A wind farm 35kV collector line down conductor cable joint insulation protection device

Abstract

The present application discloses an insulation protection device for a cable joint of a 35kV collector line down conductor in a wind farm, which relates to the technical field of protection devices and further comprises: a collector line down conductor body, an equipment wire clamp and a cable joint on a high-voltage side tower of a transformer substation. A fixing ring is fixedly connected to the outer side of the collector line down conductor body. A protection mechanism for protecting the connection between the equipment wire clamp and the cable joint on the high-voltage side tower of the transformer substation is provided on the outer side of the collector line down conductor body. The protection mechanism comprises two protection covers. A nut is movably sleeved on the outer side of the collector line down conductor body, and the nut is threadedly connected to the outer side of the protection cover. The top of the protection cover is in contact with the bottom of the fixing ring. By providing the protection mechanism, it is unnecessary for the staff to sleeve and move the protection cover from the end of the collector line down conductor body to the equipment wire clamp, thereby shortening the replacement time of the protection cover and preventing the collector line down conductor body from being too long and reducing the maintenance efficiency of the staff.

Description

Technical Field

[0001] The present application relates to the technical field of protective devices, and more specifically, to an insulation protective device for a down conductor cable joint of a 35kV collector line of a wind farm. Background Art

[0002] The 35kV collector lines of wind farms are usually distributed in rural fields. On the one hand, bird excrement will damage the insulation performance of the equipment, and foreign objects such as iron wires and long branches used for nesting and the birds themselves can easily cause line short circuits. On the other hand, plastic films and other debris in farmers' plastic greenhouses can easily overlap with exposed metal parts under strong winds, causing line short circuits. Therefore, measures need to be taken to improve the insulation of the exposed metal parts to improve the reliability of line operation.

[0003] The document with prior art publication number CN219322062U provides a wind farm 35kV collector line down conductor cable joint insulation protection device, which avoids erosion from the external environment by insulating the connection between the collector line down conductor body and the cable on the high-voltage side of the box transformer. At the same time, it is easy to install, and during daily line inspection and maintenance, maintenance personnel do not need to remove the protective cover and can directly remove the cable, which is easy to operate.

[0004] Although the device has many beneficial effects, the following problems still exist: when replacing a damaged protective cover, the staff needs to pass the new protective cover through the end of the collector line down conductor body, and then move it to the position of the equipment wire clamp for installation and fixation. When the length of the collector line down conductor body is long, the disassembly and replacement of the protective cover is time-consuming, which can easily reduce the maintenance efficiency of the staff. In view of this, we propose an insulation protection device for the cable joint of a 35kV collector line down conductor in a wind farm. Utility Model Content

[0005] The embodiment of the present application provides an insulation protection device for the cable joint of a 35kV collector line down conductor in a wind farm, which solves the problem in the prior art that when replacing a damaged protective cover, the staff needs to pass the new protective cover through the end of the collector line down conductor body, and then move it to the position of the equipment wire clamp for installation and fixation. When the length of the collector line down conductor body is long, the disassembly and replacement of the protective cover is time-consuming, which easily reduces the maintenance efficiency of the staff. The present application achieves the technical effect of eliminating the need for the staff to put the protective cover from the end of the collector line down conductor body and move it to the equipment wire clamp, thereby shortening the replacement time of the protective cover and preventing the collector line down conductor body from being too long and reducing the maintenance efficiency of the staff.

[0006] The embodiment of the present application provides a wind farm 35kV collector line down conductor cable joint insulation protection device, including: a collector line down conductor body, an equipment wire clamp and a box transformer high voltage side upper tower cable joint;

[0007] A fixing ring is fixedly connected to the outer side of the collector line down conductor body, and a protection mechanism is provided on the outer side of the collector line down conductor body for protecting the equipment wire clamp and the connection point of the cable joint on the tower on the high-voltage side of the box transformer;

[0008] The protection mechanism includes two protection covers. A nut is provided on the outer movable sleeve of the collector line down conductor body, and the nut is threadedly connected to the outer side of the protection cover. The top of the protection cover abuts against the bottom of the fixing ring, which is convenient for the staff to quickly replace the damaged protection cover.

[0009] By adopting the above technical solution and setting up a protective mechanism, when the protective cover is damaged and needs to be replaced, the staff can quickly remove and install the two protective covers from the equipment wire clamps, and the staff no longer need to put the protective cover from the end of the collector line down lead body and move it to the equipment wire clamp, thereby shortening the replacement time of the protective cover and preventing the collector line down lead body from being too long and reducing the maintenance efficiency of the staff.

[0010] Optionally, the nut includes a first cap body and a second cap body, the first cap body has two slots symmetrically opened on one side, the second cap body has two insertion strips symmetrically fixedly connected on one side, and the insertion strips are slidably connected in the slots, thereby facilitating the staff to place the nut cover on the outside of the collector line down conductor body.

