CN215979309U - Oil production system of submersible electric pump of linear motor driven by wind energy and solar energy independent micro-grid - Google Patents
Oil production system of submersible electric pump of linear motor driven by wind energy and solar energy independent micro-grid Download PDFInfo
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides a wind energy and solar energy independent micro-grid driving linear motor electric submersible pump oil production system which comprises a wind power generation system, a photovoltaic solar power generation board, a storage battery pack, a control unit, a plurality of inverters and a plurality of linear motor electric submersible pumps. The oil production system of the submersible electric pump of the linear motor driven by the wind energy and solar energy independent micro-grid solves the problem of insufficient electricity consumption in remote areas, greatly saves electricity consumption, improves working efficiency, and helps oil production work of remote oil wells better.
Description
Technical Field
The utility model relates to the technical field of petroleum machinery, in particular to an oil production system of a submersible electric pump of a linear motor driven by wind energy and solar energy independent micro-grids.
Background
For oil wells at remote places in oil fields and oil wells produced on ocean platforms, the problem of high construction cost of power grids or no power grids exists due to the remote places. Remote oil wells also often generate electricity by consuming fossil energy, which is environmentally damaging and expensive. Therefore, it is important to provide an environmentally friendly and efficient energy source. For this reason, it is necessary to provide environmental protection and sufficient energy in advance by designing wind-solar hybrid power generation. The design of the numerical control reciprocating type electric submersible pump greatly reduces the consumption of electric quantity, which provides possibility for high-strength oil extraction.
Wind and solar energy are clean and very abundant renewable energy sources. They are widely distributed, environmentally friendly and abundant for power generation. The remote oil well has abundant wind energy and solar energy resources, sufficient energy is effectively provided for the oil well through wind-solar hybrid power generation, and great convenience and advantages are achieved by partially replacing the existing fossil energy.
In the application No.: CN202020199052.7, the patent application relates to a new wind-solar hybrid off-line power generation driving block oil production system, which comprises a wind power generation module, a trough solar heat collection power generation module, a controller, an energy storage module, and an oil storage tank heating system, wherein the wind power generation module is connected with the controller through a first rectifier; the trough type solar heat collection power generation module comprises a trough type solar heat collection plate, a steam generator and a small steam turbine power generation system which are sequentially connected, and the power output end of the small steam turbine power generation system is connected with the controller through a second rectifier; the power input end of the energy storage module is connected with the controller, and the power output end of the energy storage module is sequentially connected with the inverter and the oil pumping equipment through the controller; the oil storage tank heating system comprises a heat exchanger and a direct-current auxiliary heating device, wherein an inlet of the heat exchanger is connected with a small-sized steam turbine power generation system, an outlet of the heat exchanger is connected with a steam generator after passing through a condenser, and an electric output end of an energy storage module is connected with an electric input end of the direct-current auxiliary heating device through a controller.
In the application No.: CN201811438199.0, the chinese patent application relates to a wind-solar hybrid power supply device for wellhead safety control system, comprising: the wind driven generator converts wind energy into electric energy to be output; the solar cell panel converts light energy into electric energy to be output by absorbing sunlight; the wind-solar hybrid controller is respectively connected with the wind driven generator and the solar panel through circuits; and the storage battery is respectively connected with the wind-solar complementary controller and the wellhead safety control system through circuits, and the wind-solar complementary controller controls the wind driven generator and/or the solar panel to charge or stop charging the storage battery according to the residual electric quantity of the storage battery, so that electric energy is always provided for the wellhead safety control system.
In the application No.: chinese patent application CN201710431865.7 relates to a power supply system for oil field, which comprises: the gas collecting device is used for collecting the associated natural gas during oil pumping of the oil well; the gas generator set is used for generating alternating current by taking the natural gas collected by the gas collecting device as a combustion object; the new energy power generation device is used for generating electric energy by adopting new energy; the diesel generating set is used for generating alternating current by taking diesel as a combustion object; the switching device comprises a first controllable switch assembly consisting of at least three controllable switches connected in parallel; and the first controllable switch component is used for controlling the load to be respectively connected with or disconnected from the power supply loop among the gas generator set, the new energy power generation device and the diesel generator set.
