Manufacturing method of common box type ring network cabinet

Abstract

The invention discloses a manufacturing method of a common tank type ring main unit. The manufacturing method of the common tank type ring main unit comprises the following steps: selecting materials, carrying out profiling, and grinding edges, which require to be welded, of a mounting plate, side plates and a sealing plate; forming an inflating hole, a gas-pressure meter hole and a plurality of binding post holes in the mounting plate; welding threaded posts for mounting a support on the inner side and the outer side of the mounting plate, and welding a threaded seat for fixing pull rods on the inner side of the mounting plate; manufacturing flange strips; connecting the side plates on two sides of the mounting plate; carrying out synchronous welding by laser and electric arc; embedding sealing rings in sealing grooves of the flange strips on the mounting plate and the sealing plate; connecting the pull rods; and sealing the sealing plate. By the manufacturing method of the scheme, the process of secondary welding can be reduced; and moreover, composite welding is adopted, a weld joint cannot crack easily.

Description

technical field [0001] The invention relates to the field of low-voltage power supply and distribution equipment, in particular to a method for manufacturing a common box-type epoxy cabinet. Background technique [0002] With the development of the power industry, China's power distribution system has new requirements for the urban network. Generally, some living quarters, commercial areas, and areas with large power loads are powered by the ring network. The advantage of the ring network power supply is that it can Powered by multiple power sources, when a fault occurs, the power supply can be quickly switched to effectively avoid a long-term power outage; at the same time, it will not affect the power consumption of adjacent areas; and the ring network cabinet used in the ring network power supply It is called a ring network cabinet. Generally, the internal structure design of the ring network cabinet includes electrical components such as vacuum circuit breakers, isolatin...

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Problems solved by technology

[0002] With the development of the power industry, China's power distribution system has new requirements for the urban network. Generally, some living quarters, commercial areas, and areas with large power loads are powered by the ring network. The advantage of the ring network power supply is that it can Powered by multiple power sources, when a fault occurs, the power supply can be quickly switched to effectively avoid a long-term power outage; at the same time, it will not affect the power consumption of adjacent areas; and the ring network cabinet used in the ring network power supply It is called a ring network cabinet. Generally, the internal structure design of the ring network cabinet includes electrical components such as vacuum circuit breakers, isolating switches, current transformers, and voltage transformers. The ring network cabinets that put these electrical components in the same closed box are called common boxes. type ring network cabinet, and now in order to achieve an integrated structure, the common box type ring network cabinet usually welds multiple stainless steel plates to form a sealed box after the stainless steel plate is pressed; It is a non-detachable structure, which will cause damage to the electrical components and can only be repaired by cutting the cabinet body. This not only greatly restricts the application of the common box type ring network cabinet, but also makes a fully sealed ring network cabinet In the process, in order to install the electrical components, it is usually necessary to carry out secondary welding work, and for the second welding, due to the position that has been welded, if it is welded again, it will affect the connection strength of the first welding place, and it is easy to appear Cracks, so there is an urgent need for a manufacturing process that is convenient for manufacturing common box-type ring network cabinets

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