Lifting device for high-voltage bushing of transformer
By designing a high-voltage casing lifting device for transformers, the problem of interference with the installation end of the casing during lifting is solved, and the stable directional lifting of the casing is achieved, reducing the difficulty and risk of operation and improving operational safety sex.
Patent Information
- Application Number
- CN202420970052.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-07
AI Technical Summary
When replacing the sealing ring of the transformer high-voltage sleeve, in the prior art, there is a high-voltage sleeve that is prone to interfere with and bump with the sleeve installation end during lifting, resulting in high operational difficulty and high risk.
Design a high-pressure casing lifting device including a base, a hoisting device and a lifting cover. By fixing the high-pressure casing and performing directional hoisting, avoiding interference with the mounting end, and using oil cylinders, cylinders or electric cylinders as hoisting devices. Combining the semi-ring and support seat structure ensures stable lifting of the sleeve.
It effectively reduces the difficulty and risk of operating when replacing the high-pressure casing seal ring, ensures safety of the casing and the installation end, and improves the stability and operation reliability of the lifting cover.
Smart Images
Figure CN222159642U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformer maintenance tools, in particular to a transformer high-voltage bushing lifting device. Background Art
[0002] In the past, when replacing the internal sealing ring of the high-voltage bushing at the bushing installation end of the transformer, if the transformer is outdoors, the high-voltage bushing is generally lifted by a crane, and if the transformer is indoors, the high-voltage bushing is generally lifted by a bridge crane. This has problems such as high risk, low efficiency, and poor operability, especially when using a crane to lift the high-voltage bushing installed at an angle. Figure 6 , the high-voltage bushing 90 is only lifted by the sling 100, and the high-voltage bushing 90 will swing in the vertical direction during lifting, and interference will occur at the interface between the high-voltage bushing 90 and the bushing installation end 81, which will cause damage to the high-voltage bushing 90 and the bushing installation end 81. Therefore, in actual operation, a manual hoist is required at the lower end of the high-voltage bushing 90 for lifting, which is difficult and risky. Utility Model Content
[0003] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a transformer high-voltage bushing lifting device. The high-voltage bushing is fixed by the lifting device of the present application and then directionally lifted, so as to ensure that when the sealing ring of the high-voltage bushing is replaced, the high-voltage bushing will not interfere with or collide with the bushing installation end of the transformer, thereby reducing the difficulty and risk of the operation.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a transformer high-voltage bushing lifting device, including a base, a lifting device and a lifting cover, the base is used to be installed on the top of the bushing installation end of the transformer, a channel for placing the high-voltage bushing is arranged in the middle of the base, the lifting cover is located above the base, at least two lifting devices are installed on the base around the lifting cover, the lifting device is connected to the lifting cover support, and the lifting cover is used to be connected to the high-voltage bushing.
[0005] The lifting cover includes a first half ring, the lifting device is connected to the first half ring, a U-shaped plate is arranged at the lower end of the first half ring, the opening side of the U-shaped plate corresponds to the opening side of the first half ring, the U-shaped plate is provided with bolt mounting holes, and the U-shaped plate is used to connect with the high-voltage bushing.
[0006] The lifting cover includes a first half ring and a second half ring, the lifting device is connected to the first half ring, the second half ring is located on one side of the channel of the base, first connecting plates are respectively provided at both ends of the first half ring, and second connecting plates are respectively provided at both ends of the second half ring. Bolts pass through the holes on the second connecting plates and are screwed to the threaded holes on the first connecting plates, thereby connecting the second half ring to the first half ring. Half rings are respectively provided at the lower ends of the first half ring and the second half ring, and bolt mounting holes are provided on the half rings, and the half rings are used to connect with the high-voltage bushing.
[0007] An outwardly extending extension seat is arranged at the upper end of the outer wall of the first half ring, and the jacking device is connected to the extension seat.
[0008] A first guide column is installed on the base at one side of the first half ring, and a first ear seat extending outward is arranged on the outer wall of the first half ring. The first ear seat is connected with the first guide column in a sliding and guiding manner.
[0009] A first support seat is also installed on the base, and the lower end of the first guide column is connected and fixed to the base, and the other end is connected and fixed to the first support seat.