The prior art is greatly different from the oil extraction system, the technical problems which are required to be solved cannot be solved, and therefore the oil extraction system of the submersible electric pump of the linear motor driven by the wind energy and solar energy independent micro-grid is invented.
SUMMERY OF THE UTILITY MODEL
The utility model relates to the technical field of petroleum machinery, in particular to an oil extraction system of a wind-solar complementary independent micro-grid power generation driving linear motor electric submersible pump, which realizes the uninterrupted operation of the driving linear motor electric submersible pump.
The object of the utility model can be achieved by the following technical measures: the wind energy and solar energy independent micro-grid driven linear motor electric submersible pump oil production system comprises a wind power generation system, a photovoltaic solar power generation board, a storage battery, a control unit, a plurality of inverters and a plurality of linear motor electric submersible pumps, wherein the wind power generation system is connected with the control unit and converts wind energy into electric energy, and transmits the power to a control unit, the photovoltaic solar power generation panel is connected with the control unit to convert the solar energy into electric energy, and transmits the electric energy to a control unit which is connected with a storage battery pack and charges the storage battery pack by adopting the transmitted electric energy, the inverters are connected with the linear motor electric submersible pumps in a one-to-one correspondence mode, the inverters are connected with the storage battery pack through the control unit, and the direct current transmitted by the storage battery pack is converted into three-phase alternating current to be supplied to the plurality of linear motor electric submersible pumps.
The object of the utility model can be achieved by the following technical measures:
the wind power generation system comprises a permanent magnet variable-pitch wind driven generator and a rectifier, wherein the rectifier is connected with the permanent magnet variable-pitch wind driven generator and converts alternating current with unstable frequency and amplitude, which is generated by the permanent magnet variable-pitch wind driven generator, into stable direct current.
The oil extraction system of the submersible electric pump of the linear motor driven by the wind energy and solar energy independent micro-grid further comprises a plurality of linear motor submersible pump controllers, wherein the plurality of linear motor submersible pump controllers are connected with the plurality of linear motor submersible electric pumps in a one-to-one correspondence manner so as to control the oil pumping process of the plurality of linear motor submersible electric pumps.
The wind power generation system, the solar photovoltaic panel and the storage battery are positioned on the same side of the oil well mouth, and the permanent magnet variable-pitch wind driven generator, the solar photovoltaic panel, the storage battery and the linear motor submersible pump controller are respectively arranged from far to near by taking the well mouth as a reference point.
The permanent magnet variable-pitch wind driven generator is provided with a three-phase permanent magnet brushless alternating current generator, a 24V storage battery pack is adopted to drive a yaw direct current motor to realize yaw control through the drive of a worm gear and a worm, and an attack angle is changed along with the wind speed.
The solar photovoltaic panel adopts a flat single-shaft follow-up system, and the flat single-shaft follow-up design utilizes a worm and gear structure and a stepping motor to enable the solar photovoltaic panel to follow the direction of the sun.
The linear motor oil-submersible electric pump comprises an upper movable valve, a middle movable valve, a lower movable valve, a plunger, a linear motor rotor push rod and a slotted sieve tube, wherein the upper movable valve and the middle movable valve are fixed, the lower movable valve is a movable valve, a rotor of a linear motor is directly connected with the plunger through the linear motor rotor push rod, and the slotted sieve tube is arranged outside the linear motor rotor push rod.
The linear motor electric submersible pump also comprises an upper sucker rod, a fixed valve seat supporting joint, a valve seat and an upper valve seat, wherein an upper traveling valve is composed of the upper sucker rod, the fixed valve seat supporting joint, the valve seat, an upper movable valve and the upper valve seat from top to bottom, the upper sucker rod is connected with the fixed valve seat supporting joint, the fixed valve seat supporting joint is installed on the valve seat, and the upper movable valve is installed in the upper valve seat.
