Transformer on-load tap-changer placing tool

Abstract

The invention belongs to the technical field of transformer production and manufacturing, and relates to a transformer on-load tap-changer placing tooling, a tooling three-dimensional framework is an I-shaped multi-layer three-dimensional framework, one side of the tooling three-dimensional framework in the long axis direction is higher than the other side of the tooling three-dimensional framework, and an operation channel is arranged in the middle of the tooling three-dimensional framework in the short axis direction. A first walking ladder is arranged in the operation channel on the low side of the tool three-dimensional framework, a second walking ladder is arranged in the operation channel on the high side of the tool three-dimensional framework, a first operation platform is arranged between the top of the first walking ladder and the bottom of the second walking ladder, and three-dimensional framework bottom layer bases are arranged at the positions, on the two sides of the operation channel, of the bottom of the tool three-dimensional framework. A plurality of U-shaped suspended supporting steel plates are arranged at the top of the tool three-dimensional framework on the two sides of the operation channel, and internal threaded holes matched with connecting holes of a head cover flange of the on-load tap-changer are formed in the U-shaped suspended supporting steel plates. The two-side symmetrical layout in the short-axis direction is adopted, and the middle area is an operation space, so that the on-load tap-changer is convenient to check and detect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of transformer production and manufacturing, and particularly relates to a transformer on-load tap changer placing tool. BACKGROUND

[0002] In the process of transformer manufacturing, on-load tap changers are stored in the transformer production site, and are connected and assembled to the transformer body according to technical requirements.

[0003] However, in the actual production process of transformers, on-load tap changers of different manufacturers and different models are mixed in a unified area, and when they are taken, the manufacturer, model and other information materials need to be checked, and operations such as internal and external appearance inspection and electrical detection are required, which requires multiple people to cooperate and use a ladder tool frame for climbing operation, and the production efficiency is low. The on-load tap changer is composed of an upper oil chamber (switching switch) and a lower tap selector, with a total height of about 2.55 m, and the center of gravity is located in the upper part of the tap selector, so there is a risk of falling during hoisting. SUMMARY

[0004] In order to solve the above technical problems existing in the prior art, the present application provides a tool for realizing the standardized classification and placement of on-load tap changers in the process of transformer production, and is equipped with a reliable fixing structure to eliminate the safety risk of on-load tap changer falling. The technical scheme adopted by the present application is as follows: The transformer on-load tap changer placing tool comprises a tool three-dimensional framework, the tool three-dimensional framework is an I-shaped multilayer three-dimensional framework with a narrow upper part and a wide lower part, the height of one side of the long axis direction of the tool three-dimensional framework is higher than that of the other side, an operating channel is arranged at the middle position of the short axis direction of the tool three-dimensional framework, a ladder one is fixedly arranged in the operating channel of the side of the tool three-dimensional framework with low height, a ladder two is fixedly arranged in the operating channel of the side of the tool three-dimensional framework with high height, an operating platform one is fixedly arranged between the top of the ladder one and the bottom of the ladder two, an operating platform two is fixedly arranged between the outer edge of the top of the ladder two and the outer edge of the tool three-dimensional framework, a three-dimensional framework bottom base is fixedly arranged at the bottom of the tool three-dimensional framework on both sides of the operating channel, a plurality of U-shaped suspended support steel plates are fixedly arranged at the top of the tool three-dimensional framework on both sides of the operating channel, the opening of the U-shaped suspended support steel plate faces outward, the opening diameter of the U-shaped suspended support steel plate is smaller than the flange diameter of the head cover of the on-load tap changer, and an internal thread hole is formed in the U-shaped suspended support steel plate, which is matched with the connecting hole of the flange of the head cover of the on-load tap changer.

[0005] Preferably, handrails are fixedly arranged on the tool three-dimensional framework on both sides above the ladder one, guardrails one are fixedly arranged on the tool three-dimensional framework on both sides above the operating platform one, guardrails two are fixedly arranged on the tool three-dimensional framework on both sides above the operating platform two, and skirting lines are fixedly arranged on both sides of the operating platform one and the operating platform two.

[0006] The upper surface of the U-shaped suspended support steel plate is preferably bonded with a U-shaped insulating wood plate matching the structure, and the U-shaped insulating wood plate is provided with through holes matching the internal threaded holes of the U-shaped suspended support steel plate.

[0007] Preferably, four annular steel hanging ears are fixedly arranged at the four corner positions of the top of the tool three-dimensional framework.

[0008] Preferably, four steel horizontal adjusting foot cup mounting members are fixedly arranged at the four corner positions of the bottom of the tool three-dimensional framework in the long shaft direction outer side, the horizontal adjusting foot cup mounting member is in L-shaped structure, and the horizontal adjusting foot cup is fixedly installed on the horizontal adjusting foot cup mounting member through bolts.

