CN112600374B - Synchronous rotation type blade angle adjusting device - Google Patents
Synchronous rotation type blade angle adjusting device Download PDFInfo
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- CN112600374B CN112600374B CN202011480212.6A CN202011480212A CN112600374B CN 112600374 B CN112600374 B CN 112600374B CN 202011480212 A CN202011480212 A CN 202011480212A CN 112600374 B CN112600374 B CN 112600374B
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- stator
- rotating shaft
- hydraulic cylinder
- pump station
- lead
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a synchronous rotation type blade angle adjusting device, wherein a main stator and an auxiliary stator are fixedly arranged on the bottom surface of a machine shell, a main rotor and an auxiliary rotor which are matched with the main stator and the auxiliary stator are fixedly arranged on a rotating shaft, a hydraulic pump station and a hydraulic cylinder are arranged inside the rotating shaft, a high-pressure oil port P of the hydraulic pump station is communicated with an upper cavity pipeline B of the hydraulic cylinder, an oil outlet T of the hydraulic pump station is communicated with a lower cavity pipeline A of the hydraulic cylinder, a controller is arranged outside the machine shell and is electrically connected with the main stator through a lead, the controller is electrically connected with the auxiliary stator through a lead, the main rotor is electrically connected with the hydraulic pump station through a lead, the auxiliary rotor is electrically connected with an electromagnetic reversing valve through a lead, the rotating shaft in the invention is arranged inside the machine shell, and the internal and external installation of a submersible motor and the submersible motor are realized through a mechanical seal and a static seal ring, The external environment is isolated, and the blade angle adjusting device can be used in any external environment.
Description
Technical Field
The invention belongs to the technical field of submersible motors, and particularly relates to a synchronous rotation type blade angle adjusting device.
Background
In engineering application, changing the angle of the blade is a way to change the performance parameters of the device, and in many cases, the device cannot be stopped to adjust the blade, or the blade is inconvenient to adjust manually, and the blade needs to be continuously adjusted during operation to set the parameters of the device. The automatic blade angle adjusting mode mainly comprises a mechanical mode and a hydraulic mode. When the blades are adjusted in the rotating process, the mechanical type is easy to have thrust bearing faults, and the reliability is not high; the hydraulic high-pressure oil is difficult to seal dynamically and is easy to cause oil leakage pollution.
At present, a built-in synchronous hydraulic regulator is available in the market, a hydraulic system is arranged in a rotating shaft and moves along with the shaft, the hydraulic device is externally supplied with power and control instructions through an electric brush, but the electric brush needs to be periodically stopped to replace the electric brush, and the electric brush is not suitable for a non-air external environment.
Disclosure of Invention
The present invention is directed to a synchronous rotation type blade angle adjusting device to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
the synchronous rotation type blade angle adjusting device comprises a machine shell and a rotating shaft, wherein a main stator and an auxiliary stator are fixedly arranged on the bottom surface of the machine shell, a main rotor and an auxiliary rotor which are matched with the main stator and the auxiliary stator are fixedly arranged on the rotating shaft, a hydraulic pump station and a hydraulic cylinder are arranged inside the rotating shaft, a high-pressure oil port P of the hydraulic pump station is communicated with an upper cavity pipeline B of the hydraulic cylinder, an oil outlet T of the hydraulic pump station is communicated with a lower cavity pipeline A of the hydraulic cylinder, an electromagnetic reversing valve is further arranged inside the rotating shaft, and the electromagnetic reversing valve is electrically connected with the hydraulic pump station;
a controller is arranged outside the shell, the controller is electrically connected with the main stator through a lead, the controller is electrically connected with the auxiliary stator through a lead, the main rotor is electrically connected with the hydraulic pump station through a lead, and the auxiliary rotor is electrically connected with the electromagnetic directional valve through a lead;
one end of a push rod of the hydraulic cylinder is connected with the blade actuating mechanism through a flange.