The linear motor electric submersible pump further comprises a middle valve seat, a plunger joint, a lower valve seat, a lower movable valve, a plunger valve cover, a thick-wall pump barrel connection and a coupling, wherein a middle cavity in which middle oil flows is formed by connecting the middle movable valve, the middle valve seat, the plunger joint, the lower valve seat, the lower movable valve, the plunger valve cover and the thick-wall pump barrel from top to bottom, and an upper sucker rod drives a fixed valve seat supporting joint to do reciprocating motion to enable the middle cavity to generate pressure difference so as to ensure that the oil can be output to a designated position on the ground.
The middle valve seat is provided with a middle movable valve, the upper end of the middle valve seat is connected with an upper valve seat provided with the upper movable valve, the upper movable valve and the upper valve seat form an oil liquid outflow end of a middle cavity, the upper end of the plunger is connected with the middle valve seat provided with the middle movable valve, the lower end of the plunger is provided with a plunger joint to form a closed cavity, the lower valve seat is internally provided with a lower movable valve, the upper end of the lower movable valve is connected with the plunger joint, the lower end of the lower movable valve is connected with the plunger valve cover and is an oil liquid inflow end of the middle cavity, the thick-wall pump cylinder is connected with the lower end of the thick-wall pump cylinder and is provided with a coupling, and the upper end of the thick-wall pump cylinder is connected with the lower valve seat.
The utility model relates to an oil production system of a linear motor submersible electric pump driven by a wind energy and solar energy independent micro-grid, which comprises an independent micro-grid consisting of a wind driven generator, a solar power generation board, an energy storage system, the linear motor submersible electric pump, a control system and the like. The system has the dual advantages of energy conservation and environmental protection, can be widely applied to oil mines with sufficient wind energy resources, and has important significance for energy-saving oil extraction of non-grid marginal oil fields and offshore platforms.
Wind-solar complementary independent micro-grid power generation driving linear motor electric submersible pump oil production system realizes driving linear motor electric submersible pump uninterrupted operation, wherein linear motor electric submersible pump adopts linear motor to directly drive special underground pump design, reduces by a wide margin relatively traditional pumping unit energy consumption, possesses the independent micro-grid power generation condition of implementation.
The utility model has the beneficial effects that: the wind energy and solar energy independent micro-grid driving linear motor electric submersible pump oil production system is applied to oil production of remote oil wells, the wind and light complementary power generation part in the system solves the situation of insufficient power consumption in remote areas, the electric submersible pump oil production system greatly saves power consumption, improves working efficiency and helps the remote oil wells to better perform oil production.
Drawings
Fig. 1 is a schematic structural diagram of an oil production system of an electric submersible pump of a linear motor driven by a wind energy and solar energy independent micro-grid;
FIG. 2 is a diagram of a structure of an oil-well pump dedicated for driving an electric submersible pump of a linear motor;
FIG. 3 is a ground underground layout diagram of an oil production system of an electric submersible pump of a linear motor driven by a wind energy and solar energy independent micro-grid;
in the figure: the device comprises an upper sucker rod 1, a fixed valve seat supporting connector 2, a valve seat 3, an upper movable valve 4, an upper valve seat 5, a middle movable valve 6, a middle valve seat 7, a plunger 8, a plunger connector 9, a lower valve seat 10, a lower movable valve 11, a plunger valve cover 12, a thick-wall pump barrel connection 13, a coupling 14, a linear motor rotor push rod 15, a slotted sieve tube 16, a linear motor submersible electric pump stator 17, a controller 18, an inverter 19, a linear motor submersible pump controller 20, a linear motor submersible electric pump 21, a storage battery pack 22, a solar photovoltaic panel 23, a rectifier 24 and a permanent magnet variable pitch wind driven generator 25.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the utility model as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.
