Wave energy switching mechanism |
| CN101725338A (en) * | 2008-10-15 | 2010-06-09 | 中国石化集团胜利石油管理局钻井工艺研究院 | Underground generation device |
| CN102251908A (en) * | 2011-06-07 | 2011-11-23 | 中国石油天然气股份有限公司 | Underground special water wheel generating device for oilfield oil-water well |
| CN102306947A (en) * | 2011-09-15 | 2012-01-04 | 中国石油天然气股份有限公司 | Underground self-charging power supply |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0422766A (en) * | 1990-05-17 | 1992-01-27 | Sekiyu Kodan | Turbine generator with speed control mechanism |
| CA2355606A1 (en) * | 1998-12-15 | 2000-06-22 | Alliedsignal Inc. | A fluid-driven alternator having an internal impeller |
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2013
- 2013-09-05 CN CN201310399049.4A patent/CN103437939B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2505611Y (en) * | 2001-06-20 | 2002-08-14 | 魏玄仓 | Wave energy switching mechanism |
| CN101725338A (en) * | 2008-10-15 | 2010-06-09 | 中国石化集团胜利石油管理局钻井工艺研究院 | Underground generation device |
| CN102251908A (en) * | 2011-06-07 | 2011-11-23 | 中国石油天然气股份有限公司 | Underground special water wheel generating device for oilfield oil-water well |
| CN102306947A (en) * | 2011-09-15 | 2012-01-04 | 中国石油天然气股份有限公司 | Underground self-charging power supply |
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