CN112081864A - Tuned mass damper for out-of-plane vibration control of fan structure - Google Patents
Tuned mass damper for out-of-plane vibration control of fan structure Download PDFInfo
- Publication number
- CN112081864A CN112081864A CN202010921986.1A CN202010921986A CN112081864A CN 112081864 A CN112081864 A CN 112081864A CN 202010921986 A CN202010921986 A CN 202010921986A CN 112081864 A CN112081864 A CN 112081864A
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- Prior art keywords
- locking
- fan
- tuned mass
- mass damper
- pry
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Classifications
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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
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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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
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
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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
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to a tuned mass damper for controlling out-of-plane vibration of a fan structure, which comprises a spring damping system and a prying body, wherein the spring damping system is connected between the front part of a fan cabin and the prying body; the prying body is integrally used as a mass block of the passive tuned mass damper, and fan cabin internal equipment including a gear box, a brake disc and a generator is arranged in the prying body.
Description
Technical Field
The invention relates to a passive Tuned Mass Damper (TMD) for controlling vibration of a horizontal shaft type fan structural surface in the outer direction (horizontal axial direction), and belongs to the technical field of wind power.
Background
The fan converts air kinetic energy into mechanical energy by means of huge blades to drive the generator to generate electricity, and the blades bear larger wind load in the out-of-plane direction (the direction perpendicular to the rotating plane of the blades), so that the fan is a main load source for the fan structure to vibrate. Because the wind load borne by the fan blades in the in-plane direction (the direction of the rotating plane of the blades) is small, the fan base structure has the characteristic that the out-of-plane vibration level is far larger than the in-plane vibration level. In order to ensure safe and stable operation of the fan structure, especially an offshore fan with a severer service environment, it is necessary to control vibration in an outer direction (a main vibration direction) of the fan structure.
At present, the installation of the TMD is a main means for realizing the vibration control of the fan structure. According to the working principle of TMD, it can be divided into passive, semi-active and active systems, wherein the passive TMD system is widely used in civil engineering structure due to its simple structure, sensitive response and low cost. However, conventional passive TMD systems are difficult to apply to wind turbine architectures due to: (1) the internal space of the fan cabin is narrow, and a mass block of the TMD is difficult to accommodate, so that the TMD system cannot be installed in the cabin; (2) although tower section of thick bamboo top possesses certain installation space, nevertheless install in the inside TMD of top of the tower and can't rotate along with the fan driftage, in case when fan blade rotation plane changes along with the wind direction (for the wind energy of catching of at utmost, the fan that has driftage system can keep fan blade rotation plane and wind direction perpendicular all the time), can't effectively carry out effective control to fan main vibration direction, and install TMD inside can influence personnel and get into the cabin inside and overhaul in the top of the tower, engineering application feasibility is relatively poor.
In order to ensure that the vibration control direction of the passive TMD is consistent with the outer direction of the fan blade surface all the time and solve the engineering problem of being installed inside a fan cabin, the invention designs a tuned mass damper capable of meeting the vibration control of the fan surface outer direction by utilizing the mass of equipment inside the cabin.
Disclosure of Invention
The invention provides a passive tuned mass damper which utilizes the internal mass of a fan cabin as a TMD mass block, and provides a feasible scheme for controlling the out-of-plane direction vibration of a horizontal shaft type fan structure. The invention is realized by the following technical scheme:
the utility model provides a harmonious mass damper for fan structure off-plate vibration control, includes spring damping system and sled body, and spring damping system connects between fan cabin front portion and sled body its characterized in that:
the spring damping system comprises a rigid connecting rod, a rigid connecting plate, a spiral spring and a viscous damper, one end of the rigid connecting rod is fixed at the front part of the fan cabin, the other end of the rigid connecting rod is fixedly connected with one end of the spiral spring and one end of the viscous damper through the rigid connecting plate, and the other ends of the spiral spring and the viscous damper are connected with the prying body to form the passive tuned mass damper;
the prying body is integrally used as a mass block of the passive tuned mass damper, and fan cabin internal equipment including a gear box, a brake disc and a generator is arranged in the prying body.
Preferably, the tuned mass damper further comprises a guide locking beam and a locking mechanism, wherein the guide locking beam and the locking mechanism are used for locking the pry body, the locking mechanism comprises a hydraulic cylinder, a piston rod and a locking plug, the locking mechanism is fixed above the guide locking beam, and the locking mechanism is matched with the guide locking beam fixed at the top of the pry body to work; the guide locking beam comprises a guide beam, a rigid cylinder and locking holes, the guide beam is symmetrically arranged relative to the rigid cylinder, the length of the guide beam is larger than half of the maximum movement amplitude of the prying body, the locking holes are formed in the rigid cylinder, chamfers which are beneficial to smooth insertion of locking plugs are arranged at the end parts of the locking holes, and the hydraulic cylinder is used for driving the piston rod to extend when locking is needed, so that the locking plugs are inserted into the locking holes.