The utility model relates to an oil production system of a linear motor electric submersible pump driven by a wind energy and solar energy independent micro-grid, which comprises a wind driven generator, a photovoltaic solar power generation board, an energy storage system, the linear motor electric submersible pump, a control system and the like. This system is through using small-size aerogenerator, solar photovoltaic power generation board and through energy storage system rational allocation, it realizes driving linear electric motor submersible pump uninterrupted duty to ensure wind-force and the independent microgrid electricity generation of photovoltaic, specifically be photovoltaic direct current through the controller, wind power generation output be the unstable alternating current that frequency and amplitude all are constantly changing, need become the direct current through the rectification earlier, charge for energy storage system, energy storage system passes through the dc-to-ac converter, become three-phase alternating current drive linear electric motor submersible pump, wherein energy storage system rational allocation should satisfy the operation of the linear electric motor submersible pump oil production system of a certain time.
For implementing the wind-solar complementary independent micro-grid power generation driving linear motor electric submersible pump oil production system, a special oil well pump is designed and developed, and the linear motor electric submersible pump adopts a design of a linear motor direct-drive special underground pump, so that the energy consumption is greatly reduced compared with that of a traditional oil pumping machine, is about one third of that of the traditional oil pumping machine, and has the condition of implementing independent micro-grid power generation.
The oil production system of the submersible electric pump of the linear motor comprises a power module of the linear motor and a special oil well pump, wherein the power module of the linear motor comprises a solar power generation system, a wind power generation system and an energy storage system (comprising a rectifier, a storage battery and accessory components thereof, a controller, an inverter and the like), the wind power generation system, the solar power generation system and the energy storage system are arranged from far to near from a wellhead, the electricity generated by the wind power generation system and the solar power generation system is converted by the energy storage system and then supplied to the oil well, the electricity is stored in the energy storage system when the electric energy supply of the oil well is sufficient, and the electricity is supplied to the oil field by the two power generation systems and the energy storage system when the electric energy supply of the oil field is insufficient; the special oil well pump consists of an upper oil pumping rod, a fixed valve seat supporting joint, a valve seat, an upper movable valve, an upper valve seat, a middle movable valve, a middle valve seat, a plunger joint, a lower valve seat, a lower movable valve, a plunger valve cover, a thick-wall pump cylinder connection, a coupling, a linear motor rotor push rod, a slot sieve tube and a linear motor submersible electric pump stator from top to bottom, wherein the special oil well pump is an improved oil well pump, the upper part is provided with 2 fixed valves, the lower part is provided with 1 movable valve, and the linear motor rotor drives the oil well pump to move up and down, so that oil extraction operation is realized. The linear motor is connected with the sucker rod by a slotted sieve tube. In the electric submersible pump system, a rotor of a linear motor is directly connected with a tubular pump plunger through a linear motor rotor push rod by the characteristic that the reciprocating motion of the linear motor is consistent with the motion direction of the tubular pump plunger, and the linear motor rotor is submerged into an underground oil layer. Then the linear motor drives the plunger of the oil pump to do periodic reciprocating motion, so as to lift the oil to the ground.
The wind-solar complementary independent micro-grid power generation driving linear motor submersible electric pump oil production system is arranged in the following mode: the solar power generation system, the wind power generation system and the energy storage system are positioned on the same side of an oil well mouth, and the permanent magnet variable-pitch wind driven generator, the solar photovoltaic panel, the storage battery and the submersible pump controller are respectively arranged from far to near by taking the well mouth as a reference point. The specific working process is as follows: through using small-size aerogenerator and solar photovoltaic power generation board reasonable effective configuration, ensure that wind power generation realizes driving linear electric motor submersible pump uninterrupted duty, specifically for the photovoltaic direct current passes through the controller, charges for energy storage system, and what wind power generation output is that frequency and amplitude are all constantly changing unstable alternating current, need pass through the rectification earlier and become the direct current, charge for energy storage system. The energy storage system is changed into a three-phase alternating current to drive the linear motor electric submersible pump through the inverter.