[0010] A second support seat is installed on the base at one side of the channel, a connecting plate is provided at the bottom of the second support seat, the second support seat is installed on the base by bolts, the upper and lower ends of the second guide column are respectively connected and fixed to the second support seat and the connecting plate, and the outer wall of the second semi-ring is provided with a second ear seat extending outward, and the second ear seat is connected to the second guide column sliding guide.
[0011] The lifting device is an oil cylinder, a gas cylinder or an electric cylinder.
[0012] The utility model has the following beneficial effects:
[0013] 1. The utility model fixes the high-voltage bushing through a lifting device and then performs directional lifting, thereby ensuring that when the sealing ring of the high-voltage bushing is replaced, the high-voltage bushing will not interfere with or collide with the bushing installation end of the transformer, thereby reducing the difficulty and risk of the operation.
[0014] 2. The lifting cover of the utility model comprises a first half ring in the first embodiment, so that the lifting cover can be conveniently inserted into the high-voltage bushing.
[0015] 3. The lifting cover of the utility model is composed of a first half ring and a second half ring in the second embodiment. During installation, the second half ring is disassembled first. When the first half ring is inserted into the high-voltage bushing, the second half ring is connected to the first half ring by bolts, and then the half ring is connected to the flange on the high-voltage bushing by bolts, so that the high-voltage bushing can be lifted more stably.
[0016] 4. A first guide column is installed on the base of the utility model at one side of the first half ring, and a first ear seat extending outward is provided on the outer wall of the first half ring. The first ear seat is slidably guided and matched with the first guide column, thereby improving the stability of the lifting cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model.
[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model from another viewing angle.
[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the second embodiment of the utility model.
[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the second embodiment of the utility model from another viewing angle.
[0022] Figure 5 This is a diagram of one of the usage states of the utility model.
[0023] Figure 6 This is another usage state diagram of the utility model.
[0024] In the figure:
[0025] Base 10, channel 11, jacking device 20, lifting cover 30, U-shaped plate 31, extending seat 32, first half ring 33, first connecting plate 331, first ear seat 332, second half ring 34, second connecting plate 341, second ear seat 342, half ring 35, first support seat 40, first guide column 50, second support seat 60, connecting plate 61, second guide column 70, transformer 80, bushing mounting end 81, high-voltage bushing 90, sling 100. DETAILED DESCRIPTION
[0026] Embodiment 1:
[0027] See also Figure 1-6A transformer high-voltage bushing lifting device includes a base 10, a lifting device 20 and a lifting cover 30. The base 10 is used to be installed on the top of the bushing installation end 81 of the transformer 80. A channel 11 for placing the high-voltage bushing 90 is arranged in the middle of the base 10. The lifting cover 30 is located above the base 10. Two lifting devices 20 are symmetrically installed on the base 10 around the lifting cover 30. The lifting device 20 is supported and connected with the lifting cover 30. The lifting cover 30 is used to connect with the high-voltage bushing 90. The lifting device of the present application fixes the high-voltage bushing 90 and then lifts it in a directional manner, so as to ensure that when the sealing ring of the high-voltage bushing is replaced, the high-voltage bushing will not interfere with or collide with the bushing installation end 81 of the transformer 80, thereby reducing the difficulty and risk of the operation.
[0028] See also Figure 5 When the bushing mounting ends 81 of the transformer 80 are all vertical structures, the base 10 can be placed on the bushing mounting ends 81, see Figure 6 When the bushing installation end 81 of the transformer 80 still has an inclined structure, a bolt hole is provided on the base 10, and the base 10 and the bushing installation end 81 are connected and fixed by bolts. Figure 1 The channel on the base 10 is a U-shaped notch, so that the high-voltage bushing 90 can be loaded from the side. After the lifting cover 30 is connected to the flange on the high-voltage bushing 90, the lifting cover 30 is lifted by the lifting device 20, so that the high-voltage bushing 90 is directed upward.
[0029] See also Figure 1 , 2 The lifting cover 30 includes a first half ring 33, the lifting device 20 is connected to the first half ring 33, a U-shaped plate 31 is provided at the lower end of the first half ring 33, the opening side of the U-shaped plate 31 corresponds to the opening side of the first half ring 33, and a bolt mounting hole is provided on the U-shaped plate 31, and the U-shaped plate 31 is used to connect with the high-voltage bushing 90. Through the above structure, the lifting cover 30 can be conveniently inserted into the high-voltage bushing 90. In this embodiment, two lifting devices 20 are provided, and the lifting devices 20 are symmetrically installed at both ends of the first half ring 33.
