Replacing and transferring combined platform of 500-kilovolt circuit breaker hydraulic disc spring mechanism

Abstract

The invention relates to a replacing and transferring combined platform of a 500-kilovolt circuit breaker hydraulic disc spring mechanism, which comprises an upper part and a lower part, the upper part is a transferring and bearing device, the transferring and bearing device comprises an upper-layer plate and a lower-layer plate, the upper-layer plate and the lower-layer plate are connected through a lead screw, and the lead screw is connected with the transferring and bearing device; a tilt angle sensor is arranged on one side of the long edge of the upper-layer plate, and a plurality of universal wheels are arranged at the bottom of the lower-layer plate; the lower part is a lifting platform device, the lifting platform device is formed by splicing a plurality of modules of different sizes, and each module is composed of a rail guide table and telescopic supporting legs arranged below the rail guide table. By using the platform, the power failure range can be reduced, the risk of power grid operation can be reduced, flexible replacement and transfer of the mechanism can be realized under the conditions of different transformer substations, different grounds, different foundations and different frameworks, the working condition adaptability is high, the field operation practicability is high, the platform is safe, stable, efficient and convenient, and the application range of the device is greatly expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance and replacement of substation equipment, and in particular to a replacement and transportation combined platform for a hydraulic disc spring mechanism of a 500 kV circuit breaker. Background Art

[0002] With the rapid development of the power industry and the improvement of the power grid level, the stable operation of UHV and EHV substations has become particularly important, and higher and higher requirements have been put forward for the circuit breaker operating mechanism. As a key link, the disc spring energy storage hydraulic mechanism has been widely used in UHV and EHV substations due to its low probability of refusal and stable output. However, as the use time increases, these mechanisms may encounter some problems, such as frequent pressure, hydraulic oil leakage and other serious defects, which may require emergency treatment in a short time, such as 12 hours.

[0003] At present, in the maintenance practice of 500 kV circuit breaker hydraulic disc spring mechanism, the replacement of hydraulic disc spring mechanism mostly relies on unconventional tools such as jacks and hand winches, tools such as forklifts or cranes, and special operation vehicles. However, these methods have exposed some problems in actual operation. For example, tools such as jacks and hand winches are slow in disassembling and moving mechanisms. Although unconventional tools such as jacks, hand winches and slings can meet the needs of weighing and fine operation in mechanism replacement, they need to rely entirely on manual operation to move the mechanism during the disassembly and assembly process, which is not efficient; the weight of commonly used models of mechanisms generally exceeds 500 kilograms. This manual transfer method is obviously not only inefficient, but also time-consuming. In an emergency, this inefficient replacement method is often difficult to complete within the specified time, posing a threat to the efficient and stable operation of the power system. Operational limitations of forklifts: Forklifts perform well in terms of carrying capacity and have a relatively small operating range, but their operation is severely limited by the ground conditions of the substation and the surrounding environment. For example, when the work site is too close to the foundation, cable trench or control cabinet, the operation of the forklift will be greatly affected or even unable to work normally, which means that only a small number of work sites can meet the requirements of forklift operations, greatly limiting its popularity and efficiency in practical applications, and its versatility and flexibility are poor; while cranes, as key special operation vehicles in maintenance operations, have significant advantages due to their great power and are not restricted by terrain. However, when operating a crane, the operating radius is large and it is easy to approach live equipment, so its risk factor is relatively high, which increases the danger of the operation. Therefore, crane operations may increase the scope of power outages due to insufficient safety distance, which not only affects the reliability of the power system, but also brings great safety risks to operators. Summary of the invention

[0004] The purpose of the present invention is to provide a combined platform for replacing and transporting the hydraulic disc spring mechanism of a 500 kV circuit breaker, aiming to solve the problem of efficiently and safely completing the mechanism replacement under the harsh conditions of short power outage time and small power outage range, regardless of the ground environment. This solution not only requires improving the replacement efficiency and reducing the power outage time, but also ensuring the safety and versatility of the operation process to meet the actual needs of different operation sites. The present invention provides a combined platform for replacing and transporting a hydraulic disc spring mechanism of a 500 kV circuit breaker. The combined platform includes two parts: an upper part and an lower part. Upper part: a transport bearing device, the transport bearing device comprises an upper plate and a lower plate, the upper plate and the lower plate are connected by a lead screw, a tilt sensor is arranged on one side of the long side of the upper plate, and a plurality of universal wheels are arranged at the bottom of the lower plate; Lower part: a lifting platform device, which is composed of a plurality of modules of different sizes, and each module is composed of a track guide platform and a retractable supporting leg arranged below the track guide platform.

