Lightning-proof broken line protection device for current collection circuit of wind power plant

Abstract

The invention relates to the technical field of line lightning-proof broken line protection devices, in particular to a wind power plant current collection line lightning-proof broken line protection device which comprises a device body, a heightening base is fixed to the bottom end of the device body, the number of hoops is two, the same hoop limiting mechanism is movably installed between the two hoops, the hoops are of a U-shaped rod body structure, and the height of the heightening base is larger than that of the hoop limiting mechanism. A clamping block mounting groove is formed in the hoop, and one end of a clamping block is movably inserted into the clamping block mounting groove; the device has the beneficial effects that when the device body is installed on an iron tower steel beam, the hoops can be clamped to the iron tower steel beam through the clamping mechanisms, the hoops do not need to be supported subsequently, the distance between the two sets of hoops is limited through the hoop limiting mechanisms, and the device is convenient to use. And the distance between each group of side rods on the two groups of hoops corresponds to the distance between each group of through holes in the base, so that each group of hoops can conveniently penetrate through each group of through holes at the same time, the installation of the device body is more convenient and faster, one person can complete the installation, and manpower is greatly saved.

Description

Technical Field

[0001] This invention relates to the technical field of lightning strike protection devices for power lines, specifically a lightning strike protection device for wind farm power collection lines. Background Technology

[0002] Wind farm collector lines are the "blood vessels" of a wind farm, responsible for collecting and transmitting electrical energy. They collect the electricity generated by the distributed wind turbines and transmit it to the wind farm's substation, preparing it for connection to the main power grid. Wind farms are often built in remote, open areas with frequent lightning activity, making their collector lines highly vulnerable to lightning strikes. Therefore, lightning protection devices must be installed on the towers of these collector lines.

[0003] In existing technology, active lightning rods, also known as lightning arresters, are a type of protection device commonly used in wind farm power collection lines against lightning strikes. This device consists of a main body, an extension bracket, and a base. The base is installed on the steel beam of the power collection tower using clamps and bolts. The bottom of the extension bracket is fixed to the base with screws and bolts, and the main body is fixed to the top of the extension bracket with screws and bolts. The top of the main body is fixed with numerous sharp metal spikes. When a thunderstorm approaches, the thunderclouds in the sky induce a strong electrostatic field. When the electric field strength reaches a certain threshold, the numerous sharp metal spikes at the top of the lightning arrester actively and continuously emit a large number of free charges into the air through a "point discharge" effect. These released ions form a channel with higher conductivity in the air. This channel essentially "paves a path" for lightning in advance, allowing it to develop upwards faster and earlier than any naturally formed leader to "meet" the downward-moving lightning leader. Because the path resistance of the lightning rod is minimal, the lightning is precisely guided to the lightning rod itself, and then safely conducted into the grounding grid through the downstream conductor connected to it, thereby dissipating the enormous lightning energy and achieving the effect of lightning repellency.

[0004] However, in the existing technology, when installing the surge arrester on the steel beam of the collector tower, at least two people are required to work together. One person holds the base firmly and places it on the steel beam of the tower, while the other person puts the clamp on the steel beam of the tower and then passes the top of the clamp through the through hole on the base. Finally, the nut is tightened on the clamp to install the surge arrester. This installation method is not complicated, but it cannot be completed by one person, which is too wasteful of manpower. Summary of the Invention

[0005] The purpose of this invention is to provide a lightning strike protection device for wind farm power collection lines to solve the problems mentioned in the background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A lightning protection device for preventing lightning breakage of a wind farm collector line, comprising: a device body, a heightening base is fixed at the bottom end of the device body, a base is fixed at the bottom end of the heightening base, a through hole is provided on the base, a hoop is movably inserted in the through hole, there are two groups of hoops, and the same group of hoop limiting mechanisms are movably installed between the two groups of hoops. The hoop is in a "U"-shaped rod structure, a block installation groove is provided on the hoop, and one end of a block is movably inserted in the block installation groove.

[0007] Preferably, the block is in a wedge-shaped block structure, the other end of the block extends out of the block installation groove, and a slope is provided at the top of the part where the block extends out of the block installation groove. A fast-rebound memory cotton is movably connected in the block installation groove. The fast-rebound memory cotton is in a rectangular block structure. One end of the fast-rebound memory cotton abuts against the block, and the other end of the fast-rebound memory cotton abuts against the inner wall of the block installation groove.

[0008] Preferably, the block installation groove is in a rectangular groove structure, guide rails are provided on the upper and lower inner walls of the block installation groove. The guide rails are in a rectangular groove structure. Sliders are fixed at the upper and lower ends of the part where the block extends into the block installation groove. The sliders are in a rectangular block structure. The two sliders are respectively slidably connected in the two guide rails.