As a still further scheme of the invention: the inside of rotation axis is provided with displacement signal generator, displacement signal generator sets up the one end at the pneumatic cylinder push rod, set up the notch of displacement signal generator installation on the rotation axis, displacement signal generator's output sets up the outside at the rotation axis through the notch, just the top that is located the rotation axis notch on the bottom surface of casing is provided with the sensor with displacement signal generator looks adaptation, the sensor passes through the wire electricity with the controller and is connected.
As a still further scheme of the invention: the shell is provided with a guide groove for a lead to pass through, and the guide groove is positioned between the main stator and the auxiliary stator on the shell.
As a still further scheme of the invention: and a guide hole for a lead to pass through is formed in the surface of the rotating shaft and between the main rotor and the auxiliary rotor.
As a still further scheme of the invention: and a mechanical seal is arranged on the contact surface between the part of the rotating shaft extending to the machine shell and the machine shell.
As a still further scheme of the invention: and an O-shaped sealing ring is arranged between the mounting seat of the hydraulic pump station and the inner wall of the rotating shaft.
As a still further scheme of the invention: and the hydraulic cylinder is connected with a hydraulic lock.
As a still further scheme of the invention: the blade actuating mechanism comprises an actuating rod, a connecting rod, a crank and blades, wherein the actuating rod is of a T-shaped structure, one end of an actuating rod horizontal rod is fixedly connected with a flange at the end part of a push rod of a hydraulic cylinder through a flange, the top end of an actuating rod vertical rod is hinged with the connecting rod, the other end of the connecting rod is hinged with the crank, the crank is connected with the blades, and the blades are rotatably connected in an impeller hub hole through pivots.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, independent exciting currents are respectively provided for the main stator and the auxiliary stator through the controller, so that the main rotor and the auxiliary rotor generate induced voltages to generate power and supply energy for the hydraulic pump station and the electromagnetic directional valve, if the controller cuts off the exciting currents, the hydraulic pump station or the electromagnetic directional valve does not work when power is cut off, under the condition that the auxiliary stator is cut off, namely the two-position four-way electromagnetic directional valve is cut off, if the hydraulic pump station is switched on to work, the high-pressure oil port P is switched on an upper cavity pipeline B of the hydraulic cylinder, the oil outlet T is switched on a lower cavity pipeline A, and a push rod of the hydraulic cylinder moves downwards; under the condition that the auxiliary stator is electrified, namely the two-position four-way electromagnetic directional valve is electrified, if the hydraulic pump station is switched on to work, the high-pressure oil port P is switched on the lower cavity pipeline A of the hydraulic cylinder, the oil outlet T is switched on the upper cavity pipeline B, and the push rod of the hydraulic cylinder moves upwards, so that the driving rod drives the crank to rotate through the connecting rod, the rotation of the blade is realized, and the automatic adjustment of the angle of the blade in the working process is realized;
2. the rotating shaft is arranged in the shell, the inner environment and the outer environment of the submersible motor are isolated through the mechanical seal and the static seal ring, the blade angle adjusting device can be used in any outer environment, and the submersible motor is high in flexibility and wide in application range.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic front view of a synchronous rotary vane angle adjusting device.
Fig. 2 is a schematic structural diagram of a blade actuator in the synchronous rotation type blade angle adjusting device.
FIG. 3 is a schematic diagram of a hydraulic pump station connected to a hydraulic cylinder in the synchronous rotation type blade angle adjusting apparatus.
