CN203285904U

CN203285904U - Tuned mass damper for wind generating set

Info

Publication number: CN203285904U
Application number: CN2013202654631U
Authority: CN
Inventors: 刘景春
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-16
Filing date: 2013-05-16
Publication date: 2013-11-13
Anticipated expiration: 2023-05-16

Abstract

The utility model relates to a tuned mass damper for a wind generating set. The tuned mass damper for the wind generating set comprises a mass block, an oscillating bar, a mass tray, a locating block, a truss, a safety isolation device and a weak damping system. The lower end of the oscillating bar is fixedly connected with the mass tray, the mass block comprises stackable cutaway disks, the notches of the cutaway disks comprise through grooves and locating grooves, the cutaway disks are inserted into the oscillating bar through the through grooves of the cutaway disks and are placed on the mass tray in a stacked mode, and the locating block is placed in the locating grooves to enable the cutaway disks to be fixed relative to the oscillating bar. A circular hook is arranged on the top portion of the oscillating bar, and is connected with the truss in a hooking mode, and the safety isolation device is arranged outside the truss. The damping ratio of the weak damping system is smaller than 0.3. A 1.5MW wind generating set is taken for example, when the mass block of the damper is 2-ton lead and the oscillating bar is 1.8m long, the first-order vibration damping ratio of a tower is increased by 0.02, the damping ratio is 400% larger than that of 0.5% of an original steel structure, the transmission chain load and the tower load of the wind generating set can be effectively lowered, and the steel quantity used by the tower is predicted to be saved by 10 tons.

Description

The tuned mass damper, TMD that is used for wind power generating set

Technical field

The utility model belongs to the vibration damping control field, relates to a kind of tuned mass damper, TMD for wind power generating set.

Background technique

CN201110358368 discloses a kind of cycloidal type wind-driven generator tower frame shock absorbing device, and it comprises mass block and wire rope, is connected with rubber rod on mass block, at steel wire loop, is provided with connector, and connector is threaded with mass block.This vibration damping equipment, by the swing absorbing structure vibrational energy of mass block, consumes energy by the axial deformation of rubber rod simultaneously.There are the following problems for this vibration damping equipment: 1. wire rope and mass block connecting end easily rub and produce wearing and tearing, have potential safety hazard; 2. mass block is spherical, and the mass block wobble amplitude requires high to horizontal space, be unfavorable for installing and using in wind power generating set; 3., because blower fan structure characteristic quality-determining piece quality is at least 2 tons,, if adopt the integral type mass block, can cause production, difficulty is installed, and mass block weight is non-adjustable.

The model utility content

The utility model provides a kind of tuned mass damper, TMD of mono-pendulum type for wind power generating set, its solve the wire rope of prior art easy to wear, have a potential safety hazard, spherical mass block wobble amplitude to horizontal space require high, be unfavorable for installing and using in wind power generating set, the integral type mass block is produced, difficulty is installed, and the nonadjustable problem of mass block weight.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: the mono-pendulum type tuned mass damper, TMD comprises mass block, fork, quality pallet, positioning block, truss, safety insulating device, underdamping system; The fork lower end is fixedly connected with the quality pallet; Mass block is at least one stackable cutaway disk, the breach of cutaway disk comprises the locating slot that inserts the groove of fork for edge perpendicular to the fork axial direction and be used for the placement positioning piece, at least one cutaway disk is placed on the quality pallet perpendicular to fork axial direction insertion fork and stacked piling up by its groove edge, and positioning block is inserted locating slot makes cutaway disk relative with fork fixing; The fork top is the circle hook, and circle hook and truss articulate, truss peripheral hardware safety insulating device; The underdamping system is used for energy dissipation, and underdamping system damping ratio is less than 0.3.

The mass block material is preferably high desnity metal, more preferably lead or iridium.

The underdamping system can be the little damping device that is connected with quality pallet or fork, and little damping device is connected with truss; Little damping device can be little damping weak spring or the hollow damper of rubber formula or hydraulic damper or gas bar damper.Perhaps the underdamping system by the round hook that has each other frictional damping and truss and/or exist each other the mass block of frictional damping and fork to form, need not additionally to add little damping device.

Tuned mass damper, TMD preferably is placed in wind power generating set tower top position of platform or position, top, cabin.

Being preferably bolt between fork and quality pallet is connected or welds.

Safety insulating device is preferably cylindrical purse seine or casing.

