Summary of the invention
The embodiment of the present invention provides a kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method, to guarantee the normal operation of wind power generating set.
For achieving the above object, embodiments of the invention adopt following technological scheme:
A wind power generating set lighting protection device, comprises friction plate, and described friction plate one end is connected with into end flange, and the below of the described friction plate the other end is provided with the conductive plate doing relative motion with described friction plate, is provided with out end flange below described conductive plate;
Describedly enter end flange and made by insulating material, and be arranged on directly or indirectly and on bearing, make described friction plate and described bearing insulation; Describedly go out end flange and made by conductive material, and be indirectly arranged on and on described bearing, make described conductive plate and described bearing insulation.
Further, described friction plate, described conductive plate and described in go out end flange from top to bottom according to same axis setting, described friction plate be located at described conductive plate a side, described in go out another opposite side that end flange is located at described conductive plate, and described, go out in end flange to be provided with the profile of tooth projection around described conductive plate, described profile of tooth projection relative with described friction plate and and described friction plate between there is predetermined gap;
When lightning current exceeds the bearing load of described conductive plate, lightning current punctures the electric discharge of described predetermined gap by described profile of tooth projection to be released to go out in end flange to described, finally releases to greatly.
Optionally, described profile of tooth projection has conductive tip.
Wherein, the predetermined gap between the conductive tip of described profile of tooth projection and described friction plate is 1-3mm.
In addition, described in enter end flange and be arranged on directly or indirectly in the inner ring of bearing or the one of outer ring, described in go out end flange and be indirectly arranged in the outer ring of bearing or the another one of inner ring;
When described while entering end flange rotation, described in go out end flange and keep static; Or
When described while going out end flange rotation, described in enter end flange and keep static.
Optionally, described device also comprises described in being arranged at and goes out the Compress Spring in end flange Vertical direction, described in one end of described Compress Spring is connected with, goes out end flange, and the other end of described Compress Spring is connected with spring seat board.
Wherein, described friction plate, described conductive plate and described in go out end flange and be successively set on the same axis, described Compress Spring is enclosed within the outside of described axle.
Optionally, described spring seat board is arranged on described bearing or on the component that are connected with described bearing directly or indirectly, and the material of described spring seat board is insulating material.
A wind power generating set, comprises the wind power generating set lighting protection device that above-mentioned arbitrary technological scheme provides.
A lightening arresting method for wind power generating set, described wind power generating set has the wind power generating set lighting protection device that above-mentioned arbitrary technological scheme provides, and the lightening arresting method of described wind power generating set comprises:
The blade arrester that utilization is installed on fan blade receives lightning current, and by lead-in cable line, lightning current is introduced on described friction plate;
By described friction plate, with the relative rotation of described conductive plate and then lightning current is introduced on described conductive plate, finally by going out end flange described in being connected with described conductive plate, release to greatly.
Further, when the intensity of lightning current receiving when described blade arrester exceeds the bearing load of described conductive plate, when lightning current being introduced on described conductive plate by described friction plate with the relative rotation of described conductive plate, described method also comprises:
By described, go out the predetermined gap that profile of tooth projection that end flange is provided with punctures between described profile of tooth projection and described friction plate and discharge, and go out in end flange by lightning current and then described in being introduced into, finally release to greatly.
The embodiment of the present invention provides a kind of wind power generating set lighting protection device, wind power generating set and lightening arresting method, compare with existing wind power generating set lighting protection device, the lighting protection device that the embodiment of the present invention provides only need be installed in the end flange that goes out that enters end flange and be connected with conductive plate that is connected with friction plate on bearing, and the relative spin friction that relatively rotarily drives friction plate and conductive plate by the inside and outside circle of bearing just can cause out lightning current in end flange and effectively release.This apparatus structure is simple, can be applied in comparatively easily in each large bearing of wind power generating set it is protected, and guarantees the normal operation of wind power generating set.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technological scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiments.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment who obtains under creative work prerequisite, belong to the scope of protection of the invention.
The wind power generating set lighting protection device, wind power generating set and the lightening arresting method that the embodiment of the present invention are provided below in conjunction with accompanying drawing are described in detail.
A kind of structural representation of the wind power generating set lighting protection device that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, the embodiment of the present invention provides a kind of wind power generating set lighting protection device, comprises friction plate 3, and friction plate 3 one end are connected with into end flange 1, the below of friction plate 3 the other ends is provided with the conductive plate 5 doing relative motion with friction plate 3, is provided with out end flange 7 below conductive plate 5; Enter end flange 1 and made by insulating material, and be arranged on directly or indirectly and on bearing, make friction plate 3 and bearing insulation; Go out end flange 7 and made by conductive material, and be indirectly arranged on and on bearing, make conductive plate 5 and bearing insulation.
