Electrical Component
View Patent ↗An electric component, in particular an electric switch placed in a liquid-filled housing of an electrical installation, in particular a transformer, is filled with an insulating and cooling medium. The use of a compensating element, for example in the form of a bellow, makes it possible to transmit volume variations produced in the electric component directly to the surrounding liquid contained in the housing.
1. An electrical component assembly, comprising:
a housing filled with a liquid;
an electrical installation disposed in said housing;
an electrical component disposed in said housing along with said electrical installation and filled with an insulating and cooling medium, said electrical component having a housing wall
tightly sealing said electrical component; and
at least one compensation element disposed in said housing and connected to said electrical component, said compensation element compensating for volume changes in said insulating and cooling medium.
2. The electrical component assembly according to claim 1 :
wherein said housing is a hermetically sealed housing; and
further comprising at least one compensating apparatus connected to said housing for absorbing an excess pressure in said housing.
3. The electrical component assembly according to claim 1 , wherein said compensation element is integrated in said electrical component.
4. The electrical component assembly according to claim 1 , further comprising a conduit connecting said compensation element to said electrical component.
5. The electrical component assembly according to claim 4 , wherein said conduit has an opening formed therein positioned in a lower region of said electrical component to prevent any gases present from entering said conduit.
6. The electrical component assembly according to claim 4 , further comprising at least one valve selected from the group consisting of passage valves, shutoff valves and drain valves, said valve being integrated in said electrical component and opens or closes when set pressures are exceeded or undershot.
7. The electrical component assembly according to claim 1 , wherein said compensation element is formed at least partly from an electrically conductive material and is used as a shield.
8. The electrical component assembly according to claim 1 , wherein said compensation element is an elastic diaphragm.
9. The electrical component assembly according to claim 1 , wherein said compensation element contains at least one of metal compensators and bellows.
10. The electrical component assembly according to claim 1 , wherein said compensation element has a spring element for producing a predetermined pressure difference between said housing and said electrical component.
11. The electrical component assembly according to claim 1 , further comprising at least one pressure wave attenuator for protecting said compensation element from pressure waves.
12. The electrical component assembly according to claim 11 , further comprising a supply line connected to said compensation element, said pressure wave attenuator is disposed in said supply line to the compensation element and reduces a cross section.
13. The electrical component assembly according to claim 1 , wherein said housing wall of said electrical component is used one of partly and completely as said compensation element.
14. The electrical component assembly according to claim 1 , wherein said electrical component is an electrical switch and said electrical installation is a transformer.
15. A configuration, comprising:
a housing filled with a liquid;
an electrical installation disposed in said housing;
an electrical component disposed in said housing and filled with an insulating and cooling medium, said electrical component having a housing wall tightly sealing said electrical component, said electrical component further having at least one apparatus for collecting and draining gases which are produced; and
at least one compensation element disposed in said housing and connected to said electrical component, said compensation element compensating for volume changes in said insulating and cooling medium.
16. The configuration according to claim 15 , wherein said electrical installation is equipped with apparatuses for detecting at least one of a filling level of said liquid, a filling level of said insulating and cooling medium and pressures.
17. The configuration according to claim 15 , wherein said electrical component has a supplementary body for holding a small quantity of an additional insulating and cooling medium to replace losses of the insulating and cooling medium which arises in an event of decomposition as a result of at least one of switching processes and heating of the transition resistors.
18. The configuration according to claim 15 , wherein a deformation caused on said compensation element by a volume alteration is measured and is used for at least one of evaluating and indicating an amount of the insulating and cooling medium present.