The present invention refers to a modular system applied to transformers, particularly power transformers.
Power transformers are large dimensioned products that, due to their complexity normally present a wide range of accessories and external components, that permit the correct working and control of the system during its lifespan.
The assembly time for all the equipment is a factor to be considered within the total time for project/manufacture/transport and installation of a coupled to the installation tank, or in structural supports fixed in the tank of this transformer. The transformer tank, comprised of panels with welded structural reinforcements is projected in such a manner as to meet the various requirements imposed, namely the requirements of the accessories and external equipment. Additionally, it must resist the different efforts to which the transformer is subject, from the manufacture thereof to the expiry of its lifespan.
The transportation of the transformer from the factory up to its place of destination is also one of the critical aspects during the project, where starting from determined dimensions it is necessary to dismantle the components of the transformer, so that it is possible to carry out the transportation within the possible dimensions and reassemble the referred components at their destination, with consequent expenditure of time and costs.
The above-referred problems may be reduced by means of the modularization and optimization of the installation of the accessories and external equipment.
The present application describes a modular system applied to transformers that comprises a structure of modules of different dimensions, placed in the perimeter of the transformer tank and coupled to this by means of flanged connections, comprised of piping, where the piping of the larger dimensioned modules and those of smaller dimensions are coupled between each other by means of flanged connections, wedge, blind flange and stud mount and the piping of the larger dimensioned modules comprise in their interior outlines and channels and in their exterior rails and the larger dimensioned modules support ventilation and cooling systems in their horizontal piping and the smaller dimensioned modules, that are comprised of vertical piping and upper and lower horizontal piping, support auxiliary circuit boxes, monitoring systems and valve pipelines.
In one embodiment, the piping of the larger dimensioned modules and of the smaller dimensions of the modular system applied to transformers are coupled between each other by a flanged wedge connection by means of a machined blind flange, with a threaded hole and having resource to a washer and screw.
In another embodiment, the piping of the larger dimensioned modules and those with smaller dimensions of the modular system applied to transformers are coupled between each other by means of a connection made through the fitting of a bent plate belonging to one of the piping where two bearings placed respectively in the lower and upper and profile of the piping are used, where the upper bearing is used as a fitting and the lower bearing presents a threaded hole to guarantee the fixation through a screw and washer.
In still another embodiment, the piping of the larger dimensioned modules and of the smaller dimensioned modules of the modular system applied to transformers are coupled between each other through a blind flange with a shape at the extremity so that it fits with the other piping to be connected, through a washer and a screw.
In one embodiment, the piping of the larger dimensioned modules and of the smaller dimensioned modules applied to transformers are coupled between each other through two bearings, that work fitted to a flange with freedom of movements and which is screwed by a screw and washer.
In another embodiment, in the modular system applied to transformers, the refrigeration liquid circulates through the horizontal piping between the transformer tank and the radiators of the cooling system and as the horizontal piping is connected to the transformer tank by means of a flanged connection, with pipe and flange and integration with a valve, the referred flanged connection being guaranteed with the use of screws, nuts and washers.
In still another embodiment, the connection between the horizontal piping and the transformer tank of the modular system applied to transformers is made in each exit/entry of the cooling liquid of the transformer tank.
In one embodiment, the ventilation system of the modular system applied to transformers is surrounded by fairings, which may be individual or whole, covering all the modules or just each one of the modules of the ventilation system and by the modules of the ventilation system being configurable.
In another embodiment, the number of radiators of the cooling system of the modular system applied to transformers is configurable.
In one embodiment, the piping of the larger dimensioned modules and of the smaller dimensioned modules of the modular system applied to transformers are circular, oval, rectangular, or other polygon with variable number of sides.
In one embodiment, the electrification cables of the external components and equipment of the modular system applied to transformers are housed in rails coupled to the piping of each module or in the interior of the piping themselves, adapting their outline for the purpose.
In another embodiment, the electric connections between modules of the modular system applied to transformers are guaranteed by sealed plugs that connect one by one.
In still another embodiment, the monitoring systems of the modular system applied to transformers has remote access modules coupled to it.
The present invention refers to modular system applied to transformers, particularly power transformers, that comprises a structure consisting of modules (1,2,3,4) coupled between each other by fixation means, in such a manner that, the set thus formed, is positioned in the perimeter of the tank (5) of the transformer and to which it is possible to connect several equipment components, so that the referred components and equipment are positioned in the interior of the tank (5) of the transformer, thus permitting the access to the referred components and equipment, when carrying out maintenance, supervision or control work, as well as to permit the optimization in the manufacture thereof, assembly, transport and installation.