In the specific embodiment 1 to which the present invention is applied, fig. 1 is a schematic structural diagram of an oil production system of an electric submersible pump of a linear motor driven by a wind energy and solar energy independent microgrid, and the system is composed of a solar power generation system, a wind power generation system, an energy storage system (including a rectifier (24), a storage battery (22) and its accessory components, a controller (18), an inverter (19), etc.), an electric submersible pump of a linear motor (21), a control system, etc. The numerical control reciprocating type electric submersible pump driven by the linear motor is a direct execution component of an oil extraction system, and is an oil extraction machine which utilizes the electric submersible linear motor as an electric dragging device and directly drives the reciprocating type electric submersible pump to extract oil. The electric submersible pump (21) of the linear motor has low power consumption and is suitable for the low discharge capacity (generally less than 20 m)3And/d) oil well production, and is suitable for being matched with wind-solar complementary power generation due to less power consumption compared with the conventional oil pumping unit. The linear motor electric submersible pump system comprises an oil extraction wellhead, an armored cable, an oil pipe, a sand prevention facility and other components, and forms an underground oil extraction system together with the electric submersible pump. The utility model selects the numerical control reciprocating type submersible oil electric pump, which is characterized by direct drive, intermittent work, no starting current and online adjustment of stroke frequency according to liquid supply capacity.
The permanent magnet variable-pitch wind driven generator (25) generates electricity, alternating current with unstable frequency and amplitude is generated and needs to be converted into stable direct current through the rectifier (24), the solar photovoltaic panel (23) generates electricity into direct current, and the direct current are input into the controller (18). The controller (18) supplies power to the battery (22) and the inverter (19). The storage battery (22) outputs direct current, the direct current must be inverted through the inverter (19), electric energy is converted into constant-frequency (50HZ) stabilized three-phase alternating current required by a user, and the inverter (19) has the function of converting the direct current into the three-phase alternating current in a system, namely converting a direct current power supply into 380V alternating current for output.
In specific embodiment 2 to which the present invention is applied, fig. 2 is a structural diagram of an oil-well pump specially driven by a linear motor, and in order to improve the oil-well pump, the oil-well pump mainly includes an upper sucker rod (1), a fixed valve seat support joint (2), a valve seat (3), an upper movable valve (4), an upper valve seat (5), a middle movable valve (6), a middle valve seat (7), a plunger (8), a plunger joint (9), a lower valve seat (10), a lower movable valve (11), a plunger valve cover (12), a thick-wall pump cylinder connection (13), a coupling (14), a linear motor rotor push rod (15), a slotted screen pipe (16), a linear motor submersible electric pump stator (17), and other components. An upper movable valve is composed of an upper sucker rod (1), a fixed valve seat supporting joint (2), a valve seat (3), an upper movable valve (4) and an upper valve seat (5). The upper sucker rod (1) is connected with the fixed valve seat supporting joint (2), the fixed valve seat supporting joint (2) is arranged on the valve seat (3), and the upper movable valve (4) is arranged in the upper valve seat (5). The upper sucker rod (1) drives the fixed valve seat supporting joint (2) to do reciprocating motion, so that a middle cavity formed by the middle movable valve (6), the middle valve seat (7), the plunger (8), the plunger joint (9), the lower valve seat (10), the lower movable valve (11), the plunger valve cover (12) and the thick-wall pump barrel connection (13) generates pressure difference, and oil can be output to a designated position on the ground. The middle movable valve (6), the middle valve seat (7), the plunger (8), the plunger joint (9), the lower valve seat (10), the lower movable valve (11), the plunger valve cover (12) and the thick-wall pump cylinder connection (13) form a cavity in which middle oil flows. The middle valve seat (7) is provided with a middle movable valve (6), the upper end of the middle valve seat (7) is connected with an upper valve seat (5) provided with an upper movable valve (4), and the upper movable valve (4) and the upper valve seat (5) form an oil liquid outflow end of the middle cavity. The plunger (8) and the plunger joint (9) are main components of the middle cavity, the upper end of the plunger (8) is connected with a middle valve seat (7) provided with a middle