Grounding mechanism for lightning protection of wind power generation equipment

Abstract

The utility model relates to the technical field of wind power generation, and particularly discloses a lightning protection grounding mechanism for wind power generation equipment, which comprises a generator main body, fan blades are arranged on the generator main body, Y-shaped seats are fixedly arranged on the fan blades, sliding seats are uniformly arranged on the Y-shaped seats, sliding supports are arranged on the sliding seats in a sliding manner, and the sliding supports are arranged on the generator main body. A carbon brush is installed on the sliding support, springs are symmetrically installed on the sliding support, a balancing weight is fixedly installed on the sliding support, a round seat is fixedly installed on the generator body, a sliding ring is installed on the round seat in a sliding mode, and a conducting ring is fixedly installed on the sliding ring. When thunderstorm weather occurs, the wind speed will increase, the carbon brush makes contact with the conducting ring, the fan blades will guide current to the carbon brush, then the current is guided to the conducting ring through the carbon brush, high temperature generated by lightning strokes will detonate explosives, the grounding nails will be pushed to pierce the covering film to be inserted into the ground, and the current of the lightning strokes can be guided to the ground. The effect of preventing the fan blades from being damaged by lightning stroke is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation technical field especially relates to a wind power generation equipment lightning protection ground connection mechanism. BACKGROUND

[0002] In the field of wind power generation, it is crucial to ensure the lightning protection safety of wind power generation equipment, and the ground connection mechanism is a key part to achieve this goal; in practical application, a wind power generation equipment lightning protection ground connection mechanism usually needs the following technologies:

[0003] 1. Ground connection technology: use various ground conductors and connection components, such as flat steel, round steel, and special ground bolts, wire clamps, etc., to achieve reliable electrical connection between wind power generation equipment and the ground;

[0004] 2. Ground electrode technology: use different types of ground electrodes, such as vertical ground electrodes (such as copper-coated steel ground electrodes, angle steel ground electrodes), horizontal ground electrodes (such as galvanized flat steel laid horizontally), etc., to increase the contact area of the grounding system with the ground and reduce the grounding resistance;

[0005] 3. Detection and maintenance technology: use ground resistance testers, insulation resistance testers, and other equipment to regularly detect the ground resistance, insulation performance, and other parameters of the ground connection mechanism.

[0006] The existing lightning protection grounding device, since the fan part is a rotatable component, the lightning rod and other grounding devices are installed on the generator set, and when the fan part rotates, the tip is closer to the cloud layer and is more likely to be struck by lightning, which is prone to damage. UTILITY MODEL CONTENTS

[0007] In view of the deficiencies of the prior art, the utility model provides a wind power generation equipment lightning protection ground connection mechanism to solve the technical problem that the existing lightning protection grounding device, since the fan part is a rotatable component, the lightning rod and other grounding devices are installed on the generator set, and when the fan part rotates, the tip is closer to the cloud layer and is more likely to be struck by lightning, which is prone to damage.

[0008] To achieve the above purpose, the utility model is implemented by the following technical solutions:

[0009] A wind power generation equipment lightning protection ground connection mechanism, comprising a generator main body, a fan blade installed on the generator main body, a Y-shaped seat fixedly installed on the fan blade, a sliding seat uniformly installed on the Y-shaped seat, a sliding bracket slidingly installed on the sliding seat, a carbon brush installed on the sliding bracket, a spring symmetrically installed on the sliding bracket, a counterweight fixedly installed on the sliding bracket, a circular seat fixedly installed on the generator main body, a sliding ring slidingly installed on the circular seat, and a conductive ring fixedly installed on the sliding ring; wherein the carbon brush is connected to the metal layer inside the fan blade through a wire.

[0010] Preferably: the threaded rod is rotatably installed on the circular seat and is symmetrically arranged; the threaded rod is threadedly connected with the slip ring.

[0011] Preferably: the bottom end of the generator body is uniformly and fixedly provided with a protective shell.

[0012] Preferably: the bottom end of the protective shell is fixedly provided with a film.