Compared with prior art, the beneficial effects of the utility model: 1. abandoned wire rope and connector construction, the potential safety hazard of having avoided steel rope abrasion to cause; 2. the stacking mass block integral body that forms of some cutaway disks is cylindrical, and cylindrical mass block wobble amplitude is less than the spherical mass block of equal quality to the requirement of horizontal space, is more conducive to install and use in wind power generating set; 3. because being that some cutaway disks are stacking, mass block forms, so the production of mass block, easy for installation, mass block weight is adjustable; When between fork and quality pallet when being threaded, oscillating bar length is adjustable; 5. mass block is selected high desnity metal, can reduce oscillating bar length, saves damper and takes up space, and improves the power absorption effect with damper under volume; 6. take the 1.5MW wind power generating set as example, when the damper mass block is that 2 tons of lead and fork are while being 1.8 meters, through simulation calculation, pylon single order modal damping is than increasing by 0.02, increase nearly 400% than the damping ratio of original steel structure 0.5%, can effectively reduce driving chain of wind generating set load and pylon load, estimate to save 10 tons of pylon steel using amounts.

Description of drawings

Fig. 1 is the erection drawing of the utility model tuned mass damper, TMD;

Fig. 2 is the stereogram of a cutaway disk of the utility model mass block;

Fig. 3 is the stereogram of the utility model a positioning block;

Fig. 4 is the stereogram of the utility model fork;

Fig. 5 is the stereogram of the utility model quality pallet;

Fig. 6 is the stereogram of the utility model quality circle hook.

In figure, 1-circle hook, 2-fork, 3-positioning block, 4-cutaway disk, 5-quality pallet.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further illustrated.

The mono-pendulum type tuned mass damper, TMD, comprise mass block, fork 2, quality pallet 5, positioning block 3, truss, safety insulating device, underdamping system; Fork 2 lower ends are fixedly connected with quality pallet 5; Mass block is at least one stackable cutaway disk 4, the breach of cutaway disk 4 comprises the locating slot that inserts the groove of forks 2 for edge perpendicular to fork 2 axial directions and be used for placement positioning piece 3, at least one cutaway disk 4 is placed on quality pallet 5 perpendicular to fork 2 axial directions insertion forks 2 and stacked piling up by its groove edge, and positioning block 3 is inserted locating slot makes cutaway disk 4 relative with fork 2 fixing; Fork 2 tops articulate with truss for circle hook 1, circle hook 1, truss peripheral hardware safety insulating device; The underdamping system is used for energy dissipation, and underdamping system damping ratio is less than 0.3.

The underdamping system can be the little damping device that is connected with quality pallet 5 or fork 2, and little damping device is connected with truss; Little damping device can be little damping weak spring or the hollow damper of rubber formula or hydraulic damper or gas bar damper.Perhaps the underdamping system with truss and/or exist each other the mass block of frictional damping and fork 2 to form, need not additionally to add little damping device by the round hook 1 that has each other frictional damping.

Being preferably bolt between fork 2 and quality pallet 5 is connected or welds.

Safety insulating device is preferably cylindrical purse seine or casing.

Claims

1. a mono-pendulum type tuned mass damper, TMD, comprise mass block, it is characterized in that, also comprises fork, quality pallet, positioning block, truss, safety insulating device, underdamping system; The fork lower end is fixedly connected with the quality pallet; Mass block is at least one stackable cutaway disk, the breach of cutaway disk comprises the locating slot that inserts the groove of fork for edge perpendicular to the fork axial direction and be used for the placement positioning piece, at least one cutaway disk is placed on the quality pallet perpendicular to fork axial direction insertion fork and stacked piling up by its groove edge, and positioning block is inserted locating slot makes cutaway disk relative with fork fixing; The fork top is the circle hook, and circle hook and truss articulate, truss peripheral hardware safety insulating device; The underdamping system is used for energy dissipation, and underdamping system damping ratio is less than 0.3.

2. mono-pendulum type tuned mass damper, TMD according to claim 1, it is characterized in that: the mass block material is high desnity metal.

3. mono-pendulum type tuned mass damper, TMD according to claim 2, it is characterized in that: the mass block material is lead or iridium.

4. mono-pendulum type tuned mass damper, TMD according to claim 1 is characterized in that: the little damping device of underdamping system for quality pallet or fork, being connected, little damping device is connected with truss.

5. mono-pendulum type tuned mass damper, TMD according to claim 4, it is characterized in that: little damping device is little damping weak spring or the hollow damper of rubber formula or hydraulic damper or gas bar damper.

6. mono-pendulum type tuned mass damper, TMD according to claim 1, it is characterized in that: the underdamping system is by the round hook that has each other frictional damping and truss and/or exist each other the mass block of frictional damping and fork to form.

7. mono-pendulum type tuned mass damper, TMD according to claim 1 is characterized in that: tuned mass damper, TMD is placed in wind power generating set tower top position of platform or position, top, cabin.

8. mono-pendulum type tuned mass damper, TMD according to claim 1 is characterized in that: be connected or weld for bolt between fork and quality pallet.

9. mono-pendulum type tuned mass damper, TMD according to claim 1, it is characterized in that: safety insulating device is cylindrical purse seine or casing.