Patent Application
20250201463
The present disclosure is generally related to a device for diverting transformer fluids that leak or overflow from within a pad mounted transformer.
A transformer station comprises a transformer housing in which are disposed a fuse and a cable interface. For example, bayonet-style circuit breakers or fuses (e.g., expulsion fuses) serve to protect the transformer station from overload (or transformer failure) resulting in a short circuit. Bayonet-style fuses are designed to operate under transformer oil (or other type of transformer fluid) and be replaceable after operation. However, when the fuse is removed, the transformer fluid often escapes from the opening of a fuse holder causing possible damage to rubber termination or the cable interface components mounted onto the transformer front plate. Additionally, transformer fluid can leak from the fuse holder opening for other reasons, such as deterioration of the fuse seal (e.g., from aging, premature failure, etc.) or thermal overloading (resulting in increased pressure within the fuse holder), among others, which can all contribute to the development of a transformer leak at the bayonet fuse housing.
Consequently, devices for capturing the transformer fluid that escapes the confines of the transformer tank have been designed and implemented to alleviate the problems resulting from dripping fluid. Such devices usually are mounted to the upper end of the fuse holder just outside the wall of the transformer to prevent dripping of oil or other transformer fluids onto critical power components of the transformer station. However, a problem with the existing fluid-capturing devices is that they eventually fill up and overflow resulting in the transformer fluid dripping onto critical power components, such as bushing and elbow assemblies, which can cause these parts to fail prematurely.
Many aspects of the present disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
In various embodiments, the present disclosure provides a diverter device for transformer fluids and related methods. To aid in preventing leakage and overflows from transformer fuse holders and/or fluid-capturing devices, such as drip trays, embodiments of a diverter device provides a mechanism for directing fluids away from critical power components of a transformer station, such as bushing and elbow assemblies. In accordance with the present disclosure, such a device may be removably attached to an inside tank wall or plate of the transformer station. Accordingly, in various embodiments, the diverter device may be attached using one or more magnetic mount structures or other type of fastening mechanisms, such as an adhesive tape or clamps, among others. Thus, the diverter device allows for easy installation and removal for regular transformer maintenance.
Referring now to
In various embodiments, the bottom-sloped surface 120 is sloped or inclined at an angle relative to the horizontal bottom surface 110, such as but not limited to an angle that is about 150 degrees, angle that is greater than 90 degrees and less than 180 degrees, etc. Accordingly, when the diverter device 100 is positioned over power components of the transformer station, the diverter device 100 can prevent the collected transformer fluid from being deposited onto the power components and can guide/direct the transformer fluids to fall on the ground within an area that is away from the power components. Since the transformer oil used in modern distribution transformers is environmentally friendly and biodegradable, this allows the oil to be diverted away from critical power components and to the ground inside the transformer without causing a hazard to the environment. To aid in guiding in the collected transformer fluid to a desired location, various embodiments of the diverter device 100 also include an angled end surface 125 that is joined to the bottom-sloped surface 120 and has an incline or sloped surface at an angle that is greater than 90 degrees with respect to the bottom-sloped surface 120. Thus, the transformer fluids falling off the end surface 125 will drop in a vertically downward direction resulting in less spillage area on the ground.
As shown in the figures, the diverter device 100 further comprises a back sidewall 130, a first sidewall 140, and a second sidewall 150 that border the horizontal bottom surface 110. In various embodiments, the junction of the sidewalls to the bottom surface can comprise an angle that is or is approximately 90 degrees. Correspondingly, the diverter device 100 further comprises a first sloped-sidewall 160 and a second sloped-sidewall 170 that border opposing sides of the bottom-sloped surface 120. For the perspective view shown in
In various embodiments, the diverter device 100 has one or more magnetic mount structures 180 (e.g., round magnetic discs, rectangular magnetic strips, etc.) that are affixed or embedded in a first/second sidewall 140, 160 of the diverter device and a first/second sloped-sidewall 150, 170, as shown in the figures, so that the diverter device can be 100 attached magnetically to an inside tank wall of the transformer station. In various embodiments, the magnetic holding strength for the mount structures 180 is about 40 pounds, where the diverter device 100 can be positioned over the top of primary elbow assemblies (or other power components) of the transformer station, and below the bayonet fuse holder and/or below a drip tray of the bayonet fuse holder.
