CN110748602A - Two-stage centrifugal type energy storage flywheel with variable rotational inertia - Google Patents
Two-stage centrifugal type energy storage flywheel with variable rotational inertia Download PDFInfo
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- CN110748602A CN110748602A CN201911077466.0A CN201911077466A CN110748602A CN 110748602 A CN110748602 A CN 110748602A CN 201911077466 A CN201911077466 A CN 201911077466A CN 110748602 A CN110748602 A CN 110748602A
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- energy storage
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- driven wheel
- driving wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/30—Flywheels
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention provides a two-stage centrifugal type energy storage flywheel with variable rotational inertia, which relates to the technical field of energy storage machinery and comprises a rotating shaft and a driving wheel fixedly sleeved on the rotating shaft, wherein a driven wheel is connected to the driving wheel through a centrifugal linkage mechanism; the centrifugal linkage mechanism comprises a first sliding groove and a second sliding groove which are respectively arranged on the driving wheel and the driven wheel, a sliding block is connected in the first sliding groove through a spring, and a fixing surface which is matched with the conical surface of the sliding block is arranged in the second sliding groove. When the motor is started, only the driving wheel is driven to rotate, the sliding block can do centrifugal motion in the sliding groove along with the increase of the rotating speed and slide into the second sliding groove to drive the driven wheel to rotate, so that the energy storage flywheel is started in a grading manner, the rotating inertia is increased, the operation stability is improved, and the starting load of the motor is reduced.
Description
Technical Field
The invention relates to the technical field of energy storage machinery, in particular to a two-stage centrifugal energy storage flywheel with variable rotational inertia.
Background
The flywheel energy storage is to store electric energy by utilizing a flywheel rotating at a high speed, the flywheel is driven by a motor to rotate at a high speed when the electric energy is surplus, and a generator is driven to generate electricity by utilizing the kinetic energy of the flywheel rotating at the high speed when discharging. When the rotational inertia of the flywheel is made to be large, the flywheel can be used as an energy storage device for storing redundant energy of power machines such as an engine, a press machine and the like.
The moment of inertia of the existing common energy storage flywheel is constant and unadjustable, and when the moment of inertia of the flywheel is made to be large, although the energy storage capacity of the flywheel can be increased and the stability of mechanical operation is improved, the starting torque of the flywheel is overlarge, and the starting power of a motor is increased. At present, the starting problem of a large-moment-of-inertia flywheel is only solved by installing a high-power motor, but after the flywheel runs stably, the high-power motor can consume too much electric energy and the condition that a large horse pulls a small car exists.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a two-stage centrifugal type energy storage flywheel with variable rotational inertia, which solves the problem that the rotational inertia of the energy storage flywheel in the prior art can not be flexibly changed.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the two-stage centrifugal energy storage flywheel with variable rotational inertia comprises a rotating shaft and a driving wheel fixedly sleeved on the rotating shaft, wherein a driven wheel is connected to the driving wheel through a centrifugal linkage mechanism. The centrifugal linkage mechanism comprises a first sliding groove and a second sliding groove which are respectively arranged on the driving wheel and the driven wheel, a sliding block is connected in the first sliding groove through a spring, and a fixing surface which is matched with the conical surface of the sliding block is arranged in the second sliding groove.
Furthermore, a plurality of graded driven wheels are sequentially sleeved on the driven wheels from inside to outside, and centrifugal linkage mechanisms are arranged between the driven wheels and the graded driven wheels and between adjacent graded driven wheels.
Furthermore, a plurality of centrifugal linkage mechanisms are uniformly arranged between the driving wheel and the driven wheel along the circumference.
Further, first spout sets up on the outer cylinder face of action wheel, and the second spout sets up on the inner cylinder face of following the driving wheel, and first spout and second spout all radially set up.
Further, the spring is the extension spring, and on the one end of spring was fixed in the bottom surface of first spout, the other end of spring was fixed in on the bottom surface of slider.
Furthermore, the side surface of the end of the sliding block, which is far away from the spring, is matched with the conical surface of the fixed surface.
Furthermore, the grading driven wheel and the driven wheel are rotatably connected to the rotating shaft through bearings.
Furthermore, the driven wheel comprises a wheel spoke plate which is rotationally connected with the rotating shaft, the wheel spoke plate is fixedly connected to the end face of the wheel rim, and the wheel rim is sleeved on the driving wheel in a gap mode.
The invention has the beneficial effects that: through set up centrifugal link gear between action wheel and follow driving wheel, only after the action wheel rotated certain speed, make the slider through spring coupling on the action wheel slide to the second spout under the centrifugal force effect in, transmit the moment of torsion for from the driving wheel through the slider for the action wheel can drive and rotate from the driving wheel together.