The tuned mass damper also comprises an axial limiter, wherein the axial limiter consists of an axial limiting baffle and a viscous collision layer, and the axial limiting baffle is used for limiting the prying body to slide greatly; the viscous collision layer can absorb the energy of the prying body impacting the axial limiting baffle, and the axial limiter is protected and the energy consumption is increased.
The tuned mass damper further comprises lateral limiters, and the lateral limiters are arranged on two sides of the pry body.
And the bottom of the prying body is provided with a roller and a braking mechanism.
Due to the adoption of the technical scheme, the invention has the following advantages: 1. the invention utilizes the internal equipment of the fan cabin as the mass block of the TMD, solves the problem that the conventional TMD needs to occupy the super large space of the cabin, and has excellent engineering feasibility; 2. the invention does not need to additionally configure the TMD mass block, thereby greatly reducing the manufacturing cost of the TMD; 3. according to the invention, the internal equipment of the engine room is skid-mounted, so that the internal equipment of the engine room is more orderly and reasonable in arrangement, the integral hoisting and transportation are convenient, and the TMD is more favorably and rapidly mounted; 4. the TMD is arranged in the cabin, is not influenced by the yaw of the fan, and can ensure that the movement direction of the TMD is always consistent with the out-of-plane vibration direction of the fan, so that the optimal effect of controlling the vibration of the out-of-plane vibration direction of the fan is achieved. 5. The TMD locking device has the advantages of simple structure, low manufacturing cost, simple and reliable TMD working locking and starting and stopping, and good engineering application prospect.
Drawings
FIG. 1 is a front view of the tuned mass damper of the present invention;
FIG. 2 is a left side view of section A-A of the present invention;
FIG. 3 is a sectional top view of the invention B-B;
the reference numbers in the figures illustrate: 1 is a spring damping system; 11 is a rigid connecting rod; 12 a rigid connection plate; 13 is a helical spring; 14 is a viscous damper; 2 is a main shaft transmission system; 21 is a driving shaft; 22 is a driven shaft; 3 is an axial limiter; 31 is an axial limit baffle; 32 is a viscous collision layer; 4 is a guide rail; 5 is a pry body; 51 is a roller; 52 is a brake mechanism; 6 is a lateral limiter; 7 is a locking system; 71 is a hydraulic cylinder; 72 is a piston rod; 73 is a locking plug; 74 is a guide lock beam; 741 is a guide beam; 742 is a rigid cylinder; 743 is a locking hole.
Detailed Description
The invention is further explained with reference to the drawings and the embodiments.
As shown in fig. 1, the present invention mainly comprises a spring damping system 1; a rigid connecting rod 11; a rigid connection plate 12; a coil spring 13; a viscous damper 14; a main shaft transmission system 2; a drive shaft 21; a driven shaft 22; an axial stopper 3; an axial limit baffle 31; a viscous collision layer 32; a guide rail 4; a pry body 5; a roller 51; a brake mechanism 52; a lateral stopper 6; a locking system 7; the hydraulic cylinder 71; a piston rod 72; a locking plug 73; a pilot lock beam 74; is a guide beam 741; a rigid cylinder 742; locking apertures 743.
As shown in fig. 1, the TMD main body of the present invention is composed of a spring damping system 1 and a pry 5, the spring damping system 1 is installed on the inner wall of the front part (end close to the hub) of the fan nacelle, and is composed of a rigid connecting rod 11, a rigid connecting plate 12, a coil spring 13 and a viscous damper 14, one end of the rigid connecting rod 11 is fixed on the inner wall of the front part of the fan nacelle, the other end of the rigid connecting rod is fixed with the coil spring 13 and the viscous damper 14 through the rigid connecting plate 12, and the other ends of the coil spring 13 and the viscous damper 14 are connected with the pry 5, so as to form a passive TMD system.
As shown in fig. 1, the prying body 5 of the present invention prys the gear box, the brake disc, the generator and other devices inside the nacelle into a whole, and as the mass block of the TMD, the internal space of the nacelle is fully utilized, and the mass block additionally configured with the TMD and the corresponding installation space requirements are saved. During specific design, according to the mass of the pry body 5, based on a passive TMD design theory, the optimal parameters of the spiral spring 13 and the viscous damper 14 are matched, so that the optimal vibration control effect is achieved.