[0013] Preferably: the inside of the protective shell is fixedly provided with an explosion-proof metal sleeve; the explosion-proof metal sleeve is connected with the conductive ring through a wire.

[0014] Preferably: the inside of the explosion-proof metal sleeve is fixedly provided with a seamless steel pipe.

[0015] Preferably: the inside of the seamless steel pipe is fixedly provided with an explosive.

[0016] Preferably: the inside of the explosion-proof metal sleeve is provided with a grounding spike; the grounding spike is connected with the inner wall of the explosion-proof metal sleeve through a wire.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] When thunder and rain weather appears, the wind speed will increase, at this time, the rotating speed of the fan blade increases, the counterweight will generate greater centrifugal operation, the sliding support will slide outward to overcome the elastic force of the spring, the carbon brush will contact with the conductive ring, when the fan blade is struck by lightning, the fan blade will guide the current to the carbon brush, then the current is guided to the conductive ring through the carbon brush, then the current is transmitted to the explosion-proof metal sleeve through the wire between the conductive ring and the explosion-proof metal sleeve, the high temperature generated by the lightning will detonate the explosive, the pressure generated in the moment of the explosion of the explosive will push the grounding spike to pierce the film and insert into the earth, so that the current of the lightning can be guided to the earth, thereby the effect that the fan blade can be prevented from being damaged due to lightning is achieved.

[0019] In daily power generation operation, the rotating speed of the fan blade is relatively low, so the sliding support will not slide outward under the action of the elastic force of the spring, at this time, the carbon brush does not contact with the conductive ring, thereby unnecessary wear in daily use can be avoided.

[0020] In daily power generation operation, the grounding spike is located in the inside of the protective shell and does not directly contact with the soil of the earth, the grounding spike is wrapped in the protective shell and the film, thereby the corrosion of the soil environment to the grounding spike can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model and can be implemented according to the content of the specification, the following will be described in detail with the preferred embodiments of the utility model and the accompanying drawings.

[0022] Figure 1 It is the overall structure diagram of the utility model.

[0023] Figure 2 It is the structure diagram of Y-shaped seat of the utility model;

[0024] Figure 3 It is the structure diagram of sliding ring of the utility model;

[0025] Figure 4 It is the structure diagram of section of the utility model;

[0026] Figure 5 It is the structure diagram of sliding bracket of the utility model;

[0027] Figure 6 It is the structure diagram of section of explosion-proof metal sleeve of the utility model.

[0028] Legend: 1, generator main body; 2, fan blade; 3, Y-shaped seat; 4, sliding seat; 5, sliding bracket; 6, carbon brush; 7, spring; 8, counterweight; 9, round seat; 11, sliding ring; 12, conductive ring; 13, threaded rod; 14, protective shell; 15, film; 16, explosion-proof metal sleeve; 17, seamless steel pipe; 18, explosive; 19, ground nail. DETAILED DESCRIPTION

[0029] The embodiment of the application provides a lightning protection grounding mechanism for a wind power generation equipment, effectively solves the technical problems that, in the prior art, since the fan blade part is a rotatable part, lightning protection grounding devices such as lightning rods are all installed on the power generation set, and when the fan blade part rotates, the tip thereof is closer to the cloud layer and is more likely to be struck by lightning, and damage is likely to occur; when thunderstorm weather occurs, the wind speed will increase, at this time, the rotating speed of the fan blade increases, the counterweight generates greater centrifugal operation, the sliding bracket overcomes the elastic force of the spring and slides outward, the carbon brush contacts the conductive ring, when the fan blade is struck by lightning, the fan blade guides the current to the carbon brush, the carbon brush guides the current to the conductive ring, the current is transmitted to the explosion-proof metal sleeve through the wire between the conductive ring and the explosion-proof metal sleeve, the high temperature generated by the lightning strike ignites the explosive, the pressure generated in the moment of explosion of the explosive pushes the ground nail to pierce the film and insert into the ground, so that the current of the lightning strike can be guided to the ground, and the effect that the fan blade can be prevented from being damaged due to lightning strike is achieved; in daily power generation operation, the rotating speed of the fan blade is relatively low, so the sliding bracket will not slide outward under the action of the elastic force of the spring, at this time, the carbon brush does not contact the conductive ring, and unnecessary wear and tear in daily use can be avoided; in daily power generation operation, the ground nail is located in the interior of the protective shell and does not directly contact the soil of the ground, the ground nail is wrapped in the protective shell and the film, and corrosion of the ground nail caused by the soil environment can be avoided.

