Multi-bus supporting bracket

Abstract

The utility model discloses a multi-bus supporting bracket, and relates to the technical field of bus supporting brackets. The device comprises an upper support and a lower support, arc-shaped grooves of the upper support and the lower support form three bus holes distributed in a delta shape, the device is also provided with insulation sleeves sleeved in the bus holes, the inner sides of the arc-shaped grooves are provided with elastic positioning convex rings, the outer walls of the insulation sleeves are provided with adaptive positioning concave rings, and the inner walls of the insulation sleeves are provided with a plurality of movable balls at equal intervals. The support effectively improves the insulation performance between the bus and the support, prevents the insulation surface of the bus from being damaged, accurately positions the insulation sleeve to prevent sliding, reduces the friction damage between the bus and the insulation sleeve, guarantees the safety and stability of power transmission, and prolongs the service life of the bus.

Description

TECHNICAL FIELD

[0001] The utility model relates to busbar support support technical field, concretely is a kind of multi-busbar support support. BACKGROUND

[0002] In wind power generation system, as the key component of transmission electric energy, the stable and reliable operation of busbar plays a vital role for electric power transmission. And busbar support support is an important component to ensure the normal installation and fixation of busbar.

[0003] At present, common wind power busbar support structure is usually composed of upper support and lower support, and the space for accommodating busbar is formed between upper support and lower support, such as the pipe type wind power busbar fixing fitting disclosed in application No. CN201610350846.7. In the existing technical solution, the insulation between busbar and support mainly relies on the insulation layer of busbar outer surface.

[0004] However, this insulation mode that simply depends on the insulation layer of busbar outer surface has significant defects. Due to the complex and changeable wind power environment, busbar will be affected by various external force factors such as wind force and mechanical vibration in actual operation process, and relative displacement and friction between busbar and support are inevitable. Long-time friction and displacement can easily cause the wear and damage of insulation layer on busbar outer surface, and then the insulation performance between busbar and support is sharply reduced, which greatly increases the risk of electrical faults such as electric leakage and short circuit. Once the insulation layer is damaged, not only the safety and stability of electric power transmission will be affected, but also busbar needs to be repaired or replaced, which undoubtedly increases maintenance cost and downtime, and reduces the overall operation efficiency of wind power generation system.

[0005] Therefore, how to improve the insulation performance between busbar and support and avoid the problem of insulation decline caused by damage of busbar insulation surface becomes a key technical problem to be solved in current wind power field. CONTENT OF THE UTILITY MODEL

[0006] The utility model provides a kind of multi-busbar support support to the deficiency in the background art.

[0007] The technical scheme adopted by the utility model is: a kind of multi-busbar support support, including upper support and lower support, three arc grooves are arranged on the upper support and lower support, three busbar holes in "product" shape distribution are formed between the arc grooves on the upper support and lower support, and further including the insulation sleeve sleeved in the busbar hole, the inner side of the arc groove is provided with the positioning convex ring made of elastic material, the outer wall of the insulation sleeve is equipped with the positioning concave ring matched with the above positioning convex ring, and the inner wall of the insulation sleeve is provided with a plurality of movable ball equally spaced.

[0008] Further, the movable ball is made of glass fiber.

[0009] Further, the insulation sleeve comprises a thick sleeve and a thin sleeve, and the thick sleeve is provided with fixing screw holes on the upper and lower sides.

[0010] Further, the height difference between the thick sleeve and the thin sleeve is 0.5-1cm.

[0011] Further, the two side surfaces of the upper support and the lower support are provided with lightening grooves, and a plurality of reinforcing ribs are arranged in the lightening grooves.

[0012] Further, the long bolt is arranged, the two ends of the upper support and the lower support are provided with through assembly holes, the long bolt passes through the assembly holes of the upper support and the lower support to assemble and fix the upper support and the lower support, and a separation pad is arranged on the long bolt between the upper support and the lower support.

[0013] Further, the insulation sleeve comprises cross-linked polyethylene (XLPE), ceramic coating and polytetrafluoroethylene film which are sequentially compounded from inside to outside.

[0014] The utility model discloses the beneficial effect is:

[0015] 1. improve the insulation performance: through the insulation sleeve of the bus hole, change the mode of mainly relying on the bus outer insulation surface in the prior art, effectively improve the insulation performance between the bus and the upper support and the lower support. As an independent insulation component, the insulation sleeve can form a reliable insulation barrier between the bus and the support, reduce the risk of insulation failure caused by damage to the bus insulation surface, enhance the safety and stability in the process of power transmission, and reduce the probability of electrical faults such as leakage and short circuit.

[0016] 2. improve the service life: the setting of the insulation sleeve avoids the direct contact and friction between the bus and the support, thereby playing a good protection role on the insulation layer of the bus surface. Even when the bus is displaced or vibrated due to external forces such as wind force and mechanical vibration, the bus insulation surface will not be abraded by the support due to the isolation of the insulation sleeve, thereby prolonging the service life of the bus and improving the overall operation efficiency of the wind power generation system.