As shown in figure 1, the fan main shaft transmission system 2 comprises a driving shaft 21 and a driven shaft 22, wherein a key groove is formed in the driving shaft 21 in the axial direction, a spline is arranged outside the driven shaft 22, the driving shaft 21 and the driven shaft 22 are in clearance fit to form spline pair connection, the driven shaft 22 can be allowed to slide along the key groove of the driving shaft 21 while the rotation torque of a hub is transmitted, the tail end of the driven shaft 22 is connected with a gear box, power is transmitted to the gear box, and therefore normal power generation and relative movement of TMD of a fan are guaranteed.
As shown in fig. 1, a roller 51 and a brake mechanism 52 are installed at the bottom of a pry body 5 of the invention, a guide rail 4 is arranged on a bottom plate inside a fan cabin along the horizontal axial direction of a fan, and the roller 51 and the guide rail 4 form a guide rail pair, so that the pry body can freely move along the horizontal axial direction of the fan, when the pry body 5 needs to stop moving, the brake mechanism 52 can be controlled by a control signal to lock the roller 51, and the roller 51 is controlled not to roll.
As shown in fig. 1, axial limiters 3 are arranged at the front end and the rear end of a bottom plate in a fan cabin, each axial limiter 3 is composed of an axial limiting baffle 31 and a viscous collision layer 32, the axial limiting baffle 31 can limit the prying body 5 to slide greatly, and the phenomenon that the driven shaft 22 is separated from the driving shaft 21 to cause failure of power input of a fan hub is avoided; the prying body 5 can be prevented from colliding with other auxiliary equipment and structures in the engine room, and accidents are avoided; the viscous collision layer 32 can absorb the energy of the pry body 5 impacting the axial limiting baffle 31, and plays roles in protecting the axial limiter 31 and increasing energy consumption.
As shown in FIG. 2, the lateral limiting device 6 is arranged at the middle section of the top of the fan cabin, and the lateral limiting devices 6 are arranged at the two sides of the prying body 5, so that small-amplitude swinging of the prying body 5 caused by in-plane vibration of the fan can be limited, and the prying body 5 is prevented from derailing to influence normal operation of TMD.
As shown in fig. 1, the locking mechanism 7 is arranged at the top of the fan nacelle, the locking mechanism 7 is composed of a hydraulic cylinder 71, a piston rod 72 and a locking plug 73, and the locking mechanism 7 and a guide locking beam 74 installed at the top of the pry body 5 work in a matching manner, so that the TMD pry body can be locked.
As shown in fig. 3, the guide lock beam 74 is composed of a guide beam 741, a rigid cylinder 742 and a lock hole 743, the guide beam 741 is symmetrically arranged with respect to the rigid cylinder 742, the length of the guide beam is greater than half of the maximum movement amplitude of the pry body 5, the lock hole 743 is opened inside the rigid cylinder 742, and the end of the lock hole 743 is chamfered to facilitate the smooth insertion of the lock plug 73. During engineering application and installation, when the pry body 5 is in a static balance position, the locking hole 743 and the locking plug 73 can be completely centered.
When the fan encounters an extreme working condition or the TMD is required to stop working for shutdown maintenance, the hydraulic cylinder 71 is controlled by a control signal to drive the piston rod 72 to extend, so that the locking plug 73 slightly touches the guide beam 741, when the prying body 5 slides to the position where the locking plug 73 is aligned with the locking hole 743, the hydraulic cylinder 71 continues to drive the piston rod 72 to extend until the locking plug 73 is inserted into the bottom of the locking hole 743, and the prying body 5 is locked at a static balance position by further increasing the pressure of the hydraulic cylinder 71; after the pry body 5 stops moving, the brake mechanism 52 can be triggered to brake through the control signal, so that the roller 51 is locked, the pry body 5 is further locked firmly, and the fixing of the TMD system is realized.
When the fan needs TMD intervention to control the vibration of the fan when the fan normally operates again, the locking mechanism 7 is controlled by a control signal to retract the piston rod 72, the locking plug 73 is pulled out of the locking hole 743, the roller 51 is released by the braking mechanism 52, and the prying body 5 reciprocates under the action of the inertia force and the restoring force of the spring again, so that the control of the vibration of the fan in the out-of-plane direction is realized.
Through the scheme, the passive TMD provided by the invention is installed, is not influenced by the yaw of the fan, can obviously relieve the vibration level of the main vibration direction of the fan, and reduces the fatigue damage of the fan structure, thereby greatly improving the safety and reliability of the service of the fan structure.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A tuned mass damper for controlling out-of-plane vibration of a fan structure comprises a spring damping system and a pry body, wherein the spring damping system is connected between the front part of a fan cabin and the pry body. The method is characterized in that:
the spring damping system comprises a rigid connecting rod, a rigid connecting plate, a spiral spring and a viscous damper, one end of the rigid connecting rod is fixed at the front part of the fan cabin, the other end of the rigid connecting rod is fixedly connected with one end of the spiral spring and one end of the viscous damper through the rigid connecting plate, and the other ends of the spiral spring and the viscous damper are connected with the prying body to form the passive tuned mass damper;
the prying body is integrally used as a mass block of the passive tuned mass damper, and fan cabin internal equipment including a gear box, a brake disc and a generator is arranged in the prying body.