Therefore, when the energy storage flywheel is started at the beginning, the motor only needs to drive the driving wheel to rotate, so that the low-torque starting of the energy storage flywheel is realized, the starting load of the motor is reduced, and the condition that the 'big horse pulls the trolley' is avoided; after the rotating speed of the driving wheel is increased to a certain degree, the driven wheel is driven to rotate through the centrifugal linkage mechanism, so that the rotational inertia of the energy storage flywheel is increased, and the energy storage capacity is improved; the centrifugal linkage mechanism does not need manual control, automatically drives the driven wheel to rotate together after the rotating speed reaches a certain degree, is related to the rotating speed, can control the time of linkage between the driven wheel and the driving wheel by controlling the weight of the sliding block and the rigidity of the spring, is simple and convenient to operate, and has no extra capacity requirement on operators.
The whole energy storage flywheel is simple in structure, the universality of the centrifugal linkage mechanism is high, the rotational inertia of the energy storage flywheel can be increased by increasing the number of the graded driven wheels, and the rotational inertia of the energy storage flywheel can be changed more flexibly according to actual needs; and the whole energy storage flywheel can be started in sequence in a grading manner, so that the operation stability of machinery is improved.
Drawings
FIG. 1 is a radial cross-sectional view of a two-stage centrifugal variable moment of inertia stored energy flywheel.
Fig. 2 is an axial cross-sectional view of a two-stage centrifugal variable moment of inertia stored energy flywheel.
Wherein, 1, a rotating shaft; 2. a driving wheel; 3. a driven wheel; 31. a wheel disc; 32. a rim; 4. a centrifugal linkage mechanism; 41. a first chute; 42. a second chute; 421. a fixed surface; 43. a spring; 44. a slider; 5. and the driven wheels are graded.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1, the two-stage centrifugal type energy storage flywheel with variable rotational inertia comprises a rotating shaft 1 and a driving wheel 2 fixedly sleeved on the rotating shaft 1, wherein a driven wheel 3 is connected to the driving wheel 2 through a centrifugal linkage mechanism 4. The centrifugal linkage mechanism 4 comprises a first chute 41 and a second chute 42 which are respectively arranged on the driving wheel 2 and the driven wheel 3, the first chute 41 is connected with a slide block 44 through a spring 43, and the second chute 42 is provided with a fixed surface 421 which is in conical surface fit with the slide block 44.
The first chute 41 is disposed on an outer cylindrical surface of the driving wheel 2, the second chute 42 is disposed on an inner cylindrical surface of the driven wheel 3, and both the first chute 41 and the second chute 42 are disposed along a radial direction. The spring 43 is a tension spring, one end of the spring 43 is fixed to the bottom surface of the first slide groove 41, and the other end of the spring 43 is fixed to the bottom surface of the slider 44. The side of the slider 44 remote from the end of the spring 43 is in tapered engagement with the fixed surface 421.
The working principle of the invention is as follows: the pivot 1 is connected with the motor through drive mechanism, the motor drives pivot 1 and rotates, and then drive and pivot 1 fixed connection's action wheel 2 and rotate, action wheel 2 can produce centrifugal force at rotatory in-process, it is big enough when the rotational speed, the centrifugal force of production is big enough after, make the slider 44 of only connecting on action wheel 2 through spring 43 remove to the one end of keeping away from the centre of a circle under the centrifugal force effect, make slider 44 keep away from spring 43 one end and get into in second spout 42 and the cooperation of the conical surface, through the cooperation of the conical surface, be convenient for transmission moment of torsion and slider slide in smoothly, the bottom surface of second spout 42 is used for limiting slider 44's further centrifugal motion, make slider 44 act as the effect of a pin and connect action wheel 2 and follow driving wheel 3, and then make follow driving wheel 3 and rotate together with action wheel 2.
The present invention will be described in further detail with reference to specific examples.
Example 1
On the basis of the main scheme, a plurality of centrifugal linkage mechanisms 4 are uniformly arranged between the driving wheel 2 and the driven wheel 3 along the circumference so as to increase the coaxiality of the driven wheel 3 and the driving wheel 2.
Example 2
The further improvement is made on the basis of the embodiment 1, the driven wheel 3 comprises a wheel disk 31 which is rotationally connected with the rotating shaft 1, the wheel disk 31 is fixedly connected on the end surface of a wheel rim 32, and the wheel rim 32 is sleeved on the driving wheel 2 in a clearance manner. The fixed connection between the spoke plate 31 and the end face of the rim 32 can be a common mechanical fixed connection mode such as welding, integral casting or bolt connection, so as to achieve the purpose of reducing the processing difficulty. The wheel disk 31 is preferably rotatably connected to the shaft 1 via bearings.
