Disassembling and assembling protection device for on-load tap-changer of magnetic type transformer

Abstract

The utility model provides a dismounting and mounting protection device for an on-load tap-changer of a magnetic type transformer in the field of transformers. Comprising a plate base, a hanger and a handle, the disc seat is provided with a through hole, the disc seat is inserted into a voltage regulating mandrel of the transformer on-load tap-changer through the through hole, the transformer on-load tap-changer is covered, and the threaded connection assembly and foreign matter are prevented from falling into the cylinder body; the hanger array is arranged on the disc seat and is used for orderly placing, constraining and fixing the threaded connection assemblies in the on-load tap-changer dismounting process; and the handles are arranged on the tray seat, so that the device can be conveniently taken out and placed when the device is moved. The disc seat comprises a magnetic sucking disc and a supporting disc; the magnetic suction cup is arranged on the upper portion of the supporting disc, has magnetism and is used for adsorbing threaded connection assemblies and foreign matter which fall off in the on-load tap-changer disassembling and assembling process, and the threaded connection assemblies and the foreign matter are prevented from flying on the surface of the disc base and sliding into the cylinder. The magnetic type transformer on-load tap-changer disassembling and assembling protection device is suitable for being used as a magnetic type transformer on-load tap-changer disassembling and assembling protection device.

Description

Technical Field

[0001] This utility model relates to on-load tap changers in the field of transformers, and in particular to a protective device for disassembling and assembling on-load tap changers of magnetically attracted transformers. Background Technology

[0002] An on-load tap changer is a device that can operate and change the taps of a transformer under energized or loaded conditions, thereby regulating the transformer's output voltage. It achieves the switching between taps in the transformer windings without interrupting the load current, thus changing the number of turns in the windings, i.e., the transformer's voltage ratio, ultimately achieving voltage regulation.

[0003] According to the "Guidelines for Operation and Maintenance of Tap Changers of Power Transformers" (DLT 574-2021) and industry operating experience, the on-load tap changer of embedded transformers should be periodically hoisted out for inspection based on the operating time and number of switching operations.

[0004] If metal shavings, nuts, washers, or other foreign objects fall into the tap changer during disassembly or installation, it may cause damage to the internal insulation of the tap changer, resulting in partial discharge, or even tap changer failure, leading to serious consequences such as short circuit or explosion.

[0005] However, in the process of implementing the inventive technical solution in the embodiments of this application, the inventors of this application discovered that the above-mentioned technology has at least the following technical problems:

[0006] The current construction plan involves cleaning the transformer platform before dismantling, dismantling without gloves, and manually handling the removed nuts and washers. After dismantling, the platform is covered with plastic film and metal caps to prevent foreign objects from falling into the tap changer. This plan has several drawbacks: First, the tap changer is unprotected during dismantling, making it impossible to prevent foreign objects from falling in. Second, it is highly dependent on the workers' skills and experience, resulting in inconsistent effectiveness and poor reliability. Third, it requires additional storage boxes to hold the removed nuts, washers, and other parts, leading to a cluttered work surface.

[0007] This device can prevent dust, sand, and other environmental debris from falling into the tap changer, as well as attract ferromagnetic objects such as metal shavings, screws, and washers generated during disassembly, thus protecting the tap changer. Summary of the Invention

[0008] To address the shortcomings of existing technologies and the problem of threaded connection components and foreign objects falling into the transformer housing during the disassembly and assembly of on-load tap changers, this application provides a magnetically aspirated protective device for the disassembly and assembly of on-load tap changers. This device uses a bracket on the panel base to neatly arrange nuts, washers, and threaded connection components on the bracket. Iron filings, dust, and other foreign objects are attracted to the surface of the panel base, preventing them from falling into the housing and ensuring the safety of the transformer equipment, thus solving the technical problem of disassembly and assembly of on-load tap changers.

[0009] The solution adopted by the embodiments of this application to solve the technical problem is:

[0010] The on-load tap changer disassembly and assembly protection device for magnetically attracted transformers includes a panel base, a bracket, and a handle;

[0011] The panel base has a through hole, through which the panel base is inserted into the voltage regulating spindle of the transformer on-load tap changer, covering the transformer on-load tap changer and preventing threaded connection components and foreign objects from falling into the cylinder.

[0012] The bracket array is located on the panel base and is used to arrange and secure the threaded connection components in an orderly manner during the disassembly and assembly of the on-load tap changer.