2. The tuned mass damper according to claim 1, further comprising a guide lock beam for locking the pry body and a locking mechanism, wherein the locking mechanism comprises a hydraulic cylinder, a piston rod and a locking plug, and is fixed above the guide lock beam, and the locking mechanism cooperates with the guide lock beam fixed to the top of the pry body; the guide locking beam comprises a guide beam, a rigid cylinder and locking holes, the guide beam is symmetrically arranged relative to the rigid cylinder, the length of the guide beam is larger than half of the maximum movement amplitude of the prying body, the locking holes are formed in the rigid cylinder, chamfers which are beneficial to smooth insertion of locking plugs are arranged at the end parts of the locking holes, and the hydraulic cylinder is used for driving the piston rod to extend when locking is needed, so that the locking plugs are inserted into the locking holes.
3. The tuned mass damper according to claim 1, further comprising an axial stop comprised of an axial stop baffle for limiting substantial sliding of the sled and a viscous bump layer; the viscous collision layer can absorb the energy of the prying body impacting the axial limiting baffle, and the axial limiter is protected and the energy consumption is increased.
4. The tuned mass damper according to claim 1, further comprising lateral stops disposed on both sides of the pry.
5. The tuned mass damper according to any of claims 1 to 4, wherein a roller and detent mechanism is provided at the bottom of the pry body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010921986.1A CN112081864A (en) | 2020-09-04 | 2020-09-04 | Tuned mass damper for out-of-plane vibration control of fan structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010921986.1A CN112081864A (en) | 2020-09-04 | 2020-09-04 | Tuned mass damper for out-of-plane vibration control of fan structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112081864A true CN112081864A (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010921986.1A Pending CN112081864A (en) | 2020-09-04 | 2020-09-04 | Tuned mass damper for out-of-plane vibration control of fan structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112081864A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115843527A (en) * | 2023-03-03 | 2023-03-28 | 安徽中舟振兴农业科技有限公司 | Automatic change equipment of ploughing |
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|---|---|---|---|---|
| CN101737246A (en) * | 2008-11-07 | 2010-06-16 | 通用电气公司 | Drive train supporting structure for a wind turbine |
| JP2012159034A (en) * | 2011-01-31 | 2012-08-23 | Tokai Rubber Ind Ltd | Vibration control boss for fan |
| CN103452768A (en) * | 2012-05-28 | 2013-12-18 | 北京能高自动化技术股份有限公司 | Fan tower load shedding method based on separated engine room |
| CN105650194A (en) * | 2016-03-07 | 2016-06-08 | 山东大学 | Blade type energy-consuming and tuning vibration damper |
| CN205776858U (en) * | 2016-05-25 | 2016-12-07 | 哈尔滨工程大学 | Viscoelasticity collision tuned mass damper |
| CN108953463A (en) * | 2018-09-25 | 2018-12-07 | 南京林业大学 | A kind of double guide rail TMD dissipative damping devices applied to wind power generating set |
-
2020
- 2020-09-04 CN CN202010921986.1A patent/CN112081864A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737246A (en) * | 2008-11-07 | 2010-06-16 | 通用电气公司 | Drive train supporting structure for a wind turbine |
| JP2012159034A (en) * | 2011-01-31 | 2012-08-23 | Tokai Rubber Ind Ltd | Vibration control boss for fan |
| CN103452768A (en) * | 2012-05-28 | 2013-12-18 | 北京能高自动化技术股份有限公司 | Fan tower load shedding method based on separated engine room |
| CN105650194A (en) * | 2016-03-07 | 2016-06-08 | 山东大学 | Blade type energy-consuming and tuning vibration damper |
| CN205776858U (en) * | 2016-05-25 | 2016-12-07 | 哈尔滨工程大学 | Viscoelasticity collision tuned mass damper |
| CN108953463A (en) * | 2018-09-25 | 2018-12-07 | 南京林业大学 | A kind of double guide rail TMD dissipative damping devices applied to wind power generating set |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115843527A (en) * | 2023-03-03 | 2023-03-28 | 安徽中舟振兴农业科技有限公司 | Automatic change equipment of ploughing |
| CN115843527B (en) * | 2023-03-03 | 2023-10-20 | 安徽中舟振兴农业科技有限公司 | Automatic change tilling equipment |
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Application publication date: 20201215 |
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