Example 3
The energy storage flywheel is further improved on the basis of the embodiment 1, in order to increase the rotational inertia of the energy storage flywheel, a plurality of graded driven wheels 5 can be sequentially sleeved on the driven wheels 3 from inside to outside, centrifugal linkage mechanisms 4 are respectively arranged between the driven wheels 3 and the graded driven wheels 5 and between the adjacent graded driven wheels 5, namely, a first-grade graded driven wheel is sleeved on the driven wheels 3, a centrifugal linkage mechanism 4 is arranged between the first-grade graded driven wheel and the graded driven wheel, a second-grade graded driven wheel is sleeved on the first-grade graded driven wheel, a centrifugal linkage mechanism 4 is arranged between the first-grade driven wheel and the graded driven wheel, and successive recursion is carried out according to the requirement on the rotational inertia of the energy storage flywheel until.
Example 4
The further improvement is made on the basis of the embodiment 3, all the stepped driven wheels 5 are similar to the driven wheels 3 in the embodiment 2, and only have different sizes, namely the inner diameter of the rim of the first-stage stepped driven wheel is larger than the outer diameter of the rim of the driven wheel 3, the inner diameter of the rim of the second-stage stepped driven wheel is larger than the outer diameter of the rim of the first-stage stepped driven wheel, and the like, so that the processing procedures and the used processing equipment are reduced. The wheel webs between adjacent graded driven wheels 5 are arranged on opposite sides in the axial direction, as shown in fig. 2, that is, if the wheel web of the driven wheel 3 is located on the left side, the wheel web of the first graded driven wheel is located on the right side, then the wheel web of the second graded driven wheel is located on the left side, and the driven wheel 3 and the wheel webs of all graded driven wheels 5 are rotationally connected with the rotating shaft 1.
Example 5
For example, the energy storage flywheel is applied to a walking beam pumping unit which is main oil extraction equipment in China, a rotating shaft 1 is connected with an output shaft of a driving motor of the walking beam pumping unit through a belt transmission mechanism, after the driving motor is started, the energy storage flywheel is driven to carry out secondary energy storage, after the rotating speed of the driving motor is stable, the output shaft of the driving motor is connected with an input shaft of a reduction gearbox of the walking beam pumping unit through a clutch, and along with the reduction of the speed, the energy storage flywheel releases stored energy through reverse transmission of the belt transmission mechanism. The energy storage flywheel can reduce the starting current of the driving motor, reduce the impact on the driving motor and prolong the service life of the driving motor.
In the normal operation process of the beam-pumping unit, when the pumping unit goes down, the energy storage flywheel stores the energy released by the sucker rod string and the energy given by the driving motor, and the stored energy is converted into the kinetic energy of the flywheel, so that the rotating speed of the flywheel is increased. When the pumping unit is in an upstroke, the rotating speed of the flywheel is reduced, kinetic energy is released, and the driving motor is helped to do work. The energy storage flywheel is arranged in the beam pumping unit, so that the system can run stably, the working performance of the pumping unit is improved, the service life of equipment is prolonged, and the purposes of energy conservation and consumption reduction are achieved.
Claims (8)
1. A two-stage centrifugal type energy storage flywheel with variable rotational inertia is characterized by comprising a rotating shaft (1) and a driving wheel (2) fixedly sleeved on the rotating shaft (1), wherein a driven wheel (3) is connected to the driving wheel (2) through a centrifugal linkage mechanism (4);
the centrifugal linkage mechanism (4) comprises a first sliding groove (41) and a second sliding groove (42) which are respectively arranged on the driving wheel (2) and the driven wheel (3), a sliding block (44) is connected to the first sliding groove (41) through a spring (43), and a fixing surface (421) matched with the sliding block (44) in a conical surface mode is arranged in the second sliding groove (42).
2. A two-stage centrifugal variable-moment energy storage flywheel according to claim 1, wherein a plurality of stepped driven wheels (5) are sleeved on the driven wheel (3) from inside to outside in sequence, and the centrifugal linkage mechanisms (4) are arranged between the driven wheel (3) and the stepped driven wheels (5) and between adjacent stepped driven wheels (5).
3. A two-stage centrifugal variable moment of inertia energy storing flywheel according to claim 1, characterized in that a number of the centrifugal linkages (4) are circumferentially arranged between the driving wheel (2) and the driven wheel (3).
4. A two-stage centrifugal variable moment of inertia energy storage flywheel according to claim 1, characterized in that the first runner (41) is arranged on an outer cylindrical surface of the driving wheel (2), the second runner (42) is arranged on an inner cylindrical surface of the driven wheel (3), and both the first runner (41) and the second runner (42) are arranged radially.