[0009] Preferably, external threads are provided on both side rods of the hoop, and nuts are movably installed on both side rods of the hoop by threaded connection.

[0010] Preferably, the hoop limiting mechanism includes: a lower hook sleeve, an upper hook sleeve and a cross bar. The cross bar is in a round rod structure, upper hook sleeves are fixed at both ends of the cross bar, and the upper hook sleeve is movably connected to the top of the upper hook sleeve.

[0011] Preferably, half of the hoop groove is provided on both the lower hook sleeve and the upper hook sleeve, and the hoop is movably inserted in the hoop groove.

[0012] Preferably, an extension groove is provided at the top of the lower hook sleeve. The extension groove is in a "convex"-shaped circular groove structure. An extension rod is fixed at the bottom end of the upper hook sleeve. The extension rod is in a round rod structure. The extension rod is rotationally inserted in the extension groove.

[0013] Preferably, a spring plate is fixed at the bottom end of the extension rod. The spring plate is in a circular plate structure. The spring plate is slidably connected up and down in the extension groove.

[0014] Preferably, a spring is sleeved on the rod body of the extension rod. The top of the spring abuts against the inner wall of the groove body of the extension groove, and the bottom of the spring abuts against the top of the spring plate.

[0015] Preferably, a让位槽 is provided at the bottom end of the base, and one end of the block extending out of the block installation groove is movably inserted in the让位槽.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The wind farm collector line lightning strike protection device proposed in this invention allows the clamps to be secured to the steel beam of the tower via a clamping mechanism when the device body is installed on the steel beam. No further support is needed for the clamps. A clamp limiting mechanism limits the distance between the two sets of clamps, ensuring that the distance between the side bars on each set of clamps corresponds to the distance between the through holes on the base. This facilitates the simultaneous passage of each set of clamps through each set of through holes, making the installation of the device body more convenient and allowing for completion by a single person, greatly saving manpower. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the bottom structure of the steel beam of the iron tower;

[0020] Figure 3 A schematic diagram of the installation structure of the base and the steel beam of the tower;

[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0022] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point B;

[0023] Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point C;

[0024] Figure 7 for Figure 3 Schematic diagram of the cross-sectional structure at point DD;

[0025] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point E in the middle.

[0026] In the diagram: 1. Device body; 2. Elevator seat; 3. Base; 4. Steel beam of the iron tower; 5. Through hole; 6. Clamp; 7. Clamp limiting mechanism; 7. Lower hook sleeve; 71. Upper hook sleeve; 72. Crossbar; 73. Extension groove; 74. Extension rod; 75. Spring plate; 76. Spring; 77. Clamp groove; 78. Nut; 8. Holding mechanism; 9. Block mounting groove; 91. Block; 92. Quick-rebound memory foam; 93. Guide rail; 94. Slider; 95. Clearance groove; 10. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: Please refer to Figures 1 to 8 This invention provides a technical solution: a lightning strike protection device for wind farm power collection lines, comprising: a device body 1, an elevation base 2 fixed to the bottom of the device body 1, a base 3 fixed to the bottom of the elevation base 2, a through hole 5 on the base 3, a clamp 6 movably inserted into the through hole 5, two sets of clamps 6, a clamp limiting mechanism 7 movably installed between the two sets of clamps 6, the clamp 6 having a "U"-shaped rod structure, a locking block mounting groove 91 on the clamp 6, one end of a locking block 92 movably inserted into the locking block mounting groove 91; Block 92 has a wedge-shaped block structure. The other end of the block 92 extends out of the block mounting groove 91, and the top of the part of the block 92 extending out of the block mounting groove 91 has an inclined surface. A fast rebound memory foam 93 is movably connected in the block mounting groove 91. The fast rebound memory foam 93 has a rectangular block structure. One end of the fast rebound memory foam 93 abuts against the block 92, and the other end of the fast rebound memory foam 93 abuts against the inner wall of the block mounting groove 91. Both side rods of the clamp 6 have external threads, and both side rods of the clamp 6 are movably installed with nuts 8 through threaded connections.

[0029] When installing the device body 1 onto the steel beam 4 of the iron tower, the operator needs to climb the iron tower with the device body 1, which has the riser 2 and base 3 installed. During the climb, various parts and the device body 1 are usually placed in a backpack, which is tied to the operator's body with a rope. After the operator climbs to the installation position, the rope of the backpack is tied to the steel beam 4 of the iron tower to prevent the backpack and the parts in the backpack from falling.