[0017] 3. Precise positioning of the insulation sleeve: the positioning convex ring made of elastic material arranged in the arc-shaped groove is matched with the positioning concave ring on the outer wall of the insulation sleeve, which can precisely position the insulation sleeve and effectively prevent the relative sliding of the insulation sleeve in the bus hole. This reliable positioning structure ensures that the insulation sleeve is always in the correct position, continuously plays its insulation and protection role, avoids the problem of insulation performance decline or direct contact between the bus and the support due to the displacement of the insulation sleeve, and further enhances the stability and reliability of the bus support support.

[0018] 4. Reduce friction damage: several movable balls are arranged on the inner wall of the insulating sleeve at equal intervals, which significantly reduces the relative friction between the busbar and the insulating sleeve. When the busbar slides in the insulating sleeve, the movable balls can convert sliding friction into rolling friction, greatly reducing the size of the friction force, avoiding scratching the surface of the busbar when sliding relative to each other, and protecting the integrity and insulation performance of the busbar.

[0019] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a structural schematic diagram of the utility model.

[0021] Fig. 2 It is a structural schematic diagram of the insulating sleeve.

[0022] Fig. 3 It is a sectional view of the insulating sleeve.

[0023] Figs. 1-3 In the middle: 1, upper support; 2, lower support; 3, arc-shaped groove; 4, busbar hole; 5, insulating sleeve; 6, positioning convex ring; 7, positioning concave ring; 8, movable ball; 9, thick sleeve; 10, thin sleeve; 11, fixed screw hole; 12, weight-reducing groove; 13, reinforcing rib; 14, long bolt; 15, assembly hole; 16, partition pad; 17, cross-linked polyethylene (XLPE); 18, ceramic coating; 19, polytetrafluoroethylene film. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0026] The utility model provides a kind of multi-busbar support bracket.

[0027] In the present embodiment, refer to Figs. 1-3The multi-bus support bracket comprises an upper bracket 1 and a lower bracket 2, three arc-shaped grooves 3 are arranged on the upper bracket 1 and the lower bracket 2, three bus holes 4 in the shape of a Chinese character 'pin' are formed between the arc-shaped grooves on the upper bracket and the lower bracket, an insulating sleeve 5 is sleeved in the bus hole, a positioning convex ring 6 made of elastic material is arranged on the inner side of the arc-shaped groove 3, a positioning concave ring 7 matched with the positioning convex ring is arranged on the outer wall of the insulating sleeve, and a plurality of movable balls 8 are arranged on the inner wall of the insulating sleeve 5 at equal intervals.

[0028] In the above technical solution, the bus holes in the shape of a Chinese character 'pin' can reasonably arrange multiple buses, improve the space utilization rate, and facilitate the installation and management of the multiple buses. The arrangement of the insulating sleeve effectively enhances the insulation performance between the bus and the bracket, avoids damage to the insulating surface of the bus due to direct contact with the bracket, and prolongs the service life of the bus. The cooperation of the positioning convex ring and the positioning concave ring can accurately position the insulating sleeve, prevent it from sliding in the bus hole, and ensure that the insulating sleeve always plays a good insulation and protection role. The movable balls on the inner wall of the insulating sleeve convert the sliding friction between the bus and the insulating sleeve into rolling friction, significantly reducing the friction, reducing the scratching of the surface of the bus, protecting the integrity of the bus, and reducing energy loss and improving power transmission efficiency.

[0029] Specifically, the movable balls are made of glass fiber.

[0030] In this embodiment, the movable balls made of glass fiber have the characteristics of high strength and high hardness, can withstand the pressure and friction generated by the bus during operation, are not easy to wear and damage, and can ensure long-term stable reduction of the friction between the bus and the insulating sleeve. At the same time, glass fiber is a good insulating material and does not affect the overall insulation performance of the insulating sleeve, further enhancing the insulation safety of the bus support bracket.

[0031] Specifically, the insulating sleeve comprises a thick sleeve 9 and a thin sleeve 10, and fixed screw holes 11 are arranged on the upper and lower sides of the thick sleeve; the height difference of the step formed between the thick sleeve and the thin sleeve is 0.5-1 cm.

[0032] In this embodiment, the insulating sleeve adopts the combined structure of the thick sleeve and the thin sleeve, and the fixed screw holes on the upper and lower sides of the thick sleeve facilitate the installation and fixation of the insulating sleeve, which can be firmly installed on the bus to prevent it from loosening or falling off, and ensure that the insulating sleeve stably plays the insulation and protection role.

[0033] Specifically, the upper bracket 1 and the lower bracket 2 are provided with weight-reducing grooves 12 on the two side surfaces, and a plurality of reinforcing ribs 13 are arranged in the weight-reducing grooves 12.