[0009] Preferably, an oil receiving groove is arranged on the upper surface of the bottom layer base of the three-dimensional framework, and the oil receiving groove is located directly below the on-load tap changer.

[0010] Preferably, the bottom of the tool three-dimensional framework is a rectangular steel pipe.

[0011] The present application has the following beneficial effects: The transformer on-load tap changer placing tool of the present application adopts a short shaft direction two-side symmetrical layout, the middle region is an operator operation space, the on-load tap changer is distributed in a double-wing mode around the operation region of the operator, the operator can conveniently check and detect the on-load tap changer, the operation efficiency is improved, the tool has the advantages of simple structure, light weight and small size, and orderly and safe and reliable placement of the transformer on-load tap changer is realized. DETAILED DESCRIPTION

[0012] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application. In the drawings: Figure 1 It is a tool three-dimensional structure schematic view of the embodiment of the present application; Figure 2 It is a tool three-dimensional structure schematic view of the embodiment of the present application; Figure 3 It is a front view of the tool of the embodiment of the present application; Figure 4 It is a top view of the tool of the embodiment of the present application; Figure 5 It is a left view of the tool of the embodiment of the present application; Figure 6 It is a three-dimensional structure schematic view of the tool placing the on-load tap changer of the embodiment of the present application; In the figure, 1 is a tool stereoscopic framework, 2 is a U-shaped suspended support steel plate, 3 is a handrail, 4 is a guardrail one, 5 is a ladder one, 6 is a horizontal adjusting foot cup mounting piece, 7 is a stereoscopic framework bottom base, 8 is a load tap changer, 9 is a ring-shaped lifting lug, 10 is a ladder two, 11 is an operation platform one, 12 is an operation platform two, and 13 is a guardrail two. DETAILED DESCRIPTION

[0013] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments.

[0014] As Figures 1-6 shown, the transformer load tap changer placing tool includes a tool stereoscopic framework 1, the tool stereoscopic framework 1 is a whole I-shaped multilayer stereoscopic framework, the tool stereoscopic framework 1 is welded by several steel pipes, the overall design size of the tool stereoscopic framework 1 is 4450mm*2070mm*2500mm, and the overall design weight is 1268kg.

[0015] The left side of the long axis direction of the tool stereoscopic framework 1 is higher than the right side, and the tool stereoscopic framework 1 is provided with different heights in the long axis direction, which can adapt to more different specifications of the on-load tap changer 8. The middle position of the tool stereoscopic framework 1 in the short axis direction is provided with an operation channel, which divides the tool stereoscopic framework 1 in the short axis direction into two symmetrical parts. A ladder one 5 is fixedly arranged in the right operation channel by welding, the left side of the ladder one 5 is higher than the right side, the right side edge of the ladder one 5 is flush with the right side edge of the tool stereoscopic framework 1, a ladder two 10 is fixedly arranged in the left operation channel by welding, the left side of the ladder two 10 is higher than the right side, the left side edge of the ladder two 10 is away from the left side edge of the tool stereoscopic framework 1, an operation platform one 11 is fixedly arranged between the top of the ladder one 5 and the bottom of the ladder two 10 by welding, the operation platform one 11 connects the top of the ladder one 5 and the bottom of the ladder two 10, and the operation platform one 11 is used for detecting the on-load tap changer 8 placed in the lower section. An operation platform two 12 is fixedly arranged between the left side edge of the top of the ladder two 10 and the left side edge of the tool stereoscopic framework 1 by welding, and the operation platform two 12 is used for detecting the on-load tap changer 8 placed in the higher section. The ladder one 5 and the ladder two 10 are composed of a plurality of steps welded on the tool stereoscopic framework 1. The staggered structure design of the ladder one 5 and the ladder two 10 is adapted to the structure characteristics of the tool stereoscopic framework 1 that the top left is higher and the top right is lower. Handrails 3 are symmetrically welded on the tool stereoscopic framework 1 on both sides above the ladder one 5, and kick plates are fixedly arranged symmetrically on both sides of the operation platform one 11 and the operation platform two 12 by welding. Guardrails one 4 are symmetrically welded on the tool stereoscopic framework 1 on both sides above the operation platform one 11, and guardrails two 13 are symmetrically welded on the tool stereoscopic framework 1 on both sides above the operation platform two 12. The arrangement of the handrails 3, the guardrails one 4, the guardrails two 13 and the kick plates improves the safety of the staff when operating at a high position.