In the figure: 1. a housing; 2. a main stator; 3. a main rotor; 4. a rotating shaft; 5. a hydraulic pump station; 6. a hydraulic cylinder; 7. a displacement signal generator; 8. a sensor; 9. a secondary stator; 10. a sub-rotor; 11. an electromagnetic directional valve; 12. mechanical sealing; 13. an O-shaped sealing ring; 14. hydraulic locking; 15. a drive rod; 16. a connecting rod; 17. a crank; 18. a blade.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in the embodiment of the present invention, the synchronous rotation type blade angle adjusting device includes a housing 1 and a rotating shaft 4, a main stator 2 and an auxiliary stator 9 are fixedly disposed on a bottom surface of the housing 1, the main stator 2 and the auxiliary stator 9 are fixed on the housing 1 and always kept in a stationary state, a main rotor 3 and an auxiliary rotor 10 which are adapted to the main stator 2 and the auxiliary stator 9 are fixedly disposed on the rotating shaft 4 and move synchronously with the rotating shaft 4, a hydraulic pump station 5 and a hydraulic cylinder 6 are disposed inside the rotating shaft 4, a high pressure oil port P of the hydraulic pump station 5 is communicated with an upper cavity pipeline B of the hydraulic cylinder 6, an oil outlet T of the hydraulic pump station 5 is communicated with a lower cavity pipeline a of the hydraulic cylinder 6, an electromagnetic directional valve 11 is further disposed inside the rotating shaft 4, the electromagnetic directional valve 11 is electrically connected to the hydraulic pump station 5, and a controller is disposed outside the housing 1, the controller passes through the wire and is connected with 2 electricity of main stator, the controller passes through the wire and is connected with 9 electricity of vice stator, main rotor 3 passes through the wire and is connected with hydraulic power unit 5 electricity, vice rotor 10 passes through the wire and is connected with 11 electricity of electromagnetic reversing valve, and the controller provides independent excitation current for main stator 2 and vice stator 9 respectively for main rotor 3 and vice rotor 10 produce induced voltage, for hydraulic power unit 5 and 11 electricity generation energy supplies of electromagnetic reversing valve, if the controller disconnection excitation current, hydraulic power unit 5 or 11 will not work break down in time of electromagnetic reversing valve.
One end of a push rod of the hydraulic cylinder 6 is connected with the blade actuating mechanism through a flange.
The inside of rotation axis 4 is provided with displacement signal generator 7, displacement signal generator 7 sets up the one end at 6 push rods of pneumatic cylinder, set up the notch of displacement signal generator 7 installation on rotation axis 4, displacement signal generator 7's output sets up the outside at rotation axis 4 through the notch, the top that just is located rotation axis 4 notch on the bottom surface of casing 1 is provided with the sensor 8 with displacement signal generator 7 looks adaptation, sensor 8 passes through the wire electricity with the controller and is connected, realizes the controller to the receipt of sensor 8 signal.
The casing 1 is provided with a guide groove for a lead to pass through, and the guide groove is positioned between the main stator 2 and the auxiliary stator 9 on the casing 1, so that the distribution and control of the lead in the synchronous rotation type blade angle adjusting device are facilitated.
A guide hole for a lead wire to pass through is formed on the surface of the rotating shaft 4 and between the main rotor 3 and the sub-rotor 10.
The part of the rotating shaft 4 extending to the machine shell 1 and the contact surface of the machine shell 1 are provided with mechanical seals 12, an O-shaped sealing ring 13 is arranged between the mounting seat of the hydraulic pump station 5 and the inner wall of the rotating shaft 4, isolation of the inner environment and the outer environment of the submersible motor is achieved, the blade angle adjusting device can be used in any outer environment, flexibility is high, and the application range is wide.
The hydraulic cylinder 6 is connected with a hydraulic lock 14 to maintain the pressure of the upper cavity and the lower cavity of the hydraulic cylinder 6.
The electromagnetic directional valve 11 is a two-position four-way valve.