[0030] EMBODIMENT

[0031] As Figure 1 , Figure 2 , Figure 3、 Figure 4 、 Figure 5 and Figure 6 As shown in the technical scheme in the embodiments of the present application, the technical scheme effectively solves the technical problem that, in the prior lightning protection grounding device, since the fan blade part is a rotatable component, the lightning protection grounding device such as lightning rod is installed on the power generation set, and when the fan blade part rotates, the tip thereof is closer to the cloud layer and is more likely to be struck by lightning, and damage is likely to occur. The general idea is as follows:

[0032] In view of the problems in the prior art, the utility model provides a kind of lightning protection grounding mechanism for wind power generation equipment, including generator main body 1, fan blade 2 is installed on generator main body 1, Y-shaped seat 3 is fixedly installed on fan blade 2, sliding seat 4 is uniformly installed on Y-shaped seat 3, sliding bracket 5 is slidably installed on sliding seat 4, carbon brush 6 is installed on sliding bracket 5, spring 7 is symmetrically installed on sliding bracket 5, counterweight 8 is fixedly installed on sliding bracket 5.

[0033] Round seat 9 is fixedly installed on generator main body 1, sliding ring 11 is slidably installed on round seat 9, and conductive ring 12 is fixedly installed on sliding ring 11;Wherein, carbon brush 6 is connected with the metal layer in the inside of fan blade 2 by wire, screw rod 13 is rotatably installed on round seat 9 symmetrically, screw rod 13 is screw-connected with sliding ring 11, and protective shell 14 is uniformly fixedly installed on the bottom end of generator main body 1.

[0034] The bottom end of protective shell 14 is fixedly installed with film 15, and the inside of protective shell 14 is fixedly installed with explosion-proof metal sleeve 16;Wherein, explosion-proof metal sleeve 16 is connected with conductive ring 12 by wire, seamless steel pipe 17 is fixedly installed in the inside of explosion-proof metal sleeve 16, explosive 18 is fixedly installed in the inside of seamless steel pipe 17, and grounding spike 19 is installed in the inside of explosion-proof metal sleeve 16;Grounding spike 19 is connected with the inner wall of explosion-proof metal sleeve 16 by wire.

[0035] Generator main body 1: as the core part of wind power generation equipment, provide installation basis for fan blade 2, round seat 9, protective shell 14 and other components, support the operation of the whole wind power generation system;

[0036] Fan blade 2: installed on generator main body 1, driven by wind power to rotate, provide mechanical energy for generator, in lightning protection process, if fan blade 2 is struck by lightning, current can be guided to carbon brush 6, and the change of its rotating speed can trigger the action of sliding bracket 5 and carbon brush 6;

[0037] Y-shaped seat 3: fixedly installed on fan blade 2, provide installation position for sliding seat 4, make sliding seat 4 be able to be evenly distributed on fan blade 2 by 120 degrees, and then guarantee the reasonable layout of sliding bracket 5, carbon brush 6 and other components;

[0038] Slide 4: Installed on Y-shaped seat 3, it provides a sliding track for slide 5, allowing slide 5 to slide along slide 4 under the action of centrifugal force and spring force, thereby controlling whether carbon brush 6 contacts conductive ring 12. By unscrewing the bolt at the top of slide 4, slide 4 and related components can be pulled out for maintenance.

[0039] Slide 5: Slides on slide 4, bearing carbon brush 6, spring 7 and counterweight 8. Under the action of centrifugal force, it can overcome the elastic force of spring 7 and slide outward, so that carbon brush 6 contacts conductive ring 12; under the action of spring 7, it can slide inward, so that carbon brush 6 separates from conductive ring 12, thereby controlling the opening and closing of the current conduction path.