On the basis of said structure, when meeting thunderbolt, lightning current is introduced on friction plate 3, and the relative rotation by friction plate 3 and conductive plate 5 and then be introduced on conductive plate 5, finally by the end flange 7 that goes out being connected with conductive plate 5, releases to greatly.
The embodiment of the present invention provides a kind of wind power generating set lighting protection device, compare with existing wind power generating set lighting protection device, the lighting protection device that the embodiment of the present invention provides only need be installed in the end flange 7 that goes out that enters end flange 1 and be connected with conductive plate 5 that is connected with friction plate 3 on bearing, and the relative spin friction that relatively rotarily drives friction plate 3 and conductive plate 5 by the inside and outside circle of bearing just can cause out lightning current in end flange 7 and effectively release.This apparatus structure is simple, can be applied in comparatively easily in each large bearing of wind power generating set it is protected, and guarantees the normal operation of wind power generating set.
Friction plate 3, conductive plate 5 and go out end flange 7 from top to bottom according to same axis setting in above-described embodiment, friction plate 3 be located at conductive plate 5 a side, go out another opposite side that end flange 7 is located at conductive plate 5, and going out in end flange 7, to be provided with the profile of tooth projection 6 around conductive plate 5, profile of tooth projection 6 relative with friction plate 3 and and friction plate 3 between there is predetermined gap; When lightning current exceeds the bearing load of conductive plate 5, lightning current punctures predetermined gap (not shown) electric discharge by profile of tooth projection 6 releases to going out in end flange 7, finally by going out the extraction cable connecting in end flange 7, releases to greatly.
By friction plate 3, conductive plate 5 and go out end flange 7 and such dock structure is set according to same axis from top to bottom, mainly consider two aspects, (1) make to go out in end flange 7 the profile of tooth projection 6 arranging relative completely with friction plate 3, can guarantee like this when lightning current exceeds the bearing load of conductive plate 5, lightning current just can by profile of tooth projection 6 puncture and friction plate 3 between predetermined gap discharge; (2) in the time of can making conductive plate 5 carry out relative spin friction with friction plate 3, there is larger area of contact, can contact more fully.
Wherein, it is comparatively thinner that the thickness of conductive plate 5 can arrange, can make like this friction plate 3, conductive plate 5 and go out the structure of the conductive mechanism that end flange 7 forms compacter, conductive plate 5 can also be embedded in out in end flange 7, can make like this conductive plate 5 be fixed on out better in end flange 7, so just can avoid well conductive plate 5 to be moved in the process of friction.It is comparatively longer that friction plate 3 also can arrange, like this at friction plate 3 when rubbing with conductive plate 5, can ensure that the operable time of friction material on friction plate 3 is more longer, thereby reduce the replacement frequency of friction plate 3.
In the present embodiment, profile of tooth projection 6 has conductive tip.The effect of conductive tip is for conductive plate 5 is in conduction during lightning current, if lightning current exceeds the bearing load of conductive plate 5, conductive tip can puncture and friction plate 3 between predetermined gap assist conductive plate 5 to discharge.For can effectively ensure that conductive tip can puncture and friction plate 3 between predetermined gap, the predetermined gap between the conductive tip of profile of tooth projection 6 and friction plate 3 is 1-3mm.
In the present embodiment, enter end flange 1 and go out on the inner ring or outer ring that end flange 7 need to be connected in bearing, its concrete Placement is: enter end flange 1 and be arranged on directly or indirectly in the inner ring of bearing or the one of outer ring, go out end flange 7 and be indirectly arranged in the outer ring of bearing or the another one of inner ring; When entering end flange 1 rotation, go out end flange 7 and keep static; Maybe, when going out end flange 7 rotation, enter end flange 1 and keep static.
It should be noted that, " go out end " and " entering end " do not limit the use occasion of flange, that is to say, goes out end flange 7 and enters end flange 1 and can exchange use, flange can be used as into end flange 1 use " to go out end ", and " entering end " flange also can be used as out end flange 7 uses.
By above-mentioned Placement, just can be driven and entered friction plate 3 that end flange 1 is connected and do relative rotary motion with going out the conductive plate 5 that end flange 7 is connected,, when friction plate 3 rotation, conductive plate 5 keeps static; Or when conductive plate 5 rotation, friction plate 3 keeps static, thereby makes friction plate 3 and conductive plate 5 can realize dynamic conduction lightning current.Wherein, enter end flange 1 for insulating material, can be connected with bearing directly or indirectly, so that friction plate 3 and bearing insulation; Go out end flange 7 for conductive material, need indirectly be connected with bearing via the component of an insulating material, so that conductive plate 5 and bearing insulation; And, friction plate 3 and the component that enter end flange 1 and insulating material with go out end flange 7 and can be connected by connection part (not shown).Connection part can connect for bolt and nut, can be also that riveted joint, bearing pin connect etc.