[0011] By adopting the above technical solution and setting the first cap body and the second cap body, the first cap body and the second cap body can be combined into a nut and disassembled, thereby facilitating the nut to be quickly fixed on the outside of the collector line down conductor body close to the equipment clamp.

[0012] Optionally, the slot and the insert are both isosceles trapezoidal in shape, and the dimension of the insert away from the second cap body is larger than the dimension of the insert close to the second cap body, thereby facilitating rapid separation of the first cap body from the second cap body.

[0013] By adopting the above technical solution and limiting the shapes of the slot and the insert, the first cap body and the second cap body can only move displacedly along the length direction of the collector line down conductor body when separated, but cannot move horizontally away from each other.

[0014] Optionally, the inner walls of the two protective covers are fixedly connected with a first sealing pad, and the two sides of the bottom of the first sealing pad are fixedly connected with a second sealing pad, one of the first sealing pad and the second sealing pad is provided with a groove on one side, and the other of the first sealing pad and the second sealing pad is fixedly connected with a third sealing pad on one side, and the third sealing pad is located in the groove, so as to facilitate sealing the gap between the two protective covers.

[0015] By adopting the above technical solution, by providing the first sealing pad, the second sealing pad and the third sealing pad, it is possible to seal the gap between the two protective covers to prevent external foreign matter from entering the inner side of the protective covers through the gap between the two protective covers.

[0016] Optionally, the cross-section of the groove is in a W-shape, and the third sealing pad is in a W-shape with an opening closed.

[0017] By adopting the above technical solution and setting the shape of the third sealing pad and the groove, the third sealing pad can be located in the groove, so that when the first sealing pad and the second sealing pad are subsequently squeezed, the third sealing pad can also be squeezed and expanded, further improving the sealing effect of the gap between the two protective covers.

[0018] Optionally, mounting plates are fixedly connected to both sides of the bottom of the protective cover, a through slot is formed through one side of the mounting plate, a screw is provided in the through slot, and nuts are threadedly connected to both ends of the screw, thereby facilitating tight clamping of the two first sealing pads.

[0019] By adopting the above technical solution and setting the mounting plate, screw rod and nut, the two protective covers can squeeze the first sealing pad and the second sealing pad, so that the first sealing pad and the second sealing pad expand and deform to fully seal the gap between the two protective covers.

[0020] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0021] 1. By setting up a protective mechanism, when the protective cover is damaged and needs to be replaced, the staff can quickly remove and install the two protective covers from the equipment wire clamps, and the staff no longer need to put the protective cover from the end of the collector line down conductor body and move it to the equipment wire clamp, thereby shortening the replacement time of the protective cover and preventing the collector line down conductor body from being too long and reducing the maintenance efficiency of the staff.

[0022] 2. By providing the first cap body and the second cap body, the first cap body and the second cap body can be combined into a nut and separated, so that the nut can be quickly fixed on the outside of the collector line down conductor body close to the equipment clamp.

[0023] 3. By providing the mounting plate, screw rods and nuts, the two protective covers can squeeze the first sealing pad and the second sealing pad, so that the first sealing pad and the second sealing pad expand and deform to fully seal the gap between the two protective covers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a wind farm 35kV collector line down conductor cable joint insulation protection device according to an embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the connection structure between a collector line down conductor body and a fixing ring of a wind farm 35kV collector line down conductor cable joint insulation protection device according to an embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of the split structure of two protective covers of a wind farm 35kV collector line down conductor cable joint insulation protection device according to an embodiment of the present application;

[0027] Figure 4 A schematic top view of a first sealing gasket of a down conductor cable joint insulation protection device for a 35kV collector line in a wind farm according to an embodiment of the present application;

[0028] Figure 5 This is a schematic diagram of the split structure of the first cap body and the second cap body of a wind farm 35kV collector line down conductor cable joint insulation protection device according to an embodiment of the present application;

[0029] Figure 6 This is a schematic diagram of the structure of the A-region of a down-conductor cable joint insulation protection device for a 35kV collector line in a wind farm according to an embodiment of the present application;

[0030] Explanation of the numbers in the figure: 1. Collector line lead body; 2. Equipment wire clamp; 3. Protective mechanism; 30. Protective cover; 31. First sealing gasket; 32. Second sealing gasket; 33. Nut; 3301. First cap body; 3302. Second cap body; 34. Insert; 35. Slot; 36. Slot; 37. Third sealing gasket; 4. Cable connector on the high-voltage side of the box-type transformer tower; 5. Fixing ring; 6. Mounting plate; 7. Screw; 8. Nut. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with the accompanying drawings.