[0013] The handles are arranged on the base to facilitate the removal and placement of the device when it is moved.

[0014] In order to further solve the technical problems to be solved by the embodiments of this application, the disk base provided in the embodiments of this application includes a magnetic chuck and a support disk;

[0015] The support plate is located at the bottom of the plate base and is used to support the overall structure of the device;

[0016] The magnetic chuck is located on the upper part of the support plate and is magnetic. It is used to attract threaded connection components and foreign objects that fall during the disassembly and assembly of the on-load tap changer, preventing them from jumping and sliding on the plate surface into the cylinder.

[0017] The support plate and the magnetic chuck have through holes in their centers for inserting the voltage regulating spindle of the on-load tap changer.

[0018] Furthermore, the through hole corresponds to the voltage regulating spindle of the on-load tap changer of the transformer.

[0019] Furthermore, the magnetic chuck has a white film on its upper surface.

[0020] Positive effects:

[0021] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0022] 1. Because the embodiments of this application adopt the technical means of installing through holes on the panel base, the panel base is inserted into the voltage regulating mandrel of the transformer on-load tap changer. The panel base can cover the transformer on-load tap changer, so that the on-load tap changer is in a protected state during disassembly and assembly. This effectively solves the technical problem of disassembly and assembly of transformer on-load tap changers in the prior art, and prevents nuts, washers, threaded connection components, iron filings, dust and foreign objects from falling into the cylinder, thereby achieving the technical effect of protecting the transformer on-load tap changer.

[0023] 2. Since the embodiments of this application adopt the technical means of assembling an array of hangers on the panel base, the nuts and washers threaded connection components can be orderly suspended on the hangers and fixed in place during the disassembly and assembly of the on-load tap changer. This effectively solves the technical problem of disassembly and assembly of transformer on-load tap changers in the prior art, and eliminates the need for a collection box for the nuts and washers threaded connection components, thereby achieving the technical effect of a simple working environment.

[0024] 3. Since the embodiments of this application adopt the technical means of arranging handles on the panel base, the technical problem of disassembling and assembling on-load tap changers of transformers in the prior art is effectively solved, which facilitates the movement of the device and is not affected by the skill level of the construction personnel, thereby achieving the technical effect of improving the reliability of disassembling and assembling on-load tap changers.

[0025] 4. Because the embodiments of this application use a magnetic chuck on the upper part of the panel base, the nuts, washers, threaded connection components, iron filings, dust and foreign objects that fall off during the disassembly and assembly of the on-load tap changer can be attracted to the surface of the magnetic chuck, preventing them from jumping and sliding on the panel base into the cylinder. This effectively solves the technical problems of disassembly and assembly of on-load tap changers in the prior art, further suppresses the falling of nuts, washers, threaded connection components, iron filings, dust and foreign objects, and thus achieves the technical effect of improving the safety and reliability of disassembly and assembly of on-load tap changers.

[0026] It is suitable for use as a protective device for the disassembly and assembly of on-load tap changers of magnetically attracted transformers. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is the southeast isometric view of this embodiment;

[0029] Figure 2 This is the southwest isometric view of this embodiment;

[0030] Figure 3 This is the northwest isometric view of this embodiment;

[0031] Figure 4 This is the front view of this embodiment;

[0032] Figure 5 This is a top view of this embodiment;

[0033] Figure 6 This is a cross-sectional view (AA).

[0034] In the picture:

[0035] 100. Plate base,

[0036] 110. Through hole,

[0037] 120. Magnetic chuck

[0038] 130. Support level;

[0039] 200. Hanging rack,

[0040] 210. Hanging scroll,

[0041] 220. First nut,

[0042] 230. First washer;

[0043] 300. Handle,

[0044] 310. Handle,

[0045] 320. Second nut,

[0046] 330. Second washer. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0048] As shown in the figure, the on-load tap changer disassembly and assembly protection device for magnetically attracted transformers includes a panel base 100, a bracket 200, and a handle 300.

[0049] The panel 100 has a through hole 110 through which the panel 100 is inserted into the voltage regulating spindle of the transformer on-load tap changer, covering the transformer on-load tap changer and preventing nuts, washers, threaded connection components, iron filings, dust and foreign objects from falling into the cylinder.