In another embodiment of the present invention, as shown in Figure 2, (equal consistent with representative in Fig. 1 of the component of the label of each component order and representative in Fig. 2, just before label, all having added 2) device that provides of the present embodiment also comprises the Compress Spring 28 being arranged at out in end flange 27 Vertical direction, one end of Compress Spring 28 is connected with out end flange 27, and the other end of Compress Spring 28 is connected with spring seat board 29.Constant in order to guarantee the impacting force of Compress Spring 28, can realize close contact and the Compress Spring 28 of friction plate 23 and conductive plate 25 avoids being offset when compression, friction plate 23, conductive plate 25 and go out end flange 27 and be successively set on the same axis, and Compress Spring 28 is enclosed within to the outside of axle.So just can guarantee well friction plate 23, conductive plate 25 and go out end flange 27 to realize in vertical direction close contact.Further, spring seat board 29 is arranged on bearing or on the component that are connected with bearing directly or indirectly, and the material of spring seat board 29 is insulating material.Spring seat board 29 insulation, can guarantee spring seat board 29 non-conducting electricity when being directly connected with bearing.
It should be noted that, this lighting protection device shown in Fig. 2 can be applicable in the main bearing of the main bearing in wind power generating set or subtract/speed increaser, because above-mentioned these main bearings need frequent rotation in wind-power electricity generation, and to having relatively high expectations of the compression effectiveness of each parts in lighting protection device, so can ensure preferably the close contact of each parts in lighting protection device by Compress Spring 28 is set in device, guarantee, when meeting with thunderbolt, in above-mentioned main bearing, can effectively release to lightning current.Lighting protection device shown in Fig. 1 is the simple model of the lighting protection device shown in Fig. 2, omits Compress Spring 28, spring seat board 29 and runs through the axle in this lighting protection device.The lighting protection device of such modification being can be applicable to driftage bearing, the pitch variable bearings of wind power generating set and in power generation process, do not need often rotation and compress effect does not need to go in too high bearing, thereby can ensure that each bearing can also save the structure space of wind power generating set when carrying out effectively electric discharge.
Accordingly, the invention provides a kind of wind power generating set, comprise the wind power generating set lighting protection device that the various embodiments described above of the present invention provide, because the lighting protection device of installing in wind power generating set is simple in structure, only the end flange 7 that goes out that enters end flange 1 and be connected with conductive plate 5 that is connected with friction plate 3 need be installed on bearing, the relative spin friction that relatively rotarily drives friction plate 3 and conductive plate 5 by the inside and outside circle of bearing just can cause out lightning current in end flange 7 and effectively release.For wind power generating set, can make each the large bearing in wind power generating set when meeting with thunderbolt, lightning current be released effectively in this device, thereby guarantee the normal operation of wind power generating set.
Accordingly, the invention provides a kind of lightening arresting method of wind power generating set, this wind power generating set has the wind power generating set lighting protection device that the various embodiments described above of the present invention provide, and as shown in Figure 3, the lightening arresting method of this wind power generating set comprises:
Step 31, utilizes the blade arrester being installed on fan blade to receive lightning current, and by lead-in cable line, lightning current is introduced on friction plate 3;
Step 32,, finally releases to greatly by the end flange 7 that goes out being connected with conductive plate 5 with the relative rotation of conductive plate 5 and then lightning current is introduced on conductive plate 5 by friction plate 3.
The embodiment of the present invention provides a kind of lightening arresting method of wind power generating set, this lightening arresting method is to realize by the wind power generating set lighting protection device of installing in this wind power generating set, because this lighting protection device only need be installed in the end flange 7 that goes out that is connected with conductive plate 5 end flange 1 that enters that is connected with friction plate 3 on bearing, in bearing, the relative spin friction that relatively rotarily drives friction plate 3 and conductive plate 5 of outer ring just can cause out lightning current in end flange 7 and effectively release, therefore this apparatus structure is simple, so when utilizing this device that each macro-axis is accepted the lightning current of receiving and released, the lightening arresting method being undertaken by this device is simple to operate, practical.
In the present embodiment, when the intensity of lightning current receiving when blade arrester exceeds the bearing load of conductive plate 5, in step 32, when lightning current being introduced on conductive plate 5 by friction plate 3 with the relative rotation of conductive plate 5, the method also comprises:
Step 33, discharges by going out the predetermined gap that profile of tooth projection 6 that end flange 7 is provided with punctures between profile of tooth projection 6 and friction plate 3, and by lightning current and then be introduced into out in end flange 7, finally releases to greatly.
Because the size of conductive plate 5 is to determine according to the intensity of lightning current, when prominent chance lightning current is excessive and surpass the bearing load of conductive plate 5, the predetermined gap that can puncture between profile of tooth projection 6 and friction plate 3 by profile of tooth projection 6 is assisted conductive plate 5 electric discharges, thereby guarantees the normal operation of each large bearing.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all mode of executions.And the apparent variation of being extended out thus or the change protection domain in the invention still.