[0005] Baffles are arranged on both sides of the long sides of the upper plate, and symmetrical concave pillow blocks are respectively arranged on both sides of the short sides of the upper plate.

[0006] The inclination sensor is arranged at the H1 lead screw on one side of the long side of the upper plate.

[0007] The plurality of universal wheels are arranged in order in the transverse and longitudinal directions.

[0008] The plurality of modules of different sizes include transverse splicing modules and longitudinal splicing modules. The transverse splicing module has a width of 100 cm and lengths of 60 cm, 100 cm and 140 cm. The longitudinal splicing module has a width of 60 cm and lengths of 80 cm, 120 cm and 160 cm respectively.

[0009] The number of the lead screws is 6-8, which are respectively arranged at the four corners and the middle position between the upper plate and the lower plate, and the height of each lead screw is adjustable.

[0010] The retractable supporting legs are arranged in 4 to 6 numbers, and are respectively arranged at the four corners below the track guide surface and at both sides of the middle area.

[0011] The support leg comprises an upper support leg and a lower support leg, the upper support leg and the lower support leg are connected by buckles or bolts, and the support leg is provided with limiting holes spaced a certain distance apart.

[0012] The lifting platform device assembled by splicing is L-shaped or straight-line-shaped.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Significantly reduced power outage scope: This solves the problem that the traditional replacement method uses a crane for operation, which is limited by the operating radius and safety distance, and usually requires the entire line or even the busbar to be shut down, greatly expanding the scope of the power outage. This solution uses precise design and optimized operation procedures to only shut down a single circuit breaker, thereby effectively avoiding the expansion of the power outage scope, reducing not only the risk of power grid operation, but also the risk of on-site operations, making safety management more controllable.

[0014] 2. Improved versatility: The combined modular design adopted in this solution has extremely high flexibility and adaptability. Modules of different sizes can be easily and flexibly combined into L-shaped or linear track guide tables of different lengths to meet the replacement needs of different work sites. At the same time, the height adjustment function of the support legs enables this solution to achieve safe and stable transportation of the mechanism under different substations, different ground, foundation, and frame conditions. Its high versatility ensures the effective application of this solution in various complex environments.

[0015] 3. Improved adjustment accuracy: The transfer platform in this solution is equipped with 6-8 lifting screws, which enables the platform to achieve fine adjustment and load-bearing in four degrees of freedom. The configured inclination sensor can detect the height and inclination of the platform in real time, and can calculate the height that each screw needs to be adjusted based on the detected data. This highly automated adjustment method not only improves the operating efficiency, but also ensures the accuracy and stability of the platform adjustment, providing a strong technical guarantee for the replacement of the hydraulic disc spring mechanism of the ultra-high voltage circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the L-shaped overall structure of a combined platform for replacing and transporting a hydraulic disc spring mechanism of a 500 kV circuit breaker proposed by the present invention.

[0017] Figure 2 for Figure 1 Side view of the mid-transfer load carrier.

[0018] Figure 3 for Figure 1 Structural diagram of concave pillow block.

[0019] Figure 4 for Figure 1 The diagram of the arrangement structure of the universal wheels arranged at the bottom of the lower plate.

[0020] Figure 5 for Figure 1 The lower part of the figure shows a plurality of modules of different sizes that make up the lifting platform device.

[0021] Figure 6 for Figure 5 Schematic diagram of the middle support leg structure.

[0022] Figure 7 It is a schematic diagram of the linear combined platform structure.