[0032] Reference Figure 1 and Figure 2The embodiment of the present application discloses a wind farm 35kV collector line down conductor cable joint insulation protection device. The wind farm 35kV collector line down conductor cable joint insulation protection device comprises: a collector line down conductor body 1, an equipment wire clamp 2 and a box transformer high voltage side upper tower cable joint 4;

[0033] A fixing ring 5 is fixedly connected to the outer side of the collector line down conductor body 1, and a protection mechanism 3 is provided on the outer side of the collector line down conductor body 1 for protecting the connection between the equipment wire clamp 2 and the cable connector 4 on the tower on the high-voltage side of the box transformer;

[0034] The protection mechanism 3 includes two protection covers 30. A nut 33 is provided on the outer side of the collector line down conductor body 1, and the nut 33 is threadedly connected to the outer side of the protection cover 30. The top of the protection cover 30 abuts against the bottom of the fixing ring 5, which is convenient for the staff to quickly replace the damaged protection cover 30.

[0035] Reference Figure 1 and Figure 2 The top and bottom of the nut 33 are both open, the size of the top opening of the nut 33 is larger than the size of the inner ring of the fixing ring 5, and the size of the top opening of the nut 33 is smaller than the size of the outer ring of the fixing ring 5, and the size of the bottom opening of the nut 33 is larger than the size of the outer ring of the fixing ring 5, which is convenient for preventing the protective cover 30 from detaching from the outside of the collector line lead body 1.

[0036] Reference Figure 5 The nut 33 includes a first cap body 3301 and a second cap body 3302. One side of the first cap body 3301 is symmetrically provided with two slots 35. One side of the second cap body 3302 is symmetrically fixedly connected with two inserting strips 34, and the inserting strips 34 are slidably connected in the slots 35, so that it is convenient for the staff to cover the nut 33 on the outside of the collector line down conductor body 1.

[0037] Reference Figure 5 The slot 35 and the inserting strip 34 are both isosceles trapezoidal in shape, and the size of the inserting strip 34 away from the second cap body 3302 is larger than the size of the inserting strip 34 close to the second cap body 3302, thereby facilitating the rapid separation of the first cap body 3301 from the second cap body 3302 and effectively preventing the first cap body 3301 and the second cap body 3302 from moving away from each other in the horizontal direction.

[0038] Reference Figure 3 and Figure 4 The inner walls of the two protective covers 30 are fixedly connected with first sealing pads 31 , and both sides of the bottom of the first sealing pads 31 are fixedly connected with second sealing pads 32 , so as to facilitate sealing the gap between the two protective covers 30 .

[0039] Reference Figure 3The first sealing plate 31 is shaped with a raised middle and raised sides, and the combined shape of the two adjacent second sealing plates 32 is an eight-shaped shape, so that the two first sealing plates 31 and the second sealing plates 32 can be clamped between the two protective covers 30, and the two first sealing plates 31 can be sleeved on the outside of the collector line down conductor body 1.

[0040] Reference Figure 1 and Figure 6 Both sides of the bottom of the protective cover 30 are fixedly connected with mounting plates 6, one side of the mounting plate 6 is penetrated with a through groove, a screw rod 7 is arranged in the through groove, and nuts 8 are threadedly connected at both ends of the screw rod 7, so as to facilitate the tight clamping of the two first sealing pads 31 and ensure the sealing effect of the gap between the two protective covers 30.

[0041] Reference Figure 3 and Figure 4 One side of one of the first sealing pads 31 and the second sealing pad 32 is provided with a groove 36, and one side of the other first sealing pad 31 and the second sealing pad 32 is fixedly connected with a third sealing pad 37, and the third sealing pad 37 is located in the groove 36, so as to ensure the sealing effect of the gap between the two protective covers 30.

[0042] Reference Figure 3 and Figure 4 The cross-section of the groove 36 is W-shaped, and the third sealing pad 37 is in an open and closed W-shape, so that the third sealing pad 37, the first sealing pad 31 and the second sealing pad 32 can fully expand and deform when squeezed, thereby further improving the sealing effect of the gap between the two protective covers 30.

[0043] Reference Figure 3 The first sealing pad 31, the second sealing pad 32 and the third sealing pad 37 are all made of rubber, thereby ensuring insulation and sealing performance.