[0050] The bracket 200 array is on the panel base 100 and is used to arrange and bind the nuts and washers threaded connection components in an orderly manner during the disassembly and assembly of the on-load tap changer. When the device is moved, it plays the role of fixing the nuts and washers threaded connection components.

[0051] The handles 300 are arranged on the base 100 to facilitate the removal and placement of the device when it is moved.

[0052] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages:

[0053] Because the panel 100 has a through hole 110, and the panel 100 is inserted into the voltage regulating spindle of the transformer's on-load tap changer, the panel 100 can cover the transformer's on-load tap changer, keeping the on-load tap changer in a protected state during disassembly and assembly. This prevents nuts, washers, threaded connection components, iron filings, dust, and other foreign objects from falling into the cylinder, thus protecting the transformer's on-load tap changer and preventing damage to the internal insulation, partial discharge, and short circuits.

[0054] Because the array of hangers 200 is installed on the panel base 100, the nuts and washers threaded connection components can be orderly suspended on the hangers 200 and fixed in place during the disassembly and assembly of the on-load tap changer. This serves to fix the nuts and washers threaded connection components when the device is moved. At the same time, there is no need to collect the nuts and washers threaded connection components in a collection box, which avoids clutter at the work site and simplifies the work environment.

[0055] Because handles 300 are arranged on the panel 100, the device is easy to move and is not affected by the skill level of the construction workers, thus improving the reliability of the on-load tap changer assembly and disassembly.

[0056] To ensure the stability of the structure in this embodiment, the disk base 100 is a circular structure, the size of which is matched with the on-load tap changer of the transformer, including a magnetic chuck 120 and a support disk 130.

[0057] The support plate 130 is located at the lower part of the plate base 100 and is used to support the overall structure of the device;

[0058] The magnetic chuck 120 is set on the upper part of the support plate 130 and has magnetism. It is used to attract nuts, washers, threaded connection components, iron filings, dust and foreign objects that fall during the disassembly and assembly of the on-load tap changer, and prevent them from jumping and sliding on the surface of the plate base 100 into the cylinder.

[0059] The support plate 130 and the magnetic chuck 120 are provided with through holes 110 in the center for inserting the voltage regulating spindle of the on-load tap changer.

[0060] As a conventional technical choice, the through hole 110 corresponds to the voltage regulating spindle of the transformer's on-load tap changer, so that the panel 100 can be inserted into the voltage regulating spindle, thereby enabling the panel 100 to cover the transformer's on-load tap changer and prevent the nuts, washers, threaded connection components, iron filings, dust and other foreign objects from falling.

[0061] In this embodiment, the magnetic chuck 120 is made of ferrite or neodymium iron boron permanent magnet material, and the support plate 130 is made of plastic or aluminum plate.

[0062] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages:

[0063] Because the magnetic chuck 120 on the upper part of the panel 100 is magnetic, it can attract nuts, washers, threaded connection components, iron filings, dust and foreign objects that fall off during the disassembly and assembly of the on-load tap changer to the surface of the magnetic chuck 120, preventing them from jumping off the panel 100 and sliding into the cylinder, further suppressing the falling of nuts, washers, threaded connection components, iron filings, dust and foreign objects, and improving the safety and reliability of the disassembly and assembly of the on-load tap changer.

[0064] To further ensure the stability of the structure in this embodiment, a white film is provided on the upper surface of the magnetic chuck 120, which can highlight the nuts, washers, threaded connection components, iron filings, dust and foreign objects on the magnetic chuck 120, making it easier for construction workers to identify them.

[0065] To optimize the structure of this embodiment, the hanger 200 includes a hanging shaft 210, a first nut 220, and a first washer 230;

[0066] The hanging shaft 210 is a threaded shaft. The lower part of the hanging shaft 210 passes through the disc base 100 and is locked and fixed by the first nut 220 and the first washer 230. The hanging shaft 210 is vertically assembled on the disc base 100 to suspend the nut and washer threaded connection assembly and collect the nut and washer threaded connection assembly together, replacing the collection box for collecting the nut and washer threaded connection assembly and simplifying the work site.

[0067] In this embodiment, the hanging shaft 210 corresponds to the nut and washer threaded connection assembly, so that the nut and washer threaded connection assembly is bound and fixed on the hanging shaft 210.