movable valve (6), and the lower end of the plunger (8) is provided with the plunger joint (9) to form a closed cavity. A lower movable valve (11) is arranged in the lower valve seat (10), the upper end of the lower movable valve is connected with the plunger joint (9), and the lower end of the lower movable valve is connected with the plunger valve cover (12) and is an oil inflow end of the middle cavity. The lower end of the thick-wall pump cylinder connection (13) is provided with a coupling (14), and the upper end of the thick-wall pump cylinder connection is connected with the lower valve seat (10). The linear motor active cell push rod (15) is arranged inside the slotted screen pipe (16) and is connected with the linear motor active cell push rod (15), and the slotted screen pipe (16) is a direct connection part of the linear motor and the sucker rod. The linear motor rotor push rod (15) does periodic reciprocating motion to drive the linear motor rotor push rod (15) to do reciprocating motion in the vertical direction. The specific working process is as follows: the reciprocating motion of the linear motor is consistent with the motion direction of the tubular pump plunger, and the rotor of the linear motor is directly connected with the plunger (8) through a rotor push rod (15) of the linear motor and is submerged into an underground oil layer. Then the linear motor drives the plunger of the oil pump to do periodic reciprocating motion, so that the oil is lifted to the ground from the underground oil layer through the middle cavity. While a submersible pump controller (20) on the surface controls the whole pumping process and can effectively regulate the pumping process.
In a specific embodiment 3 to which the present invention is applied, fig. 3 is a ground underground layout diagram of an oil production system of an electric submersible pump of a linear motor driven by a wind energy and solar energy independent microgrid, and the specific layout manner is as follows: a permanent magnet variable-pitch wind driven generator (25), a solar photovoltaic panel (23), a storage battery pack (22) and an oil-submerged pump controller (20) are arranged on one side with a wellhead from far to near.
Referring to fig. 1 and 3, the submersible electric pump (21) of the linear motor is reasonably and effectively distributed to work through power generation by using a small wind driven generator and a solar power generation panel, the photovoltaic generator and the wind driven generator provide power for the submersible electric pump (21) through a photovoltaic and wind power generation system, and the rated discharge capacity of the submersible electric pump (21) is selected to be 20m according to most of corresponding oil well liquid production quantities3And d, selecting an oil well pump with the model of WFQYDB-44. The specific process is as follows: wind power in the air blows a wind wheel of the wind motor, the wind wheel rotates, and the wind generating set drives the low-speed permanent magnet variable-pitch synchronous generator to rotate, so that power generation is started. In the process of wind power generation, a yaw control system is required to adjust the rotation plane of the wind wheel blade and the air flow in real timeThe direction relative position enables the wind wheel to be aligned with the wind direction all the time when the wind wheel normally operates, so that the energy obtained by the wind turbine from the air is maximum, and the output power is maximum. The alternating current with unstable frequency and amplitude is emitted at the moment, and the unstable alternating current needs to be converted into stable direct current through a rectifier (24). When the wind power generation energy is sufficient, the electric energy provided by the wind driven generator is used as a power source, the wind driven generator charges the storage battery (22), and meanwhile, the direct current output by the storage battery (22) is converted into constant-frequency stable alternating current through the inverter (19), so that the electric submersible pump (14) is powered. When the electricity generated by wind power cannot meet the electricity consumption of the oil pumping unit, the system automatically switches circuits through the control of the system, at the moment, the electricity provided by the wind power generator is only used as part of power source, and the storage battery (22) is in a power supply state and provides energy for the submersible electric pump (21) of the linear motor. For light energy, the solar photovoltaic panel (23) is reasonably and effectively partitioned, one part is charged, and the other part is discharged to provide electric energy for the electric submersible pump (21). The light energy and the wind energy are mutually compensated to generate electricity together, so that the uninterrupted energy source transmission for oil wells of oil fields can be ensured for 24 hours, and effective and stable continuous operation can be carried out.