The blade executing mechanism comprises a driving rod 15, a connecting rod 16, a crank 17 and blades 18, wherein the driving rod 15 is of a T-shaped structure, one end of a horizontal rod of the driving rod 15 is fixedly connected with a flange at the end part of a push rod of the hydraulic cylinder 6 through a flange, the top end of a vertical rod of the driving rod 15 is hinged with the connecting rod 16, the other end of the connecting rod 16 is hinged with the crank 17, the crank 17 is connected with the blades 18, a pivot of the blades 18 is rotatably connected in a hub hole of the impeller, the connecting rod 16 is driven by the driving rod 15 to drive the crank 17 to rotate, so that the rotation of the blades 18 is realized, and the automatic adjustment of the angle of the blades 18 in the working process is realized;
the working principle is as follows: the controller provides independent exciting currents for the main stator 2 and the auxiliary stator 9 respectively, so that the main rotor 3 and the auxiliary rotor 10 generate induced voltages to generate power and supply energy for the hydraulic pump station 5 and the electromagnetic directional valve 11, if the controller cuts off the exciting currents, the hydraulic pump station 5 or the electromagnetic directional valve 11 is powered off and does not work, under the condition that the auxiliary stator 9 is powered off, namely the two-position four-way electromagnetic directional valve 11 is powered off, if the hydraulic pump station 5 is powered on and works, the high-pressure oil port P is connected with the upper cavity pipeline B of the hydraulic cylinder 6, the oil outlet T is connected with the lower cavity pipeline A, and the push rod of the hydraulic cylinder 6 moves downwards; under the condition that the auxiliary stator 9 is connected with electricity, namely the two-position four-way electromagnetic directional valve 11 is connected with electricity, if the hydraulic pump station 5 is connected to work, the high-pressure oil port P is connected with the lower cavity pipeline A of the hydraulic cylinder 6, the oil outlet T is connected with the upper cavity pipeline B, the push rod of the hydraulic cylinder 6 moves upwards, and therefore the driving rod 15 drives the crank 17 to rotate through the connecting rod 16, rotation of the blades 18 is achieved, and automatic adjustment of angles of the blades 18 in the working process is achieved.
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 various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. Synchronous rotation formula blade angle adjusting device, including casing (1) and rotation axis (4), its characterized in that: the hydraulic motor is characterized in that a main stator (2) and an auxiliary stator (9) are fixedly arranged on the bottom surface of the machine shell (1), a main rotor (3) and an auxiliary rotor (10) which are matched with the main stator (2) and the auxiliary stator (9) are fixedly arranged on the rotating shaft (4), a hydraulic pump station (5) and a hydraulic cylinder (6) are arranged inside the rotating shaft (4), a high-pressure oil port P of the hydraulic pump station (5) is communicated with an upper cavity pipeline B of the hydraulic cylinder (6), an oil outlet T of the hydraulic pump station (5) is communicated with a lower cavity pipeline A of the hydraulic cylinder (6), an electromagnetic reversing valve (11) is further arranged inside the rotating shaft (4), and the electromagnetic reversing valve (11) is electrically connected with the hydraulic pump station (5);
a controller is arranged outside the machine shell (1), the controller is electrically connected with the main stator (2) through a lead, the controller is electrically connected with the auxiliary stator (9) through a lead, the main rotor (3) is electrically connected with the hydraulic pump station (5) through a lead, and the auxiliary rotor (10) is electrically connected with the electromagnetic directional valve (11) through a lead;
one end of a push rod of the hydraulic cylinder (6) is connected with the blade actuating mechanism through a flange.
2. The synchronous rotary blade angle adjusting device of claim 1, wherein a displacement signal generator (7) is arranged inside the rotating shaft (4), the displacement signal generator (7) is arranged at one end of a push rod of the hydraulic cylinder (6), a notch for mounting the displacement signal generator (7) is formed in the rotating shaft (4), an output end of the displacement signal generator (7) is arranged outside the rotating shaft (4) through the notch, a sensor (8) matched with the displacement signal generator (7) is arranged on the bottom surface of the machine shell (1) and above the notch of the rotating shaft (4), and the sensor (8) is electrically connected with the controller through a lead.
3. The synchronous rotary vane angle adjusting device of claim 1, wherein the casing (1) is provided with a guide groove for passing a lead wire therethrough, and the guide groove is located between the main stator (2) and the sub-stator (9) on the casing (1).
4. The synchronous rotary blade angle adjusting device according to claim 1, wherein a guide hole through which a wire passes is opened on the surface of the rotary shaft (4) between the main rotor (3) and the sub-rotor (10).