[0016] A plurality of steel pipes are welded to form the tool stereoscopic framework 1, which specifically includes vertical support steel pipes, horizontal support steel pipes and inclined reinforcing rib steel pipes, a three-dimensional support structure of horizontal steel pipes, vertical steel pipes and inclined steel pipes, which ensures the stability of the tool stereoscopic framework 1. The bottom of the tool stereoscopic framework 1 extends a certain length from the middle to both sides, and the bottom of the tool stereoscopic framework 1 is symmetrically welded with a three-dimensional framework bottom base 7 of a flat plate structure. The short axis direction of the tool stereoscopic framework 1 is designed as a H-shaped structure with the upper part being narrow and the lower part being wide, and the bottom is additionally provided with the three-dimensional framework bottom base 7, which greatly improves the stability of the tool stereoscopic framework 1 installed on the ground. The bottom of the tool stereoscopic framework 1 adopts a rectangular steel pipe with a specification of 50mm*70mm, which further improves the stability of the tool stereoscopic framework 1 installed on the ground.

[0017] The top of the tool three-dimensional framework 1 on both sides of the operation channel is symmetrically welded with a plurality of U-shaped suspended support steel plates 2, the U-shaped suspended support steel plates 2 are outwardly open, the U-shaped suspended support steel plates 2 preferably adopt steel plates with a specification of 730mm*610mm*20mm, are hollowed out to have semicircular clamping grooves with a diameter of 580mm, the diameter of the semicircular clamping grooves is slightly smaller than the diameter of the flange of the head cover of the on-load tap changer, and a U-shaped insulating wood plate with a matching structure is bonded and mounted on the upper surface of the U-shaped suspended support steel plate 2, and the U-shaped insulating wood plate can prevent the lower surface of the flange of the head cover of the on-load tap changer from being scratched. A plurality of connecting holes are formed in the flange of the head cover of the on-load tap changer, a plurality of internally threaded holes are formed in the U-shaped suspended support steel plate 2 and are matched with the connecting holes of the flange of the head cover of the on-load tap changer, and a plurality of through holes are formed in the U-shaped insulating wood plate and are matched with the internally threaded holes of the U-shaped suspended support steel plate 2, M12 bolts are used to pass through the connecting holes of the flange of the head cover of the on-load tap changer and the through holes in the U-shaped insulating wood plate from top to bottom, and are screwed into the internally threaded holes of the U-shaped suspended support steel plate 2, so that the on-load tap changer 8 is safely and reliably placed on the transformer on-load tap changer placing tool.

[0018] Four annular lifting lugs 9 made of steel are symmetrically fixed and mounted on the top corners of the tool three-dimensional framework 1 by welding, the strength of the annular lifting lugs 2 can meet the requirements that the tool does not deform under double load and does not break under four times load, and the overall placing tool can be moved and production requirements can be met under the requirements of the site environment.

[0019] Four horizontal adjusting foot cup mounting members 6 made of steel are symmetrically fixed and mounted on the bottom long-axis direction outer corners of the tool three-dimensional framework 1 by welding, the horizontal adjusting foot cup mounting member 6 has an L-shaped structure, a horizontal adjusting foot cup is fixed and mounted on the horizontal adjusting foot cup mounting member 6 by bolts, and the placing tool placed on the ground can be kept horizontal by adjusting the horizontal adjusting foot cup.

[0020] Further, a plurality of oil receiving grooves can be further formed on the upper surface of the three-dimensional framework bottom base 7, the oil receiving grooves are located directly below the on-load tap changer 8, and the oil receiving grooves are used to collect lubricating oil residues in the oil chamber (switching switch) of the on-load tap changer 8.

[0021] The use and operation process of the transformer on-load tap changer placing tool in the embodiment of the application is as follows: A hoisting machine is used to hoist and place the transformer on-load tap changer placing tool to a specified position by using the annular lifting lugs 9 on the tool three-dimensional framework 1, and the horizontal adjusting foot cup at the horizontal adjusting foot cup mounting member 6 is adjusted so that the transformer on-load tap changer placing tool is in a horizontal state. The bottom of the transformer on-load tap changer placing tool contacts the ground to play a main supporting role, and the horizontal adjusting foot cup is installed to slightly adjust the levelness of the placing tool and prevent the placing tool from shaking due to the low flatness of the ground.

[0022] The on-load tap changer 8 is hoisted to the U-shaped suspended support steel plate 2, the on-load tap changer head cover flange is closely attached to the U-shaped insulating wood plate on the U-shaped suspended support steel plate 2, and then M12 bolts are screwed into the internal threaded holes on the U-shaped suspended support steel plate 2 for fastening, so as to prevent the on-load tap changer 8 from being displaced or tilted due to environmental factors and human factors. Figure 6 The transformer on-load tap changer placing tool in the application has ten U-shaped suspended support steel plates 2 symmetrically arranged on the top, and can accommodate and place ten on-load tap changers 8.

