Single columns vertical straight-wheel outdoor high voltage AC earthing switch
A high-voltage AC and grounding switch technology, which is applied in the field of power transmission and transformation equipment, can solve problems that affect the safe use of grounding switches, unreasonable structural design, and unreliable opening and closing, and achieve material cost saving, simple and reasonable structure, and closing Smooth and reliable action
Inactive Publication Date: 2012-05-30
山东泰开隔离开关有限公司
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Problems solved by technology
In addition, in order to ensure the safety of maintenance personnel during maintenance, high-voltage electrical equipment such as high-voltage busbars, circuit breakers, transformers, and isolating switches must be reliably grounded. Issues such as reasonableness have become hidden dangers affecting the safe use of grounding switches
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[0019] As shown in the attached figure: a single-column vertical straight swing outdoor high-voltage AC grounding switch, including three single poles forming three phases, each single pole includes post insulator 2, static contact 3, bracket 9, square plate 6. Ground knife rotating shaft 14, transmission connecting rod 10, ground knife tube 1, static contact 3 is set on the base above the post insulator 2, square plate 6 is fixed between the bracket 9 and the post insulator 2, and the ground knife tube 1 passes through The ground knife rotating shaft 14 is fixed on the square plate 6, the middle phase monopole is equipped with an operating mechanism 8, the operating mechanism 8 is connected with the single channel steel 7 through the rotating flange, and the single channel steel 7 is fixedly installed on the square plate 6, the groove The steel has high strength, and saves processing cost and material cost in a large amount, and simplifies the assembly process. The rod 10 is ...
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A straight-wheel outdoor high voltage AC earthing switch with single columns vertical relates to outdoor high voltage electrical apparatuses with three-phase AC of 50Hz and rated voltage of 252kV and below, is used for high voltage electrical apparatus earthing and comprises three single poles; wherein, the single poles are connected by a horizontal transmission rod (4); each single pole comprises a post insulator (2), a static contact (3), a bracket (9), a square board (6), an earthing switchgear rotating shaft (14), a transmission link (10) and an earthing switchgear tube (1); torque generated by an operating mechanism (8) of the mid-phase single pole is transmitted to the earthing switchgear tube (1) for switching closing via the transmission link (10) and the earthing switchgear rotating shaft (14); other two single poles carry out synchronous operation through the horizontal transmission rod (4); a dynamic contact of an earthing switchgear comprises bending boards (15), touch blocks (16) and guard boards (17); the touch blocks (16) are bolted at the inner sides of the bending boards (15); the two bending boards (15) are fixedly connected with the guard boards (17) through fixing bolts; adjustment of the clamping force of the dynamic contact of the earthing switchgear can be realized by adjusting nuts (20) at the outer sides of the bending boards (15). The earthing switch has the characteristics of reasonable structure, reliable and steady switching closing, excellent electrical property, safety, durability and convenient maintenance.
Description
technical field [0001] The invention relates to a power transmission and transformation equipment in a power system, in particular to a switch device for reliable grounding of a three-phase AC 50Hz outdoor high-voltage electrical appliance in a power system with a rated voltage of 252kV and below. Background technique [0002] With the development of domestic power technology and the increase of power grid capacity, in order to reduce the land occupation of transmission corridors, the use of double-circuit transmission lines on the same tower has become the development trend of my country's backbone grid. When the double-circuit transmission line on the same tower is in one round of operation and another round of maintenance, due to the electrostatic coupling and electromagnetic coupling between the two transmission lines, induced voltage and induced current will be generated in the maintenance circuit, which is harmful to the personal safety of the operators who are undergoi...
Claims
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IPC IPC(8): H01H31/28
Inventor 林凡田李渊维
Owner 山东泰开隔离开关有限公司
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