[0023] Figure 8 This is a working status diagram of the L-shaped combined platform. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] See also Figures 1 to 8 These eight figures show the overall structure of a replacement and transportation combined platform for a 500 kV circuit breaker hydraulic disc spring mechanism proposed by the present invention. The present invention proposes a combined platform for replacing and transporting a 500 kV circuit breaker hydraulic disc spring mechanism, comprising an upper and lower part: wherein the upper part comprises: a transport bearing device 1, wherein the transport bearing device 1 adopts a double-layer structural design, comprising an upper plate 11 and a lower plate 12, and the size is preferably 100cm*60cm, which meets the load-bearing size of most ultra-high voltage 500 kV hydraulic disc spring mechanisms, wherein the upper plate 11 and the lower plate 12 are connected by a lead screw 3, wherein the upper plate 11 is a bearing layer, used to carry the mechanism to be replaced, wherein an inclination sensor 4 is provided on one side of the long side of the upper plate 11, and a plurality of universal wheels 5 are provided at the bottom of the lower plate 12, which are used to move the mechanism for transport and replacement; wherein the number of universal wheels in this embodiment is preferably 24, and they are arranged in an orderly manner in a horizontal and vertical direction below the lower plate 12 to achieve free movement under high load.

[0026] The lower part of the platform includes: a lifting platform device 2, which is composed of a plurality of modules of different sizes, and each module is composed of a track guide platform 21 and a retractable support leg 22 arranged below the track guide platform 21.

[0027] Among them, baffles 6 are arranged on both sides of the long sides of the upper plate 11 to shield the replacement mechanism and prevent it from falling. Symmetrical concave pillow blocks 7 are arranged on both sides of the short sides of the upper plate to place the replacement mechanism, so that the replacement mechanism can be stably loaded and not easily moved. It also plays the role of supporting the mechanism and buffering the pressure of the bearing layer.

[0028] The number of the lead screws is 6-8. In this embodiment, 6 liftable lead screw structures are provided, which are respectively located at the four corners and the middle position between the upper plate and the lower plate, and are represented by H1-H6. Figure 2As shown, the screw at the lower left corner of the front side is H1, and the screw opposite to H1 is H2. Since it is not shown in the occlusion diagram, screw H3 is not shown either, and H3 is opposite to H4. H6 is not shown either, and H6 is opposite to H5. The height of each screw can be freely adjusted, and the screws at the four corners are used to realize the four degrees of freedom adjustment of the bearing layer, and the two screws in the middle position play an auxiliary load-bearing role.

[0029] The inclination sensor is arranged at the H1 screw on one side of the long side of the upper plate 11, and is used to provide the xyz three-axis inclination, calculate the height deviation of the screw at the 4 corners, and assist in adjusting the height of the bearing layer. This is achieved as follows: the inclination sensor 4 is located at the H1 screw on the long side of the bearing layer. Assuming that the distance from H1 to H4 is L, the distance from H1 to H2 is W, the inclination angle in the x direction is α, and the inclination angle in the y direction is β, the H1 screw is taken as the target height, and the height of H2 required to be adjusted is: H2=-W sinα; The required adjustment height of H3 is: H3=-Lsinα-Wsinβ; The required adjustment height of H4 is: H4=-Lsinα; Adjust the height of H2-H4 according to the calculated value, and adjust the auxiliary load-bearing of H5 and H6 according to the adjusted height.

[0030] The change of the xy axis is related to the horizontal plane, that is, the height of the lead screw. The change of the z axis is the rotation along the z axis, which has nothing to do with the change of the relative height of the six lead screws, and the expression of Z is not reflected here.

[0031] The plurality of modules of different sizes include transverse splicing modules and longitudinal splicing modules, wherein the transverse splicing module has a width of 100 cm and lengths of 60 cm, 100 cm and 140 cm, and the longitudinal splicing module has a width of 60 cm and lengths of 80 cm, 120 cm and 160 cm respectively.

[0032] The retractable supporting legs are provided in 4-6 numbers, which are respectively arranged at the four corners below the track guide surface and at both sides of the middle area. In this embodiment, the number of supporting legs is 4.

[0033] The support legs include an upper support leg and a lower support leg, and the upper support leg and the lower support leg are connected by buckles or bolts. Limiting holes 8 spaced a certain distance apart are provided on the support legs. The height of the support legs can be adjusted according to on-site working conditions to achieve consistent height of each module under variable ground environments.