In order to improve the reliability and the power generation efficiency of the photovoltaic power station, a flat single-shaft follow-up system is adopted for photovoltaic power generation, the device is made into a follow-up photovoltaic device by utilizing a worm and gear structure and a stepping motor in the flat single-shaft follow-up design, the whole process can be tracked by the follow-up system, no shadow is shielded by adjacent systems, the tracking system has a function of returning automatically at night, a time control mode is adopted according to the running track of the sun, the device has the functions of protecting strong wind and strong snow, the safety performance is good, the network monitoring function is realized, the centralized control is realized, and the device is suitable for large power stations.
The wind power generation adopts a variable pitch wind driven generator, a three-phase permanent magnet brushless alternating current generator is configured, a 24V storage battery pack is adopted to drive a yaw direct current motor to realize yaw control through a worm gear, and an attack angle is changed along with the wind speed. The wind driven generator outputs unstable alternating current with constantly changing frequency and amplitude, and the alternating current needs to be rectified into direct current to charge an energy storage system.
In order to ensure that the oil well production operation keeps a continuous working state, the oil well production operation can work continuously for 24 hours every day (except for maintenance and repair conditions), so that strict requirements are imposed on a power supply system, and high stability needs to be maintained. From the specific working condition, the output power of the wind driven generator is changed along with the change of the wind speed, which can affect the smooth operation of the equipment, so that the conversion system is configured to ensure the stable operation of the system.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
Claims (10)
1. The wind energy and solar energy independent micro-grid driven linear motor electric submersible pump oil production system is characterized by comprising a wind power generation system, a photovoltaic solar power generation board, a storage battery, a control unit, a plurality of inverters and a plurality of linear motor electric submersible pumps, wherein the wind power generation system is connected with the control unit and converts wind energy into electric energy, and transmits the power to a control unit, the photovoltaic solar power generation panel is connected with the control unit to convert the solar energy into electric energy, and transmits the electric energy to a control unit which is connected with a storage battery pack and charges the storage battery pack by adopting the transmitted electric energy, the inverters are connected with the linear motor electric submersible pumps in a one-to-one correspondence mode, the inverters are connected with the storage battery pack through the control unit, and the direct current transmitted by the storage battery pack is converted into three-phase alternating current to be supplied to the plurality of linear motor electric submersible pumps.
2. The oil production system of the submersible electric pump of the linear motor driven by the wind energy and solar energy independent micro-grid is characterized by comprising a permanent magnet pitch-variable wind driven generator and a rectifier, wherein the rectifier is connected to the permanent magnet pitch-variable wind driven generator and converts alternating current with unstable frequency and amplitude generated by the permanent magnet pitch-variable wind driven generator into stable direct current.
3. The wind-energy and solar-energy independent micro-grid-driven linear motor electric-submersible pump oil production system according to claim 2, further comprising a plurality of linear motor electric-submersible pump controllers, wherein the plurality of linear motor electric-submersible pump controllers are connected with the plurality of linear motor electric-submersible pumps in a one-to-one correspondence manner so as to control an oil pumping process of the plurality of linear motor electric-submersible pumps.
4. The oil production system of the submersible electric pump of the linear motor driven by the wind energy and solar energy independent micro-grid is characterized in that the wind power generation system, the solar photovoltaic panel and the storage battery are located on the same side of an oil well head, and the permanent magnet variable pitch wind power generator, the solar photovoltaic panel, the storage battery and the submersible electric pump controller of the linear motor are respectively arranged from far to near by taking the well head as a reference point.
5. The oil extraction system of the submersible electric pump of the linear motor driven by the wind energy and solar energy independent micro-grid is characterized in that the permanent magnet pitch-variable wind driven generator is provided with a three-phase permanent magnet brushless alternating current generator, a 24V storage battery pack is adopted to drive a yaw direct current motor to realize yaw control through worm and gear drive, and an attack angle is changed along with wind speed.
