Vacuum chamber with a one-piece metallic cover for self-centering
View Patent ↗The disclosure relates to a vacuum chamber including at least one ceramic isolating cylinder with two face ends. At least one of the two face ends of the ceramic isolating cylinder is closed by a metallic cover including an outer and an inner part. A distal end of the outer part of the metallic cover is thinner relative to the remainder of the outer part of the metallic cover and forms a metallic lid. The metallic lid is connected to at least one of the two face ends of the ceramic isolating cylinder in a vacuum tight manner. The metallic cover can be formed in one piece and fits with the inner part of the metallic cover at an inner girthed area of the ceramic isolating cylinder to realize a self-centering of the metallic lid to at least one of the two face ends of the ceramic isolating cylinder.
1. A vacuum chamber comprising:
at least one ceramic isolating cylinder with two face ends; and
a metallic cover configured for closing at least one of the two face ends of the ceramic isolating cylinder, the metallic cover including:
an outer part and an inner part, wherein a distal end of the outer part of the metallic cover is thinner relative to a remainder of the outer part of the metallic cover and forms a metallic lid, wherein the metallic lid is connected to at least one of the two face ends of the ceramic isolating cylinder in a vacuum tight manner,
wherein the metallic cover is formed in one piece and an inner part of the metallic cover fits with an inner girthed area of the ceramic isolating cylinder to realize a self-centering of the metallic lid to at least one of the two face ends of the ceramic isolating cylinder, and
wherein the metallic cover comprises:
four parts, wherein a first part includes the metallic lid and extends axially away from at least one of the two face ends of the ceramic isolating cylinder, a second part extends radially away from the first part towards the interior of the at least one ceramic isolating cylinder, a third part extends basically parallel to the first part axially towards the interior of the at least one ceramic isolating cylinder, and a fourth part extends basically parallel to the second part, axially towards the girthed area of the at least one ceramic isolating cylinder.
2. The vacuum chamber of claim 1 , wherein the metallic cover is made from a stainless steel material.
3. The vacuum chamber of claim 1 , wherein the metallic cover is a deep drawn, rolled, or spun cover.
4. The vacuum chamber of claim 1 , wherein a distal end of the inner part of the metallic cover is of a rounded shape.
5. The vacuum chamber of claim 1 , comprising:
a soldered or brazed connection of the metallic lid to at least one of the two face ends of the ceramic isolating cylinder.
6. The vacuum chamber of claim 1 , wherein the metallic lid has a wall thickness of 0.4 mm or less in the area where it is connected to the at least one of the two face ends of the ceramic isolating cylinder.
7. The vacuum chamber of claim 6 , comprising:
a compensation layer between the metallic lid and at least one of the two face ends.
8. A medium voltage vacuum circuit breaker, comprising:
at least one ceramic isolating cylinder with two face ends;
a metallic cover configured for closing at least one of the two face ends of the ceramic isolating cylinder, the metallic cover including:
an outer part and an inner part, wherein a distal end of the outer part of the metallic cover is thinner relative to a remainder of the outer part of the metallic cover and forms a metallic lid, wherein the metallic lid is connected to at least one of the two face ends of the ceramic isolating cylinder in a vacuum tight manner,
wherein the metallic cover is formed in one piece and an inner part of the metallic cover fits with an inner girthed area of the ceramic isolating cylinder to realize a self-centering of the metallic lid to at least one of the two face ends of the ceramic isolating cylinder and wherein the metallic cover comprises:
four parts, wherein a first part includes the metallic lid and extends axially away from at least one of the two face ends of the ceramic isolating cylinder, a second part extends radially away from the first part towards the interior of the at least one ceramic isolating cylinder, a third part extends basically parallel to the first part axially towards the interior of the at least one ceramic isolating cylinder, and a fourth part extends basically parallel to the second part, axially towards the girthed area of the at least one ceramic isolating cylinder; and
an actuator for generating an operation force for transmission via a jackshaft arrangement to a vacuum interrupter with a vacuum chamber of the vacuum circuit breaker.
9. The medium voltage vacuum circuit breaker of claim 8 , wherein the metallic cover is made from a stainless steel material.
10. The medium voltage vacuum circuit breaker of claim 8 , wherein the metallic cover is a deep drawn, rolled, or spun cover.
11. The medium voltage vacuum circuit breaker of claim 8 , wherein a distal end of the inner part of the metallic cover is of a rounded shape.
12. The medium voltage vacuum circuit breaker of claim 8 , comprising:
a soldered or brazed connection of at least one of the two face ends of the ceramic isolating cylinder.
13. The medium voltage vacuum circuit breaker of claim 8 , wherein the metallic lid has a wall thickness of 0.4 mm or less in the area where it is connected to the at least one of the two face ends of the ceramic isolating cylinder.
14. The medium voltage vacuum circuit breaker of claim 8 , comprising;
a compensation layer between the metallic lid and at least one of the two face ends.