As transformers age and are subject to heat and thermal overloading, the tank wall can swell, creating an uneven surface. Thus, in various embodiments, the sidewalls of the diverter device 100 (e.g., first sidewall 140 and first sloped-sidewall 160) that are affixed with the magnetic mount structures 180 is also affixed with a rubber edge strip (not shown) that extends along a top groove 190 of the sidewalls, which can create a seal with the tank wall, once mounted, to divert transformer fluid regardless tk the condition of the tank wall of the transformer station. In various embodiments, the magnetic mount structures 180 and/or the top groove 190 may be located on only one side of the diverter device 100. Alternatively, in various embodiments, the magnetic mount structures 180 and/or the top grove 190 may be located on both sides of the diverter device 100 to provide additional options on how the diverter device can be mounted on the tank wall of the transformer station. In various embodiments, the magnet mount structures 180 are center mounted on the sidewall surfaces of the device so that, in the event that there is an uneven mounting surface, the air gaps covered by the rubber edge strip will be evenly distributed along a length of the diverter device 100.
In various embodiments, dimensions and sizes of the various components of the diverter device 100 can be adapted to fit and accommodate the various types and sizes of transformer stations that are in use. In a non-limiting example,
In various embodiments, the diverter device 100 is formed from plastic molding that is manufactured to prevent breakage considering the strength of the magnets and typical pulling force to remove the device. In these or other embodiments, the diverter device 100 can be made of other types of rigid structures with material composition of steel, aluminum, ceramic, metal alloy or made with materials such as plastic, polyethylene polymer resins, PET-film, polystyrene, polypropylene, etc.
In operation, the diverter device 100 can be mounted to a tank wall 610 of a pad mounted transformer station. Accordingly,
In certain embodiments, the present disclosure provides for methods for implementing a diverter device 100 on a tank wall 610 of a transformer station. Referring now to
It should be appreciated that various sizes, dimensions, contours, rigidity, shapes, flexibility and materials of any of the components or portions of components in the various embodiments discussed throughout may be varied and utilized as desired or required. It should be appreciated that while some parameters or dimensions are provided on the aforementioned figures, the device may constitute various sizes, dimensions, contours, rigidity, shapes, flexibility and materials as it pertains to the components or portions of components of the device, and therefore may be varied and utilized as desired or required. It must also be noted that, as used in the specification and the appended claims, the singular forms “a,” “an” and “the” include plural referents unless the context clearly dictates otherwise. Ranges may be expressed herein as from “about” or “approximately” one particular value and/or to “about” or “approximately” another particular value. In general, the term “about” or “approximately” is used herein to modify a numerical value above and below the stated value by a variance of 10%. In one aspect, the term “about” or “approximately” means plus or minus 10% of the numerical value of the number with which it is being used. Therefore, about 50% means in the range of 45%-55%. Numerical ranges recited herein by endpoints include all numbers and fractions subsumed within that range (e.g. 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.90, 4, 4.24, and 5). Similarly, numerical ranges recited herein by endpoints include subranges subsumed within that range (e.g. 1 to 5 includes 1-1.5, 1.5-2, 2-2.75, 2.75-3, 3-3.90, 3.90-4, 4-4.24, 4.24-5, 2-5, 3-5, 1-4, and 2-4). It is also to be understood that all numbers and fractions thereof are presumed to be modified by the term “about” or “approximately.” When such a range is expressed, other exemplary embodiments include from the one particular value and/or to the other particular value. In describing example embodiments, terminology will be resorted to for the sake of clarity. It is intended that each term contemplates its broadest meaning as understood by those skilled in the art and includes all technical equivalents that operate in a similar manner to accomplish a similar purpose.
It should be emphasized that the above-described embodiments of the present disclosure are merely possible examples of implementations, merely set forth for a clear understanding of the principles of the disclosure. Many variations and modifications may be made to the above-described embodiment(s) without departing substantially from the principles of the present disclosure. All such modifications and variations are intended to be included herein within the scope of this disclosure and protected by the following claims.