[0034] The combined platform can be spliced ​​into an L-shaped or linear platform by the lower lifting platform device, wherein the L-shaped and linear spliced ​​rail guide platforms are used for the transportation of the transfer platform carrying the circuit breaker mechanism. The lower lifting platform adopts a combined splicing method, using a multi-size, multi-module design, and can select the corresponding modules according to the ground environment of the work site, such as foundation, frame, grass, etc., and splice into L-shaped or linear rail guide surfaces of different sizes. The selection depends on the actual environment of the substation equipment and the handling conditions of the platform after the track transfer. Figure 8 As shown, the front frame of the mechanism does not have the conditions for longitudinal transfer, so a splicing module of appropriate length is selected to be combined into an L-shaped track guide platform, and the circuit breaker mechanism is transferred to the channel for the next transfer. Similarly, some substations only have the conditions for longitudinal transportation, so a splicing module of a certain length is selected to be combined into a linear track guide platform for transportation. When working, first, select the appropriate track guide platform module according to the on-site conditions, splice the track guide platform module and adjust the height of the guide platform to ensure its stability and applicability. Then, place the transfer platform under the mechanism and adjust its height to fit the mechanism. Finally, disassemble the mechanism and export it along the track guide platform, so as to achieve versatility in different ground environments, so as to efficiently and conveniently replace the mechanism, improve the replacement efficiency, reduce the power outage time, and ensure the safety and versatility of the operation process. It is suitable for the replacement requirements of multiple scenarios and solves the defects of the prior art.

[0035] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A combined platform for replacing and transporting a hydraulic disc spring mechanism of a 500 kV circuit breaker, characterized in that: The combined platform consists of two parts: Upper part: a transport bearing device, the transport bearing device comprises an upper plate and a lower plate, the upper plate and the lower plate are connected by a lead screw, a tilt sensor is arranged on one side of the long side of the upper plate, and a plurality of universal wheels are arranged at the bottom of the lower plate; Lower part: a lifting platform device, which is composed of a plurality of modules of different sizes, and each module is composed of a track guide platform and a retractable supporting leg arranged below the track guide platform.

2. The combined platform for replacing and transporting the hydraulic disc spring mechanism of a 500 kV circuit breaker according to claim 1 is characterized in that: Baffles are arranged on both sides of the long sides of the upper plate, and symmetrical concave pillow blocks are respectively arranged on both sides of the short sides of the upper plate.

3. The combined platform for replacing and transporting the hydraulic disc spring mechanism of a 500 kV circuit breaker according to claim 1 is characterized in that: The inclination sensor is arranged at the H1 lead screw on one side of the long side of the upper plate.

4. The combined platform for replacing and transporting the hydraulic disc spring mechanism of a 500 kV circuit breaker according to claim 1 is characterized in that: The plurality of modules of different sizes include transverse splicing modules and longitudinal splicing modules. The transverse splicing module has a width of 100 cm and lengths of 60 cm, 100 cm and 140 cm. The longitudinal splicing module has a width of 60 cm and lengths of 80 cm, 120 cm and 160 cm respectively.

5. The combined platform for replacing and transporting the hydraulic disc spring mechanism of a 500 kV circuit breaker according to claim 1 is characterized in that: The number of the lead screws is 6-8, which are respectively arranged at the four corners and the middle position between the upper plate and the lower plate, and the height of each lead screw is adjustable.

6. The combined platform for replacing and transporting the hydraulic disc spring mechanism of a 500 kV circuit breaker according to claim 1 is characterized in that: The retractable supporting legs are arranged in 4 to 6 numbers, and are respectively arranged at the four corners below the track guide surface and at both sides of the middle area.

7. The combined platform for replacing and transporting the hydraulic disc spring mechanism of a 500 kV circuit breaker according to claim 1 is characterized in that: The supporting legs include an upper supporting leg and a lower supporting leg, the upper supporting leg and the lower supporting leg are connected by buckles or bolts, and limiting holes spaced a certain distance apart are provided on the supporting legs.

8. The combined platform for replacing and transporting the hydraulic disc spring mechanism of a 500 kV circuit breaker according to claim 1 is characterized in that: The combined platform is L-shaped or straight-line.

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