Novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber
A sulfur hexafluoride, single-cylinder technology, used in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve problems such as reducing operating power, and achieve low operating power, easy operation and reasonable structure design. Effect
Active Publication Date: 2013-02-27
西安合容开关有限公司
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Problems solved by technology
Therefore, at the beginning of the 21st century, the developed countries in the world devoted themselves to the study of high-voltage self-energy SF6 circuit breakers that use arc energy to help the arc extinguish when breaking large currents, thereby greatly reducing the operating work.
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[0027] Such as figure 1 , image 3 As shown, the present invention includes a static contact mechanism 1 and a moving contact mechanism 2 used in conjunction with each other, a moving contact seat 3 for installing the moving contact mechanism 2, and an insulation device for driving the moving contact mechanism 2 to perform up and down opening and closing actions. The pull rod 4, the moving contact mechanism 2 is coaxially installed in the cylinder and driven by the cylinder to open and close. The static contact mechanism 1, the moving contact mechanism 2 and the moving contact seat 3 are installed in the arc-extinguishing porcelain sleeve 10 from top to bottom, and the three are coaxially arranged. The inner diameter of the device cylinder is 40% to 50% less and the cylinder is a pressure cylinder with remaining volume in its inside after the movable contact mechanism 2 performs the opening action. The cylinder block of the cylinder is a molded cylinder block made of copper-...
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The invention discloses a novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber, comprising a static contact mechanism and a moving contact mechanism which are used in a matching way, a moving contact seat and an insulating tension pipe driving the moving contact mechanism to carry out on and off operations up and down; wherein the moving contact mechanism is axially arranged in the cylinder and is driven by the cylinder to carry out on and off operations, the static contact mechanism, the moving contact mechanism and the moving contact seat are axially arranged in an arc extinguish ceramic sleeve from up to down, the inner diameter of the cylinder is 40-50% less than that of a compressed air SF6 breaker cylinder, and the cylinder is a pneumatic cylinder with residual capacity in the interior after off operation of the moving contact mechanism. The invention has reasonable structure design, simple use operation and good use effect, and can realize triplex functions of the cylinder being used as a compressed air chamber and a thermal expansion chamber and remaining reasonable residual capacity, so that the self energy sulfur hexafluoride breaker can utilize electric arc energy to help extinguish the electric arc when in heavy cut-off current, thus greatly reducing operation power.
Description
technical field [0001] The invention belongs to the technical field of high-voltage switchgear, and in particular relates to a single-break single-cylinder self-energy high-voltage sulfur hexafluoride circuit breaker arc extinguishing chamber of a 126-252 kV self-energy SF6 circuit breaker capable of breaking 40kA-50kA current. Background technique [0002] At the end of the 20th century, high-voltage SF6 circuit breakers using sulfur hexafluoride (SF6) gas with excellent insulation and arc-extinguishing properties as the medium replaced oil-less circuit breakers and air circuit breakers, and were widely used in power systems. The compressed air SF6 circuit breaker that is used more has the advantages of small size, strong breaking capacity, long electrical life, safety and reliability, etc., but the compressed air SF6 circuit breaker needs a hydraulic or pneumatic operating mechanism with a large operating power. According to the statistics of the power department, mechanic...
Claims
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IPC IPC(8): H01H33/98
Inventor 张裕生武军辉
Owner 西安合容开关有限公司