5. A two-stage centrifugal variable-moment-of-inertia energy storage flywheel according to claim 1 or 4, wherein the spring (43) is a tension spring, one end of the spring (43) is fixed to the bottom surface of the first runner (41), and the other end of the spring (43) is fixed to the bottom surface of the slider (44).
6. A two-stage centrifugal variable inertia energy storage flywheel according to claim 5, wherein the side of the slider (44) remote from the end of the spring (43) is conically fitted to the stationary surface (421).
7. A two-stage centrifugal variable moment of inertia energy storage flywheel according to claim 2, characterized in that the stepped driven wheel (5) and the driven wheel (3) are both rotationally connected to the shaft (1) by means of bearings.
8. A two-stage centrifugal variable inertia energy storage flywheel according to claim 7, wherein the driven wheel (3) comprises a spoke plate (31) rotatably connected with the rotating shaft (1), the spoke plate (31) is fixedly connected with the end face of a rim (32), and the rim (32) is sleeved on the driving wheel (2) in a clearance way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077466.0A CN110748602A (en) | 2019-11-06 | 2019-11-06 | Two-stage centrifugal type energy storage flywheel with variable rotational inertia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077466.0A CN110748602A (en) | 2019-11-06 | 2019-11-06 | Two-stage centrifugal type energy storage flywheel with variable rotational inertia |
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| Publication Number | Publication Date |
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| CN110748602A true CN110748602A (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911077466.0A Pending CN110748602A (en) | 2019-11-06 | 2019-11-06 | Two-stage centrifugal type energy storage flywheel with variable rotational inertia |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483601A (en) * | 2020-12-08 | 2021-03-12 | 陈谦 | Flywheel with automatically adjustable rotary inertia |
| CN114962548A (en) * | 2022-06-10 | 2022-08-30 | 中国北方发动机研究所(天津) | Hydraulic drive's adjustable flywheel of inertia for experiment |
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| DE202005019523U1 (en) * | 2005-12-14 | 2006-03-30 | Neubacher, René | Flywheel for IC engines with variable moment of inertia has four radial bores forming cross which are filled with hydraulic oil and contain weights which move towards and away from axis of wheel in controlled manner |
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| CN103225657A (en) * | 2013-04-09 | 2013-07-31 | 苏州瑞佳新能源动力科技有限公司 | Automatic dry-type centrifugal roller torque force clutch |
| CN206555324U (en) * | 2017-03-14 | 2017-10-13 | 长沙医学院 | A kind of clutch for classroom projector screen elevating control |
| CN107923481A (en) * | 2015-08-20 | 2018-04-17 | 株式会社艾科赛迪 | Cogging restraining device, torque converter and power transmission |
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2019
- 2019-11-06 CN CN201911077466.0A patent/CN110748602A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57186653A (en) * | 1981-05-13 | 1982-11-17 | Toshiba Corp | Flywheel device |
| JPS63203943A (en) * | 1987-02-18 | 1988-08-23 | Ricoh Co Ltd | Rotation unevenness reducing device for rotary body |
| JPH0246344A (en) * | 1988-08-09 | 1990-02-15 | Toyota Autom Loom Works Ltd | Inertia moment changing flywheel |
| CN2146610Y (en) * | 1991-04-09 | 1993-11-17 | 杨泰和 | Dynamic flywheel |
| CN2381840Y (en) * | 1999-08-17 | 2000-06-07 | 上海交通大学 | Centrifugal flywheel with self adaptable rotary inertia |
| DE202005019523U1 (en) * | 2005-12-14 | 2006-03-30 | Neubacher, René | Flywheel for IC engines with variable moment of inertia has four radial bores forming cross which are filled with hydraulic oil and contain weights which move towards and away from axis of wheel in controlled manner |
| CN202475129U (en) * | 2011-12-28 | 2012-10-03 | 南京华翔风电能源科技有限公司 | Speed limiting device for wind driven generator |
| CN103075463A (en) * | 2013-01-17 | 2013-05-01 | 浙江大学 | Centrifugal flywheel |
| CN103225657A (en) * | 2013-04-09 | 2013-07-31 | 苏州瑞佳新能源动力科技有限公司 | Automatic dry-type centrifugal roller torque force clutch |
| CN107923481A (en) * | 2015-08-20 | 2018-04-17 | 株式会社艾科赛迪 | Cogging restraining device, torque converter and power transmission |
| CN206555324U (en) * | 2017-03-14 | 2017-10-13 | 长沙医学院 | A kind of clutch for classroom projector screen elevating control |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483601A (en) * | 2020-12-08 | 2021-03-12 | 陈谦 | Flywheel with automatically adjustable rotary inertia |
| CN114962548A (en) * | 2022-06-10 | 2022-08-30 | 中国北方发动机研究所(天津) | Hydraulic drive's adjustable flywheel of inertia for experiment |
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