[0030] When installing the device body 1 onto the steel beam 4 of the tower, first install the base 3 onto one set of clamps 6, then install the other set of clamps 6 onto the other end of the base 3. The base 3 then limits the distance between the two sets of clamps 6. Next, place the clamps 6 at the bottom end of the steel beam 4, with the opening of the clamps 6 facing upwards, and fit the clamps 6 onto the steel beam 4. During fitting, the inclined surface of the locking block 92 contacts the steel beam 4 and is completely pushed into the locking block mounting groove 91. The movement of the locking block 92 compresses the fast-rebound memory foam 93. When the top of the crossbar of the clamp 6 abuts against the bottom end of the steel beam 4, the locking block mounting groove 91 opened on the side bar of the clamp 6... The height of the bottom inner wall is flush with the top height of the steel beam 4 of the iron tower. Then, the quick-rebound memory foam 93 pushes one end of the locking block 92 out of the locking block mounting groove 91 under its own elasticity, so that the locking block 92 is locked on the top of the steel beam 4 of the iron tower, thereby making the clamp 6 locked on the steel beam 4 of the iron tower. Then the clamp 6 can be released, and the device body 1 can be taken out of the backpack. Align the through holes 5 on the base 3 with the side rods of the clamp 6, and then place the base 3 on the steel beam 4 of the iron tower. The side rods of the clamp 6 will pass through the through holes 5. Then, hold the riser 2 with one hand and tighten the nuts 8 one by one on the side rods of the clamp 6 with the other hand to complete the installation of the device body 1.

[0031] After installation, the clamp limiting mechanism 7 can be removed from the clamp 6 and used when installing the next set of device bodies 1.

[0032] When the device body 1 is installed onto the steel beam 4 of the tower, the clamp 6 can be clamped onto the steel beam 4 by the clamping mechanism 9, which consists of a clamping block mounting groove 91, a clamping block 92, a fast-rebound memory foam 93, a guide rail 94, and a slider 95. No further support is needed for the clamp 6. The clamp limiting mechanism 7 limits the distance between the two sets of clamps 6, so that the distance between each set of side rods on the two sets of clamps 6 corresponds to the distance between each set of through holes 5 on the base 3. This makes it convenient for each set of clamps 6 to pass through each set of through holes 5 at the same time, making the installation of the device body 1 more convenient and can be completed by one person, which greatly saves manpower.

[0033] Example 2: Based on Example 1, in order to prevent the card block 92 from falling out of the card block mounting slot 91, the card block mounting slot 91 is a rectangular slot structure. Guide rails 94 are provided on the inner walls of both the upper and lower ends of the card block mounting slot 91. The guide rails 94 are rectangular slot structures. Slider blocks 95 are fixed at both the upper and lower ends of the part of the card block 92 that extends into the card block mounting slot 91. The sliders 95 are rectangular block structures. The two sets of sliders 95 are slidably connected in the two sets of guide rails 94 respectively.

[0034] When the clamping block 92 moves towards the outside of the clamping block installation groove 91, the slider 95 slides in the guide rail 94. When the slider 95 abuts against the inner wall of the guide rail 94, the slider 95 cannot continue to move, making the clamping block 92 unable to continue moving towards the outside of the clamping block installation groove 91, thus preventing the clamping block 92 from falling out of the clamping block installation groove 91.

[0035] Embodiment 3: On the basis of Embodiment 2, in order to achieve the disassembly and assembly of the hoop 6 and the hoop limiting mechanism 7 and limit the distance between two hoops 6 through the hoop limiting mechanism 7, the hoop limiting mechanism 7 includes: a lower hook sleeve 71, an upper hook sleeve 72 and a cross bar 73. The cross bar 73 is in a round bar structure, and upper hook sleeves 72 are fixed at both ends of the cross bar 73. The top end of the upper hook sleeve 72 is movably connected to the upper hook sleeve 72; Half of the hoop groove 78 is provided on both the lower hook sleeve 71 and the upper hook sleeve 72, and the hoop 6 is movably inserted into the hoop groove 78; An extension groove 74 is provided at the top end of the lower hook sleeve 71. The extension groove 74 is in a "convex" - shaped circular groove structure. An extension rod 75 is fixed at the bottom end of the upper hook sleeve 72. The extension rod 75 is in a round bar structure, and the extension rod 75 is rotationally inserted into the extension groove 74; A spring plate 76 is fixed at the bottom end of the extension rod 75. The spring plate 76 is in a circular plate structure, and the spring plate 76 slides up and down in the extension groove 74; A spring 77 is sleeved on the rod body of the extension rod 75. The top end of the spring 77 abuts against the inner wall of the groove body of the extension groove 74, and the bottom end of the spring 77 abuts against the top end of the spring plate 76.