[0040] Carbon brush 6: Installed on slide 5, it is connected to the metal layer inside the fan blade 2 through wires. When slide 5 slides outward and carbon brush 6 contacts conductive ring 12, it can guide the lightning current on fan blade 2 to conductive ring 12. It is a key connection component for current conduction.

[0041] Spring 7: Symmetrically mounted on slide 5, providing inward elastic force to slide 5. When the fan blade 2 rotates at a low speed, it keeps slide 5 in a position where carbon brush 6 does not contact conductive ring 12, avoiding unnecessary wear of carbon brush 6. When the fan blade 2 rotates at a high speed, its elastic force can be overcome by the centrifugal force generated by counterweight 8, thereby allowing carbon brush 6 to contact conductive ring 12.

[0042] Counterweight 8: Fixedly installed on slide 5, it generates centrifugal force of different magnitudes when the fan blade 2 rotates. When the fan blade 2 rotates, the centrifugal force generated by counterweight 8 increases, which overcomes the elastic force of spring 7 and pushes slide 5 outward, so that carbon brush 6 contacts conductive ring 12, realizing the conduction of current conduction path.

[0043] Round seat 9: Fixedly installed on generator body 1, providing a sliding track for slip ring 11, allowing slip ring 11 to slide on round seat 9. At the same time, it is also the mounting base for threaded rod 13, through which the position of slip ring 11 can be adjusted.

[0044] Slip ring 11: Slidingly mounted on round seat 9, its position can be adjusted by threaded rod 13. Conductive ring 12 is fixedly mounted on slip ring 11. When carbon brush 6 contacts conductive ring 12, it is responsible for transmitting the current conducted by carbon brush 6 to conductive ring 12.

[0045] Conductive ring 12: It is fixedly installed on slip ring 11, receives lightning current conducted by carbon brush 6, and transmits the current to explosion-proof metal sleeve 16 through wire. It is an important intermediate link for the current to be conducted from fan blade 2 to grounding device.

[0046] Threaded rod 13: symmetrically rotatingly installed on the round seat 9, threadedly connected with the slip ring 11, by rotating the threaded rod 13, the position of the slip ring 11 on the round seat 9 can be adjusted, so as to adjust the relative position of the conductive ring 12 and the carbon brush 6, and ensure that the carbon brush 6 can accurately contact the conductive ring 12 when the rotating speed of the fan blade 2 changes;

[0047] Protective shell 14: uniformly fixedly installed at the bottom end of the generator main body 1, in daily power generation operation, the grounding nail 19 is wrapped inside, so that the grounding nail 19 is not directly in contact with the soil, and corrosion of the soil environment to the grounding nail 19 is avoided, and the grounding nail 19 is protected;

[0048] Film 15: fixedly installed at the bottom end of the protective shell 14, and the protective shell 14 protects the grounding nail 19 together, prevents the erosion of the soil environment, and when lightning occurs, the grounding nail 19 can pierce the film 15 and insert into the ground under the pressure generated by the explosion of the explosive 18;

[0049] Explosion-proof metal sleeve 16: fixedly installed inside the protective shell 14, connected with the conductive ring 12 through a wire, receives the lightning current conducted by the conductive ring 12, and at the same time, accommodates the seamless steel pipe 17, the explosive 18 and the grounding nail 19 inside, and when lightning occurs, the explosive 18 is exploded to push the grounding nail 19 to insert into the ground, and the grounding function is realized;

[0050] Seamless steel pipe 17: fixedly installed inside the explosion-proof metal sleeve 16, used for accommodating the explosive 18, providing a relatively closed space for the explosive 18, so that the pressure generated by the explosion of the explosive 18 can effectively push the grounding nail 19;

[0051] Explosive 18: fixedly installed inside the seamless steel pipe 17, exploded under the action of high temperature generated by lightning, instantaneously generates strong pressure to push the grounding nail 19 to pierce the film 15 and insert into the ground, so as to provide a grounding channel for the lightning current;

[0052] Grounding nail 19: installed inside the explosion-proof metal sleeve 16, connected with the inner wall of the explosion-proof metal sleeve 16 through a wire, pushed to insert into the ground when the explosive 18 is exploded, and the lightning current is guided to the ground, so as to realize the lightning protection grounding function of the wind power generation equipment, and protect the fan blade 2 and the entire power generation equipment from lightning damage.