[0030] Embodiment 2:
[0031] The difference from the first embodiment is that, see Figure 3 , 4The lifting cover 30 includes a first half ring 33 and a second half ring 34. The lifting device 20 is connected to the first half ring 33. The second half ring 34 is located at one side of the channel 11 of the base 10. First connecting plates 331 are respectively provided at both ends of the first half ring 33, and second connecting plates 341 are respectively provided at both ends of the second half ring 34. Bolts pass through the holes on the second connecting plates 341 and are screwed with the threaded holes on the first connecting plates 331, so as to connect the second half ring 34 with the first half ring 33. Half rings 35 are respectively provided at the lower ends of the first half ring 33 and the second half ring 34. Bolt mounting holes are provided on the half ring 35, and the half ring 35 is used to connect with the high-voltage bushing 90. Through the above structure, the lifting cover 30 is composed of a first half ring 33 and a second half ring 34. During installation, the second half ring 34 is first disassembled. When the first half ring 33 is inserted into the high-voltage bushing 90, the second half ring 34 is connected to the first half ring 33 by bolts, and then the half ring 35 is connected to the flange on the high-voltage bushing 90 by bolts, so that the high-voltage bushing 90 can be lifted more stably.
[0032] Embodiment three:
[0033] Based on the first and second embodiments, see Figure 2 , 3 The upper end of the outer wall of the first half ring 33 is provided with an extension seat 32 extending outward, and the jacking device 20 is connected to the extension seat 32. The extension seat 32 and the first half ring 33 are welded into an integral structure, and the extension seat 32 is located at the top of the first half ring 33, reducing the height of the first half ring 33. Specifically, the threaded section at the end of the extension end of the jacking device 20 is threadedly screwed and fixed to the extension seat 32.
[0034] Embodiment 4:
[0035] Based on Example 3, see Figure 2 A first guide post 50 is installed on the base 10 at one side of the first half ring 33, and a first ear seat 332 extending outward is provided on the outer wall of the first half ring 33. The first ear seat 332 is slidably guided and matched with the first guide post 50. The above structure improves the stability of the lifting of the first half ring 33.
[0036] Furthermore, a first support seat 40 is mounted on the base 10, and the lower end of the first guide column 50 is connected and fixed to the base 10, and the other end is connected and fixed to the first support seat 40. The first support seat 40 is a door-shaped frame structure, and the first support seat 40 supports the upper end of the first guide column 50, thereby improving the stability of the first guide column 50.
[0037] Embodiment five:
[0038] Based on Example 2, see Figure 3 , 4A second support seat 60 is installed on the base 10 at one side of the channel 11, and a connecting plate 61 is provided at the bottom of the second support seat 60. The second support seat 60 is installed on the base 10 by bolts. The upper and lower ends of the second guide column 70 are respectively connected and fixed to the second support seat 60 and the connecting plate 61. The outer wall of the second semi-ring 34 is provided with a second ear seat 342 extending outward, and the second ear seat 342 is connected with the second guide column 70 in a sliding and guiding manner. The lifting cover 30 is guided by two second guide columns 70, which further improves the stability of the lifting cover 30. The second support seat 60, the second guide column 70 and the second semi-ring 34 are an integrated structure. When installing, the second support seat 60, the second guide column 70 and the second semi-ring 34 need to be disassembled, and after the first semi-ring 33 is inserted into the high-voltage bushing 90, the second semi-ring 34 is connected to the first semi-ring 33, and then the second support seat 60 is connected to the base 10 by bolts.
[0039] In the above embodiment, the lifting device 20 may be an oil cylinder, a gas cylinder or an electric cylinder.
[0040] The working principle or action process of the utility model is as follows:
[0041] See also Figure 5 When the bushing mounting ends 81 of the transformer 80 are all vertical structures, the lifting device of the first embodiment can be used, that is, Figure 1 , 2 The lifting device shown in FIG. First, the lifting device 20 is retracted, the lifting cover 30 is lowered to the lowest position, and the base 10 is placed on the bushing installation end 81 of the transformer 80. The channel on the base 10 is a U-shaped notch, so that the high-voltage bushing 90 can be installed from the side. After the lifting cover 30 is connected to the flange on the high-voltage bushing 90, the lifting cover 30 is lifted by the lifting device 20, so that the high-voltage bushing 90 is directed upward.