[0036] When the hoop limiting mechanism 7 is installed on two hoops 6, the two hoops 6 are respectively inserted into the two hoop grooves 78, and the two hoop grooves 78 are respectively arranged at both ends of the cross bar 73, thus achieving the limitation of the distance between two hoops 6 through the hoop limiting mechanism 7.

[0037] When installing the hoop limiting mechanism 7 on the hoop 6, pull the upper hook sleeve 72 upwards, then the extension rod 75 is pulled out of the extension groove 74, and the spring plate 76 moves along with the extension rod 75, making the spring 77 compressed. Then rotate the upper hook sleeve 72 by 180 degrees and then lower the upper hook sleeve 72. After that, place the middle part of the cross bar of the hoop 6 in the hoop groove 78 on the lower hook sleeve 71, making the hoop 6 open downwards. Hold the cross bar 73 with the palm of one hand and hold the hoop 6 with the fingers of the same hand. Then pull the upper hook sleeve 72 upwards again with the other hand, rotate the upper hook sleeve 72 by 180 degrees again, and then lower the upper hook sleeve 72. Then the upper hook sleeve 72 is sleeved above the cross bar of the hoop 6, making the hoop 6 limited in the completely assembled hoop groove 78, completing the installation of the hoop 6 and the hoop limiting mechanism 7; When removing the hoop limiting mechanism 7 from the hoop 6, similarly pull the upper hook sleeve 72 upwards and rotate it by 180 degrees, then the hoop 6 can be withdrawn from the hoop groove 78, and the hoop limiting mechanism 7 can be removed from the hoop 6.

[0038] Example 4: Based on Example 3, in order to prevent the inclined surface of the card block 92 from contacting the base 3 and causing the card block 92 to be completely pushed into the card block mounting groove 91, resulting in a failure of the card holding, a clearance groove 10 is provided at the bottom of the base 3, and one end of the card block 92 extending out of the card block mounting groove 91 is movably inserted into the clearance groove 10.

[0039] When the base 3 is placed on the top of the steel beam 4 of the iron tower and the clamp 6 is inserted into the through hole 5, the locking block 92 is inserted into the clearance groove 10 opened at the bottom of the base 3, so that the inclined surface of the locking block 92 avoids contact with the base 3, thereby preventing the locking block 92 from being completely pushed into the locking block mounting groove 91 due to contact between the inclined surface of the locking block 92 and the base 3, causing the locking failure.

[0040] In actual use, when installing the device body 1 onto the steel beam 4 of the iron tower, the operator needs to climb the iron tower with the device body 1, which has the heightening seat 2 and base 3 installed. When climbing, various parts and the device body 1 are usually placed in a backpack, which is tied to the operator's body with a rope. After the operator climbs to the installation position, the rope of the backpack is tied to the steel beam 4 of the iron tower to prevent the backpack and the parts in the backpack from falling. When installing the device body 1 onto the steel beam 4 of the tower, first install the base 3 onto one set of clamps 6, then install the other set of clamps 6 onto the other end of the base 3. The base 3 then limits the distance between the two sets of clamps 6. Next, place the clamps 6 at the bottom end of the steel beam 4, with the opening of the clamps 6 facing upwards, and fit the clamps 6 onto the steel beam 4. During fitting, the inclined surface of the locking block 92 contacts the steel beam 4 and is completely pushed into the locking block mounting groove 91. The movement of the locking block 92 compresses the fast-rebound memory foam 93. When the top of the crossbar of the clamp 6 abuts against the bottom end of the steel beam 4, the locking block mounting groove 91 opened on the side bar of the clamp 6... The height of the bottom inner wall is flush with the top height of the steel beam 4 of the iron tower. The quick-rebound memory foam 93, under its own elasticity, pushes one end of the locking block 92 out of the locking block mounting groove 91, causing the locking block 92 to lock onto the top of the steel beam 4. This causes the clamp 6 to be locked onto the steel beam 4. Then, the clamp 6 can be released, and the device body 1 can be taken out of the backpack. Align the through holes 5 on the base 3 with the side rods of the clamp 6, and then place the base 3 on the steel beam 4. The side rods of the clamp 6 will then pass through the through holes 5. Holding the riser 2 with one hand, tighten the nuts 8 one by one onto the side rods of the clamp 6 with the other hand to complete the installation of the device body 1. After installation, the clamp limiting mechanism 7 can be removed from the clamp 6 for use when installing the next set of device bodies 1. The top of the device body 1 is fixed with a large number of sharp metal spikes. When a thunderstorm approaches, the thunderclouds in the sky will induce a strong electrostatic field. When the electric field strength reaches a certain threshold, the numerous sharp metal spikes at the top of the lightning arrester will actively and continuously emit a large number of free charges into the air through the "point discharge" effect. These released ions will form a channel with higher conductivity in the air. This channel is equivalent to "paving a road" for lightning in advance. It can develop upward faster and earlier than any naturally formed leader in the surrounding area to "meet" the downward-developing lightning leader. Because the path resistance of this channel created by the lightning arrester is the lowest, the lightning will be accurately guided to the device body 1, and then safely conducted into the grounding grid through the connected downstream conductors, namely the riser 2, the base 3, and the steel beam of the tower 4, thereby dissipating the huge lightning energy and achieving the effect of lightning arrest.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightning strike protection device for wind farm collector lines, comprising: The device body (1), a heightening seat (2) is fixed at the bottom end of the device body (1), a base (3) is fixed at the bottom end of the heightening seat (2), a through hole (5) is formed in the base (3), and a hoop (6) is movably inserted in the through hole (5). It is characterized in that: two groups of hoops (6) are provided, and the same group of hoop limiting mechanisms (7) are movably installed between the two groups of hoops (6). The hoop (6) is in a "U"-shaped rod structure, and a block mounting groove (91) is formed in the hoop (6), and one end of a block (92) is movably inserted in the block mounting groove (91).