[0044] The implementation principle of the insulation protection device of the cable joint of the 35kV collector line lead wire of a wind farm in the embodiment of the present application is as follows: when the staff needs to replace the protective cover 30, the nut 33 can be screwed to separate the nut 33 from the protective cover 30, and the nut 33 can be separated from the fixing ring 5, and then the nut 8 can be screwed off, and the screw rod 7 can be pulled out, so that the protective cover 30 can be removed from the outside of the collector line lead wire body 1, and then the two first cap bodies 3301 are moved downward, and the second cap body 3302 is moved upward, so that the insert 34 is disengaged from the slot 35, and the first cap body 3301 is separated from the second cap body 3302, so that the nut 33 is removed from the collector line lead wire body 1. Remove the outer side, and when the protective cover 30 needs to be installed, place the first cap body 3301 on one side of the collector line down conductor body 1, and place the second cap body 3302 on the other side of the collector line down conductor body 1 and below the first cap body 3301, and then move the second cap body 3302 upward in the direction close to the first cap body 3301 until the insertion strip 34 is inserted into the slot 35, so that the first cap body 3301 and the second cap body 3302 are combined into a nut 33 which is sleeved on the outer side of the collector line down conductor body 1, and then place the two new protective covers 30 at the bottom of the fixing ring 5, and then rotate the nut 33 so that the nut 33 is threadedly connected to the outer sides of the two protective covers 30. Until the top of the inner wall of the nut 33 abuts against the top of the fixing ring 5, the disassembly and assembly of the two protective covers 30 and the nut 33 is completed. There is no need for the staff to pass the protective cover 30 through the end position of the collector line down conductor body 1 and move it to the equipment wire clamp 2 to prevent the collector line down conductor body 1 from being too long and making it inconvenient to quickly disassemble and assemble the protective cover 30.

[0045] An embodiment of the present application provides an insulation protection device for a cable joint of a 35kV collector line down conductor in a wind farm. By setting a protection mechanism 3, when the protection cover 30 is damaged and needs to be replaced, the staff can quickly remove and install the two protection covers 30 from the equipment wire clamp 2, and the staff no longer needs to put the protection cover 30 from the end of the collector line down conductor body 1 and move it to the equipment wire clamp 2, thereby shortening the replacement time of the protection cover 30 and preventing the collector line down conductor body 1 from being too long and reducing the maintenance efficiency of the staff.

Claims

1. A wind farm 35kV collector line down conductor cable joint insulation protection device, comprising a collector line down conductor body (1), an equipment wire clamp (2) and a box transformer high voltage side upper tower cable joint (4), characterized in that: Include: A fixing ring (5) is fixedly connected to the outer side of the collector line down conductor body (1), and a protection mechanism (3) for protecting the connection between the equipment wire clamp (2) and the cable connector (4) on the tower on the high-voltage side of the box transformer is provided on the outer side of the collector line down conductor body (1); The protection mechanism (3) comprises two protection covers (30), a nut (33) is provided on the outer side of the collector line down conductor body (1), and the nut (33) is threadedly connected to the outer side of the protection cover (30), and the top of the protection cover (30) is in contact with the bottom of the fixing ring (5), so that the staff can quickly replace the damaged protection cover (30).

2. The insulation protection device for the down conductor cable joint of the 35kV collector line of a wind farm according to claim 1, characterized in that: The nut (33) comprises a first cap body (3301) and a second cap body (3302), wherein one side of the first cap body (3301) is symmetrically provided with two slots (35), and one side of the second cap body (3302) is symmetrically fixedly connected with two insertion strips (34), and the insertion strips (34) are slidably connected in the slots (35), so that it is convenient for a worker to cover the nut (33) on the outside of the collector line down conductor body (1).

3. The insulation protection device for the down conductor cable joint of the 35kV collector line of a wind farm according to claim 2, characterized in that: The slot (35) and the inserting strip (34) are both in the shape of an isosceles trapezoid, and the size of the inserting strip (34) on the side away from the second cap body (3302) is larger than the size of the side close to the second cap body (3302), thereby facilitating rapid separation of the first cap body (3301) from the second cap body (3302).

4. The insulation protection device for the down conductor cable joint of the 35kV collector line of a wind farm as claimed in claim 3, characterized in that: The inner walls of the two protective covers (30) are fixedly connected with a first sealing pad (31), and the bottom sides of the first sealing pad (31) are fixedly connected with a second sealing pad (32), one side of the first sealing pad (31) and the second sealing pad (32) is provided with a groove (36), and the other side of the first sealing pad (31) and the second sealing pad (32) is fixedly connected with a third sealing pad (37), and the third sealing pad (37) is located in the groove (36), so as to facilitate sealing the gap between the two protective covers (30).

5. The insulation protection device for the down conductor cable joint of the 35kV collector line of a wind farm as claimed in claim 4, characterized in that: The cross section of the slot (36) is in a W shape, and the third sealing pad (37) is in a W shape with an opening closed.

6. The insulation protection device for the down conductor cable joint of the 35kV collector line of a wind farm according to claim 5, characterized in that: Both sides of the bottom of the protective cover (30) are fixedly connected to mounting plates (6), one side of the mounting plate (6) is provided with a through slot, a screw rod (7) is arranged in the through slot, and both ends of the screw rod (7) are threadedly connected to nuts (8), so as to facilitate the tight clamping of the two first sealing pads (31).

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