[0042] See also Figure 6 When the bushing mounting end 81 of the transformer 80 has an inclined structure, during installation, the second half ring 34 is first disassembled, and when the first half ring 33 is inserted into the high-voltage bushing 90, the base 10 is fixed to the bushing mounting end 81 by bolts, and then the second half ring 34 is connected to the first half ring 33 by bolts, and then the half ring 35 is connected to the flange on the high-voltage bushing 90 by bolts, so that the high-voltage bushing 90 can be lifted more stably. When lifting the high-voltage bushing 90, a sling 100 is tied to the upper end of the high-voltage bushing 90, and the sling 100 is hung on the hook of the lifting equipment for auxiliary lifting to prevent the high-voltage bushing 90 from overturning.
Claims
1. A transformer high voltage bushing lifting device, characterized in that: The invention comprises a base (10), a lifting device (20) and a lifting cover (30), wherein the base (10) is used to be installed on the top of the bushing installation end (81) of the transformer (80), a channel (11) for placing a high-voltage bushing (90) is arranged in the middle of the base (10), the lifting cover (30) is located above the base (10), at least two lifting devices (20) are installed on the base (10) around the lifting cover (30), the lifting devices (20) are supported and connected to the lifting cover (30), and the lifting cover (30) is used to be connected to the high-voltage bushing (90).
2. A transformer high voltage bushing lifting device according to claim 1, characterized in that: The lifting cover (30) comprises a first half ring (33), the lifting device (20) is connected to the first half ring (33), a U-shaped plate (31) is provided at the lower end of the first half ring (33), an opening side of the U-shaped plate (31) corresponds to an opening side of the first half ring (33), a bolt mounting hole is provided on the U-shaped plate (31), and the U-shaped plate (31) is used to be connected to the high-voltage bushing (90).
3. A transformer high voltage bushing lifting device according to claim 1, characterized in that: The lifting cover (30) comprises a first half ring (33) and a second half ring (34); the lifting device (20) is connected to the first half ring (33); the second half ring (34) is located on one side of the channel (11) of the base (10); first connecting plates (331) are respectively provided at both ends of the first half ring (33); second connecting plates (341) are respectively provided at both ends of the second half ring (34); bolts pass through holes on the second connecting plates (341) and are screwed to threaded holes on the first connecting plates (331), thereby connecting the second half ring (34) to the first half ring (33); half rings (35) are respectively provided at the lower ends of the first half ring (33) and the second half ring (34); bolt mounting holes are provided on the half rings (35); the half rings (35) are used to connect to the high-voltage bushing (90).
4. A transformer high voltage bushing lifting device according to claim 2 or 3, characterized in that: An outwardly extending extension seat (32) is provided at the upper end of the outer wall of the first half ring (33), and the jacking device (20) is connected to the extension seat (32).
5. A transformer high voltage bushing lifting device according to claim 2 or 3, characterized in that: A first guide column (50) is mounted on the base (10) at one side of the first half ring (33); an outer wall of the first half ring (33) is provided with a first ear seat (332) extending outward; the first ear seat (332) is connected to the first guide column (50) in a sliding and guiding manner.
6. A transformer high voltage bushing lifting device according to claim 5, characterized in that: A first support seat (40) is also mounted on the base (10); the lower end of the first guide column (50) is connected and fixed to the base (10), and the other end is connected and fixed to the first support seat (40).
7. The transformer high voltage bushing lifting device according to claim 3, characterized in that: A second support seat (60) is installed on the base (10) at one side of the channel (11), a connecting plate (61) is provided at the bottom of the second support seat (60), the second support seat (60) is installed on the base (10) by bolts, the upper and lower ends of the second guide column (70) are respectively connected and fixed to the second support seat (60) and the connecting plate (61), and the outer wall of the second half ring (34) is provided with a second ear seat (342) extending outward, and the second ear seat (342) is connected to the second guide column (70) in a sliding and guiding manner.
8. The transformer high voltage bushing lifting device according to claim 1, characterized in that: The lifting device (20) is an oil cylinder, a gas cylinder or an electric cylinder.