5. Synchronous rotary vane angle adjustment device according to claim 1, characterized in that the part of the rotary shaft (4) extending to the casing (1) is provided with a mechanical seal (12) on the contact surface with the casing (1).
6. Synchronous rotary blade angle adjustment device according to claim 1, characterized in that an O-ring seal (13) is arranged between the mounting seat of the hydraulic power unit (5) and the inner wall of the rotary shaft (4).
7. Synchronous rotary blade angle adjustment device according to claim 1, characterized in that a hydraulic lock (14) is connected to the hydraulic cylinder (6).
8. Synchronous rotating blade angle adjustment device according to claim 1, characterized in that the electromagnetic directional valve (11) is a two-position four-way valve.
9. The synchronous rotary blade angle adjusting device of claim 1, wherein the blade actuator comprises a driving rod (15), a connecting rod (16), a crank (17) and a blade (18), the driving rod (15) is of a T-shaped structure, one end of a horizontal rod of the driving rod (15) is fixedly connected with a flange at the end part of a push rod of the hydraulic cylinder (6) through a flange, the top end of a vertical rod of the driving rod (15) is hinged with the connecting rod (16), the other end of the connecting rod (16) is hinged with the crank (17), the crank (17) is connected with the blade (18), and a pivot of the blade (18) is rotatably connected in a hub hole of the impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480212.6A CN112600374B (en) | 2020-12-15 | 2020-12-15 | Synchronous rotation type blade angle adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011480212.6A CN112600374B (en) | 2020-12-15 | 2020-12-15 | Synchronous rotation type blade angle adjusting device |
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| Publication Number | Publication Date |
|---|---|
| CN112600374A CN112600374A (en) | 2021-04-02 |
| CN112600374B true CN112600374B (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011480212.6A Active CN112600374B (en) | 2020-12-15 | 2020-12-15 | Synchronous rotation type blade angle adjusting device |
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| Country | Link |
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| CN (1) | CN112600374B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113623266B (en) * | 2021-09-27 | 2022-03-08 | 合肥恒大江海泵业股份有限公司 | Submerged motor pump with adjustable blade |
| CN113819089B (en) * | 2021-09-27 | 2022-09-27 | 合肥恒大江海泵业股份有限公司 | Integral type submerged motor pump blade adjusting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444641A (en) * | 2011-12-12 | 2012-05-09 | 武汉工程大学 | Hydraulic motor cylinder |
| CN103423152A (en) * | 2012-11-23 | 2013-12-04 | 浙江台州先顶液压有限公司 | Automotive hydraulic vane pump motor and switching control hydraulic system thereof |
| CN107654404A (en) * | 2017-08-16 | 2018-02-02 | 张元杰 | A kind of axial flow fan with adjustable moving blades hydraulic control actuator |
| CN109026757A (en) * | 2018-11-08 | 2018-12-18 | 合肥恒大江海泵业股份有限公司 | A kind of adjustment of blade angle device |
| CN111169613A (en) * | 2020-01-14 | 2020-05-19 | 兰州理工大学 | Double-stator driving and power unit integrated ternary vector pump jet propeller |
-
2020
- 2020-12-15 CN CN202011480212.6A patent/CN112600374B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444641A (en) * | 2011-12-12 | 2012-05-09 | 武汉工程大学 | Hydraulic motor cylinder |
| CN103423152A (en) * | 2012-11-23 | 2013-12-04 | 浙江台州先顶液压有限公司 | Automotive hydraulic vane pump motor and switching control hydraulic system thereof |
| CN107654404A (en) * | 2017-08-16 | 2018-02-02 | 张元杰 | A kind of axial flow fan with adjustable moving blades hydraulic control actuator |
| CN109026757A (en) * | 2018-11-08 | 2018-12-18 | 合肥恒大江海泵业股份有限公司 | A kind of adjustment of blade angle device |
| CN111169613A (en) * | 2020-01-14 | 2020-05-19 | 兰州理工大学 | Double-stator driving and power unit integrated ternary vector pump jet propeller |
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| CN112600374A (en) | 2021-04-02 |
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