[0034] In the embodiment, the weight-reducing grooves on the two sides of the upper support and the lower support effectively reduce the overall weight of the support, reduce the material cost and the installation difficulty, and reduce the load requirement of the installation structure. The reinforcing ribs arranged in the weight-reducing grooves not only reduce the weight, but also enhance the structural strength and rigidity of the support, so that the support is not easy to deform or be damaged when bearing the weight of the busbar and external force, the stability and reliability of the busbar support are improved, and the service life of the support is prolonged.

[0035] Specifically, the upper support 1 and the lower support 2 are provided with through assembly holes 15 at two ends, and a long bolt 14 is arranged to pass through the assembly holes of the upper support 1 and the lower support 2 to assemble and fix the upper support and the lower support, and a separation pad 16 is sleeved on the long bolt between the upper support and the lower support.

[0036] In the embodiment, the arrangement of the long bolt and the assembly hole makes the assembly of the upper support and the lower support simple and convenient, and the two can be quickly and firmly connected together, thereby improving the installation efficiency. The separation pad sleeved on the long bolt between the upper support and the lower support can keep the relative position between the upper support and the lower support stable, prevent relative displacement of the two due to vibration during operation, and also has a certain buffering effect, thereby reducing the wear between the upper support and the lower support and enhancing the overall stability and reliability of the busbar support.

[0037] Specifically, the insulating sleeve comprises, from the inside to the outside, cross-linked polyethylene (XLPE) 17, ceramic coating 18 and polytetrafluoroethylene film 19.

[0038] In the embodiment, the cross-linked polyethylene (XLPE) has excellent electrical insulation performance, mechanical properties and aging resistance, and serves as the inner layer of the insulating sleeve to provide basic insulation protection for the busbar. The ceramic coating has extremely high insulation resistance, dielectric strength, high temperature resistance and chemical stability, and is compounded on the outer layer of the cross-linked polyethylene to further improve the insulation performance, high temperature resistance and corrosion resistance of the insulating sleeve and enhance the protection of the busbar. The polytetrafluoroethylene film has a low friction coefficient, high chemical stability and excellent insulation performance, and serves as the outermost layer of the insulating sleeve, which not only improves the insulation performance, but also reduces the surface friction coefficient, enhances the wear resistance, reduces the wear of the insulating sleeve by external objects, prolongs the service life of the insulating sleeve, and ensures the stable operation of the insulating sleeve in complex environments.

[0039] The insulating sleeve is made by first preparing a cross-linked polyethylene sleeve, extruding polyethylene resin into shape, and then cross-linking treatment. Next, a ceramic coating is applied by mixing ceramic powder with a binder and a solvent to form a coating material, which is applied to the surface of the cross-linked polyethylene sleeve by conventional processes such as spraying, and then dried and sintered at high temperature to form a dense structure. Finally, a polytetrafluoroethylene film is compounded, which can be done by hot pressing or adhesive bonding. Hot pressing is a process in which the film and the coating are combined at appropriate temperature and pressure. Adhesive bonding is a process in which a special adhesive is used to connect the two. These compounding methods are conventional processes in the field of material processing, and are mature in operation and controllable in cost, ensuring that the layers of the insulating sleeve are tightly bonded and exhibit good performance.

[0040] Skilled persons should know that although the utility model has been described in the above specific embodiments, the utility model idea is not limited to this utility model, and any modification using the utility model idea will be included in the scope of protection of this patent.

Claims

1. A multi-bus support bracket, comprising an upper bracket and a lower bracket, three arc-shaped slots are arranged on the upper bracket and the lower bracket, and three bus holes in a "pin" shape are formed between the arc-shaped slots on the upper bracket and the lower bracket, characterized in that: The insulating sleeve is sleeved in the bus bar hole, the inner side of the arc-shaped groove is provided with a positioning convex ring made of elastic material, the outer wall of the insulating sleeve is provided with a positioning concave ring matched with the positioning convex ring, and the inner wall of the insulating sleeve is provided with a plurality of movable rolling balls at equal intervals.

2. The multi-bus support cradle of claim 1, wherein: The movable rolling balls are made of glass fiber.

3. The multi-bus support cradle of claim 1, wherein: The insulating sleeve comprises a thick sleeve pipe and a thin sleeve pipe, and the upper and lower sides of the thick sleeve pipe are provided with fixed screw holes.

4. The multi-bus support cradle of claim 3, wherein: The height difference of the step formed between the thick sleeve pipe and the thin sleeve pipe is 0.5-1 cm.

5. The multi-bus support cradle of claim 1, wherein: The two side surfaces of the upper support and the lower support are provided with lightening grooves, and a plurality of reinforcing ribs are arranged in the lightening grooves.

6. The multi-bus support cradle of claim 1, wherein: The upper support and the lower support are assembled and fixed by a long bolt penetrating through the assembly holes at the two ends of the upper support and the lower support, and a separation pad is sleeved on the long bolt between the upper support and the lower support.

7. The multi-bus support cradle of claim 1, wherein: The insulating sleeve comprises, from inside to outside, cross-linked polyethylene (XLPE), ceramic coating and polytetrafluoroethylene film.

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