Each module (1,2,3,4) is built with resource to piping, which may be of several materials and shapes, where the connection between them is operated in different manners, according to each case. The referred piping, apart from their structural function, have also the function of transporting the cooling liquid between the tank (5) of the transformer and the ventilation system (23) and simultaneously work as support for the passage of electrification cables of the components and external equipment as well as for the electrification and network interconnection of all data acquisition systems and control/monitoring. These electric connections between modules (1,2,3,4) are guaranteed by sealed plugs (46) which have only the possibility of connecting one by one and that permit the interconnection of all the systems in a quicker manner, guaranteeing total reliability without the need of a delayed validation of the electric connections when of the final assembly of the transformer.
In the same manner, the dimensions of the modules (1,2,3,4) may vary between themselves, whereby, however, in their habitual configuration, the structure is comprised of two larger dimensioned modules (1,2) and two other smaller dimensioned modules.
In the usual embodiment of the structure, the connections between the piping and through this way, the connections between the modules (1,2,3,4) that comprise the referred structure are now explained.
As illustrated in
In another embodiment, illustrated in
In
In turn,
In
As previously referred, different components may be connected to the modules (1,2,3,4), which, by this way, are positioned outside of the tank (5) of the transformer permitting its direct access.
Thus, and as illustrated in
It is noted that this connection is made in each exit/entry of cooling liquid in the tank (5) of the transformer, where these connections may be placed in different points, as illustrated in
This form of connection further permits that, during transportation, components such as the cooling (23) and ventilation (22) systems may easily couple through the quick screwed connection (34) so as to facilitate the handling thereof, as is illustrated in
It is further noted the possibility of positioning of fairings (27) surrounding the ventilation system (22), which may be individual or whole, covering all the modules or just each one of the modules of the ventilation system (22), as is illustrated in
It is noted that, together with the remaining modules (3,4), the modules (1,2) guarantee the possibility of supporting the necessary cabling for the working of the transformer. Said cabling is positioned in rails (43) coupled to the piping of each module (1,2,3,4) according to the specifications adopted in each project or in the interior of the piping themselves, adapting their outline (44,45) to this effect.
As previously indicated the cable connection between modules and between the modules and the components or equipment, is guaranteed by sealing plugs (46) that only assemble with the sole male/female guaranteeing speed and reliability to the mounting.
The entire structure is configurable, through the configuration of the modules (1,2,3,4) and respective components, from the shape of the piping (which may be circular, oval, rectangular, or other polygon with variable number of sides) as is illustrated in
In cases where the dimension of the radiators of the cooling system (23) is insufficient to carry out the direct connection between the radiators of the cooling system (23) and the main piping of the modules (1,2,3,4) an intermediary piping (47) is added that will make this connection as illustrated in
In turn, the modules with smaller dimensions (3,4), which are comprised of vertical piping (38,42) and upper horizontal piping (39) and lower horizontal piping (40), will have the function of supporting accessories and exterior equipment, such as auxiliary circuit boxes (35), monitoring systems (36), valve piping (37), for which it is necessary to have a control and facilitated access.
It is noted that the monitoring systems (36) may have remote access modules coupled in a manner that all the several working parameters of the transformer may be monitored remotely through the mobile or fixed devices.
These smaller dimensioned modules (3,4) may or not have the need to support the conserver (41)—coupled in its habitual configuration—through the upper horizontal piping (39) and the vertical piping (38) that offer rigidity to the structure, where the positioning of these components as regards the transformer is dependent on initial conditions of the project, the integration may be variable between the smaller dimensioned modules (3,4).
The configuration of these smaller dimensioned modules (3,4) equally prevents the dismantling of the components for transportation, consequently permitting a quicker final assembly at the client, be it through containers or transportation trucks, as illustrated in
For an easier understanding of the present application the figures are attached which, represent embodiments that, however, do not intend to limit the technology disclosed herein.
The present description is not, naturally, in any way restricted to the embodiments presented in this document and a person with average knowledge of the area may foresee many possibilities of modification of the same without departing from the general idea, such as defined in the claims. The preferred embodiments described above, may obviously be matched between themselves. The following claims additionally define preferred embodiments.
Number | Date | Country | Kind |
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115386 | Mar 2019 | PT | national |
Filing Document | Filing Date | Country | Kind |
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PCT/IB2020/052435 | 3/17/2020 | WO | 00 |