6. The oil production system of the submersible electric pump of the linear motor driven by the wind energy and solar energy independent micro-grid is characterized in that the solar photovoltaic panel adopts a flat single-shaft follow-up system, and the flat single-shaft follow-up design utilizes a worm and gear structure and a stepping motor to enable the solar photovoltaic panel to follow the direction of the sun.
7. The oil extraction system of the linear motor submersible electric pump driven by the wind energy and solar energy independent micro-grid is characterized in that the linear motor submersible electric pump comprises an upper movable valve, a middle movable valve, a lower movable valve, a plunger, a linear motor rotor push rod and a slotted sieve tube, wherein the upper movable valve and the middle movable valve are fixed, the lower movable valve is a movable valve, a rotor of the linear motor is directly connected with the plunger through the linear motor rotor push rod, and the slotted sieve tube is arranged outside the linear motor rotor push rod.
8. The oil extraction system of the wind-energy solar-energy independent micro-grid-driven linear motor electric submersible pump according to claim 7, characterized in that the linear motor electric submersible pump further comprises an upper sucker rod, a fixed valve seat support joint, a valve seat and an upper valve seat, wherein an upper traveling valve is composed of the upper sucker rod, the fixed valve seat support joint, the valve seat, an upper movable valve and the upper valve seat from top to bottom, the upper sucker rod is connected with the fixed valve seat support joint, the fixed valve seat support joint is installed on the valve seat, and the upper movable valve is installed in the upper valve seat.
9. The oil extraction system of the linear motor electric submersible pump driven by the wind energy and solar energy independent micro-grid is characterized in that the linear motor electric submersible pump further comprises a middle valve seat, a plunger joint, a lower valve seat, a lower movable valve, a plunger valve cover, a thick-wall pump cylinder connection and a coupling, an intermediate cavity in which intermediate oil flows is formed by connecting the middle movable valve, the middle valve seat, the plunger joint, the lower valve seat, the lower movable valve, the plunger valve cover and the thick-wall pump cylinder from top to bottom, and the upper sucker rod drives the fixed valve seat support joint to reciprocate so that the intermediate cavity generates pressure difference and further ensures that the oil can be output to a specified position on the ground.
10. The oil production system of the submersible electric pump with the linear motor driven by the wind energy and the solar energy independent micro-grid is characterized in that a middle movable valve is mounted on a middle valve seat, the upper end of the middle valve seat is connected with an upper valve seat mounted with the upper movable valve, the upper movable valve and the upper valve seat form an oil outlet end of a middle cavity, the upper end of a plunger is connected with the middle valve seat mounted with the middle movable valve, the lower end of the plunger is provided with a plunger connector to form a closed cavity, a lower movable valve is mounted in a lower valve seat, the upper end of the lower valve seat is connected with the plunger connector, the lower end of the lower valve seat is connected with a plunger valve cover and is an oil inlet end of the middle cavity, a thick-wall pump cylinder is connected with the lower end of the lower valve seat, and the upper end of the thick-wall pump cylinder is connected with the lower valve seat.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120092863.1U CN215979309U (en) | 2021-01-13 | 2021-01-13 | Oil production system of submersible electric pump of linear motor driven by wind energy and solar energy independent micro-grid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120092863.1U CN215979309U (en) | 2021-01-13 | 2021-01-13 | Oil production system of submersible electric pump of linear motor driven by wind energy and solar energy independent micro-grid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718528A (en) * | 2022-04-10 | 2022-07-08 | 大庆岩玉丰达石油科技有限公司 | Carbon-free lifting oil storage intelligent oil extraction and monitoring system |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718528A (en) * | 2022-04-10 | 2022-07-08 | 大庆岩玉丰达石油科技有限公司 | Carbon-free lifting oil storage intelligent oil extraction and monitoring system |
| CN114718528B (en) * | 2022-04-10 | 2024-03-15 | 大庆岩玉丰达石油科技有限公司 | Carbon-free lifting oil storage intelligent oil extraction and monitoring system |
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