[0053] Working principle:

[0054] First, in the daily power generation operation, the speed of the fan blade 2 is relatively low, so the slide 5 will not slide out under the elastic force of the spring 7, at this time the carbon brush 6 does not contact the conductive ring 12, which can avoid unnecessary wear in daily use, when it is a thunderstorm, the wind speed will increase, at this time the speed of the fan blade 2 increases, the counterweight 8 will generate greater centrifugal operation, so that the slide 5 overcomes the elastic force of the spring 7 and slides outwards, so that the carbon brush 6 contacts the conductive ring 12, in the daily power generation operation, the grounding nail 19 is located inside the protective shell 14 and does not directly contact the soil of the earth, the protective shell 14 and the film 15 wrap the grounding nail 19, which can avoid the corrosion of the soil environment to the grounding nail 19.

[0055] Second, when the fan blade 2 is struck by lightning, the fan blade 2 will guide the current to the carbon brush 6, and then to the conductive ring 12, and then to the explosion-proof metal sleeve 16 through the wire between the conductive ring 12 and the explosion-proof metal sleeve 16, the high temperature generated by the lightning will ignite the explosive 18, the pressure generated by the explosion of the explosive 18 will push the grounding nail 19 to pierce the film 15 and insert into the earth, so that the current of the lightning can be guided to the earth, which can avoid damage to the fan blade 2 caused by lightning.

[0056] Finally, it should be noted that: obviously, the above examples are only examples for clearly illustrating the utility model, and are not limited to the implementation. For ordinary skilled persons in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the implementation modes. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A lightning protection grounding mechanism for a wind power generator, comprising a generator main body (1) on which a fan blade (2) is installed, characterized in that, The fan blade (2) is fixedly installed with a Y-shaped seat (3), the Y-shaped seat (3) is uniformly installed with a sliding seat (4), the sliding seat (4) is slidably installed with a sliding bracket (5), the sliding bracket (5) is installed with a carbon brush (6), the sliding bracket (5) is symmetrically installed with a spring (7), the sliding bracket (5) is fixedly installed with a counterweight (8), the generator body (1) is fixedly installed with a circular seat (9), the circular seat (9) is slidably installed with a sliding ring (11), and the sliding ring (11) is fixedly installed with a conductive ring (12). Wherein, the carbon brush (6) is connected with the metal layer in the fan blade (2) through a wire.

2. The lightning protection grounding mechanism for a wind power plant according to claim 1, characterized in that, The circular seat (9) is symmetrically rotatably installed with a threaded rod (13), and the threaded rod (13) is threadedly connected with the sliding ring (11).

3. The lightning protection grounding mechanism for a wind power plant according to claim 1, characterized in that, The bottom end of the generator body (1) is uniformly fixedly installed with a protective shell (14).

4. The lightning protection grounding mechanism for a wind power plant according to claim 3, characterized in that, The bottom end of the protective shell (14) is fixedly installed with a film (15).

5. The lightning protection grounding mechanism for a wind power plant according to claim 3, characterized in that, The inside of the protective shell (14) is fixedly installed with an explosion-proof metal sleeve (16). Wherein, the explosion-proof metal sleeve (16) is connected with the conductive ring (12) through a wire.

6. The lightning protection grounding mechanism for a wind power plant according to claim 5, characterized in that, The inside of the explosion-proof metal sleeve (16) is fixedly installed with a seamless steel pipe (17).

7. The lightning protection grounding mechanism for a wind power plant according to claim 6, characterized in that, The inside of the seamless steel pipe (17) is fixedly installed with an explosive (18).

8. The lightning protection grounding mechanism for a wind power plant according to claim 5, characterized in that, The inside of the explosion-proof metal sleeve (16) is installed with a grounding spike (19). Wherein, the grounding spike (19) is connected with the inner wall of the explosion-proof metal sleeve (16) through a wire.

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