[0068] To further optimize the structure of this embodiment, the handle 300 includes a handle 310, a second nut 320, and a second washer 330;

[0069] The handle 310 is a screw with a ring, which is evenly distributed on the disc base 100. The screw passes through the disc base 100 and is locked and fixed by the second nut 320 and the second washer 330. The ring is used by the construction workers to use their left and right hands to grip and move the device, thereby making the construction workers careful and cautious, and improving the stability of the device when moving, placing and taking it out.

[0070] The handle 300 and the bracket 200 are staggered to maintain the balance and stability of the base 100.

[0071] In this embodiment, the second nut 320 at the outer end of the screw in the handle 300 is a locking nut to prevent the on-load tap changer from loosening and falling into the cylinder during disassembly and assembly.

[0072] It is worth noting that all content not described in detail in the specification belongs to existing technology known to those skilled in the art, and the model parameters of through hole 110 and handle 300 are not specifically limited, and can be determined using conventional equipment. Electrical control components not mentioned in this technical solution are not shown in the figures because they belong to existing technology, and will not be described further here. The description of this utility model is given for illustrative and descriptive purposes only, and is not intended to be exhaustive or to limit the utility model to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

[0073] Finally, it should be noted that:

[0074] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective device for disassembling and assembling the on-load tap changer of a magnetically attracted transformer, characterized in that: include: A plate base (100) has a through hole (110) through which the plate base (100) is inserted into the voltage regulating spindle of the transformer on-load tap changer, covering the transformer on-load tap changer and preventing threaded connection components and foreign objects from falling into the cylinder. Hangers (200), arrayed on the base (100), are used to orderly arrange and secure the threaded connection components during the assembly and disassembly of the on-load tap changer; and A handle (300) is arranged on the base (100) to facilitate the removal and placement of the device when it is moved.

2. The magnetically aspirated transformer on-load tap changer disassembly and assembly protection device according to claim 1, characterized in that: The tray (100) includes: A support plate (130) is disposed at the lower part of the plate base (100) to support the overall structure of the device; and A magnetic chuck (120) is provided on the upper part of the support plate (130) and has magnetism. It is used to attract threaded connection components and foreign objects that fall during the disassembly and assembly of the on-load tap changer, and to prevent them from jumping and sliding onto the surface of the plate seat (100) into the cylinder. The support plate (130) and the magnetic chuck (120) are provided with a through hole (110) at their center for inserting the voltage regulating spindle of the load tap changer.

3. The magnetically aspirated transformer on-load tap changer disassembly and assembly protection device according to claim 2, characterized in that: The through hole (110) corresponds to the voltage regulating spindle of the on-load tap changer of the transformer.

4. The magnetically actuated transformer on-load tap changer disassembly and assembly protection device according to claim 2, characterized in that: The magnetic chuck (120) is made of ferrite or neodymium iron boron permanent magnet material, and the support plate (130) is made of plastic or aluminum plate.

5. The magnetically aspirated transformer on-load tap changer disassembly and assembly protection device according to claim 2, characterized in that: The upper surface of the magnetic chuck (120) is covered with a white film.

6. The magnetically actuated transformer on-load tap changer disassembly and assembly protection device according to claim 1, characterized in that: The bracket (200) includes a hanging shaft (210), a first nut (220), and a first washer (230); The hanging shaft (210) is a threaded shaft. The lower part of the hanging shaft (210) passes through the disc base (100) and is locked and fixed by the first nut (220) and the first washer (230). The hanging shaft (210) is vertically assembled on the disc base (100) for suspending threaded connection components and collecting the threaded connection components together, replacing the collection box for collecting threaded connection components and simplifying the work site.

7. The magnetically actuated transformer on-load tap changer disassembly and assembly protection device according to claim 6, characterized in that: The hanging shaft (210) corresponds to the threaded connection assembly.

8. The magnetically actuated transformer on-load tap changer disassembly and assembly protection device according to claim 1, characterized in that: The handle (300) includes a handle (310), a second nut (320), and a second washer (330); The handle (310) is a screw with a ring, which is evenly distributed on the disc base (100). The screw passes through the disc base (100) and is locked and fixed by the second nut (320) and the second washer (330). The ring is used by the construction workers to grip and move the device with their left and right hands respectively using their thumbs and index fingers, which improves the stability of the device when moving, placing and taking it out. The handle (300) and the bracket (200) are staggered to maintain the balance and stability of the tray (100).

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