2. The lightning strike protection device for wind farm collector lines according to claim 1, characterized in that: The block (92) is in a wedge-shaped block structure, the other end of the block (92) extends out of the block mounting groove (91), and a slope is formed at the top end of the part of the block (92) extending out of the block mounting groove (91). A fast-rebound memory foam (93) is movably connected in the block mounting groove (91). The fast-rebound memory foam (93) is in a rectangular block structure. One end of the fast-rebound memory foam (93) abuts against the block (92), and the other end of the fast-rebound memory foam (93) abuts against the inner wall of the block mounting groove (91).

3. The lightning strike protection device for wind farm collector lines according to claim 2, characterized in that: The block mounting groove (91) is in a rectangular groove structure, guide rails (94) are formed on the upper and lower inner walls of the block mounting groove (91). The guide rails (94) are in a rectangular groove structure. The upper and lower ends of the part of the block (92) extending into the block mounting groove (91) are both fixed with sliders (95). The sliders (95) are in a rectangular block structure, and the two groups of sliders (95) are respectively slidably connected in the two groups of guide rails (94).

4. The lightning strike protection device for wind farm collector lines according to claim 1, characterized in that: External threads are formed on both side rods of the hoop (6), and nuts (8) are movably installed on both side rods of the hoop (6) by threaded connection.

5. A lightning strike protection device for wind farm collector lines according to claim 1, characterized in that: The hoop limiting mechanism (7) includes: a lower hook sleeve (71), an upper hook sleeve (72) and a cross bar (73). The cross bar (73) is in a round rod structure, and upper hook sleeves (72) are fixed at both ends of the cross bar (73). The top end of the upper hook sleeve (72) is movably connected with an upper hook sleeve (72).

6. A lightning strike protection device for wind farm collector lines according to claim 5, characterized in that: Half of a hoop groove (78) is formed on both the lower hook sleeve (71) and the upper hook sleeve (72), and the hoop (6) is movably inserted in the hoop groove (78).

7. A lightning strike protection device for wind farm collector lines according to claim 5, characterized in that: An extension groove (74) is formed at the top end of the lower hook sleeve (71). The extension groove (74) is in a "convex"-shaped circular groove structure. An extension rod (75) is fixed at the bottom end of the upper hook sleeve (72). The extension rod (75) is in a round rod structure, and the extension rod (75) is rotatably inserted in the extension groove (74).

8. A lightning strike protection device for wind farm collector lines according to claim 7, characterized in that: A spring plate (76) is fixed at the bottom end of the extension rod (75). The spring plate (76) is in a circular plate structure. The spring plate (76) is slidably connected up and down in the extension groove (74).

9. A lightning strike protection device for wind farm collector lines according to claim 8, characterized in that: A spring (77) is sleeved on the rod body of the extension rod (75). The top end of the spring (77) abuts against the inner wall of the groove body of the extension groove (74), and the bottom end of the spring (77) abuts against the top end of the spring plate (76).

10. A lightning strike protection device for wind farm collector lines according to claim 1, characterized in that: A让位槽(10) is formed at the bottom end of the base (3), and one end of the block (92) extending out of the block mounting groove (91) is movably inserted in the让位槽(10).

Images