[0023] The transformer on-load tap changer placing tool provided by the embodiment of the application has a symmetrical layout, the central region in the short axis direction is a core operation space of the staff, is spacious and open, and is convenient for the staff to flexibly adjust the standing position and freely complete information checking, electrical detection and other operations. This design makes the on-load tap changers 8 distributed around the operation region of the staff, which not only ensures smooth operation of the staff and prevents the operation from being blocked, but also realizes that the on-load tap changers 8 are within reach, effectively improves the work efficiency, and achieves an efficient work mode of “the staff in the middle operation and the on-load tap changers 8 suspended on both sides”.

[0024] In the embodiment of the application, the technical features not described in detail are all prior art or conventional technical means, and will not be described here.

[0025] Finally, it should be noted that: the above embodiments are merely specific embodiments of the application, used to illustrate the technical solutions of the application, and not to limit the application. The protection scope of the application is not limited thereto. Those skilled in the art should understand that any skilled person in the art can modify or easily think of changes to the technical solutions recorded in the above embodiments within the technical range disclosed by the application, or make equivalent replacement to some technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application, and all should be covered in the protection scope of the application.

Claims

1. A fixture for placing an on-load tap changer of a transformer, comprising a three-dimensional frame (1), characterized in that, The tooling frame (1) is a multi-layered I-shaped frame that is narrower at the top and wider at the bottom. The height of one side of the tooling frame (1) along its long axis is higher than that of the other side. An operating channel is set in the middle of the tooling frame (1) along its short axis. A ladder one (5) is fixedly installed in the operating channel on the side of the tooling frame (1) with a lower height. A ladder two (10) is fixedly installed in the operating channel on the side of the tooling frame (1) with a higher height. An operating platform one (11) is fixedly installed between the top of ladder one (5) and the bottom of ladder two (10). The outer edge of the top of ladder two (10) is fixedly installed. An operating platform 2 (12) is fixedly installed between the outer edge of the tooling three-dimensional frame (1). The bottom base of the three-dimensional frame (7) is symmetrically fixedly installed on the bottom of the tooling three-dimensional frame (1) on both sides of the operating channel. Several U-shaped suspended support steel plates (2) are symmetrically fixedly installed on the top of the tooling three-dimensional frame (1) on both sides of the operating channel. The U-shaped suspended support steel plates (2) have their openings facing outwards. The opening diameter of the U-shaped suspended support steel plates (2) is smaller than the diameter of the on-load tap changer head cover flange. The U-shaped suspended support steel plates (2) have internal threaded holes that are compatible with the connection holes of the on-load tap changer head cover flange.

2. The fixture for placing an on-load tap changer of a transformer according to claim 1, characterized in that, Handrails (3) are symmetrically fixed on the tooling three-dimensional frame (1) on both sides above the first staircase (5). Guardrails (4) are symmetrically fixed on the tooling three-dimensional frame (1) on both sides above the first operating platform (11). Guardrails (13) are symmetrically fixed on the tooling three-dimensional frame (1) on both sides above the second operating platform (12). Kickboards are symmetrically fixed on both sides of the first operating platform (11) and the second operating platform (12).

3. The fixture for placing an on-load tap changer of a transformer according to claim 1, characterized in that, A U-shaped insulating board matching the installation structure is bonded to the upper surface of the U-shaped suspended support steel plate (2). A through hole is opened on the U-shaped insulating board that is compatible with the internal thread hole of the U-shaped suspended support steel plate (2).

4. The fixture for placing an on-load tap changer of a transformer according to claim 1, characterized in that, Four steel ring-shaped lifting lugs (9) are fixedly installed at the top four corners of the tooling three-dimensional frame (1).

5. The fixture for placing an on-load tap changer of a transformer according to claim 1, characterized in that, Four rigid horizontal adjustment cup mounting parts (6) are fixedly installed at the four corners of the bottom long axis direction of the tooling three-dimensional frame (1). The horizontal adjustment cup mounting parts (6) are L-shaped structures, and the horizontal adjustment cups are fixedly installed on the horizontal adjustment cup mounting parts (6) by bolts.

6. The fixture for placing an on-load tap changer of a transformer according to claim 1, characterized in that, An oil receiving groove is machined on the upper surface of the bottom base (7) of the three-dimensional skeleton, and the oil receiving groove is located directly below the on-load tap changer (8).

7. The fixture for placing an on-load tap changer of a transformer according to claim 1, characterized in that, The bottom of the tooling three-dimensional frame (1) is made of rectangular steel pipe.

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