Tank mounting structure for dead tank circuit breaker |
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申请号 | US14264343 | 申请日 | 2014-04-29 | 公开(公告)号 | US09293281B2 | 公开(公告)日 | 2016-03-22 |
申请人 | ABB Technology AG; | 发明人 | Matthew D. Cuppett; Christian Daehler; Elizabeth L. Dahm; | ||||
摘要 | Mounting structure is provided for mounting a tank to support structure. The tank has a flange extending from a body thereof. The mounting structure includes at least a pair of first bores extending into the flange in a first direction. At least a pair of second bores. Each second bore extends into the flange in a direction generally transverse with respect to an associated first bore so that each second bore communicates with the associated first bore. A pin is disposed in each of the second bores. Each pin has a threaded pin bore that aligns axially with the associated first bore. A bolt is disposed through a bolt hole in the support structure, into an associated first bore and in threaded engagement with the threaded pin bore of an associated pin so as to secure the tank to the support structure. | ||||||
权利要求 | What is claimed is: |
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说明书全文 | The invention relates to high voltage dead tank circuit breakers and, more particularly, to improved mounting structure for securing tanks of the circuit breaker to support structure. Dead tank circuit breakers are commonly found in substations and are operable to selectively open and close electrical connections contained within a sealed tank filled with dielectric material for reducing arcing. With reference to The through holes that receive the bolts 30 may have large tolerances with can result in play in the bolt connection. Furthermore, poor bolt connections can occur due to bolting into low strength material of the tank. Thus, there is a need to provide a robust tank mounting structure for mounting tanks to a support structure of a dead tank circuit breaker that allows accurate placement of the tanks regardless of tolerances. An object of the invention is to fulfill the need referred to above. In accordance with the principles of the present invention, this objective is obtained by providing mounting structure for mounting a tank of a dead tank circuit breaker to support structure. The tank has a flange extending from a body thereof. The support structure has bolt holes for receiving bolts. The mounting structure includes at least a pair of first bores extending into the flange in a first direction. At least a pair of second bores is provided with each second bore extends into the flange in a direction generally transverse with respect to an associated first bore so that each second bore communicates with the associated first bore. A pin is disposed in each of the second bores of the pair of second bores. Each pin has a threaded pin bore that aligns axially with the associated first bore. A bolt is disposed through an associated bolt hole of the support structure, in an associated first bore and in threaded engagement with the threaded pin bore of an associated pin so as to secure the tank to the support structure. In accordance with another aspect of an embodiment, a method secures a tank of a dead tank circuit breaker to support structure. The tank has a flange extending from a body thereof. At least a pair of first bores extends into the flange in a first direction. At least a pair of second bores is provided with each second bore extending into the flange in a direction generally transverse with respect to an associated first bore so that each second bore communicates with the associated first bore. The support structure has bolt holes for receiving bolts. The method places the tank on the support structure such that each first bore of the pair of first bores is aligned with an associated bolt hole in the support structure. A pin is placed in each of the second bores of the pair of second bores. Each pin has a threaded pin bore that aligns axially with the associated first bore. A bolt is inserted through each associated bolt hole of the support structure, into an associated first bore and into threaded engagement with the threaded pin bore of an associated pin so as to secure the tank to the support structure. Other objects, features and characteristics of the present invention, as well as the methods of operation and the functions of the related elements of the structure, the combination of parts and economics of manufacture will become more apparent upon consideration of the following detailed description and appended claims with reference to the accompanying drawings, all of which form a part of this specification. The invention will be better understood from the following detailed description of the preferred embodiments thereof, taken in conjunction with the accompanying drawings, wherein like reference numerals refer to like parts, in which: With reference to It is noted that As shown in With reference to As shown in With reference to The high strength pins 52 allow for higher torque than tapping directly into the low strength tanks 24 and thus makes a more reliable connection between the tanks and the support structure 28′. The mounting structure 32 permits accurate placement of the tanks 24 on the support structure 28′ despite large tolerances. The pin location is not sensitive to tolerances. The pins 52 allow for no play (e.g., helps alignment) and the machined surfaces 36, 38, 42, 44 and 46 offset from the pin axis creates a stretch in the bolts 30 which helps ensure the bolts remain tight. The foregoing preferred embodiments have been shown and described for the purposes of illustrating the structural and functional principles of the present invention, as well as illustrating the methods of employing the preferred embodiments and are subject to change without departing from such principles. Therefore, this invention includes all modifications encompassed within the spirit of the following claims. |