embedded poles,solid embedded poles

The utility model proposes a 12kv embedded poles which can more effectively use the usable space for the heat dissipation element in the solid sealing pole and has no influence on the insulation performance of the entire circuit breaker provided with the solid pillar. The invention comprises the following steps: a embedded poles , which comprises an upper outlet, a vacuum interrupter, a lower outlet, a movable conductive rod, a contact spring, a vacuum interrupter including a static end and a movable end, And the upper end of the vacuum interrupter is connected with the lower outlet and the movable guide rod, the movable conductive rod has an inner surface and an outer surface, and the inner and outer surfaces of the movable conductive rod are tapered And the movable contact rod is arranged between the lower outlet and the vacuum interrupter, and the finger spring is arranged in the lower outlet and surrounds the movable conductive rod, wherein the heat sink is arranged...

Since the 21st century, in the field of medium voltage switch, SF6 arc chamber development is far less than the development of vacuum interrupter. With the continuous development of technology, open vacuum interrupter or insulated tube with an interrupter vacuum circuit breaker has also been gradually replaced by a 24kv embedded poles -type vacuum circuit breaker.    In China, the pressure in the vacuum circuit breakers in 2009 has accounted for 99.39% of medium voltage circuit breakers, as many as 100 manufacturing enterprises [1]. Solid-sealed pole-type vacuum tube circuit breaker with its high reliability, high environmental applicability and maintenance-free advantages such as the rapid occupation of a large number of market share, but also to promote the continuous sealing technology continues to break, the parameters are getting higher and higher, the product line Gradually formed, perfect. Solid sealing pole as the core components of the vacuum circuit breaker, the...

What is a embedded poles ?    The vacuum interrupter and circuit breaker-related conductive parts at the same time embedded in epoxy resin such as easy solidified solid insulation material to form the pole, so that the entire circuit breaker pole into a whole component.    The 12kv embedded poles has the following two advantages:    First, modular design, simple structure, less removable parts, high reliability;    Second, very high insulation rod capacity. It will be insulated into a volume insulation, compared to air insulation, reducing the impact of the environment, greatly improving the dielectric strength.    It can reduce the size of the circuit breaker, is conducive to miniaturization of the switchgear.    Previously, the general vacuum interrupter insulation shell exposed to the air, there is outside the dust, wet pollution problems. To reduce this effect, the vacuum interrupter housing is required to have sufficie...

  1), as compared with conventional high reliability assembled pole, 12kv embedded poles parts, the conductor faying surfaces, are connected with a greatly reduced number of fasteners, thereby simplifying the assembly of the main circuit part, is reduced main circuit resistance, improves the reliability of leading electrical circuit connection; 2), after the stable performance of the vacuum interrupter insulated by solid material embedded in an epoxy resin, the influence of the external environment of the pole vacuum interrupter chamber is minimized , The external sealing capacity of its external insulation can be free from dust, moisture, small animals, condensation and pollution of the impact, fully meet the GB / DL standard requirements of the two dirty areas climbing requirements; 3), the structure can be solid The arc chamber to provide more adequate protection, so that in the assembly or transport process from accidental mechanical collision; 4), miniaturization of epoxy res...

It is of great significance to study the design and optimization of the insulation structure of the solid pillar based on the electrostatic field analysis. In this paper, the electric field distribution of 12kv embedded poles is obtained by electrostatic field analysis, and the electric field distribution of the electric field is extracted, such as grounding shield net and air field near the bolt. The dielectric strength of the insulating medium indicates that the electric field strength in the air field near the bolt exceeds the dielectric strength of the air causing the local discharge to be excessive. Then, based on the theory of electrostatic field combined insulation, a method of reducing the field strength of the air field near the bolt is proposed by adding a flange shield between the fixed hole stud fixing hole and the soft silicone rubber without changing the mold. The maximum field strength of the air region near the bolt is reduced from 5.8 MV / m to 0.32 MV / m by the ele...

First, modular design, simple structure, less removable parts, high reliability; Second, very high insulation rod capacity. It will surface insulation into volume insulation, compared to air insulation, reducing the impact of the environment, greatly improving the dielectric strength. It can make the circuit breaker size, is conducive to miniaturization of the switchgear. Previously, the general vacuum interrupter insulation shell exposed to the air, there is outside the dust, wet pollution problems. To reduce this effect, the vacuum interrupter housing is required to have sufficient length, which not only affects the miniaturization of the vacuum interrupter, but also the performance and reliability of the vacuum interrupter. The solid-sealed pole has the following advantages: Compared with the traditional assembled pole, the number of parts of the embedded poles is reduced greatly, the overlapping surface of the conductor is reduced from 6 groups to 3 groups, and the connection...