High-reliability high-voltage vacuum circuit breaker
A vacuum circuit breaker, reliability technology, applied in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problems of contact arcing, line connection, etc., and achieve the effect of rapid opening
Active Publication Date: 2020-08-25
GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU +1
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Problems solved by technology
[0004] For this reason, the embodiment of the present invention provides a high-voltage vacuum circuit breaker with high reliability to solve the problem in the prior art that an arc may still be generated between the contacts after the switch is opened, causing the circuit to be connected
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[0031] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] Such as Figure 1 to Figure 5 As shown, the present invention provides a high-reliability high-voltage vacuum circuit breaker, which specifically includes a vacuum circuit breaker housing, and an arc extinguishing chamber 1 in a vacuum state is installed on the vacuum circuit breaker housing, and the upper parts of the arc extinguishing chamber 1 are respectively There is a static contact...
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The embodiment of the invention discloses a high-reliability high-voltage vacuum circuit breaker. The high-reliability high-voltage vacuum circuit breaker comprises a vacuum circuit breaker shell; anarc extinguishing chamber of which the interior is in a vacuum state is arranged on the vacuum circuit breaker shell; a static contact rod and a movable contact rod which are connected with a high-voltage line are arranged on the arc extinguishing chamber; the opposite ends of the static contact rod and the movable contact rod are movably connected in the arc extinguishing chamber; the part, located in the arc extinguishing chamber, of the movable contact rod is sleeved with a stainless steel corrugated pipe used for keeping the internal sealing state of the arc extinguishing chamber; an arc extinguishing mechanism is arranged on the outer side of the movable contact rod in the arc extinguishing chamber; after the moving contact rod is switched off, the arc extinguishing mechanism is located between the static contact rod and the moving contact rod and used for blocking electric arcs; the arc extinguishing mechanism used for blocking the electric arcs is arranged between the contacts;when the moving contact rod is switched off, the arc extinguishing mechanism can block between the two contacts, and the probability of electric arc generation after the contacts are switched off canbe effectively reduced.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of vacuum circuit breakers, in particular to a high-voltage vacuum circuit breaker with high reliability. Background technique [0002] Vacuum circuit breaker is a kind of circuit breaker that is widely used in distribution network. It is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are high vacuum. It has the advantages of frequent operation and arc extinguishing without maintenance. [0003] During the opening and closing process of the contacts of the existing vacuum circuit breaker, the purpose of opening and closing is realized by closing or separating two relative contacts. Short, resulting in a large number of arcs in the process of opening and closing, which will cause the temperature in the vacuum circuit breaker to rise rapidly, which may damage the vacuum circuit breaker, and the distance between the cont...
Claims
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IPC IPC(8): H01H33/664H01H33/666
CPCH01H33/664H01H33/666
Inventor 黎光华林云丹叶伟超黎伟文
Owner GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU